CN203240030U - Pilot-operated type safety relief valve - Google Patents
Pilot-operated type safety relief valve Download PDFInfo
- Publication number
- CN203240030U CN203240030U CN 201320286937 CN201320286937U CN203240030U CN 203240030 U CN203240030 U CN 203240030U CN 201320286937 CN201320286937 CN 201320286937 CN 201320286937 U CN201320286937 U CN 201320286937U CN 203240030 U CN203240030 U CN 203240030U
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- China
- Prior art keywords
- valve
- pilot
- flap
- sealing
- end surface
- 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
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Abstract
The utility model relates to a pilot-operated type safety relief valve, which comprises a main valve and a pilot valve, wherein the main valve comprises a valve body, a valve seat, a valve clack and a valve cover, an outer cylindrical surface of the valve clack and an inner circle wall of a guide valve are matched in a sealed mode, the upper end of the guide sleeve is arranged between the valve body and the valve cover in a sealed mode, a spring is arranged between the upper end surface of the valve clack and the lower end surface of the valve cover, an inlet of the pilot valve is respectively communicated with an inlet of the valve body and a spring cavity arranged on the upper end surface of the valve clack through a pipe, a sealing ring is substantially arranged on the lower end surface of the valve clack, and a ring-shaped anti-collision slot is arranged on a matched surface of the sealing ring and the valve seat. The pilot-operated type safety relief valve slows down impact force between a sealing surface of the valve clack and the sealing surface of the valve seat during the take-off and return process, reduces damage to the sealing surface of the valve clack, is reliable in sealing performance, and is suitable for pressure safety valves such as pipelines and boilers and the like.
Description
Technical field
The utility model relates to valve field, particularly about a kind of safety valve.The utility model is applicable to pipeline, boiler equal pressure container safety valve.
Background technique
Pilot operated safety valve is comprised of main valve and pilot valve, main valve is comprised of valve body, valve seat, flap, valve gap, the pilot valve snout cavity is communicated with valve body of main valve import and main valve flap control chamber respectively, main valve flap and valve seat planes are sealed and matched, its major defect is that sealing surface easily is knocked wearing and tearing behind the flap long-term take-off of process and time seat, make to occur between flap and the valve seat leaking, sealability is unreliable.
Summary of the invention
The purpose of this utility model is the shortcoming that exists for prior art, a kind of valve clack sealing surface impact resistance is provided, is wearing and tearing, the reliable leading type safety relief valve of sealability.
The technical solution of the utility model comprises main valve and pilot valve; Main valve comprises valve body, valve seat, flap, valve gap, and the external cylindrical surface of flap cooperates with the inner round wall motive sealing of guide sleeve, and the sealing of guide sleeve upper end is installed between valve body and the valve gap mounting spring between flap upper-end surface and the valve gap lower end surface; The import of pilot valve is communicated with by the spring chamber of conduit with valve body import and flap upper-end surface respectively; Mainly be that a seal ring is installed in the flap lower end surface, be shaped with annular crashworthiness groove on sealing circle and the valve seat fitting surface.
The utility model has the advantages that to be shaped with annular crashworthiness groove on the valve clack sealing ring, in flap take-off and time seat process, slow down the impact force between valve clack sealing surface and the sealing surface of seat, reduce the damage to valve clack sealing surface, improve sealability.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is I place partial structurtes enlarged view among the utility model Fig. 1.
Embodiment
Leading type safety relief valve as shown in Figure 1 comprises main valve and pilot valve 8; Main valve comprises valve body 1, valve seat 2, flap 4, valve gap 7, the external cylindrical surface of flap 4 cooperates with the inner round wall motive sealing of guide sleeve 5, the sealing of guide sleeve 5 upper ends is installed between valve body 1 and the valve gap 7, mounting spring 6 between flap 4 upper-end surfaces and valve gap 7 lower end surfaces forms spring chamber between flap 4, guide sleeve 5, valve gap 7 threes; The import of pilot valve 8 is communicated with the spring chamber of valve body 1 import and flap 4 upper-end surfaces by conduit 9 respectively, when valve body 1 inlet pressure is lower than the Set pressure of pilot valve 8, pilot valve 8 is in closed condition, valve body 1 inlet passage pressure medium enters spring chamber, flap 4 is closed, when valve body 1 inlet pressure surpassed the Set pressure of pilot valve 8, pilot valve 8 was opened pressure medium in the spring chamber is released, and flap 4 is opened; A seal ring 3 is installed in flap 4 lower end surfaces, be shaped with annular crashworthiness groove on sealing circle 3 and valve seat 2 fitting surfaces, slow down flap 4 take-offs and return the impact force between the sealing surface and valve seat 2 sealing surfaces in the seat process, reduction is to damage and the wearing and tearing of flap 4 sealing surfaces, as shown in Figure 2.
Claims (1)
1. a leading type safety relief valve comprises main valve and pilot valve (8); Main valve comprises valve body (1), valve seat (2), flap (4), valve gap (7), the external cylindrical surface of flap (4) cooperates with the inner round wall motive sealing of guide sleeve (5), the sealing of guide sleeve (5) upper end is installed between valve body (1) and the valve gap (7) mounting spring (6) between flap (4) upper-end surface and valve gap (7) lower end surface; The import of pilot valve (8) is communicated with the spring chamber of valve body (1) import and flap (4) upper-end surface by conduit (9) respectively; It is characterized in that flap (4) lower end surface installs a seal ring (3), be shaped with annular crashworthiness groove on the fitting surface of sealing circle (3) and valve seat (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320286937 CN203240030U (en) | 2013-05-09 | 2013-05-09 | Pilot-operated type safety relief valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320286937 CN203240030U (en) | 2013-05-09 | 2013-05-09 | Pilot-operated type safety relief valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203240030U true CN203240030U (en) | 2013-10-16 |
Family
ID=49317328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320286937 Expired - Fee Related CN203240030U (en) | 2013-05-09 | 2013-05-09 | Pilot-operated type safety relief valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203240030U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006191A (en) * | 2014-05-15 | 2014-08-27 | 杭州杭氧工装泵阀有限公司 | Safety valve structure with pilot arranged externally |
| CN104100747A (en) * | 2014-07-09 | 2014-10-15 | 扬中市阀门厂有限公司 | Pilot type safety valve |
| CN104154283A (en) * | 2014-08-11 | 2014-11-19 | 袁前灿 | All-metal sealing high-temperature pilot inner discharging type pressure release valve |
| CN105465461A (en) * | 2015-02-17 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Pilot-operated type decompression valve triggered through pin bending |
| CN108679280A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | Vibration proof pilot operated safety valve |
-
2013
- 2013-05-09 CN CN 201320286937 patent/CN203240030U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104006191A (en) * | 2014-05-15 | 2014-08-27 | 杭州杭氧工装泵阀有限公司 | Safety valve structure with pilot arranged externally |
| CN104100747A (en) * | 2014-07-09 | 2014-10-15 | 扬中市阀门厂有限公司 | Pilot type safety valve |
| CN104154283A (en) * | 2014-08-11 | 2014-11-19 | 袁前灿 | All-metal sealing high-temperature pilot inner discharging type pressure release valve |
| CN105465461A (en) * | 2015-02-17 | 2016-04-06 | 江苏瑞朗博机械设备有限公司 | Pilot-operated type decompression valve triggered through pin bending |
| CN108679280A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | Vibration proof pilot operated safety valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131016 Termination date: 20210509 |