CN113898871A - Integrated pressure reducing cylinder valve - Google Patents

Integrated pressure reducing cylinder valve Download PDF

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Publication number
CN113898871A
CN113898871A CN202010573727.4A CN202010573727A CN113898871A CN 113898871 A CN113898871 A CN 113898871A CN 202010573727 A CN202010573727 A CN 202010573727A CN 113898871 A CN113898871 A CN 113898871A
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CN
China
Prior art keywords
valve
valve body
cylinder
hydrogen
outlet
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Pending
Application number
CN202010573727.4A
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Chinese (zh)
Inventor
黄山
孙吉党
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Rugao Hanhydrogen New Energy Technology Co Ltd
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Rugao Hanhydrogen New Energy Technology Co Ltd
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Application filed by Rugao Hanhydrogen New Energy Technology Co Ltd filed Critical Rugao Hanhydrogen New Energy Technology Co Ltd
Priority to CN202010573727.4A priority Critical patent/CN113898871A/en
Publication of CN113898871A publication Critical patent/CN113898871A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • 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
    • F16K13/00—Other constructional types of cut-off apparatus; Arrangements for cutting-off
    • 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
    • F16K27/00—Construction of housing; Use of materials therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/026—Special adaptations of indicating, measuring, or monitoring equipment having the temperature as the parameter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/12—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures
    • F17C13/123—Arrangements or mounting of devices for preventing or minimising the effect of explosion ; Other safety measures for gas bottles, cylinders or reservoirs for tank vehicles or for railway tank wagons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0341—Filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0388—Arrangement of valves, regulators, filters
    • F17C2205/0394—Arrangement of valves, regulators, filters in direct contact with the pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/012—Hydrogen
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0192—Propulsion of the fluid by using a working fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/046—Methods for emptying or filling by even emptying or filling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/04—Reducing risks and environmental impact
    • F17C2260/042—Reducing risk of explosion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/061—Fluid distribution for supply of supplying vehicles
    • 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
    • Y02E60/32—Hydrogen storage

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention discloses an integrated pressure reducing cylinder valve, which is connected to a hydrogen cylinder and comprises: the pressure relief valve comprises a valve body, an inlet, a valve body outlet and a discharge port which are positioned on the valve body, a stop valve, a pressure relief system and a safety valve which are arranged inside the valve body, and a pressure sensor and an electromagnetic valve which are arranged outside the valve body; the inlet is in fluid communication with a gas source outlet of a hydrogen fuel cell electric automobile, the valve body outlet is in fluid communication with a downstream cell stack of the hydrogen fuel cell electric automobile, the stop valve and the pressure reducing system are sequentially arranged in a fluid channel between the hydrogen cylinder and the valve body outlet, and a safety valve is arranged in the fluid channel between an outlet of the pressure reducing system and the discharge port; the invention integrates a multi-stage pressure reduction system, so that the outlet pressure is more stable and the pressure regulation is more reliable; even if the pressure of the gas cylinder is as low as 1.5MPa, the stable output can be ensured, and the output in the full flow range is stable.

Description

Integrated pressure reducing cylinder valve
Technical Field
The invention relates to a cylinder valve, in particular to an integrated pressure reducing cylinder valve suitable for a hydrogen fuel cell automobile.
Background
At present, the hydrogen fuel cell industry is rapidly developed, the whole industry chain is still in the mature and complete process, the integrated cylinder valve is one of key products on the whole industry chain, the market demand for the product is very large, the cylinder valve can be widely applied to hydrogen fuel cell automobiles and hydrogen fuel motorcycles and used as a valve for controlling the hydrogen in a cylinder to enter and exit in a hydrogen supply system, and the pressure of an outlet of the cylinder valve directly influences the service life of a stack system.
However, when the existing integrated cylinder valve is particularly applied to a hydrogen power motorcycle, the pressure stabilizing effect is poor when hydrogen is conveyed, and meanwhile, the existing cylinder valve usually has no filter, is complex in pipeline, has leakage points when the pipeline is connected with a joint, and has great potential safety hazard.
Disclosure of Invention
In order to solve the technical problem of unstable hydrogen supply of the existing cylinder valve, the invention implants a pressure reducing valve system in the valve body, integrates the structure in the cylinder valve, improves the stability and the integration level of the outlet flow of the cylinder valve, and is mainly applied to a 2.5-5KW electric pile system.
In order to achieve the object of the present invention, the present invention provides an integrated pressure reducing cylinder valve connected to a hydrogen cylinder, comprising: the pressure relief valve comprises a valve body, an inlet, a valve body outlet and a discharge port which are positioned on the valve body, a stop valve, a pressure relief system and a safety valve which are arranged inside the valve body, and a pressure sensor and an electromagnetic valve which are arranged outside the valve body; the inlet is in fluid communication with an air source outlet of the hydrogen fuel cell electric automobile, the valve body outlet is in fluid communication with a downstream electric pile of the hydrogen fuel cell electric automobile, the stop valve and the pressure reducing system are sequentially arranged in a fluid channel between the hydrogen cylinder and the valve body outlet, and a safety valve is arranged in the fluid channel between an outlet of the pressure reducing system and the discharge port.
As a further improvement, a one-way valve is arranged on a fluid channel between the inlet of the valve body and the hydrogen cylinder, and hydrogen flows into the hydrogen cylinder through the one-way valve.
As a further improvement, the pressure reducing system comprises a first-stage pressure reducing valve and a second-stage pressure reducing valve which are sequentially arranged from the outlet of the hydrogen cylinder to the outlet of the valve body, the pressure reducing form of the two-stage pressure reducing valve can be adjusted according to requirements, and the hydrogen outlet pressure is adjusted through two-stage pressure reduction, so that direct impact on the galvanic pile is avoided. Because the multistage pressure reduction is adopted, the pressure reduction capacity of the system is more stable, the pressure regulation is more reliable, even if the pressure of an air source is lower, the stable output can be still ensured, and the output in the full flow range is stable.
As a further improvement, the axis of the first-stage pressure reducing valve and the axis of the second-stage pressure reducing valve are arranged in parallel with each other.
As a further improvement, at the inlet of the first-stage pressure reducing valve, the valve body is communicated with a pressure sensor, the pressure sensor is arranged outside the valve body, the pressure sensor is installed on the valve body through a pressure sensor joint and is communicated with a fluid channel in the valve body, and the pressure sensor can display the residual amount of hydrogen in the hydrogen cylinder in real time.
As a further improvement, a filter is arranged at the inlet of the first-stage pressure reducing valve.
As a further improvement, a fluid channel in the valve body is communicated with the hydrogen cylinder through a low-pressure adapter, an overtemperature release valve TPRD is arranged on the fluid channel between the outlet of the hydrogen cylinder and the release port of the valve body, once the pressure in the hydrogen cylinder exceeds the limit, the TPRD can be automatically broken through by hydrogen, redundant hydrogen is discharged from the release port, and the explosion of the hydrogen cylinder is prevented.
As a further improvement, a temperature sensor is communicated in a fluid channel communicated with the hydrogen cylinder, and the temperature of the hydrogen in the hydrogen cylinder is sensed in real time.
As a further improvement, the safety valve is arranged at the outlet of the second-stage pressure reducing valve and communicated to the safety relief port, and the hydrogen which is subjected to the secondary pressure reduction and exceeds the preset pressure is discharged through the low-pressure relief valve.
As a further improvement, the axes of the one-way valve and the over-temperature relief valve are arranged perpendicular to each other.
As a further improvement, the stop valve and the axis of the first-stage pressure reducing valve are arranged perpendicular to each other.
As a further improvement, the one-way valve, the over-temperature relief valve, the stop valve and the first-stage pressure reducing valve are approximately positioned in the same plane, so that the layout space in the valve body is effectively optimized, and the structure of the valve body is more compact.
The invention is not only suitable for controlling the stable output of hydrogen in the container, but also suitable for various gases including nitrogen, air, hydrogen, helium and the like.
The invention adopts an original function and structure integrated design technology, integrates functional components such as a filter, a one-way valve, a manual stop valve, an over-temperature relief valve TPRD, a high-pressure monitoring system, a gas pressure reducing system, a low-pressure solenoid valve, a low-pressure gas relief valve, a temperature sensor and the like, saves pipelines and joints among the components, and has high product integration level; meanwhile, multiple filtration is adopted, so that the pollution resistance is stronger; a multi-stage pressure reduction system is implanted, so that the outlet pressure is more stable, and the pressure regulation is more reliable; even if the pressure of the gas cylinder is as low as 1.5MPa, the stable output can be ensured, and the output in the full flow range is stable.
Drawings
In order that the contents of the present invention will be more readily understood, a more particular description of the invention will be rendered by reference to the appended drawings and examples.
Fig. 1 is a schematic structural diagram according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of an embodiment of a section A-A in FIG. 1.
FIG. 3 is a schematic structural diagram of an embodiment of a section B-B in FIG. 1.
FIG. 4 is a schematic structural diagram of an embodiment of a section C-C in FIG. 3.
Fig. 5 is a schematic diagram of an embodiment of the present invention.
In the figure: 1-valve body, 2-overtemperature relief valve, 21-JOB temperature-sensing glass ball, 22-TPRD valve core, 23-TPRD rear cover, 24-belleville spring, 3-one-way valve, 31-one-way valve seat, 32-one-way valve core, 33-valve core, 34-spring gasket, 35-one-way valve spring, 4-stop valve, 40-antifriction pad, 41-stop valve cover, 42-stop valve rotating head, 43-valve seat pressing block, 44-stop valve rod, 45-stop valve seat, 46-stop valve limiting block, 5-pressure sensor, 50-O-shaped ring, 51-opening check ring, 52-rubber flat pad, 53-pressure sensor interface, 6-first-stage pressure reducing valve, 61-first-stage pressure reducing valve cover, 62-first-stage pressure reducing valve sleeve, 63-first stage pressure reducing valve core component, 64-first stage pressure reducing valve spring, 65-first stage pressure reducing valve seat, 7-second stage pressure reducing valve, 71-second stage pressure reducing valve rear cover, 72-second stage pressure reducing valve seat, 73-second stage pressure reducing valve spring, 74-second stage pressure reducing valve core component, 8-electromagnetic valve, 80-electromagnetic coil, 81-electromagnetic valve spring, 82-magnetic isolation gasket, 83-electromagnetic valve shell, 84-round head nut, 85-armature, 9-safety valve, 10-hydrogen cylinder, 11-valve body inlet, 12-relief outlet, 13-filter, 14-temperature sensor, 16-safety valve core, 17-valve cover safety valve, 30-safety valve spring, 100-charging interface.
Detailed Description
The technical solutions in the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention is suitable for hydrogen fuel cell electric automobiles, in particular to hydrogen fuel cell electric motorcycles, which are arranged on hydrogen cylinders and output stable and reliable hydrogen power sources.
As shown in fig. 1 to 5, an integrated pressure reducing cylinder valve, which is connected to a hydrogen cylinder 10, includes: the hydrogen fuel cell electric automobile hydrogen storage device comprises a valve body 1, a valve body inlet 11, a valve body outlet and a discharge port 12 which are positioned on the valve body 1, a stop valve 4, a pressure reducing system and a safety valve 9 which are arranged inside the valve body 1, and a pressure driver 5 and an electromagnetic valve 8 which are arranged outside the valve body 1, wherein the valve body inlet 11 is in fluid communication with a gas source outlet of the hydrogen fuel cell electric automobile, the valve body outlet is in fluid communication with a downstream electric pile of the hydrogen fuel cell electric automobile, the stop valve 4 and the pressure reducing system are sequentially arranged in a fluid passage between an outlet of a hydrogen cylinder 10 and the valve body outlet, and the safety valve 9 is arranged in the fluid passage between the outlet of the pressure reducing system and the discharge port 12.
As a further improvement, an inflation connector 100 is connected outside the valve body 1 at the valve body inlet 11, a one-way valve 3 communicated to the hydrogen cylinder 10 is arranged on a fluid passage in the valve body 1 at the valve body inlet 11, hydrogen flows into the hydrogen cylinder 10 through the one-way valve 3, and the open end of the one-way valve 3 is close to one side of the valve body inlet 11.
As a further improvement, a filter 13 is arranged in the valve body 1 at the valve body inlet 11 on the fluid passage of the valve body inlet 11, and in some embodiments, the filtering precision of the filter 13 reaches 10 μ.
As a further improvement, the check valve 3 includes a check valve seat 31, a valve core 33, a spring washer 34, and a check valve spring 35 sequentially arranged along the axial direction of the check valve 3 along the fluid flowing direction, in some embodiments, the valve core 33, the spring washer 34, and the check valve spring 35 are externally sleeved with the check valve core 32, the check valve spring 35 near the outlet side of the check valve 3 at least partially extends outside the check valve core 32, and the check valve core 32 can limit the check valve spring 35; in some embodiments, at least one split retainer ring 51 and an O-ring 50 are arranged between the joint surfaces of the check valve seat 31 and the valve body 1, so that the air tightness of the check valve 3 can be effectively ensured; of course, the check valve may also adopt other forms of existing check valve structures, and will not be described in detail herein.
In some embodiments, the check valve 3 is directly disposed in the valve body at the inlet of the valve body to increase the space in the valve body and facilitate the arrangement of other components, and at least one split retaining ring 51 and an O-ring 50 are disposed between the check valve 3 and the inflation connector 100.
As a further improvement, at least three paths of fluid channels are arranged in the valve body 1, a first path of fluid channel is communicated to the hydrogen cylinder 10 from the valve body inlet 11, and the first path of fluid channel is a gas storage channel; the second path of fluid channel is directly communicated to a safety release port 12 from the outlet of the hydrogen cylinder 10 through a super-wet release valve 2, and is a pressure release channel; the third path of fluid channel is communicated to the outlet of the valve body by the electromagnetic valve 8 after the outlet of the hydrogen cylinder 10 passes through the stop valve 4 and the pressure reducing system, and the third path of fluid channel is a gas transmission channel.
As a further improvement, the over-temperature relief valve 2 is used for preventing the explosion of the hydrogen cylinder caused by the overhigh temperature of the gas in the hydrogen cylinder 10, and comprises a TPRD valve core 22, a JOB temperature-sensing glass ball 21 and a TPRD rear cover 23 which are sequentially arranged along the flow direction of the fluid during relief, wherein the tip end of the JOB temperature-sensing glass ball 21 abuts against a groove at the tail end of the TPRD valve core 22 and seals a fluid passage communicated to the relief port 12, and the tail end of the JOB temperature-sensing glass ball 21 abuts against the TPRD rear cover 23; the TPRD valve core 22 is provided with a plurality of grooves along the axial direction of the TPRD valve core, sealing materials are arranged in the grooves, at least one circle of split retainer ring 51 is sleeved at the tail part of the TPRD valve core 22, and at least one circle of split retainer ring 51 and an O-shaped ring 50 are sleeved at the front part of the TPRD valve core 22.
As a further improvement, a belleville spring 24 is sleeved between the TPRD valve core 22 and the valve body 1 along the axial direction of the TPRD valve core, when the valve is arranged, the JOB temperature-sensitive glass ball 21 supports the TPRD valve core 22, and the belleville spring 24 enables the TPRD valve core 22 to be tensioned in the valve body 1, so that the TPRD valve core 22 can rapidly open a fluid channel when the pressure is released, and the safety of a hydrogen cylinder is guaranteed.
When the gas pressure in the hydrogen cylinder exceeds the rated pressure and the temperature in the cylinder or the ambient temperature rises, the liquid in the JOB temperature-sensitive glass balloon 21 is heated to expand, when the temperature in the hydrogen cylinder 10 or the ambient temperature rises to the bearing temperature range of the JOB temperature-sensitive glass balloon 21, the outer layer glass of the JOB temperature-sensitive glass balloon 21 is burst, the TPRD valve core 22 loses the supporting force of the JOB temperature-sensitive glass balloon 21 on the TPRD valve core, and moves upwards under the action of the gas pressure in the hydrogen cylinder, so that the fluid channel in the valve body is communicated with the safety release port.
As a further improvement, the axis of the stop valve and the axis of the pressure reducing system are arranged perpendicular to each other, the existing conventional structure of the stop valve can be adopted, but the volume of the stop valve is reduced as much as possible, and the valve body structure is more compact. In some embodiments, the stop valve 4 includes the stop valve seat 45, the stop valve stem 44, the stop valve rotating head 42, and the stop valve cover 41, which are sequentially arranged along the axis thereof, the valve seat pressing block 43 is sleeved outside the stop valve rotating head 42 and the stop valve stem 44, and the anti-wear pad 40 is sleeved between the stop valve cover 41 and the stop valve rotating head 42.
In some embodiments, the stop valve is a manual stop valve, the stop valve cover 41 is at least partially disposed outside the valve body or a rotating part connected with the stop valve cover is exposed outside the valve body, and the opening and closing of the fluid passage are controlled by rotating the manual stop valve, so that the stop valve is in a normally open state.
Preferably, an O-ring 50 and a split retainer ring 51 are sleeved between the stop valve rotating head 42 and the valve seat pressing block 43, and at least one O-ring 50 and a split retainer ring 51 are sleeved on the contact surfaces of the stop valve seat 45, the valve seat pressing block 43 and the valve body.
As a further improvement, a stop valve stopper 46 for limiting the rotation range of the stop valve cover 41 is provided in a gap formed by the stop valve cover 41, the stop valve rotating head 42, and the valve seat pressing block 43.
As a further improvement, the pressure reducing system adopts a pressure reducing valve, in some embodiments, only one pressure reducing valve is adopted, and the pressure reducing valve can be an existing conventional pressure reducing structure and can also adopt an existing dynamic negative feedback pressure reducing structure.
As a further improvement, the pressure reducing system comprises a first-stage pressure reducing valve 6 and a second-stage pressure reducing valve 7 which are arranged in sequence, the pressure reducing form of the two-stage pressure reducing valve can be adjusted according to requirements, and the hydrogen outlet pressure is adjusted through two-stage pressure reduction, so that direct impact on the galvanic pile is avoided. Because the multistage pressure reduction is adopted, the pressure reduction capacity of the system is more stable, the pressure regulation is more reliable, even if the pressure of an air source is lower, the stable output can be still ensured, and the output in the full flow range is stable.
As a further improvement, the axes of the first stage pressure reducing valve 6 and the second stage pressure reducing valve 7 are arranged parallel to each other, and in some embodiments, the first stage pressure reducing valve 6, the second stage pressure reducing valve 7 and the shut-off valve 4 are substantially in the same plane.
As a further improvement, the first-stage pressure reducing valve adopts the conventional structure for first-stage pressure reduction of hydrogen in the hydrogen cylinder, and comprises a first-stage pressure reducing regulating spring 64, a first-stage pressure reducing valve seat 65 and a first-stage pressure reducing valve spool assembly 63, wherein the first-stage pressure reducing regulating spring 64, the first-stage pressure reducing valve seat 65 and the first-stage pressure reducing valve spool assembly 63 are arranged along the axial direction of the first-stage pressure reducing valve, and the first-stage pressure reducing valve spool assembly 63 is biased by the first-stage pressure reducing regulating spring 64.
In some embodiments, a first-stage pressure reducing valve sleeve 62 and a first-stage pressure reducing valve cover 61 are sequentially arranged outside the first-stage pressure reducing valve core assembly 63 along a direction perpendicular to the axis of the first-stage pressure reducing valve, and an opening retaining ring 51 and/or an O-shaped ring 50 are sequentially and correspondingly arranged among the first-stage pressure reducing valve core assembly 63, the first-stage pressure reducing valve sleeve 62, the first-stage pressure reducing valve cover 61 and the inner wall of the valve body.
As a further improvement, a filter 13 is arranged at the inlet of the first-stage pressure reducing valve 6, the filtering precision of the filter 13 reaches 10 mu, impurities can be effectively filtered, and the anti-pollution capacity of the system is higher.
As a further improvement, the second-stage pressure reducing valve 7 comprises a second-stage pressure reducing valve rear cover 71, a second-stage pressure reducing valve seat 72, a second-stage pressure reducing valve spring 73 and a second-stage pressure reducing valve core assembly 74 which are sequentially arranged along the axial direction thereof, and at least one O-ring 50 is sleeved at the contact surfaces of the second-stage pressure reducing valve rear cover 71, the second-stage pressure reducing valve seat 72 and the second-stage pressure reducing valve core assembly 74 and the valve body 1.
As a further improvement, at the inlet of the first-stage pressure reducing valve 6, a pressure sensor joint 53 is arranged on the fluid passage of the valve body 1, and the pressure sensor joint 53 is arranged between the outlet of the hydrogen cylinder 10 and the inlet of the first-stage pressure reducing valve and is connected with a pressure sensor 5 for sensing the residual amount of hydrogen in the hydrogen cylinder 10; the pressure sensor 5 can be directly arranged in the fluid channel, preferably, the pressure sensor 5 is arranged outside the valve body 1, the pressure sensor 5 is installed on the valve body through a nut and is communicated with the fluid channel in the valve body, and the pressure sensor can display the residual amount of hydrogen in the hydrogen cylinder in real time.
As a further improvement, the solenoid valve 8 includes a solenoid valve housing 83 arranged vertically from inside to outside along the axis thereof, and a solenoid coil 80 wound around the solenoid valve housing, wherein an armature 85 is arranged in the solenoid valve housing 83, a solenoid valve spring 81 is arranged in the armature 85, and a round nut 84 is connected to the tail of the solenoid valve housing 83.
As a further improvement, a rubber flat gasket is arranged between the outlet of the second-stage pressure reducing valve and the inlet of the electromagnetic valve.
As a further improvement, a magnetic isolation gasket 82 is disposed between the armature 85 and the solenoid valve housing 83.
As a further improvement, the axes of the one-way valve 3 and the over-temperature relief valve 2 are arranged perpendicular to each other.
As a further improvement, the axes of the shut-off valve 4 and the first-stage pressure reducing valve 6 are arranged perpendicular to each other.
As a further improvement, the valve body 1 is further provided with a fourth fluid channel communicated with the hydrogen cylinder 10, and a temperature sensor 14 for sensing the temperature in the hydrogen cylinder is arranged in the fourth fluid channel; in some embodiments, the temperature sensor 14 may be disposed within other fluid channels; in other embodiments, the temperature sensor 14 is connected to the valve body 1 through a connector, and is communicated with a fluid passage in the valve body 1 at the outlet of the hydrogen cylinder 10.
As a further improvement, the safety valve 9 is a low-pressure relief valve, and is arranged on a fluid channel between the outlet of the second-stage pressure reducing valve 7 and the safety relief port 12, and is used for discharging the hydrogen gas with the excessive pressure after the second pressure reduction through the low-pressure relief valve; in some embodiments, the safety valve may also communicate with other safety vents on the valve body.
As a further improvement, the axis of the second-stage pressure reducing valve 7 and the axis of the relief valve 9 are perpendicular to each other, and the second-stage pressure reducing valve 7 and the relief valve 9 are substantially in the same plane.
As a further modification, the relief valve 9 includes a relief valve cover 16, a relief valve spool 17, and a relief valve spring 30 between the relief valve cover 16 and the relief valve spool 17, which are arranged in this order along the axis thereof. In some embodiments, the safety valve cover 16 and the safety valve spool 17 are provided with a split washer 52 and/or an O-ring 50 with the valve body 1.
As a further improvement, the check valve 3, the over-temperature relief valve 2, the stop valve 4 and the first-stage pressure reducing valve 6 are approximately in the same plane, so that the layout space in the valve body is effectively optimized, and the structure of the valve body is more compact.
The split check ring and/or the O-shaped ring are arranged on each functional component and the joint surface of the valve body correspondingly, so that the leakage point of the system is greatly reduced. The invention can save all connecting pipelines and joints among all functional parts, greatly reduce the structural size, greatly improve the assembly efficiency of the hydrogen system and greatly reduce the product cost.
The invention is not only suitable for controlling the inlet and outlet of hydrogen in the container, but also suitable for various gases including nitrogen, air, hydrogen, helium and the like.
The invention adopts an original function and structure integrated design technology, integrates functional components such as a filter, a one-way valve, a manual stop valve, an over-temperature relief valve TPRD, high-pressure monitoring, gas pressure reduction, a low-pressure solenoid valve, low-pressure gas relief, a temperature sensor and the like, and has high product integration level; and multiple filtration is adopted, so that the pollution resistance is stronger.
The invention has all functions of the existing cylinder valve, integrates the pressure reducing function, particularly adopts a multi-stage pressure reducing system, not only realizes the integrated layout of the pressure reducing system in a relatively small valve body space, but also ensures the outlet pressure to be more stable and the pressure to be more reliably regulated, can still ensure stable output even if the pressure of a gas cylinder is as low as 1.5MPa, the pressure range of the outlet of the valve body is 0.9-1bar, the rated outlet flow is 100NLPM, the output in the full flow range is stable, and the invention is mainly applied to 2.5-5KW electric pile systems.
The functional components such as the check valve, the stop valve, the over-temperature relief valve, the pressure sensor, the pressure reducing system, the electromagnetic valve, the safety valve, the temperature sensor and the like integrated in the valve body can be changed in position according to actual requirements, and the corresponding functions can be realized, so that the description is omitted.
The above disclosure is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or modifications that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the scope of the present invention.

Claims (10)

1. An integrated pressure relief cylinder valve connected to a hydrogen cylinder, comprising: a valve body, an inlet, a valve body outlet and a relief port on the valve body, a stop valve, a safety valve disposed in the valve body, and a pressure sensor and a solenoid valve disposed outside the valve body, the inlet of the valve body being in fluid communication with a gas source outlet of a hydrogen fuel cell electric vehicle, the valve body outlet being in fluid communication with a downstream stack of the hydrogen fuel cell electric vehicle,
the valve body is also integrated with a pressure reducing system, the stop valve and the pressure reducing system are sequentially arranged in a fluid channel between the hydrogen cylinder and the outlet of the valve body, and a safety valve is arranged in the fluid channel between the outlet of the pressure reducing system and the discharge port.
2. The integrated pressure relief cylinder valve of claim 1, wherein a one-way valve is disposed in the fluid path between the inlet of the valve body and the hydrogen cylinder.
3. An integrated pressure relief cylinder valve as defined in claim 2 wherein the pressure relief system comprises a first stage pressure relief valve and a second stage pressure relief valve in sequential communication from the outlet of the hydrogen cylinder to the outlet of the valve body, the axes of the first and second stage pressure relief valves being arranged parallel to each other.
4. An integrated pressure relief cylinder valve as claimed in claim 3, wherein a relief valve is disposed between the outlet of the second stage pressure relief valve and the discharge port, and the axis of the second stage pressure relief valve is perpendicular to the axis of the relief valve.
5. An integrated pressure relief cylinder valve as defined in claim 3 wherein the axis of said shut-off valve and the axis of said first stage pressure relief valve are disposed perpendicular to each other.
6. The integrated pressure relief cylinder valve of claim 3, wherein an over-temperature relief valve is disposed in the fluid path between the hydrogen cylinder and the relief port of the valve body, such that hydrogen will automatically burst through the over-temperature relief valve and remove excess hydrogen from the relief port once the pressure in the hydrogen cylinder exceeds the rated pressure.
7. An integrated pressure relief cylinder valve as defined in claim 6 wherein said check valve, over temperature relief valve, shut off valve, first stage pressure relief valve are in substantially the same plane.
8. An integrated pressure relief cylinder valve as defined in claim 6 wherein the axis of said one-way valve and the axis of said over temperature relief valve are disposed perpendicular to each other.
9. An integrated pressure relief cylinder valve according to any of claims 1-8, wherein the inlet of the valve body is provided with a gas filling connector outside the valve body and the corresponding inlet of the valve body is provided with a filter inside the valve body.
10. The integrated pressure relief cylinder valve according to any one of claims 1-8, wherein a temperature sensor for sensing the temperature of hydrogen in the hydrogen cylinder is disposed or connected to the fluid passage in the valve body;
the pressure sensor for sensing the residual amount of hydrogen in the hydrogen cylinder is communicated with a fluid channel between the hydrogen cylinder and the pressure reduction system.
CN202010573727.4A 2020-06-22 2020-06-22 Integrated pressure reducing cylinder valve Pending CN113898871A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010573727.4A CN113898871A (en) 2020-06-22 2020-06-22 Integrated pressure reducing cylinder valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010573727.4A CN113898871A (en) 2020-06-22 2020-06-22 Integrated pressure reducing cylinder valve

Publications (1)

Publication Number Publication Date
CN113898871A true CN113898871A (en) 2022-01-07

Family

ID=79186241

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010573727.4A Pending CN113898871A (en) 2020-06-22 2020-06-22 Integrated pressure reducing cylinder valve

Country Status (1)

Country Link
CN (1) CN113898871A (en)

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