A pressure reducing valve fixing device and gas cylinder chamber

Abstract

This utility model provides a pressure reducing valve fixing device and a gas cylinder chamber. The pressure reducing valve fixing device includes a guide column bracket; a guide column, at least one end of which is fixed to the guide column bracket; a first return spring, sleeved on the guide column; and a fixing block, slidably mounted on the guide column, such that one end of the first return spring is connected to the guide column bracket and the other end is connected to the fixing block. This utility model has a simple structure and is easy to assemble, facilitating the installation, adjustment, and locking of the pressure reducing valve, improving the convenience of pressure reducing valve installation and maintenance, and reducing the structural complexity and manufacturing difficulty of integrated brackets. Furthermore, the guide column bracket, guide column, and first return spring provide elastic guidance for the radial displacement of the fixing block, improving the ability of the pressure reducing valve fixing device to dynamically adapt to cylinder valves with axial offset, ensuring precise alignment between the quick-connect female of the pressure reducing valve and the quick-connect male of the cylinder valve, thereby improving the stability of the gas circuit connection.

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. 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 of the hydrogen storage cylinder can be sealed and connected in the cylinder chamber via a quick disassembly and assembly method. Existing technology typically involves installing an installation step at the bottom of the hydrogen storage chamber to directly install the integrated valve assembly. Furthermore, to ensure the stable installation of the integrated valve assembly within the first chamber, at least two bolts are usually required to secure the valve body to the installation 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, which can at least solve the problems of difficult assembly, difficult maintenance and replacement, and lack of dynamic compensation capability in the existing pressure reducing valve fixing installation method.

[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 guide column bracket; a guide column, at least one end of which is fixed on the guide column bracket; a first return spring, sleeved on the guide column; and a fixing block, slidably mounted on the guide column, such that one end of the first return spring is connected to the guide column bracket and the other end is connected to the fixing block.

[0010] In one embodiment, the fixing block includes a base and a body, the body being disposed on the base, and the fixing block being slidably mounted on the guide post through through holes at both ends of the base.

[0011] In one embodiment, the main body has a mounting hole for installing and locking the pressure reducing valve; the end of the mounting hole away from the base has an opening, which divides the main body into a first locking part and a second locking part; the first locking part and the second locking part are respectively provided with fixing holes, and the inner wall surface of the fixing holes is provided with internal threads; the fixing holes adjust the size of the opening by cooperating with bolts to adjust the inner diameter of the mounting hole.

[0012] In one embodiment, one end of the guide post is fixed to the guide post bracket, and the other end is fixed to the integrated bracket.

[0013] In one embodiment, both ends of the guide post are fixed to the guide post bracket.

[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 second 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. This utility model has a simple structure and is easy to assemble, which facilitates the installation, adjustment and locking of the pressure reducing valve, improves the convenience of installation and maintenance of the pressure reducing valve, and reduces the structural complexity and manufacturing difficulty of the integrated bracket. At the same time, the design of the guide column bracket, guide column and first return spring can provide elastic guidance for the radial displacement of the fixed block, ensuring the linearity and repeatability of the adjustment process, improving the ability of the pressure reducing valve fixing device to dynamically adapt to the cylinder valve with axial offset, and making the quick-connect female of the pressure reducing valve and the quick-connect male of the cylinder valve accurately aligned, thereby improving the stability of the gas circuit connection. This mechanical adaptive adjustment structure retains the rigid connection advantages of the traditional fixing device, and realizes the non-destructive position compensation function through elastic buffer and guide limit design.

[0021] 2. The design of the first reset spring in this utility model improves the fault tolerance of the system and can effectively reduce the wear of the pressure reducing valve and extend the maintenance cycle of the pressure reducing valve.

[0022] 3. 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.

[0023] 4. 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.

[0024] 5. The integrated bracket structure of this utility model is simple, uses less material, and can reduce production costs. Attached Figure Description

[0025] Figure 1 The diagram shown is a three-dimensional structural schematic of Embodiment 1 of this utility model.

[0026] Figure 2 The diagram shown is a three-dimensional structural schematic of the fixing block at the first angle in Embodiment 1 of this utility model.

[0027] Figure 3 The diagram shown is a three-dimensional structural schematic of the fixing block at the second angle in Embodiment 1 of this utility model.

[0028] Figure 4 The diagram shown is a structural schematic of Embodiment 2 of this utility model.

[0029] Figure 5 The diagram shown is a structural schematic of the integrated support and rapid hydrogen exchange device in Embodiment 2 of this utility model.

[0030] Figure 6 The diagram shown is a structural schematic of a pressure reducing valve.

[0031] Figure 7 Displayed as Figure 6 A cross-sectional view of the C-plane.

[0032] In the diagram: 10. Fixing block; 11. Base; 111. Through hole; 12. Body; 121. Mounting hole; 122. Opening; 123. First locking part; 124. Second locking part; 125. Fixing hole; 20. Guide column bracket; 30. Guide column; 50. Integrated bracket; 51. Fixing block bracket; 52. First perforated plate; 53. Arc plate; 54. Second perforated plate; 60. Quick hydrogen exchange device; 61. Push rod; 62. Fork; 63. Button; 64. Guide shaft; 65. Limiting ring; 66. Second return spring; A. Pressure reducing valve; A1. Quick-connect female connector; A2. Opening and closing sliding sleeve; B. Hydrogen storage cylinder. Detailed Implementation

[0033] Please see Figures 1-7 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.

[0034] 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.

[0035] 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.

[0036] 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 1This 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. Therefore, it should not be construed as a limitation of the invention.

[0037] (Example 1)

[0038] like Figure 1 As shown, this embodiment provides a pressure reducing valve fixing device, including a fixing block 10, a guide post bracket 20, a guide post 30, and a first return spring (not shown in the figure). The lower end of the guide post bracket 20 is fixed to an integrated bracket 50 (e.g., ...). Figure 4 As shown in the figure; the upper end of the guide post 30 is fixed to the upper end of the guide post bracket 20, and the lower end is fixed to the integrated bracket 50; the first reset spring is sleeved on the guide post 30; the fixing block 10 is slidably installed on the guide post 30 through the through hole 111 of the base 11, so that the upper end of the first reset spring is connected to the upper end of the guide post bracket 20, and the lower end is connected to the fixing block 10.

[0039] Please refer to Figure 2 and Figure 3 The fixing block 10 includes a base 11 and a body 12. The body 12 is disposed in the middle of the base 11, and the body 12 and the base 11 can be integrally formed. A through hole 111 is respectively formed at both ends of the base 11. Please refer to [reference needed]. Figure 4 The through hole 111, in conjunction with a bolt, is used to fix the fixing block 10 onto the integrated bracket 50 of the gas cylinder chamber. The body 12 has a mounting hole 121 for installing and locking the pressure reducing valve A; the mounting hole 121 is circumferentially adapted to the pressure reducing valve A, and an opening 122 is provided at the end away from the base 11. The opening 122 divides the end of the body 12 away from the base 11 into a first locking part 123 and a second locking part 124; the first locking part 123 and the second locking part 124 are respectively provided with fixing holes 125, and the inner wall surface of the fixing holes 125 is provided with internal threads; the fixing holes 125, in conjunction with bolts, can adjust the size of the opening 122, thereby adjusting the inner diameter of the mounting hole 121.

[0040] Specifically, in this embodiment, the fixing hole 125 of the first locking part 123 is a through hole, and the fixing hole of the second locking part 124 is a blind hole. The two fixing holes 125 are aligned, and the central axis of the two fixing holes 125 is perpendicular to the direction of the opening 122. In other embodiments, the fixing hole of the second locking part 124 may also be a through hole.

[0041] The pressure reducing valve fixing device provided in this embodiment has a simple structure and is easy to install. The fixing block 10 is directly and rigidly connected to the integrated bracket 50 through the base 11. 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, it is only necessary to adjust the connection between the adjusting bolt and the fixing hole 125 to loosen the connection between the first locking part 123 and the second locking part 124, thereby increasing the inner diameter of the mounting hole 121 to facilitate the removal of the pressure reducing valve A. After replacing the pressure reducing valve A, it is only necessary to adjust the bolt and the fixing hole 125 to lock the first locking part 123 and the second locking part 124 to decrease the inner diameter of the mounting hole 121, thereby circumferentially positioning the new pressure reducing valve A within the mounting hole 121. The entire installation and replacement process is convenient. Compared with the traditional whole-unit disassembly and assembly method, it eliminates the complex 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. In addition, the integrated bracket 50, which is rigidly connected to the pressure reducing valve fixing device, does not need to be machined with an installation step, reducing the manufacturing difficulty.

[0042] Furthermore, the design of this embodiment can solve the problem of hydrogen storage cylinder B (such as...) in actual working conditions. Figure 4 To address the issue of axial misalignment of the pressure reducing valve A due to manufacturing process fluctuations, manufacturing errors, or external impacts, this embodiment utilizes an elastic guiding mechanism formed by a guide post bracket 20, a guide post 30, and a first return spring. This mechanism enables dynamic adaptation of the radially adjustable pressure reducing valve A's axial position. Its working principle is as follows: when a coaxiality deviation exists in the pressure reducing valve, the inclined surface of the pressure reducing valve A guides the valve to automatically align it coaxially with the hydrogen storage cylinder valve, causing a slight displacement of the fixed block 10 along the guide post 30. This mechanical adaptive adjustment mechanism retains the advantages of rigid connection in traditional fixing devices while achieving non-destructive position compensation through elastic buffering and guide limit design. This improves system fault tolerance and effectively extends equipment maintenance cycles.

[0043] Furthermore, it should be noted that although the upper and lower ends of the guide column bracket 20 shown in the figure are bent in different directions, in other embodiments, the guide column bracket 20 can also be designed so that the upper and lower ends are bent in the direction of the fixing block 10. In this case, both ends of the guide column 30 can be directly fixed on the guide column bracket 20, and the pressure reducing valve fixing device can be pre-installed before the whole assembly is fixed to the integrated bracket 50 through the lower end of the guide column bracket 20.

[0044] (Example 2)

[0045] like Figure 4As 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 6 and Figure 7 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 60 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.

[0046] Specifically, the gas cylinder chamber includes an integrated bracket 50; a pressure reducing valve fixing device as described in Embodiment 1 or Embodiment 2, which is fixedly installed on the integrated bracket 50 for installing the pressure reducing valve A; and a rapid hydrogen exchange device 60, which is disposed on the integrated bracket 50.

[0047] like Figure 5 As shown, the integrated support 50 includes a fixed block support 51, a first perforated plate 52, an arc-shaped plate 53, and a second perforated plate 54, which are sequentially fixedly connected from the closed end to the open end. The fixed block support 51 is located at the bottom of the first perforated plate 52. The first perforated plate 52, the arc-shaped plate 53, and the second perforated plate 54 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 50 through the fixed block 10. The rapid hydrogen exchange device 60 is installed on the integrated support 50, specifically on the hydrogen storage cylinder support, and is located away from the arc-shaped plate 53.

[0048] The rapid hydrogen exchange device 60 includes a push rod 61, a fork 62, and a button 63. The push rod 61 has its two ends respectively mounted on a first perforated plate 52 and a second perforated plate 54, 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 62 is fixedly mounted on the end of the push rod 61 near the pressure reducing valve A and can move with the push rod 61. The lower part of the fork 62 is engaged with the opening and closing sliding sleeve A2. The fork 62 is mounted on a guide shaft 64, which is located on the first perforated plate 52, ensuring that the fork 62 moves in a fixed direction and preventing rotational deviation. The button 63 is located on the end of the push rod 61 away from the pressure reducing valve A and protrudes from the open end of the gas cylinder chamber. Pressing the button 63 drives the push rod 61 to slide towards the closed end of the gas cylinder chamber. A limit ring 65 is also provided on the push rod 61 to limit the displacement range of the push rod 61. A second return spring 66 can also be provided between the limit ring 65 and the first perforated plate 52 to facilitate the reset of the push rod 61 after use.

[0049] When it is necessary to replace hydrogen storage cylinder B, press button 63 to cause push rod 61 to drive shift fork 62 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.

[0050] 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 in that, include Guide column bracket; The guide post has at least one end fixed to the guide post bracket; The first return spring is sleeved on the outside of the guide post; A fixing block is slidably mounted on the guide post, such that one end of the first reset spring is connected to the guide post bracket and the other end is connected to the fixing block.

2. The pressure reducing valve fixing device according to claim 1, characterized in that, The fixing block includes a base and a body. The body is disposed on the base, and the fixing block is slidably mounted on the guide post through through holes at both ends of the base.

3. The pressure reducing valve fixing device according to claim 2, characterized in that, The main body has a mounting hole for installing and locking the pressure reducing valve; the end of the mounting hole away from the base has an opening, which divides the main body into a first locking part and a second locking part; the first locking part and the second locking part are respectively provided with fixing holes, and the inner wall of the fixing holes is provided with internal threads; the size of the opening of the fixing holes is adjusted by cooperating with bolts to adjust the inner diameter of the mounting holes.

4. The pressure reducing valve fixing device according to claim 1, characterized in that, One end of the guide post is fixed to the guide post bracket, and the other end is fixed to the integrated bracket.

5. The pressure reducing valve fixing device according to claim 1, characterized in that, Both ends of the guide post are fixed to the guide post bracket.

6. A gas cylinder chamber, characterized in that, 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, characterized in that, A limit ring is provided on the push rod, and a second reset spring is provided between the limit ring and the first perforated plate.

10. The gas cylinder chamber according to claim 7, characterized in that, 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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