A kind of exhaust superhigh pressure control valve set for hydrogen filling station compressor and hydrogen storage system

Abstract

The embodiment of the application relates to the hydrogen energy utilization technical field, and discloses a kind of exhaust superhigh pressure control valve group for hydrogen station compressor and hydrogen storage system.The exhaust superhigh pressure control valve group for hydrogen station compressor in it includes valve body, first stop valve, first drive piston, first main valve spool, first solenoid valve assembly, second drive piston, second main valve spool, second solenoid valve assembly and second stop valve;Valve body is provided with two ends respectively through to the first channel of valve body surface, one end is communicated with the first channel, the second channel is communicated with the other end through to the valve body surface, the third channel that communicates the first channel and the second channel, and the fourth channel and the fifth channel that are communicated to the first channel respectively;First stop valve is arranged on valve body.The exhaust superhigh pressure control valve group for hydrogen station compressor and hydrogen storage system provided in the application can effectively control hydrogen flow and ensure the safety of valve components in the process of hydrogen high-pressure circulation.

Description

An ultra-high pressure exhaust control valve assembly and hydrogen storage system for a hydrogen refueling station compressor Technical Field

[0001] This application relates to the field of hydrogen energy utilization technology, and in particular to an ultra-high pressure exhaust control valve group and hydrogen storage system for a hydrogen refueling station compressor. Background Technology

[0002] The increasing use of traditional fossil fuels and the resulting pollution are causing increasingly severe environmental damage, leading to the emergence of various new energy sources. These new energy sources share common characteristics: abundant supply and no harmful emissions during use. Currently, the most widely used new energy sources include solar, wind, and hydrogen energy. Hydrogen energy, in particular, uses hydrogen gas as fuel. Hydrogen can be produced by decomposing water, and its combustion produces water as a byproduct. Therefore, given the ease of availability and cleanliness of hydrogen energy utilization, using hydrogen as fuel has promising application prospects.

[0003] The utilization of hydrogen energy typically involves processes such as hydrogen production, transportation, and refueling. Upstream, after hydrogen production, the hydrogen is transported to downstream hydrogen refueling stations for storage, and finally, it is added to vehicles equipped with hydrogen fuel cells via refueling machines. At the refueling station, the transported low-pressure hydrogen is compressed to a high-pressure state using compressors. During this process, valve components are needed to effectively control the flow of hydrogen and ensure its safety during high-pressure circulation; that is, a valve component capable of effectively controlling the flow of hydrogen and ensuring its safety during high-pressure circulation is required. Summary of the Invention

[0004] The purpose of this application is to provide an exhaust ultra-high pressure control valve group and hydrogen storage system for a hydrogen refueling station compressor, which can effectively control the flow of hydrogen and ensure the safety of hydrogen during high-pressure flow.

[0005] To address the aforementioned technical problems, embodiments of this application provide an ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor. The control valve assembly includes a valve body, a first shut-off valve, a first drive piston, a first main valve core, a first solenoid valve assembly, a second drive piston, a second main valve core, a second solenoid valve assembly, and a second shut-off valve. The valve body is provided with a first channel extending to the surface of the valve body at both ends, a second channel with one end connected to the first channel and the other end extending to the surface of the valve body, a third channel connecting the first and second channels, and a fourth and fifth channel respectively connected to the first channel. The first shut-off valve is disposed on the valve body, and its core is used to control the connection / disconnection of the first and second channels. The first drive piston is disposed within the valve body and located at the end of the fourth channel; the first drive piston can move within the valve body under pressure. The first main valve core is disposed within the valve body. The first channel is connected to the first drive piston and is used to control the connection / disconnection of the first channel and the third channel; the first solenoid valve assembly is disposed on the valve body, and the valve core of the first solenoid valve assembly is used to control the connection / disconnection of the fourth channel; the second drive piston is disposed in the valve body and located at the end of the fifth channel, and the second drive piston can move within the valve body under pressure; the valve core of the second main valve is disposed in the first channel and is connected to the second drive piston and is used to control the connection / disconnection of the first channel; the second solenoid valve assembly is disposed on the valve body, and the valve core of the second solenoid valve assembly is used to control the connection / disconnection of the fifth channel; the second shut-off valve is disposed on the valve body, and the valve core of the second shut-off valve is used to control the connection / disconnection of the first channel; the valve cores of the first shut-off valve, the first main valve, the second main valve, and the second shut-off valve are distributed sequentially along the flow direction of the first channel.

[0006] The embodiments of this application also provide a hydrogen storage system, which includes the above-mentioned exhaust ultra-high pressure control valve group for hydrogen refueling station compressors.

[0007] The embodiments of this application provide an ultra-high pressure exhaust control valve assembly and hydrogen storage system for hydrogen refueling station compressors. This system integrates various valves, such as shut-off valves and solenoid valves, that perform different functions onto a single valve body, with corresponding communication channels within the valve body. In application, simply connecting the channel openings on the valve body surface to the corresponding system pipeline allows control of each valve to address issues such as input switch control, manual pressure release, and remote pressure control for discharge. This effectively controls hydrogen flow and ensures the safety of hydrogen during high-pressure circulation.

[0008] In some embodiments, the valve body is provided with a sixth channel, one end of which is connected to the first channel located between the first main valve core and the second main valve core, and the other end of which extends through to the surface of the valve body. A safety valve is provided in the sixth channel.

[0009] In some embodiments, the valve body is provided with a seventh channel and an eighth channel respectively connected to the sixth channel, as well as a first mounting hole for mounting the first solenoid valve assembly and a second mounting hole for mounting the second solenoid valve assembly. The other end of the seventh channel is connected to the first mounting hole, and the other end of the eighth channel is connected to the second mounting hole.

[0010] In some implementations, the first mounting hole and the second mounting hole are symmetrically arranged about the sixth channel.

[0011] In some embodiments, a one-way valve is provided at one end of the fourth channel connected to the first channel and at one end of the fifth channel connected to the first channel. The valve core of the first solenoid valve assembly and the valve core of the second solenoid valve assembly are respectively held against the valve core of the one-way valve located in the corresponding channel by a first push rod.

[0012] In some embodiments, the first driving piston and the second driving piston are respectively supported on the first main valve core and the second main valve core by the second push rod. The ends of the first driving piston and the first main valve core that are far apart from each other, and the ends of the second driving piston and the second main valve core that are far apart from each other, are subjected to elastic forces in opposite directions. The projected area of ​​the first driving piston in the moving direction is larger than the projected area of ​​the first main valve core in the moving direction, and the projected area of ​​the second driving piston in the moving direction is larger than the projected area of ​​the second main valve core in the moving direction.

[0013] In some embodiments, the valve core of the first shut-off valve and the valve core of the second shut-off valve are both provided with a through hole extending along their own movement direction and an unloading surface located on the flow path of the through hole.

[0014] In some embodiments, the first channel is configured with a bent shape at the valve core of the first shut-off valve, the valve core of the first main valve, the valve core of the second main valve, and the valve core of the second shut-off valve.

[0015] In some embodiments, the valve cores of the first shut-off valve, the first main valve, the second main valve, and the second shut-off valve are fitted with a tapered surface to the inner wall of the first through hole. Attached Figure Description

[0016] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0017] Figure 1 is a schematic diagram of the structure of an ultra-high pressure exhaust control valve group for a hydrogen refueling station compressor provided in some embodiments of this application;

[0018] Figure 2 is a schematic block diagram of the exhaust ultra-high pressure control valve group for hydrogen refueling station compressors provided in some embodiments of this application. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been presented in the various embodiments of this application to enable readers to better understand this application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical solutions claimed in this application can be implemented. The division of the various embodiments below is for the convenience of description and should not constitute any limitation on the specific implementation of this application. The various embodiments can be combined with and referenced by each other without contradiction.

[0020] Unless otherwise defined, 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 pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0021] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0022] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0023] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0024] Compared to traditional fossil fuels, new energy sources such as wind and solar power are not only highly sustainable, but also do not cause serious environmental pollution during their use. Among them, hydrogen energy uses hydrogen gas as fuel to provide power to the outside world.

[0025] In hydrogen energy utilization, ensuring the storage and transportation of hydrogen is crucial. Hydrogen is typically stored in cylinders, usually made of high-strength metals. Before being stored in these cylinders, the hydrogen is compressed to a high-pressure state, a process known as high-pressure hydrogen storage.

[0026] Hydrogen refueling stations serve as a link between the upstream hydrogen production industry and the downstream fuel cell industry. Upstream hydrogen production plants provide hydrogen at a pressure of 20 MPa (megapascals). The hydrogen produced upstream is transported via long-tube trailers. Upon arrival at the downstream refueling station, the transported hydrogen is compressed to an ultra-high pressure of 90 MPa using a compressor. After compression, the hydrogen is distributed into different storage cylinders for storage. The stored high-pressure hydrogen can then be added to vehicles equipped with hydrogen fuel cells using hydrogen refueling machines.

[0027] In hydrogen storage, the hydrogen storage cylinder is connected to the compressor outlet via a valve assembly to store the high-pressure hydrogen produced by the compressor. This process requires valve control to address issues such as compressor outlet input switch control, manual pressure release, and remote pressure control for discharge.

[0028] Therefore, some embodiments of this application provide an ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor, which integrates various valves such as shut-off valves and solenoid valves that perform different functions onto a single valve body, and sets corresponding communication channels within the valve body. In application, simply connecting the channel openings on the valve body surface to the corresponding system pipeline allows for the control of various valves to address issues such as input switch control, manual pressure release, and remote pressure control for discharge.

[0029] The structure of the exhaust ultra-high pressure control valve group for hydrogen refueling station compressors provided in some embodiments of this application is described below with reference to Figures 1 and 2.

[0030] As shown in Figures 1 and 2, the exhaust ultra-high pressure control valve assembly for a hydrogen refueling station compressor provided in some embodiments of this application includes a valve body 11, a first shut-off valve K1, a first drive piston 13, a first main valve core 14, a first solenoid valve assembly 15, a second drive piston 16, a second main valve core 17, a second solenoid valve assembly 18, and a second shut-off valve K2; the valve body 11 is provided with a first channel 111 with both ends extending to the surface of the valve body 11, and a second channel 112 with one end connected to the first channel 111 and the other end extending to the surface of the valve body 11. The valve body 11 has a third channel 113 connecting the first channel 111 and the second channel 112, and a fourth channel 114 and a fifth channel 115 respectively connecting to the first channel 111; a first shut-off valve K1 is disposed on the valve body 11, and the valve core of the first shut-off valve K1 is used to control the connection / disconnection of the first channel 111 and the second channel 112; a first drive piston 13 is disposed inside the valve body 11 and located at the end of the fourth channel 114, and the first drive piston 13 can move inside the valve body 11 under pressure; the first main valve core 14 is disposed on the third channel 113 connecting the first channel 111 and the second channel 112, and the fourth channel 114 and the fifth channel 115 respectively connecting to the first channel 111; a first shut-off valve K1 is disposed on the valve body 11, and the valve core of the first shut-off valve K1 is used to control the connection / disconnection of the first channel 111 and the second channel 112; a first drive piston 13 is disposed inside the valve body 11 and located at the end of the fourth channel 114, and the first drive piston 13 can move inside the valve body 11 under pressure; a first main valve core 14 is disposed on the third channel 113 connecting the first channel 111 and the second channel 112, and the third channel 113 connecting the first channel 111 and the second channel 112, and a fourth channel 114 and a fifth channel 115 respectively connecting to the first channel 111; a first shut-off valve K1 is disposed on the valve body 11, and the valve core of the first main valve K1 is disposed on the third channel 112; a first main valve core 114 is disposed on the fourth channel 112; a third channel 113 connecting the first channel 111 and the second channel 112, and a third channel A first solenoid valve assembly 15 is disposed in the valve body 11 and is linked with the first drive piston 13 to control the connection / disconnection of the first channel 111 and the third channel 113; the first solenoid valve assembly 15 is disposed on the valve body 11, and the valve core of the first solenoid valve assembly 15 is used to control the connection / disconnection of the fourth channel 114; the second drive piston 16 is disposed in the valve body 11 and is located at the end of the fifth channel 115, and the second drive piston 16 can move within the valve body 11 under pressure; the second main valve core 17 is disposed in the first channel 111 and is linked with the second drive piston 13 to control the connection / disconnection of the fourth channel 114; the second drive piston 16 is disposed in the valve body 11 and is located at the end of the fifth channel 115, and the second drive piston 16 can move within the valve body 11 under pressure; the second main valve core 17 is disposed in the first channel 111 and is linked with the second drive piston 1 ...4 to control the connection / disconnection of the fourth channel 114; the second drive piston 16 is disposed in the valve body 11 and is located at the end of the fifth channel 115, and the second drive piston 16 can move within the valve body 115 under pressure. The moving piston 16 is linked and used to control the connection / disconnection of the first channel 111; the second solenoid valve assembly 18 is disposed on the valve body 11, and the valve core of the second solenoid valve assembly 18 is used to control the connection / disconnection of the fifth channel 115; the second shut-off valve K2 is disposed on the valve body 11, and the valve core of the second shut-off valve K2 is used to control the connection / disconnection of the first channel 111; the valve cores of the first shut-off valve K1, the first main valve 14, the second main valve 17, and the second shut-off valve K2 are distributed sequentially along the flow direction of the first channel 111.

[0031] The valve body 11 serves as the mounting base for other components in the control valve assembly, facilitating their integration. The overall shape of the valve body 11 can be a cube, cuboid, or other irregular shape. The valve body 11 contains various fluid channels serving different functions. Some of these channels extend to the surface of the valve body 11, forming openings that can connect to different pipelines in the system. To ensure the overall structural simplicity of the valve components, some of these openings can be distributed on the same surface of the valve body 11, reducing the difficulty of flow channel arrangement. Furthermore, the valve body 11 also has openings for mounting different valve components.

[0032] The first shut-off valve K1, the first solenoid valve assembly 15, the second solenoid valve assembly 18, and the second shut-off valve K2 are respectively installed at different positions on the valve body 11 through openings on the outer surface of the valve body 11. The shut-off valves control the connection and disconnection between the internal channels of the valve body 11, while the solenoid valve assemblies enable remote automatic control. The first shut-off valve K1 is located near the gas inlet of the first channel 111 of the valve body 11, controlling the normal flow of gas within the first channel 111 or its discharge through the second channel 112. The second shut-off valve K2 is located near the gas outlet of the first channel 111 of the valve body 11, controlling the normal flow of gas. The valve cores of both the first and second shut-off valves K2 function within the first channel 111, which is the hydrogen flow channel. During hydrogenation, the first shut-off valve K1 is normally closed, and the second shut-off valve K2 is normally open.

[0033] The first solenoid valve assembly 15 controls the opening and closing of the fourth channel 114, and the second solenoid valve assembly 18 controls the opening and closing of the fifth channel 115. The fourth and fifth channels 114 are auxiliary control channels. By adopting a configuration where the driving piston cooperates with the main valve core, the problem of the solenoid valve core being unable to effectively open the channel due to direct contact with the gas force can be avoided. Furthermore, the position of the main valve core can be controlled by remotely controlling the opening and closing of the solenoid valve assembly, thereby controlling the flow of hydrogen in the first channel 111 or controlling the emission of hydrogen sequentially through the third channel 113 and the second channel 112. The whole formed by the solenoid valve assembly, the driving piston, and the main valve core can be regarded as a solenoid valve that realizes remote control function. That is, the whole formed by the first solenoid valve assembly 15, the first driving piston 13, and the first main valve core 14 can be regarded as the first solenoid valve M1, and the whole formed by the second solenoid valve assembly 18, the second driving piston 16, and the second main valve core 17 can be regarded as the second solenoid valve M2. The first solenoid valve M1 is used to control the discharge of hydrogen gas through the third channel 113 and the second channel 112 in sequence, and the second solenoid valve M2 is used to control the normal flow of hydrogen gas in the first channel 111.

[0034] The exhaust ultra-high pressure control valve assembly for hydrogen refueling station compressors provided in some embodiments of this application integrates various valves, such as shut-off valves and solenoid valves, that perform different functions onto a single valve body 11, and provides corresponding communication channels within the valve body 11. In application, simply connecting the channel openings on the surface of the valve body 11 to the corresponding system pipeline allows for the control of various valves to address issues such as input switch control, manual pressure release, and remote pressure control discharge, thereby effectively controlling hydrogen flow and ensuring the safety of hydrogen during high-pressure circulation.

[0035] In some embodiments, the valve body 11 may be provided with a sixth channel 116, one end of the sixth channel 116 being connected to the first channel 111 located between the first main valve core 14 and the second main valve core 17, and the other end of the sixth channel 116 extending through the surface of the valve body 11, and a safety valve A1 being provided in the sixth channel 116.

[0036] The sixth channel 116 is a safety relief channel provided inside the valve body 11. The safety valve A1 inside the sixth channel 116 can be opened when the gas inside the valve body 11 is overpressurized, so that the overpressurized gas inside the valve body 11 can be released from the sixth channel 116 to the outside of the valve body 11.

[0037] In practice, the operating pressure of safety valve A1 can be 95 MPa. That is, when the internal working pressure of valve body 11 exceeds 95 MPa, safety valve A1 will open. This allows the gas to be discharged from the sixth channel 116 in a timely manner, ensuring system safety.

[0038] In addition, the valve body 11 may be provided with a seventh channel 117 and an eighth channel 118 respectively connected to the sixth channel 116, as well as a first mounting hole 119 for mounting the first solenoid valve assembly 15 and a second mounting hole 110 for mounting the second solenoid valve assembly 18. The other end of the seventh channel 117 is connected to the first mounting hole 119, and the other end of the eighth channel 118 is connected to the second mounting hole 110.

[0039] The seventh channel 117 and the eighth channel 118 are the gas discharge channels for the auxiliary control channels corresponding to the two solenoid valve assemblies. By connecting the seventh channel 117 and the eighth channel 118 to the sixth channel 116, the gas in the auxiliary control channels can be discharged from the sixth channel 116 to the outside of the valve body 11 when the solenoid valve assembly is closed (i.e., the coil of the solenoid valve assembly is de-energized). This allows the first main valve core 14 and the second main valve core 17 to smoothly reset to a state of sealing with the inner wall of the first channel 111 when the corresponding solenoid valve assembly is closed.

[0040] When the solenoid valve assembly is open (i.e., the coil of the solenoid valve assembly is energized), the valve core of the solenoid valve assembly abuts against the wall of the mounting hole, disconnecting the auxiliary control channel from the corresponding discharge channel; when the solenoid valve assembly is closed, the valve core of the solenoid valve assembly separates from the wall of the mounting hole, connecting the auxiliary control channel and the corresponding discharge channel. Gas located in the auxiliary control channel can enter the corresponding discharge channel when the solenoid valve assembly is closed, and then flow out of the valve body 11 through the sixth channel 116 to achieve discharge. A sealing ring can be provided between the housing of each solenoid valve assembly and the mounting hole of the valve body 11 for sealing.

[0041] In some embodiments, the first mounting hole 119 and the second mounting hole 110 may be symmetrically arranged with respect to the sixth channel 116.

[0042] By adopting a symmetrical arrangement, the overall structure of the control valve assembly can be made more regular, which is beneficial for the arrangement of fluid channels within the valve body 11. At the same time, it can also make the overall structure of the valve body 11 more regular, which is conducive to the miniaturization of the control valve assembly.

[0043] As shown in Figure 1, one-way valves 19 are provided in one end of the fourth channel 114 connected to one end of the first channel 111 and in one end of the fifth channel 115 connected to one end of the first channel 111. The valve cores of the first solenoid valve assembly 15 and the second solenoid valve assembly 18 are respectively held against the valve cores of the one-way valves 19 located in the corresponding channels by the first push rod 20.

[0044] The one-way valve 19 prevents gas backflow. When the coil of the solenoid valve assembly is de-energized, gas can flow from the inlet through the first channel 111 to the one-way valve 19. The gas pressure acts on the valve core of the one-way valve 19, keeping it closed. When the coil of the solenoid valve assembly is energized, the valve core moves downward, pushing the first push rod 20 downward and simultaneously opening the valve core of the one-way valve 19. At this time, gas can enter the fourth channel 114 or the fifth channel 115. The gas pressure acts on the upper surface of the corresponding drive piston, thereby driving the main valve core through the drive piston, thus opening the hydrogen flow channel or the hydrogen emission channel.

[0045] In addition, the first driving piston 13 and the second driving piston 16 can respectively abut against the first main valve core 14 and the second main valve core 17 via the second push rod 21. The ends of the first driving piston 13 and the first main valve core 14 that are far apart from each other, and the ends of the second driving piston 16 and the second main valve core 17 that are far apart from each other, are subjected to elastic forces in opposite directions. The projected area of ​​the first driving piston 13 in the moving direction is larger than the projected area of ​​the first main valve core 14 in the moving direction, and the projected area of ​​the second driving piston 16 in the moving direction is larger than the projected area of ​​the second main valve core 17 in the moving direction.

[0046] In other words, the first drive piston 13 and the first main valve core 14, and the second drive piston 16 and the second main valve core 17 are respectively connected by a second push rod 21. The second push rod 21 can play the role of transmitting motion between the first drive piston 13 and the first main valve core 14, and between the second drive piston 16 and the second main valve core 17.

[0047] When the solenoid valve assembly is open, gas can reach the drive piston from the first channel 111 and the auxiliary control channel. This exerts a force on the surface of the drive piston, causing it to move within the valve body 11. The movement is then transmitted via the second push rod 21 to the corresponding main valve spool, causing it to switch positions. When the solenoid valve assembly is closed, the drive piston and the corresponding main valve spool can automatically reset under the action of elastic force, returning to their initial state. In practice, the elastic forces applied to the ends of the drive piston and the corresponding main valve spool that are furthest apart can be approximately equal.

[0048] Furthermore, since the projected area of ​​the driving piston in the direction of movement is larger than that of the main valve core in the direction of movement, when the solenoid valve assembly is opened, the gas force acting on the driving piston in the direction of movement is greater than that acting on the main valve core in the direction of movement. This allows the driving piston to move the main valve core, completing the opening process of the hydrogen flow channel or the hydrogen emission channel inside the valve body 11.

[0049] As shown in Figure 1, in order to ensure the sealing effect when the drive piston, the second push rod 21 and the main valve core move, sealing rings can be set at the joints between the drive piston and the valve body 11, the joints between the second push rod 21 and the valve body 11 and the joints between the main valve core and the valve body 11 for sealing.

[0050] In some embodiments, the valve core of the first shut-off valve K1 and the valve core of the second shut-off valve K2 may both be provided with a through hole 121 extending along their own moving direction, and an unloading surface 122 located on the flow path of the through hole 121.

[0051] The unloading surface 122 can be set parallel to the valve core end face of the shut-off valve. The through hole 121 allows the gas reaching the valve core of the shut-off valve to continue flowing and eventually reach the unloading surface 122. The force exerted by the gas on the unloading surface 122 can cancel out the force exerted by the gas on the valve core end face of the shut-off valve, thereby achieving the unloading effect. In this way, during the opening of the shut-off valve, the resistance formed by the gas entering the channel can be reduced, avoiding a series of problems such as valve opening and closing being unsmooth, obstruction, or inability to open.

[0052] In addition, the first channel 111 can be configured as a bent shape at the valve core of the first shut-off valve K1, the valve core 14 of the first main valve, the valve core 17 of the second main valve, and the valve core of the second shut-off valve K2.

[0053] In this way, the bent fluid channel design can buffer the gas flowing in the first channel 111, reduce the impact of the gas on each valve core, and ensure the service life of each valve core in the first channel 111.

[0054] In some embodiments, the valve core of the first shut-off valve K1, the valve core of the first main valve 14, the valve core of the second main valve 17, the valve core of the second shut-off valve K2, and the inner wall of the first through hole 121 can be in a tapered fit.

[0055] By using a conical surface fit, the contact sealing effect between the valve core of the first shut-off valve K1, the valve core 14 of the first main valve, the valve core 17 of the second main valve, the valve core of the second shut-off valve K2, and the valve body 11 can be effectively ensured.

[0056] Furthermore, a sealing ring can be provided between the valve core, handle and valve body 11 of the first shut-off valve K1, and between the valve core, handle and valve body 11 of the second shut-off valve K2, to ensure the sealing effect between the shut-off valve and the valve body 11.

[0057] The working principle of the intake control valve assembly for the compressor at the aforementioned hydrogen refueling station is as follows:

[0058] When the control valve assembly is operating, hydrogen gas enters the first channel 111 through the opening on the surface of valve body 11 (i.e., the hydrogen inlet), at which time the first shut-off valve K1 is normally closed. The hydrogen gas passes through the valve core of the first shut-off valve K1 and reaches the valve core 14 of the first main valve. The coil of the first solenoid valve assembly 15 is de-energized, and the first main valve core 14 is sealed to the inner wall of the third channel 113, meaning the first solenoid valve M1 is closed. The hydrogen gas reaches the valve core 17 of the second main valve, and the coil of the second solenoid valve assembly 18 is energized, causing the second main valve core 17 to leave the sealed state with the inner wall of the first channel 111, meaning the second solenoid valve M2 is open. The hydrogen gas then reaches the valve core of the second shut-off valve K2, which is normally open. Finally, the hydrogen gas enters the downstream pipeline system through the outlet on the surface of valve body 11 (i.e., the hydrogen outlet).

[0059] When gas needs to be released, the first shut-off valve K1 can be opened, and the gas inside the valve body 11 will be discharged to the outside of the valve body 11 through the second channel 112. Alternatively, the first solenoid valve assembly 15 can be automatically opened via remote control, energizing its coil and causing the first main valve core 14 to break the seal between itself and the inner wall of the third channel 113, even if the first solenoid valve M1 is in the open state. The gas inside the valve body 11 will then be discharged to the outside of the valve body 11 through both the third channel 113 and the second channel 112.

[0060] When the valve is overpressurized, that is, when the working pressure inside the valve exceeds 95MPa, the safety valve A1 opens, and the overpressurized gas can be discharged to the outside of the valve body 11 through the sixth channel 116 in a timely manner.

[0061] Some embodiments of this application also provide a hydrogen storage system, which includes the above-mentioned exhaust ultra-high pressure control valve group for hydrogen refueling station compressors.

[0062] By employing highly integrated control valve assemblies to control gas flow, pipeline layout can be simplified, avoiding the disruption of system safety caused by messy pipeline arrangements. Simultaneously, the integrated control valve assembly enables effective control of hydrogen flow and ensures the safety of hydrogen during high-pressure circulation.

[0063] Those skilled in the art will understand that the above embodiments are specific implementations of this application, and in practical applications, various changes can be made in form and detail without departing from the spirit and scope of this application.

Claims

1. A high-pressure exhaust control valve assembly for a hydrogen refueling station compressor, characterized in that, include: The valve body is provided with a first channel extending through both ends to the surface of the valve body, a second channel with one end connected to the first channel and the other end extending through the surface of the valve body, a third channel connecting the first channel and the second channel, and a fourth channel and a fifth channel respectively connected to the first channel; A first shut-off valve is disposed on the valve body, and its valve core is used to control the connection / disconnection between the first channel and the second channel; a first drive piston is disposed within the valve body and located at the end of the fourth channel, and the first drive piston can move within the valve body under pressure; a first main valve core is disposed within the first channel and works in conjunction with the first drive piston to control the connection / disconnection between the first channel and the third channel; a first solenoid valve assembly is disposed on the valve body, and its valve core is used to control the connection / disconnection of the fourth channel; The second driving piston is disposed in the valve body and located at the end of the fifth channel. The second driving piston can move within the valve body under pressure. The second main valve core is disposed in the first channel and works in conjunction with the second drive piston to control the connection / disconnection of the first channel; the second solenoid valve assembly is disposed on the valve body, and the valve core of the second solenoid valve assembly is used to control the connection / disconnection of the fifth channel; A second shut-off valve is disposed on the valve body. The valve core of the second shut-off valve is used to control the connection / disconnection of the first channel. The valve cores of the first shut-off valve, the first main valve, the second main valve, and the second shut-off valve are distributed sequentially along the flow direction of the first channel.

2. The ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor according to claim 1, characterized in that, The valve body is provided with a sixth channel. One end of the sixth channel is connected to the first channel located between the first main valve core and the second main valve core. The other end of the sixth channel extends through the surface of the valve body. A safety valve is provided in the sixth channel.

3. The ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor according to claim 2, characterized in that, The valve body is provided with a seventh channel and an eighth channel respectively connected to the sixth channel, as well as a first mounting hole for installing the first solenoid valve assembly and a second mounting hole for installing the second solenoid valve assembly. The other end of the seventh channel is connected to the first mounting hole, and the other end of the eighth channel is connected to the second mounting hole.

4. The ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor according to claim 3, characterized in that, The first mounting hole and the second mounting hole are symmetrically arranged about the sixth channel.

5. The ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor according to claim 1, characterized in that, One-way valves are provided at one end of the fourth channel connected to the first channel and at one end of the fifth channel connected to the first channel. The valve cores of the first solenoid valve assembly and the second solenoid valve assembly are respectively held against the valve cores of the one-way valves located in the corresponding channels by a first push rod.

6. The ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor according to claim 1, characterized in that, The first driving piston and the second driving piston are respectively supported on the first main valve core and the second main valve core by the second push rod. The ends of the first driving piston and the first main valve core that are far apart from each other, and the ends of the second driving piston and the second main valve core that are far apart from each other, are subjected to elastic forces in opposite directions. The projected area of ​​the first driving piston in the moving direction is larger than the projected area of ​​the first main valve core in the moving direction, and the projected area of ​​the second driving piston in the moving direction is larger than the projected area of ​​the second main valve core in the moving direction.

7. The ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor according to claim 1, characterized in that, Both the valve core of the first shut-off valve and the valve core of the second shut-off valve are provided with a through hole extending along their own moving direction, and an unloading surface located on the flow path of the through hole.

8. The ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor according to claim 1, characterized in that, The first channel is configured with a bent shape at the valve core of the first shut-off valve, the valve core of the first main valve, the valve core of the second main valve, and the valve core of the second shut-off valve.

9. The ultra-high pressure exhaust control valve assembly for a hydrogen refueling station compressor according to claim 1, characterized in that, The valve cores of the first shut-off valve, the first main valve, the second main valve, and the second shut-off valve are in a conical fit with the inner wall of the first channel.

10. A hydrogen storage system, characterized in that, Includes the exhaust ultra-high pressure control valve assembly for hydrogen refueling station compressors as described in any one of claims 1 to 9.

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