CN101975279A - Early warning stop valve - Google Patents
Early warning stop valve Download PDFInfo
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- CN101975279A CN101975279A CN 201010529481 CN201010529481A CN101975279A CN 101975279 A CN101975279 A CN 101975279A CN 201010529481 CN201010529481 CN 201010529481 CN 201010529481 A CN201010529481 A CN 201010529481A CN 101975279 A CN101975279 A CN 101975279A
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Abstract
The invention discloses an early warning stop valve. a framework ring sheathed on a valve rod is arranged above an inversed sealing device of a valve bonnet and is provided with a filler A and a filler B, which are sheathed on the valve rod, a filler gland is arranged above the filler B, a spacer bush is arranged between the filler A and the filler B, one middle section of the spacer bush along the length direction of the valve rod is recessed inwards and is provided with a radial through hole communicated with the radial through hole of the spacer bush, a medium leakage detection hole is arranged on a cavity wall of the valve bonnet, and a leakage detection probe is arranged on the medium leakage detection hole so as to trigger a warning facility. The stop valve provided in the invention is sealed in a multi-stage way so that the detection cycle and the service life of the stop valve are effectively prolonged; and under the situation that the first several sealing stages are invalid and internal medium leakage occurs, the last sealing stage is still effective, and an early warning signal can be generated before the medium is leaked to the outside of the valve.
Description
Technical field
The present invention relates to a kind of stop valve.
Background technique
Stop valve be by manual rotation hand wheel with the moving up and down of the valve rod that drives stop valve, perhaps moving up and down of the valve rod of motivational drive stop valve, and then drive the lifting of flap realizes that it opens and close.Existing stop valve mostly is a primary seal, perhaps is secondary seal, because the continuous switch of stop valve must cause between valve rod and the Sealing, cause wearing and tearing between the filler, produces the gap, very easily causes the medium by stop valve to leak outside.
People are also continuing for the improvement of stop valve, constantly improve the sealability of stop valve.For example: the flap in the valve body is connected one with valve rod now, and is set on the valve rod by sylphon seal, has realized the sealing of the first order, and the isolation of valve rod and medium has prolonged the working life of valve rod and stop valve.With the valve body make-up and place back seal device in the valve gap, can under the not out-of-work situation of stop valve, realize the replacing of filler.
But, in case above-mentioned seal failure, under the situation that stop valve is opened, medium will see through Sealing and packing leaking to the outside along valve rod, and pressure is high more, situation is serious more, many high-risk media are particularly arranged, for example: chlorine, liquid chlorine in the chemical industry, hydrogen fluoride gas, liquid gas and strong acid and strong base liquid, in case leak, consequence is hardly imaginable.
The sealing progression deficiency of present stop valve, structure is improper, causes the probability of dielectric leakage high, the repair rate height; When dielectric leakage, can not make timely warning, judge accurately to help people; When normal the use, people know nothing for the sealing state of stop valve, can't be intervened in advance, when it dielectric leakage occurs usually, also be the moment of stop valve afterbody seal failure, this on-call maintenance and replacing for stop valve has brought great trouble and danger.
Along with people's safety consciousness constantly improves, national government ensures that the resolution of people's safety of life and property is increasing.Prevent and be better than possible trouble, therefore, press for a kind of valve,, before particularly leaking appears in danger medium, can make promptly and accurately judgement and warning, will drop to minimum the loss of people's life and property to the medium of being flowed through in the valve.
Summary of the invention
The object of the present invention is to provide a kind of effectively multi-stage sealed scheme of sealing of stop valve that realizes, effectively prolong the repair cycle and the working life of stop valve; And can in preceding what seal failure, medium occurs under the situation of internal leakage, and the afterbody sealing is still effective, before medium can not leak into the valve outside, can produce early warning signal.
For achieving the above object, the technical solution used in the present invention is:
The early warning stop valve comprises valve body 1, place the valve body 1 inner flap 2 that cooperates with valve base sealing, the seal bellows 4 that is set in valve rod 3 and seals with valve rod 3, the valve gap 5 that is fixed together with valve body 1 make-up and place back seal device 12 in the valve gap 5, the valve rod 3 that runs through valve gap 5 and back seal device 12 and fixedly connected with flap 2, be installed in the handwheel 18 and the support thereof of valve rod 3 the other ends, it is characterized in that: the skeleton ring 6 that is set in valve rod 3 is set on the back seal device 12 of valve gap 5, filler A7 and the filler B11 that is set in valve rod 3 is set on skeleton ring 6, Gland 15 is set above filler B11, between filler A7 and filler B11, spacer 10 is set, spacer 10 is recessed inwards along one section of the centre of valve rod 3 length directions, and offer radial direction through hole 19, be connected with the radial direction through hole 19 of spacer 10, offer dielectric leakage exploration hole 13 at valve gap 5 chamber walls, and survey on 13 holes at dielectric leakage the probe 14 that leaks hunting is installed, to trigger warning facility.
Be connected with dielectric leakage exploration hole 13 recited above, on the valve cover cavity wall corresponding, offer a calibrated holes 9, calibrated holes plug 8 is installed on calibrated holes with radial direction through hole 19 the other ends.
Described a kind of probe that leaks hunting is the bellows pressure probe that leaks hunting, early warning bellows 14-3 is installed among the shell 14-5, the front end of early warning bellows 14-3 is connected with joint 14-2 by bellows gasket 14-1, joint 14-2 is connected with dielectric leakage exploration hole 13, the rear end of early warning bellows 14-3 connects motion bar 14-4, the explosion-proof ceramic partition 14-6 that motion bar 14-4 passes shell 14-5 bottom and is arranged in shell 14-5 bottom enters into the closed chamber 14-7 that is connected to form bottom sealing cover 14-9 and shell 14-5, the end that motion bar 14-4 is arranged in closed chamber 14-7 is provided with conducting plate 14-8, is provided with and the corresponding Alarm contactor 14-10 of conducting plate 14-8 on sealing cover 14-9.
Optionally, an end that is arranged in closed chamber 14-7 at the above motion bar 14-4 is provided with the iron plate of a magnetic conduction, be provided with on the sealing cover 14-9 one to the iron plate induction of magnetic conduction near switch, can realize contactless induction of signal.
Identical function and purpose realize that the described probe 14 that leaks hunting can be pressure switch or pressure transducer.The described signal that leaks hunting probe 14 transmits via wireless device, can carry out remote monitoring.
Further, described valve gap 5 and spacer 10 are I-shaped structure along the longitudinal profile of valve rod 3 length directions.
From the above mentioned, the present invention has embodied following technique effect:
Stop valve of the present invention, the valve rod working position all is in sealing state, seal between valve rod and the Sealing, be not subjected to the influence of medium, only wear first, second and third grade sealing at medium, be under the situation that occurs behind seal bellows, skeleton ring, the filler A leaking, prior-warning device just can send alarm signal, but fourth stage sealing is that filler B is also in proper functioning, this moment, valve did not externally produce leakage, do not cause any property loss and the prerequisite of personnel injury under, to trigger warning facility, reliably tell extraneous valve to safeguard and to change by the probe that leaks hunting realistically.Overcome at dielectric leakage outside with the stop valve of pre-structure, caused property and personnel in various degree loss and during injury, just found by the people, just go the defective that solves.And the multi-stage sealed technological scheme by seal bellows, skeleton ring, three layers of lower sealing device of filler A and filler B one deck upper sealing device, the repair cycle of valve be can prolong greatly, also can after prior-warning device is reported to the police, enough replacings, engineering time be left simultaneously.
Description of drawings
Accompanying drawing 1: the overall construction drawing of an embodiment of the present invention.
Accompanying drawing 2: the structural representation of a kind of probe that leaks hunting of the present invention.
Accompanying drawing 3: valve gap of the present invention is along the longitudinal sectional drawing of shaft length direction.
Accompanying drawing 4: the stereogram of valve gap of the present invention.Among the figure: 1, valve body, 2, flap, 3, valve rod, 4, seal bellows, 5, valve gap, 6, skeleton ring, 7, filler A, 8, the calibrated holes plug, 9, calibrated holes, 10, spacer, 11, filler B, 12, the back seal device, 13, medium leak detection hole, 14, the probe that leaks hunting, 14-1, bellows gasket, 14-2, joint, 14-3, the early warning bellows, 14-4, motion bar, 14-5, shell, 14-6, explosion-proof ceramic partition, 14-7, closed chamber, 14-8, conducting plate, 14-9, sealing cover, 14-10, Alarm contactor, 15, Gland, 16, supporting post, 17, the Stem Mut mounting plate, 18, handwheel, 19, radial direction through hole.
Specific embodiment
The invention will be further described below by accompanying drawing and preferred embodiment.
Referring to Fig. 1, on the valve body 1 of stop valve, offer medium import and outlet, the flap 2 of valve body 1 inside and valve rod 3 are fixedly connected and cooperate with the valve base sealing of valve body 1, realize the throttling for medium.The seal bellows 4 of valve body 1 inside and valve rod 3 sealing suits can prevent contacting of medium and valve rod 3, and it can be used for the occasion to valve rod 3 seal request strictnesses, can make valve rod 3 positions not have leakage, do not have fluid loss, reduce energy loss, improve safety of factory equipment; Can prolong the working life of valve rod 3 effectively, not only improve the use energy efficiency, the Security that increases manufacturing facilities reduces maintenance frequency, reduces operating cost.Seal bellows 4 stretches with the lifting of valve rod 3, and its Maximum operating pressure depends on the compressive strength and the fatigue strength of seal bellows 4.
Seal bellows 4 is the first order sealing of stop valve of the present invention.
Valve body 1 and valve gap 5 are fixed by bolt, are provided with back seal device 12 at the center of the bottom of valve gap 5.Under the state that stop valve is opened, by the seal action of back seal device 12, can be implemented in does not influence under the valve normal working its replacing with the filler on top.
Valve gap 5 in the embodiment of the invention is provided with the demand of sealed member in order to realize its inside, and it is the chamber shape structure of a hollow, and it is connected with valve body 1 down, goes up to be connected with supporting post 16.Because it will possess the function that connects valve body 1 and supporting post 16 up and down, be I-shaped structure along the longitudinal profile of valve rod 3 length directions.
In the chamber of valve gap 5, except the back seal device 12 that the bottom is provided with, also be provided with respectively of the present invention second and third, level Four sealing, i.e. skeleton ring 6, filler A7 and filler B11, and the spacer 10 between filler A7 and filler B11, valve rod 3 runs through described various piece respectively.
Skeleton ring 6 of the present invention is a novel sealing technique, referring to inventor's granted patent 200920313033.6.Its lips cartilage frame seal ring, its cross section roughly is down " V " shape, and its inboard is respectively equipped with inward flange up and down, and the relevant position of described valve gap is provided with corresponding annular groove, is used to hold lips cartilage frame seal ring.This novel regulating valve special for chlorine has simple in structure, good seal performance, closes little, the advantage of easy to leak not of torsion.
The skeleton ring 6 be set in valve rod 3 is set on the back seal device 12 of valve gap 5, filler A7 and the filler B11 that is set in valve rod 3 is set on skeleton ring 6, Gland 15 is set above filler B11, in order to sealing and fixing filler B11.Be provided with spacer 10 between filler A7 and filler B11, spacer 10 is recessed inwards along one section of the centre of valve rod 3 length directions.Referring to Fig. 3, Fig. 4, spacer 10 is an I-shaped structure along the longitudinal profile of valve rod 3 length directions, and offers radial direction through hole 19, and radial direction through hole 19 helps leaking medium and outwards overflows from valve rod 3.Be connected with the radial direction through hole 19 of spacer 10, offer dielectric leakage exploration hole 13, and on dielectric leakage exploration hole 13, the probe 14 that leaks hunting is installed, to trigger warning facility at valve gap 5 chamber walls.
The quantity of skeleton ring 6 can be used one, for more reliably, the quantity of skeleton ring 6 can adopt two or more.
The leakage of medium may appear in the stop valve multiple switching.Medium just can be come the spacer 10 between filler A7 and filler B11 after passing first, second and third sealing of stop valve.Medium passes spacer 10 from the gap of valve rod 3 radial direction through hole 19 flows to dielectric leakage exploration hole 13.
Referring to Fig. 2, the probe that leaks hunting of present embodiment bellows comprises that two ends are provided with the shell 14-5 of screw thread, early warning bellows 14-3 is installed among the shell 14-5, early warning bellows 14-3 front end is connected with joint 14-2 by bellows gasket 14-1, joint 14-2 is connected with dielectric leakage exploration hole 13, the rear end of early warning bellows 14-3 connects motion bar 14-4, the explosion-proof ceramic partition 14-6 that motion bar 14-4 passes shell 14-5 bottom and is arranged in shell 14-5 bottom enters into the closed chamber 14-7 that is connected to form bottom sealing cover 14-9 and shell 14-5, the end that motion bar 14-4 is arranged in closed chamber 14-7 is provided with conducting plate 14-8, is provided with and the corresponding Alarm contactor 14-10 of conducting plate 14-8 on sealing cover 14-9.
Very little or when not having pressure when pressure, according to the spring performance that bellows self is had, can be automatically in a state of nature, conducting plate 14-8 and Alarm contactor 14-10 are in separated state among the closed chamber 14-7, externally do not have alarm output signal.When leaking appears in first three level sealing, under the effect of pressure medium, promote early warning bellows 14-3, drive motion bar 14-4 to closed chamber 14-7 one side shifting.Along with the increase of pressure, conducting plate 14-8 is with after Alarm contactor 14-10 contacts, and can trigger itself and the outside warning piece that is connected, for example buzzer of sound alarm, loudspeaker, the beacon of light warning etc.At this moment, can transmit leakage signal out to external world, thereby reach the purpose of dielectric leakage early warning.
Another embodiment of the probe that leaks hunting of above-mentioned bellows is, conducting plate 14-8 is replaced by the iron plate of a magnetic conduction, sealing cover 14-9 central authorities be provided with one to the induction of the iron plate of magnetic conduction sensitive near switch, when early warning bellows 14-3 drives motion bar 14-4 to closed chamber 14-7 one side shifting, when reaching certain distance, will produce actuating signal near switch, its warning piece that is connected with the outside can reach the function of warning.Owing to iron plate and near switch is contactless, therefore more reliable.
As another kind of embodiment, the probe 14 that leaks hunting that dielectric leakage exploration hole 13 is installed also can be a pressure transducer, and pressure transducer can become the size conversion of pressure correspondent voltage signal or current signal, handles for level unit, back.
The probe 14 that leaks hunting that dielectric leakage exploration hole 13 is installed also can be a pressure switch, and when the pressure of leaking medium reached certain numerical value, the inner contact of pressure switch just can be connected, and the back grade of alarm unit that is connected with the contact will reach the purpose of warning.
For because of dielectric leakage by leak hunting the probe 14 signals of being surveyed, level unit, back can be provided with acoustic-optic alarm in the locality, also can carry out the monitoring control room of remote transmission, monitor and handle by central control room to probe 14 signals of being surveyed that leak hunting to center system.The teletransmission of probe 14 signals of being surveyed of leaking hunting can be adopted wire transmission, also can take wireless transmission, can at central control room radio receiver be set at stop valve place signalization wireless launcher, realizes wireless telecommunications.
Even pressure constantly increases, when puncturing bellows, because whole casing 14-5 still is in sealing state, medium can be toward external leakage, and stop valve can continue normal use.Can be not long but hold time, do not keep in repair for a long time yet and external leakage can occur.
During maintenance, rotation hand wheel 18 is closed back seal device 12, and the Gland 15 of dismounting filler B11 takes out filler B11 and spacer 10, fills up filler A7 again, and the parts of removal and installation in order compress Gland 12 again.
Further, be connected, on the valve gap corresponding 5 chamber walls, offer a calibrated holes 9, calibrated holes plug 8 is installed on calibrated holes 9 with radial direction through hole 19 the other ends of spacer 10 with described dielectric leakage exploration hole 13.When regularly or when needing after the maintenance probe 14 that leaks hunting detected, open a check and correction mouthful plug 8, whether the special-purpose verifying unit check probe 14 that leaks hunting is installed qualified.If defective, the probe 14 that then will leak hunting is changed, and adds sealer after qualified and shuts a check and correction mouthful plug 20 and get final product.
Conventional, supporting post 16 is set above valve gap 5, the top of supporting post 16 connects Stem Mut mounting plate 17, and handwheel 18 is installed on the Stem Mut mounting plate 17.Rotate handwheel 18 drive valve rods 3 and move up and down, thus the switch of control stop valve.
Claims (8)
1. early warning stop valve, comprise valve body, the flap that places valve inner to cooperate with valve base sealing, be set in valve rod and with the seal bellows of valve stem seal, the valve gap that is fixed together with the valve body make-up and place back seal device in the valve gap, the valve rod that runs through valve gap and back seal device and fixedly connected with flap, be installed in the handwheel and the support thereof of the valve rod the other end, it is characterized in that: the skeleton ring that is set in valve rod is set on the back seal device of valve gap, filler A and the filler B that is set in valve rod is set on skeleton ring, above filler B, Gland is set, between filler A and filler B, spacer is set, spacer is recessed inwards along one section of the centre of shaft length direction, and offer radial direction through hole, be connected with the radial direction through hole of spacer, offer the dielectric leakage exploration hole at the valve cover cavity wall, and the probe that leaks hunting is installed on the dielectric leakage exploration hole, to trigger warning facility.
2. early warning stop valve according to claim 1 is characterized in that: be connected with described dielectric leakage exploration hole, offer a calibrated holes on the valve cover cavity wall corresponding with the radial direction through hole the other end, the calibrated holes plug is installed on calibrated holes.
3. early warning stop valve according to claim 1, it is characterized in that: the described probe that leaks hunting is the bellows pressure probe that leaks hunting, the early warning bellows is installed in the shell, early warning bellows front end is connected with joint by bellows gasket, joint is connected with the dielectric leakage exploration hole, the rear end of early warning bellows connects motion bar, the explosion-proof ceramic partition that motion bar passes outer casing bottom and is arranged in outer casing bottom enters into the closed chamber that is connected to form by sealing cover and outer casing bottom, the end that motion bar is arranged in closed chamber is provided with conducting plate, is provided with and the corresponding Alarm contactor of conducting plate on sealing cover.
4. early warning stop valve according to claim 3 is characterized in that: the end that described motion bar is arranged in closed chamber is provided with the iron plate of a magnetic conduction, be provided with on the sealing cover one to the iron plate induction of magnetic conduction near switch.
5. early warning stop valve according to claim 1 is characterized in that: the described probe that leaks hunting is pressure switch or pressure transducer.
6. early warning stop valve according to claim 1 is characterized in that: the described signal that leaks hunting probe transmits via wireless device.
7. early warning stop valve according to claim 1 is characterized in that: described valve gap is an I-shaped structure along the longitudinal profile of shaft length direction.
8. early warning stop valve according to claim 1 is characterized in that: described spacer is an I-shaped structure along the longitudinal profile of shaft length direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105294817A CN101975279B (en) | 2010-11-03 | 2010-11-03 | Early warning stop valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105294817A CN101975279B (en) | 2010-11-03 | 2010-11-03 | Early warning stop valve |
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| CN101975279A true CN101975279A (en) | 2011-02-16 |
| CN101975279B CN101975279B (en) | 2012-07-25 |
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| CN2010105294817A Active CN101975279B (en) | 2010-11-03 | 2010-11-03 | Early warning stop valve |
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| CN102226484A (en) * | 2011-04-11 | 2011-10-26 | 江苏大学 | On-line monitoring device for seal leakage at valve stem of nuclear-grade valve |
| CN102748529A (en) * | 2012-06-14 | 2012-10-24 | 南通高中压阀门有限公司 | Valve rod packing loss display device |
| CN103697228A (en) * | 2013-12-18 | 2014-04-02 | 中国航天科技集团公司第六研究院第十一研究所 | Device capable of indicating packing compression status of valve stem |
| CN104832703A (en) * | 2015-05-04 | 2015-08-12 | 中国海洋石油总公司 | Two-way valve rod sealing structure of deep-sea high pressure valve and sealing anti-attrition test method |
| CN105156693A (en) * | 2015-10-08 | 2015-12-16 | 江苏神通阀门股份有限公司 | Nuclear safety needle valve |
| CN105443782A (en) * | 2015-12-25 | 2016-03-30 | 西安航天远征流体控制股份有限公司 | Corrugated tube stop valve |
| CN105526421A (en) * | 2016-03-01 | 2016-04-27 | 马鞍山市润启新材料科技有限公司 | Valve rod |
| CN106033022A (en) * | 2016-05-16 | 2016-10-19 | 华东理工大学 | Pipe valve and detection device for leakage of medium at filler position thereof |
| CN106704694A (en) * | 2017-02-08 | 2017-05-24 | 江苏神通阀门股份有限公司 | Maintenance-free stuffing box structure of valve |
| CN107035907A (en) * | 2017-06-09 | 2017-08-11 | 浙江万龙机械有限公司 | A kind of blast resistance construction of ammonia valve |
| CN107084271A (en) * | 2017-06-09 | 2017-08-22 | 浙江万龙机械有限公司 | A kind of ammonia leaks intelligence control valve |
| CN107091352A (en) * | 2017-06-09 | 2017-08-25 | 浙江万龙机械有限公司 | A kind of sensor interface structure of ammonia valve |
| CN107091353A (en) * | 2017-06-09 | 2017-08-25 | 浙江万龙机械有限公司 | A kind of bonnet of ammonia valve |
| CN108591498A (en) * | 2018-07-06 | 2018-09-28 | 安徽姆大陆科技发展有限公司 | A kind of automation bellows stop valve |
| CN109630751A (en) * | 2019-01-27 | 2019-04-16 | 哈电集团哈尔滨电站阀门有限公司 | A kind of intelligent type valve |
| CN110030390A (en) * | 2019-03-05 | 2019-07-19 | 南通市力沛流体阀业有限公司 | A kind of thermal power generation safety type power valve and application method |
| CN112128465A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide regulating valve rod sealing structure |
| WO2021143495A1 (en) * | 2020-01-17 | 2021-07-22 | 苏州纽威阀门股份有限公司 | Corrugated pipe stop valve |
| CN114060604A (en) * | 2021-12-08 | 2022-02-18 | 中国矿业大学 | Leakage detection device and detection method of single-breath valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4972867A (en) * | 1989-11-03 | 1990-11-27 | Ruesch J O | Valve stem seal leak protection and detection apparatus |
| CN2206953Y (en) * | 1994-07-13 | 1995-09-06 | 天津市红桥区东英机械加工厂 | Fluid pressure sensor |
| CN2441001Y (en) * | 2000-09-20 | 2001-08-01 | 莫双 | Valve leakageproofing device |
| CN201137751Y (en) * | 2008-01-14 | 2008-10-22 | 西安核设备有限公司革新阀门厂 | Corrugated pipe sodium stop valve |
| CN201531619U (en) * | 2009-10-22 | 2010-07-21 | 淄博汇华阀业有限公司 | Novel special adjusting valve for chlorine gas |
| CN202132594U (en) * | 2010-11-03 | 2012-02-01 | 淄博汇华阀业有限公司 | Prewarning stop valve |
-
2010
- 2010-11-03 CN CN2010105294817A patent/CN101975279B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4972867A (en) * | 1989-11-03 | 1990-11-27 | Ruesch J O | Valve stem seal leak protection and detection apparatus |
| CN2206953Y (en) * | 1994-07-13 | 1995-09-06 | 天津市红桥区东英机械加工厂 | Fluid pressure sensor |
| CN2441001Y (en) * | 2000-09-20 | 2001-08-01 | 莫双 | Valve leakageproofing device |
| CN201137751Y (en) * | 2008-01-14 | 2008-10-22 | 西安核设备有限公司革新阀门厂 | Corrugated pipe sodium stop valve |
| CN201531619U (en) * | 2009-10-22 | 2010-07-21 | 淄博汇华阀业有限公司 | Novel special adjusting valve for chlorine gas |
| CN202132594U (en) * | 2010-11-03 | 2012-02-01 | 淄博汇华阀业有限公司 | Prewarning stop valve |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102226484A (en) * | 2011-04-11 | 2011-10-26 | 江苏大学 | On-line monitoring device for seal leakage at valve stem of nuclear-grade valve |
| CN102748529A (en) * | 2012-06-14 | 2012-10-24 | 南通高中压阀门有限公司 | Valve rod packing loss display device |
| CN102748529B (en) * | 2012-06-14 | 2015-01-07 | 南通高中压阀门有限公司 | Valve rod packing loss display device |
| CN103697228A (en) * | 2013-12-18 | 2014-04-02 | 中国航天科技集团公司第六研究院第十一研究所 | Device capable of indicating packing compression status of valve stem |
| CN103697228B (en) * | 2013-12-18 | 2015-10-21 | 中国航天科技集团公司第六研究院第十一研究所 | A kind of device with instruction stem packing impaction state |
| CN104832703A (en) * | 2015-05-04 | 2015-08-12 | 中国海洋石油总公司 | Two-way valve rod sealing structure of deep-sea high pressure valve and sealing anti-attrition test method |
| CN105156693A (en) * | 2015-10-08 | 2015-12-16 | 江苏神通阀门股份有限公司 | Nuclear safety needle valve |
| CN105443782A (en) * | 2015-12-25 | 2016-03-30 | 西安航天远征流体控制股份有限公司 | Corrugated tube stop valve |
| CN105526421A (en) * | 2016-03-01 | 2016-04-27 | 马鞍山市润启新材料科技有限公司 | Valve rod |
| CN106033022A (en) * | 2016-05-16 | 2016-10-19 | 华东理工大学 | Pipe valve and detection device for leakage of medium at filler position thereof |
| CN106704694A (en) * | 2017-02-08 | 2017-05-24 | 江苏神通阀门股份有限公司 | Maintenance-free stuffing box structure of valve |
| CN107035907A (en) * | 2017-06-09 | 2017-08-11 | 浙江万龙机械有限公司 | A kind of blast resistance construction of ammonia valve |
| CN107084271A (en) * | 2017-06-09 | 2017-08-22 | 浙江万龙机械有限公司 | A kind of ammonia leaks intelligence control valve |
| CN107091352A (en) * | 2017-06-09 | 2017-08-25 | 浙江万龙机械有限公司 | A kind of sensor interface structure of ammonia valve |
| CN107091353A (en) * | 2017-06-09 | 2017-08-25 | 浙江万龙机械有限公司 | A kind of bonnet of ammonia valve |
| CN108591498A (en) * | 2018-07-06 | 2018-09-28 | 安徽姆大陆科技发展有限公司 | A kind of automation bellows stop valve |
| CN109630751A (en) * | 2019-01-27 | 2019-04-16 | 哈电集团哈尔滨电站阀门有限公司 | A kind of intelligent type valve |
| CN110030390A (en) * | 2019-03-05 | 2019-07-19 | 南通市力沛流体阀业有限公司 | A kind of thermal power generation safety type power valve and application method |
| WO2021143495A1 (en) * | 2020-01-17 | 2021-07-22 | 苏州纽威阀门股份有限公司 | Corrugated pipe stop valve |
| CN112128465A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide regulating valve rod sealing structure |
| CN114060604A (en) * | 2021-12-08 | 2022-02-18 | 中国矿业大学 | Leakage detection device and detection method of single-breath valve |
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| CN101975279B (en) | 2012-07-25 |
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Application publication date: 20110216 Assignee: TIANJIN HUIHUA VALVE INDUSTRY Co.,Ltd. Assignor: SHANDONG FURUI INDUSTRY AND TRADE Co.,Ltd. Contract record no.: X2021980010596 Denomination of invention: Early warning stop valve Granted publication date: 20120725 License type: Common License Record date: 20211012 |
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