Intelligent high-pressure hydrogen valve

Abstract

This invention discloses an intelligent high-pressure hydrogen valve, relating to the field of valve technology. The invention includes a valve body with a valve core inside. A guide seat is fixedly connected to the top of the valve body, and a valve stem is rotatably connected to the inner wall of the guide seat. The bottom of the valve stem extends into the valve body and is fixedly connected to the valve core. Two sealing rings are provided on the inner wall of the valve body, located on both sides of the valve core and fitting snugly against its outer wall. End caps are fixedly connected to both sides of the valve body to facilitate maintenance of the valve core. Multiple rectangular grooves are formed on the outer wall of the guide seat, and rectangular boxes are formed on the inner walls of these grooves. The invention utilizes the cooperation of a second wedge and a first wedge to move a sliding ring, causing the sealing rings to separate from the valve core, facilitating valve body disassembly. Multiple hydrogen absorption reactors are arranged within the rectangular boxes for cyclical use.

Description

Technical Field

[0001] This invention belongs to the field of valve technology, and in particular relates to an intelligent high-pressure hydrogen valve. Background Technology

[0002] Hydrogen is a flammable and explosive medium. Due to its small molecular diameter, it can easily leak through sealed media. Once the leaked hydrogen reaches a certain concentration upon contact with air, it will ignite and explode upon contact with an open flame or high temperature. In the valves of hydrogen storage cylinders, the sealing performance of the internal sealing packing gradually decreases due to the continuous opening and closing of the valves, eventually developing from a small leak into a large leak.

[0003] A search revealed that invention CN113833902B discloses a valve assembly for a hydrogen storage device in a hydrogen-powered vehicle. The assembly includes a valve body, a packing cover, a valve stem, and packing material. The packing cover is fitted onto the top of the valve body and fixed to it with bolts. The packing material is located inside the valve body and covers the bottom of the packing cover. The valve stem passes through the packing cover and the packing material. The assembly also includes a disassembly section, a connecting block, a hydrogen absorption reactor, and a negative pressure telescopic tube. The rotation of a screw drives an internal piston to rise, creating negative pressure on the inside of the negative pressure telescopic tube and the connecting block. Under this negative pressure, the negative pressure telescopic tube contracts laterally, shortening its length and pulling the hydrogen absorption reactor in the slot to adhere to both sides of the connecting block. The support rod can then be pulled to remove the hydrogen absorption reactor from inside the packing cover for replacement, avoiding the need to replace the entire packing cover and reducing unnecessary hassle.

[0004] The valve also has the following disadvantages when in use: During use, the leaked hydrogen is oxidized by a hydrogen absorption reactor. Because of the hydrogen absorption reactor, the valve stem is only a single layer and is set in a ring on the outer wall of the valve stem. It needs to be replaced after a long period of use, but it needs to be removed and replaced each time, which is inconvenient to use. In addition, the sealing rings on both sides of the valve core will wear with the valve core. If no adjustment is made, greater leakage will occur. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent high-pressure hydrogen valve. The cooperation of the second wedge and the first wedge can drive the sliding ring to move, thereby causing the sealing ring to separate from the valve core, which facilitates the disassembly of the valve body. By setting multiple hydrogen absorption reactors inside the rectangular box, the valve can be used in a cyclical manner, which can increase the service life and facilitate replacement, thus solving the existing technical problems.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] A smart valve for high-pressure hydrogen includes:

[0008] The valve body has a valve core inside, a guide seat is fixedly connected to the top of the valve body, a valve stem is rotatably connected to the inner wall of the guide seat, and the bottom of the valve stem extends into the valve body and is fixedly connected to the valve core.

[0009] The valve body is provided with two sealing rings on its inner wall. The sealing rings are located on both sides of the valve core and fit against the outer wall of the valve core. End caps are fixedly connected to both sides of the valve body to facilitate maintenance of the valve core.

[0010] The outer wall of the guide seat is provided with multiple rectangular grooves, the inner wall of the rectangular grooves is provided with a rectangular box, one side of the rectangular box is provided with an arc edge for use with the valve stem, the interior of the rectangular box is provided with a rotating column, and multiple hydrogen absorption reactors are inserted into the outer wall of the rotating column. The multiple hydrogen absorption reactors are interchangeable, and one of the hydrogen absorption reactors is in contact with the outer wall of the valve stem.

[0011] The transmission mechanism, housed within a rectangular box, is used to drive the hydrogen absorption reactor for replacement, thereby increasing its service life and reducing disassembly and assembly time.

[0012] An adjustment mechanism, located on the end cover, is used to adjust the position of the sealing ring, keeping the sealing ring in contact with the outer wall of the valve core.

[0013] Optionally, the transmission mechanism includes a sliding seat slidably connected to the inner wall of the bottom of the rectangular box, a rotating column rotatably connected to the sliding seat, a first screw rotatably connected through the inner wall of the rectangular box, the sliding seat being threaded onto the first screw to adjust the position of the sliding seat, and a side cover fixedly connected to the outer side of the rectangular box, the side cover being fixedly connected to the outer wall of the guide seat by bolts.

[0014] Optionally, the adjusting mechanism includes a support frame fixedly connected to the outer wall of the end cap, a second screw threaded through the top of the support frame, a fixing ring fixedly connected to the inner wall of the end cap, an annular groove formed at the end of the fixing ring near the valve core, a sliding ring slidably provided on the inner wall of the annular groove, the end of the sliding ring near the sealing ring being fixedly connected to the sealing ring, a first wedge block slidably provided through the outer wall of the end cap, a first groove formed on the outer wall of the sliding ring, the first wedge block penetrating the outer wall of the fixing ring and cooperating with the first groove, so that the first wedge block can drive the fixing ring to move through the inclined surface.

[0015] Optionally, the top of the guide seat is threaded with a T-shaped ring, and the top of the T-shaped ring is threaded with an external threaded sleeve corresponding to the rectangular box. The inner wall of the external threaded sleeve is rotatably connected with a rotating rod, and the bottom of the rotating rod is fixedly connected with an abutment plate that cooperates with the rotating column, which can drive the rotating column to rotate.

[0016] Optionally, the bottom of the T-ring is provided with a limiting groove corresponding to the abutment plate, and the outer threaded sleeve is fixedly fitted with a limiting plate to facilitate control of the position of the abutment plate.

[0017] Optionally, a sealing ring is fixedly connected to the top of the limiting plate to increase its sealing performance.

[0018] Optionally, a sliding rod is slidably connected through the top of the support frame, and a second wedge is slidably provided on the outer wall of the end cap. The second wedge is fixedly connected to the bottom of the sliding rod. A second groove is provided on the outer wall of the sliding ring to cooperate with the second wedge. The second wedge passes through the outer wall of the fixed ring and cooperates with the second groove. The second wedge can drive the sliding ring to move. A spring is sleeved on the outer wall of the sliding rod between the support frame and the second wedge. The two ends of the spring are fixedly connected to the side of the support frame and the second wedge that are close to each other, so that the second wedge can automatically reset.

[0019] Optionally, the outer wall of the rotating column is provided with a slot corresponding to the hydrogen absorption reactor, and a rod is inserted into the inner wall of the slot. The hydrogen absorption reactor is fixedly connected to the other side of the rod, which facilitates the replacement of the hydrogen absorption reactor after use.

[0020] The embodiments of the present invention have the following beneficial effects:

[0021] The cooperation between the second and first wedges can drive the sliding ring to move, causing the sealing ring to separate from the valve core, which facilitates the disassembly of the valve body. By setting multiple hydrogen absorption reactors inside the rectangular box, they can be used in a cyclical manner, which can increase the service life and facilitate replacement.

[0022] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0025] Figure 2 This is an enlarged structural diagram of part A according to an embodiment of the present invention;

[0026] Figure 3 This is an enlarged structural diagram of part B according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of a rectangular box structure according to an embodiment of the present invention.

[0028] In the diagram: 1. Valve body; 2. Valve core; 3. Sealing ring; 4. End cap; 5. Fixing ring; 7. Guide seat; 8. T-ring; 9. Valve stem; 10. Rectangular groove; 11. Side cover; 12. First screw; 13. External threaded sleeve; 14. Rotating rod; 15. Limiting groove; 16. Contact plate; 17. Limiting plate; 18. Annular groove; 19. Sliding ring; 20. Support frame; 21. Second screw; 22. First wedge; 23. First groove; 24. Sliding rod; 25. Second wedge; 26. Spring; 27. Second groove; 28. Rectangular box; 29. ​​Sliding seat; 30. Rotating column; 31. Arc edge; 32. Slot; 33. Insert rod; 34. Hydrogen absorption reactor. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0031] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0032] Example 1

[0033] Please see Figures 1-3 As shown, this embodiment provides an intelligent high-pressure hydrogen valve, including:

[0034] The valve body 1 has a valve core 2 inside. A guide seat 7 is fixedly connected to the top of the valve body 1. A valve stem 9 is rotatably connected to the inner wall of the guide seat 7. The bottom of the valve stem 9 extends into the valve body 1 and is fixedly connected to the valve core 2.

[0035] The valve body 1 has two sealing rings 3 on its inner wall. The sealing rings 3 are located on both sides of the valve core 2 and fit against the outer wall of the valve core 2. End caps 4 are fixedly connected to both sides of the valve body 1.

[0036] The outer wall of the guide seat 7 is provided with multiple rectangular grooves 10, the inner wall of the rectangular grooves 10 is provided with a rectangular box 28, one side of the rectangular box 28 is provided with an arc edge 31 that cooperates with the valve stem 9, the interior of the rectangular box 28 is provided with a rotating column 30, and multiple hydrogen absorption reactors 34 are inserted into the outer wall of the rotating column 30, one of which is in contact with the outer wall of the valve stem 9.

[0037] The transmission mechanism, located inside the rectangular box 28, is used to drive the hydrogen absorption reactor 34 to change, thereby increasing its service life and reducing disassembly and assembly time.

[0038] An adjustment mechanism, located on the end cover 4, is used to adjust the position of the sealing ring 3, keeping the sealing ring 3 in contact with the outer wall of the valve core 2. In the above technical solution, the rectangular box 28 can oxidize the leaked hydrogen, and the transmission mechanism can drive the hydrogen absorption reactor 34 to change position, which can reduce the number of disassembly and assembly. Furthermore, the adjustment mechanism can drive the sealing ring 3 to be in contact with the outer wall of the valve core 2, so that it can still seal even after wear.

[0039] In one aspect of this embodiment, such as Figure 1 and Figure 4 As shown, the transmission mechanism includes a sliding seat 29 slidably connected to the inner wall of the bottom of the rectangular box 28, a rotating column 30 rotatably connected to the sliding seat 29, a first screw 12 rotatably connected through the inner wall of the rectangular box 28, the sliding seat 29 being threaded onto the first screw 12, and a side cover 11 fixedly connected to the outer side of the rectangular box 28. The side cover 11 is fixedly connected to the outer wall of the guide seat 7 by bolts. In the above technical solution, rotating the first screw 12 can drive the sliding seat 29 to move, thereby driving the rotating column 30 to move, thus separating the hydrogen absorption reactor 34 in use from the valve stem 9 for replacement.

[0040] In one aspect of this embodiment, such as Figure 1 and Figure 2 As shown, a T-shaped ring 8 is threadedly connected to the top of the guide seat 7. An outer threaded sleeve 13 corresponding to the rectangular box 28 is threadedly connected to the top of the T-shaped ring 8. A rotating rod 14 is rotatably connected to the inner wall of the outer threaded sleeve 13. A contact plate 16 that cooperates with the rotating column 30 is fixedly connected to the bottom of the rotating rod 14. In the above technical solution, rotating the first screw 12 actuates the rotating column 30 to move to the bottom of the contact plate 16. Rotating the outer threaded sleeve 13 can drive the contact plate 16 to descend, so that the contact plate 16 abuts against the rotating column 30. The bottom of the contact plate 16 is provided with anti-slip texture, which can increase the friction between it and the rotating column 30. Rotating the rotating rod 14 can drive the contact plate 16 to rotate, thereby driving the rotating column 30 to rotate and change the position of the hydrogen absorption reactor 34, which is convenient for replacing the hydrogen absorption reactor 34 after use.

[0041] In one aspect of this embodiment, such as Figure 1 and Figure 3 As shown, the adjustment mechanism includes a support frame 20 fixedly connected to the outer wall of the end cover 4. A second screw 21 is threaded through the top of the support frame 20. A fixing ring 5 is fixedly connected to the inner wall of the end cover 4. An annular groove 18 is opened at one end of the fixing ring 5 near the valve core 2. A sliding ring 19 is slidably provided on the inner wall of the annular groove 18. The end of the sliding ring 19 near the sealing ring 3 is fixedly connected to the sealing ring 3. A first wedge 22 is slidably provided through the outer wall of the end cover 4. A first groove 23 is opened on the outer wall of the sliding ring 19. The first wedge 22 is used in conjunction with the first groove 23 through the outer wall of the fixing ring 5. In the above technical solution, rotating the second screw 21 can drive the first wedge 22 to descend. The first wedge 22 can abut against the first groove 23 and drive the sliding ring 19 to move inward, thereby driving the sealing ring 3 to abut against the outer wall of the valve core 2, so that the sealing ring 3 can fit against the valve core 2 after wear.

[0042] In one aspect of this embodiment, such as Figure 3 As shown, a sliding rod 24 is slidably connected to the top of the support frame 20. A second wedge 25 is slidably provided on the outer wall of the end cap 4. The second wedge 25 is fixedly connected to the bottom of the sliding rod 24. A second groove 27 is provided on the outer wall of the sliding ring 19 to cooperate with the second wedge 25. The second wedge 25 passes through the outer wall of the fixing ring 5 and cooperates with the second groove 27. A spring 26 is sleeved on the outer wall of the sliding rod 24 between the support frame 20 and the second wedge 25. The two ends of the spring 26 are fixedly connected to the side of the support frame 20 and the side of the second wedge 25 that are close to each other. In the above technical solution, rotating the second screw 21 causes the first wedge 22 to disengage from the first groove 23. Pressing the sliding rod 24 downwards can cause the second wedge 25 to move downwards. The second wedge 25 can drive the sliding ring 19 to move outwards through the second groove 27, thereby causing the sealing ring 3 to disengage from the valve body 1, which facilitates the disassembly of the valve body 1.

[0043] Example 2

[0044] Improvements based on Example 1: such as... Figure 2 As shown, the bottom of the T-shaped ring 8 is provided with a limiting groove 15 corresponding to the abutment plate 16, and the outer threaded sleeve 13 is fixedly sleeved with a limiting plate 17. In the above technical solution, the outer threaded sleeve 13 can be limited by the cooperation of the limiting groove 15 and the limiting plate 17, so as to control the height of the abutment plate 16.

[0045] In one aspect of this embodiment, such as Figure 2 As shown, a sealing ring is fixedly connected to the top of the limiting plate 17. In the above technical solution, the sealing ring can seal the space between the outer threaded sleeve 13 and the T-ring 8 to prevent hydrogen leakage.

[0046] Example 3

[0047] Improvements based on Example 1: such as... Figure 4 As shown, the outer wall of the rotating column 30 is provided with a slot 32 corresponding to the hydrogen absorption reactor 34. A rod 33 is inserted into the inner wall of the slot 32. The hydrogen absorption reactor 34 is fixedly connected to the other side of the rod 33. In the above technical solution, the cooperation between the slot 32 and the rod 33 facilitates the replacement of the hydrogen absorption reactor 34 and makes it easy to disassemble.

[0048] The first screw 12, the rotating rod 14, and the second screw 21 are each equipped with a motor, and their opening and closing are controlled by a corresponding control program to achieve intelligent control.

[0049] The usage process and working principle of the technical solution of this invention are as follows:

[0050] During use, hydrogen leaks through the connection between valve core 2 and valve stem 9 and valve body 1. The leaked hydrogen can be oxidized by the catalyst coating on the hydrogen absorption reactor 34. When the coating on the hydrogen absorption reactor 34 in use is depleted, the first screw 12 is rotated. The first screw 12 moves the sliding seat 29, which in turn moves the rotating column 30 until it is below the contact plate 16. The outer screw sleeve 13 is then rotated, causing the contact plate 16 to descend and contact the rotating column 30. Rotating the rotating rod 14 rotates the contact plate 16, which in turn rotates the rotating column 30, thus replacing the hydrogen absorption reactor 34. After replacement, rotating the outer screw sleeve 13 raises the contact plate 16, and then rotating the first screw 12 resets the rotating column 30, allowing the replaced hydrogen absorption reactor 34 to contact the contact plate. Valve stem 9 continues to process hydrogen. After the hydrogen absorption reactor 34 is replaced, the side cover 11 is removed from the guide seat 7, and the rectangular box 28 can be pulled out to replace the new hydrogen absorption reactor 34. After resetting and reinstallation, when wear occurs between the valve core 2 and the sealing ring 3, rotating the second screw 21 can drive the first wedge 22 to descend, so that the first wedge 22 abuts against the first groove 23, which can drive the sliding ring 19 to move inward, thereby driving the sealing ring 3 to abut against the valve core 2, increasing the sealing effect. When the valve core 2 needs maintenance, rotating the second screw 21 resets it, driving the first wedge 22 to completely disengage from the first groove 23, and pressing the sliding rod 24 can drive the second wedge 25 to abut against the second groove 27, thereby driving the sliding ring 19 to move outward, driving the sealing ring 3 to disengage from the valve body 1, and the valve body 1 can be removed from between the two end covers 4 for maintenance.

[0051] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0052] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An intelligent high-pressure hydrogen valve, characterized by, include: The valve body (1) has a valve core (2) inside. A guide seat (7) is fixedly connected to the top of the valve body (1). A valve stem (9) is rotatably connected to the inner wall of the guide seat (7). The bottom of the valve stem (9) extends into the valve body (1) and is fixedly connected to the valve core (2). The valve body (1) has two sealing rings (3) on its inner wall. The sealing rings (3) are located on both sides of the valve core (2) and are in contact with the outer wall of the valve core (2). Both sides of the valve body (1) are fixedly connected with end caps (4). The outer wall of the guide seat (7) is provided with a plurality of rectangular grooves (10), the inner wall of the rectangular grooves (10) is provided with a rectangular box (28), one side of the rectangular box (28) is provided with an arc edge (31) for use with the valve stem (9), the interior of the rectangular box (28) is provided with a rotating column (30), the outer wall of the rotating column (30) is inserted with a plurality of hydrogen absorption reactors (34), one of which is in contact with the outer wall of the valve stem (9); The transmission mechanism is set inside the rectangular box (28) and is used to drive the hydrogen absorption reactor (34) to change, so as to increase its service time and reduce the disassembly and assembly time. An adjustment mechanism is provided on the end cover (4) to adjust the position of the sealing ring (3) and keep the sealing ring (3) in contact with the outer wall of the valve core (2); The transmission mechanism includes a sliding seat (29) slidably connected to the inner wall of the bottom of the rectangular box (28), a rotating column (30) rotatably connected to the sliding seat (29), a first screw (12) rotatably connected through the inner wall of the rectangular box (28), the sliding seat (29) being threaded onto the first screw (12), and a side cover (11) fixedly connected to the outer side of the rectangular box (28), the side cover (11) being fixedly connected to the outer wall of the guide seat (7) by bolts; The top of the guide seat (7) is threaded with a T-shaped ring (8), and the top of the T-shaped ring (8) is threaded with an outer threaded sleeve (13) corresponding to the rectangular box (28). The inner wall of the outer threaded sleeve (13) is rotatably connected with a rotating rod (14), and the bottom of the rotating rod (14) is fixedly connected with an abutment plate (16) that cooperates with the rotating column (30). The outer wall of the rotating column (30) is provided with a slot (32) corresponding to the hydrogen absorption reactor (34), and a rod (33) is inserted into the inner wall of the slot (32). The hydrogen absorption reactor (34) is fixedly connected to the other side of the rod (33).

2. The intelligent high pressure hydrogen valve of claim 1, wherein The adjustment mechanism includes a support frame (20) fixedly connected to the outer wall of the end cap (4). A second screw (21) is threaded through the top of the support frame (20). A fixing ring (5) is fixedly connected to the inner wall of the end cap (4). An annular groove (18) is provided at one end of the fixing ring (5) near the valve core (2). A sliding ring (19) is slidably provided on the inner wall of the annular groove (18). The end of the sliding ring (19) near the sealing ring (3) is fixedly connected to the sealing ring (3). A first wedge (22) is slidably provided through the outer wall of the end cap (4). A first groove (23) is provided on the outer wall of the sliding ring (19). The first wedge (22) is used in conjunction with the first groove (23) through the outer wall of the fixing ring (5).

3. The intelligent high pressure hydrogen valve of claim 1, wherein The bottom of the T-ring (8) is provided with a limiting groove (15) corresponding to the contact plate (16), and the outer threaded sleeve (13) is fixedly fitted with a limiting plate (17).

4. The intelligent high pressure hydrogen valve of claim 3, wherein A sealing ring is fixedly connected to the top of the limiting plate (17).

5. The intelligent high pressure hydrogen valve of claim 2, wherein A sliding rod (24) is slidably connected through the top of the support frame (20). A second wedge (25) is slidably provided on the outer wall of the end cap (4). The second wedge (25) is fixedly connected to the bottom of the sliding rod (24). A second groove (27) is provided on the outer wall of the sliding ring (19) to cooperate with the second wedge (25). The second wedge (25) passes through the outer wall of the fixing ring (5) and cooperates with the second groove (27). A spring (26) is sleeved on the outer wall of the sliding rod (24) between the support frame (20) and the second wedge (25). The two ends of the spring (26) are fixedly connected to the side of the support frame (20) and the second wedge (25) that are close to each other.

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