CN112283575B - A pipeline system for a vehicle-mounted hydrogen supply system - Google Patents

A pipeline system for a vehicle-mounted hydrogen supply system Download PDF

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Publication number
CN112283575B
CN112283575B CN201910671729.4A CN201910671729A CN112283575B CN 112283575 B CN112283575 B CN 112283575B CN 201910671729 A CN201910671729 A CN 201910671729A CN 112283575 B CN112283575 B CN 112283575B
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China
Prior art keywords
valve
hydrogen
bottle
hydrogen supply
vehicle
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CN201910671729.4A
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CN112283575A (en
Inventor
于文俊
王东雨
乐煜
刘绍军
刘强
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Shanghai Sunwise Energy System Co ltd
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Shanghai Sunwise Energy System Co ltd
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Classifications

    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • 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
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • F17C2201/0109—Shape cylindrical with exteriorly curved end-piece
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • 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
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • 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
    • F17C2205/0329—Valves manually actuated
    • 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
    • F17C2205/0332—Safety valves or pressure relief 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
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/035—High pressure (>10 bar)
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • 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
    • F17C2250/04—Indicating or measuring of parameters as input values
    • 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
    • F17C2265/01—Purifying the fluid
    • F17C2265/012—Purifying the fluid by filtering
    • 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
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0184—Fuel cells
    • 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)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The invention relates to a vehicle-mounted hydrogen supply system pipeline system which comprises a hydrogen filling module, a hydrogen storage module and a hydrogen supply module, wherein the hydrogen filling module is connected with the hydrogen storage module through a hydrogen pipeline, the hydrogen storage module is connected with the hydrogen supply module through a hydrogen pipeline, the hydrogen supply module is connected with a fuel cell, the hydrogen storage module comprises a hydrogen storage bottle and a bottle valve assembly, the bottle valve assembly comprises a bottle valve arranged on the bottle mouth of the hydrogen storage bottle, a first check valve, a stop valve and an overflow valve which are integrated on the bottle valve and are sequentially connected in series between the bottle valve and the bottle mouth of the hydrogen storage bottle, the first check valve is connected with an electromagnetic valve in parallel, and the bottle valve is provided with an air inlet and an air outlet so as to realize the series connection of a plurality of hydrogen storage bottles. Compared with the prior art, the invention has the advantages of safety, reliability, simple flow, low cost, few leakage points and the like.

Description

Pipeline system of vehicle-mounted hydrogen supply system
Technical Field
The invention relates to the field of structural optimization of vehicle-mounted hydrogen supply systems, in particular to a pipeline system of a vehicle-mounted hydrogen supply system.
Background
In recent years, hydrogen fuel cell automobiles enter a rapid development stage, and a vehicle-mounted hydrogen supply system is used as a hydrogen storage and supply system of the hydrogen fuel cell automobiles, and the design of a pipeline of the vehicle-mounted hydrogen supply system is one of keys for guaranteeing safe and reliable running of the hydrogen fuel automobiles. Considering that the volume of hydrogen is very small and easy to leak, each connecting point of a pipeline on a vehicle-mounted hydrogen supply system has hidden danger of leakage no matter in cutting sleeve connection or threaded connection, especially, part of high-pressure pipelines are limited by arrangement environment and possibly have installation stress, and under the condition that a vehicle runs for a long time, the connecting point of the pipeline and a valve element is extremely easy to leak, so that the reduction of the connecting point of the pipeline as much as possible is beneficial to simplifying the pipeline and further improving the safety performance of the vehicle-mounted hydrogen supply system, and meanwhile, the current vehicle-mounted hydrogen supply system also generally has the problems of high production cost, complex pipeline flow and the like.
Chinese patent CN208703568U discloses a series connection's on-vehicle hydrogen supply system, relates to on-vehicle hydrogen supply system structure optimization field, including hydrogen bottle group, hydrogenation mouth, hydrogen supply device, connecting line and fixed frame, the bottleneck valve is installed to the hydrogen bottle bottleneck, is provided with air inlet and gas outlet on the bottleneck valve, realizes the series connection of a plurality of hydrogen bottles. However, the valve component for completing hydrogen flow control by matching with the bottle valve in the patent needs to be additionally installed, the number of connecting points is increased, the possible leakage points are more, the installation cost is increased, only one of two outlets of the bottle valve of the device is provided with an overflow valve, a pipeline of the other outlet cannot play a role in effective overflow when the pipeline breaks under extreme conditions, a certain potential safety hazard is caused, and the connecting points among valve elements in the system of the patent technology are still too many, so that the cost is reduced and the safety of the hydrogen system is further improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a vehicle-mounted hydrogen supply system pipeline system.
The aim of the invention can be achieved by the following technical scheme:
a vehicle-mounted hydrogen supply system pipeline system comprises a hydrogen filling module, a hydrogen storage module and a hydrogen supply module, wherein the hydrogen filling module is connected with the hydrogen storage module through a hydrogen pipeline, the hydrogen storage module is connected with the hydrogen supply module through a hydrogen pipeline, the hydrogen supply module is connected with a fuel cell, the hydrogen storage module comprises a hydrogen storage bottle and a bottle valve assembly, the bottle valve assembly comprises a bottle valve arranged on the bottle mouth of the hydrogen storage bottle, an overflow valve, a stop valve and a first one-way valve which are integrated on the bottle valve and are connected in series in sequence between the bottle valve and the bottle mouth of the hydrogen storage bottle, the first one-way valve is connected with an electromagnetic valve in parallel, and the bottle valve is provided with an air inlet and an air outlet to realize the series connection of a plurality of hydrogen storage modules.
Compared with the common pipeline of the vehicle-mounted hydrogen supply system, the more the number of the gas cylinders of the vehicle-mounted hydrogen supply system is, the more the number of the three-way pipes is, the valve elements are directly connected in series through the pipeline in the system pipeline arrangement scheme, hydrogen flows through the one-way valve, the first bottle valve, the second bottle valve, the third bottle valve, the filter and the first-stage pressure reducing valve to the battery reactor in sequence from the hydrogen filling nozzle, and any three-way pipe or multiple-way pipe does not exist in the whole hydrogen flow path, so that on one hand, possible leakage connection points of the pipeline are reduced to the greatest extent, the safety of the vehicle-mounted hydrogen supply system is improved, on the other hand, the pipeline is simplified on the premise that the functionality and the safety of the vehicle-mounted hydrogen supply system still meet requirements, the valves such as a pressure gauge, a filter of a filling module and the like are reduced, and the pipeline manufacturing installation and cost control are facilitated.
The hydrogen storage bottle is characterized in that a first overtemperature safety valve is further integrated on a bottle valve of the bottle valve assembly, and a tail valve of the hydrogen storage bottle is connected with a second overtemperature safety valve.
And the vent ports of the first overtemperature safety valve and the second overtemperature safety valve are connected with an emission protector.
And a pressure sensor interface is arranged on a bottle valve of the bottle valve assembly which is directly connected with the hydrogen filling module, and the pressure sensor interface is connected with a high-pressure sensor.
In the hydrogen storage module, two hydrogen inlet and outlet interfaces and one pressure sensor interface are arranged on a bottle valve, and valve elements such as a one-way valve, a stop valve, an electromagnetic valve, an overflow valve, a temperature sensor, a TPRD (super temperature safety valve) and the like are integrated; the bottle valve integrates the overflow valve, so the pipeline arrangement scheme can fully utilize two interfaces of the bottle valve to replace a tee joint, realize series connection among the bottle valves, respectively design TPRD (over-temperature safety valve) at the bottle mouth and the tail valve of the hydrogen storage bottle, and the vent ports of the TPRD (over-temperature safety valve) are connected by adopting a vent protector, thereby greatly simplifying a vent pipeline system and reducing the manufacturing and installation difficulty of pipelines and the material cost.
The hydrogen filling module comprises a filling nozzle fixed on the filling panel and a one-way valve connected with the filling nozzle in series.
The hydrogen filling module can be used for efficiently and stably filling the gas cylinder, in the filling module, the gas filling nozzle is fixed on the filling panel to ensure the operation stability during filling, and the one-way valve is arranged at the rear end of the gas filling nozzle to prevent the gas in the hydrogen storage cylinder from leaking outwards under the condition that the gas filling nozzle is damaged, and the service life of the gas filling nozzle is prolonged.
The hydrogen supply module comprises a filter connected with the hydrogen storage module and a primary pressure reducing valve assembly connected with the filter in series, wherein the primary pressure reducing valve assembly is connected with the fuel cell through a metal hose.
The first-stage pressure reducing valve assembly comprises a pressure reducing valve, a first outlet and a second outlet are arranged on the pressure reducing valve, the first outlet is connected with a manual discharge valve, and the second outlet is connected with the metal hose.
An unloading valve is integrated in the pressure reducing valve, an outlet of the unloading valve is connected with an emission protector, and a pressure sensor interface is integrated on the pressure reducing valve and is connected with a medium pressure sensor.
In the hydrogen supply module, the first-stage pressure reducing valve is provided with two outlets, so that the number of tee joints and adapter joints in a pipeline can be further reduced, possible leakage points are reduced, the first-stage pressure reducing valve is integrated with functions of an unloading valve, a pressure sensor interface and the like, the tee joints for installing a valve element on the pipeline are prevented from being generated, a filter is arranged in front of the pressure reducing valve, the pressure reducing valve and rear end parts of the pressure reducing valve can be effectively prevented from being polluted by impurities, and the purity of hydrogen in a galvanic pile is ensured. The rear outlet of the pressure reducing valve is connected with a emptying hand valve, so that a pipeline is emptied during maintenance, and the hand valve is screwed by a special matched wrench, so that the hand valve can be prevented from being unscrewed by misoperation of other people. The other outlet is directly connected with the galvanic pile after the pressure reducing valve, and the last section adopts a metal hose for transition, so that the shock resistance of a pipeline system is improved, and the installation of a pipeline is also facilitated.
And a bending part is arranged on the serial pipeline among the plurality of hydrogen storage bottles. And the design of bending the pipeline between the bottle valves improves the shock resistance.
The vehicle-mounted hydrogen supply system pipeline system is arranged in an environment which keeps airflow communication with the outside. Because the system of the invention has a hydrogen gas discharge port, the system of the invention is suitable for the condition that the vehicle-mounted hydrogen supply system is in an open environment which can keep gas communication with the outside all the time, such as the vehicle-mounted hydrogen supply system is arranged on the top of a carriage of an automobile.
Compared with the prior art, the invention has the following advantages:
(1) The pipeline flow in the pipeline arrangement scheme of the vehicle-mounted hydrogen supply system is simple and clear, a tee joint or a multi-way joint is not arranged, the hydrogen supply pipeline and the emptying pipeline are simplified to the greatest extent, the safety performance of the fuel cell automobile is further improved on the basis that the hydrogen supply requirement of the fuel cell automobile under various working conditions can be effectively ensured, the production cost is reduced, the installation and the production of the pipeline are facilitated, and the vehicle-mounted hydrogen supply system is suitable for most fuel cell automobiles;
(2) The system is provided with a one-way valve, a stop valve, an electromagnetic valve, an overflow valve and other parts to form a hydrogen storage and supply control system, so that the high-efficiency and safe hydrogen supply is realized, the hydrogen flow is easy to control, and the safety of the system is improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure, 1 is a hydrogen filling module, 11 is an air filling nozzle, 12 is a second one-way valve, 2 is a hydrogen storage module, 21 is a hydrogen storage bottle, 22 is a bottle valve assembly, 221 is a high-pressure sensor, 222 is a first one-way valve, 223 is a stop valve, 224 is an overflow valve, 225 is an electromagnetic valve, 226 is a first overtemperature safety valve, 23 is a second overtemperature safety valve, 24 is a first discharge protector, 25 is a second discharge protector, 3 is a hydrogen supply module, 31 is a filter, 32 is a first-stage pressure reducing valve assembly, 321 is a pressure reducing valve, 322 is a medium-pressure sensor, 323 is an unloading valve, 33 is a manual discharge valve, 34 is a third discharge protector, 35 is a metal hose, N1 is a hydrogen inlet, N2 is a vent, and N3 is a fuel cell removal port.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Examples
The utility model provides a on-vehicle hydrogen supply system pipe-line system, as shown in fig. 1, includes hydrogen filling module 1, hydrogen storage module 2, hydrogen supply module 3, and hydrogen filling module 1 passes through hydrogen pipe connection in hydrogen storage module 2, and hydrogen storage module 2 passes through hydrogen pipe connection in hydrogen supply module 3, and hydrogen supply module 3 connects in fuel cell.
The hydrogen filling module 1 comprises a filling nozzle 11 fixed on a filling panel, and a second one-way valve 12 connected with the filling nozzle 11 in series, wherein the filling nozzle 11 is connected with a hydrogen inlet N1, the filling nozzle 11 is fixed on the filling panel to ensure the operation stability during filling, the second one-way valve 12 is arranged at the rear end of the filling nozzle 11 to prevent gas from leaking outwards and prolong the service life of a gas receiving head under the condition that the filling nozzle is damaged, and the hydrogen filling module 1 in the embodiment can fill a gas cylinder efficiently and stably.
The hydrogen storage module 2 comprises a hydrogen storage bottle 21 and a bottle valve assembly 22, as shown in the structure in the broken line frame in fig. 1, the bottle valve assembly 22 comprises a bottle valve installed on the bottle mouth of the hydrogen storage bottle 21, and a first check valve 222, a stop valve 223 and an overflow valve 224 which are integrated on the bottle valve and are sequentially connected in series between the bottle valve and the bottle mouth of the hydrogen storage bottle 21, wherein the first check valve 222 is connected with an electromagnetic valve 225 in parallel, the bottle valve is further integrated with a first overtemperature safety valve 226 (TPRD), the first overtemperature safety valve 226 (TPRD) is connected with the bottle mouth of the hydrogen storage bottle 21, a second overtemperature safety valve 23 (TPRD) is connected with a tail valve of the hydrogen storage bottle 21, and the vent ports of the first overtemperature safety valve 226 (TPRD) and the second overtemperature safety valve 23 (TPRD) are respectively connected with a first discharge protector 24 and a second discharge protector 25, and the bottle valve of the embodiment is provided with an air inlet and an air outlet, so that the serial connection of the hydrogen storage modules 2 is realized. The bottle valve of the bottle valve assembly 22 directly connected to the hydrogen filling module 1 is provided with a pressure sensor interface, which is connected to the high pressure sensor 221.
In the hydrogen storage module 2, a bottle valve is integrated with a one-way valve, a stop valve, an electromagnetic valve, an overflow valve, a temperature sensor, a TPRD overtemperature safety valve and other valves, and is provided with two hydrogen inlet and outlet interfaces and a pressure sensor interface. Because the bottle valve integrates the overflow valve, the pipeline arrangement scheme can fully utilize two interfaces of the bottle valve to replace a tee joint, and serial connection among the bottle valves is realized. The TPRD vent ports of the bottle valve and the gas cylinder tail valve in the pipeline arrangement scheme are connected by adopting the discharge protector, so that a vent pipeline system is greatly simplified, and the pipeline manufacturing and mounting difficulty and the material cost are reduced.
The hydrogen supply module 3 comprises a filter 31 connected with the hydrogen storage module 2 and a primary pressure reducing valve assembly 32 connected with the filter 31 in series, wherein the primary pressure reducing valve assembly 32 is connected with the fuel cell through a metal hose 35, the primary pressure reducing valve assembly 32 comprises a pressure reducing valve 321, a first outlet and a second outlet are arranged on the pressure reducing valve 321, the first outlet is connected with a manual discharge valve 33, the outlet of the manual discharge valve 33 is a discharge port N2, the second outlet is connected with the metal hose 35, an unloading valve 323 is integrated inside the pressure reducing valve 321, the outlet of the unloading valve 323 is connected with a discharge protector, and a pressure sensor interface is integrated on the pressure reducing valve 321 and connected with a medium pressure sensor 322.
In the hydrogen supply module 3, the pressure reducing valve in the first-stage pressure reducing valve component also integrates the functions of an unloading valve, a pressure sensor interface and the like, is provided with two outlets, can further reduce the number of tee joints and adapter joints in a pipeline and reduce possible leakage points, and is provided with a filter in front of the pressure reducing valve, so that the pressure reducing valve and rear end parts thereof can be effectively prevented from being polluted by impurities, and the purity of hydrogen in a galvanic pile is ensured. The rear outlet of the pressure reducing valve is connected with a emptying hand valve, so that a pipeline is emptied during maintenance, and the hand valve is screwed by a special matched wrench, so that the hand valve can be prevented from being unscrewed by misoperation of other people. The fuel cell removing port N3 behind the pressure reducing valve is directly connected with the fuel cell stack, and the last section adopts a metal hose 35 for transition, so that the shock resistance of a pipeline system is improved, and the installation of a pipeline is also facilitated.
In this embodiment, the serial pipelines between the hydrogen storage bottles 21 are provided with bends, so as to improve the shock resistance.
The bottle valve with integrated functions and the pressure reducing valve are available on the market, for example, the bottle valve can be exemplified by HTV-35 series bottle valve of Italy OMB company, and the pressure reducing valve can be exemplified by M-H35 series pressure reducing valve of Italy Metatron company.
Compared with the system in the chinese patent CN208703568U, the bottle valve selected in the system in this embodiment needs to be built with an overflow valve, compared with the GFI bottle valve in the prior art CN208703568U without the overflow valve, and after the two outlets of each bottle valve are connected in series, the hydrogen pipeline is led to, but the overflow valve is only installed at one outlet, and the overflow valve is not installed at the other outlet, so that if the pipeline of the outlet without the overflow valve is broken, the uncontrolled release of hydrogen cannot be effectively prevented, resulting in potential safety hazard. In the prior art, the tee joint adopting the overflow valve, the unloading valve and the junction emptying needle valve is additionally installed, so that the connection point is increased, the production cost is increased, and the connection of the pressure reducing valve, the unloading valve and the medium pressure sensor is provided with a transition adapter, so that the leakage point is increased; in the system of the embodiment, the connecting points and the installation workload are reduced by integrating a plurality of functional parts on one valve part as much as possible, the system comprises a bottle valve built-in overflow valve and a pressure reducing valve built-in unloading valve, and simultaneously, two outlets and a medium pressure sensor interface are also provided, wherein one outlet is connected with a galvanic pile, and the other outlet is connected with an emptying valve. The system of the embodiment reduces unnecessary valve elements such as a pressure gauge, a filter of a filling module and the like on the premise of ensuring the functionality and safety requirements of the vehicle-mounted hydrogen supply system, further reduces leakage points and production cost, and the emptying ports of the bottle valve, the tail valve and the unloading valve in the system of the embodiment adopt an emptying protector mode, so that an emptying pipeline is greatly simplified, the cost and the installation workload are reduced, the emptying hand valve can be operated by a special spanner, misoperation of personnel is avoided, and the safety is improved.
The pipeline flow in the pipeline arrangement scheme of the vehicle-mounted hydrogen supply system is simple and clear, a tee joint or a multi-way joint is not arranged, the hydrogen supply pipeline and the emptying pipeline are simplified to the greatest extent, the safety performance of the vehicle-mounted hydrogen supply system is further improved on the basis that the hydrogen supply requirement of the fuel cell vehicle under various working conditions can be effectively ensured, the production cost is reduced, the installation and production of the pipeline are facilitated, and the vehicle-mounted hydrogen supply system is suitable for most fuel cell vehicles. In a word, the system of this embodiment has advantages such as little, the installation work load is few, with low costs, security height of electric leakage.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.

Claims (10)

1.一种车载供氢系统管路系统，包括氢气加注模块(1)、氢气存储模块(2)、氢气供应模块(3)，所述氢气加注模块(1)通过氢气管路连接于所述氢气存储模块(2)，所述氢气存储模块(2)通过氢气管路连接于所述氢气供应模块(3)，所述氢气供应模块(3)连接于燃料电池，所述氢气存储模块(2)包括储氢瓶(21)和瓶阀组件(22)；1. A pipeline system of a vehicle-mounted hydrogen supply system, comprising a hydrogen filling module (1), a hydrogen storage module (2), and a hydrogen supply module (3), wherein the hydrogen filling module (1) is connected to the hydrogen storage module (2) via a hydrogen pipeline, the hydrogen storage module (2) is connected to the hydrogen supply module (3) via a hydrogen pipeline, the hydrogen supply module (3) is connected to a fuel cell, and the hydrogen storage module (2) comprises a hydrogen storage bottle (21) and a bottle valve assembly (22); 其特征在于，It is characterized in that 所述瓶阀组件(22)包括安装于所述储氢瓶(21)瓶口的瓶阀，以及集成于所述瓶阀上、并且在所述瓶阀和储氢瓶(21)瓶口之间的依次串联连接的第一单向阀(222)、截止阀(223)和溢流阀(224)，所述第一单向阀(222)并联连接电磁阀(225)；所述瓶阀上设有进气口和出气口，实现若干个氢气存储模块(2)的串联连接。The bottle valve assembly (22) comprises a bottle valve installed at the bottle mouth of the hydrogen storage bottle (21), and a first one-way valve (222), a stop valve (223) and an overflow valve (224) which are integrated on the bottle valve and connected in series in sequence between the bottle valve and the bottle mouth of the hydrogen storage bottle (21), wherein the first one-way valve (222) is connected in parallel to a solenoid valve (225); an air inlet and an air outlet are provided on the bottle valve to realize the series connection of a plurality of hydrogen storage modules (2). 2.根据权利要求1所述的一种车载供氢系统管路系统，其特征在于，所述瓶阀组件(22)的瓶阀上还集成了第一超温安全阀(226)，所述储氢瓶(21)的尾阀连接有第二超温安全阀(23)。2. A vehicle-mounted hydrogen supply system piping system according to claim 1, characterized in that a first over-temperature safety valve (226) is also integrated on the bottle valve of the bottle valve assembly (22), and the tail valve of the hydrogen storage bottle (21) is connected to a second over-temperature safety valve (23). 3.根据权利要求2所述的一种车载供氢系统管路系统，其特征在于，所述第一超温安全阀(226)和第二超温安全阀(23)的放空口均连接有排放保护器。3. A vehicle-mounted hydrogen supply system piping system according to claim 2, characterized in that the vent ports of the first over-temperature safety valve (226) and the second over-temperature safety valve (23) are both connected to emission protectors. 4.根据权利要求1所述的一种车载供氢系统管路系统，其特征在于，与所述氢气加注模块(1)直接连接的瓶阀组件(22)的瓶阀上设有压力传感器接口，该压力传感器接口与高压压力传感器(221)连接。4. A vehicle-mounted hydrogen supply system piping system according to claim 1, characterized in that a pressure sensor interface is provided on the bottle valve of the bottle valve assembly (22) directly connected to the hydrogen filling module (1), and the pressure sensor interface is connected to the high-pressure pressure sensor (221). 5.根据权利要求1所述的一种车载供氢系统管路系统，其特征在于，所述氢气加注模块(1)包括固定于加注面板上的加气嘴(11)、与所述加气嘴(11)串联连接的第二单向阀(12)。5. The on-vehicle hydrogen supply system piping system according to claim 1 is characterized in that the hydrogen filling module (1) comprises a filling nozzle (11) fixed on a filling panel and a second one-way valve (12) connected in series with the filling nozzle (11). 6.根据权利要求1所述的一种车载供氢系统管路系统，其特征在于，所述氢气供应模块(3)包括与所述氢气存储模块(2)连接的过滤器(31)、与所述过滤器(31)串联连接的一级减压阀组件(32)，该一级减压阀组件(32)通过金属软管(35)与所述燃料电池连接。6. A vehicle-mounted hydrogen supply system piping system according to claim 1, characterized in that the hydrogen supply module (3) comprises a filter (31) connected to the hydrogen storage module (2), and a first-level pressure reducing valve assembly (32) connected in series with the filter (31), and the first-level pressure reducing valve assembly (32) is connected to the fuel cell through a metal hose (35). 7.根据权利要求6所述的一种车载供氢系统管路系统，其特征在于，所述一级减压阀组件(32)包括减压阀(321)、该减压阀(321)上设有第一出口和第二出口，所述第一出口与手动排放阀(33)连接，所述第二出口与所述金属软管(35)连接。7. A vehicle-mounted hydrogen supply system piping system according to claim 6, characterized in that the first-stage pressure reducing valve assembly (32) comprises a pressure reducing valve (321), the pressure reducing valve (321) is provided with a first outlet and a second outlet, the first outlet is connected to a manual drain valve (33), and the second outlet is connected to the metal hose (35). 8.根据权利要求7所述的一种车载供氢系统管路系统，其特征在于，所述减压阀(321)内部集成卸荷阀(323)，并且所述卸荷阀(323)的出口连接有排放保护器；所述减压阀(321)上集成有压力传感器接口，该压力传感器接口与中压压力传感器(322)连接。8. A vehicle-mounted hydrogen supply system piping system according to claim 7, characterized in that the pressure reducing valve (321) has an integrated unloading valve (323), and the outlet of the unloading valve (323) is connected to a discharge protector; the pressure reducing valve (321) has an integrated pressure sensor interface, and the pressure sensor interface is connected to a medium pressure sensor (322). 9.根据权利要求1所述的一种车载供氢系统管路系统，其特征在于，设于所述若干个储氢瓶(21)之间的串联管路上设有弯折。9. The on-vehicle hydrogen supply system pipeline system according to claim 1 is characterized in that bends are provided on the series pipelines arranged between the plurality of hydrogen storage bottles (21). 10.根据权利要求1所述的一种车载供氢系统管路系统，其特征在于，该车载供氢系统管路系统安装于与外界保持气流流通的环境中。10. The on-vehicle hydrogen supply system piping system according to claim 1 is characterized in that the on-vehicle hydrogen supply system piping system is installed in an environment that maintains airflow with the outside world.
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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113028278A (en) * 2021-03-31 2021-06-25 黄冈格罗夫氢能汽车有限公司 Hydrogen energy light truck high-pressure hydrogen storage system
CN113113638B (en) * 2021-03-31 2022-08-19 东风汽车集团股份有限公司 High-pressure hydrogen supply system of fuel cell automobile
CN115117393A (en) * 2022-08-01 2022-09-27 上海捷氢科技股份有限公司 Hydrogen supply system for forklift
CN115441016A (en) * 2022-10-09 2022-12-06 中车青岛四方机车车辆股份有限公司 A rail vehicle, a fuel cell system for a rail vehicle and a control method thereof
CN116658813B (en) * 2023-04-17 2024-04-16 东风汽车集团股份有限公司 Medium storage system and vehicle
CN116885233A (en) * 2023-07-18 2023-10-13 东风汽车集团股份有限公司 Common rail device, medium storage system and vehicle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210532062U (en) * 2019-07-24 2020-05-15 上海舜华新能源系统有限公司 A vehicle-mounted hydrogen supply system pipeline system

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2874247B1 (en) * 2004-08-12 2007-03-16 Air Liquide GAS STORAGE SYSTEM, METHOD OF IMPLEMENTATION AND VEHICLE INCORPORATING SUCH A SYSTEM
JP4744285B2 (en) * 2005-12-19 2011-08-10 本田技研工業株式会社 Hydrogen vehicle gas use and supply system
ATE450401T1 (en) * 2005-12-21 2009-12-15 Honda Motor Co Ltd HYDROGEN GAS SUPPLY AND REFUELING SYSTEM FOR VEHICLES
CN101140051A (en) * 2007-09-29 2008-03-12 徐焕恩 High-pressure hydrogen storing bottle combined valve
CN102748585A (en) * 2012-06-27 2012-10-24 同济大学 Fuel cell standby power high pressure hydrogen supply system
CN203036254U (en) * 2012-12-19 2013-07-03 上海舜华新能源系统有限公司 Online hydrogen supply system of emergency dynamo van based on fuel cell
JP6951196B2 (en) * 2016-11-11 2021-10-20 Ｅｎｅｏｓ株式会社 Hydrogen fuel supply method and hydrogen supply system
JP6683109B2 (en) * 2016-11-21 2020-04-15 トヨタ自動車株式会社 Hydrogen supply system
CN106784928A (en) * 2017-01-05 2017-05-31 张家港市华地机械装备有限公司 Vehicle-mounted hydrogen-feeding system
CN207268376U (en) * 2017-09-12 2018-04-24 张家港富瑞氢能装备有限公司 An on-board hydrogen system for a fuel cell vehicle
CN109931497A (en) * 2017-12-15 2019-06-25 郑州宇通客车股份有限公司 Hydrogen storage vessel, hydrogen storage vessel valve and fuel cell car

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN210532062U (en) * 2019-07-24 2020-05-15 上海舜华新能源系统有限公司 A vehicle-mounted hydrogen supply system pipeline system

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