CN113864666B - Quick cut-off stop valve - Google Patents
Quick cut-off stop valve Download PDFInfo
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- CN113864666B CN113864666B CN202111207265.5A CN202111207265A CN113864666B CN 113864666 B CN113864666 B CN 113864666B CN 202111207265 A CN202111207265 A CN 202111207265A CN 113864666 B CN113864666 B CN 113864666B
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- valve
- air passage
- hydrogen
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- air
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- 238000007789 sealing Methods 0.000 claims abstract description 14
- 239000001257 hydrogen Substances 0.000 claims description 63
- 229910052739 hydrogen Inorganic materials 0.000 claims description 63
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 60
- 238000012856 packing Methods 0.000 claims description 37
- 230000009471 action Effects 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 16
- 238000009423 ventilation Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 10
- 150000002431 hydrogen Chemical class 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims 2
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000004913 activation Effects 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/02—Preventing, monitoring, or locating loss
- F17D5/06—Preventing, monitoring, or locating loss using electric or acoustic means
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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
- F16K17/20—Excess-flow valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Lift Valve (AREA)
Abstract
The application relates to a quick-cut shut-off valve, comprising: the valve seat, first air vent has been seted up at the middle part of valve seat, intake duct and the air outlet channel of first air vent of intercommunication have been seted up respectively to the both sides of valve seat, fix the valve casing subassembly at valve seat top, the second air vent has been seted up to the inside of valve casing subassembly, the inside gliding removal valve subassembly of second air vent, remove the valve subassembly and including setting up the elastomeric element at the top, the near cover in middle part of removal valve subassembly is equipped with sealing element, connects first start-up pipeline between valve seat and the valve casing subassembly. The quick cut-off stop valve disclosed by the application has the advantages that the integral valve body is compact in structure, the valve body device is simple to open and close, and the maintenance is facilitated.
Description
Technical Field
The application relates to a quick cut-off stop valve.
Background
The hydrogen produced by the hydrogen production equipment is stored in a hydrogen storage tank, and a control valve is arranged on a pipeline behind the hydrogen storage tank. The control valve has the advantages that the pipeline to the hydrogen user is damaged by collision or unreliability, the pressure in the pipeline is rapidly reduced, the rapid stop valve is rapidly closed, the hydrogen storage tank is cut off to supply hydrogen, and the hydrogen is prevented from being continuously leaked to cause larger harm.
In particular, flammable and explosive media are increasingly transported through pipelines, but the potential safety hazards of the transportation of the flammable and explosive media through pipelines are also increasingly prominent. The pipeline is broken by failure or is damaged by external force, so that inflammable and explosive medium leaks, and accidents occur. How to effectively reduce or reduce the accident caused by the leakage of inflammable and explosive media, the control valve needs to be rapidly cut off to be assembled on a pipeline for use.
Disclosure of Invention
The application provides a quick cut-off stop valve, which aims at solving at least one of the technical problems existing in the prior art.
The technical scheme of the application is a quick cut-off stop valve, which comprises: the valve seat, first air vent has been seted up at the middle part of valve seat, intake duct and the air outlet channel of intercommunication first air vent have been seted up respectively to the both sides of valve seat, fix the valve casing subassembly at valve seat top, the inside second air vent has been seted up of valve casing subassembly, the inside gliding movable valve subassembly of second air vent, movable valve subassembly is including setting up the elastomeric element at the top, the near cover in middle part of movable valve subassembly is equipped with sealing member, connects first start-up pipeline between valve seat and the valve casing subassembly, install first control valve on the first start-up pipeline, connect second start-up pipeline between valve seat and the valve casing subassembly, install the second control valve on the second start-up pipeline, wherein, the bottom of movable valve subassembly with first air vent cooperation is opened and is linked together or is closed first air vent and second air vent, wherein, the both ends of first start-up pipeline communicate second air vent and air outlet channel respectively, wherein, elastomeric element's top with the inside of second air vent and the inside of air vent are supported to the top wall and the contact each other, wherein the inside wall of valve casing supports each other.
Further, the valve casing subassembly includes from the top down fixed connection's first valve casing and second valve casing in proper order, the inside space of first valve casing and second valve casing constitutes the second vent way, the valve core seat, case chain rod mechanism and the movable valve piece that the movable valve subassembly connects gradually from the bottom to the top, the top of movable valve piece is equipped with the spring dead lever, the middle part periphery of movable valve piece is equipped with the spring mounting groove, elastomeric element is the spring, wherein, the spring with spring mounting groove adaptation installation, the spring with the inside wall of second vent way mutually supports and holds the contact, and wherein, the one end of spring with spring dead lever cooperation installation, the other end of spring with the interior roof mutually supports the contact of first valve casing.
Further, the valve core chain rod mechanism comprises a valve core connecting rod and a valve core which are fixedly connected up and down, the outer diameter sizes of the valve core connecting rod and the valve core are smaller than the inner diameter sizes of the second channels inside the first valve housing and the second valve housing, the top end of the valve core connecting rod is fixedly connected with the bottom end of the movable valve block, and the bottom end of the valve core is fixedly connected with the top end of the valve core seat.
Further, still include first packing circle and second packing circle, the inside bottom of first valve casing is equipped with a week first packing circle, the inside bottom of second valve casing is equipped with a week second packing circle, wherein, first packing circle is fixed on the inner wall of first valve casing through first fastening nut, second packing circle is fixed on the inner wall of second valve casing through second fastening nut, wherein, first packing circle and second packing circle respectively with the lateral wall of case connecting rod contacts each other, and wherein, the second air passage between the bottom of movable valve piece and the top of first packing circle with the end connection of first start-up pipeline.
Further, the first packing ring is disposed adjacent to the second packing ring.
Further, a gas detection port is formed in the top of the second valve casing, and the gas detection port is communicated with the second air passage.
Further, a valve action alarm is installed on the side portion of the first valve casing, an action trigger head of the valve action alarm is arranged on the side wall of the second ventilation channel, and a control port of the valve action alarm is electrically connected with the action alarm controller.
Further, a sealing ring is arranged between the connecting positions of the valve core seat and the valve seat.
Further, the air inlet channel comprises a first stage straight channel and a first stage curved channel communicated with the first stage straight channel, and the air outlet channel comprises a second stage straight channel and a second stage curved channel communicated with the second stage straight channel, wherein the first stage curved channel and the second stage curved channel are communicated.
The beneficial effects of the application are as follows:
1. the method comprises the steps that hydrogen in a hydrogen pipeline is input into hydrogen with rated pressure from an air inlet channel of the stop valve device, when the opening process of the stop valve is used for the first time, a second control valve is closed, a first control valve is opened, the hydrogen with the rated pressure passes through the air inlet channel and simultaneously passes through a first starting pipeline, the hydrogen passes through the first control valve and is conveyed to a second air passage, and a movable valve assembly is pushed to slide upwards in the second air passage; simultaneously, the valve core seat is propped open under the action of the air pressure of the hydrogen, so that the two sides of the first air passage are respectively communicated with the air inlet passage and the air outlet passage, the pipeline normally conveys the hydrogen, the stop valve device is switched on under the condition of normal air pressure, and the pipelines at the two sides of the stop valve device normally convey the hydrogen with rated pressure; the valve housing assembly and the valve core seat are respectively pushed by the hydrogen gas pressure at two positions to slide upwards, the whole valve body is compact in structure, and the valve body device is easy to open and close and is beneficial to maintenance.
2. After the stop valve works normally in ventilation, after the air passage inner matter flows through the first air passage and the second air passage, after the inlet pressure and the outlet pressure are balanced, the stop valve is controlled by the following control valve, the first control valve is closed, the second control valve is opened, and the stop valve device is in a normally-open normal working state.
3. When the hydrogen gas pressure conveyed by the pipeline behind the stop valve device is lower than the rated value (namely after the pressure is suddenly lost), or the pipeline is crashed or destroyed by unreliability, the hydrogen in the pipeline is rapidly reduced, at the moment, the elastic component rapidly resets to work, the valve core seat in the valve seat rapidly self-cuts off and closes, the gas path of the hydrogen pipeline is cut off, the hydrogen supply of the pipeline behind the valve body is cut off, and the hydrogen is prevented from continuously leaking to cause larger harm.
4. The valve core connecting rod slides relatively to the two packing rings, the valve body components at the two positions slide relatively to the moving valve component in combination with the inner wall of the first valve body, and the moving valve component is not easy to eccentric in the second air passage.
5. In order to detect whether the first air passage and the second air passage in the quick cut-off stop valve are communicated with air leakage or not, the sealing performance of the sealing component is checked, and a fixed detection device can be installed near the gas detection port to detect gas leakage.
6. When the hydrogen is out of pressure, the movable valve block slides downwards to touch the action trigger head of the valve action alarm, the signal of the valve body rapid cutting-off is transmitted to the action alarm controller, and the controller further transmits the signal to the user side or informs an operator of the problem of on-site disposal.
Drawings
Fig. 1 is a general schematic of an embodiment according to the present application.
FIG. 2 is a detailed schematic view of a valve seat according to an embodiment of the present application.
Fig. 3 is a detailed schematic view of a valve housing assembly according to an embodiment of the present application.
FIG. 4 is a detailed schematic of a traveling valve assembly according to an embodiment of the present application.
Fig. 5 is a schematic diagram of an actual application scenario of the quick cutoff valve according to an embodiment of the present application.
Detailed Description
The conception, specific structure, and technical effects produced by the present application will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, aspects, and effects of the present application. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other.
It should be noted that, unless otherwise specified, when a feature is referred to as being "fixed" or "connected" to another feature, it may be directly or indirectly fixed or connected to the other feature. Further, the descriptions of the upper, lower, left, right, top, bottom, etc. used in the present application are merely with respect to the mutual positional relationship of the respective constituent elements of the present application in the drawings.
Furthermore, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any combination of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used in this disclosure to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element of the same type from another. For example, a first element could also be termed a second element, and, similarly, a second element could also be termed a first element, without departing from the scope of the present disclosure.
Referring to fig. 1-4, in some embodiments, the present application discloses a quick disconnect shutoff valve comprising: valve seat 100, valve housing assembly 200, traveling valve assembly 300, first activation conduit 400, second activation conduit 500, valve actuation alarm 600, and seal 700.
Referring to the valve seat 100 of fig. 1, a first air passage 110 is formed in the middle of the valve seat 100, and an air inlet passage 120 and an air outlet passage 130 which are communicated with the first air passage 110 are formed at both sides of the valve seat 100. The air inlet 120 and the air outlet 130 are respectively communicated with two ends of the pipeline for conveying hydrogen, the air inlet 120 inputs the hydrogen in the pipeline, and the air outlet 130 outputs the hydrogen to the other side of the pipeline.
Referring to fig. 1 in combination with fig. 3, a valve housing assembly 200 is fixed to the top of the valve seat 100, and a second vent passage 210 is opened in the interior of the valve housing assembly 200.
Referring to fig. 4 in combination with fig. 1, the moving valve assembly 300 slides inside the second ventilation duct 210. The traveling valve assembly 300 includes an elastic member 310 provided at the top, and a sealing member 320 is sleeved near the middle of the traveling valve assembly 300. The entire assembly of the traveling valve assembly 300 is a column-shaped assembly, and performs a sliding operation inside the second ventilation duct 210.
With continued reference to fig. 1, a first activation conduit 400 is connected between the valve seat 100 and the valve housing assembly 200. Two ends of the first starting pipeline 400 are respectively communicated with the second air passage 210 and the air inlet passage 120.
Referring to fig. 1, a first control valve 410 is installed on the first starting pipe 400. A second starting pipe 500 is further connected between the valve seat 100 and the valve housing assembly 200, and a second control valve 510 is installed on the second starting pipe 500. The two ends of the second starting pipeline 500 are respectively communicated with the second air passage 210 and the air outlet passage 130. Switching of the on-off state of the two control valves can adjust whether the starting pipeline is used for conducting gas into the second gas channel.
Referring to fig. 1, the bottom end of the traveling valve assembly 300 is coupled to the first air passage 110 to open or close the first air passage 110 and the second air passage 210. The tip of the elastic member 310 is in contact with the inner ceiling wall of the second ventilation duct 210. The sealing member 320 is in abutting contact with the inner sidewall of the valve housing assembly 200.
The quick cut-off stop valve is a normally closed valve, and the valve is in a closed state when the quick cut-off stop valve is not in use.
The method comprises the steps that hydrogen in a hydrogen pipeline is input into hydrogen with rated pressure from an air inlet channel of the stop valve device, when the opening process of the stop valve is used for the first time, a second control valve is closed, a first control valve is opened, the hydrogen with the rated pressure passes through the air inlet channel and simultaneously passes through a first starting pipeline, the hydrogen passes through the first control valve and is conveyed to a second air passage, and a movable valve assembly is pushed to slide upwards in the second air passage; simultaneously, the valve core seat is propped open under the action of the air pressure of the hydrogen, so that the two sides of the first air passage are respectively communicated with the air inlet passage and the air outlet passage, the pipeline normally conveys the hydrogen, the stop valve device is switched on under the condition of normal air pressure, and the pipelines at the two sides of the stop valve device normally convey the hydrogen with rated pressure; the valve housing assembly and the valve core seat are respectively pushed by the hydrogen gas pressure at two positions to slide upwards, the whole valve body is compact in structure, and the valve body device is easy to open and close and is beneficial to maintenance.
After the stop valve works normally in ventilation, after the air passage inner matter flows through the first air passage and the second air passage, after the inlet pressure and the outlet pressure are balanced, the stop valve is controlled by the following control valve, the first control valve is closed, the second control valve is opened, and the stop valve device is in a normally-open normal working state.
When the hydrogen gas pressure conveyed by the pipeline behind the stop valve device is lower than the rated value (namely after the pressure is suddenly lost), or the pipeline is crashed or destroyed by unreliability, the hydrogen in the pipeline is rapidly reduced, at the moment, the elastic component rapidly resets to work, the valve core seat in the valve seat rapidly self-cuts off and closes, the gas path of the hydrogen pipeline is cut off, the hydrogen supply of the pipeline behind the valve body is cut off, and the hydrogen is prevented from continuously leaking to cause larger harm.
Referring to fig. 3, the valve housing assembly 200 includes a first valve housing 220 and a second valve housing 230 fixedly connected in sequence from top to bottom. The space inside the first and second valve casings 220 and 230 constitutes the second ventilation duct 210. The connecting position between the first valve body and the second valve body is fixed by bolts.
Referring to fig. 4, the traveling valve assembly 300 includes a spool seat 330, a spool link mechanism 340, and a traveling valve block 350, which are sequentially connected from bottom to top. The top of the moving valve block 350 is provided with a spring fixing rod 351, and the middle periphery of the moving valve block 350 is provided with a spring mounting groove. The elastic member 310 is a spring, which effectively reduces the cost of the elastic member. The spring is mounted in a fit with the spring mounting groove, and contacts with the inner side wall of the second ventilation channel 210 in a mutually propping manner. One end of the spring is mounted in cooperation with the spring fixing rod 351, and the other end of the spring is in contact with the inner top wall of the first valve housing 220. The spring is not easy to pop out from the spring fixing rod, and the other end of the spring is matched with the groove of the inner top wall of the first valve casing.
Referring to fig. 4, the valve core link mechanism 340 includes a valve core link 341 and a valve core 342 fixedly connected up and down. The outer diameter sizes of the valve core connecting rod 341 and the valve core 342 are smaller than the inner diameter sizes of the second air passage inside the first valve housing 220 and the second valve housing 230, and the valve core connecting rod 341 and the valve core 342 do not slide relatively on the side wall inside the second air passage. The top end of the valve core connecting rod 341 is fixedly connected with the bottom end of the movable valve block 350, the bottom end of the valve core 342 is fixedly connected with the top end of the valve core seat 330, and the movable valve block slides relatively with the side wall in the second ventilation channel.
Referring to fig. 3, the quick shut-off valve further includes a first packing 221 and a second packing 231. The inner bottom end of the first valve housing 220 is provided with a circumference of a first packing ring 221, and the inner bottom end of the second valve housing 230 is provided with a circumference of a second packing ring 231. The first packing ring 221 is fixed to the inner wall of the first valve housing 220 by the first fastening nut 222, and the second packing ring 231 is fixed to the inner wall of the second valve housing 230 by the second fastening nut 232. The first packing 221 and the second packing 231 are in contact with the outer side wall of the valve body connecting rod 341. The second vent passage 210 between the bottom of the traveling valve block 350 and the top of the first packing 221 is connected to the end of the first activation conduit 400. As shown in fig. 1, fig. 3 and fig. 4, the valve core connecting rod slides relatively to the two packing rings, the moving valve block slides relatively to the inner wall of the first valve body, the valve body components at the two positions slide relatively to the moving valve component, and the moving valve component is not easy to generate eccentric condition in the second air passage.
Referring to fig. 1, the first packing ring 221 is disposed adjacent to the second packing ring 231, and the two packing rings cooperate with the valve core connecting rod to make the second air passage between the packing ring and the top of the first valve body be a sealed air passage, and the hydrogen of the first starting pipeline can push the moving valve block to slide in the section of sealed air dividing passage.
Referring to fig. 1, a gas detection port 233 is opened at the top of the second valve housing 230, and the gas detection port 233 communicates with the second ventilation duct 210. In order to detect whether the first air passage and the second air passage in the quick cut-off stop valve are communicated with air leakage or not, the sealing performance of the sealing component is checked, and a fixed detection device can be installed near the gas detection port to detect gas leakage.
Referring to fig. 1, a valve action alarm 600 is installed at a side portion of the first valve housing 220, an action trigger of the valve action alarm 600 is disposed at a side wall of the second ventilation duct 210, and a control port of the valve action alarm 600 is electrically connected to an action alarm controller 610. When the hydrogen is out of pressure, the movable valve block slides downwards to touch the action trigger head of the valve action alarm, the signal of the valve body rapid cutting-off is transmitted to the action alarm controller, and the controller further transmits the signal to the user side or informs an operator of the problem of on-site disposal.
Referring to fig. 1, a sealing ring 700 is provided between the connection position between the valve seat 100 and the valve seat 330, so that the sealing performance of the two is improved.
Referring to fig. 2, the intake duct 120 includes a first stage straight passage 121 and a first stage curved passage 122 communicating with the first stage straight passage 121. The gas outlet channel 130 includes a second stage straight channel 131 and a second stage curved channel 132 in communication with the second stage straight channel 131. One end of the first stage curved path 122 and one end of the second stage curved path 132 are respectively communicated with the first air passage 110. The tortuous passageway of design is effective to be adjusted pipeline input, the atmospheric pressure uniformity of output like this, makes this valve body both sides can stably carry hydrogen, and the case seat can stably open the oral stability output atmospheric pressure of specific size.
Referring to fig. 5, the above-described rapid cutoff valve is applied to a scene including the rapid cutoff valve 1000, the hydrogen production device 2000, the hydrogen storage tank 3000, the first valve 4100, the second valve 4200, the hydrogen user 5000, and the hydrogen alarm line 6000. The hydrogen produced by the hydrogen production equipment is stored in a hydrogen storage tank, and an automatic control valve and a quick cut-off valve are arranged on a pipeline behind the hydrogen storage tank. When the pipeline from the back of the quick cut-off valve to the hydrogen user is crashed or damaged by unreliability, the pressure in the pipeline is rapidly reduced, the quick cut-off valve is rapidly closed, the hydrogen storage tank is cut off to supply hydrogen, and the hydrogen is prevented from being continuously leaked to cause larger harm. The quick cut-off valve is provided with an action alarm, after the quick cut-off valve acts, an alarm is given, and meanwhile, the valve and the user side valve are closed after the storage tank is closed, so that the safety level of the hydrogen supply side and the user side is further improved, and meanwhile, operators are notified of the problem of on-site disposal.
The present application is not limited to the above embodiments, but can be modified, equivalent, improved, etc. by the same means to achieve the technical effects of the present application, which are included in the spirit and principle of the present disclosure. Are intended to fall within the scope of the present application. Various modifications and variations are possible in the technical solution and/or in the embodiments within the scope of the application.
Claims (8)
1. A quick disconnect shutoff valve, comprising:
the valve seat (100), a first air passage (110) is arranged in the middle of the valve seat (100), an air inlet passage (120) and an air outlet passage (130) which are communicated with the first air passage (110) are respectively arranged on two sides of the valve seat (100),
a valve housing assembly (200) fixed on the top of the valve seat (100), a second vent passage (210) is arranged in the valve housing assembly (200),
the movable valve assembly (300) slides in the second air passage (210), the movable valve assembly (300) comprises an elastic component (310) arranged at the top, a sealing component (320) is sleeved nearby the middle part of the movable valve assembly (300), the whole assembly of the movable valve assembly (300) is a columnar assembly, and sliding operation is performed in the second air passage (210);
a first starting pipeline (400) connected between the valve seat (100) and the valve housing assembly (200), wherein a first control valve (410) is arranged on the first starting pipeline (400), and two ends of the first starting pipeline (400) are respectively communicated with the second air passage (210) and the air inlet passage (120);
a second starting pipeline (500) connected between the valve seat (100) and the valve housing assembly (200), wherein a second control valve (510) is arranged on the second starting pipeline (500), and two ends of the second starting pipeline (500) are respectively communicated with the second air passage (210) and the air outlet passage (130);
wherein the bottom end of the movable valve assembly (300) is matched with the first air passage (110) to open and communicate with or close the first air passage (110) and the second air passage (210),
wherein the top end of the elastic component (310) is in contact with the inner top wall of the second air passage (210) in a propping way,
and wherein the sealing member (320) is in abutting contact with an inner sidewall of the valve housing assembly (200);
the valve housing assembly (200) comprises a first valve housing (220) and a second valve housing (230) which are fixedly connected in sequence from top to bottom, the space inside the first valve housing (220) and the second valve housing (230) forms the second ventilation channel (210),
the movable valve assembly (300) comprises a valve core seat (330), a valve core chain rod mechanism (340) and a movable valve block (350) which are sequentially connected from the bottom end to the top end, a spring fixing rod (351) is arranged at the top of the movable valve block (350), a spring mounting groove is arranged at the periphery of the middle part of the movable valve block (350),
the elastic component (310) is a spring,
wherein the spring is mounted in an adapting way with the spring mounting groove, the spring is contacted with the inner side wall of the second air passage (210) in a mutual propping way,
and wherein one end of the spring is mounted in cooperation with the spring fixing rod (351), and the other end of the spring is in abutting contact with the inner top wall of the first valve housing (220);
the hydrogen of the hydrogen pipeline inputs the hydrogen of rated pressure from the intake duct (120), uses the quick cut-off valve to open the process for the first time is: closing the second control valve (510), opening the first control valve (410), and pushing the movable valve assembly (300) to slide upwards in the second air passage (210) when hydrogen with rated air pressure passes through the air inlet passage (120) and passes through the first starting pipeline (400) and is conveyed to the second air passage (210) through the first control valve (410); simultaneously, the valve core seat (330) is propped open by hydrogen under the action of the air pressure of the hydrogen, so that the two sides of the first air passage (110) are respectively communicated with the air inlet passage (120) and the air outlet passage (130), the hydrogen which is normally conveyed by the pipelines is quickly cut off and turned on under the condition of normal air pressure, and the hydrogen with rated pressure is normally conveyed by the pipelines at the two sides of the quick cut off and turned off; the hydrogen gas pressures at the two positions respectively push the valve shell assembly (200) and the valve core seat (330) to slide upwards;
after the quick cut-off valve works normally in ventilation, after the pressure of the inlet and the outlet is balanced after the air passage inner matter flows through the first air passage (110) and the second air passage (210), the quick cut-off valve is in a normally-open normal working state by closing the first control valve (410) and opening the second control valve (510);
when the hydrogen gas pressure delivered by the quick cut-off stop valve is lower than the rated value, namely after the pressure is suddenly lost, or when the pipeline is crashed or destroyed by unreliability, the hydrogen in the pipeline is quickly reduced, at the moment, the elastic component (310) is quickly reset to work, the valve core seat (330) in the valve seat (100) is quickly cut off and closed, the gas path of the hydrogen pipeline is cut off, and the hydrogen supply of the pipeline behind the valve body is cut off.
2. The quick cutoff valve according to claim 1, wherein,
the valve core chain rod mechanism (340) comprises a valve core connecting rod (341) and a valve core (342) which are fixedly connected up and down, the outer diameter sizes of the valve core connecting rod (341) and the valve core (342) are smaller than the inner diameter sizes of second channels inside the first valve casing (220) and the second valve casing (230), the top end of the valve core connecting rod (341) is fixedly connected with the bottom end of the movable valve block (350), and the bottom end of the valve core (342) is fixedly connected with the top end of the valve core seat (330).
3. The quick disconnect shutoff valve of claim 2, wherein,
also comprises a first packing ring (221) and a second packing ring (231),
a circle of the first packing ring (221) is arranged at the inner bottom end of the first valve casing (220), a circle of the second packing ring (231) is arranged at the inner bottom end of the second valve casing (230),
wherein the first packing ring (221) is fixed on the inner wall of the first valve housing (220) through a first fastening nut (222), the second packing ring (231) is fixed on the inner wall of the second valve housing (230) through a second fastening nut (232),
wherein the first packing ring (221) and the second packing ring (231) are respectively contacted with the outer side wall of the valve core connecting rod (341),
and wherein the second air passage (210) between the bottom of the moving valve block (350) and the top of the first packing ring (221) is connected with the end of the first starting pipe (400).
4. A quick shut-off valve according to claim 3, wherein,
the first packing (221) is disposed adjacent to the second packing (231).
5. The quick cutoff valve according to claim 1, wherein,
a gas detection port (233) is formed in the top of the second valve casing (230), and the gas detection port (233) is communicated with the second ventilation channel (210).
6. The quick cutoff valve according to claim 1, wherein,
the side part of the first valve casing (220) is provided with a valve action alarm (600), an action trigger head of the valve action alarm (600) is arranged on the side wall of the second air passage (210), and a control port of the valve action alarm (600) is electrically connected with an action alarm controller (610).
7. The quick disconnect shutoff valve of claim 2, wherein,
a sealing ring (700) is arranged between the connecting positions of the valve core seat (330) and the valve seat (100).
8. The quick cutoff valve according to claim 1, wherein,
the air inlet channel (120) comprises a first stage straight channel (121) and a first stage curved channel (122) communicated with the first stage straight channel (121),
the air outlet channel (130) comprises a second-stage straight channel (131) and a second-stage curved channel (132) communicated with the second-stage straight channel (131),
wherein, one end of the first stage bending channel (122) and one end of the second stage bending channel (132) are respectively communicated with the first air passage (110).
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| CN113864666A (en) | 2021-12-31 |
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