CN202561165U - Safety pressure relief device of valve - Google Patents
Safety pressure relief device of valve Download PDFInfo
- Publication number
- CN202561165U CN202561165U CN2012202219698U CN201220221969U CN202561165U CN 202561165 U CN202561165 U CN 202561165U CN 2012202219698 U CN2012202219698 U CN 2012202219698U CN 201220221969 U CN201220221969 U CN 201220221969U CN 202561165 U CN202561165 U CN 202561165U
- Authority
- CN
- China
- Prior art keywords
- valve
- relief device
- pressure relief
- middle cavity
- safety pressure
- 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 - Lifetime
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Abstract
The utility model discloses a safety pressure relief device of a valve. The safety pressure relief device of the valve comprises a valve body, wherein the valve body is provided with an import end, a middle cavity and an outlet end, wherein the middle cavity is provided with a safety pressure relief device; an air inlet of the safety pressure relief device is connected into the middle cavity; a valve core is connected in a sliding manner in a channel between the air inlet and an air outlet of the safety pressure relief device; one end of the valve core is pressed to the air inlet while the other end is pressed on a pre-tightening spring; a locking nut and an adjusting nut are arranged outside the pre-tightening spring; and a sealing ring is arranged between the valve core and the air inlet. When a liquid medium detained in the middle cavity of the valve is gasified due to a high temperature, thereby causing abnormal pressure rise in the middle cavity, the medium in the middle cavity can push the valve core of the safety pressure relief device to relief the pressure automatically by depending on the pushing force of the medium, thereby guaranteeing safety and reliability of the valve. The critical pressure for pushing the valve core can be adjusted by an adjusting nut according to a pre-tightening force of the pre-tightening spring. The safety pressure relief device of the valve, disclosed by the utility model, can be widely applied to middle cavity sealing type valves with double valve seats such as a gate valve, a ball valve and a plug valve.
Description
Technical field
The utility model relates to a kind of valve, especially a kind of valve safe pressure relief device.
Background technique
Comprise entrance point, lumen, outlet end in the common valve; When the liquid medium that is trapped in the valve lumen owing to high temperature gasifies; When thereby the lumen pressure anomaly raises; Make liquid in the valve produce to reveal or pressure excessive and produce peril such as valve explosion and take place, so the middle cavity segment of valve must be carried out safety measure.
Summary of the invention
The utility model will solve the shortcoming of above-mentioned existing technology, and a kind of valve safe pressure relief device is provided, and on the valve lumen, safe pressure relief device is installed, and can prevent that system pressure from surpassing certain preset value, and play the device of safety protection effect.
The utility model solves the technological scheme that its technical problem adopts: this valve safe pressure relief device, comprise valve body, and valve body is provided with entrance point, lumen, outlet end, and lumen is provided with safe pressure relief device, and the suction port of safe pressure relief device is connected in the lumen; Slidely connect spool in the suction port of safe pressure relief device and the passage between the air outlet; One end roof pressure of spool is on suction port; The other end roof pressure is on preloading spring, and preloading spring is provided with locking nut and adjusting nut outward, wherein is provided with seal ring between spool and the suction port.In liquid got into the lumen of valve, cavity pressure raise during liquid made owing to high temperature gasifies, the spool of the thrust promotion safe pressure relief device that the lumen medium can dependence itself and releasing pressure automatically, thus guaranteed the safe and reliable of valve.
The air outlet of safe pressure relief device is connected on the entrance point or outlet end of valve body.The air outlet of safe pressure relief device also can be connected the air outlet entrance point or the outlet end of valve body according to the structure of valve.
The effect that the utility model is useful is: the liquid medium that the utility model ought be trapped in the valve lumen is owing to high temperature gasifies; When thereby the lumen pressure anomaly raises; Medium in the lumen can dependence itself spool and the releasing pressure automatically of thrust promotion safe pressure relief device, thereby guaranteed the safe and reliable of valve.And the critical pressure that promotes spool can be regulated with adjusting nut according to the pretightening force of preloading spring.This device can be widely used in the lumen closed type valve of bivalve seats such as gate valve, ball valve, stopcock.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the linkage structure schematic representation between safe pressure relief device and the spool in the utility model.
Description of reference numerals: valve body 1, entrance point 2, lumen 3, outlet end 4, safe pressure relief device 5, suction port 5-1, air outlet 5-2, spool 6, seal ring 7, locking nut 8, preloading spring 9, adjusting nut 10.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further:
With reference to accompanying drawing: this valve safe pressure relief device, comprise valve body 1, valve body 1 is provided with entrance point 2, lumen 3, outlet end 4, and lumen 3 is provided with safe pressure relief device 5, and the suction port 5-1 of safe pressure relief device 5 is connected in the lumen 3; Slidely connect spool 6 in the suction port 5-1 of safe pressure relief device 5 and the passage between the 5-2 of air outlet; One end roof pressure of spool 6 is on suction port 5-1; The other end roof pressure is on preloading spring 9; Preloading spring 9 outer locking nut 8 and the adjusting nuts 10 of being provided with are provided with seal ring 7 between spool 6 and the suction port 5-1.The air outlet 5-2 of safe pressure relief device 5 is connected the entrance point 2 or the outlet end 4 of valve body 1.
The liquid medium that the utility model ought be trapped in valve lumen 3 is owing to high temperature gasifies; When thereby lumen 3 pressure anomalies raise; Medium in the lumen can dependence itself spool 6 and the releasing pressure automatically of thrust promotion safe pressure relief device 5, thereby guaranteed the safe and reliable of valve.And the critical pressure that promotes spool 6 can be regulated with adjusting nut 10 according to the pretightening force of preloading spring 9.This device can be widely used in the lumen closed type valve of bivalve seats such as gate valve, ball valve, stopcock.
Though the utility model is through illustrating and describe with reference to preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.
Claims (2)
1. valve safe pressure relief device; Comprise valve body (1); Valve body (1) is provided with entrance point (2), lumen (3), outlet end (4); It is characterized in that: said lumen (3) is provided with safe pressure relief device (5), and the suction port (5-1) of safe pressure relief device (5) is connected in the lumen (3); Slidely connect spool (6) in the suction port (5-1) of safe pressure relief device (5) and the passage between air outlet (5-2); One end roof pressure of spool (6) is on suction port (5-1); The other end roof pressure is on preloading spring (9); Preloading spring (9) is outer to be provided with locking nut (8) and adjusting nut (10), is provided with seal ring (7) between said spool (6) and the suction port (5-1).
2. valve safe pressure relief device according to claim 1 is characterized in that: the air outlet (5-2) of said safe pressure relief device (5) is connected the outlet end (4) or the entrance point (2) of valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202219698U CN202561165U (en) | 2012-05-17 | 2012-05-17 | Safety pressure relief device of valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202219698U CN202561165U (en) | 2012-05-17 | 2012-05-17 | Safety pressure relief device of valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202561165U true CN202561165U (en) | 2012-11-28 |
Family
ID=47210824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202219698U Expired - Lifetime CN202561165U (en) | 2012-05-17 | 2012-05-17 | Safety pressure relief device of valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202561165U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821961A (en) * | 2013-12-26 | 2014-05-28 | 方正阀门集团有限公司 | Ball valve |
| CN106989951A (en) * | 2017-04-26 | 2017-07-28 | 中国神华能源股份有限公司 | Anti-explosion steel cylinder system |
-
2012
- 2012-05-17 CN CN2012202219698U patent/CN202561165U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821961A (en) * | 2013-12-26 | 2014-05-28 | 方正阀门集团有限公司 | Ball valve |
| CN106989951A (en) * | 2017-04-26 | 2017-07-28 | 中国神华能源股份有限公司 | Anti-explosion steel cylinder system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121128 |
|
| CX01 | Expiry of patent term |