CN103388692B - check valve for gas pipeline - Google Patents
check valve for gas pipeline Download PDFInfo
- Publication number
- CN103388692B CN103388692B CN201310344480.9A CN201310344480A CN103388692B CN 103388692 B CN103388692 B CN 103388692B CN 201310344480 A CN201310344480 A CN 201310344480A CN 103388692 B CN103388692 B CN 103388692B
- Authority
- CN
- China
- Prior art keywords
- valve body
- flap
- gas pipeline
- safety check
- rotating shaft
- Prior art date
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Check Valves (AREA)
Abstract
The invention discloses a gas pipeline check valve, which comprises a valve body and a valve clack, wherein the valve clack is tightly matched with an inner sealing surface of the valve body, a rotating shaft is fixedly connected onto the valve clack, the rotating shaft is hinged onto the valve body, the other end of the rotating shaft extends out of the valve body and is connected with a rocker for opening or closing the valve clack in a sealing way, the rotating shaft is in sealing fit with the hinged part of the valve body, the gas pipeline check valve also comprises a limiting device for limiting the position of the valve clack after the valve clack is opened, and the limiting device comprises a transmission mechanism fixed on the valve body and a stop block arranged at the lower end of the rocker and used for limiting the rocker, and the transmission mechanism is fixedly connected with the stop block.
Description
Technical field
The invention belongs to one-way valve technical field, specifically relate to a kind of gas pipeline safety check.
Background technique
Safety check is the valve that automatically can stop reverse flow of fluids, the flap of safety check is opened under fluid pressure action, fluid flows to outlet side from suction side, when suction side pressure is lower than outlet side, flap is automatically closed in case fluid flows backwards under the effect of the factor such as fluid pressure difference, gravity own, the effect of the such valve of safety check only allows medium to flow to a direction, stop flowing in the other direction, existing safety check valve great majority are automatic operations, under the fluid pressure action of a direction flowing, flap is opened; When fluid flows, by the Gravitative Loads of hydrodynamic pressure, elastic force or flap, flap is sealed on valve seat in the other direction, thus cuts off flowing.
Gas transmission pipeline is higher to pressure loss requirements, and safety check great majority in the market rely on the flowing of gas itself and automatically open, valve closing lobe, flow through the pressure loss after safety check larger, traditional flap is due in order to reduce pressure loss, flap selects the non-return diaphragm be made up of lighter material usually, this flap and valve base seal property poor, particularly when heavy caliber high pressure gas pipeline works, easily by the gas medium avulsion of instantaneous following current or adverse current, lose the effect preventing medium back flow, in addition, traditional safety check lacks monitoring means, cannot judge whether safety check normally works.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of gas pipeline safety check, this gas pipeline safety check is simple to operate, easy to maintenance, operationally, flow through this gas pipeline check valve gas pressure loss little, when quitting work, can automatically control close flap, prevent flow backwards.
In order to achieve the above object, a kind of gas pipeline safety check of the present invention comprises valve body and flap, flap and valve body inner sealing surface closely cooperate, described flap is fixedly connected with rotating shaft, described rotating shaft is hinged on valve body and the other end extends valve body is externally connected with rocking bar for opening or close flap, described rotating shaft and valve body hinged place are sealed and matched, also comprise the limit stoper of restriction flap position after opening for flap, described limit stoper comprises and is fixed on driving mechanism on valve body and is arranged on rocking bar lower end and block for limiting rocking bar, described driving mechanism is fixedly connected with block.
Further, described driving mechanism is set to cylinder, oil cylinder or break.
Further, described limit stoper also comprises the touch sensor opened for detecting flap or cut out, and described touch sensor is arranged on valve body, described rocking bar is fixedly installed the magnetic sheet or iron plate that trigger touch sensor.
Further, described touch sensor is Hall transducer.
Further, described rotating shaft and valve body hinged place are provided with bearing, and described bearing housing is contained in rotating shaft.
Further, between described valve body inner sealing surface and horizontal plane, form the angle of 60 ° ~ 75 °, between described rocking bar and valve body inner sealing surface, form the angle of 120 ° ~ 135 °.
Beneficial effect of the present invention is:
1, gas pipeline safety check of the present invention manually opens flap completely by rocking bar in low-pressure gas pipeline, make gas medium flow through valve pressure loss to reduce, flap is washed open owing to not needing medium, flap selects heavier sheet metal, makes flap intensity high, good seal performance, not fragile, this valve is provided with limit stoper in addition, opens by controlling limit stoper autocontrol valve lobe or closes, simple to operation;
2, gas pipeline safety check of the present invention is by being provided with touch sensor, opening or closing, can access supervisory system and understanding safety check working state at any time for detecting flap.
Accompanying drawing explanation
Fig. 1 is the structural representation of gas pipeline safety check of the present invention;
Fig. 2 is the sectional view of gas pipeline safety check of the present invention.
Reference character: 1-valve body; 2-flap; 3-rotating shaft; 4-driving mechanism; 5-block; 6-rocking bar; 7-magnetic sheet; 8-touch sensor.
Embodiment
Be illustrated in figure 1 the structural representation of gas pipeline safety check of the present invention; Be illustrated in figure 2 the sectional view of gas pipeline safety check of the present invention.Gas pipeline safety check of the present invention comprises valve body 1 and flap 2, flap 2 and valve body 1 inner sealing surface closely cooperate, described flap 2 is fixedly connected with rotating shaft 3, described rotating shaft 3 is hinged on valve body 1 and the other end extends valve body 1 is externally connected with rocking bar 6 for opening or close flap 2, described rotating shaft 3 is sealed and matched with valve body 1 hinged place, also comprise the limit stoper opening rear restriction flap 2 position for flap 2, described limit stoper comprises and is fixed on driving mechanism on valve body 14 and is arranged on rocking bar 6 lower end and block 5 for limiting rocking bar 6, described driving mechanism 4 is fixedly connected with block 5, described driving mechanism is set to cylinder, oil cylinder or break, preferred described driving mechanism is set to break, the present embodiment manually rocking bar 6 opens flap 2, when flap 2 is opened completely, brake drive shaft stretches out and drives block 5 to extend out to rocking bar 6 lower end and fall for limiting rocking bar 6, safety check opens work completely, flap is washed open owing to not needing medium, make gas medium flow through valve pressure loss to reduce, when needs valve closing, brake drive shaft shrinks and drives block 5 to shrink simultaneously, the rocking bar 6 leaned against on block 5 is freely fallen under deadweight and flap Action of Gravity Field, makes flap 2 and valve body 1 inner sealing surface closely cooperate for throttle down, reach the effect preventing gas backflow.
Further, described limit stoper also comprises the touch sensor 8 of opening for detecting flap 2 or cutting out, described touch sensor 8 is arranged on valve body 1, described rocking bar 6 is fixedly installed the magnetic sheet 7 or iron plate that trigger touch sensor, preferred described touch sensor 8 is Hall transducer, the present embodiment, by being provided with touch sensor, being opened for detecting flap or is closed, can access supervisory system and understand safety check working state at any time.
Further, preferred described rotating shaft and valve body hinged place are provided with bearing, and described bearing housing is contained in rotating shaft, and this structure is conducive to the sealing effect and the control that improve safety check, improves the working life of safety check.
Further, form the angle of 60 ° ~ 75 ° between preferred described valve body inner sealing surface and horizontal plane, between described rocking bar and valve body inner sealing surface, form the angle of 120 ° ~ 135 °.
What finally illustrate is, above preferred embodiment is only in order to illustrate technological scheme of the present invention and unrestricted, although by above preferred embodiment to invention has been detailed description, but those skilled in the art are to be understood that, various change can be made to it in the form and details, and not depart from claims of the present invention limited range.
Claims (6)
1. a gas pipeline safety check, comprise valve body and flap, flap and valve body inner sealing surface closely cooperate, it is characterized in that: described flap is fixedly connected with rotating shaft, described rotating shaft is hinged on valve body and the other end extends valve body is externally connected with rocking bar for opening or close flap, described rotating shaft and valve body hinged place are sealed and matched, also comprise the limit stoper of restriction flap position after opening for flap, described limit stoper comprises and is fixed on driving mechanism on valve body and is arranged on rocking bar lower end and block for limiting rocking bar, described driving mechanism is fixedly connected with block.
2. gas pipeline safety check as claimed in claim 1, is characterized in that: described driving mechanism is set to cylinder, oil cylinder or break.
3. gas pipeline safety check as claimed in claim 1 or 2, it is characterized in that: described limit stoper also comprises the touch sensor opened for detecting flap or cut out, described touch sensor is arranged on valve body, described rocking bar is fixedly installed the magnetic sheet or iron plate that trigger touch sensor.
4. gas pipeline safety check as claimed in claim 3, is characterized in that: described touch sensor is Hall transducer.
5. gas pipeline safety check as claimed in claim 1, is characterized in that: described rotating shaft and valve body hinged place are provided with bearing, and described bearing housing is contained in rotating shaft.
6. gas pipeline safety check as claimed in claim 1, is characterized in that: the angle forming 60 ° ~ 75 ° between described valve body inner sealing surface and horizontal plane, forms the angle of 120 ° ~ 135 ° between described rocking bar and valve body inner sealing surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344480.9A CN103388692B (en) | 2013-08-08 | 2013-08-08 | check valve for gas pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310344480.9A CN103388692B (en) | 2013-08-08 | 2013-08-08 | check valve for gas pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103388692A CN103388692A (en) | 2013-11-13 |
| CN103388692B true CN103388692B (en) | 2016-03-02 |
Family
ID=49533056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310344480.9A Active CN103388692B (en) | 2013-08-08 | 2013-08-08 | check valve for gas pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103388692B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500788A (en) * | 2014-11-21 | 2015-04-08 | 广德玉龙泵业有限公司 | Water pipe check valve rotation rack |
| CN109296785B (en) * | 2018-11-01 | 2024-03-29 | 联峰钢铁（张家港）有限公司 | Blower check valve |
| CN113932350A (en) * | 2021-11-03 | 2022-01-14 | 海鹰企业集团有限责任公司 | Novel mobile negative pressure shelter independently exhaust unit and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2224683B3 (en) * | 1973-04-05 | 1976-03-26 | Malbranque Serseg | |
| CN2229012Y (en) * | 1995-06-16 | 1996-06-12 | 李文娟 | Quick open-and-close valve |
| CN200955611Y (en) * | 2006-10-08 | 2007-10-03 | 兰州高压阀门有限公司 | Pneumatic air-extraction non-return valve |
| CN201513610U (en) * | 2009-09-18 | 2010-06-23 | 鞍钢集团矿业公司 | Novel check valve |
| CN102661407A (en) * | 2012-05-31 | 2012-09-12 | 中煤科工集团重庆研究院 | Low-resistance swing check valve for gas pipeline |
| CN202629124U (en) * | 2012-06-05 | 2012-12-26 | 王云鹏 | Valve |
-
2013
- 2013-08-08 CN CN201310344480.9A patent/CN103388692B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2224683B3 (en) * | 1973-04-05 | 1976-03-26 | Malbranque Serseg | |
| CN2229012Y (en) * | 1995-06-16 | 1996-06-12 | 李文娟 | Quick open-and-close valve |
| CN200955611Y (en) * | 2006-10-08 | 2007-10-03 | 兰州高压阀门有限公司 | Pneumatic air-extraction non-return valve |
| CN201513610U (en) * | 2009-09-18 | 2010-06-23 | 鞍钢集团矿业公司 | Novel check valve |
| CN102661407A (en) * | 2012-05-31 | 2012-09-12 | 中煤科工集团重庆研究院 | Low-resistance swing check valve for gas pipeline |
| CN202629124U (en) * | 2012-06-05 | 2012-12-26 | 王云鹏 | Valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103388692A (en) | 2013-11-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 400039 Chongqing Jiulongpo Erlang Branch City Road No. 6 Applicant after: CCTEG CHONGQING RESEARCH INSTITUTE Co.,Ltd. Address before: 400039 Chongqing Jiulongpo Erlang Branch City Road No. 6 Applicant before: Chongqing Research Institute of China Coal Technology & Engineering Group Corp. |
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| COR | Change of bibliographic data | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |