CN220435173U - A broken chain detection device for hydraulic pressure switch - Google Patents
A broken chain detection device for hydraulic pressure switch Download PDFInfo
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- CN220435173U CN220435173U CN202321983202.3U CN202321983202U CN220435173U CN 220435173 U CN220435173 U CN 220435173U CN 202321983202 U CN202321983202 U CN 202321983202U CN 220435173 U CN220435173 U CN 220435173U
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- 238000001514 detection method Methods 0.000 title claims abstract description 23
- 230000000007 visual effect Effects 0.000 claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 24
- 238000003763 carbonization Methods 0.000 claims abstract description 10
- 239000002912 waste gas Substances 0.000 claims abstract description 9
- 239000000571 coke Substances 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 11
- 101100408464 Caenorhabditis elegans plc-1 gene Proteins 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 230000006698 induction Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Coke Industry (AREA)
Abstract
The utility model provides a broken chain detection device for a hydraulic switch, which comprises: the system comprises a PLC programmable controller, a pressure sensor I, a pressure sensor II, an audible and visual alarm I, an audible and visual alarm II and an audible and visual alarm III; the pressure sensor I is assembled on the gas cylinder; the pressure sensor II is assembled on the waste gas cylinder: the pressure sensor I and the pressure sensor II are connected with a PLC programmable controller; the audible and visual alarm I is arranged on the side of the carbonization chamber, the audible and visual alarm II is arranged on the coke side of the carbonization chamber, and the audible and visual alarm III is arranged in the central control chamber; the audible and visual alarm I, the audible and visual alarm II and the audible and visual alarm III are connected with the PLC; the PLC is connected with an industrial personal computer for controlling the hydraulic exchanger; compared with the existing broken chain detection technology, the chain loosening detection method does not influence the detected pressure value even if the chain is loosened, and improves the stability and safety of the whole equipment.
Description
Technical Field
The utility model relates to the technical field of industrial automation, in particular to a broken chain detection device of a hydraulic switch.
Background
The hydraulic exchanger is a key device for coke oven heating adjustment, and is an important link for realizing the stability, high quality, low consumption and long service life of the coke oven. The PLC program is adopted to control the coke oven gas valve and the waste gas valve to be opened and closed according to the program, so that the conversion between ascending air flow and descending air flow of heating of the coke oven is realized, and the purpose of heating balance of the coke oven is achieved. The hydraulic exchanger mainly comprises a hydraulic station, a coke oven gas cylinder, a coke oven waste gas cylinder and an electrical control system. The hydraulic station is provided with two electric oil pumps and two sets of hydraulic control elements, is used for one device in normal operation, is provided with an energy accumulator, and performs emergency operation in power failure. The working principle of the hydraulic exchanger is as follows: the hydraulic oil output by the hydraulic station flows to the bidirectional acting oil cylinder, and the oil cylinder piston rod moves bidirectionally to drive the steel wire rope tied at the end part of the oil cylinder piston rod, so that all valves are pulled to change direction according to a certain program and time. In the coke oven gas exchange process, if the phenomena of steel wire rope blocking and aging and abrasion occur, the weakest link in the whole mechanism, namely the steel wire rope, can be broken, thereby affecting the whole exchange process, causing great economic loss and even casualties.
The existing steel wire rope breakage detection device of the exchange system is shown in fig. 4, a proximity switch I (14) is matched with a proximity switch induction plate I (15), a proximity switch II (16) is matched with a proximity switch induction plate II (17), the proximity switch is installed on a fixed object around the exchange system through an installation angle steel, and the proximity switch can sense the proximity switch induction plate all the time in the whole exchange stroke. Thus, when the steel wire rope is broken, the magnetic proximity switch induction plate sags under the action of gravity of the magnetic proximity switch induction plate, so that the proximity switch cannot sense signals.
This technique is widely used at present, but has the following disadvantages: 1, the reliability is poor, and because the chain runs for a period of time, the chain breakage detection will signal the coming signal, but the chain breakage is not actually caused; 2, the maintenance amount is large, and the equipment is closed due to the fact that a broken chain is detected to obtain signals, so that maintenance personnel and operators are required to process the gas; 3, because of the instability of the signal, many projects cannot put the signal into control, but are only used for alarming, and manual shift inspection is performed to judge whether the chain is broken or not.
Due to the instability of the existing detection system, the detection system has no due effect.
Disclosure of Invention
According to the technical problem, the broken chain detection device for the hydraulic switch is capable of improving the broken chain detection success rate of the hydraulic switch, reducing maintenance quantity, improving production efficiency and saving cost. In order to realize the reliability, safety and workload reduction of the coke oven exchange system, the utility model develops a broken chain detection system based on a pressure sensor in a hydraulic switch control scheme, overcomes the defects of the existing broken chain detection device, and simultaneously achieves the actual control effect of quickly, safely and effectively detecting broken chains.
The utility model adopts the following technical means:
a chain breakage detection device for a hydraulic switch, comprising: the system comprises a PLC programmable controller, a pressure sensor I, a pressure sensor II, an audible and visual alarm I, an audible and visual alarm II and an audible and visual alarm III;
the pressure sensor I is assembled on a gas cylinder (a valve for controlling gas to be exchanged on time) and is used for detecting the pressure value of the gas cylinder;
the pressure sensor II is assembled on an exhaust gas cylinder (a valve for controlling an exhaust gas path) for detecting a pressure value thereof:
the data of the pressure sensor I and the pressure sensor II are transmitted to the PLC in a wired mode;
the audible and visual alarm I is arranged on the side wall of the carbonization chamber machine, the audible and visual alarm II is arranged in the carbonization chamber Jiao Cebi, and the audible and visual alarm III is arranged in the central control chamber;
the audible and visual alarm I, the audible and visual alarm II and the audible and visual alarm III are connected with the PLC through wires;
the PLC is connected with an industrial personal computer for controlling the hydraulic switch.
Further, the method comprises the steps of,
the pressure sensor I and the pressure sensor II are communicated with a PLC programmable controller through 4-20mA analog quantity signals.
Further, the method comprises the steps of,
the PLC presets a pressure value comparison standard of a pressure sensor I as 35KN; the comparison standard of the pressure value of the preset pressure sensor II is 70KN.
Compared with the existing chain breakage detection technology, even if the chain loosens, the chain breakage detection device does not influence the detected pressure value, not only shows technical advancement, but also improves the stability and safety of the whole equipment, and achieves good control effect in the practical application process.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a control flow diagram of the present utility model;
FIG. 3 is a schematic view of a pressure sensor assembly of the present utility model;
FIG. 4 is a mechanical schematic diagram of a proximity switch-based chain breakage detection device;
in the figure:
the PLC programmable controller 2, the pressure sensor I3, the pressure sensor II 4, the audible and visual alarm I5, the audible and visual alarm II 6, the audible and visual alarm III 7, the industrial personal computer 8, the furnace body brace 9, the tension sensor 10, the oil cylinder 11, the oil cylinder bracket 12, the gas oil cylinder 13, the exhaust oil cylinder 14, the proximity switch I15, the proximity switch sensing plate I16, the proximity switch II 17 and the proximity switch sensing plate II.
Detailed Description
It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.
As shown in fig. 1 to 3, the present utility model provides a chain breakage detection device for a hydraulic switch, comprising: the PLC programmable controller 1, the pressure sensor I2, the pressure sensor II 3, the audible and visual alarm I4, the audible and visual alarm II 5 and the audible and visual alarm III 6;
the pressure sensor I2 is assembled on the gas cylinder and used for detecting the pressure value of the gas cylinder;
when gas exchange is carried out, the gas cylinder pulls and controls the corresponding valve through the chain;
the pressure sensor II 3 is assembled on the waste gas cylinder and is used for detecting the pressure value:
the waste gas cylinder pulls and controls a valve on a waste gas path through a chain;
the data of the pressure sensor I2 and the pressure sensor II 3 are transmitted to the PLC 1 in a wired mode;
the audible and visual alarm I4 is arranged on the side wall of the carbonization chamber machine, the audible and visual alarm II 5 is arranged in the carbonization chamber Jiao Cebi, and the audible and visual alarm III 6 is arranged in the central control chamber;
the audible and visual alarm I4, the audible and visual alarm II 5 and the audible and visual alarm III 6 are all connected with the PLC 1 through wires;
the PLC 1 is connected with an industrial personal computer 7 for controlling the hydraulic switch.
Further, the method comprises the steps of,
the pressure sensor I2 and the pressure sensor II 3 are communicated with the PLC 1 through 4-20mA analog quantity signals.
Further, the method comprises the steps of,
the PLC 1 presets a pressure value comparison standard of a pressure sensor I2 as 35KN; the comparison standard of the pressure value of the preset pressure sensor II 3 is 70KN.
The specific control mode is as follows:
the PLC 1 is connected to the pressure sensor 12 and the pressure sensor 23, and respectively reads the pressure sensor values of the gas cylinder and the waste gas cylinder through 4-20mA analog quantity signals;
the PLC programmable controller 1 is connected to the audible and visual alarm 14, the audible and visual alarm 25 and the audible and visual alarm 36. The audible and visual alarm 14 is used for alarming the side of the carbonization chamber, the audible and visual alarm 25 is used for alarming the coke side of the carbonization chamber, the audible and visual alarm 36 is used for alarming the central control chamber, and the audible and visual alarm is provided for the first time in the central control chamber;
C. the PLC is connected to the industrial personal computer by adopting the industrial Ethernet communication technology, and monitors the operation and fault state of the hydraulic switch.
The first application of the pressure sensor to hydraulic switch chain breakage detection, as shown in fig. 3, includes: furnace body brace 8, tension sensor 9, hydro-cylinder 10, hydro-cylinder support 11.
The control flow is shown in fig. 2, and is specifically as follows:
1 setting the pressure sensor value
According to the system design pressure value, setting a gas cylinder pressure sensor value of 35KN and an exhaust gas cylinder pressure sensor value of 70KN in a PLC program.
2 comparing pressure sensor values
When the gas exchange is carried out, the PLC 1 reads the value from the pressure sensor I2, compares the value with a preset pressure sensor value 35KN, and considers that the chain is not broken when the value is larger than the pressure sensor set value, and the exchanger continues to work normally; when the pressure value is less than the pressure sensor set point, a chain break fault is considered to occur.
When the waste gas is exchanged, the PLC 1 reads the value from the pressure sensor II 3, compares the value with the preset pressure sensor value 70KN, and considers that the chain is not broken when the value is larger than the pressure sensor set value, and the exchanger continues to work normally; when the pressure value is less than the pressure sensor set point, a chain break fault is considered to occur.
3 audible and visual alarm
When the chain breakage fault occurs, the machine side audible and visual alarm I4, the focal side audible and visual alarm II 5 and the central control room audible and visual alarm III 6 send out an alarm to remind workers of the chain breakage fault in time, and meanwhile the chain breakage fault is displayed on a display screen of the industrial personal computer 7 in the central control room and continuously blinks to remind the workers.
4 automatic closing gas
And when the audible and visual alarm is given, the gas valve is automatically closed, so that the safety of equipment and personnel is ensured.
5 on-site handling of broken chain faults
After the gas valve is closed, workers need to check the broken chain condition in the field and repair the broken chain condition.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (3)
1. A chain breakage detection device for a hydraulic switch, comprising: the device comprises a PLC programmable controller (1), a pressure sensor I (2), a pressure sensor II (3), an audible and visual alarm I (4), an audible and visual alarm II (5) and an audible and visual alarm III (6);
the pressure sensor I (2) is assembled on the gas cylinder and used for detecting the pressure value of the gas cylinder;
the pressure sensor II (3) is assembled on the waste gas cylinder and is used for detecting the pressure value:
the data of the pressure sensor I (2) and the pressure sensor II (3) are transmitted to the PLC (1) in a wired mode;
the audible and visual alarm I (4) is arranged on the side wall of the carbonization chamber machine, the audible and visual alarm II (5) is arranged in the carbonization chamber Jiao Cebi, and the audible and visual alarm III (6) is arranged in the central control chamber;
the audible and visual alarm I (4), the audible and visual alarm II (5) and the audible and visual alarm III (6) are all connected with the PLC (1) through wires;
the PLC (1) is connected with an industrial personal computer (7) for controlling the hydraulic switch.
2. A broken chain detection device for a hydraulic switch according to claim 1, wherein,
the pressure sensor I (2) and the pressure sensor II (3) are communicated with the PLC (1) through 4-20mA analog quantity signals.
3. A chain breakage detection device for a hydraulic exchange according to claim 1 or 2, characterized in that,
the PLC (1) presets a pressure value comparison standard of a pressure sensor I (2) as 35KN; the comparison standard of the pressure value of the preset pressure sensor II (3) is 70KN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321983202.3U CN220435173U (en) | 2023-07-26 | 2023-07-26 | A broken chain detection device for hydraulic pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321983202.3U CN220435173U (en) | 2023-07-26 | 2023-07-26 | A broken chain detection device for hydraulic pressure switch |
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| Publication Number | Publication Date |
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| CN220435173U true CN220435173U (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321983202.3U Active CN220435173U (en) | 2023-07-26 | 2023-07-26 | A broken chain detection device for hydraulic pressure switch |
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| CN (1) | CN220435173U (en) |
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- 2023-07-26 CN CN202321983202.3U patent/CN220435173U/en active Active
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