CN102313052A - Built-in pilot operated safety valve - Google Patents
Built-in pilot operated safety valve Download PDFInfo
- Publication number
- CN102313052A CN102313052A CN201110237808A CN201110237808A CN102313052A CN 102313052 A CN102313052 A CN 102313052A CN 201110237808 A CN201110237808 A CN 201110237808A CN 201110237808 A CN201110237808 A CN 201110237808A CN 102313052 A CN102313052 A CN 102313052A
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- valve
- main valve
- pilot
- main
- seat
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- Safety Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
The invention relates to a built-in pilot operated safety valve, which comprises a main valve and a pilot valve, wherein the main valve comprises a valve body, a valve cover, a main valve seat, a main valve flap, a main valve guide sleeve, a main valve spring and a main valve limiting sleeve; primarily, the main valve guide sleeve is fixedly arranged on a valve body inlet passage through threads; a sealing surface of the main valve seat, the main valve flap, the main valve limiting sleeve and the main valve spring are arranged in the main valve guide sleeve; the pilot valve is arranged in an inner hole of the main valve limiting sleeve; a pilot valve seat is fixedly arranged on the inner hole of the main valve limiting sleeve through threads; a pilot valve flap and a pilot valve limiting sleeve are arranged in a guide hole formed on the back face of the pilot valve seat; a pilot valve spring passes through the pilot valve limiting sleeve to be mounted between the back face of the pilot valve flap and a spring seat on the pilot valve; the spring seat on the pilot valve is fixedly arranged on the lower end of an adjusting thread sleeve; a pilot valve outlet is communicated with a main valve outlet passage; and when the pilot valve flap is opened, a medium is discharged into the main valve outlet passage. The valve has the advantages of low manufacturing cost, easiness in installation and capability of reducing leakage points and pollution of the medium to environment, and is suitable to be used as a safety valve for various pipeline pressure vessels.
Description
Technical field
The present invention relates to valve field, especially a kind of Pilot operated safety valve.
Background technique
Present Pilot operated safety valve is to be to combine 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.Like the patent No. is the Pilot operated safety valve of ZL201020207321.6; Comprise main valve and guide valve component; The valve body of main valve is provided with import and outlet, on the valve body end face relative with the main valve flap main valve valve gap is installed, and constitutes the main valve pressure chamber between main valve flap and the main valve valve gap; Guide valve component comprises pilot valve and control valve; Pilot valve flap and pilot valve seat are arranged in the pilot valve valve pocket; Control valve is positioned at the pilot valve valve body; Control valve flap, control valve valve seat are arranged in the control valve valve pocket, are provided with the little axle of interlock between control valve flap and the pilot valve flap, and pilot valve and control valve are installed on the main valve valve gap; Be provided with the inlet pressure duct that the bottom with main valve import and control valve valve pocket connects in main valve flap, limiting stopper, main valve valve gap, the control valve valve body successively, be provided with the air chamber pressure duct that top and main valve pressure chamber with the control valve valve pocket connect on pilot valve valve body and the main valve valve gap successively.This Pilot operated safety valve need not at valve body arranged outside conduit, has avoided misoperation to cause pipe joint to leak.Its major defect is that complex structure, manufacture cost are high, and the direct emptying of pilot valve floss hole impacts environment.
Summary of the invention
The object of the invention provides a kind of pilot valve to be arranged on the inner low cost of manufacture of main valve, built-in Pilot operated safety valve simple in structure, low in the pollution of the environment to the shortcoming that existing technology exists.
The present invention realizes 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; The movable cooperation 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, and between its lower end surface and the main valve clack upper-end surface concrete gap; Main spool spring is installed between the back side and main valve stop collar lower end surface of main valve clack; Form 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, is provided with pilot hole at the upside of guide valve seat sealing surface, and the pilot valve lobe is installed in this pilot hole and cooperates the formation sealing pair with guide valve seat; Be 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, between this pilot valve stop collar lower end surface and the pilot valve lobe upper-end surface concrete gap, and 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.
Advantage of the present invention is that pilot valve is installed in the valve body of main valve, and low cost of manufacture, installation simply reduce leakage point and medium environmental pollution.
Description of drawings
Fig. 1 is a structure sectional view of the present invention.
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; Main valve seat 2 is compressed by main valve guide sleeve 4 and is installed in valve body 1 inlet passage; 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; 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, and main valve stop collar 6 is fixedly mounted on the top of main valve guide sleeve 4; Concrete gap between its lower end surface and main valve clack 3 upper-end surfaces; The unlatching distance 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, forms the main spool spring chamber with valve body 1 outlet passage seal between main valve clack 3, main valve stop collar 6, main valve guide sleeve 4 threes; Be provided with traffic conditioner block 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; 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, is provided with pilot hole at the upside of guide valve seat 7 sealing surfaces; Pilot valve lobe 8 is installed in and interior the cooperation with guide valve seat 7 of this pilot hole forms sealing pair; Be 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, the medium when pilot valve lobe 8 is opened 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; Concrete gap between these 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, and pilot valve upper spring seat 13 is fixedly mounted on Adjusting bolt Adjusting screw 10 lower ends; Adjusting bolt Adjusting screw 10 is installed on the valve gap 12 by screw thread, and safety cover 11 is installed in the upper end on valve gap 12.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 enters 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); Concrete gap between its lower end surface 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), forms the main spool spring chamber with valve body (1) outlet passage seal between main valve clack (3), main valve stop collar (6), main valve guide sleeve (4) three; Be 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; 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); Concrete gap between this 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), and 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 |
|---|---|---|---|
| CN201110237808A CN102313052A (en) | 2011-08-17 | 2011-08-17 | Built-in pilot operated safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110237808A CN102313052A (en) | 2011-08-17 | 2011-08-17 | Built-in pilot operated safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102313052A true CN102313052A (en) | 2012-01-11 |
Family
ID=45426487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110237808A Pending CN102313052A (en) | 2011-08-17 | 2011-08-17 | Built-in pilot operated safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102313052A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565463A (en) * | 2015-01-05 | 2015-04-29 | 宁波耀峰液压电器有限公司 | Pressure regulating valve |
| CN109826984A (en) * | 2019-04-01 | 2019-05-31 | 浙江中煤机械科技有限公司 | A kind of pilot operated safety valve |
| CN110030412A (en) * | 2019-03-08 | 2019-07-19 | 哈电集团哈尔滨电站阀门有限公司 | A kind of heavy caliber multistage pilot operated safety valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0854078A (en) * | 1994-08-11 | 1996-02-27 | Nakakita Seisakusho:Kk | Pilot type safety valve |
| JPH11132347A (en) * | 1997-10-31 | 1999-05-21 | Zexel:Kk | Two stage relief valve |
| US6038856A (en) * | 1997-03-20 | 2000-03-21 | Knorr-Bremse | Governor for air compressors of vehicles |
| CN101520102A (en) * | 2008-02-25 | 2009-09-02 | 沃尔沃建造设备控股（瑞典）有限公司 | Relive valve |
| CN201687999U (en) * | 2010-05-28 | 2010-12-29 | 徐文娴 | Pilot operated safety valve |
-
2011
- 2011-08-17 CN CN201110237808A patent/CN102313052A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0854078A (en) * | 1994-08-11 | 1996-02-27 | Nakakita Seisakusho:Kk | Pilot type safety valve |
| US6038856A (en) * | 1997-03-20 | 2000-03-21 | Knorr-Bremse | Governor for air compressors of vehicles |
| JPH11132347A (en) * | 1997-10-31 | 1999-05-21 | Zexel:Kk | Two stage relief valve |
| CN101520102A (en) * | 2008-02-25 | 2009-09-02 | 沃尔沃建造设备控股（瑞典）有限公司 | Relive valve |
| CN201687999U (en) * | 2010-05-28 | 2010-12-29 | 徐文娴 | Pilot operated safety valve |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104565463A (en) * | 2015-01-05 | 2015-04-29 | 宁波耀峰液压电器有限公司 | Pressure regulating valve |
| CN110030412A (en) * | 2019-03-08 | 2019-07-19 | 哈电集团哈尔滨电站阀门有限公司 | A kind of heavy caliber multistage pilot operated safety valve |
| CN110030412B (en) * | 2019-03-08 | 2024-06-04 | 哈电集团哈尔滨电站阀门有限公司 | Large-caliber multi-stage pilot operated safety valve |
| CN109826984A (en) * | 2019-04-01 | 2019-05-31 | 浙江中煤机械科技有限公司 | A kind of pilot operated safety valve |
| CN109826984B (en) * | 2019-04-01 | 2024-05-24 | 浙江中煤机械科技有限公司 | Pilot-operated safety valve |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120111 |