CN202280889U - Built-in pilot safety valve - Google Patents
Built-in pilot safety valve Download PDFInfo
- Publication number
- CN202280889U CN202280889U CN2011203017129U CN201120301712U CN202280889U CN 202280889 U CN202280889 U CN 202280889U CN 2011203017129 U CN2011203017129 U CN 2011203017129U CN 201120301712 U CN201120301712 U CN 201120301712U CN 202280889 U CN202280889 U CN 202280889U
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- CN
- China
- Prior art keywords
- valve
- main valve
- main
- pilot
- guide
- 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 relates to a built-in pilot safety valve, which includes a main valve and a guide valve. The main valve includes a valve body, a valve cap, a main valve seat, a main valve flap, a main valve guide sleeve, a main valve spring, and a main valve limiting sleeve. The utility model is mainly characterized in that the main valve guide sleeve is fixedly mounted on a valve body inlet channel by screw threads; a seal surface of the main valve seat, the main valve flap, the main valve limiting sleeve, and the main valve spring are mounted in the main valve guide sleeve; the guide valve is mounted in an inner hole of the main valve limiting sleeve; the guide valve seat is fixedly mounted in the inner hole of the main valve limiting sleeve by screw threads; a guide valve flap and a guide valve limiting sleeve are mounted in a guide hole made on the back surface of a guide valve seat; a guide valve spring passes through the guide valve limiting sleeve and is mounted between the back surface of the guide valve flap and a spring seat on the guide valve; the spring seat on the guide valve is fixedly mounted at the lower end of an adjusting screw sleeve; a guide valve outlet is communicated with a main valve outlet passage; and when the guide valve flap is opened, a medium is discharged into the main valve outlet passage. The built-in pilot safety valve has the advantages of low manufacturing cost and simplification of installation, and reduces the pollution of leakage points and the medium to the environment. The built-in pilot safety valve is suitable for various safety valves for pipe pressure containers.
Description
Technical field
The utility model relates to valve field, especially a kind of Pilot operated safety valve.
Background technique
Present Pilot operated safety valve is combined through corresponding principle by pilot valve and main valve; Pilot valve and main valve are split type, and pilot valve is made up of a Direct spring loaded safety valve, have independent pressure release function; When pressure medium is elevated to the Set pressure value; Pilot valve is opened, and the medium in the main valve piston chamber of releasing is opened thereby drive main valve.When pressure medium was reduced to a certain degree, pilot valve cut out, and medium gets into the main valve piston chamber, drove main valve and closed.Its major defect is that pilot valve and main valve are the safety valves of two separations, and manufacture cost is high, installation is complicated, leakage point is many, and the pilot valve floss hole is direct emptying simultaneously, and environment is impacted.
Summary of the invention
The purpose of the utility model is the shortcoming that exists to existing technology, provides a kind of pilot valve to be arranged on the inner low cost of manufacture of main valve, simple, leakage point built-in Pilot operated safety valve few, low in the pollution of the environment are installed.
The utility model is realized through following scheme:
This built-in Pilot operated safety valve comprises main valve and pilot valve, and main valve comprises valve body, valve gap, main valve seat, main valve clack, main valve guide sleeve, main spool spring, main valve stop collar.Mainly be that the main valve guide sleeve is fixedly mounted on the valve body inlet passage by screw thread; The sealing surface of main valve seat and main valve clack are installed in the main valve guide sleeve; Main valve guide sleeve sidewall at main valve sealing pair upside is shaped on the through hole that is communicated with outlet passage, and movable cooperation the between main valve clack and the main valve guide sleeve, the main valve stop collar is fixedly mounted on the top of main valve guide sleeve; Under the valve closing state; Have the gap between the lower end surface of main valve stop collar and the main valve clack upper-end surface, main spool spring is installed between the back side and main valve stop collar lower end surface of main valve clack, forms the main spool spring chamber that isolates with the valve outlet channel seal between main valve clack, main valve stop collar, the main valve guide sleeve three; Be provided with traffic conditioner block in the middle of the main valve clack, the Flow-rate adjustment hole at this traffic conditioner block center is communicated with valve body inlet passage and main spool spring chamber; Pilot valve is installed in the endoporus of main valve stop collar; Guide valve seat is fixedly mounted on the main valve stop collar endoporus by screw thread; Upside at the guide valve seat sealing surface is provided with pilot hole, and the pilot valve lobe is installed in this pilot hole and cooperates the formation sealing pair with guide valve seat, is shaped on the through hole that is communicated with outlet passage at the pilot valve lobe with the pilot hole sidewall of guide valve seat sealing pair upside; At pilot hole upper inside wall fixed installation pilot valve stop collar; Under the pilot valve closed condition, have the gap between pilot valve stop collar lower end surface and the pilot valve lobe upper-end surface, the pilot valve spring is installed between the pilot valve lobe back side and the pilot valve upper spring seat; The pilot valve upper spring seat is fixedly mounted on the Adjusting bolt Adjusting screw lower end, and Adjusting bolt Adjusting screw is installed on the valve gap by screw thread.
The utility model has the advantages that pilot valve is installed in the valve body of main valve, low cost of manufacture, install simple, reduce leakage point and medium environmental pollution.
Description of drawings
Fig. 1 is the structure sectional view of the utility model.
Embodiment
Built-in Pilot operated safety valve as shown in Figure 1 comprises main valve and pilot valve, and main valve comprises valve body 1, valve gap 12, main valve seat 2, main valve clack 3, main valve guide sleeve 4, main spool spring 5, main valve stop collar 6.Main valve guide sleeve 4 is fixedly mounted on valve body 1 inlet passage by screw thread; The sealing surface of main valve seat 2 and main valve clack 3 are installed in the main valve guide sleeve 4; Main valve guide sleeve 4 sidewalls at main valve sealing pair upside are shaped on the through hole that is communicated with outlet passage, and the inlet passage medium is from the valve outlet passage of releasing of the through hole on the main valve guide sleeve 4 when main valve clack 3 is opened, and activity cooperates between main valve clack 3 and the main valve guide sleeve 4; Main valve stop collar 6 is fixedly mounted on the top of main valve guide sleeve 4; Under the valve closing state, has the gap between the lower end surface of main valve stop collar 6 and main valve clack 3 upper-end surfaces, the Lift of restriction main valve clack 3; Main spool spring 5 is installed between the back side and main valve stop collar 6 lower end surfaces of main valve clack 3; The main spool spring chamber of formation and valve body 1 outlet passage seal between main valve clack 3, main valve stop collar 6, main valve guide sleeve 4 threes is provided with traffic conditioner blocks 15 in the middle of the main valve clack 3, the Flow-rate adjustment hole at these traffic conditioner block 15 centers is communicated with valve body 1 inlet passage and main spool spring chamber.Pilot valve is installed in the endoporus of main valve stop collar 6, and guide valve seat 7 is fixedly mounted on main valve stop collar 6 endoporus by screw thread, and its center hole is communicated with the main spool spring chamber; Upside at guide valve seat 7 sealing surfaces is provided with pilot hole; Pilot valve lobe 8 is installed in this pilot hole and cooperates the formation sealing pair with guide valve seat 7, is shaped on the through hole that is communicated with outlet passage at pilot valve lobe 8 with the pilot hole sidewall of guide valve seat 7 sealing pair upsides, and the medium when 8 unlatchings of pilot valve lobe in the main spool spring chamber is from this through hole valve outlet passage of releasing; At pilot hole upper inside wall fixed installation pilot valve stop collar 9; Under the pilot valve closed condition, has the gap between pilot valve stop collar 9 lower end surfaces and pilot valve lobe 8 upper-end surfaces, the unlatching distance of restriction pilot valve lobe 8; Pilot valve spring 14 is installed between pilot valve lobe 8 back sides and the pilot valve upper spring seat 13; Pilot valve upper spring seat 13 is fixedly mounted on Adjusting bolt Adjusting screw 10 lower ends, and Adjusting bolt Adjusting screw 10 is installed on the valve gap 12 by screw thread, and safety cover 11 is installed in valve gap 12 upper ends.Through adjustment Adjusting bolt Adjusting screw 10; The power that adjustment pilot valve spring 14 acts on the pilot valve lobe 8; Set the Set pressure value, when valve body 1 suction side pressure medium surpassed Set pressure, the Flow-rate adjustment hole of pressure medium through traffic conditioner block 15 got into the main spool spring chamber and is transmitted to and overcomes pilot valve spring 14 active forces on the pilot valve lobe 8 and push pilot valve lobe 8 open; Medium in the main spool spring chamber is released to valve body 1 outlet passage; Eliminate the pressure medium at main valve clack 3 back sides, the pressure medium of valve body 1 inlet passage promotes main valve clack 3 and opens, and valve body 1 inlet passage medium is directly released to outlet passage.This moment, pilot valve lobe 8 was at the active force of pilot valve spring 14 seat next time, and medium gets into the main spool spring chamber through the Flow-rate adjustment hole of traffic conditioner block 15 simultaneously, when the pressure medium in main spool spring chamber reaches certain value, and 3 times seats of main valve clack, main valve is closed.
Claims (1)
1. a built-in Pilot operated safety valve comprises main valve and pilot valve, and main valve comprises valve body (1), valve gap (12), main valve seat (2), main valve clack (3), main valve guide sleeve (4), main spool spring (5), main valve stop collar (6); It is characterized in that main valve guide sleeve (4) is fixedly mounted on valve body (1) inlet passage by screw thread; The sealing surface of main valve seat (2) and main valve clack (3) are installed in the main valve guide sleeve (4); Main valve guide sleeve (4) sidewall at main valve sealing pair upside is shaped on the through hole that is communicated with outlet passage; The movable cooperation between main valve clack (3) and the main valve guide sleeve (4); Main valve stop collar (6) is fixedly mounted on the top of main valve guide sleeve (4), under the valve closing state, has the gap between the lower end surface of main valve stop collar (6) and main valve clack (3) upper-end surface; Main spool spring (5) is installed between the back side and main valve stop collar (6) lower end surface of main valve clack (3); The main spool spring chamber of formation and valve body (1) outlet passage seal between main valve clack (3), main valve stop collar (6), main valve guide sleeve (4) three is provided with traffic conditioner block (15) in the middle of the main valve clack (3), the Flow-rate adjustment hole at this traffic conditioner block (15) center is communicated with valve body (1) inlet passage and main spool spring chamber; Pilot valve is installed in the endoporus of main valve stop collar (6); Guide valve seat (7) is fixedly mounted on main valve stop collar (6) endoporus by screw thread; Upside at guide valve seat (7) sealing surface is provided with pilot hole, and pilot valve lobe (8) is installed in this pilot hole and cooperates the formation sealing pair with guide valve seat (7), is shaped on the through hole that is communicated with outlet passage at pilot valve lobe (8) with the pilot hole sidewall of guide valve seat (7) sealing pair upside; At pilot hole upper inside wall fixed installation pilot valve stop collar (9); Under the pilot valve closed condition, have the gap between pilot valve stop collar (9) lower end surface and pilot valve lobe (8) upper-end surface, pilot valve spring (14) is installed between pilot valve lobe (8) back side and the pilot valve upper spring seat (13); Pilot valve upper spring seat (13) is fixedly mounted on Adjusting bolt Adjusting screw (10) lower end, and Adjusting bolt Adjusting screw (10) is installed on the valve gap (12) by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203017129U CN202280889U (en) | 2011-08-17 | 2011-08-17 | Built-in pilot safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203017129U CN202280889U (en) | 2011-08-17 | 2011-08-17 | Built-in pilot safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202280889U true CN202280889U (en) | 2012-06-20 |
Family
ID=46227058
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203017129U Expired - Lifetime CN202280889U (en) | 2011-08-17 | 2011-08-17 | Built-in pilot safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202280889U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277550A (en) * | 2013-06-09 | 2013-09-04 | 张家港沙洲船用阀门制造有限公司 | Pilot-operated type relief valve |
| CN105135015A (en) * | 2015-10-14 | 2015-12-09 | 开封市瑞发高中压阀门有限公司 | Pilot valve lower valve clack split-structure pilot operated safety valve |
| CN105422885A (en) * | 2015-11-27 | 2016-03-23 | 苏州市职业大学 | One-way pressure-control tap water valve |
| CN105570470A (en) * | 2015-12-20 | 2016-05-11 | 西安航天动力研究所 | Built-in pilot operated solenoid valve |
| CN106677737A (en) * | 2017-03-10 | 2017-05-17 | 北京奥赛旗石油科技开发有限公司 | Sealing assembly and sealing equipment |
-
2011
- 2011-08-17 CN CN2011203017129U patent/CN202280889U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277550A (en) * | 2013-06-09 | 2013-09-04 | 张家港沙洲船用阀门制造有限公司 | Pilot-operated type relief valve |
| CN105135015A (en) * | 2015-10-14 | 2015-12-09 | 开封市瑞发高中压阀门有限公司 | Pilot valve lower valve clack split-structure pilot operated safety valve |
| CN105135015B (en) * | 2015-10-14 | 2017-11-17 | 开封市瑞发高中压阀门有限公司 | Pilot valve lower Disc Split type structure pilot operated safety valve |
| CN105422885A (en) * | 2015-11-27 | 2016-03-23 | 苏州市职业大学 | One-way pressure-control tap water valve |
| CN105570470A (en) * | 2015-12-20 | 2016-05-11 | 西安航天动力研究所 | Built-in pilot operated solenoid valve |
| CN106677737A (en) * | 2017-03-10 | 2017-05-17 | 北京奥赛旗石油科技开发有限公司 | Sealing assembly and sealing equipment |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120620 |