CN220249664U - Metal is combination valve and hydrogen storage system for hydrogen storage - Google Patents

Abstract

The embodiment of the application relates to the technical field of hydrogen energy utilization and discloses a combination valve for metal hydrogen storage and a hydrogen storage system. The combined valve for metal hydrogen storage is used for connecting a first gas cylinder and a second gas cylinder which are sequentially distributed along the gas supply direction in the hydrogen storage system, and comprises a valve body, a stop valve, a one-way valve, a TPRD pressure release valve and a filter; the valve body is provided with a first channel and a second channel, both ends of which penetrate through the valve body, and a third channel, one end of which penetrates through the valve body, and the other end of which is communicated with the first channel and the second channel; the stop valve is arranged at one end of the first channel and used for controlling the connection/disconnection between the other end of the first channel and the third channel, and the other end of the first channel is used for being connected with the second gas cylinder; the check valve is arranged at one end of the second channel, and the inlet end of the check valve is exposed out of the second channel and is used for being connected with an air source. The metal combination valve for hydrogen storage and the hydrogen storage system provided by the embodiment of the application can adapt to the control requirement of the additionally added gas cylinder in the hydrogen storage system.

Description

Metal is combination valve and hydrogen storage system for hydrogen storage

Technical Field

The embodiment of the application relates to the technical field of hydrogen energy utilization, in particular to a combination valve for metal hydrogen storage and a hydrogen storage system.

Background

Because of the great use of fossil fuels and other energy sources, the environment in which humans live is being severely affected, and new energy sources are continually entering into the field of view of people. In the process of using new energy sources such as wind energy, solar energy and the like, the cleanliness of energy sources is realized, and meanwhile, the energy supply channel is enriched. Among them, hydrogen energy is being greatly developed due to its pollution-free characteristics in the use process.

In the process of utilizing hydrogen energy, a hydrogen storage system is needed to realize the storage of hydrogen. In a hydrogen supply system using hydrogen as a fuel, hydrogen is generally stored in a gas cylinder, which is generally made of a metal having high strength. Hydrogen is compressed to a high pressure state, also known as high pressure hydrogen storage, prior to storage in a cylinder.

Unlike high-pressure hydrogen storage, solid-state hydrogen storage technology stores hydrogen in a solid material by physical adsorption and chemical adsorption of hydrogen by a hydrogen storage material, and can release hydrogen under certain conditions. The hydrogen storage material is used for storing hydrogen, and has the characteristics of large hydrogen storage amount and low energy consumption.

The valve is used as an important part in the hydrogen storage system, and determines the safety in the hydrogen energy utilization process to a certain extent. In the hydrogen storage system, a plurality of valves for realizing different functions are often required to be designed to adapt to the control requirements in the hydrogen circulation operation process. In particular, as the amount of hydrogen stored in a hydrogen storage system increases, different valves need to be designed for different cylinders, and how to adapt the valve components to the control requirements of the additional cylinders in the hydrogen storage system is an important problem.

Disclosure of Invention

An object of the embodiments of the present application is to provide a combination valve for metal hydrogen storage and a hydrogen storage system, which can adapt to the control requirement of an additionally added gas cylinder in the hydrogen storage system.

In order to solve the technical problems, the embodiment of the application provides a combined valve for metal hydrogen storage, which is used for connecting a first gas cylinder and a second gas cylinder which are sequentially distributed along the gas supply direction in a hydrogen storage system, wherein the combined valve for metal hydrogen storage comprises a valve body, a stop valve, a one-way valve, a TPRD pressure release valve and a filter; the valve body is provided with a first channel and a second channel, both ends of which penetrate through the valve body, and a third channel, one end of which penetrates through the valve body, and the other end of which is communicated with the first channel and the second channel; the stop valve is arranged at one end of the first channel and used for controlling the connection/disconnection between the other end of the first channel and the third channel, and the other end of the first channel is used for being connected with the second gas cylinder; the one-way valve is arranged at one end of the second channel, and the inlet end of the one-way valve is exposed out of the second channel and is used for connecting an air source; the TPRD relief valve is arranged at the other end of the second channel, and the outlet end of the TPRD relief valve is used for communicating with the outside; the filter is arranged at the end part of the third channel, and the outlet end of the filter is exposed out of the third channel and is used for being connected with the first gas cylinder.

The embodiment of the application also provides a hydrogen storage system, which comprises the combination valve for metal hydrogen storage.

The embodiment of the application provides a combination valve and hydrogen storage system for metal hydrogen storage is provided with in the valve body and runs through the intercommunication passageway that extends to the valve body surface, can be with various valve parts integration that realize different functions such as stop valve, check valve, TPRD relief valve on same valve body, realizes hydrogenation control and air feed control to the gas cylinder. When the device is applied, only different valves are communicated with corresponding hydrogen storage components, air sources and other hydrogen storage components, so that the device can adapt to the control requirement of an additionally added gas cylinder in a hydrogen storage system.

In some embodiments, the stop valve includes a stop valve seat, a stop valve spool, and a stop valve holder disposed in sequence within the first channel, the stop valve spool being threadably engaged with the stop valve holder, an end of the stop valve spool being sealable/separable from the stop valve seat upon movement.

In some embodiments, the combination valve for metal hydrogen storage further comprises an outlet connector disposed at the other end of the first passage, one end of the outlet connector defining a shut-off valve seat within the first passage, the other end of the outlet connector being exposed out of the first passage for connection with a second gas cylinder.

In some embodiments, the end of the shut-off valve spool is a tapered fit with the shut-off valve seat.

In some embodiments, the check valve includes an elastic member, a check valve spool, and a check valve seat disposed in sequence within the second channel, the check valve spool being sealed to the check valve seat via the elastic member.

In some embodiments, the TPRD relief valve comprises a relief valve seat, a temperature sensitive member, and a relief valve seat disposed in sequence within the second channel, the temperature sensitive member being located between the relief valve seat and the relief valve seat.

In some embodiments, the filter is a stainless steel filter with a filtration accuracy of 0.5 microns.

In some embodiments, the second channel is in communication with the first channel, and the other end of the third channel extends to where the second channel communicates with the first channel.

In some embodiments, the valve body is further provided with pressure sensors located on opposite sides of the valve body from the filter.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.

FIG. 1 is a schematic perspective view of a combination valve for hydrogen storage according to some embodiments of the present application;

FIG. 2 is a schematic cross-sectional view of a combination valve for hydrogen storage of metal provided in some embodiments of the present application;

FIG. 3 is a schematic cross-sectional view of a combination valve for hydrogen storage of metal according to some embodiments of the present application at another perspective;

fig. 4 is a schematic block diagram of a combination valve for hydrogen storage of metal according to some embodiments of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the following detailed description of each embodiment of the present application will be given with reference to the accompanying drawings. However, those of ordinary skill in the art will understand that in various embodiments of the present application, numerous technical details have been set forth in order to provide a better understanding of the present application. However, the technical solutions claimed in the present application can be implemented without these technical details and with various changes and modifications based on the following embodiments. The following embodiments are divided for convenience of description, and should not be construed as limiting the specific implementation of the present application, and the embodiments may be mutually combined and referred to without contradiction.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "coupled," and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

Along with the continuous development of a plurality of common new energy sources, hydrogen energy also increasingly enters the field of view of people, and in social production activities, the scene of hydrogen energy utilization is also continuously enriched. Hydrogen is widely available and can be produced from water, which burns in oxygen to produce water. Therefore, hydrogen is used as fuel, and no pollution is caused to the environment.

In hydrogen energy utilization, it is important to ensure the storage and transportation of hydrogen. In a hydrogen supply system using hydrogen as a fuel, hydrogen is generally stored in a gas cylinder, which is generally made of a metal having high strength. Hydrogen is compressed to a high pressure state, also known as high pressure hydrogen storage, prior to storage in a cylinder.

Unlike high-pressure hydrogen storage, the metal hydrogen storage technology stores hydrogen in the form of a metal hydride by combining a hydrogen storage alloy with hydrogen, and can release hydrogen under certain conditions. The hydrogen storage alloy is used for storing hydrogen, and has the characteristics of large hydrogen storage amount and low energy consumption. And can adopt the solid-state hydrogen storage bottle of low pressure to store up hydrogen, the relative high pressure hydrogen storage mode, the hydrogen storage system is small, and hydrogen pressure is low, and the hydrogen storage link security is higher, and it is also more convenient to arrange.

In practical situations, when the hydrogen gas remaining in the gas cylinder is continuously consumed to be insufficient, new hydrogen gas needs to be replenished into the gas cylinder. I.e. the hydrogen produced at the hydrogen source needs to be added to the hydrogen storage cylinder. In order to increase the hydrogen storage amount of the hydrogen storage system, the number of cylinders is generally additionally increased.

Meanwhile, in the hydrogen storage system, various valves for realizing different functions are needed to realize hydrogenation of hydrogen and transportation of the hydrogen to the fuel cell stack so as to control transportation and transfer of the hydrogen along different paths. After increasing the number of cylinders, it is an important issue how to adapt the valve member to the control requirements of the additional cylinders in the hydrogen storage system.

In order to accommodate the valve member to the control requirements of the additional gas cylinders in the hydrogen storage system, some embodiments of the present application provide a combination valve for metal hydrogen storage. The valve body of the combined valve for metal hydrogen storage is provided with a corresponding communication channel, so that various valve components such as a stop valve, a one-way valve, a TPRD pressure release valve and the like which realize different functions can be integrated on the same valve body, and the hydrogenation control and the gas supply control of the gas cylinder are realized. When the device is applied, only different valves are communicated with corresponding hydrogen storage components, air sources and other hydrogen storage components, so that the device can adapt to the control requirement of an additionally added gas cylinder in a hydrogen storage system.

The following describes, with reference to fig. 1 to 4, the structure of a combination valve for metal hydrogen storage according to some embodiments of the present application, where the combination valve for metal hydrogen storage is used to connect a first gas cylinder and a second gas cylinder sequentially distributed along a gas supply direction in a hydrogen storage system.

As shown in fig. 1 to 4, the combination valve for metal hydrogen storage provided in some embodiments of the present application includes a valve body 11, a stop valve 12, a check valve 13, a TPRD relief valve 14, and a filter 15; the valve body 11 is provided with a first passage 111 and a second passage 112, both ends of which penetrate the valve body 11, and a third passage 113, one end of which penetrates the valve body 11, and the other end of which communicates with the first passage 111 and the second passage 112; the shutoff valve 12 is provided at one end of the first passage 111 for controlling the communication/disconnection between the other end of the first passage 111 and the third passage 113, the other end of the first passage 111 being for connection to the second gas cylinder; the one-way valve 13 is arranged at one end of the second channel 112, and the inlet end of the one-way valve 13 is exposed out of the second channel 112 and is used for connecting an air source; the TPRD relief valve 14 is disposed at the other end of the second channel 112, and an outlet end of the TPRD relief valve 14 is used for communicating with the outside; the filter 15 is disposed at an end of the third passage 113, and an outlet end of the filter 15 is exposed to the outside of the third passage 113 for connection to the first gas cylinder.

The valve body 11 is the installation basis of other components in the combined valve, and facilitates the integration of the other components. The overall shape of the valve body 11 may be square, rectangular or other irregular shape. The valve body 11 is provided with a first channel 111, a second channel 112 and a third channel 113, both ends of the first channel 111 and both ends of the second channel 112 penetrate out of the valve body 11, and one end of the third channel 113 penetrates out of the valve body 11. The ends of these passages extending to the outer surface of the valve body 11 may be used to mount other valve components. Meanwhile, in order to ensure the simplicity of the whole structure of the valve component, the channels can be positioned on the same plane or a vertical plane, so that the arrangement difficulty of the valve component is reduced.

The shut-off valve 12, the check valve 13, the TPRD relief valve 14 and the filter 15 are mounted to the valve body 11 at different positions through the end of the inner passage of the valve body 11 extending to the outer surface, respectively. Wherein the shut-off valve 12 is used throughout the valve member to control the communication and disconnection between the fluid passage and the outlet. The one-way valve 13 is used throughout the valve assembly to control the flow of gas to transfer the gas from the gas source to the cylinder in a single direction. The TPRD relief valve 14 is used to effect relief in emergency situations. The filter 15 is connected with the gas cylinder to filter the gas flowing into and out of the gas cylinder, a mechanical interface can be adopted, and external threads can be designed at the interface of the filter 15 and the gas cylinder for connection. A sealing ring can be arranged between the filter 15 and the valve body 11 for sealing, and meanwhile, the valve body 11 can be provided with a sealing ring corresponding to the outer wall of the filter 15. The filter 15 can adopt 0.5 micron-sized filtering precision to reduce the negative influence of the hydrogen storage powder on the valve, thereby greatly improving the service life and reliability of the product.

According to the combined valve for metal hydrogen storage, provided by the embodiment of the application, the communication channel penetrating through the outer surface of the valve body 11 is arranged in the valve body 11, so that various valve components such as the stop valve 12, the one-way valve 13 and the TPRD relief valve 14 which realize different functions can be integrated on the same valve body 11, and hydrogenation control and gas supply control of a gas cylinder are realized. When the device is applied, only different valves are communicated with corresponding hydrogen storage components, air sources and other hydrogen storage components, so that the device can adapt to the control requirement of an additionally added gas cylinder in a hydrogen storage system.

In some embodiments, the shut-off valve 12 may include a shut-off valve seat 121, a shut-off valve spool 122, and a shut-off valve fixing seat 123 disposed in sequence within the first passage 111, the shut-off valve spool 122 being screw-engaged with the shut-off valve fixing seat 123, an end of the shut-off valve spool 122 being sealable/separable from the shut-off valve seat 121 upon movement.

A shut-off valve seat 121 is secured to the first passage 111 adjacent the outlet, and a shut-off valve seat 123 is secured within the end of the first passage 111. The stop valve seat 121 may be limited by a joint member disposed at an outlet of the first channel 111, and the stop valve fixing seat 123 may be fixed with an inner wall of the first channel 111 by threaded connection. The stop valve core 122 can rotate relative to the stop valve fixing seat 123, and one end of the stop valve core 122 stretches into a position of the first channel 111 adjacent to the outlet and can be matched with the stop valve seat 121, so that the functions of communication and closing are realized. The other end of the shut-off valve spool 122 may be connected to a handle 124, and the position of the shut-off valve spool 122 may be adjusted by rotating the handle 124 to change the mating relationship between the shut-off valve spool 122 and the shut-off valve seat 121.

In addition, a seal ring may be provided between the shut-off valve spool 122 and the inner wall of the first passage 111 of the valve body 11 so as to seal. The number of the sealing rings can be one or more, and the positions of the sealing rings can be located at the matching position of the stop valve core 122 and the valve body 11.

As shown in fig. 1 and 2, the combination valve for metal hydrogen storage may further include an outlet connector 16, the outlet connector 16 being provided at the other end of the first passage 111, one end of the outlet connector 16 defining a shutoff valve seat 121 within the first passage 111, the other end of the outlet connector 16 being exposed to the outside of the first passage 111 for connection with a second gas cylinder.

The outlet connection 16 can be fastened to the inner wall of the first channel 111 of the valve body 11 by means of a threaded connection, and the outlet connection 16 has a flow channel inside, through which gas can flow when the shut-off valve 12 is opened. In practical situations, when the stop valve 12 is in the open state, the gas in the second gas cylinder can flow to the first channel 111 through the third channel 113 of the valve body 11, and further flow to the first gas cylinder. Thereby realizing the gas confluence supply in a plurality of gas cylinders.

In order to seal the mating point between the outlet fitting 16 and the valve body 11, a sealing ring may be provided between the outlet fitting 16 and the inner wall of the first passage 111 in order to prevent gas leakage at the outlet. A seal ring may also be provided between the outlet fitting 16 and the shut-off valve seat 121 to ensure tightness therebetween.

In addition, the end of the shutoff valve spool 122 may be tapered with the shutoff valve seat 121.

That is, the inner wall surface of the through hole of the shutoff valve seat 121 for forming the gas passage may be tapered, and the outer wall surface of the end of the shutoff valve spool 122 may be tapered to fit thereto. Thus, the stop valve core 122 and the stop valve seat 121 can form a conical surface fit, and the stop valve core 122 can be in close contact with the stop valve seat 121 when moving relative to the stop valve seat 121. Thereby forming a high sealing property between the shut-off valve spool 122 and the shut-off valve seat 121.

As shown in fig. 2 and 3, the check valve 13 may include an elastic member 131, a check valve spool 132, and a check valve seat 133 sequentially disposed in the second passage 112, the check valve spool 132 being sealed with the check valve seat 133 via the elastic member 131.

One end of the check valve seat 133 is inserted into the third passage 113 and is fixed to the valve body 11 by screw connection, and the check valve core 132 and the elastic member 131 may be disposed in the inner passage of the check valve seat 133. The other end of the check valve seat 133 is located outside the third channel 113 and can be connected to an air source pipeline so as to timely supplement air into the air bottle. One end of the elastic member 131 may abut against the stepped surface in the third channel 113, and the other end of the elastic member 131 may apply an elastic force to the check valve core 132. So that the sealing member assembled in the check valve core 132 can maintain a sealing state with the check valve seat 133, and gas cannot flow out of the valve body 11 from the check valve 13.

In order to achieve the sealing effect at the position where the check valve 13 is matched with the valve body 11, a sealing ring may be disposed between the check valve seat 133 and the inner wall of the third channel 113.

In some embodiments, the TPRD relief valve 14 may include a relief valve seat 141, a temperature sensitive member 142, and a relief valve seat 143 disposed in sequence within the second passage 112, the temperature sensitive member 142 being located between the relief valve seat 141 and the relief valve seat 143.

The pressure release valve fixing seat 143 and the inner wall of the second channel 112 can be fixed through threaded connection, and the temperature sensitive element 142 is positioned between the pressure release valve seat 141 and the pressure release valve fixing seat 143. In case of emergency, the temperature sensitive member 142 is broken, and the passage in the valve body 11 is communicated with the outside through the inner through hole of the relief valve seat 141, thereby achieving the purpose of relief.

Meanwhile, a seal ring may be provided between the relief valve seat and the inner wall of the second passage 112 of the valve body 11 so as to seal.

As shown in fig. 2 and 3, the second passage 112 may communicate with the first passage 111, and the other end of the third passage 113 extends to a communication place of the second passage 112 and the first passage 111.

In this way, the arrangement of the different fluid channels within the valve body 11 can be facilitated without deliberately avoiding the positions of the other channels. In addition, the overall structure of the valve body 11 can be made more compact, and the miniaturization of the combination valve can be facilitated.

In addition, the valve body 11 may be provided with pressure sensors located on opposite sides of the valve body 11 with the filter 15.

The pressure sensor can detect the gas pressure in the valve body 11 so as to judge the pressure condition in the valve body 11 and avoid influencing the stability of the hydrogen storage system due to abnormal pressure in the valve body 11.

The working principle of the combination valve for metal hydrogen storage provided by some embodiments of the application is as follows:

during hydrogenation, hydrogen enters the solid hydrogen storage cylinder through the one-way valve 13. When hydrogen is used, the hydrogen enters a hydrogen pipeline from the inside of the gas cylinder through the stop valve 12 and the outlet joint 16, and the hydrogen in other gas cylinders is combined into the electric pile for gas supply. The stop valve 12 is in a normally open state, and on the premise that the gas cylinder is not deflated, the connection between the gas cylinder and the pipeline is closed by using the stop valve 12 when the pipeline is maintained. The TPRD relief valve 14 is a safety device, and when the temperature exceeds a set value, the temperature sensitive element 142 in the TPRD relief valve 14 is broken, and the gas cylinder is communicated with a relief pipeline, so that emergency relief of gas in the gas cylinder is realized.

Some embodiments of the present application further provide a hydrogen storage system, where the hydrogen storage system includes the combination valve for metal hydrogen storage.

By adopting the integrated combination valve, the pipeline arrangement quantity in the hydrogen storage system can be effectively reduced. Meanwhile, the difficulty of later debugging and maintenance is reduced, and the arrangement and the use of the hydrogen storage system are facilitated.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of implementing the present application and that various changes in form and details may be made therein without departing from the spirit and scope of the present application.

Claims (10)

1. The utility model provides a combination valve for metal stores up hydrogen for connect among the hydrogen storage system along the first gas cylinder and the second gas cylinder that air feed direction distributes in proper order, its characterized in that includes:

the valve body is provided with a first channel and a second channel, wherein two ends of the first channel and the second channel penetrate through the valve body, one end of the third channel penetrates through the valve body, and the other end of the third channel is communicated with the first channel and the second channel;

a shut-off valve provided at one end of the first passage for controlling the communication/disconnection between the other end of the first passage and the third passage, the other end of the first passage being connected to the second gas cylinder;

the one-way valve is arranged at one end of the second channel, and the inlet end of the one-way valve is exposed out of the second channel and is used for connecting an air source;

the TPRD relief valve is arranged at the other end of the second channel, and the outlet end of the TPRD relief valve is used for being communicated with the outside;

the filter is arranged at the end part of the third channel, and the outlet end of the filter is exposed out of the third channel and is used for being connected with the first gas cylinder.

2. The combination valve for metal hydrogen storage according to claim 1, wherein the shut-off valve includes a shut-off valve seat, a shut-off valve spool, and a shut-off valve holder that are disposed in the first passage in this order, the shut-off valve spool being screw-fitted with the shut-off valve holder, an end portion of the shut-off valve spool being sealable/separable from the shut-off valve seat when moved.

3. The combination valve for metal hydrogen storage according to claim 2, further comprising an outlet joint provided at the other end of the first passage, one end of the outlet joint defining the shutoff valve seat in the first passage, the other end of the outlet joint being exposed outside the first passage for connection with the second gas cylinder.

4. The combination valve for hydrogen storage of claim 2, wherein the end of the valve core of the stop valve is in conical surface fit with the valve seat of the stop valve.

5. The combination valve for hydrogen storage of claim 1, wherein said check valve comprises an elastic member, a check valve spool and a check valve seat sequentially disposed in said second passage, said check valve spool being sealed with said check valve seat via said elastic member.

6. The combination valve for hydrogen storage of claim 1, wherein the TPRD relief valve comprises a relief valve seat, a temperature sensitive element and a relief valve seat, which are sequentially disposed in the second channel, the temperature sensitive element being disposed between the relief valve seat and the relief valve seat.

7. The combination valve for hydrogen storage of claim 1 wherein said filter is a stainless steel filter having a filtration accuracy of 0.5 microns.

8. The combination valve for hydrogen storage of claim 1, wherein said second passage and said first passage are in communication with each other, and the other end of said third passage extends to a point where said second passage and said first passage are in communication.

9. The combination valve for hydrogen storage of claim 1 wherein said valve body is further provided with a pressure sensor, said pressure sensor being located on opposite sides of said valve body from said filter.

10. A hydrogen storage system comprising the combination valve for metal hydrogen storage according to any one of claims 1 to 9.