CN106286917B - Safety valve - Google Patents

Safety valve Download PDF

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Publication number
CN106286917B
CN106286917B CN201610837142.2A CN201610837142A CN106286917B CN 106286917 B CN106286917 B CN 106286917B CN 201610837142 A CN201610837142 A CN 201610837142A CN 106286917 B CN106286917 B CN 106286917B
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CN
China
Prior art keywords
valve
water channel
hole
sealing
actuator
Prior art date
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CN201610837142.2A
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Chinese (zh)
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CN106286917A (en
Inventor
金哲龙
姚文龙
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JIANGSU LONGLISHEN FINE TECHNOLOGY Co Ltd
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JIANGSU LONGLISHEN FINE TECHNOLOGY Co Ltd
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Priority to CN201610837142.2A priority Critical patent/CN106286917B/en
Publication of CN106286917A publication Critical patent/CN106286917A/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/0413Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of closure plates
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/04Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
    • F16K17/048Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K37/00Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K43/00Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose
    • F16K43/001Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose an auxiliary valve being actuated independently of the main valve

Abstract

The invention discloses a kind of safety valves, comprising: the components such as valve body, piston, water channel converter, actuator, pressure sensor.Relative to conventional security valve, the safety valve used unit is opposite to be reduced, and the structure of water channel converter is especially optimized, more simple in structure.Simultaneously, it is only necessary to which the first water channel is truncated in rotation maintenance screw, safety valve can be kept to be in close state always, convenient in the case where not removing safety valve, repairing to the component of safety valve and inspection.After optimization, part important component is placed on dismountable valve deck, the component in valve chamber can be repaired by related component inspection, and after removing valve deck by removing valve deck, more convenient.

Description

Safety valve
Technical field
The present invention relates to valve technology fields, more particularly, to a kind of safety valve.
Background technique
Safety valve is one kind of safeguard protection valve, is remained closed under normal pressure state, the liquid in equipment or pipeline (certainly also can the be gas medium) pressure rise of body medium and be more than specified value when automatically turn on, ensure system to carry out pressure release Safety.So safety valve is mainly used for boiler, on pressure vessels and pipes, control pressure is no more than specified value, to personal safety Important protective effect has been run with equipment.
Currently, it is spring pound level security valve that the country is most commonly used.It is controlled and is opened by spring inside this safety valve.By In the long-term stress of spring and elastic force often changes, even if the producer selects optimal spring materials, the most perfect spring of use is raw The service life of production. art, spring is also limited, and elastic force can change over time.To not only high failure rate, and body Product is huge, needs annual annual test.
For this purpose, the present inventor has developed a kind of deadweight safety valve, comprising: valve body, the valve body include valve chamber, which has By connector shut off face connection inlet and outlet, meanwhile, the valve body be equipped with one end be connected to the first of the water inlet Water channel, one end are connected to the second water channel of the water outlet, one end is connected to the third water channel of the valve chamber;Piston, the piston can go up bottom Move and sealing cooperation be located at the valve chamber in, between the piston and the bottom of the valve chamber be equipped with pressure spring, under normal conditions, the pressure spring to On push piston and remain turned-off valve under normal conditions, meanwhile, which is equipped with the sealing element being located in the water inlet, and The sealing element and the connector shut off face matching;Triple-valve cap, the triple-valve cap include the threeway valve chamber of lower openings, the threeway It is sealed with fixed switch piece at valve chamber open, is equipped with up and down at the axle center of the fixed switch piece on the fixed switch piece Middle through-hole and the middle through-hole the left through-hole being respectively arranged on the left side and the right side up and down, right through-hole, wherein the left side is logical Hole, middle through-hole, right through-hole lower part be respectively communicated with the other end of the third, the first, second water channel;It is intracavitary positioned at the triple valve The upper surface of the rotary switch member in portion, the rotary switch member lower surface and the fixed switch piece seals cooperation, meanwhile, which opens Close part left part be equipped with left connection hole up and down, be equipped with middle part intercommunicating pore at axle center, right part lower surface is greater than equipped with radian The arc groove of 180o, and the middle part intercommunicating pore is connected to the middle through-hole;The actuator actuator should by the connection of threeway valve rod Rotary switch member;It is connected to the pressure gauge of the threeway valve chamber;Wherein, when the pressure of the pressure gauge reaches the safe pressure of setting Afterwards, pressure gauge controls actuator movement;And after the actuator drives the rotary switch member to rotate, the left connection hole and the left side Through-hole connection, when the actuator drives the rotary switch member opposite direction to rotate, which is connected to the left through-hole and the right side is logical Hole.That is, connector face of shutting off is opened or closed after sealing element upper and lower displacement, and the displacement of the sealing element mainly passes through Liquid medium acts the pressure change that the piston is formed, and avoids and pushes the sealing element to the connector using spring merely The implementation in face of shutting off opens or closes, to occur failing because of the long-term stress of spring or the case where elastic force changes, in turn Failure rate is lower, without frequently check and correction.Meanwhile the deadweight safety valve beating by the action control of the actuator deadweight safety valve On or off is closed, without using huge rotating handle, so that the deadweight safety valve be made to have the condition for being prepared as smaller size smaller.
The present invention is the further improvement to aforementioned hydraulic safety valve, to its in terms of maintenance it is more convenient, and make it Structure is simpler.
Summary of the invention
The object of the present invention is to provide a kind of safety valves, it has structure simple, and maintenance and inspection are more square
Just the characteristics of.
The technical scheme adopted by the invention is that: safety valve, comprising:
Valve body, the valve body include valve chamber, the valve chamber have by connector shut off face be connected to inlet and outlet, together When, the valve body is equipped with one end is connected to the first water channel of the water inlet, one end is connected to the second water channel of the water outlet, one end connection The third water channel of the valve chamber;
Piston, the piston can upper and lower displacement and sealing cooperation be located in the valve chamber, the bottom of the piston and the valve chamber it Between be equipped with pressure spring, meanwhile, which is equipped with the sealing element being located in the water inlet, and the sealing element and the connector shut off Face matches;
Water channel converter;
Actuator, the actuator and the water channel converter match;
Pressure sensor, which incudes the hydraulic pressure in first water channel, and the pressure sensor is compatible with this Actuator;
It is provided with a sealing screw hole on the valve body, a sealed screw is bolted in the sealing screw hole, meanwhile, first water channel It include the vertical part and the horizontal part to link together, which is located on the extension line of the vertical portion, and the sealing spiral shell The inner end in hole is connected to first water channel, and, the upper end of the vertical portion is equipped with internal screw thread, and the internal screw thread is equipped with a maintenance spiral shell Silk.
The maintenance screw upper surface is equipped with tool deep gouge.
The valve body top is detachably and fixedly provided with valve deck, the upper opening of the valve bonnet seal valve chamber.
The bonnet lower is equipped with accommodating chamber, which is located in the accommodating chamber, meanwhile, the actuator, pressure Sensor is respectively positioned on the valve deck.
The water channel converter includes: the fixing piece being fixed in the accommodating chamber, the upper surface of lower surface and the fixing piece The revolving part of the conflict of sealing together, wherein the fixing piece is equipped with lower pressurized hole and link slot, the lower part of the lower pressurized hole It is connected to that first water channel, the link slot are arc-shaped, and the lower pressurized hole is located on the circle where the link slot, the circle of the link slot The heart is located in the rotary shaft of the revolving part, which is equipped with relief hole and upper pressurized hole, and the top connection of the relief hole should Second water channel, top of pressurized hole is connected to the third water channel on this, and the lower end of the relief hole and pressurized hole on this can connect simultaneously Lead to the link slot, and on this pressurized hole lower end to the just lower pressurized hole when, the relief hole is close by the upper surface of the fixing piece It closes, meanwhile, which is connected with one in vertical valve rod, and the lower end of the valve rod connects the revolving part.
A connecting rod upwardly extended is fixed in the middle part of the sealing element, which is fixed on the connecting rod by a nut Upper end.
Safety valve of the invention is advantageously:
1, structure is simple, and maintenance and inspection are more convenient.Used unit is opposite to be reduced, and water channel is especially optimized The structure of converter is more simple in structure.Simultaneously, it is only necessary to which the first water channel is truncated in rotation maintenance screw, can keep pacifying Full valve is in close state always, convenient in the case where not removing safety valve, repairing to the component of safety valve and inspection. After optimization, part important component is placed on dismountable valve deck, removing valve deck can be by related component inspection, and removes valve The component in valve chamber can be repaired after lid, it is more convenient.
2, operational safety is stablized.Using pressure sensor come the unlatching of control valve rather than traditional mechanical system is opened Open, thus safety is higher, stability more preferably.
3, vibration is preferably prevented.It meets safety valve and opens the fast and timely most important condition.Regardless of safety valve bore is big Small switch dynamics can not be greater than 3N, and the opening time is not 1-2 seconds super.When unlatching, the power that piston overpowers hydraulic pressure withstands flap pushes away down, To which opening speed is uniform, when water outlet, is shockproof, and when closing adjusts pressure release aperture, adjusts the shut-in time, effectively prevents closing Seismism.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples:
Fig. 1 is the front sectional view of the safety valve of the embodiment of the present invention;
Fig. 2 is front sectional view of the section components at another visual angle of the safety valve of the embodiment of the present invention;
Fig. 3 is the top view of fixing piece of the invention;
Fig. 4 is the bottom view of revolving part of the invention;
Fig. 5 to Fig. 8 is the exploded view of safety valve of the invention in different disassembly status.
In figure:
10, valve body, 11, valve chamber, 111, third water channel, 12, connector shut off face, 13, water inlet, the 131, first water channel, 1311, vertical portion, 13111, internal screw thread, 1312, horizontal part, 14, water outlet, the 141, second water channel, 15, sealing screw hole;
20, piston, 21, sealing element, 22, pressure spring, 23, connecting rod, 24, nut;
30, water channel converter, 31, fixing piece, 311, lower pressurized hole, 312, link slot, 32, revolving part, 321, relief hole, 322, upper pressurized hole;
40, actuator, 41, valve rod;
50, pressure sensor;
61, sealed screw, 62, maintenance screw, 621, tool deep gouge;
70, valve deck, 71, accommodating chamber.
Specific embodiment
Embodiment is seen figure 1 and figure 2: safety valve, comprising: valve body 10, piston 20, water channel converter 30, actuator 40, the components such as pressure sensor 50.
Concretely:
The valve body 10 include valve chamber 11, the valve chamber 11 have by connector shut off face 12 connection water inlet 13 and be discharged Mouth 14.Formed when that is, the connector shuts off, face 12 is opened or closed the water inlet 13 and the water outlet 14 be connected to or truncation.Also That is, forming opening or closing for the safety valve.Meanwhile the valve body 10 is equipped with the first water channel that one end is connected to the water inlet 13 131, one end is connected to the second water channel 141 of the water outlet 14, one end is connected to the third water channel 111 of the valve chamber 11.For example, this first Water channel 131, the second water channel 141, third water channel 111 are respectively positioned on the side wall of the valve body 10.
The piston 20 can upper and lower displacement and sealing cooperation be located at the valve chamber 11 in.That is, the piston 20 can upper and lower displacement, and What two parts that the valve chamber 11 is located at about 20 piston sealed against each other separates.For example, the side of the piston 20 is equipped with sealing Circle.Moreover, being equipped with pressure spring 22 between the piston 20 and the bottom of the valve chamber 11, which avoids transport, in installation process Or system, when bringing into operation, which in turn results in leakage or closes not tight phenomenon because the weight of itself is toward moving down.This place The bottom of the valve chamber 11 of meaning refers to the opening that the valve chamber 11 is connected to the water outlet 14.Meanwhile 20 lower end of piston is equipped with Sealing element 21 in the water inlet 13, the sealing element 21 and the connector shut off face 12 matching.That is, the sealing element 21 moves up After close the connector and shut off face 12;Shut off face 12 conversely, the sealing element 21 opens the connector after moving down.
The actuator 40 and the water channel converter 30 match.That is, driving the water channel converter 30 after the actuator 40 work Movement, is connected to second water channel 141 with first water channel 131, or make the third water channel 111 and first water channel 131 connections, or it is connected to first water channel not with second water channel 141, third water channel 111.
The pressure sensor 50 incudes the hydraulic pressure in first water channel 131, and the pressure sensor 50 is compatible with the execution Device 40.That is, can control the actuator 40 to work after the pressure sensor 50 experiences hydraulic pressure more than setting value.
Further say:
In conjunction with shown in Fig. 5 and Fig. 6, a sealing screw hole 15 is provided on the valve body 10, it is close to be bolted with one in the sealing screw hole 15 Seal screw 61.Meanwhile first water channel 131 includes the vertical portion 1311 to link together and horizontal part 1312.That is, this first Water channel 131 is turned round in the engaging portion of the vertical portion 1311 and the horizontal part 1312.It is vertical that the sealing screw hole 15 is located at this On the extension line in portion 1311, and the inner end of the sealing screw hole 15 is connected to first water channel 131.And the vertical portion 1311 is upper End is equipped with internal screw thread 13111, and the internal screw thread 13111 is equipped with a maintenance screw 62.That is, usually in use, can be by the dimension It repairs screw 62 to unscrew, and keeps screwing for the sealed screw 61, then keep the unimpeded of first water channel 131;Conversely, when needing Maintenance and when inspection, it is only necessary to the sealed screw 61 is removed, and screws the maintenance screw 62 through the sealing screw hole 15, it can will First water channel 131 truncation, in order to repair, maintain and inspection.
Obviously, for the ease of the turn maintenance screw 62, which is equipped with tool deep gouge 621.Than Such as, which is 1-shaped open, cross mouth or interior hex slot.
Optimization:
As shown in connection with fig. 7, which is detachably and fixedly provided with valve deck 70, which seals the upper of the valve chamber 11 Portion's opening.For example, the valve deck 70 is fixed on the valve body 10 by screw, and the downside of the valve deck 70 acts as the valve chamber 11 upper side wall.In this way, removing the valve deck 70, the component in the valve chamber 11 can be enable exposed, in order to repair.
More preferably:
70 lower part of valve deck is equipped with accommodating chamber 71.Obviously, which is closed state.The water channel converter 30 is located at In the accommodating chamber 71.Meanwhile the actuator 40, pressure sensor 50 are respectively positioned on the valve deck 70.That is, removing the valve deck 70 The important components such as aforementioned actuator 40, pressure sensor 50, water channel converter 30 are removed, in order to individually remove above-mentioned parts Carry out inspection.
The water channel converter 30 can use common structure.In the present embodiment, in conjunction with shown in Fig. 3 and Fig. 4, which turns Parallel operation 30 includes: the fixing piece 31 being fixed in the accommodating chamber 71, the conflict of the upper surface sealing of lower surface and the fixing piece 31 Revolving part 32 together.Preferable mode is, the fixing piece 31 and the revolving part 32 are the standby circle of ceramic system, and the two Coaxially.Wherein, which is equipped with lower pressurized hole 311 and link slot 312, the lower part of the lower pressurized hole 311 be connected to this One water channel 131;The link slot 312 is arc-shaped and its upper and lower surface that can not necessarily penetrate through the fixing piece 31, the lower pressurized hole 311 On the circle where the link slot 312, the center of circle of the link slot 312 is located in the rotary shaft of the revolving part 32;The revolving part 32 are equipped with relief hole 321 and upper pressurized hole 322, and the top of the relief hole 321 is connected to second water channel 141, pressurized hole on this 322 top is connected to the third water channel 111.The relief hole 321 can be connected to the connection with the lower end of pressurized hole 322 on this simultaneously Slot 312.Also that is, the lower end of the relief hole 321 can be connected to the link slot 312 simultaneously with the lower end of pressurized hole 322 on this, from And it forms the relief hole 321 and is connected to pressurized hole 322 on this.Lower end of pressurized hole 322 is to the just lower pressurized hole 311 on this When, the relief hole 321 is closed by the upper surface of the fixing piece 31.That is, first water channel may be implemented after the revolving part 32 rotation 131 are connected to the third water channel 111, so that the water inlet 13 is connected to the water outlet 14;Also first water can be realized Road 131 is closed, and second water channel 141 is connected to the third water channel 111, so that the water outlet 14 is connected to the valve chamber 11.Such as This realizes that the piston 20 moves up and down, drives moving up and down for the sealing element 21 by the opposite variation of pressure.Meanwhile this is held Row device 40 is connected with one in vertical valve rod 41, and the lower end of the valve rod 41 connects the revolving part 32.That is, the actuator 40 is by being somebody's turn to do Valve rod 41 drives the revolving part 32 rotation.In this way, keeping the structure of the water channel converter 30 simpler, reasonable.
Continue to optimize:
As shown in connection with fig. 8, the middle part of the sealing element 21 is fixed with a connecting rod 23 upwardly extended, which passes through a spiral shell Mother 24 is fixed on the upper end of the connecting rod 23.That is, keep the sealing element 21 close the connector shut off face 12 under the premise of, the work Plug 20 and the equal components of pressure spring 22 can also be removed, in order to the operation such as repair.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all utilizations Equivalent structure or equivalent flow shift made by description of the invention and accompanying drawing content is applied directly or indirectly in other correlations Technical field, be included within the scope of the present invention.

Claims (2)

1. safety valve, comprising:
Valve body (10), the valve body (10) include valve chamber (11), the valve chamber (11) have by connector shut off face (12) be connected to Water inlet (13) and water outlet (14), meanwhile, which is equipped with the first water channel that one end is connected to the water inlet (13) (131), one end is connected to the second water channel (141) of the water outlet (14), one end is connected to the third water channel (111) of the valve chamber (11);
Piston (20), the piston (20) can upper and lower displacement and sealing cooperation be located at the valve chamber (11) in, the piston (20) and be somebody's turn to do Pressure spring (22) are equipped between the bottom of valve chamber (11), meanwhile, which is equipped with close in the water inlet (13) Sealing (21), and the sealing element (21) and the connector shut off face (12) matching;
Water channel converter (30);
Actuator (40), the actuator (40) and the water channel converter (30) match;
Pressure sensor (50), the pressure sensor (50) incude the hydraulic pressure in first water channel (131), and the pressure sensor (50) it is compatible with the actuator (40);
It is characterized by: being provided with a sealing screw hole (15) on the valve body (10), a sealing is bolted in the sealing screw hole (15) Screw (61), meanwhile, which includes the vertical portion (1311) to link together and horizontal part (1312), is somebody's turn to do Sealing screw hole (15) is located on the extension line of the vertical portion (1311), and the inner end of the sealing screw hole (15) is connected to first water channel (131), and, the upper end of the vertical portion (1311) is equipped with internal screw thread (13111), and the internal screw thread (13111) is equipped with a maintenance Screw (62);
Valve body (10) top is detachably and fixedly provided with valve deck (70), and the top which seals the valve chamber (11) is opened Mouthful;
Valve deck (70) lower part is equipped with accommodating chamber (71), which is located in the accommodating chamber (71), meanwhile, it should Actuator (40), pressure sensor (50) are respectively positioned on the valve deck (70);
The water channel converter (30) includes: the fixing piece (31) being fixed in the accommodating chamber (71), lower surface and the fixing piece (31) revolving part (32) of upper surface sealing contradicted together, wherein the fixing piece (31) is equipped with lower pressurized hole (311) With link slot (312), it is arc-shaped that the lower part of the lower pressurized hole (311) is connected to first water channel (131), the link slot (312), and The lower pressurized hole (311) is located on the circle where the link slot (312), and the center of circle of the link slot (312) is located at the revolving part (32) in rotary shaft, the revolving part (32) be equipped with relief hole (321) and upper pressurized hole (322), the relief hole (321) it is upper Portion is connected to that second water channel (141), top of pressurized hole (322) is connected to the third water channel (111) on this, the relief hole (321) The link slot (312) can be connected to simultaneously with the lower end of pressurized hole on this (322), and on this pressurized hole (322) lower end pair Just lower pressurized hole (311) when, the relief hole (321) is closed by the upper surface of the fixing piece (31), meanwhile, the actuator (40) One is connected in vertical valve rod (41), the lower end of the valve rod (41) connects the revolving part (32);
A connecting rod (23) upwardly extended is fixed in the middle part of the sealing element (21), the piston (20) is solid by a nut (24) Due to the upper end of the connecting rod (23).
2. safety valve according to claim 1, it is characterised in that: the maintenance screw (62) upper surface is heavy equipped with tool Slot (621).
CN201610837142.2A 2016-09-21 2016-09-21 Safety valve Active CN106286917B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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CN106286917A CN106286917A (en) 2017-01-04
CN106286917B true CN106286917B (en) 2019-03-19

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108386583A (en) * 2018-03-09 2018-08-10 佛山市骏渔信息科技有限公司 A kind of relief valve applied widely

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Publication number Priority date Publication date Assignee Title
US3854494A (en) * 1974-02-04 1974-12-17 Crosby Valve & Gage Safety valve
CN88200110U (en) * 1988-01-15 1988-10-19 航天工业部第十一研究所 Pilot bellows type relief valve
CN2844598Y (en) * 2005-09-20 2006-12-06 上海日泰阀门制造有限公司 Direct-operated regulator
CN2929368Y (en) * 2006-06-23 2007-08-01 金哲龙 Valve
CN102128273A (en) * 2010-01-18 2011-07-20 江苏龙力神精工科技有限公司 Fire hydrant rapid valve
CN202048040U (en) * 2011-04-29 2011-11-23 佛山市顺德区震德塑料机械有限公司 Novel hydraulic safety valve
CN202209455U (en) * 2011-09-23 2012-05-02 福建福思特阀门集团有限公司 Safe power-driven pressure releasing and holding valve
CN202510785U (en) * 2012-03-29 2012-10-31 天正阀门有限公司 High-temperature high-pressure pneumatic control automatic pressure release valve
CN203413197U (en) * 2013-08-16 2014-01-29 湖北泰和石化设备有限公司 Self-reliance pilot-operated type flow control valve

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3854494A (en) * 1974-02-04 1974-12-17 Crosby Valve & Gage Safety valve
CN88200110U (en) * 1988-01-15 1988-10-19 航天工业部第十一研究所 Pilot bellows type relief valve
CN2844598Y (en) * 2005-09-20 2006-12-06 上海日泰阀门制造有限公司 Direct-operated regulator
CN2929368Y (en) * 2006-06-23 2007-08-01 金哲龙 Valve
CN102128273A (en) * 2010-01-18 2011-07-20 江苏龙力神精工科技有限公司 Fire hydrant rapid valve
CN202048040U (en) * 2011-04-29 2011-11-23 佛山市顺德区震德塑料机械有限公司 Novel hydraulic safety valve
CN202209455U (en) * 2011-09-23 2012-05-02 福建福思特阀门集团有限公司 Safe power-driven pressure releasing and holding valve
CN202510785U (en) * 2012-03-29 2012-10-31 天正阀门有限公司 High-temperature high-pressure pneumatic control automatic pressure release valve
CN203413197U (en) * 2013-08-16 2014-01-29 湖北泰和石化设备有限公司 Self-reliance pilot-operated type flow control valve

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