CN114440130B - Hydrogen bottle mouth valve group with temperature control valve and control valve group opening and closing method thereof - Google Patents

Hydrogen bottle mouth valve group with temperature control valve and control valve group opening and closing method thereof Download PDF

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Publication number
CN114440130B
CN114440130B CN202210116642.2A CN202210116642A CN114440130B CN 114440130 B CN114440130 B CN 114440130B CN 202210116642 A CN202210116642 A CN 202210116642A CN 114440130 B CN114440130 B CN 114440130B
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valve
temperature
hydrogen
discharge port
inlet
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CN114440130A (en
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钱锦远
于龙杰
徐毅翔
盛侃
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Zhejiang University ZJU
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Zhejiang University ZJU
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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
    • 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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • 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
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
    • 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
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
    • F16K37/0091—For recording or indicating the functioning of a valve in combination with test equipment by measuring fluid parameters
    • 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
    • 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
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0439—Temperature
    • 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
    • F17C2250/0631—Temperature
    • 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
    • F17C2250/07—Actions triggered by measured parameters
    • F17C2250/072—Action when predefined value is reached
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/45—Hydrogen technologies in production processes

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Fuel Cell (AREA)
  • Temperature-Responsive Valves (AREA)

Abstract

The invention discloses a hydrogen bottle mouth valve group with a temperature control valve and a control valve group opening and closing method thereof. The invention designs a hydrogen bottle mouth valve group with a temperature control valve and a method for controlling the opening and closing of the valve group, so that when the hydrogen bottle has an overtemperature phenomenon in the inflation process, the bottle mouth valve group can quickly and stably respond to pressure relief, and can be closed in time after the temperature returns to normal, thereby avoiding the waste of gas.

Description

Hydrogen bottle mouth valve group with temperature control valve and control valve group opening and closing method thereof
Technical Field
The invention belongs to the field of valve control, and particularly relates to a hydrogen bottle mouth valve group with a temperature control valve and a control valve group opening and closing method thereof.
Background
The hydrogen is used as an ideal energy carrier, has the characteristics of high energy density, high conversion efficiency, rich reserves, wide application range and the like, and the product obtained after the electrochemical reaction is water, is clean and pollution-free and is considered as the cleanest energy. The development of hydrogen energy and hydrogen fuel cells has become a national strategy of major automobile producing countries in the world, and is also the key basic research content of the compendium of the long-term scientific and technical development planning in China. The hydrogen cylinder mouth valve is a key part in the hydrogen storage technology of the high-pressure hydrogen storage cylinder and is used for ensuring the safety and normal gas charging/supplying of the high-pressure hydrogen storage cylinder. The hydrogen cylinder valve is generally formed by connecting a plurality of valves in series or in parallel, and is also called as a hydrogen cylinder valve group, and the hot pressure relief device is an extremely important part of the valve group. Because hydrogen is flammable and explosive in air, the temperature of hydrogen in the process of charging and discharging the hydrogen cylinder needs to be strictly controlled. In the current domestic hydrogen bottle mouth valve group, the hot pressure relief device is generally TRPD, however, the device has many defects of unstable structure, slow response speed, non-reusability, etc., therefore, it is urgently needed to develop a hot pressure relief device which has stable structure, can rapidly and stably respond to the hydrogen flow over-temperature and can be reused.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a hydrogen bottle mouth valve group with a temperature control valve and a method for controlling the opening and closing of the valve group.
The invention adopts the following specific technical scheme:
the invention provides a hydrogen bottle mouth valve group with a temperature control valve and a method for controlling the opening and closing of the valve group, aiming at the problems of the existing hydrogen bottle mouth valve group hot pressure relief device, the valve group and the method can ensure the stable work of the valve group, can quickly and stably respond to the hydrogen flow overtemperature, and can be repeatedly used.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the invention provides a hydrogen bottle mouth valve group with a temperature control valve, which comprises a flow limiting valve, a filter, an electromagnetic valve, a manual stop valve, a temperature control valve and a pressure reducing valve which are sequentially connected, wherein the temperature control valve comprises an actuating mechanism, a valve rod, a valve body, a main valve plug and a valve seat; the bottom of the valve body is connected with a valve seat provided with an inlet, the side wall of the valve body is respectively provided with an outlet and a discharge port, and the inlet, the outlet and the discharge port are communicated with the inner cavity of the valve body; the actuating mechanism positioned outside the valve body is connected with a main valve plug positioned in the inner cavity of the valve body through a valve rod, and the main valve plug can seal the inlet; a discharge port valve plug capable of sealing the discharge port is arranged on the side surface of the main valve plug, and a temperature-sensitive element capable of measuring the temperature of the hydrogen flow and feeding back the hydrogen flow to the actuating mechanism is arranged on one side close to the outlet; the executing mechanism can drive the main valve plug to seal the discharge port or the inlet by controlling the up-and-down movement of the valve rod according to the feedback result of the temperature-sensitive element, so that the outlet is communicated with the inlet or the outlet is communicated with the discharge port.
Preferably, the vent is open to the atmosphere.
Preferably, the discharge port valve plug is located on the ring surface side of the main valve plug, and one side close to the discharge port is of a spherical structure for closing the discharge port.
Preferably, the outlet and the discharge port are respectively positioned on two opposite sides of the valve body and are positioned on the same horizontal plane.
Furthermore, the discharge port valve plug and the temperature-sensitive element are respectively positioned on two opposite sides of the main valve plug and are positioned on the same horizontal plane.
Preferably, the joint of the valve rod and the valve body is closed, and the joint of the valve seat and the valve body is closed.
Preferably, the valve stem, the main valve plug, the valve seat and the inlet are arranged coaxially.
In a second aspect, the invention provides a control valve group opening and closing method based on any one of the hydrogen bottle opening valve groups in the first aspect, which specifically comprises the following steps:
under normal working conditions, the main valve plug is positioned at the highest stroke position, the discharge port is completely sealed by the discharge port valve plug at the moment, the inlet is communicated with the outlet, and the hydrogen cylinder can be inflated or deflated normally; during the normal inflation or deflation process of the hydrogen cylinder, the temperature of the hydrogen flow at the outlet is monitored in real time by using a temperature-sensitive element and fed back to the actuating mechanism;
when the temperature-sensitive element monitors that the temperature of the hydrogen flow reaches a limit value, the actuating mechanism controls the valve rod to drive the main valve plug to move downwards to the valve seat, so that the inlet is completely closed, the discharge port is completely opened, and the hydrogen cylinder begins to discharge hydrogen to the atmosphere; when the temperature-sensitive element detects that the temperature of the hydrogen flow is reduced to the safe temperature, the actuating mechanism controls the valve rod to drive the main valve plug to move upwards to the highest stroke position, the inlet is opened, the discharge port is completely closed by the discharge port valve plug, and the hydrogen cylinder is normally inflated or deflated.
Compared with the prior art, the invention has the following beneficial effects:
1) The hydrogen bottle mouth valve group structure can monitor the temperature change condition of hydrogen at the bottle mouth of the hydrogen storage bottle in real time, and can realize the monitoring function in the processes of gas filling and gas supply.
2) The structure of the hydrogen bottle mouth valve group ensures that the bottle mouth valve group can quickly and stably respond to pressure relief when the hydrogen bottle has overtemperature in the inflation process, and can be closed in time after the temperature returns to normal, thereby avoiding the waste of gas.
3) The composition of the hydrogen bottle mouth valve group is different from the widely used hydrogen bottle mouth valve group at present, and the hydrogen bottle mouth valve group abandons a TRPD hot pressure relief device and is changed into a temperature control valve structure with more stable structure and more sensitive control. The severe defects of easy damage and low response speed of built-in glass bubbles or fusible metals in the TRPD device are avoided.
Drawings
FIG. 1 is a schematic structural view of a hydrogen port valve set in the present invention;
FIG. 2 is a schematic structural view (a) and a sectional view (b) of a thermo-valve in the present invention;
FIG. 3 is a schematic structural view (a) and a sectional view (b) of a thermostatic valve body in the present invention;
FIG. 4 is a schematic view of the coupling arrangement of the plug, stem and actuator of the thermostatic valve of the present invention;
the reference numbers in the figures are: the automatic control valve comprises a flow limiting valve 1, a filter 2, an electromagnetic valve 3, a manual stop valve 4, a temperature control valve 5, a pressure reducing valve 6, an actuating mechanism 7, a valve rod 8, a valve body 9, an inlet 9-1, an outlet 9-2, a discharge port 9-3, a main valve plug 10, a discharge port valve plug 10-1, a temperature sensitive element 10-2 and a valve seat 11.
Detailed Description
The invention will be further elucidated and described with reference to the drawings and the detailed description. The technical features of the embodiments of the present invention can be combined correspondingly without mutual conflict.
As shown in fig. 1, the hydrogen bottle mouth valve set with the temperature control valve provided by the invention mainly comprises a flow limiting valve 1, a filter 2, an electromagnetic valve 3, a manual stop valve 4, a temperature control valve 5 and a pressure reducing valve 6 (shown by a dotted line frame in fig. 1). Wherein, the flow limiting valve 1 is used for controlling the flow rate of the inlet hydrogen; the electromagnetic valve 3 has the function of opening and closing and controls the on-off of the air supply pipeline in the bottle mouth valve; the manual stop valve 4 is used for manually controlling the on-off of the gas path; the pressure reducing valve 6 is used to reduce the pressure of hydrogen gas entering the fuel cell to a set value. In the process of filling the hydrogen storage cylinder, firstly, impurities of hydrogen are removed through a filter 2, then, the hydrogen enters a temperature control valve 5 through a flow limiting valve 1, an electromagnetic valve 3 and a manual stop valve 4, and after the temperature control valve 5 judges whether the hydrogen temperature is below a set value or not, hydrogen flows enter the hydrogen storage cylinder. When the hydrogen cylinder supplies power to the fuel cell, hydrogen sequentially passes through the temperature control valve 5, the manual stop valve 4, the electromagnetic valve 3, the flow limiting valve 1 and the filter 2, is decompressed through the decompression valve 6 and then enters the fuel electromagnetic valve. . The TRPD hot pressure relief device in the hydrogen bottle mouth valve group which is commonly used at present is abandoned, the temperature control valve which is more stable in structure and more sensitive in control is replaced, and the serious defects that when the TRPD device is used, a built-in glass bubble or fusible metal is easy to damage and slow in response speed are avoided.
As shown in fig. 2, a specific structure of the thermo valve 5 is shown, and the thermo valve 5 is mainly used for controlling pressure relief when the valve block is over-temperature and normal circulation of hydrogen when the valve block is at normal temperature. The thermostatic valve 5 comprises an actuator 7, a valve stem 8, a valve body 9, a main valve plug 10 and a valve seat 11. The bottom of the valve body 9 is connected with a valve seat 11, and the joint of the valve body 9 and the valve seat 11 is closed. The valve seat 11 is provided with an inlet 9-1, and the inlet 9-1 can be communicated with the inner cavity of the valve body 9. The side wall of the valve body 9 is respectively provided with an outlet 9-2 and a discharge port 9-3, and the outlet 9-2 and the discharge port 9-3 are also respectively communicated with the inner cavity of the valve body 9, as shown in fig. 3. A main valve plug 10 is arranged in an inner cavity of the valve body 9, the main valve plug 10 can seal a bottom inlet 9-1, an actuating mechanism 7 positioned outside the valve body 9 is connected with the main valve plug 10 through a valve rod 8, and the joint of the valve rod 8 and the valve body 9 is sealed.
As shown in fig. 4, a discharge port valve plug 10-1 and a temperature sensitive element 10-2 are respectively arranged on the side surface of the main valve plug 10, the discharge port valve plug is used for controlling the opening and closing of the discharge port, the discharge port valve plug strictly closes the discharge port under the normal inflation and deflation conditions of the hydrogen cylinder, and when the temperature reaches a limit value, the valve plug moves downwards to close the inlet and open the discharge port; the temperature-sensitive element monitors the temperature of the hydrogen flow in real time and feeds the temperature back to the actuating mechanism.
The discharge port valve plug 10-1 is arranged at one side close to the discharge port 9-3 and can seal the discharge port 9-3. In practical application, the discharge port 9-3 is directly communicated with the atmosphere, the discharge port valve plug 10-1 is positioned on the annular surface side of the main valve plug 10, the main body part is a cuboid, the outer surface is spherical and matched with the inner side of the discharge port 9-3, and the discharge port 9-3 can be sealed. When the temperature of the circulated hydrogen reaches a limit value, the discharge port 9-3 is opened for rapidly discharging the hydrogen in the hydrogen cylinder and reducing the pressure in the cylinder. The temperature-sensitive element 10-2 is arranged on one side close to the outlet 9-2, and can measure the temperature of the hydrogen flow and feed back the temperature to the actuating mechanism 7. In practical application, the inlet 9-1 and the outlet 9-2 are passages for normal inflation or deflation of the hydrogen cylinders. When the hydrogen cylinder is inflated, hydrogen flows from the inlet to the outlet; when the hydrogen cylinders are deflated, hydrogen flows from the outlet to the inlet.
The actuator 7 can drive the main valve plug 10 to seal the discharge port 9-3 or the inlet 9-1 by controlling the up-and-down movement of the valve rod 8 according to the feedback result of the temperature sensitive element 10-2, so that the outlet 9-2 is communicated with the inlet 9-1 or the outlet 9-2 is communicated with the discharge port 9-3. Under the condition of normal temperature, the discharge port is closed, and hydrogen flows normally between the inlet and the outlet; when the temperature of the hydrogen flow reaches the limit value, the inlet is closed, and the hydrogen flow flows to the discharge port from the outlet, so that the hydrogen cylinder is quickly decompressed.
In practical application, the outlet 9-2 and the release port 9-3 may be disposed on two opposite sides of the valve body 9 respectively, and the two are on the same horizontal plane, and correspondingly, the release port valve plug 10-1 and the temperature sensitive element 10-2 should be disposed on two opposite sides of the main valve plug 10 respectively and on the same horizontal plane. The valve stem 8, main valve plug 10, valve seat 11 and inlet 9-1 may be coaxially arranged.
The control valve group opening and closing method using the hydrogen bottle mouth valve group comprises the following specific steps:
under normal working conditions, the main valve plug 10 is located at the highest stroke position, the discharge port 9-3 is completely sealed by the discharge port valve plug 10-1 at the moment, the inlet 9-1 is communicated with the outlet 9-2, and the hydrogen cylinder can be inflated or deflated normally. During the normal inflation or deflation process of the hydrogen cylinder, the temperature of the hydrogen flow at the outlet 9-2 is monitored in real time by using the temperature sensitive element 10-2 and fed back to the actuating mechanism 7.
When the temperature-sensitive element 10-2 monitors that the temperature of the hydrogen flow reaches a limit value, the actuating mechanism 7 controls the valve rod 8 to drive the main valve plug 10 to move downwards to the valve seat 11, so that the inlet 9-1 is completely closed, the discharge port 9-3 is completely opened, and the hydrogen bottle begins to discharge hydrogen to the atmosphere. When the temperature-sensitive element 10-2 detects that the temperature of the hydrogen flow is reduced to the safe temperature, the actuator 7 controls the valve rod 8 to drive the main valve plug 10 to move upwards at the highest stroke, the inlet 9-1 is opened, the discharge port valve plug 10-1 completely seals the discharge port 9-3, and the hydrogen cylinder is inflated or deflated normally.
The above-described embodiments are merely preferred embodiments of the present invention, and are not intended to limit the present invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical scheme obtained by adopting the mode of equivalent replacement or equivalent transformation is within the protection scope of the invention.

Claims (7)

1. The opening and closing method of the hydrogen bottle mouth valve group with the temperature control valve is characterized in that the hydrogen bottle mouth valve group with the temperature control valve comprises a flow limiting valve (1), a filter (2), an electromagnetic valve (3), a manual stop valve (4), a temperature control valve (5) and a pressure reducing valve (6) which are sequentially connected, wherein the temperature control valve (5) comprises an actuating mechanism (7), a valve rod (8), a valve body (9), a main valve plug (10) and a valve seat (11); the bottom of the valve body (9) is connected with a valve seat (11) provided with an inlet (9-1), the side wall of the valve body is provided with an outlet (9-2) and a discharge port (9-3), and the inlet (9-1), the outlet (9-2) and the discharge port (9-3) are communicated with the inner cavity of the valve body (9); an actuating mechanism (7) positioned outside the valve body (9) is connected with a main valve plug (10) positioned in the inner cavity of the valve body (9) through a valve rod (8), and the main valve plug (10) can seal the inlet (9-1); a discharge port valve plug (10-1) capable of sealing the discharge port (9-3) is arranged on the side surface of the main valve plug (10), and a temperature-sensitive element (10-2) capable of measuring the temperature of the hydrogen flow and feeding back to the actuating mechanism (7) is arranged on one side close to the outlet (9-2); the execution mechanism (7) can drive the main valve plug (10) to seal the discharge port (9-3) or the inlet (9-1) by controlling the up-and-down movement of the valve rod (8) according to the feedback result of the temperature-sensitive element (10-2), so that the outlet (9-2) is communicated with the inlet (9-1) or the outlet (9-2) is communicated with the discharge port (9-3);
the opening and closing method comprises the following specific steps:
under normal working conditions, the main valve plug (10) is positioned at the highest stroke position, the discharge port valve plug (10-1) completely seals the discharge port (9-3), the inlet (9-1) is communicated with the outlet (9-2), and the hydrogen cylinder can be inflated or deflated normally; in the normal inflation or deflation process of the hydrogen cylinder, the temperature of the hydrogen flow at the outlet (9-2) is monitored in real time by using the temperature sensitive element (10-2) and fed back to the actuating mechanism (7);
when the temperature-sensitive element (10-2) monitors that the temperature of the hydrogen flow reaches a limit value, the actuating mechanism (7) controls the valve rod (8) to drive the main valve plug (10) to move downwards to the valve seat (11), so that the inlet (9-1) is completely closed, the discharge port (9-3) is completely opened, and the hydrogen bottle starts to discharge hydrogen to the atmosphere; when the temperature-sensitive element (10-2) detects that the temperature of the hydrogen flow is reduced to the safe temperature, the execution mechanism (7) controls the valve rod (8) to drive the main valve plug (10) to move upwards to the highest stroke position, the inlet (9-1) is opened, the discharge port valve plug (10-1) completely seals the discharge port (9-3), and the hydrogen cylinder is normally inflated or deflated.
2. Opening and closing method according to claim 1, characterized in that the vent (9-3) is directly connected to the atmosphere.
3. Opening and closing method according to claim 1, characterized in that the vent valve plug (10-1) is located on the ring surface side of the main valve plug (10), and the side close to the vent (9-3) is a spherical structure for closing the vent (9-3).
4. Opening and closing method according to claim 1, characterized in that the outlet (9-2) and the discharge opening (9-3) are located on opposite sides of the valve body (9) and on the same horizontal plane.
5. The opening and closing method according to claim 4, wherein the vent valve plug (10-1) and the temperature sensitive element (10-2) are respectively located on two opposite sides of the main valve plug (10) and are located on the same horizontal plane.
6. Opening and closing method according to claim 1, characterized in that the joint of the valve stem (8) and the valve body (9) is closed and the joint of the valve seat (11) and the valve body (9) is closed.
7. Method of opening and closing according to claim 1, characterized in that the stem (8), the main plug (10), the seat (11) and the inlet (9-1) are arranged coaxially.
CN202210116642.2A 2022-02-07 2022-02-07 Hydrogen bottle mouth valve group with temperature control valve and control valve group opening and closing method thereof Active CN114440130B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210116642.2A CN114440130B (en) 2022-02-07 2022-02-07 Hydrogen bottle mouth valve group with temperature control valve and control valve group opening and closing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210116642.2A CN114440130B (en) 2022-02-07 2022-02-07 Hydrogen bottle mouth valve group with temperature control valve and control valve group opening and closing method thereof

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CN101178126A (en) * 2006-11-07 2008-05-14 北京菁华资源科技有限公司 Self-temperature controlled valve
CN202118322U (en) * 2011-06-16 2012-01-18 浙江康泉电器有限公司 Pressure-relief water-break type safety valve
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CN113137569A (en) * 2021-04-25 2021-07-20 杭州春江阀门有限公司 Vehicle-mounted ultrahigh-pressure hydrogen storage cylinder combination valve
CN113503467B (en) * 2021-07-08 2023-07-25 亚普汽车部件（开封）有限公司 High-pressure gas cylinder valve for vehicle

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