CN200979000Y - Pressure release valve - Google Patents
Pressure release valve Download PDFInfo
- Publication number
- CN200979000Y CN200979000Y CN 200620093671 CN200620093671U CN200979000Y CN 200979000 Y CN200979000 Y CN 200979000Y CN 200620093671 CN200620093671 CN 200620093671 CN 200620093671 U CN200620093671 U CN 200620093671U CN 200979000 Y CN200979000 Y CN 200979000Y
- Authority
- CN
- China
- Prior art keywords
- relief valve
- pressure relief
- valve
- transformer
- utility
- 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.)
- Expired - Fee Related
Links
- 229920001971 elastomer Polymers 0.000 claims abstract description 11
- 239000005060 rubber Substances 0.000 claims abstract description 11
- 229920000459 Nitrile rubber Polymers 0.000 claims description 6
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 239000003550 marker Substances 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- NTXGQCSETZTARF-UHFFFAOYSA-N buta-1,3-diene;prop-2-enenitrile Chemical compound C=CC=C.C=CC#N NTXGQCSETZTARF-UHFFFAOYSA-N 0.000 abstract 2
- 239000003292 glue Substances 0.000 abstract 2
- 229950000845 politef Drugs 0.000 abstract 1
- 239000002828 fuel tank Substances 0.000 description 4
- 238000005336 cracking Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Safety Valves (AREA)
Abstract
The utility model provides a pressure relief valve which has a protection effect on a transformer, to solve the problem that when the pressure relief valve is opened, sometimes a film disc cannot go back to the original position to form seepage and leakage phenomenon, and that a top rubber ring on a valve seat usually adopts acrylonitrile butadiene, which is easy to have sticking phenomenon with the film disk of the pressure relief valve and affects the normal performance of the transformer. The main point of the utility model is that the utility model comprises a valve seat, the film disc, a spring, a valve mask, a mark pole and a top glue ring, characterized in that the film disc of the relief valve and the valve mask or a spring pad are respectively fixed with a locating cylinder, wherein one locating cylinder is sleeved on another locating cylinder, the top glue ring is a component structure of acrylonitrile butadiene embedded by politef. The usage of the utility model is that the utility model is equipped on an oil box cover of a transformer or the side wall to have a protection effect on the transformer.
Description
Technical field
The utility model belongs to the parts or the assembly of oil-filled electric transformer, and it is installed on the fuel tank case lid or sidewall of transformer, when tank pressure surpasses specified value, and a kind of device that transformer is shielded.
Background technique
At present; what the pressure protective device of oil immersed transformer adopted is a kind of pressure relief valve; its objective is: when making the oil tank for oil immersion type transformer internal pressure surpass safety limit, be not damaged, its internal pressure is discharged for the protection oil tank of transformer because of failure and other reasons.The structure of pressure relief valve is: valve seat, membranous disc, spring, valve bonnet and stage clip pad, marker post and electrical switch etc. that seal ring is housed.Its deficiency is: 1, behind the pressure relief valve breakdown action, original position (tilt and can not close fully with valve seat) appears being returned in the membranous disc of relief valve sometimes, thereby pressure relief valve can not fully reliably be closed, cause ooze, oil leakage phenomenon.2, the top cushion rubber on the valve seat generally adopts nitrile butadiene rubber, pinning phenomenon appearred in membranous disc easy and pressure relief valve after the sealing circle was installed a period of time, thereby the timeliness cracking pressure that pressure relief valve occurs is far longer than the standard code scope, when causing the oil tank of transformer internal pressure to reach the cracking pressure of pressure relief valve, its valve can not in time be opened the pressure that discharges in the fuel tank, causes transformer oil carton deformed or explosion.Influence the normal operation of transformer.
Summary of the invention
The purpose of this utility model is to provide a kind of a kind of pressure relief valve that can avoid above-mentioned deficiency.
The purpose of this utility model is achieved in that it has valve seat, membranous disc, spring, valve bonnet, marker post, top cushion rubber, is characterized in that:
1, each fixes a directional tube on the membranous disc of pressure relief valve and valve bonnet or stage clip pad, one of them directional tube is enclosed within on another directional tube, two directional tubes that are nested play the effect of guide rail, promptly when the unlatching of pressure relief valve pressurized membranous disc, or the oil tank of transformer internal pressure is when falling after rise less than the closing pressure membranous disc of pressure relief valve, membranous disc is realized reliably opening or closing by the location of the directional tube that is nested, guarantees the safe operation of transformer.
2, the top cushion rubber of pressure relief valve is the composite structure that teflon coats nitrile butadiene rubber, make nitrile butadiene rubber and teflon complementary on performance, both can satisfy the requirement of pressure relief valve seal parameters index, solved the sticking and problem of relief valve top cushion rubber and membranous disc again, made pressure relief valve realize fully fuel tank internal is carried out the effect that pressure discharges.
The utility model is compared the good effect that has with the prior art scheme:
1, the lifting of the membranous disc of pressure relief valve realizes spacing by two directional tubes that are nested, after being takeoff, membranous disc can accurately reply, reach the function that pressure relief valve is reliably closed, avoid since the membranous disc of pressure relief valve accurately return (inclination) cause the interior transformer oil of oil tank of transformer by membranous disc place spillover.
2, the use of compound top cushion rubber, make the timeliness unlatching performance of pressure relief valve obtain effectively, accurately improve, the timeliness cracking pressure value that guarantees pressure relief valve meets standard-required, has solved the sticking and problem of relief valve top cushion rubber and membranous disc, guarantees the safe operation of transformer.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an another kind of structural representation of the present utility model.
Embodiment
Referring to Fig. 1, it has valve seat 7, membranous disc 5, spring 8, valve bonnet 2, marker post 1, on the membranous disc of pressure relief valve and valve bonnet, respectively weld a directional tube 4 and 3, wherein the directional tube 3 of valve bonnet is enclosed within the outside of the directional tube 4 of membranous disc, two directional tubes that are nested play the effect of guide rail, promptly when the unlatching of pressure relief valve pressurized membranous disc, or the oil tank of transformer internal pressure is when falling after rise less than the closing pressure membranous disc of pressure relief valve, membranous disc is realized reliably opening or closing by the location of the directional tube that is nested, guarantees the safe operation of transformer.The top cushion rubber 6 of pressure relief valve coats the composite structure of nitrile butadiene rubber for teflon, make nitrile butadiene rubber and teflon complementary on performance, both can satisfy the requirement of pressure relief valve seal parameters index, solved the sticking and problem of relief valve top cushion rubber and membranous disc again, made pressure relief valve realize fully fuel tank internal is carried out the effect that pressure discharges.
Referring to Fig. 2, be the pressure relief valve of another kind of mode of structure.With Fig. 1 difference be, it is provided with stage clip pad 9, and directional tube 3 is welded on the stage clip pad 9 of relief valve, and all the other are identical with Fig. 1.
Claims (2)
1, a kind of pressure relief valve, it has valve seat, membranous disc, spring, valve bonnet, marker post, top cushion rubber, it is characterized in that: each fixes a directional tube on the membranous disc of pressure relief valve and valve bonnet or stage clip pad, and one of them directional tube is enclosed within on another directional tube.
2, according to the described pressure relief valve of claim 1, it is characterized in that: said top cushion rubber is the composite structure that teflon coats nitrile butadiene rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093671 CN200979000Y (en) | 2006-10-17 | 2006-10-17 | Pressure release valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620093671 CN200979000Y (en) | 2006-10-17 | 2006-10-17 | Pressure release valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200979000Y true CN200979000Y (en) | 2007-11-21 |
Family
ID=38979377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620093671 Expired - Fee Related CN200979000Y (en) | 2006-10-17 | 2006-10-17 | Pressure release valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200979000Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241607A (en) * | 2015-05-25 | 2016-01-13 | 苏州市华安普电力工程有限公司 | Pressure release testing device |
-
2006
- 2006-10-17 CN CN 200620093671 patent/CN200979000Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241607A (en) * | 2015-05-25 | 2016-01-13 | 苏州市华安普电力工程有限公司 | Pressure release testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090109 Address after: Liaoning province Shenyang City Yuhong District Sha Ling Zhen Nan Jing Jie, zip code: 110141 Patentee after: Shenyang Transformer Institute Electrical Technology Co., Ltd. Address before: Hunnan New Century Road in Shenyang city of Liaoning Province, No. 39, zip code: 110179 Co-patentee before: Guan Qinggang Patentee before: Sun Yan Hong Co-patentee before: Wang Yulan |
|
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG SHENBIANSUO ELECTRIC SCIENCE CO., LTD. Free format text: FORMER OWNER: SUN YANHONG Effective date: 20090109 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenyang Transformer Research Institute Co., Ltd. Assignor: Shenyang Transformer Institute Electrical Technology Co., Ltd. Contract fulfillment period: 2009.3.18 to 2016.3.17 Contract record no.: 2009210000051 Denomination of utility model: Pressure relief valve Granted publication date: 20071121 License type: Exclusive license Record date: 20090325 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2009.3.18 TO 2016.3.17; CHANGE OF CONTRACT Name of requester: SHENYANG TRANSFORMER RESEARCH INSTITUTE CO., LTD. Effective date: 20090325 |
|
| ASS | Succession or assignment of patent right |
Owner name: SHENYANG TRANSFORMER RESEARCH INSTITUTE CO., LTD. Free format text: FORMER OWNER: SHENYANG SHENBIANSUO ELECTRIC SCIENCE CO., LTD. Effective date: 20090821 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20090821 Address after: Hunnan New Century Road in Shenyang city of Liaoning Province, No. 39, zip code: 110179 Patentee after: Shenyang Transformer Research Institute Co., Ltd. Address before: Liaoning province Shenyang City Yuhong District Sha Ling Zhen Nan Jing Jie, zip code: 110141 Patentee before: Shenyang Transformer Institute Electrical Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20141017 |
|
| EXPY | Termination of patent right or utility model |