CN118500609B - Shock-resistant pressure transmitter - Google Patents
Shock-resistant pressure transmitter Download PDFInfo
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- CN118500609B CN118500609B CN202410907698.9A CN202410907698A CN118500609B CN 118500609 B CN118500609 B CN 118500609B CN 202410907698 A CN202410907698 A CN 202410907698A CN 118500609 B CN118500609 B CN 118500609B
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- liquid
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- 230000035939 shock Effects 0.000 title claims description 10
- 239000007788 liquid Substances 0.000 claims abstract description 234
- 238000007789 sealing Methods 0.000 claims abstract description 22
- 238000001802 infusion Methods 0.000 claims description 20
- 239000010720 hydraulic oil Substances 0.000 claims description 14
- 238000001125 extrusion Methods 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 22
- 230000008569 process Effects 0.000 abstract description 22
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract description 4
- 230000003139 buffering effect Effects 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 17
- 230000009471 action Effects 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000003313 weakening effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
- G01L19/0015—Fluidic connecting means using switching means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0609—Pressure pulsation damping arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0627—Protection against aggressive medium in general
- G01L19/0654—Protection against aggressive medium in general against moisture or humidity
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses an anti-seismic pressure transmitter, and relates to the field of pressure detection. The pressure sensor aims to solve the problem that the pressure sensor in the pressure transmitter is abnormal in measurement due to the fact that the pressure in a pipeline is changed in the working process of the existing pressure transmitter. The pressure measuring device comprises a pressure measuring channel, wherein one side of the pressure measuring channel is communicated with a first liquid guide pipe, the first liquid guide pipe is fixedly connected with a connecting frame, the upper side of the connecting frame is fixedly connected with a connecting ring, the connecting ring is in threaded connection with a second liquid guide pipe, the lower side of the connecting ring is provided with a first sliding ring which is in sealing fit with the inner side of the connecting ring, and the lower side of the first sliding ring is in sealing fit with the upper side of the first liquid guide pipe. According to the pressure sensor, the influence of pressure fluctuation in the pipeline on the pressure measuring element in the pressure transmitter is reduced by buffering the pressure in the pipeline, so that the service life of the pressure measuring element in the pressure transmitter is prolonged, the accuracy of measured data is ensured, and the vibration resistance of the pressure measuring element is realized.
Description
Technical Field
The invention relates to the field of pressure detection, in particular to an anti-seismic pressure transmitter.
Background
The pressure transmitter is a sensor for converting the pressure of liquid, gas or steam into an electrical signal, is widely used in various industrial environments such as petroleum, chemical industry, electric power, water treatment, aerospace, food processing and the like, is used for measuring various parameters such as pressure, liquid level, flow and the like, can adapt to various severe environments such as high temperature, high pressure, corrosive media and the like, and has higher precision and stability.
In the actual use process of the pressure transmitter, when the pressure in the corresponding pipeline or container changes, the measured medium can generate extra impact on the pressure measuring element in the pressure transmitter, so that the measuring precision of the pressure measuring element can be influenced, the service life of the pressure measuring element in the pressure transmitter can be influenced, when the water hammer effect occurs in the process of pipeline transportation of the liquid medium, the pressure in the pipeline can be rapidly changed, pulse type pressure fluctuation can be generated, the pressure fluctuation can generate fluctuation type impact on the pressure measuring element in the pressure transmitter and vibration to the pressure measuring element, the abnormal measuring condition of the pressure measuring element in the pressure transmitter is caused, and the accuracy and the reliability of measured data are influenced.
Disclosure of Invention
The invention provides an anti-seismic pressure transmitter, which aims to solve the problem that the pressure sensor in the pressure transmitter is abnormal in measurement due to the fact that the pressure in a pipeline is changed in the working process of the existing pressure transmitter.
The technical scheme of the invention is as follows: the utility model provides a pressure transmitter of antidetonation type, includes the pressure measurement passageway, one side intercommunication of pressure measurement passageway has first catheter, the downside rigid coupling of first catheter has the link, the upside rigid coupling of link has the link, link threaded connection has the second catheter, the downside of link is provided with rather than inboard sealing fit's first sliding ring, the downside of first sliding ring with sealing fit's upside of first catheter, the upside rigid coupling of second catheter has pressure sensor and treater, pressure sensor is located the downside of treater, the downside rigid coupling in the second catheter has the mounting, mounting sliding connection has first slider, be provided with in the mounting with the extension spring of first slider rigid coupling, the downside of first slider is located in the first catheter, first slider rigid coupling has the round platform shape piece, the round platform shape piece is located in the first catheter, the upside of first catheter is provided with sealing fit's first sliding ring with the second sliding ring.
As a further preferable scheme, a circular truncated cone-shaped groove is arranged in the second sliding ring, and a side bus of the circular truncated cone-shaped block is parallel to an adjacent bus on the circular truncated cone-shaped groove of the second sliding ring and is used for increasing the sealing degree between the second sliding ring and the circular truncated cone-shaped block.
As a further preferable scheme, the part of the first sliding part in the fixing part is not in sealing fit with the first sliding part, and the upper side of the fixing part is fixedly connected with an air duct penetrating through the second liquid guide tube and used for slowing down the upward sliding speed of the first sliding part.
As a further preferable scheme, the second liquid guide pipe is fixedly connected with an elastic drum piece positioned below the pressure sensor, and hydraulic oil is stored between the elastic drum piece and the pressure sensor.
As a further preferable scheme, the infusion device further comprises a ring-shaped array distributed infusion tube, wherein the ring-shaped array distributed infusion tube is fixedly connected to the middle of the connecting ring, the ring-shaped array distributed infusion tube is positioned in the connecting ring, the part of the ring-shaped array distributed infusion tube, which is fixedly connected with the connecting ring, is communicated with a first liquid storage part, the first liquid storage part is internally and slidably connected with a first piston rod, the lower side of the first piston rod is fixedly connected with the upper side of a second sliding ring, the second sliding ring is in sliding fit with the first sliding ring, the first sliding ring is in contact fit with a first catheter, the ring-shaped array distributed infusion tube is positioned at one side, which is fixedly connected with a second liquid storage part, the lower side of the second liquid storage part is provided with an air hole, the second liquid storage part is fixedly connected with a connecting frame, the second liquid storage part is internally and slidably connected with a first piston rod, the second liquid storage part is internally and slidably connected with a second sliding frame, the third sliding frame is connected with a third piston rod, and the third sliding frame is fixedly connected with the third piston rod.
As a further preferable scheme, the third sliding ring is fixedly connected with the first sliding ring, and the first sliding ring is in sliding fit with the connecting ring, the first catheter and the second sliding ring, so that the third sliding ring drives the first sliding ring to slide.
As a further preferable scheme, the device further comprises a gas storage piece, wherein the gas storage piece is fixedly connected to one side of the second liquid guide pipe, which is close to the connecting ring, compressed gas can be stored in the gas storage piece, the gas storage piece is communicated with the second liquid guide pipe, the gas storage piece is positioned above the connecting frame, a second sliding piece is connected in the gas storage piece in a sliding manner, one side of the gas storage piece, which is far away from the second liquid guide pipe, is fixedly connected with an air inlet pipe and a first air outlet pipe, one side of the first air outlet pipe, which is far away from the gas storage piece, penetrates through the second liquid guide pipe and the elastic drum piece, a third sliding piece, which is in sliding connection with the second liquid guide pipe, is fixedly connected with a second air outlet pipe, which penetrates through the elastic drum piece, and a pressure release valve is arranged in the second air outlet pipe.
As a further preferable scheme, one side of the pressure measuring channel, which is far away from the first liquid guide pipe, is fixedly connected with a third liquid guide pipe, a fixed plate in mirror image distribution is fixedly connected in the third liquid guide pipe, the fixed plate in mirror image distribution is connected with a fourth sliding part in a sliding manner, the lower side of the fourth sliding part is provided with a slope in mirror image distribution, the fourth sliding part is fixedly connected with a sliding plate positioned between the fixed plates in mirror image distribution, a spring is arranged between the sliding plate and the upper side adjacent fixed plate, the third liquid guide pipe is fixedly connected with an elastic limiting part in mirror image distribution, the opposite sides of the elastic limiting part are in mirror image distribution and are in extrusion fit with the slope in mirror image distribution of the lower side of the fourth sliding part, the pressure measuring channel is fixedly connected with a third liquid storage part positioned between the first liquid guide pipe and the third liquid guide pipe, the third liquid storage part is in sliding fit with one side of the second liquid storage part, which is far away from the gas storage part, and the third liquid guide pipe is in pressing fit with one side of the third liquid storage part, which is close to the third liquid guide pipe is communicated with one side of the lower connecting pipe.
As a further preferable mode, the fixing plate at the upper side is provided with air holes for keeping the sliding plate stable during sliding.
As a further preferred embodiment, the sum of the supporting forces provided by the mirror-image distribution elastic limiting members to the fourth sliding member is smaller than the supporting forces provided by the adjacent springs of the sliding plate to the fourth sliding member.
Compared with the prior art, the invention has the following advantages: according to the invention, the influence of pressure fluctuation in the pipeline on the pressure measuring element in the pressure transmitter is reduced by buffering the pressure in the pipeline, so that the service life of the pressure measuring element in the pressure transmitter is prolonged, the accuracy of measured data is ensured, the vibration resistance of the pressure measuring element is realized, the surface of the pressure sensor is protected by an indirect detection mode, and the pressure sensor is prevented from being scratched by impurities in liquid when the impurities in the liquid are in contact with the pressure sensor, so that the measuring result of the pressure sensor on the liquid pressure is influenced after the pressure sensor is worn;
When the pressure of the liquid is detected, the pressure in the pipeline is utilized to block the lower side of the pressure measuring element on the pressure transmitter, so that the liquid cannot contact with the pressure measuring element on the pressure transmitter, and the effect of protecting the pressure measuring element on the pressure transmitter is realized;
when the pressure born by the pressure sensor in the pressure measuring channel exceeds the pressure produced by the water hammer effect, the round table-shaped block plugs the second sliding ring, so that liquid does not enter the second liquid guide tube any more or even is not contacted with the pressure sensor any more, thereby realizing the safety protection of the pressure sensor, preventing the pressure sensor from bearing mechanical stress exceeding the normal range and causing permanent deformation or damage of the pressure sensor, and further influencing the long-term measuring accuracy;
And gas is filled between the elastic bulge and the third sliding piece, so that gas partition is created between the elastic bulge and the third sliding piece, and the liquid in the second liquid guide tube is prevented from being influenced by a water hammer effect, so that the liquid in the second liquid guide tube continuously presses the third sliding piece in a vibration state.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of a second catheter part of the present invention;
FIG. 3 is a perspective cross-sectional view of the connector of the present invention;
FIG. 4 is a perspective view of a first catheter of the present invention;
FIG. 5 is a perspective cross-sectional view of a first reservoir of the present invention;
fig. 6 is a perspective view of a third catheter of the present invention.
Reference numerals: 10. the pressure measuring channel, 11, the first liquid guide tube, 12, the connecting frame, 13, the connecting ring, 14, the second liquid guide tube, 15, the first sliding ring, 16, the pressure sensor, 17, the processor, 18, the fixing piece, 181, the first sliding piece, 182, the round table-shaped block, 183, the second sliding ring, 20, the air guide tube, 30, the elastic drum piece, 40, the liquid conveying tube, 41, the first liquid storage piece, 42, the first piston rod, 43, the second liquid storage piece, 44, the second piston rod, 45, the third sliding ring, 50, the air storage piece, 51, the second sliding piece, 52, the air inlet tube, 53, the first air outlet tube, 54, the third sliding piece, 55, the second air outlet tube, 60, the third liquid guide tube, 61, the fixing plate, 62, the fourth sliding piece, 63, the sliding plate, 64, the elastic limiting piece, 65 and the third liquid storage piece.
Detailed Description
Although the invention may be described with respect to a particular application or industry, those skilled in the art will recognize the broader applicability of the invention. Those of ordinary skill in the art will recognize such things as: terms such as up, down, right, and the like are used to describe the drawings and are not meant to limit the scope of the invention as defined by the appended claims. Such as: any numerical designation of the first or second, etc. is merely exemplary and is not intended to limit the scope of the present invention in any way.
In order to solve the problem that the pressure sensor in the pressure transmitter is abnormal in measurement due to the fact that the pressure transmitter is subjected to pressure change in a pipeline in the working process, the pressure sensor reduces the influence of pressure fluctuation in the pipeline on the pressure sensor in the pressure transmitter in a mode of buffering the pressure in the pipeline, and accordingly the service life of the pressure sensor in the pressure transmitter is prolonged.
Example 1: 1-5, including pressure measuring channel 10, the left side of the upper part of pressure measuring channel 10 is fixed and connected with first liquid guiding tube 11, the central axis of pressure measuring channel 10 is vertical to the central axis of first liquid guiding tube 11, the lower side of first liquid guiding tube 11 is fixed with connecting frame 12, the upper side of connecting frame 12 is fixed with connecting ring 13, the upper side of connecting ring 13 is connected with second liquid guiding tube 14 by screw thread (in the invention, only screw thread connection is taken as an example, but not limited to the connection relation between the two, the connection relation between the two can be fixed, welded, quick-dismantling connection, etc.), the lower side of connecting ring 13 is provided with a first sliding ring 15 which is matched with the inner side of the first sliding ring 15 in a sealing way, the lower side of first sliding ring 15 is matched with the upper side of first liquid guiding tube 11 in a sealing way, the upper side of second liquid guiding tube 14 is fixed with pressure sensor 16 and processor 17, the processor 17 is used for processing the pressure value transmitted by the pressure sensor 16 so as to realize the detection of the pressure in the pipeline, the pressure sensor 16 is positioned at the lower side of the processor 17, a fixing piece 18 is fixedly connected at the lower side in the second liquid guide pipe 14, the fixing piece 18 is connected with a first sliding piece 181 in a sliding way, the lower side of the fixing piece 18 is in sealing fit with the first sliding piece 181, the first sliding piece 181 consists of a connecting rod and two circular plates with different diameters, the diameter of the circular plate positioned at the upper side in the first sliding piece 181 is smaller than the diameter in the fixing piece 18, the diameter of the circular plate positioned at the lower side in the first sliding piece 181 is smaller than the diameter in the first liquid guide pipe 11, a tension spring fixedly connected with the first sliding piece 181 is arranged in the fixing piece 18, the tension spring is used for driving the first sliding piece 181 to slide in a resetting way, the lower side of the first sliding piece 181 is positioned in the first liquid guide pipe 11, the first sliding piece 181 is fixedly connected with a circular table-shaped block 182, the round table-shaped block 182 is positioned in the first liquid guide pipe 11, a second sliding ring 183 in sealing fit with the first sliding ring 15 is arranged on the upper side of the first liquid guide pipe 11, the second sliding ring 183 is in limiting fit with the round table-shaped block 182, and the distance between the round table-shaped block 182 and the second sliding ring 183 is shortened, so that the flow quantity of liquid flowing through a round table-shaped groove on the second sliding ring 183 is reduced, the amount of liquid entering the second liquid guide pipe 14 is reduced, the impact of the liquid is buffered, and the impact force generated instantly by the liquid under a high pressure state is buffered.
As shown in fig. 4 and 5, a circular truncated cone-shaped groove is disposed in the second sliding ring 183, and the diameter of the lower side of the circular truncated cone-shaped groove in the second sliding ring 183 is larger than the diameter of the upper side, a side bus of the circular truncated cone-shaped block 182 is parallel to an adjacent bus on the circular truncated cone-shaped groove of the second sliding ring 183, so as to increase the sealing degree between the second sliding ring 183 and the circular truncated cone-shaped block 182, the upper side of the fixing member 18 is fixedly connected with an air duct 20 penetrating through the second liquid guide tube 14, the diameter of a connecting rod in the first sliding member 181 is smaller than the diameter in the air duct 20, so as to slow down the upward sliding speed of the first sliding member 181, when the first sliding member 181 moves upward, the air in the fixing member 18 flows out from the air duct 20, so that the first sliding member 181 slides in a stable state, the liquid entering the first liquid guide tube 11 is prevented from driving the first sliding member 181 to resonate, the liquid in the second liquid guide tube 14 is caused to vibrate in a high frequency, the continuous deformation of the elastic drum 30 is caused, the elastic drum 14 is fixedly connected with the elastic drum 30 located below the pressure sensor 16, the elastic drum 30 is arranged between the elastic drum 16, the elastic drum 16 and the elastic drum 16 is prevented from the liquid 16 from being indirectly contacting the pressure sensor 16, and the pressure sensor 16 is prevented from being indirectly contacting the pressure sensor 16, and the pressure 16 is prevented from being indirectly contacting the pressure sensor 16, and the pressure sensor 16 is caused, and the pressure 16.
In the present invention, the pipe pressure is changed by taking the example of the water hammer effect, which is also called hydraulic shock, which is an instantaneous pressure fluctuation in the pipe due to a sudden change of fluid flow (e.g., rapid valve closing or sudden start/stop of a pump) in the pipe system.
Before the pressure of the liquid 6 in the pipeline is measured by using the pressure measuring device, the pressure measuring channel 10 in the pressure measuring device is arranged between two pipelines, and the pressure measuring channel 10 is fixedly connected with the two pipelines, so that the two pipelines are communicated with the pressure measuring channel 10.
After the fixing of the device is completed, the liquid is guided into the pressure measuring channel 10 by the pipeline (the liquid in the pipeline flows from right to left), and immediately enters the first liquid guiding tube 11 in the process of flowing through the pressure measuring channel 10, when the liquid in the pressure measuring channel 10 enters the first liquid guiding tube 11, the pressure of the liquid is smaller than the supporting force given by the adjacent tension spring of the first sliding piece 181, and at the moment, the first sliding piece 181 cannot drive the round table-shaped block 182 to slide upwards.
The liquid in the first liquid guide tube 11 flows out from the circular truncated cone-shaped groove of the second sliding ring 183 and then enters the first sliding ring 15, then the liquid is transferred into the second liquid guide tube 14 by the first sliding ring 15, the liquid entering the second liquid guide tube 14 extrudes the elastic drum piece 30, the elastic drum piece 30 deforms and extrudes hydraulic oil between the elastic drum piece 30 and the pressure sensor 16, the pressure sensor 16 indirectly detects the pressure of the liquid by transmitting the extrusion force of the liquid to the elastic drum piece 30 through the hydraulic oil, the processor 17 analyzes and displays the pressure of the liquid after transmitting an electric signal to the processor 17, and when impurities in the liquid are contacted with the pressure sensor 16, the pressure sensor 16 is scratched by the impurities in the liquid, so that the measuring result of the liquid pressure sensor 16 is influenced after abrasion occurs.
When the water hammer effect occurs in the pressure measuring channel 10 and the pressure is within the bearing capacity of the pressure sensor 16, the liquid flowing through the pressure measuring channel 10 enters the first liquid guide tube 11, the pressure of the liquid entering the first liquid guide tube 11 exceeds the pressure of the liquid normally conveyed by the pressure measuring channel 10, under the action that the liquid pressure is higher than the pressure of the liquid normally conveyed by the pressure measuring channel 10, the liquid entering the first liquid guide tube 11 presses the first sliding piece 181 upwards (the supporting force provided by the adjacent tension spring of the first sliding piece 181 is smaller than the pressure of the liquid in the first liquid guide tube 11 at the moment), the first sliding piece 181 drives the round table-shaped block 182 to move upwards (the adjacent tension spring is stretched in the process of upward movement of the first sliding piece 181), the circular truncated cone-shaped block 182 is close to the circular truncated cone-shaped groove on the second sliding ring 183 (the circular truncated cone-shaped block 182 is close to the second sliding ring 183 but does not shade the circular truncated cone-shaped groove on the second sliding ring 183), so that the flow rate of liquid flowing through the circular truncated cone-shaped groove on the second sliding ring 183 is reduced, the amount of liquid entering the second liquid guide tube 14 is further reduced, the impact of the liquid is buffered, the impact force generated instantaneously by the liquid in a high-pressure state is buffered, the liquid in the high-pressure state instantaneously impacts the elastic drum 30 after the water hammer effect occurs, and the elastic drum 30 is worn after the impact of the liquid.
When the water hammer effect occurs in the pressure measuring channel 10, the liquid entering the first liquid guiding tube 11 extrudes the first sliding member 181 upwards, and the gas in the fixing member 18 is extruded by the first sliding member 181 in the process of moving upwards, so that the gas in the fixing member 18 flows out of the gas guiding tube 20, the first sliding member 181 slides in a stable state, the liquid entering the fluctuation state in the first liquid guiding tube 11 is prevented from driving the first sliding member 181 to resonate, the liquid in the second liquid guiding tube 14 is caused to vibrate at a high frequency, and the elastic drum sheet 30 is deformed continuously, so that the real-time detection of the liquid in the pressure measuring channel 10 under the overpressure state is influenced by the pressure sensor 16.
When the water hammer effect in the pressure measuring channel 10 disappears, the first sliding member 181 resets and slides under the action of the adjacent spring, and the external air reenters the fixing member 18 through the air duct 20.
In embodiment 1, the first sliding ring 15 is fixedly connected with both the connection ring 13 and the first catheter 11, and the second sliding ring 183 is fixedly connected with the first sliding ring 15, but in embodiment 2, the first sliding ring 15 is in sliding fit with the connection ring 13, the first catheter 11 and the second sliding ring 183, and the second sliding ring 183 is in sealing sliding fit with the first sliding ring 15.
In order to solve the problem that when the pressure in a pipeline exceeds the bearing capacity of a load cell on a pressure transmitter, the load cell on the pressure transmitter is damaged in the prior art, the pressure in the pipeline is utilized to seal the lower side of the load cell on the pressure transmitter, so that liquid cannot contact the load cell on the pressure transmitter, and the effect of protecting the load cell on the pressure transmitter is realized.
Example 2: on the basis of the embodiment 1, as shown in fig. 2-5, the infusion tube device further comprises infusion tubes 40 distributed in an annular array, wherein the infusion tubes 40 distributed in the annular array are in an inverted U shape, the infusion tubes 40 distributed in the annular array are fixedly connected to the middle part of the connecting ring 13, the opposite sides of the infusion tubes 40 distributed in the annular array are fixedly connected and communicated with first liquid storage pieces 41, the first liquid storage pieces 41 distributed in the annular array are positioned in the connecting ring 13, first piston rods 42 are connected in the first liquid storage pieces 41 in a sealing sliding manner, the upper sides of the second sliding rings 183 are fixedly connected with all the first piston rods 42, the second sliding rings 183 are in sealing sliding fit with the first sliding rings 15, the first sliding rings 15 are in contact fit with the first liquid guide tubes 11, the back sides of the infusion tubes 40 distributed in the annular array are fixedly connected with second liquid storage pieces 43 fixedly connected with the connecting frame 12, the lower parts of the back sides of the second liquid storage pieces 43 distributed in the annular array are provided with air holes, the hydraulic oil is stored in the infusion tube 40, the second liquid storage part 43 and the first liquid storage part 41, the second liquid storage part 43 is internally and hermetically connected with a second piston rod 44, the connecting frame 12 is in limit sliding connection with a third sliding ring 45 fixedly connected with the first sliding ring 15, the lower sides of the annular arrays of the second piston rods 44 are fixedly connected with the third sliding ring 45, springs are arranged between the third sliding ring 45 and the connecting frame 12, the first sliding ring 15 is in sliding fit with the connecting ring 13, the first liquid guide tube 11 and the second sliding ring 183, the third sliding ring 45 drives the first sliding ring 15 to slide, and the sliding of the second sliding ring 183, the circular table-shaped block 182 and the first sliding part 181 is buffered by the contraction of adjacent springs of the third sliding ring 45, so that the effect of weakening the liquid pressure is realized.
When the water hammer effect occurs in the pressure measuring channel 10 and the pressure exceeds the bearing capacity of the pressure sensor 16, the pressure of the liquid entering the first liquid guide tube 11 is larger than the pressure mentioned in the embodiment 1, at this time, the liquid in the first liquid guide tube 11 drives the first sliding member 181 to move upwards, so that the round table-shaped block 182 on the first sliding member 181 is attached to the round table-shaped groove in the second sliding ring 183, and the liquid is not circulated upwards by the round table-shaped groove in the second sliding ring 183 any more, so as to realize the protection of the elastic drum 30 and the pressure sensor 16, and the liquid entering the first liquid guide tube 11 extrudes the first sliding member 181, the round table-shaped block 182 and the second sliding ring 183 upwards together, and the second sliding ring 183 drives the first piston rods 42 distributed in the annular array to slide upwards.
Taking the sliding process of one of the first piston rods 42 as an example, the first piston rods 42 slide upwards to squeeze the hydraulic oil in the adjacent first liquid storage parts 41 into the adjacent second liquid storage parts 43 through the adjacent infusion tube 40, so that the second piston rods 44 in the second liquid storage parts 43 drive the third sliding rings 45 to slide downwards, adjacent springs are squeezed in the process of sliding the third sliding rings 45 downwards, and the sliding of the second sliding rings 183, the round table-shaped blocks 182 and the first sliding parts 181 is buffered by the contraction of the adjacent springs of the third sliding rings 45, so that the effect of weakening the liquid pressure is realized.
The third sliding ring 45 drives the first sliding ring 15 to slide along the lower side of the connecting ring 13 and the lower side of the first catheter 11 during the process of sliding downwards, so that the pressure in the first sliding ring 15 is kept stable, which is explained as follows: after the second sliding ring 183 slides upwards, the second sliding ring 183 presses the liquid entering between the first sliding ring 15 and the second catheter 14, so that the pressure of the liquid in the first sliding ring 15 and the second catheter 14 is increased, and the space occupied by the first sliding ring 15 in the connecting ring 13 is reduced when the first sliding ring 15 slides downwards, so that the pressure in the first sliding ring 15 and the second catheter 14 is kept stable.
When the water hammer effect in the pressure measuring channel 10 disappears, the third sliding ring 45 drives all the second piston rods 44 to reset upwards and slide under the action of the adjacent springs, the second piston rods 44 squeeze the hydraulic oil in the adjacent second liquid storage parts 43 into the adjacent first liquid storage parts 41 through the adjacent infusion tubes 40, the adjacent first piston rods 42 in the first liquid storage parts 41 push the second sliding ring 183 downwards, so that the second sliding ring 183 is restored to the state in fig. 4, and the first sliding parts 181 and the round table-shaped blocks 182 reset and slide to the state in fig. 4 under the action of the adjacent springs.
Example 3: on the basis of embodiment 2, as shown in fig. 1,2, 4 and 6, the device further comprises a gas storage piece 50 fixedly connected to the lower side of the second liquid guiding tube 14, compressed gas is stored in the gas storage piece 50, the gas storage piece 50 is communicated with the second liquid guiding tube 14, the gas storage piece 50 is positioned above the connecting frame 12, a second sliding piece 51 is connected in a sealing sliding manner in the gas storage piece 50, the second sliding piece 51 consists of a connecting rod and two circular plates with different diameters, the diameter of the circular plate positioned on the left side in the second sliding piece 51 is consistent with the diameter in the gas storage piece 50, the right side surface of the gas storage piece 50 is fixedly connected and communicated with an air inlet pipe 52, a one-way valve is arranged in the air inlet pipe 52, when the second sliding piece 51 moves rightward, the one-way valve in the air inlet pipe 52 is in a closed state, when the second sliding piece 51 moves leftward, the one-way valve in the air inlet pipe 52 is in an open state, the right part of the upper side of the air storage piece 50 is fixedly connected and communicated with a first air outlet pipe 53, the elastic drum piece 30 is connected with a third sliding piece 54 which is connected with the second liquid guide pipe 14 in a sliding way, the third sliding piece 54 is made of elastic materials, the lower side surface of the elastic drum piece 30 is contacted and matched with the upper side surface of the third sliding piece 54, the upper side of the first air outlet pipe 53 penetrates through the second liquid guide pipe 14 and the elastic drum piece 30, a one-way valve is arranged in the first air outlet pipe 53, when the second sliding piece 51 moves rightwards, the one-way valve in the first air outlet pipe 53 is in an open state, at the moment, gas in the air storage piece 50 enters between the elastic drum piece 30 and the third sliding piece 54 through the first air outlet pipe 53, when the second sliding piece 51 moves leftwards, the one-way valve in the first air outlet pipe 53 is in a closed state, and gas isolation is created between the elastic drum piece 30 and the third sliding piece 54 through gas between the elastic drum piece 30 and the third sliding piece 54, the liquid in the second liquid guiding tube 14 is prevented from being influenced by the water hammer effect, so that the liquid in the second liquid guiding tube 14 continuously extrudes the third sliding part 54 in a vibration state, the second liquid guiding tube 14 is fixedly connected with the second air outlet pipe 55 penetrating through the elastic drum piece 30, a pressure release valve is arranged in the second air outlet pipe 55, when the pressure of air between the elastic drum piece 30 and the third sliding part 54 exceeds the threshold value of the pressure release valve in the second air outlet pipe 55, the pressure release valve in the second air outlet pipe 55 is opened, and after the pressure release valve is smaller than the threshold value of the pressure release valve in the second air outlet pipe 55, the pressure release valve in the second air outlet pipe 55 is automatically closed.
As shown in fig. 1, 2, 4 and 6, the right part of the upper side of the pressure measuring channel 10 is fixedly connected and communicated with a third liquid guide tube 60, the direction of liquid circulation in the pressure measuring channel 10 is from the right side to the left side of the pressure measuring channel 10, a mirror-distributed fixing plate 61 is fixedly connected in the third liquid guide tube 60, the upper fixing plate 61 is provided with air holes for keeping the sliding process of the sliding plate 63 stable, the upper and lower mirror-distributed fixing plates 61 are jointly connected with a fourth sliding piece 62 in a sliding manner, the lower side of the fourth sliding piece 62 is provided with an inclined plane which is distributed in an upper and lower mirror manner, the fourth sliding piece 62 is fixedly connected with a sliding plate 63 which is positioned between the mirror-distributed fixing plates 61, the sliding plate 63 extrudes gas between the sliding plate 63 and the upper fixing plate 61 in the upward sliding process, the gas is sprayed out of the air holes of the upper fixing plate 61, and the sliding process of the sliding plate 63 is kept stable, a spring is arranged between the sliding plate 63 and the fixed plate 61 adjacent to the upper side, the spring is used for driving the sliding plate 63 to reset and slide, the middle part of the third liquid guiding pipe 60 is fixedly connected with an elastic limiting piece 64 which is distributed in a left-right mirror image mode, opposite sides of the elastic limiting piece 64 which is distributed in a left-right mirror image mode are respectively matched with inclined surfaces which are distributed in a mirror image mode on the lower side of the fourth sliding piece 62 in an extrusion mode, the sum of supporting forces provided by the elastic limiting piece 64 which is distributed in the mirror image mode on the fourth sliding piece 62 is smaller than the supporting force provided by the adjacent spring of the sliding plate 63 on the fourth sliding piece 62, the pressure measuring channel 10 is fixedly connected with a third liquid storing piece 65 which is positioned between the first liquid guiding pipe 11 and the third liquid guiding pipe 60, hydraulic oil is stored in the third liquid storing piece 65 is matched with the right side of the second sliding piece 51 in a sealing and sliding mode, the diameter of a circular plate positioned on the right side of the second sliding piece 51 is consistent with the diameter in the third liquid storing piece 65, the adjacent sides of the third liquid storage member 65 and the third liquid guide tube 60 are communicated by a connection tube, the right side of which is located between the slide plate 63 and the lower side fixing plate 61.
When the water hammer effect occurs in the pressure measuring channel 10 and the pressure exceeds the bearing capacity of the pressure sensor 16, the truncated cone-shaped block 182 is already attached to the second sliding ring 183, so that liquid cannot enter the first sliding ring 15 and the connecting ring 13.
When the liquid in the pressure measuring channel 10 enters the third liquid guide tube 60, the extrusion force applied by the liquid to the fourth sliding piece 62 is larger than the sum of extrusion forces applied by adjacent springs of the sliding plate 63 and all elastic limiting pieces 64, the liquid entering the third liquid guide tube 60 drives the fourth sliding piece 62 to slide upwards, and in the process that the fourth sliding piece 62 drives the sliding plate 63 to slide upwards, the inclined surface of the lower part of the fourth sliding piece 62 positioned at the upper side extrudes the telescopic parts of all elastic limiting pieces 64, so that the telescopic parts of all elastic limiting pieces 64 shrink inwards.
The fourth sliding member 62 drives the sliding plate 63 to slide along the lower fixing plate 61, and the hydraulic oil in the third liquid storage member 65 is extracted through the connecting pipe (the air between the sliding plate 63 and the upper fixing plate 61 is extruded in the process of sliding the sliding plate 63 upwards, so that the air is sprayed out from the air holes of the upper fixing plate 61, the sliding process of the sliding plate 63 is kept stable), and the hydraulic oil in the third liquid storage member 65 enters between the sliding plate 63 and the lower fixing plate 61 through the adjacent connecting pipe.
After the hydraulic oil in the third liquid storage member 65 flows out, the second sliding member 51 slides rightward (the liquid in the second liquid guide tube 14 is introduced into the gas storage member 50 during the rightward sliding of the second sliding member 51, so as to lower the liquid level of the liquid in the second liquid guide tube 14), the gas in the gas storage member 50 is conveyed between the elastic drum 30 and the third sliding member 54 through the first air outlet pipe 53 during the rightward sliding of the second sliding member 51 (the one-way valve in the first air outlet pipe 53 is opened, the one-way valve in the air inlet pipe 52 is closed), the third sliding member 54 slides downward, and the lower side of the third sliding member 54 contacts with the liquid level of the liquid in the second liquid guide tube 14, the liquid level of the liquid in the second liquid guiding tube 14 is reduced, the third sliding part 54 slides downwards under the action of the gas transmitted by the first air outlet tube 53 and contacts with the liquid level of the liquid in the second liquid guiding tube 14, a gas environment is created between the elastic bulge 30 and the third sliding part 54 (the pressure of the gas between the elastic bulge 30 and the third sliding part does not exceed the threshold value of the pressure release valve in the second air outlet tube 55), the liquid in the second liquid guiding tube 14 is prevented from being influenced by the water hammer effect, the liquid in the second liquid guiding tube 14 is caused to continuously press the third sliding part 54 in a vibration state (when the water hammer effect does not occur, the extrusion force is applied to the elastic bulge 30 in the extrusion process of the third sliding part 54, so that the extrusion force can be transmitted to the pressure sensor 16 through the adjacent hydraulic oil by the elastic bulge 30.
When the water hammer effect in the pressure measuring channel 10 disappears, the sliding plate 63 and the fourth sliding piece 62 return to slide under the action of the adjacent springs, the supporting force provided by the adjacent springs of the sliding plate 63 to the fourth sliding piece 62 is larger than the sum of the supporting forces provided by all the elastic limiting pieces 64 to the fourth sliding piece 62, and the inclined surfaces at the lower side of the fourth sliding piece 62 press the end parts of all the elastic limiting pieces 64, so that the fourth sliding piece 62 returns to slide, the end parts of all the elastic limiting pieces 64 are not pressed any more and slide in opposite directions, and at the moment, the inclined surfaces at the upper side of the lower part of the fourth sliding piece 62 are in contact with the end parts of all the elastic limiting pieces 64.
The hydraulic oil between the sliding plate 63 and the adjacent fixed plate 61 is pushed into the third liquid storage member 65 through the adjacent connecting pipe in the process of moving downwards, and the hydraulic oil entering the third liquid storage member 65 presses the second sliding member 51 to the state shown in fig. 4, and then the basic position of the parts is obtained.
The check valve in the air inlet pipe 52 is opened in the process of resetting the second sliding part 51, so that the external air enters the air storage part 50 from the air inlet pipe 52 to realize air supplementing of the air storage part 50, and the check valve in the first air outlet pipe 53 is in a closed state in the process.
After the water hammer effect in the pressure measuring channel 10 disappears, after the first sliding piece 181, the round table-shaped block 182 and related parts thereof are reset to the state in fig. 4, liquid flows into the second liquid guiding tube 14 through the first liquid guiding tube 11, the first sliding ring 15 and the connecting ring 13, the liquid entering the second liquid guiding tube 14 presses the third sliding piece 54 upwards, gas between the third sliding piece 54 and the elastic drum piece 30 is pressed in the process of upwards moving the third sliding piece 54, and after the gas is compressed to exceed the threshold value of the second air outlet tube 55, the gas is discharged through the second air outlet tube 55, so that the transfer of the gas is realized.
It should be understood that the above-described embodiments are merely illustrative of the present invention and are not intended to limit the scope of the present invention.
Claims (8)
1. An anti-seismic pressure transmitter, characterized by: the pressure measuring device comprises a pressure measuring channel (10), a first liquid guide pipe (11) is communicated with one side of the pressure measuring channel (10), a connecting frame (12) is fixedly connected to the lower side of the first liquid guide pipe (11), a connecting ring (13) is fixedly connected to the upper side of the connecting frame (12), a second liquid guide pipe (14) is connected to the connecting ring (13) in a threaded mode, a first sliding ring (15) in sealing fit with the inner side of the connecting ring (13) is arranged on the lower side of the connecting ring (13), the lower side of the first sliding ring (15) is in sealing fit with the upper side of the first liquid guide pipe (11), a pressure sensor (16) and a processor (17) are fixedly connected to the upper side of the second liquid guide pipe (14), a fixing piece (18) is fixedly connected to the lower side of the second liquid guide pipe (14), a tension spring (181) is arranged in the fixing piece (18), a first sliding piece (181) is fixedly connected to the first liquid guide pipe (181) in a circular table (11), a tension spring (181) is fixedly connected to the lower side of the first liquid guide pipe (181), a second sliding ring (183) in sealing fit with the first sliding ring (15) is arranged on the upper side of the first liquid guide tube (11), and the second sliding ring (183) is in limit fit with the round table-shaped block (182);
The infusion device also comprises infusion tubes (40) distributed in a ring-shaped array, wherein the infusion tubes (40) distributed in the ring-shaped array are fixedly connected to the middle part of the connecting ring (13), the infusion tubes (40) distributed in the ring-shaped array are fixedly connected to and communicated with first liquid storage parts (41), the first liquid storage parts (41) distributed in the ring-shaped array are fixedly connected with first piston rods (42) in a sliding manner, the lower sides of the first piston rods (42) are fixedly connected with the upper sides of second sliding rings (183), the second sliding rings (183) are in sliding fit with the first sliding rings (15), the first sliding rings (15) are in contact fit with the first liquid guide tubes (11), the infusion tubes (40) are fixedly connected to and communicated with second liquid storage parts (43) on one side outside the connecting ring (13), air holes are formed in the lower sides of the second liquid storage parts (43), the second liquid storage parts (43) are distributed in the ring-shaped array, the second liquid storage parts (43) are fixedly connected with the connecting frame (12), the second sliding parts (43) are fixedly connected with the second sliding parts (45), the second sliding parts (43) are fixedly connected with the second sliding parts (43), the lower sides of the second piston rods (44) distributed in the annular array are fixedly connected with the third sliding ring (45), and springs are arranged between the third sliding ring (45) and the connecting frame (12);
The third sliding ring (45) is fixedly connected with the first sliding ring (15), and the first sliding ring (15) is in sliding fit with the connecting ring (13), the first liquid guide tube (11) and the second sliding ring (183) and is used for enabling the third sliding ring (45) to drive the first sliding ring (15) to slide.
2. The shock resistant pressure transmitter of claim 1 wherein: the second sliding ring (183) is internally provided with a circular truncated cone-shaped groove, and a bus on the side surface of the circular truncated cone-shaped block (182) is parallel to an adjacent bus on the circular truncated cone-shaped groove of the second sliding ring (183) and is used for increasing the sealing degree between the second sliding ring (183) and the circular truncated cone-shaped block (182).
3. The shock resistant pressure transmitter of claim 1 wherein: the first sliding part (181) is positioned in the fixing part (18) and is not in sealing fit with the fixing part, and an air duct (20) penetrating through the second liquid guide tube (14) is fixedly connected to the upper side of the fixing part (18) and is communicated with the fixing part, so that the upward sliding speed of the first sliding part (181) is slowed down.
4. A shock resistant pressure transmitter as recited in claim 3, wherein: the second liquid guide tube (14) is fixedly connected with an elastic drum sheet (30) positioned below the pressure sensor (16), and hydraulic oil is stored between the elastic drum sheet (30) and the pressure sensor (16).
5. The shock resistant pressure transmitter of claim 4, wherein: the air storage device is characterized by further comprising an air storage piece (50), wherein the air storage piece (50) is fixedly connected to one side of the second liquid guide pipe (14) close to the connecting ring (13), compressed air can be stored in the air storage piece (50), the air storage piece (50) is communicated with the second liquid guide pipe (14), the air storage piece (50) is located above the connecting frame (12), a second sliding piece (51) is connected in the air storage piece (50) in a sliding manner, the air storage piece (50) is far away from one side of the second liquid guide pipe (14) and is fixedly connected with an air inlet pipe (52) and a first air outlet pipe (53), one side of the first air outlet pipe (53) away from the air storage piece (50) is penetrated by the second liquid guide pipe (14) and the elastic drum piece (30), a third sliding piece (54) is connected with the second liquid guide pipe (14) in a sliding manner, the second air outlet pipe (52) is fixedly connected with the second air outlet pipe (55), and the second air outlet pipe (55) is penetrated by the elastic drum piece (30).
6. The shock resistant pressure transmitter of claim 5, wherein: a third liquid guide tube (60) is fixedly connected and communicated with one side, far away from the first liquid guide tube (11), of the pressure measuring channel (10), a mirror-distributed fixing plate (61) is fixedly connected in the third liquid guide tube (60), the mirror-distributed fixing plate (61) is jointly and slidably connected with a fourth sliding piece (62), the lower side of the fourth sliding piece (62) is provided with a mirror-distributed inclined surface, the fourth sliding piece (62) is fixedly connected with a sliding plate (63) positioned between the mirror-distributed fixing plate (61), a spring is arranged between the sliding plate (63) and the fixing plate (61) adjacent to the upper side, an elastic limiting piece (64) is fixedly connected with the third liquid guide tube (60), opposite sides of the elastic limiting piece (64) are in mirror-image distribution inclined surface extrusion fit with the lower side of the fourth sliding piece (62), the pressure measuring channel (10) is fixedly connected with a third liquid guide tube (11) and a liquid storage piece (60) positioned between the mirror-distributed fixing plate (63), the third liquid guide tube (65) is far away from the third liquid storage piece (65) through the third liquid guide tube (65) and the third liquid storage piece (65), the side of the connecting pipe close to the third liquid guiding pipe (60) is positioned between the sliding plate (63) and the fixing plate (61) at the lower side.
7. The shock resistant pressure transmitter of claim 6, wherein: the fixing plate (61) on the upper side is provided with air holes for keeping the sliding plate (63) stable during sliding.
8. The shock resistant pressure transmitter of claim 6, wherein: the sum of the supporting forces provided by the elastic limiting piece (64) on the fourth sliding piece (62) in a mirror image mode is smaller than the supporting forces provided by adjacent springs of the sliding plate (63) on the fourth sliding piece (62).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114607867A (en) * | 2022-05-12 | 2022-06-10 | 东营佰旺商贸有限公司 | Oil field has pressure transmitter that has pressure buffer function |
| CN115200779A (en) * | 2022-09-19 | 2022-10-18 | 东营华辰石油装备有限公司 | Pressure transmitter capable of preventing pressure impact |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2001116642A (en) * | 1999-10-14 | 2001-04-27 | Saginomiya Seisakusho Inc | Shock pressure resistant structure of pressure sensor |
| CN210426872U (en) * | 2019-08-22 | 2020-04-28 | 江西万年芯微电子有限公司 | Anti-interference device of pressure sensor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114607867A (en) * | 2022-05-12 | 2022-06-10 | 东营佰旺商贸有限公司 | Oil field has pressure transmitter that has pressure buffer function |
| CN115200779A (en) * | 2022-09-19 | 2022-10-18 | 东营华辰石油装备有限公司 | Pressure transmitter capable of preventing pressure impact |
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