A pressure reducing valve fixing device and a gas cylinder chamber with the same

Abstract

This utility model provides a pressure reducing valve fixing device and a gas cylinder chamber having the same. The pressure reducing valve fixing device includes a base and a top cover. A first mounting part is provided on the upper end surface of the base; a second mounting part is provided on the lower end surface of the top cover. The mounting groove formed by assembling the first mounting part and the second mounting part matches the circumferential direction of the pressure reducing valve, and the inner diameter of the mounting groove is larger than the maximum circumferential outer diameter of the pressure reducing valve. The mounting groove provides axial restraint for the pressure reducing valve installed therein. The pressure reducing valve fixing device provided by this utility model adopts a split base and top cover design, which is simple in structure, easy to manufacture, and has high shape accuracy, facilitating the assembly and replacement of the pressure reducing valve. The design of the mounting groove can provide axial restraint for the pressure reducing valve, effectively constraining the axial displacement of the pressure reducing valve, while retaining radial clearance, allowing the pressure reducing valve to have a small adjustment range in the radial direction, ensuring precise docking with the cylinder valve with axial offset.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen energy storage technology, specifically to a pressure reducing valve fixing device and a gas cylinder chamber having the same. Background Technology

[0002] Currently, hydrogen storage cylinders are widely used as hydrogen storage and supply devices in hydrogen power generation systems. Typically, hydrogen storage cylinders are connected to the gas circuit of an integrated valve assembly inside the cylinder chamber via a detachable connection, and supply hydrogen to the fuel cells in the hydrogen power generation system.

[0003] To facilitate the replacement of hydrogen storage cylinders, the cylinder valve and pressure reducing valve can be quickly and easily connected and sealed within the cylinder chamber. Current technology typically involves installing a step at the bottom of the hydrogen storage chamber to directly mount the integrated valve assembly. Furthermore, to ensure stable installation of the integrated valve assembly within the chamber, at least two bolts are usually required to secure the valve body to the mounting step. Therefore, this technical solution has the following drawbacks:

[0004] 1. The fixing method of this pressure reducing valve relies on precision machining and manual adjustment, which increases assembly time and the difficulty of maintenance and replacement;

[0005] 2. This method of fixing the pressure reducing valve will result in the addition of a step structure to the chamber body, increasing the manufacturing difficulty of the chamber body;

[0006] 3. After installation, the pressure reducing valve is relatively fixed in position. When the cylinder valve of the hydrogen storage tank is offset due to manufacturing errors, external impacts, etc., the pressure reducing valve will not be able to fully adapt to the cylinder valve due to the lack of dynamic compensation capability, which may lead to gas circuit connection failure or sealing leakage risk.

[0007] 4. The pressure reducing valve installation method lacks a flexible buffer mechanism, and frequent insertion and removal of the hydrogen storage cylinder can easily accelerate structural fatigue or component wear. Utility Model Content

[0008] The purpose of this utility model is to overcome the defects of the prior art and provide a pressure reducing valve fixing device and a gas cylinder chamber having it. This can solve the problems of difficult assembly, difficult maintenance and replacement, increased difficulty in manufacturing the chamber, and lack of dynamic compensation capability in the existing pressure reducing valve fixing installation method, which cannot adapt to cylinder valves with axial offset.

[0009] To achieve the above and other objectives, this utility model is implemented through the following technical solution: As a first aspect, this utility model proposes a pressure reducing valve fixing device, including a base and a top cover; a first mounting part is provided on the upper end surface of the base; a second mounting part is provided on the lower end surface of the top cover; the mounting groove formed after the first mounting part and the second mounting part are assembled is circumferentially matched with the pressure reducing valve, and the inner diameter of the mounting groove is larger than the maximum circumferential outer diameter of the pressure reducing valve, so as to provide space for the radial adjustment of the pressure reducing valve; the mounting groove is used to install the pressure reducing valve and to form an axial limit for the pressure reducing valve.

[0010] In one embodiment, a first arc-shaped baffle and a second arc-shaped baffle are provided at both axial ends of the first mounting portion and the second mounting portion, and the first arc-shaped baffle and the second arc-shaped baffle provide axial limiting for the pressure reducing valve.

[0011] In one embodiment, both the first mounting portion and the second mounting portion have connecting portions extending radially outward in the horizontal direction, and the first mounting portion and the second mounting portion are detachably connected through the connecting portions.

[0012] In one embodiment, the base includes a base plate and a plurality of support portions; the lower end of the support portion is connected to the base plate, and the upper end is connected to the lower end face of the first mounting portion.

[0013] In one embodiment, the two outermost support portions are inclined and converged from the base plate toward the first mounting portion.

[0014] As a second aspect, this utility model proposes a gas cylinder chamber, horizontally arranged within a hydrogen storage chamber along the central axis of a pressure reducing valve, including an integrated support; a pressure reducing valve fixing device as described in the first aspect, fixedly installed on the integrated support for installing the pressure reducing valve; a quick hydrogen exchange device, arranged on the integrated support, including a push rod and a fork, the push rod being arranged parallel to the central axis of the pressure reducing valve; the upper part of the fork being fixed to the end of the push rod near the pressure reducing valve, and the lower part being engaged with the outside of an opening and closing sliding sleeve; the opening and closing sliding sleeve being disposed on a quick-connect female connector that is sealed to the pressure reducing valve; pressing the push rod towards the closed end forces the opening and closing sliding sleeve to move away from the hydrogen storage cylinder, thereby disengaging the quick-connect female connector from the quick-connect male connector that is sealed to the hydrogen storage cylinder.

[0015] In one embodiment, the integrated support includes a fixed block support, a first perforated plate, an arc-shaped plate, and a second perforated plate that are sequentially fixedly connected from the closed end to the open end. The fixed block support is disposed at the bottom of the first perforated plate. The first perforated plate, the arc-shaped plate, and the second perforated plate together form a hydrogen storage cylinder support, which respectively support the mouth, body, and bottom of the hydrogen storage cylinder.

[0016] In one embodiment, the two ends of the push rod are slidably disposed on the first perforated plate and the second perforated plate, respectively; a button is provided on the end of the push rod away from the pressure reducing valve, and pressing the button drives the push rod to slide toward the closed end of the gas cylinder chamber.

[0017] In one embodiment, a limit ring is provided on the push rod, and a reset spring is provided between the limit ring and the first perforated plate.

[0018] In one embodiment, a guide shaft is provided on the end face of the shift fork facing the first perforated plate; the guide shaft is arranged parallel to the push rod and is slidably mounted on the first perforated plate.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The pressure reducing valve fixing device provided by this utility model adopts a split base and top cover design, which has a simple structure, is easy to manufacture and has high shape accuracy, which facilitates the assembly and replacement of the pressure reducing valve.

[0021] 2. The shape design of the mounting groove of this utility model can accurately limit the axial movement of the pressure reducing valve, effectively constrain the axial displacement of the pressure reducing valve, and at the same time retain the radial clearance, so that the pressure reducing valve has a fine adjustment range in the radial direction, thereby ensuring accurate docking with the bottle valve with axial offset.

[0022] 3. The design of the first and second arc-shaped baffles of this utility model can provide axial restraint for the pressure reducing valve, effectively constraining the axial displacement of the pressure reducing valve;

[0023] 4. The design of the connecting part of this utility model can facilitate the assembly and connection of the base and the top cover;

[0024] 5. The design of the support part of this utility model can save the overall material of the pressure reducing valve fixing device, and the support part can improve the support strength of the base plate to the first mounting part, ensuring the installation stability of the pressure reducing valve.

[0025] 6. The gas cylinder chamber provided by this utility model adopts a horizontal placement design, which not only ensures a stable connection between the hydrogen storage cylinder and the pressure reducing valve, but also avoids the hydrogen storage alloy from clogging the cylinder valve, and improves the hydrogen release efficiency; the modular design of the gas cylinder chamber can reduce the assembly complexity, and each component can be pre-assembled independently and quickly integrated.

[0026] 7. The hydrogen storage cylinder and pressure reducing valve of this utility model adopt a quick hydrogen exchange device to achieve a detachable sealed connection, realizing convenient replacement of the hydrogen storage cylinder.

[0027] 8. The integrated bracket structure of this utility model is simple, uses less material, and can reduce production costs. Attached Figure Description

[0028] Figure 1 The diagram shown is a three-dimensional structural schematic of Embodiment 1 of this utility model.

[0029] Figure 2 The diagram shown is a schematic of the installation of the pressure reducing valve in Embodiment 1 of this utility model.

[0030] Figure 3 The diagram shown is a structural schematic of a pressure reducing valve.

[0031] Figure 4 Displayed as Figure 3 A cross-sectional view of the C-plane.

[0032] Figure 5 The diagram shown is a structural schematic of Embodiment 2 of this utility model.

[0033] Figure 6 The diagram shown is a structural schematic of the integrated support and rapid hydrogen exchange device in Embodiment 2 of this utility model.

[0034] In the diagram: 10. Base; 11. Base plate; 12. Support part; 13. First mounting part; 14. First fixing hole; 131. First arc-shaped baffle; 132. Second arc-shaped baffle; 133. Connecting part; 134. Second fixing hole; 20. Top cover; 21. Second mounting part; 30. Integrated bracket; 31. Fixing block bracket; 32. First perforated plate; 33. Arc-shaped plate; 34. Second perforated plate; 40. Quick hydrogen exchange device; 41. Push rod; 42. Fork; 43. Button; 44. Guide shaft; 45. Limiting ring; 46. Return spring; A. Pressure reducing valve; A1. Quick-connect female connector; A2. Opening and closing sliding sleeve; B. Hydrogen storage cylinder. Detailed Implementation

[0035] Please see Figures 1-6 The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0036] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0037] In this invention, the serial numbers assigned to components, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The term "connection" in this invention, unless otherwise specified, includes both direct and indirect connections. The terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, encompassing not only the listed elements but also other elements not expressly listed.

[0038] In this utility model, the terms "upper," "lower," "left," "right," "front," and "rear," which indicate orientation or positional relationships, are all based on the appendix. Figure 1 This description is provided only for the purpose of clearly describing the invention and is not intended to indicate or imply that the structures or components referred to must have a specific orientation or be constructed in a specific orientation, and therefore should not be construed as a limitation of the invention.

[0039] (Example 1)

[0040] like Figure 1-2 As shown, this embodiment provides a pressure reducing valve fixing device, including a base 10 and a top cover 20; a first mounting part 13 is provided on the upper end surface of the base 10; a second mounting part 21 is provided on the lower end surface of the top cover 20; the mounting groove formed by the first mounting part 13 and the second mounting part 21 after assembly is circumferentially matched with the pressure reducing valve A, and the inner diameter of the mounting groove is slightly larger than the maximum outer diameter of the pressure reducing valve A in the circumferential direction, so as to provide space for the radial adjustment of the pressure reducing valve A; the mounting groove is used to install the pressure reducing valve A and to form an axial limit for the pressure reducing valve A.

[0041] Specifically, the base 10 includes a base plate 11, a support portion 12, and a first mounting portion 13. Please refer to... Figure 5 The base plate 11 has first fixing holes 14 at both ends for mounting the base 10 onto the integrated bracket 30 of the gas cylinder chamber with bolts. The lower ends of multiple support parts 12 are connected to the base plate 11, and the upper ends are connected to the lower end face of the first mounting part 13. For example, in this embodiment, four support parts 12 are provided, with the two middle ones symmetrically and vertically arranged on both sides of the central axis of the first mounting part 13; the two outermost support parts 12 are inclined and converged from the base plate 11 towards the first mounting part 13. The design of the support parts 12 can save the overall material of the pressure reducing valve fixing device, and the support parts 12 can improve the support strength of the base plate 11 for the first mounting part 13, ensuring the installation stability of the pressure reducing valve. The first mounting part 13 has a first arc-shaped baffle 131 and a second arc-shaped baffle 132 at both axial ends, which axially limit the pressure reducing valve A.

[0042] The second mounting part 21 is designed as a mirror image of the first mounting part 13, and its axial ends are also provided with a first arc-shaped baffle 131 and a second arc-shaped baffle 132. Please refer to... Figure 2 and Figure 3 The first arc-shaped baffle 131 of the first mounting part 13 and the second mounting part 21 together form a limit on the output end side of the pressure reducing valve A body; the second arc-shaped baffle 132 of the first mounting part 13 and the second mounting part 21 together form a limit on the input end side of the pressure reducing valve A body, and isolate the opening and closing sliding sleeve A2 connected to the input end side outside the mounting groove.

[0043] Furthermore, in order to facilitate the detachable connection of the first mounting part 13 and the second mounting part 21, a connecting part 133 can be formed by extending radially outward in the horizontal direction of the first mounting part 13 and the second mounting part 21, and a second fixing hole 134 is opened on the connecting part, and the connecting part 133 of the first mounting part 13 and the second mounting part 21 is connected by bolts.

[0044] Specifically, the base 10 and the top cover 20 can be generated by 3D printing or manufactured by molds. 3D printing is used for prototyping in the early design stage, as it is easy and inexpensive to manufacture the parts. In later mass production, molds can be made from the finalized base 10 and top cover 20; the higher the production volume of the pressure reducing valve fixing device, the lower the cost.

[0045] The pressure reducing valve fixing device provided in this embodiment has a simple structure, is easy to manufacture, and has high shape accuracy. The separate design of the base 10 and the top cover 20 facilitates the assembly and replacement of the pressure reducing valve. Specifically, the base 10 is directly and rigidly connected to the integrated bracket 50. It does not need to be removed when replacing or maintaining the pressure reducing valve A. When replacing or maintaining the pressure reducing valve A, only the top cover 20 needs to be removed to easily take out the pressure reducing valve A. After replacing the new pressure reducing valve A, the base 10 and the top cover 20 only need to be tightened with bolts to axially limit the new pressure reducing valve A in the mounting groove. The entire installation and replacement process is convenient. Compared with the traditional whole-body disassembly and assembly method, it saves the complicated operation of precision machining and manual adjustment, reduces the assembly complexity of the fixing device, and improves the installation efficiency and maintenance convenience of the pressure reducing valve. Meanwhile, the shape design of the mounting groove can precisely limit the axial movement of pressure reducing valve A, effectively constraining its axial displacement, while retaining radial clearance to allow for fine-tuning of valve A's radial movement. Through the guiding effect of the inclined surface of valve A, automatic coaxial alignment between valve A and the valve of hydrogen storage cylinder B is achieved, ensuring precise docking with valves that are off-axis. This design retains the advantages of the rigid connection of traditional fixed devices while achieving non-destructive position compensation through the radial clearance design. This improves system fault tolerance and effectively extends equipment maintenance cycles.

[0046] (Example 2)

[0047] like Figure 5 As shown, this embodiment proposes a gas cylinder chamber, horizontally arranged within the hydrogen storage compartment along the central axis of the pressure reducing valve A. The end furthest from the bottom of the hydrogen storage cylinder B is a closed end, and the end closest to the bottom of the hydrogen storage cylinder B is an open end. For convenient replacement of the hydrogen storage cylinder B, the hydrogen storage cylinder B is detachably sealed to the pressure reducing valve A within the gas cylinder chamber. Specifically, the opening of the hydrogen storage cylinder B is equipped with a cylinder valve (quick-connect male connector); please refer to... Figure 3 and Figure 4 The pressure reducing valve A is sealed with a quick-connect female connector A1. The quick-connect female connector A1 is equipped with an opening and closing sliding sleeve A2 that mates with the quick-connect male connector. A rapid hydrogen exchange device 40 is installed in the gas cylinder chamber to drive the movement of the opening and closing sliding sleeve A2, thereby connecting and disconnecting the hydrogen storage cylinder B and the pressure reducing valve A.

[0048] Specifically, the gas cylinder chamber includes an integrated bracket 30; a pressure reducing valve fixing device as described in Embodiment 1, which is fixedly installed on the integrated bracket 30 for installing the pressure reducing valve A; and a rapid hydrogen exchange device 40, which is disposed on the integrated bracket 30.

[0049] like Figure 6 As shown, the integrated support 30 includes a fixed block support 31, a first perforated plate 32, an arc-shaped plate 33, and a second perforated plate 35, which are sequentially fixedly connected from the closed end to the open end. The fixed block support 31 is located at the bottom of the first perforated plate 32. The first perforated plate 32, the arc-shaped plate 33, and the second perforated plate 35 together form a hydrogen storage cylinder support, which respectively supports the mouth, body, and bottom of the hydrogen storage cylinder B. The pressure reducing valve A is installed on the integrated support 30 through the fixed block 10. The rapid hydrogen exchange device 40 is installed on the integrated support 30, specifically on the hydrogen storage cylinder support, and is located away from the arc-shaped plate 33.

[0050] The rapid hydrogen exchange device 40 includes a push rod 41, a fork 42, and a button 43. The two ends of the push rod 41 are respectively mounted on a first perforated plate 32 and a second perforated plate 35, extending from the closed end of the gas cylinder chamber to the open end, parallel to the central axis of the pressure reducing valve A, and can slide horizontally relative to the hydrogen storage cylinder support. The upper part of the fork 42 is fixedly mounted on the end of the push rod 41 near the pressure reducing valve A and can move with the push rod 41. The lower part of the fork 42 is engaged with the opening and closing sliding sleeve A2. The fork 42 is mounted on a guide shaft 44, which is located on the first perforated plate 32, ensuring that the fork 42 moves in a fixed direction and preventing rotational deviation. The button 43 is located on the end of the push rod 41 away from the pressure reducing valve A and protrudes from the open end of the gas cylinder chamber. Pressing the button 43 drives the push rod 41 to slide towards the closed end of the gas cylinder chamber. A limit ring 45 is also provided on the push rod 41 to limit the displacement range of the push rod 41. A reset spring 46 can also be provided between the limit ring 45 and the first perforated plate 32 to facilitate the reset of the push rod 41 after use.

[0051] When it is necessary to replace hydrogen storage cylinder B, press button 43 to cause push rod 41 to drive shift fork 42 to push opening and closing sleeve A2 to the end away from the cylinder valve, so that quick-connect female connector A1 automatically pops out the cylinder valve, disconnecting hydrogen storage cylinder B from pressure reducing valve A, and automatically pops out the bottom of hydrogen storage cylinder B for easy removal; then, insert hydrogen storage cylinder B filled with hydrogen into the gas cylinder chamber, and gently push the bottom of the cylinder into the gas cylinder chamber to install the cylinder valve of hydrogen storage cylinder B onto quick-connect female connector A1 of pressure reducing valve A, completing the cylinder replacement operation.

[0052] Therefore, this utility model effectively overcomes the various shortcomings of the prior art and has high industrial application value. The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. Any person skilled in the art can modify or change the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A pressure reducing valve fixing device characterized by comprising: Includes the base and top cover; A first mounting portion is provided on the upper surface of the base; A second mounting portion is provided on the lower end surface of the upper cover; The mounting groove formed after the first mounting part and the second mounting part are assembled is circumferentially matched with the pressure reducing valve, and the inner diameter of the mounting groove is larger than the maximum outer diameter of the pressure reducing valve. The mounting groove is used to install the pressure reducing valve and to provide axial positioning for the pressure reducing valve.

2. The pressure reducing valve fixing device according to claim 1, characterized by Both ends of the first mounting part and the second mounting part are provided with a first arc-shaped baffle and a second arc-shaped baffle, which axially limit the pressure reducing valve.

3. The pressure reducing valve securing device of claim 2, wherein Both the first mounting part and the second mounting part have connecting parts extending radially outward in the horizontal direction, and the first mounting part and the second mounting part are detachably connected through the connecting parts.

4. The pressure reducing valve securing device of claim 1, wherein The base includes a base plate and multiple support parts; The lower end of the support is connected to the base plate, and the upper end is connected to the lower end face of the first mounting part.

5. The pressure reducing valve securing device of claim 2, wherein The two outermost support parts are inclined and converged from the base plate toward the first mounting part.

6. A gas cylinder chamber characterized by, It is horizontally installed inside the hydrogen storage tank along the central axis of the pressure reducing valve, including Integrated bracket; The pressure reducing valve fixing device as described in any one of claims 1 to 5 is fixedly installed on the integrated bracket for installing the pressure reducing valve; A rapid hydrogen exchange device is mounted on the integrated bracket and includes a push rod and a fork. The push rod is arranged parallel to the central axis of the pressure reducing valve. The upper part of the fork is fixed to the end of the push rod near the pressure reducing valve, and the lower part is engaged with the outside of the opening and closing sliding sleeve. The opening and closing sliding sleeve is mounted on the quick-connect female connector that is sealed to the pressure reducing valve. Pressing the push rod towards the closed end forces the opening and closing sliding sleeve to move away from the hydrogen storage bottle, thereby disengaging the quick-connect female connector from the quick-connect male connector that is sealed on the hydrogen storage bottle.

7. The gas cylinder chamber according to claim 6, characterized in that The integrated support includes a fixed block support, a first perforated plate, an arc-shaped plate, and a second perforated plate, which are sequentially fixedly connected from the closed end to the open end. The fixed block support is located at the bottom of the first perforated plate. The first perforated plate, the arc-shaped plate, and the second perforated plate together form a hydrogen storage cylinder support, which respectively support the mouth, body, and bottom of the hydrogen storage cylinder.

8. The gas cylinder chamber according to claim 7, characterized in that The two ends of the push rod are slidably mounted on the first perforated plate and the second perforated plate, respectively; a button is provided on the end of the push rod away from the pressure reducing valve, and pressing the button drives the push rod to slide towards the closed end of the gas cylinder chamber.

9. The gas cylinder chamber according to claim 7, wherein A limit ring is provided on the push rod, and a return spring is provided between the limit ring and the first perforated plate.

10. The gas cylinder chamber according to claim 7, characterized by A guide shaft is provided on the end face of the shift fork facing the first perforated plate; the guide shaft is arranged parallel to the push rod and is slidably mounted on the first perforated plate.

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