CN104141815A - Overflowing protective valve for pipeline - Google Patents
Overflowing protective valve for pipeline Download PDFInfo
- Publication number
- CN104141815A CN104141815A CN201310170153.6A CN201310170153A CN104141815A CN 104141815 A CN104141815 A CN 104141815A CN 201310170153 A CN201310170153 A CN 201310170153A CN 104141815 A CN104141815 A CN 104141815A
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- CN
- China
- Prior art keywords
- pipeline
- motion stops
- protective valve
- housing
- overcurrent protective
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/34—Excess-flow valves in which the flow-energy of the flowing medium actuates the closing mechanism
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
The invention provides an overflowing protective valve for a pipeline. The overflowing protective valve comprises a shell, a movable piston and an elastic assembly; an inlet and an outlet both for connecting with a pipeline are formed on the two sides of the shell; the movable piston is mounted in the shell in such a manner of translating in the axial direction of the pipeline and thus has an opening position and a closing position, wherein when the movable piston is located in the opening position, the inlet and the outlet are communicated with each other; when the movable piston is located in a closing position, the outlet is sealed by the movable piston; one end of the elastic assembly is associated with the shell, while the other end of the elastic assembly is associated with the movable piston, and the elastic assembly is arranged to trend to keep the movable piston in the opening position when the flow rate of a medium conveyed via the pipeline is normal and to enable the movable piston to move to the closing position by overcoming the elastic restoring force when the flow rate of the medium in the pipeline is greater than the normal flow rate. Due to the adopted structure, the pipeline can be closed rapidly under the circumstance of abnormal flow rate of the internal medium due to a problem of the pipeline.
Description
Technical field
The present invention relates to a kind of Protective valve, specifically, relate to a kind of pipeline overcurrent protective valve.
Background technique
In prior art, the various conveyance conduits for raw materials such as water, G&Os are more and more many, carry mileage more and more longer, pipeline break or the possibility of other fault very large.Once pipeline breaking, waits and finds the place of breaking to remove to close pipeline can to take a long time again, thereby pipeline can not be closed in time, causes the corresponding wasting of resources and the economic loss that is difficult to make up and great potential safety hazard.
Summary of the invention
In order to solve above-mentioned the problems of the prior art, the present invention proposes a kind of pipeline overcurrent protective valve, comprising:
-housing, described housing both sides are respectively equipped with import and the outlet for connecting tube,
-in described housing, be mounted to and can also therefore there is the motion stops of open position and closed position along the axial direction translation of described pipeline, wherein, when described motion stops is positioned at open position, described import and described outlet keep connecting; When described motion stops is positioned at closed position, described motion stops is sealed described outlet,
-elastic component, one end of described elastic component is associated with housing, and the other end is associated with described motion stops, and is arranged to: when the described medium of carrying by pipeline is normal flow rate, be tending towards making described motion stops to remain in open position; When the flow of the medium in described pipeline is greater than described normal flow rate, the elastic-restoring force that makes described motion stops can overcome elastic component moves toward closed position.
Adopt the Protective valve of said structure, in the abnormal situation of flow of the medium (as water, G&O) of the inside that can cause in pipeline generation problem, close rapidly pipeline, thereby loss is dropped to minimum.
Here " normal flow rate " refers to medium (as water, G&O) that pipeline carries flow under normal circumstances.
Here " axial direction of pipeline " refers to direction parallel with pipeline axial or that overlap.
Further, described elastic component comprises:
Connecting rod, described connecting rod inserts in the sliding-groove of described motion stops along the axial direction of described pipeline, and is provided with bar-shaped trough in the one end of inserting described motion stops, in opposite end, via controlling device, be connected with described housing,
The limit element being fixedly connected with described motion stops,
Spring, described spring is arranged in the bar-shaped trough of described connecting rod, and one end of described spring is against the end of bar-shaped trough, and the other end is against described limit element.
This structural design is simple, thereby can not cause mobile obstacle to medium mobile in pipeline.And cost is lower, cost performance is high, does not substantially need care and maintenance, applied range.
Preferably, described motion stops is substantially tapered for sealing the shape of one end of described outlet, near the inner chamber of the housing described outlet be shaped as the taper corresponding with described motion stops.This structure can make closed performance more reliable.
Particularly, described housing comprises the support of being located at enclosure interior and being connected with this housing, described connecting rod is connected with housing by described support, described support comprises the guide rod extending along being parallel to described axial direction, described guide rod inserts in the guiding groove of described motion stops, and be arranged to can be with respect to described motion stops translation.
As mentioned above, guide rod arranges restraint plug moving along axial direction better.
Further, the adjusting part of described controlling device for moving along axial direction for connecting rod described in manual tune, described adjusting part comprises the adjusting handle that stretches out in described outside, the adjustable lever being connected with adjusting handle and the adjusting gear being connected with adjustable lever, described connecting rod is provided with the regulating tooth corresponding with described adjusting gear, described adjusting gear and the engagement of described regulating tooth, for by the described adjusting handle of rotation, regulate described connecting rod moving along axial direction.
Increased the structure of manual tune, at elastic element, broken down or in the situation that other need, can control by artificial rotation adjusting handle the opening and closing of motion stops.
In addition, increase after described manual regulating device, by regulating and controlling handwheel, can limit the maximum critical flow of pipeline medium,, when flow surpasses maximum critical flow, motion stops can be closed.Adopt in this way, the maximum critical flow of pipeline medium can be controlled in the scope of needs.Also meet same pipeline, different flow scope demand.
Preferably, described housing is provided with for the hole through described adjustable lever, and the joint in described adjustable lever and described hole is provided with sealing gasket.This makes to protect the sealing structure performance of valve body to improve.
Further, on described adjustable lever, be arranged with the locking member rotating for locking described adjusting handle.Can prevent that adjusting handle from rotating unfavourably.
Preferably, described locking member is locking nut.
Especially, described Protective valve is connected with described pipeline by screw thread or flange.
Preferably, described housing is divided into front case and the rear case removably connecting.
This structure makes Protective valve installation and maintenance convenient.
Accompanying drawing explanation
Fig. 1 is that the motion stops of overcurrent protective valve of the present invention's one specific embodiment is overlooked internal structure schematic diagram at open position.
Fig. 2 is that the motion stops of the overcurrent protective valve of embodiments of the invention in Fig. 1 is at the side-looking internal structure schematic diagram of open position.
Fig. 3 is that the motion stops of the overcurrent protective valve of embodiments of the invention in Fig. 1 is overlooked internal structure schematic diagram in closed position.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.For person of ordinary skill in the field, from detailed description of the invention, above-mentioned purpose of the present invention, feature and advantage will be apparent.
Pipeline overcurrent protective valve according to shown in Fig. 1-3, comprising: housing 1, motion stops 2, elastic component 3.
Wherein, housing is divided into front case 11 and the rear case 12 removably connecting, and two ends are respectively equipped with for the import 11a of connecting tube and outlet 11b.
Motion stops 2 is mounted to and can and therefore has open position and closed position along the axial direction translation of pipeline in housing 1.When motion stops 2 is positioned at open position, described import 11a and described outlet 11b keep connecting; When motion stops 2 is positioned at closed position, the described outlet 11b of described motion stops 2 sealing.
Elastic component 3 comprises: connecting rod 31, spring 32 and limit element 33.
Wherein, the sliding-groove of described motion stops 2 is inserted in connecting rod 31 one end along the axial direction of described pipeline, and the other end is connected with described housing 1 by being located at front case 11 support 13 inner and that be connected with this front case 11.
Spring 32 is arranged on along axial direction in the bar-shaped trough 311 of connecting rod 31, and one end of described spring 32 and bar-shaped trough 311 are fixing.
Limit element 33 is fixedly connected with motion stops 2, and is arranged to move to limit along described connecting rod 31 telescopic location of described spring 32.
Preferably, support 13 also comprises the guide rod 131 extending along being parallel to described axial direction, and guide rod 131 inserts in the guiding groove of motion stops 2, and be arranged to can relatively described motion stops translation.
As a kind of preferred implementation, motion stops 2 is substantially tapered for sealing the shape of one end of described outlet, near the inner chamber of the housing 2 described outlet 11b be shaped as the taper corresponding with described motion stops 2.This structure can make closed performance more reliable.
When the flow of pipeline surpasses the flow of our setting, the pressure of taper is strengthened, overcome the resistance of spring, taper is moved right.In moving process, the gap between rear case and taper is more and more less, causes the pressure reduction of taper front and back to strengthen, and the pressure that taper is subject to increases sharply, and taper is fast moving under pressure, throttle down.
After fixing a breakdown, the main valve in the place ahead is closed, and manifold pressure reduces, and taper is moved to the left under the effect of spring, opens valve.
In another embodiment of the present invention; Protective valve also comprises the adjusting part 4 moving along axial direction for connecting rod described in manual tune; described adjusting part 4 comprises the adjusting handle 41 that stretches out in described outside; the adjustable lever 42 being connected with adjusting handle and the adjusting gear 43 being connected with adjustable lever; described connecting rod 31 is provided with the regulating tooth 313 corresponding with described adjusting gear 43; described adjusting gear 43 and described regulating tooth 313 engagements; for by the described adjusting handle 41 of rotation, regulate described connecting rod 31 moving along axial direction.
Particularly, the setting of adjusting handle, can be in a scope interval the maximum critical flow of medium in restriction conduit.For example, when the peak rate of flow of pipeline is 10 liters/second, by regulating and controlling handwheel, maximum critical flow can be adjusted to 7 liters/second (when flow reaches 7 liters/second, closing motion stops), also maximum critical flow can be adjusted to 9 liters/second (when flow reaches rise/second, closing motion stops), can be the 7-10 scope of liter/second between the regulatory region of maximum critical flow.
As preferred embodiment, described housing 2 is provided with for the hole through described adjustable lever 42, and the joint in described adjustable lever and described hole is provided with sealing gasket 44.This makes to protect the sealing structure performance of valve body to improve.
On adjustable lever 42, be also arranged with the locking member 45 rotating for locking described adjusting handle 41.Can prevent that adjusting handle from rotating unfavourably.Preferably, described locking member 45 is locking nut.As shown in Figure 2, on front case 11, be also provided with support tube 46, thereby make adjustable lever more fixing.
Preferably, support tube 46 can pass front case 11, and upper and lower end parts is plane, thereby be convenient to secured adjusted bar 42, makes its not vibration up and down.
In addition, described overcurrent protective valve of the present invention also has the numerical tables (not shown) of the maximum critical flow that is used to indicate the medium in pipeline.
Particularly, numerical tables can comprise the numerical value dish (being carved with numerical scale on it) that is arranged on support tube 46 and, the pointer corresponding with the angle of swing of adjusting handle 41, thus show the maximum critical flow of the pipeline that valve is controlled.
Especially, described Protective valve is connected with described pipeline by screw thread or flange.
Protection valve housing of the present invention preferably adopts stainless steel material to make.Stainless Applicable scope is wider, and has stronger decay resistance, the advantages such as long service life.Certainly, but do not get rid of yet those skilled in the art thinkable other material, to adapt to different gas, the requirement of liquid.
Pipeline of the present invention with overcurrent protective valve in use; when flow is that (the normal flow rate is here according to the difference of medium and purposes for normal flow rate; be set as different values) time; medium (as water, G&O) flows through Protective valve from left side; can be to one of taper motion stops pressure to the right, because this pressure is more stable, under the acting in conjunction of spring and regulating handle; can reach a balance, make taper motion stops remain on basic neutral position motionless.
When the flow of pipeline surpasses normal flow rate, the pressure of taper motion stops is strengthened, overcome the elastic-restoring force of spring, taper motion stops is moved right.In moving process, the gap between rear case and taper motion stops is more and more less, causes the pressure reduction before and after taper motion stops to strengthen, and the pressure that taper motion stops is subject to increases sharply, and fast moving under pressure, reaches closed position.
After pipeline is fixed a breakdown, flow transfers to normally, and the main valve in pipeline the place ahead is closed, and manifold pressure reduces, and taper motion stops is moved to the left under the effect of spring, reaches open position.Or manual adjustment handwheel, also can open Protective valve.In needs, also can manual tune, directly close Protective valve.
Pay particular attention to, the above mode by exemplary embodiment is carried out exemplary explanation to the present invention, but the present invention is not limited thereto.Be construed as, in the situation that not departing from design of the present invention, working principle, other replacement that the material of the element in above embodiment, shape can be known by the art personnel or equivalent element, material, applicable shape are replaced.
Claims (10)
1. a pipeline overcurrent protective valve, is characterized in that, comprising:
-housing, described housing both sides are respectively equipped with import and the outlet for connecting tube,
-in described housing, be mounted to and can also therefore there is the motion stops of open position and closed position along the axial direction translation of described pipeline, wherein, when described motion stops is positioned at open position, described import and described outlet keep connecting; When described motion stops is positioned at closed position, described motion stops is sealed described outlet,
-elastic component, one end of described elastic component is associated with housing, and the other end is associated with described motion stops, and is arranged to: when the described medium of carrying by pipeline is normal flow rate, be tending towards making described motion stops to remain in open position; When the flow of the medium in described pipeline is greater than described normal flow rate, the elastic-restoring force that makes described motion stops can overcome elastic component moves toward closed position.
2. pipeline overcurrent protective valve according to claim 1, is characterized in that: described elastic component comprises:
Connecting rod, described connecting rod inserts in the sliding-groove of described motion stops along the axial direction of described pipeline, and is provided with bar-shaped trough in the one end of inserting described motion stops, in opposite end, via controlling device, be connected with described housing,
The limit element being fixedly connected with described motion stops,
Spring, described spring is arranged in the bar-shaped trough of described connecting rod, and one end of described spring is against the end of bar-shaped trough, and the other end is against described limit element.
3. pipeline overcurrent protective valve according to claim 1 and 2, is characterized in that: described motion stops is substantially tapered for sealing one end of described outlet, and near the inner chamber of described housing outlet has the conical by its shape corresponding with described motion stops.
4. pipeline overcurrent protective valve according to claim 2; it is characterized in that: described housing comprises the support of being located at enclosure interior and being connected with this housing; described connecting rod is connected with housing by described support; described support comprises the guide rod extending along being parallel to described axial direction; described guide rod inserts in the guiding groove of described motion stops, and be arranged to can be with respect to described motion stops translation.
5. pipeline overcurrent protective valve according to claim 4; it is characterized in that: the adjusting part of described controlling device for moving along axial direction for connecting rod described in manual tune; described adjusting part comprises the adjusting handle that stretches out in described outside; the adjustable lever being connected with adjusting handle and the adjusting gear being connected with adjustable lever; described connecting rod is provided with the regulating tooth corresponding with described adjusting gear; described adjusting gear and the engagement of described regulating tooth; for by the described adjusting handle of rotation, regulate described connecting rod moving along axial direction.
6. pipeline overcurrent protective valve according to claim 5, is characterized in that: described housing is provided with for the hole through described adjustable lever, and the joint in described adjustable lever and described hole is provided with sealing gasket.
7. pipeline overcurrent protective valve according to claim 6, is characterized in that: on described adjustable lever, be arranged with the locking member rotating for locking described adjusting handle.
8. pipeline overcurrent protective valve according to claim 7, is characterized in that: described locking member is locking nut.
9. pipeline overcurrent protective valve according to claim 1, is characterized in that: described Protective valve is connected with described pipeline by screw thread or flange.
10. pipeline overcurrent protective valve according to claim 1, is characterized in that: described housing is divided into front case and the rear case removably connecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310170153.6A CN104141815A (en) | 2013-05-09 | 2013-05-09 | Overflowing protective valve for pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310170153.6A CN104141815A (en) | 2013-05-09 | 2013-05-09 | Overflowing protective valve for pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104141815A true CN104141815A (en) | 2014-11-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310170153.6A Pending CN104141815A (en) | 2013-05-09 | 2013-05-09 | Overflowing protective valve for pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104141815A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704658A (en) * | 2017-01-09 | 2017-05-24 | 黄福成 | Bidirectional automatic stop valve |
| CN112900581A (en) * | 2021-01-19 | 2021-06-04 | 赵忠爱 | Current-limiting adjusting device for drainage pipeline |
-
2013
- 2013-05-09 CN CN201310170153.6A patent/CN104141815A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106704658A (en) * | 2017-01-09 | 2017-05-24 | 黄福成 | Bidirectional automatic stop valve |
| CN112900581A (en) * | 2021-01-19 | 2021-06-04 | 赵忠爱 | Current-limiting adjusting device for drainage pipeline |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141112 |
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| WD01 | Invention patent application deemed withdrawn after publication |