A sequential hydrogen supply valve control device

Abstract

This invention discloses a sequential hydrogen supply valve control device, including a gas filling module and a valve control module. The first valve control component includes a first valve body and a first valve core. The first valve core divides the interior of the first valve body into a first high-pressure chamber, a first low-pressure chamber, and a first detection chamber. The first valve body is also provided with a first high-pressure inlet communicating with the first high-pressure chamber, a first low-pressure inlet communicating with the first low-pressure chamber, a first gas detection port communicating with the first detection chamber, and a first gas outlet. The first low-pressure inlet is used to connect with a first gas storage source, the first high-pressure inlet is used to connect with a second gas storage source, the first gas outlet supplies hydrogen to the gas-using equipment, and the first gas detection port is used to connect with the gas-using equipment so that the first detection gas pressure in the first detection chamber can reflect the gas pressure contained in the gas-using equipment. The pressure difference between the first detection gas pressure and the first supply gas pressure can drive the first valve core to move in the first valve body. This design has a simple structure and low layout and maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of hydrogen supply equipment technology, and in particular to a sequential hydrogen supply valve control device. Background Technology

[0002] With the increasing promotion of hydrogen energy, hydrogen refueling stations have been established in various regions. The hydrogen supply equipment in the existing hydrogen refueling stations all use the pressure difference between the high-pressure hydrogen storage tank and the vehicle's gas cylinder to refuel the vehicle's gas cylinder. When the pressure difference between the two sides approaches zero, the hydrogen storage tank can no longer consume the remaining hydrogen to refuel the vehicle's gas cylinder.

[0003] Furthermore, hydrogen supply equipment is usually equipped with multiple hydrogen storage tanks. When refueling a vehicle, in order to make full use of the hydrogen in each storage tank, the storage tanks need to be used in sequence. Since the gas pressure in the vehicle's cylinder is low at the beginning of refueling, the storage tank with the relatively low internal pressure is used first to refuel the vehicle's cylinder. As the gas pressure in the vehicle's cylinder gradually increases and approaches the pressure of the storage tank that is currently supplying hydrogen, the system switches to the next storage tank with a relatively higher pressure for hydrogen supply.

[0004] In the past, hydrogen supply equipment controlled the timing of switching hydrogen storage tanks by installing a pressure sensor at the hydrogen supply pipeline. The pressure sensor then transmitted the detection signal to the controller, which in turn controlled the corresponding electrically controlled valves to achieve the switching of hydrogen storage tanks. However, this method required the use of multiple pressure sensors or flow sensors, controllers, and multiple electrically controlled valves, resulting in a complex structure, high cost, and the need for a large number of pipe joints, leading to a high leakage rate and high maintenance costs. Summary of the Invention

[0005] This invention aims to at least solve one of the technical problems existing in the prior art. To this end, this invention proposes a sequential hydrogen supply valve control device, which has a simple structure, low layout and maintenance costs, and achieves automatic sequential switching.

[0006] According to a first aspect of the present invention, a sequential hydrogen supply valve control device is applied to a gas storage device to supply hydrogen to a gas-consuming device. The gas storage device includes at least a first gas source and a second gas source. The sequential hydrogen supply valve control device includes: a gas filling module for connection to the gas-consuming device; and a valve control module including at least one first valve control component. The first valve control component includes a first valve body and a first valve core. The first valve core is movably disposed within the first valve body to divide the interior of the first valve body into a first high-pressure chamber, a first low-pressure chamber, and a first detection chamber. The first valve body is further provided with a first high-pressure inlet communicating with the first high-pressure chamber, a first low-pressure inlet communicating with the first low-pressure chamber, a first gas detection port communicating with the first detection chamber, and a first gas outlet. The first low-pressure inlet is used to connect with the first gas source. The first high-pressure inlet is used to connect with the second gas storage source, the first outlet is connected to the inflation module to supply hydrogen to the gas-using equipment through the inflation module, and the first gas detection port is used to connect to the gas-using equipment so that the first detection gas pressure in the first detection chamber can reflect the gas pressure contained in the gas-using equipment. The pressure difference between the first detection gas pressure and the first supply gas pressure in the first low-pressure chamber can drive the first valve core to move in the first valve body, so that the first valve control component switches between at least a first state and a second state. In the first state, the first low-pressure chamber is connected to the first outlet, and the first high-pressure chamber is closed to the first outlet. In the second state, the first low-pressure chamber is closed to the first outlet, and the first high-pressure chamber is connected to the first outlet.

[0007] A sequential hydrogen supply valve control device according to an embodiment of the present invention has at least the following beneficial effects:

[0008] This invention relates to a sequential hydrogen supply valve control device. When the gas filling module is connected to the gas-using equipment, the hydrogen content inside the equipment is low, and the holding pressure is also low. The gas pressure provided by the first gas storage source makes the first supply gas pressure higher than the first detection gas pressure reflecting the holding pressure. The first valve control component is in a first state. In the first state, the first low-pressure chamber is connected to the first gas outlet, and the first high-pressure chamber is closed to the first gas outlet. The first gas storage source supplies hydrogen to the gas-using equipment. As the hydrogen content in the gas-using equipment increases, the holding pressure gradually rises. The first detection gas pressure approaches the first supply gas pressure, and the first valve core moves, causing the first valve control component to switch from the first state to the second state. In the second state, the first low-pressure chamber is closed to the first gas outlet, and the first high-pressure chamber is connected to the first gas outlet, thereby automatically switching to the second gas storage source supplying hydrogen to the gas-using equipment. This design has a simple structure, low layout and maintenance costs, and achieves automatic sequential switching.

[0009] According to some embodiments of the present invention, the first valve core includes a piston, the first valve body is provided with a movable channel, the first low-pressure chamber and the first detection chamber are respectively formed at both ends of the piston, the first high-pressure chamber is formed on the side of the piston, the pressure difference between the first detection air pressure and the first supply air pressure can drive the piston to move in the movable channel, and along the movement path of the piston, the first air outlet is located between the first low-pressure air inlet and the first high-pressure air inlet.

[0010] According to some embodiments of the present invention, the first valve core further includes a reset member connected to the piston member to drive the piston member to a second state.

[0011] According to some embodiments of the present invention, the reset member includes a spring located in the first detection chamber, one end of the spring abutting against the piston member, and the other end of the spring abutting against the inner wall of the first valve body.

[0012] According to some embodiments of the present invention, the sidewall of the piston is recessed to form the first high-pressure chamber.

[0013] According to some embodiments of the present invention, the sidewall of the piston member is provided with a groove in the circumferential direction, and the groove defines the first high-pressure chamber between the groove and the inner wall of the first valve body.

[0014] According to some embodiments of the present invention, the first valve body is further provided with a pressurization channel. When the piston moves from the first state to the second state, the first valve control assembly also has a third state. In the third state, the first low-pressure chamber is closed to the first air outlet, the first high-pressure chamber is closed to the first air outlet, the first high-pressure chamber is connected to the first detection chamber through the pressurization channel, and in both the first state and the second state, the piston blocks and closes the pressurization channel.

[0015] According to some embodiments of the present invention, the gas storage device further includes a third gas storage source, and the valve control module further includes a cascaded valve control unit. The cascaded valve control unit includes a second valve control assembly, which includes a second valve body and a second valve core. The second valve core is movably disposed within the second valve body to divide the interior of the second valve body into a second high-pressure chamber, a second low-pressure chamber, and a second detection chamber. The second valve body is further provided with a second high-pressure inlet communicating with the second high-pressure chamber, a second low-pressure inlet communicating with the second low-pressure chamber, a second gas detection port communicating with the second detection chamber, and a second gas outlet. The second low-pressure inlet is used to connect with the second gas storage source, and the second high-pressure inlet is used to connect with the third gas storage source. The first high-pressure inlet is connected to the... The second air outlet is connected to enable communication with the second air source via the second low-pressure chamber or with the third air source via the second high-pressure chamber. The second air detection port is used to connect with the gas-using equipment so that the second detection air pressure in the second detection chamber can reflect the gas pressure contained in the gas-using equipment. The pressure difference between the second detection air pressure and the second supply air pressure in the second low-pressure chamber can drive the second valve core to move in the second valve body, so that the second valve control assembly switches between at least the fourth state and the fifth state. In the fourth state, the second low-pressure chamber is connected to the second air outlet, and the second high-pressure chamber is closed to the second air outlet. In the fifth state, the second low-pressure chamber is closed to the second air outlet, and the second high-pressure chamber is connected to the second air outlet.

[0016] According to some embodiments of the present invention, the inflation module includes a switching valve and an air supply pipeline. One end of the switching valve is connected to the first air outlet. The switching valve is connected to the air-using equipment through the air supply pipeline. The first air detection port and the second air detection port are both connected to the air supply pipeline.

[0017] According to some embodiments of the present invention, the gas storage device further includes a third gas storage source, and there are multiple second gas storage sources. The valve control module further includes a cascaded valve control unit, which includes multiple second valve control components connected in sequence. Each second valve control component includes a second valve body and a second valve core. The second valve core is movably disposed within the second valve body to divide the interior of the second valve body into a second high-pressure chamber, a second low-pressure chamber, and a second detection chamber. The second valve body is also provided with a second high-pressure inlet communicating with the second high-pressure chamber, a second low-pressure inlet communicating with the second low-pressure chamber, a second detection port communicating with the second detection chamber, and a second outlet. The second low-pressure inlets of each second valve control component are used to connect to the second gas storage source in a one-to-one correspondence. The second outlet of the second valve control component located at the first end of the cascaded valve control unit is connected to the first high-pressure inlet. The second high-pressure air inlet of the second valve control component located at the tail end of the cascaded valve control unit is used to connect with the third gas storage source. The second high-pressure air inlets of the other second valve control components are connected with the second air outlets of the adjacent second valve control components. Each second gas detection port is used to connect with the gas-using equipment so that the second detection gas pressure in the second detection chamber can reflect the gas pressure contained in the gas-using equipment. The pressure difference between the second detection gas pressure and the second supply gas pressure in the second low-pressure chamber can drive the second valve core to move in the second valve body, so that the second valve control component switches at least between the fourth state and the fifth state. In the fourth state, the second low-pressure chamber is connected to the second air outlet, and the second high-pressure chamber is closed to the second air outlet. In the fifth state, the second low-pressure chamber is closed to the second air outlet, and the second high-pressure chamber is connected to the second air outlet.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 A schematic diagram of the structure of a first state in one embodiment of the first valve control assembly;

[0021] Figure 2 A schematic diagram of the third state of one embodiment of the first valve control assembly;

[0022] Figure 3 A schematic diagram of the second state of one embodiment of the first valve control assembly;

[0023] Figure 4This is a schematic diagram of a hydrogenation process in one embodiment of the sequential hydrogen supply valve control device of the present invention.

[0024] Figure 5 This is a schematic diagram of the second hydrogenation process in one embodiment of the sequential hydrogen supply valve control device of the present invention.

[0025] Figure 6 This is a schematic diagram of the third hydrogenation process in one embodiment of the sequential hydrogen supply valve control device of the present invention.

[0026] Figure label:

[0027] First valve control assembly 100; First valve body 110; Active channel 111; Pressurization channel 112; First valve core 120; Groove 121; First high-pressure chamber 130; First high-pressure air inlet 131; First low-pressure chamber 140; First low-pressure air inlet 141; First detection chamber 150; First air detection port 151; First air outlet 160; Reset component 170; Inflation module 200; Switch valve 210; Gas transmission pipeline 220; Second valve control assembly 300; Second valve body 310; Second valve core 320; Second high-pressure chamber 330; Second high-pressure air inlet 331; Second low-pressure chamber 340; Second low-pressure air inlet 341; Second detection chamber 350; Second air detection port 351; Second air outlet 360; First gas storage source 410; Second gas storage source 420; Third gas storage source 430. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this invention, it should be understood that the orientation descriptions, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer", indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0030] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figures 1-6As shown, a sequential hydrogen supply valve control device according to a first aspect embodiment of the present invention is applied to a gas storage device to supply hydrogen to a gas-consuming device. The gas storage device includes at least a first gas source 410 and a second gas source 420. The sequential hydrogen supply valve control device includes a gas filling module 200 and a valve control module. The gas filling module 200 is used to connect to the gas-consuming device. The valve control module includes at least one first valve control component 100. The first valve control component 100 includes a first valve body 110 and a first valve core 120. A valve core 120 is movably disposed within the first valve body 110 to divide the interior of the first valve body 110 into a first high-pressure chamber 130, a first low-pressure chamber 140, and a first detection chamber 150. The first valve body 110 is also provided with a first high-pressure air inlet 131 communicating with the first high-pressure chamber 130, a first low-pressure air inlet 141 communicating with the first low-pressure chamber 140, a first air detection port 151 communicating with the first detection chamber 150, and a first air outlet 160. The first low-pressure air inlet 130... 41 is used to connect with the first gas storage source 410, the first high-pressure inlet 131 is used to connect with the second gas storage source 420, the first outlet 160 is connected to the gas filling module 200 to supply hydrogen to the gas-using equipment through the gas filling module 200, and the first gas detection port 151 is used to connect with the gas-using equipment so that the first detection gas pressure in the first detection chamber 150 can reflect the gas pressure contained in the gas-using equipment. The pressure difference between the first detection gas pressure and the first supply gas pressure in the first low-pressure chamber 140 can drive the first valve core 120 to move in the first valve body 110 so that the first valve control assembly 100 switches between at least a first state and a second state. In the first state, the first low-pressure chamber 140 is connected to the first outlet 160 and the first high-pressure chamber 130 is closed to the first outlet 160. In the second state, the first low-pressure chamber 140 is closed to the first outlet 160 and the first high-pressure chamber 130 is connected to the first outlet 160.

[0033] In some embodiments of the present invention, the inflation module 200 may include a switching valve 210 and an air supply pipe 220. One end of the switching valve 210 is connected to the first air outlet 160, and the switching valve 210 is connected to the air-using equipment through the air supply pipe 220.

[0034] The switching valve 210 can be an electrically controlled valve, a manual valve, a check valve, a regulating valve, etc. The first high-pressure inlet 131 and the first low-pressure inlet 141 can be connected to the first gas storage source 410 and the second gas storage source 420 respectively through the gas inlet pipe. The first gas storage source 410 and the second gas storage source 420 can both be hydrogen storage tanks. The internal gas pressure of the second gas storage source 420 is higher than that of the first gas storage source 410. When the switching valve 210 is opened, the first gas storage source 410 and the second gas storage source 420 can supply hydrogen to the gas-using equipment in the corresponding state.

[0035] In addition, it should be noted that a gas storage container is also installed inside the gas-using equipment. The gas storage container forms a holding pressure according to the amount of hydrogen. When the amount of hydrogen increases, the holding pressure will also increase accordingly. Since the first detection chamber 150 is connected to the gas storage container through the first gas detection port 151 and the gas transmission pipeline 220, the first detection pressure can reflect the holding pressure of the gas-using equipment.

[0036] In this invention, a sequential hydrogen supply valve control device is used. When the gas filling module 200 is connected to the gas-using equipment, the hydrogen content inside the equipment is low, and the holding pressure is also low. The gas pressure provided by the first gas storage source 410 makes the first supply gas pressure higher than the first detection gas pressure reflecting the holding pressure. The first valve control component 100 is in a first state. In this first state, the first low-pressure chamber 140 is connected to the first gas outlet 160, and the first high-pressure chamber 130 is closed to the first gas outlet 160. The first gas storage source 410 supplies hydrogen to the gas-using equipment, and then... As the hydrogen content in the gas-using equipment increases, the gas pressure gradually rises. When the first detection gas pressure approaches the first supply gas pressure, the first valve core 120 moves, causing the first valve control component 100 to switch from the first state to the second state. In the second state, the first low-pressure chamber 140 is closed to the first outlet 160, and the first high-pressure chamber 130 is connected to the first outlet 160, thereby automatically switching to supplying hydrogen to the gas-using equipment from the second gas storage source 420. This design has a simple structure, low layout and maintenance costs, and achieves automatic sequential switching.

[0037] In some embodiments of the present invention, such as Figures 1-3 As shown, the first valve core 120 includes a piston, and the first valve body 110 is provided with a movable channel 111. The first low-pressure chamber 140 and the first detection chamber 150 are respectively formed at both ends of the piston. The first high-pressure chamber 130 is formed on the side of the piston. The pressure difference between the first detection air pressure and the first supply air pressure can drive the piston to move in the movable channel 111. Along the movement path of the piston, the first air outlet 160 is located between the first low-pressure air inlet 141 and the first high-pressure air inlet 131.

[0038] The first low-pressure chamber 140 and the first detection chamber 150 are each formed at both ends of the piston, while the first high-pressure chamber 130 is located on the side of the piston. Therefore, the air pressure in the first high-pressure chamber 130 acts on the piston and the force is canceled out, so the piston will not move toward either end of the moving channel 111. What can cause the piston to move toward either end of the moving channel 111 is the pressure difference between the first supply air pressure and the first detection air pressure. Due to the pressure difference, an imbalance of force is formed, which causes the piston to move. In the first state, the position of the piston separates the first high-pressure chamber 130 and the first air outlet 160, so they are not connected, while the first low-pressure chamber 140 can be connected to the first air outlet 160. In the second state, the position of the piston separates the first low-pressure chamber 140 and the first air outlet 160, so they are not connected, while the first high-pressure chamber 130 is connected to the first air outlet 160.

[0039] In some embodiments of the present invention, the first valve core 120 may also be rotatably disposed within the first valve body 110. The first low-pressure chamber 140 and the first detection chamber 150 are respectively located on both sides of the diaphragm. The magnitude of the air pressure difference can drive the diaphragm to swing, thereby switching between the first state and the second state.

[0040] In some embodiments of the present invention, the first valve core 120 further includes a reset member 170, which is connected to the piston member to drive the piston member to move towards the second state. Generally speaking, in order to prevent hydrogen backflow or to improve the filling efficiency, when the first supply gas pressure is slightly greater than the containment gas pressure, the piston member also needs to interact to switch to the second state. Therefore, a reset member 170 is provided on the piston member. The reset member 170 can apply force to the piston member. When the force applied to the piston member by the reset member 170 and the force applied to the piston member by the first detection gas pressure are greater than the force applied to the piston member by the first supply gas pressure, the piston member moves from the first state position of the first valve control assembly 100 to the second state position.

[0041] In some embodiments of the present invention, such as Figures 1-3 As shown, the reset member 170 includes a spring located in the first detection chamber 150. One end of the spring abuts against the piston member, and the other end of the spring abuts against the inner wall of the first valve body 110.

[0042] The spring is made of an alloy material and has gaps that do not obstruct the transmission of gas.

[0043] The reset element 170 may also be a tension spring disposed in the first low-pressure chamber 140, or the reset element 170 may be a counterweight disposed on the piston element, etc.

[0044] In some embodiments of the invention, the sidewall of the piston is recessed to form the first high-pressure chamber 130.

[0045] The piston is cylindrical, and the movable channel 111 can be a straight segment. One end face of the piston and the inner wall of one end of the movable channel 111 form a first low-pressure chamber 140, and the other end face of the piston and the inner wall of the other end of the movable channel 111 form a first detection chamber 150. The side wall of the piston is concave, and the concave side wall of the piston and the inner side wall of the movable channel 111 form a first high-pressure chamber 130. The first low-pressure air inlet 141 is located at one end of the movable channel 111, the first air detection port 151 is located at the other end of the movable channel 111, the first air outlet 160 and the first high-pressure air inlet 131 are located on the side wall of the movable channel 111, and along the movement path of the piston, the first air outlet 160 is located between the first low-pressure air inlet 141 and the first high-pressure air inlet 131.

[0046] Specifically, the piston component has a circumferentially circumferentially grooved 121 on its side wall. The grooved 121 and the inner wall of the first valve body 110 define the first high-pressure chamber 130. The circumferentially circumferentially grooved 121 on the side wall of the piston component is annular, so there are more positions where the grooved 121 communicates and cooperates with the inner wall of the first valve body 110. The first valve body 110 can more reasonably set the positions of the first high-pressure inlet 131 and the first outlet 160. When the first high-pressure chamber 130 and the first outlet 160 are connected, the cross section for transporting hydrogen is wider, which is beneficial to the transmission of hydrogen.

[0047] Because the first outlet 160 is located between the first low-pressure inlet 141 and the first high-pressure inlet 131 along the piston's movement path, there may be a position where, during the piston's movement from the first state to the second state, such as... Figure 2 As shown, the piston blocks the first outlet 160. At this time, hydrogen cannot be transmitted to the gas-using equipment, the first detection pressure will not change much, and the first gas storage source 410 will not output hydrogen, so the first supply pressure will not change much either. If the forces on both ends of the piston are balanced and the piston stops moving, the piston will not be able to smoothly transition from the first state to the second state.

[0048] Therefore, in some embodiments of the present invention, such as Figures 1-3 In the first valve body 110, a pressurization channel 112 is also provided. When the piston moves from the first state to the second state, the first valve control assembly 100 also has a third state. In the third state, the first low-pressure chamber 140 is closed to the first air outlet 160, the first high-pressure chamber 130 is closed to the first air outlet 160, the first high-pressure chamber 130 is connected to the first detection chamber 150 through the pressurization channel 112, and in both the first state and the second state, the piston blocks and closes the pressurization channel 112.

[0049] In the third state, the first high-pressure chamber 130 is connected to the first detection chamber 150 through the pressurization channel 112. Hydrogen is supplied to the first detection chamber 150 by the second gas storage source 420, thus the first detection gas pressure continues to increase, and the piston can smoothly transition to the second state. The two ends of the pressurization channel 112 are respectively connected to the moving channel 111, and the two ends of the pressurization channel 112 are arranged back and forth along the moving path of the piston. In the first and second states, the piston can block at least one end of the pressurization channel 112, thereby achieving the goal of blocking and shutting off the pressurization channel 112 in both the first and second states.

[0050] In some embodiments of the present invention, such as Figures 4-6 As shown, the gas storage device further includes a third gas storage source 430, and the valve control module further includes a cascaded valve control unit. The cascaded valve control unit includes a second valve control component 300, which includes a second valve body 310 and a second valve core 320. The second valve core 320 is movably disposed within the second valve body 310 to divide the interior of the second valve body 310 into a second high-pressure chamber 330, a second low-pressure chamber 340, and a second detection chamber 350. The second valve body 310 is also provided with a second high-pressure inlet 331 communicating with the second high-pressure chamber 330, a second low-pressure inlet 341 communicating with the second low-pressure chamber 340, a second gas detection port 351 communicating with the second detection chamber 350, and a second outlet 360. The second low-pressure inlet 341 is used to connect with the second gas storage source 420, and the second high-pressure inlet 331 is used to connect with the third gas storage source 430. The first high-pressure inlet 360... The second valve core 320 is connected to the second valve body 310 to be connected to the second outlet 360 so that it can be connected to the second gas source 420 through the second low-pressure chamber 340 or to the third gas source 430 through the second high-pressure chamber 330. The second gas detection port 351 is used to connect to the gas-using equipment so that the second detection gas pressure in the second detection chamber 350 can reflect the gas pressure contained in the gas-using equipment. The pressure difference between the second detection gas pressure and the second supply gas pressure in the second low-pressure chamber 340 can drive the second valve core 320 to move in the second valve body 310 so that the second valve control assembly 300 switches at least between the fourth state and the fifth state. In the fourth state, the second low-pressure chamber 340 is connected to the second outlet 360 and the second high-pressure chamber 330 is closed to the second outlet 360. In the fifth state, the second low-pressure chamber 340 is closed to the second outlet 360 and the second high-pressure chamber 330 is connected to the second outlet 360.

[0051] For cases with multiple gas storage sources, a second valve control component 300 can be added. The structure of the second valve control component 300 is roughly the same as that of the first valve control component 100. In the above embodiment, the first high-pressure air inlet 131 of the first valve control component 100 was originally directly connected to the second gas storage source 420. However, in this embodiment, due to the addition of a third gas storage source 430, the first high-pressure air inlet 131 of the first valve control component 100 is connected to the second air outlet 360 of the second valve control component 300, while the second gas storage source 420 is connected to the second low-pressure air inlet 341, and the third gas storage source 430 is connected to the second high-pressure air inlet 331.

[0052] It should be noted that the gas pressure of the third gas storage source 430 is greater than that of the second gas storage source 420, and the gas pressure of the second gas storage source 420 is greater than that of the first gas storage source 410. This is important to note during the initial hydrogen addition to the gas-using equipment. Figure 4 As shown, the first valve control component 100 is in the first state, the second valve control component 300 is in the fourth state, and the first gas storage source 410 supplies hydrogen to the gas-using equipment. As the gas pressure in the gas-using equipment increases, the first valve control component 100 switches to the second state, as shown. Figure 5 As shown, since the gas pressure of the second gas storage source 420 is relatively high, the second valve control component 300 is still in the fourth state. At this time, the hydrogen in the second gas storage source 420 is transmitted to the gas filling module 200 through the second low-pressure inlet 341, the second low-pressure chamber 340, the second outlet 360, the first high-pressure inlet 131, the first high-pressure chamber 130, and the first outlet 160 to supply hydrogen to the gas-using equipment. When the gas pressure of the gas-using equipment further increases, the second valve control component 300 switches to the fifth state, as shown. Figure 6 As shown, the second low-pressure chamber 340 is disconnected from the second gas outlet 360, while the second high-pressure chamber 330 is connected to the second gas outlet 360, and hydrogen is supplied to the gas-using equipment by the third gas storage source 430.

[0053] This design can automatically switch between different gas storage sources to add hydrogen to the gas-using equipment as the gas pressure gradually increases. It has a simple structure and low layout and maintenance costs.

[0054] In some embodiments of the present invention, the first gas detection port 151 and the second gas detection port 351 are both connected to the gas transmission pipeline 220, and the first detection chamber 150 and the second detection chamber 350 are both connected to the gas-using equipment. Thus, the first detection gas pressure and the second detection gas pressure can be formed according to the contained gas pressure, and the switching state of the first valve control component 100 and the second valve control component 300 can be controlled.

[0055] In some embodiments of the present invention, the gas storage device further includes a third gas storage source 430, and there are multiple second gas storage sources 420. The valve control module further includes a cascaded valve control unit, which includes multiple second valve control components 300 connected in sequence. The second valve control component 300 includes a second valve body 310 and a second valve core 320. The second valve core 320 is movably disposed within the second valve body 310 to divide the interior of the second valve body 310 into a second high-pressure chamber 330, a second low-pressure chamber 340, and a second detection chamber 35. 0. The second valve body 310 is further provided with a second high-pressure air inlet 331 communicating with the second high-pressure chamber 330, a second low-pressure air inlet 341 communicating with the second low-pressure chamber 340, a second air detection port 351 communicating with the second detection chamber 350, and a second air outlet 360. The second low-pressure air inlets 341 of each of the second valve control components 300 are used to connect one-to-one with the second air storage source 420. The second air outlet 360 of the second valve control component 300 located at the first end of the cascaded valve control unit is connected to the first high-pressure air inlet 331. The second high-pressure air inlet 331 of the second valve control assembly 300, located at the tail end of the cascaded valve control unit, is connected to the third gas storage source 430. The second high-pressure air inlets 331 of the other second valve control assemblies 300 are connected to the second air outlets 360 of adjacent second valve control assemblies 300. Each second gas detection port 351 is connected to a gas-using device so that the second detection gas pressure in the second detection chamber 350 can reflect the gas-using device's capacity pressure. The second detection gas pressure is related to the second low-pressure chamber 350. The pressure difference change of the second supply air pressure within 40 can drive the second valve core 320 to move within the second valve body 310, so that the second valve control assembly 300 switches between at least a fourth state and a fifth state. In the fourth state, the second low-pressure chamber 340 is connected to the second air outlet 360, and the second high-pressure chamber 330 is closed to the second air outlet 360. In the fifth state, the second low-pressure chamber 340 is closed to the second air outlet 360, and the second high-pressure chamber 330 is connected to the second air outlet 360.

[0056] The switching principle here is basically the same as that of a cascaded valve control unit that includes only one second valve control component 300. It will not be elaborated here. Using the structure of this cascaded valve control unit, it is possible to switch to any number of gas storage sources. The layout and maintenance costs are low and it is easy to promote and use.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A sequential hydrogen supply valve control device, used in a gas storage facility to supply hydrogen to gas-consuming equipment, wherein, The gas storage device includes at least a first gas storage source and a second gas storage source, characterized in that the sequential hydrogen supply valve control device includes: Inflatable module for connection to gas-using equipment; A valve control module includes at least one first valve control component. The first valve control component includes a first valve body and a first valve core. The first valve core is movably disposed within the first valve body to divide the interior of the first valve body into a first high-pressure chamber, a first low-pressure chamber, and a first detection chamber. The first valve body is further provided with a first high-pressure air inlet communicating with the first high-pressure chamber, a first low-pressure air inlet communicating with the first low-pressure chamber, a first gas detection port communicating with the first detection chamber, and a first air outlet. The first low-pressure air inlet is used to connect to a first gas storage source, the first high-pressure air inlet is used to connect to a second gas storage source, and the first air outlet is connected to the inflation module to allow inflation... The assembly supplies hydrogen to the gas-using equipment. The first gas detection port is used to connect to the gas-using equipment so that the first detection gas pressure in the first detection chamber can reflect the gas pressure contained in the gas-using equipment. The pressure difference between the first detection gas pressure and the first supply gas pressure in the first low-pressure chamber can drive the first valve core to move in the first valve body, so that the first valve control assembly switches between at least a first state and a second state. In the first state, the first low-pressure chamber is connected to the first gas outlet, and the first high-pressure chamber is closed to the first gas outlet. In the second state, the first low-pressure chamber is closed to the first gas outlet, and the first high-pressure chamber is connected to the first gas outlet. The first valve core includes a piston, and the first valve body is provided with a movable channel. The first low-pressure chamber and the first detection chamber are respectively formed at both ends of the piston. The first high-pressure chamber is formed on the side of the piston. The pressure difference between the first detection air pressure and the first supply air pressure can drive the piston to move in the movable channel. Along the movement path of the piston, the first air outlet is located between the first low-pressure air inlet and the first high-pressure air inlet. The first valve body is also provided with a pressurization channel. When the piston moves from the first state to the second state, the first valve control assembly also has a third state. In the third state, the first low-pressure chamber is closed to the first air outlet, the first high-pressure chamber is closed to the first air outlet, the first high-pressure chamber is connected to the first detection chamber through the pressurization channel, and in both the first state and the second state, the piston blocks and closes the pressurization channel.

2. The sequential hydrogen supply valve control device according to claim 1, characterized in that: The first valve core also includes a reset member, which is connected to the piston member to drive the piston member to move towards a second state.

3. The sequential hydrogen supply valve control device according to claim 2, characterized in that: The reset component includes a spring located in the first detection chamber. One end of the spring abuts against the piston component, and the other end of the spring abuts against the inner wall of the first valve body.

4. The sequential hydrogen supply valve control device according to claim 2, characterized in that: The sidewall of the piston is recessed to form the first high-pressure chamber.

5. The sequential hydrogen supply valve control device according to claim 4, characterized in that: The piston component has a circumferential groove on its side wall, and the groove defines the first high-pressure chamber between itself and the inner wall of the first valve body.

6. A sequential hydrogen supply valve control device according to claim 1, wherein the gas storage device further includes a third gas storage source, characterized in that the valve control module further includes a cascaded valve control unit, the cascaded valve control unit including a second valve control component, the second valve control component including a second valve body and a second valve core, the second valve core being movably disposed within the second valve body to divide the interior of the second valve body into a second high-pressure chamber, a second low-pressure chamber, and a second detection chamber, the second valve body further being provided with a second high-pressure inlet communicating with the second high-pressure chamber, a second low-pressure inlet communicating with the second low-pressure chamber, a second gas detection port communicating with the second detection chamber, and a second gas outlet, the second low-pressure inlet being used to connect with the second gas storage source, the second high-pressure inlet being used to connect with the third gas storage source, the first high-pressure inlet being connected to the second gas outlet to enable communication with the second gas storage source through the second low-pressure chamber or with the third gas storage source through the second high-pressure chamber, the second gas detection port being used to connect with a gas-using device so that the second detection gas pressure in the second detection chamber can reflect the gas pressure contained in the gas-using device, wherein... The pressure difference between the second detection air pressure and the second supply air pressure in the second low-pressure chamber can drive the second valve core to move in the second valve body, so that the second valve control assembly switches between at least a fourth state and a fifth state. In the fourth state, the second low-pressure chamber is connected to the second air outlet, and the second high-pressure chamber is closed to the second air outlet. In the fifth state, the second low-pressure chamber is closed to the second air outlet, and the second high-pressure chamber is connected to the second air outlet.

7. The sequential hydrogen supply valve control device according to claim 6, characterized in that: The inflation module includes a switch valve and an air supply pipe. One end of the switch valve is connected to the first air outlet. The switch valve is connected to the air-using equipment through the air supply pipe. The first air detection port and the second air detection port are both connected to the air supply pipe.

8. The sequential hydrogen supply valve control device according to claim 1, wherein the gas storage device further includes a third gas storage source, and there are multiple second gas storage sources, characterized in that: The valve control module further includes a cascaded valve control unit, which includes multiple second valve control components connected in sequence. Each second valve control component includes a second valve body and a second valve core. The second valve core is movably disposed within the second valve body to divide the interior of the second valve body into a second high-pressure chamber, a second low-pressure chamber, and a second detection chamber. The second valve body is also provided with a second high-pressure inlet communicating with the second high-pressure chamber, a second low-pressure inlet communicating with the second low-pressure chamber, a second detection port communicating with the second detection chamber, and a second outlet. The second low-pressure inlets of each second valve control component are used to connect to a second gas storage source in a one-to-one correspondence. The second outlet of the second valve control component located at the first end of the cascaded valve control unit connects to the first high-pressure inlet. The second valve control component located at the tail end of the cascaded valve control unit connects to the first high-pressure inlet. The second high-pressure air inlet of the component is used to connect with the third gas storage source. The second high-pressure air inlets of the other second valve control components are connected with the second air outlets of the adjacent second valve control components. Each second gas detection port is used to connect with the gas-using equipment so that the second detection air pressure in the second detection chamber can reflect the gas pressure contained in the gas-using equipment. The pressure difference between the second detection air pressure and the second supply air pressure in the second low-pressure chamber can drive the second valve core to move in the second valve body, so that the second valve control component switches at least between the fourth state and the fifth state. In the fourth state, the second low-pressure chamber is connected to the second air outlet, and the second high-pressure chamber is closed to the second air outlet. In the fifth state, the second low-pressure chamber is closed to the second air outlet, and the second high-pressure chamber is connected to the second air outlet.

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