Fuel cell hydrogen valve with safety discharge function

Abstract

The utility model discloses a fuel cell hydrogen valve with a safety discharge function, which comprises a valve body, a valve core, a valve core, a valve core and a valve core, the air inlet pipe is arranged at the first end of the channel; the air outlet pipe is arranged at the second end of the channel and used for being communicated with the container; the adjusting assembly is arranged in the channel and used for controlling communication or blocking between the air inlet pipe and the air outlet pipe; the pressure relief assembly is arranged on the side, close to the gas outlet pipe, of the channel and used for releasing hydrogen when the pressure in the container is too large. According to the fuel cell hydrogen valve with the safety relief function, provided by the invention, the charging of hydrogen can be realized through the valve, and a certain amount of hydrogen can be released through the pressure relief assembly when the pressure of hydrogen in a container is too high, so that the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, and more particularly to a fuel cell hydrogen valve with a safety discharge function. Background Art

[0002] Currently, most fuel cell hydrogen valves on the market use traditional on-off valve designs. These valves play a vital role in controlling hydrogen flow and shutting off the hydrogen supply. However, as fuel cell system power increases and operating environments become more complex, traditional valves must cope with extreme conditions such as high-pressure, high-purity hydrogen. In abnormal situations (such as system overpressure and hydrogen leaks), hydrogen must be released quickly and safely to avoid accidents.

[0003] Traditional valves often lack effective safety relief mechanisms. Some safety relief valves use mechanical triggering mechanisms, which are slow to respond and susceptible to environmental influences. Others rely on electronic control systems, which, while capable of precise control, are costly and heavily dependent on electricity, posing potential safety risks.

[0004] In summary, how to improve the safety of valves is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] In view of this, the purpose of the present invention is to provide a fuel cell hydrogen valve with a safe discharge function, through which hydrogen can be charged and filled. When the hydrogen pressure in the container is too high, a certain amount of hydrogen can be released through the pressure relief component, thereby improving safety.

[0006] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0007] A fuel cell hydrogen valve with a safety discharge function, comprising:

[0008] a valve body, the interior of which is provided with a passage for hydrogen circulation;

[0009] an air inlet pipe, disposed at a first end of the passage;

[0010] an air outlet pipe, provided at the second end of the channel, the air outlet pipe being used to communicate with the container;

[0011] a regulating component, disposed in the passage and used to control the communication or blockage between the air inlet pipe and the air outlet pipe;

[0012] A pressure relief component is provided on a side of the channel close to the gas outlet pipe, and is used for releasing the hydrogen when the pressure in the container is too high.

[0013] Preferably, the pressure relief assembly includes a movable block and a first elastic member, the movable block is connected to the valve body through the first elastic member, an exhaust hole is provided on the movable block, the first end of the exhaust hole is communicated with the channel, and the second end of the exhaust hole is arranged perpendicular to the first end. When the pulling force of the elastic member is less than the air pressure in the channel, the movable block moves toward the outside of the valve body and causes the exhaust hole to extend out of the valve body.

[0014] Preferably, the adjusting assembly includes a rotating push rod, a push core, a sealing ball and a second elastic member, the rotating push rod is threadedly connected to the valve body, the push core is fixedly connected to the rotating push rod and is arranged inside the valve body, the second elastic member abuts against the sealing ball, and the second elastic member is used to push the sealing ball to achieve sealing between the air inlet pipe and the air outlet pipe.

[0015] Preferably, a first sealing cover is further included, the second elastic member is arranged in a groove on the first sealing cover, and the first sealing cover and the valve body are threadedly connected.

[0016] Preferably, a sealing port is provided in the valve body, and a peripheral surface of the sealing port facing the sealing ball is an arc-shaped surface, and the sealing ball is a spherical structure.

[0017] Preferably, the outer periphery of the top core is provided with a guide seat, and the outer periphery of the guide seat is provided with a sealing gasket.

[0018] Preferably, it further comprises a second sealing cover, which is sleeved on the rotating ejector rod and detachably connected to the valve body, and is arranged in contact with the sealing gasket.

[0019] Preferably, the surface of the sealing ball is a smooth surface, and the sealing opening is a circular hole.

[0020] Preferably, the outer periphery of the rotating ejector rod is provided with a scale for displaying the rotation angle.

[0021] Preferably, the pressure relief component is provided with a detection component and an alarm component, the detection component is used to detect whether the pressure relief component discharges the hydrogen, and the alarm component is electrically connected to the detection component and is used to alarm when the pressure relief component discharges the hydrogen.

[0022] The utility model provides a fuel cell hydrogen valve with a safe discharge function, wherein a channel is provided inside the valve body, and an air inlet pipe and an air outlet pipe are respectively provided on both sides of the channel, the air inlet pipe is connected with an air supply device, and the air outlet pipe is connected with a container, hydrogen can be introduced into the container through the air supply device, and after sufficient hydrogen is introduced into the container, the air inlet pipe and the air outlet pipe are blocked through an adjusting component to prevent hydrogen leakage, and a pressure relief component is provided between the adjusting component and the air outlet pipe, and when the pressure in the container is too high, the hydrogen in the container can be discharged in an appropriate amount through the pressure relief component to eliminate the safety hazard caused by excessive pressure in the container. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is a schematic structural diagram of a fuel cell hydrogen valve with a safety discharge function provided by the present invention.

[0025] Reference numerals:

[0026] 1-valve body; 2-inlet pipe; 3-outlet pipe; 4-second sealing cover; 5-pressure relief assembly; 6-rotating ejector pin; 7-elastic core; 8-sealing ball; 9-second elastic member; 10-first sealing cover; 11-sealing port; 12-guide seat; 13-sealing gasket. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The core of this utility model is to provide a fuel cell hydrogen valve with a safe discharge function. The valve can not only realize the charging and filling of hydrogen, but also release a certain amount of hydrogen when the pressure in the container is too high, eliminating the safety hazards caused by excessive pressure.

[0029] It should be noted that the directions or positional relationships indicated by “upper”, “lower”, “front”, “back”, etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application.

[0030] The present application provides a fuel cell hydrogen valve with a safe discharge function, comprising: a valve body 1, an air inlet pipe 2, an air outlet pipe 3, a regulating component and a pressure relief component 5;

[0031] The valve body 1 is provided with a channel for hydrogen flow inside;

[0032] The air inlet pipe 2 is provided at the first end of the passage;

[0033] An air outlet pipe 3 is provided at the second end of the channel, and the air outlet pipe 3 is used to communicate with the container;

[0034] The regulating component is arranged in the channel and is used to control the communication or blockage between the air inlet pipe 2 and the air outlet pipe 3;

[0035] The pressure relief component 5 is arranged on one side of the channel close to the gas outlet pipe 3 , and is used to release hydrogen when the pressure in the container is too high.

[0036] For details, please refer to the attached Figure 1 A channel is provided inside the valve body 1, and an outlet pipe 3 and an inlet pipe 2 are provided on the left and right sides of the channel respectively. The regulating component is provided in the middle of the channel, and the channel can be opened or closed by the regulating component. A pressure relief component 5 is provided between the regulating component and the outlet pipe 3. When hydrogen is charged, the inlet pipe 2 is connected with the gas supply component, and the outlet pipe 3 is connected with the container. The regulating component is opened to realize the connection of the channel. After the hydrogen charging is completed, the regulating component is closed to prevent hydrogen leakage. When the air pressure in the container is too high, the pressure relief component 5 can discharge the hydrogen in an appropriate amount to avoid excessive pressure in the container and reduce safety risks.

[0037] Based on the above embodiment, the pressure relief assembly 5 includes a movable block and a first elastic member. The movable block is connected to the valve body 1 through the first elastic member. An exhaust hole is provided on the movable block. The first end of the exhaust hole is connected to the channel, and the second end of the exhaust hole is arranged perpendicular to the first end. When the pulling force of the elastic member is less than the air pressure in the channel, the movable block moves toward the outside of the valve body 1 and causes the exhaust hole to extend out of the valve body 1.

[0038] Specifically, the first elastic member is generally a spring, and the spring is in a stretched state. A perforation is provided on the valve body 1, which is connected to the channel. One end of the spring is connected to the side wall of the channel, and the other end is connected to the movable block. When the air pressure in the outlet pipe 3 and the container is small, the pressure generated by the air pressure is less than the tension of the spring. In addition, a limiter is provided at the connection between the perforation and the channel to prevent the movable block from blocking the channel. In this state, hydrogen can be introduced into the outlet pipe 3 through the air inlet pipe 2. When the air pressure in the container is too high, that is, the air pressure is greater than the tension of the spring, the movable block moves toward the outside of the valve body 1 under the action of the air pressure, so that the air vent provided on the valve body 1 extends into the outside of the valve body 1, thereby allowing the hydrogen to be discharged from the valve body 1. It should be noted that under normal circumstances, the air vent is buried in the valve body 1 and abuts against the valve body 1 to prevent hydrogen from being discharged.

[0039] In some embodiments, the adjusting assembly includes a rotating push rod 6, a push core 7, a sealing ball 8 and a second elastic member 9. The rotating push rod 6 is threadedly connected to the valve body 1. The push core 7 is fixedly connected to the rotating push rod 6 and is arranged inside the valve body 1. The second elastic member 9 abuts against the sealing ball 8. The second elastic member 9 is used to push the sealing ball 8 to achieve sealing between the air inlet pipe 2 and the air outlet pipe 3.

[0040] Specifically, the rotating push rod 6 is arranged at the upper end of the valve body 1, and its outer periphery is provided with a thread and is threadedly connected to the valve body 1. The top core 7 is connected to the lower end of the rotating push rod 6. The rotation of the rotating push rod 6 can drive the top core 7 to move in the vertical direction. The sealing ball 8 and the second elastic member 9 are arranged at the lower end of the valve body 1. The second elastic member 9 is in a compressed state under normal conditions and can push the sealing ball 8 upward to achieve channel sealing. When the rotating push rod 6 rotates to a certain extent, it can drive the top core 7 to press down, so that a certain gap is generated between the sealing ball 8 and the inside of the valve body 1, so that hydrogen can circulate in the channel. After completing the hydrogen charging, the rotating push rod 6 is twisted in the opposite direction to drive the top core 7 to reset. The sealing ball 8 can reset after losing the pressure of the top core 7, thereby maintaining the channel sealing and preventing hydrogen leakage.

[0041] On the basis of the above embodiment, a first sealing cover 10 is further included. The second elastic member 9 is arranged in a groove on the first sealing cover 10. The first sealing cover 10 and the valve body 1 are threadedly connected.

[0042] Specifically, the outer periphery of the first sealing cover 10 is provided with threads, the lower end of the valve body 1 is provided with a threaded hole, the side of the first sealing cover 10 extending into the valve body 1 is provided with a groove, the second elastic member 9 is arranged in the groove, and the compression degree of the second elastic member 9 can be adjusted by rotating the first sealing cover 10. When the distance between the first sealing cover 10 and the sealing port 11 decreases, the pre-pressing force of the second elastic member 9 on the sealing ball 8 correspondingly increases. The increased pre-pressing force helps to ensure that the sealing ball 8 is more tightly attached to the sealing port 11 in the closed state, reducing the possibility of leakage. Conversely, when it is necessary to reduce the sealing force to cope with special working conditions or prolong the service life of the sealing member, the distance between the first sealing cover 10 and the sealing port 11 can be appropriately increased, and the pre-pressing force of the second elastic member 9 can be reduced.

[0043] On the basis of the above-mentioned embodiment, the sealing port 11 is arranged in the valve body 1, and the peripheral surface of the sealing port 11 towards the side of the sealing ball 8 is an arc surface, and the sealing ball 8 is a spherical structure.

[0044] Specifically, the sealing port 11 is arranged in the middle part of the channel in the valve body 1, the sealing port 11 is a through hole opened in the vertical direction, the sealing port 11 can be fully blocked by the sealing ball 8, the arrangement of the arc surface can facilitate the attachment of the sealing ball 8 and the sealing port 11, and prevent the sealing ball 8 from being extruded and damaged under the action of the second elastic member 9.

[0045] On the basis of the above-mentioned embodiment, the outer periphery of the top core 7 is sleeved with a guide seat 12, and the outer periphery of the guide seat 12 is sleeved with a sealing gasket 13.

[0046] Specifically, the hollow part in the valve body 1 can be approximately regarded as a cross-shaped structure, the channel is arranged transversely, the rotating top rod 6 and the top core 7 are arranged at the upper end of the valve body 1, the outer periphery of the top core 7 is provided with a guide seat 12, the outer periphery of the guide seat 12 is provided with a sealing gasket 13, and the guide seat 12 and the sealing gasket 13 are used in cooperation, which not only can guide the movement of the top core 7, but also can prevent hydrogen from escaping from the channel into the cavity where the top core 7 is located, thereby ensuring the sealing performance of the valve body 1.

[0047] On the basis of the above-mentioned embodiment, a second sealing cover 4 is further included, the second sealing cover 4 is sleeved with the rotating top rod 6, the second sealing cover 4 is detachably connected with the valve body 1, and the second sealing cover 4 is arranged in abutment with the sealing gasket 13.

[0048] Specifically, the second sealing cover 4 is arranged at the upper end of the valve body 1, the rotating top rod 6 and the top core 7 are arranged on the second sealing cover 4, the lower end of the second sealing cover 4 is provided with a protruding part, and the second sealing cover 4 is detachably connected with the valve body 1 through bolts or other structures, so that the guide seat 12, the sealing gasket 13 and other structures can be easily installed in the valve body 1 when the second sealing cover 4 is detached. In addition, the protruding part at the lower end of the second sealing cover 4 can extrude the sealing gasket 13 in cooperation with the inner wall of the valve body 1, thereby further avoiding gas leakage.

[0049] On the basis of the above-mentioned embodiments, the surface of the sealing ball 8 is a smooth surface, and the sealing port 11 is a circular hole.

[0050] Specifically, the sealing port 11 needs to be set as a circular hole to adapt to the spherical structure of the sealing ball 8, and the diameter of the sealing port 11 should be smaller than the diameter of the sealing ball 8. The surface of the sealing ball 8 is a smooth surface, and the arc surface of the sealing port 11 should also be a smooth surface to ensure that the sealing ball 8 can be fully fitted when it is fitted with the arc surface of the sealing port 11, thereby ensuring the sealing effect of the sealing ball 8.

[0051] On the basis of the above-mentioned embodiments, the outer periphery of the rotating top rod 6 is provided with a scale for displaying the rotation angle.

[0052] Specifically, the rotating top rod 6 can be provided with a scale or an indicator to help the operator accurately set the required opening size. Whether to use a scale or an indicator needs to be determined according to the threads on the outer periphery of the rotating top rod 6. When the rotating top rod 6 can be turned on to open the channel, only a scale needs to be set. When the rotating top rod 6 cannot be turned on to open the channel, an indicator needs to be set.

[0053] On the basis of the above-mentioned embodiments, the pressure relief assembly 5 is provided with a detection assembly and an alarm assembly. The detection assembly is used to detect whether hydrogen is discharged at the pressure relief assembly 5. The alarm assembly is electrically connected with the detection assembly and is used to alarm when the pressure relief assembly 5 discharges hydrogen.

[0054] Specifically, the detection assembly usually selects a fixed hydrogen detector, which is installed near the pressure relief assembly 5 and detects the exhaust hole of the pressure relief assembly 5. When the gas pressure in the container is large, and the exhaust hole discharges hydrogen, the detection assembly can detect the increase of hydrogen concentration. At the same time, the detection assembly sends a signal to the alarm assembly, and the alarm assembly alarms and reminds the operator that the container is discharging excessive hydrogen. At this time, the operator should stay away from the container. Generally, an adsorbent and an adsorbing material should be additionally arranged near each container to timely absorb hydrogen during the automatic discharge of hydrogen to avoid ignition caused by hydrogen meeting sparks.

[0055] Each embodiment in the specification is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same and similar parts between each embodiment can be referred to each other.

[0056] The above is a detailed introduction to a fuel cell hydrogen valve with a safety release function provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A fuel cell hydrogen valve with a safety release function, characterized in that: include: A valve body (1) having a passage therein for hydrogen flow; An air inlet pipe (2) is provided at a first end of the passage; An air outlet pipe (3) is provided at the second end of the channel, and the air outlet pipe (3) is used to communicate with the container; A regulating component, provided in the passage and used to control the communication or blockage between the air inlet pipe (2) and the air outlet pipe (3); A pressure relief component (5) is provided on a side of the channel close to the gas outlet pipe (3), and the pressure relief component (5) is used to release the hydrogen when the pressure in the container is too high.

2. The fuel cell hydrogen valve with a safety release function according to claim 1, characterized in that: The pressure relief assembly (5) comprises a movable block and a first elastic member, wherein the movable block is connected to the valve body (1) via the first elastic member, and an exhaust hole is provided on the movable block, wherein a first end of the exhaust hole is connected to the channel, and a second end of the exhaust hole is arranged perpendicular to the first end, and when the tension of the elastic member is less than the air pressure in the channel, the movable block moves toward the outside of the valve body (1) and causes the exhaust hole to extend out of the valve body (1).

3. The fuel cell hydrogen valve with a safety release function according to claim 1, characterized in that: The regulating assembly comprises a rotating push rod (6), a push core (7), a sealing ball (8) and a second elastic member (9); the rotating push rod (6) is threadedly connected to the valve body (1); the push core (7) is fixedly connected to the rotating push rod (6) and is arranged inside the valve body (1); the second elastic member (9) abuts against the sealing ball (8); and the second elastic member (9) is used to push the sealing ball (8) to achieve sealing between the air inlet pipe (2) and the air outlet pipe (3).

4. The fuel cell hydrogen valve with a safety release function according to claim 3, characterized in that: It also includes a first sealing cover (10), the second elastic member (9) is arranged in a groove on the first sealing cover (10), and the first sealing cover (10) and the valve body (1) are threadedly connected.

5. The fuel cell hydrogen valve with a safety release function according to claim 4, characterized in that: A sealing opening (11) is provided in the valve body (1), and the peripheral surface of the sealing opening (11) facing the sealing ball (8) is an arc-shaped surface, and the sealing ball (8) is a spherical structure.

6. The fuel cell hydrogen valve with a safety release function according to claim 5, characterized in that: The outer periphery of the top core (7) is provided with a guide seat (12), and the outer periphery of the guide seat (12) is provided with a sealing gasket (13).

7. The fuel cell hydrogen valve with a safety release function according to claim 6, characterized in that: It also includes a second sealing cover (4), which is sleeved on the rotating top rod (6) and is detachably connected to the valve body (1), and the second sealing cover (4) is arranged in abutment with the sealing gasket (13).

8. The fuel cell hydrogen valve with a safety release function according to claim 7, characterized in that: The surface of the sealing ball (8) is a smooth surface, and the sealing opening (11) is a circular hole.

9. The fuel cell hydrogen valve with a safety release function according to claim 8, characterized in that: The outer periphery of the rotating top rod (6) is provided with a scale for displaying the rotation angle.

10. The fuel cell hydrogen valve with a safety release function according to any one of claims 1 to 9, characterized in that: The pressure relief component (5) is provided with a detection component and an alarm component. The detection component is used to detect whether the pressure relief component (5) discharges the hydrogen. The alarm component is electrically connected to the detection component and is used to alarm when the pressure relief component (5) discharges the hydrogen.

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