CN104235478A - Impulse safety valve - Google Patents
Impulse safety valve Download PDFInfo
- Publication number
- CN104235478A CN104235478A CN201410464734.5A CN201410464734A CN104235478A CN 104235478 A CN104235478 A CN 104235478A CN 201410464734 A CN201410464734 A CN 201410464734A CN 104235478 A CN104235478 A CN 104235478A
- Authority
- CN
- China
- Prior art keywords
- main valve
- valve
- piston
- pilot
- main
- 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.)
- Granted
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
- F16K31/143—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a piston
Abstract
The invention relates to an impulse safety valve, which comprises a guide valve and a main valve. The impulse safety valve is mainly characterized in that a normally closed structure is adopted between the inlet and the control port of the guide valve; a main valve seat is of a bowl-shaped structure comprising an inner layer and an outer layer; an exhaust cavity is formed between the outer layer and the inner layer of the main valve seat, and the lower end face of the main valve seat is provided with a valve seat seal face; a main valve clack is of a bowl-shaped structure of which the opening is upward, and is arranged at the inlet side of the main valve seat; a main valve deck is of a barrel-shaped structure comprising an inner layer and an outer layer; an exhaust space is formed between the outer layer and the inner layer of the main valve deck; the exhaust space is respectively communicated with an outlet in the upper end face of the main valve deck and the exhaust cavity of the main valve seat; the inner cavity wall of the inner layer of the main valve deck is in dynamic seal fit with the excircle face of a piston; a control cavity is formed between the upper end face of the piston and the inner cavity of the inner layer of the main valve deck; a main spring is arranged between the bottom face of the interior of the inner layer of the main valve seat and the lower end face of the piston in a compression manner. The impulse safety valve has the advantages of being low in flow resistance, big in flow coefficient, fast in pressure relief speed, good in sealability and the like.
Description
Technical field
The present invention relates to a kind of safety valve, especially relate to a kind of momentum safety valve.
Background technique
Existing momentum safety valve be all by a pilot valve and a main valve combined, pilot valve is made up of the safety valve of spring structure or lever-type structure two type, main valve then to drive by pilot valve by one and is that the valve of angie type structure forms, valve clack sealing surface is positioned at above sealing surface of seat, spring force is relied on to be compressed and valve base sealing by flap, its major defect is that volume is large, valve is after unlatching, in the process of media discharge, flow resistance is large, flow coefficient is little, pressure release speed is slow, in off position, valve body import pressure medium produces thrust upwards to flap, this thrust reduces flap sealing force, poor sealing performance.
Summary of the invention
The object of the invention is the shortcoming existed for prior art, provide that a kind of volume is little, flow resistance is low, flow coefficient is large, pressure release speed soon, the momentum safety valve of good seal performance.
The present invention realizes by following technical solution:
This momentum safety valve comprises pilot valve, main valve, pilot valve comprises pilot valve body, pilot valve lid, pilot valve lobe, pilot stem and spring pressure setting device, main valve comprises main valve body, main valve lid, main valve seat, main valve clack, main valve stem, main spring, pilot valve is communicated with pressurized container with the inlet passage of main valve, and the control mouth of pilot valve is communicated with the control chamber of main valve; Mainly pilot valve import and control to adopt normally closed structure between mouth; Main valve seat is inside and outside two-layer bowl shaped structure, and form exhaust cavity between its skin and internal layer, main valve seat lower end surface is provided with sealing surface of seat, and this sealing surface of seat is fitted in the inlet passage of main valve body by main valve lid; Main valve clack is the bowl shaped structure of opening upwards, is arranged on the suction side of main valve seat, and upper-end surface is shaped with the valve clack sealing surface cooperatively interacted with sealing surface of seat, and center, upper-end surface is fixedly connected with main valve stem lower end; Main valve lid is inside and outside two-layer cylindrical structure, exhaust space is formed between its skin and internal layer, the exhaust cavity of outlet and main valve seat that this exhaust space covers end face with main valve is respectively connected, the internal chamber wall of main valve lid internal layer coordinates with the motive sealing of outside piston face, form control chamber between the inner chamber of piston upper-end surface and main valve lid internal layer, piston lower surface is fixedly connected with main valve stem upper end; Main spring compression is arranged between main valve seat internal layer inner bottom surface and piston lower surface.
In above technological scheme, in valve pocket between the control mouth of pilot valve and floss hole, piston-type switch is set, this piston-type switch is by sealing the piston sleeve be fixedly mounted in valve pocket and forming the piston coordinated with this piston sleeve motive sealing, between piston lower surface center hole and pilot valve lobe back side center hole, push rod is installed, pilot stem lower end is inserted in the center hole of piston upper-end surface, piston sleeve sidewall is shaped with and the through hole controlling mouth and be communicated with floss hole respectively, in the middle part of piston, periphery is shaped with annular groove, align with two through holes of piston sleeve sidewall when pilot valve lobe closed condition in the position of this annular groove.
In above technological scheme, spring pressure setting device is arranged between pilot stem and pilot valve lid, is connected with the end winding support of handle in pilot stem upper end portion, and to cover the support of end face hinged with being fixedly mounted on pilot valve for the middle part of handle.
Advantage of the present invention is: main valve pressure relief opening is in the rectilinear direction of inlet passage, and flow resistance is low, flow coefficient is large, pressure release speed is fast; Main valve clack is positioned at main valve seat suction side, and pressure medium increases the sealing force between main valve clack and main valve seat, good seal performance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
According to Fig. 1, momentum safety valve of the present invention comprises pilot valve, main valve, pilot valve comprises pilot valve body 10, pilot valve lid 17, pilot valve lobe 11, pilot stem 14 and spring pressure setting device, main valve comprises main valve body 1, main valve lid 7, main valve seat 4, main valve clack 2, main valve stem 3, main spring 6, pilot valve is communicated with pressurized container with the inlet passage of main valve, and the control mouth 20 of pilot valve is communicated with the control chamber 9 of main valve; The import of pilot valve and control to adopt normally closed structure between mouth 20, namely under regular operating pressures, pilot valve lobe 11 and the valve seat place in pilot valve body 10 inlet passage are sealed and matched state, the floss hole 12 of pilot valve and control to locate connected state between mouth 20; Main valve seat 4 is inside and outside two-layer bowl shaped structure, upward, form exhaust cavity 5 between its skin and internal layer, this exhaust cavity 5 is communicated with main valve seat 4 inlet passage its bowlshaped mouth, main valve seat 4 lower end surface is provided with sealing surface of seat, and this sealing surface of seat is fitted in the inlet passage of main valve body 1 by main valve lid 7; Main valve clack 2 is the bowl shaped structure of opening upwards, be arranged on the suction side of main valve seat 4, its upper-end surface is shaped with the valve clack sealing surface cooperatively interacted with sealing surface of seat, center, upper-end surface is fixedly connected with main valve stem 3 lower end, in off position, pressure medium increases the sealing force between main valve clack 2 and sealing surface of seat, improves sealability; Main valve lid 7 is inside and outside two-layer cylindrical structure, exhaust space is formed between its skin and internal layer, this exhaust space is connected with the outlet of main valve lid 7 upper-end surface and the exhaust cavity 5 of main valve seat 4 respectively, when main valve clack 2 is opened, main valve body 1 inlet passage medium is by the exhaust cavity 5 of main valve seat 4 and the exhaust space of main valve lid 7 outlet drain to main valve lid 7 upper-end surface, the internal chamber wall of main valve lid 7 internal layer coordinates with the motive sealing of piston 8 periphery, form control chamber 9 between the inner chamber of piston 8 upper-end surface and main valve lid 7 internal layer, piston 8 lower end surface is fixedly connected with main valve stem 3 upper end; Main spring 6 compression is arranged between main valve seat 4 internal layer inner bottom surface and piston 8 lower end surface, makes main spring 6 pairs of main valve clacks 2 produce elastic force upwards, and this elastic force and pressure medium acting in conjunction make main valve clack 2 and sealing surface of seat compression fit seal.When pressure medium reaches Set pressure value, pilot valve inlet pressure enters main valve control chamber 9 by controlling mouth 20, promotes piston 8 and is opened by main valve clack 2, main valve inlet pressure medium of releasing.
In valve pocket between the control mouth 20 of pilot valve and floss hole 12, piston-type switch is set, this piston-type switch is by sealing the piston sleeve 22 be fixedly mounted in valve pocket and forming the piston column 13 coordinated with this piston sleeve 22 motive sealing, namely piston sleeve 22 periphery and pilot valve body 10 valve pocket inner wall sealing fixedly mount, piston sleeve 22 internal chamber wall coordinates with piston column 13 motive sealing, between piston column 13 lower end surface center hole and pilot valve lobe 11 back side center hole, push rod 21 is installed, pilot stem 14 lower end is inserted in the center hole of piston column 13 upper-end surface, piston sleeve 22 sidewall is shaped with and the through hole controlling mouth 20 and be communicated with floss hole 12 respectively, in the middle part of piston column 13, periphery is shaped with annular groove, align with two through holes of piston sleeve 22 sidewall when pilot valve lobe 11 closed condition in the position of this annular groove, by on piston sleeve 22 with floss hole 12 with control two through holes that mouth 20 is communicated with and be communicated with by annular groove, and when pressure medium reaches Set pressure value, pilot valve inlet pressure promotes pilot valve lobe 11 and opens, pilot valve lobe 11 promotes piston column 13 moves by push rod 21, the annular groove on piston column 13 is made to leave lead to the hole site on piston sleeve 22, through hole on piston sleeve 22 is closed by piston column 13 periphery, by floss hole 12 and control mouth 20 seal isolation, and pilot valve import is communicated with control mouth 20, pilot valve inlet pressure is introduced main valve control chamber 9 by controlling mouth 20, piston 8 promotes main valve stem 3 and main valve clack 2 is opened pressure in relieving pressure container.
Spring pressure setting device is arranged between pilot stem 14 and pilot valve lid 17, be made up of setting spring 15 and nut 18 of adjusting, setting spring 15 is arranged between upper spring seat 16 on pilot stem 14 and lower spring cup, nut 18 of adjusting is threaded with pilot valve lid 17, its lower end withstands in the upper-end surface of upper spring seat 16, be connected with the end winding support of handle 19 in pilot stem 14 upper end portion, the middle part of handle 19 is hinged with the support being fixedly mounted on pilot valve lid 17 upper-end surface.Pressure handle 19 can pull-up pilot stem 14, is opened by pilot valve lobe 11, realizes manual relieving pressure.
Claims (3)
1. a momentum safety valve, comprise pilot valve, main valve, pilot valve comprises pilot valve body (10), pilot valve lid (17), pilot valve lobe (11), pilot stem (14) and spring pressure setting device, main valve comprises main valve body (1), main valve lid (7), main valve seat (4), main valve clack (2), main valve stem (3), main spring (6), pilot valve is communicated with pressurized container with the inlet passage of main valve, and the control mouth (20) of pilot valve is communicated with the control chamber (9) of main valve; It is characterized in that the import of pilot valve and control to adopt normally closed structure between mouth (20); Main valve seat (4) is inside and outside two-layer bowl shaped structure, exhaust cavity (5) is formed between its skin and internal layer, this exhaust cavity (5) is communicated with main valve seat (4) inlet passage, main valve seat (4) lower end surface is provided with sealing surface of seat, and this sealing surface of seat is fitted in the inlet passage of main valve body (1) by main valve lid (7); The bowl shaped structure that main valve clack (2) is opening upwards, be arranged on the suction side of main valve seat (4), its upper-end surface is shaped with the valve clack sealing surface cooperatively interacted with sealing surface of seat, and center, upper-end surface is fixedly connected with main valve stem (3) lower end; Main valve lid (7) is inside and outside two-layer cylindrical structure, exhaust space is formed between its skin and internal layer, this exhaust space is connected with the outlet of main valve lid (7) upper-end surface and the exhaust cavity (5) of main valve seat (4) respectively, the internal chamber wall of main valve lid (7) internal layer coordinates with piston (8) periphery motive sealing, form control chamber (9) between the inner chamber of piston (8) upper-end surface and main valve lid (7) internal layer, piston (8) lower end surface is fixedly connected with main valve stem (3) upper end; Main spring (6) compression is arranged between main valve seat (4) internal layer inner bottom surface and piston (8) lower end surface.
2. momentum safety valve according to claim 1, it is characterized in that arranging piston-type switch in the valve pocket between the control mouth (20) of pilot valve and floss hole (12), this piston-type switch is by sealing the piston sleeve (22) be fixedly mounted in valve pocket and forming the piston column (13) coordinated with this piston sleeve (22) motive sealing, between piston column (13) lower end surface center hole and pilot valve lobe (11) back side center hole, push rod (21) is installed, pilot stem (14) lower end is inserted in the center hole of piston column (13) upper-end surface, piston sleeve (22) sidewall is shaped with and the through hole controlling mouth (20) and be communicated with floss hole (12) respectively, piston column (13) middle part periphery is shaped with annular groove, align with two through holes of piston sleeve (22) sidewall when pilot valve lobe (11) closed condition in the position of this annular groove.
3. momentum safety valve according to claim 1 and 2, it is characterized in that spring pressure setting device is arranged between pilot stem (14) and pilot valve lid (17), end winding support in pilot stem (14) upper end portion with handle (19) is connected, and the middle part of handle (19) is hinged with the support being fixedly mounted on pilot valve lid (17) upper-end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410464734.5A CN104235478B (en) | 2014-09-10 | 2014-09-10 | Momentum safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410464734.5A CN104235478B (en) | 2014-09-10 | 2014-09-10 | Momentum safety valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104235478A true CN104235478A (en) | 2014-12-24 |
| CN104235478B CN104235478B (en) | 2016-08-24 |
Family
ID=52224117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410464734.5A Active CN104235478B (en) | 2014-09-10 | 2014-09-10 | Momentum safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104235478B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106439041A (en) * | 2016-11-15 | 2017-02-22 | 盐城市汉铜智能铸造设备有限公司 | Flow adjustable high-low conversion valve for hydraulic oil |
| CN107763266A (en) * | 2016-08-18 | 2018-03-06 | 阿司米阀门有限公司 | A kind of low temperature resistant pilot operated safety valve of high temperature resistant |
| CN108679281A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | Pulse type 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 |
| JPH1163262A (en) * | 1997-08-27 | 1999-03-05 | Mitsubishi Heavy Ind Ltd | Steam safety valve |
| CN202646817U (en) * | 2012-07-04 | 2013-01-02 | 浙江恒华阀门有限公司 | High pressure impulse safety valve |
| CN203730856U (en) * | 2014-02-18 | 2014-07-23 | 永一阀门集团有限公司 | Vacuum-backflow preventive pilot safety valve |
| CN204083457U (en) * | 2014-09-10 | 2015-01-07 | 永一阀门集团有限公司 | Momentum safety valve |
-
2014
- 2014-09-10 CN CN201410464734.5A patent/CN104235478B/en active Active
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 |
| JPH1163262A (en) * | 1997-08-27 | 1999-03-05 | Mitsubishi Heavy Ind Ltd | Steam safety valve |
| CN202646817U (en) * | 2012-07-04 | 2013-01-02 | 浙江恒华阀门有限公司 | High pressure impulse safety valve |
| CN203730856U (en) * | 2014-02-18 | 2014-07-23 | 永一阀门集团有限公司 | Vacuum-backflow preventive pilot safety valve |
| CN204083457U (en) * | 2014-09-10 | 2015-01-07 | 永一阀门集团有限公司 | Momentum safety valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107763266A (en) * | 2016-08-18 | 2018-03-06 | 阿司米阀门有限公司 | A kind of low temperature resistant pilot operated safety valve of high temperature resistant |
| CN106439041A (en) * | 2016-11-15 | 2017-02-22 | 盐城市汉铜智能铸造设备有限公司 | Flow adjustable high-low conversion valve for hydraulic oil |
| CN108679281A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | Pulse type safety valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104235478B (en) | 2016-08-24 |
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| C14 | Grant of patent or utility model | ||
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