Cylinder valve for improving sealing performance and gas supply system applying same

Abstract

The utility model discloses a cylinder valve capable of improving sealing performance, the cylinder valve is connected with a gas cylinder in a sealing manner, a cylinder opening of the gas cylinder is provided with the cylinder valve, the cylinder valve comprises a lower shell located in the cylinder opening and an upper shell exposed out of the cylinder opening, the upper shell and the lower shell are internally provided with a plurality of channels, the channels are internally provided with different types of valve body assemblies respectively, and the valve body assemblies are arranged in the upper shell and the lower shell. A sealing ring abutting against a bottle opening is arranged at the bottom of the upper shell, the bottle valve further comprises a stopping piece arranged on the upper shell, the stopping piece extends from the upper shell to the lower shell, and projection parts of the stopping piece and the sealing ring in the vertical direction coincide. According to the scheme, the stop piece is arranged to resist the deformation of the sealing ring, and the projection parts of the stop piece and the sealing ring in the vertical direction coincide, so that the sealing ring is in contact with the stop piece preferentially and is stopped by the stop piece when being jacked and pressed, and therefore, the sealing ring is prevented from being deformed and damaged, is prevented from shifting and is prevented from being extruded, and the service life of the sealing ring is prolonged. And the sealing ring can keep a good sealing effect.

Description

Technical Field

[0001] This application belongs to the field of gas cylinder valves, specifically relating to a cylinder valve with improved sealing performance and a gas supply system using the same. Background Technology

[0002] The hydrogen supply system on a hydrogen fuel cell vehicle can be divided into two parts: one is the on-board high-pressure hydrogen supply system, which is generally provided by a gas cylinder supplier or a hydrogen supply system supplier; the other is the low-pressure hydrogen supply system, which is generally integrated into the fuel cell engine.

[0003] The hydrogen system of a hydrogen fuel cell mainly includes:

[0004] Hydrogen storage module: A hydrogen storage module is a component specifically designed to store hydrogen gas, and it is an important part of the hydrogen supply system in a hydrogen fuel cell vehicle. Specifically, the hydrogen storage module includes core elements such as high-pressure composite material cylinders, cylinder supports, and connecting pipelines. Each cylinder is equipped with a cylinder valve, and the cylinders are connected in parallel through pipelines.

[0005] Hydrogen refueling module: Includes a hydrogen refueling port and a high-pressure gauge. The hydrogen refueling port integrates a hydrogen nozzle, filter, and one-way valve. The hydrogen refueling module can also be integrated with a high-pressure exhaust valve upon user request, for gas replacement within the cylinder and for actively releasing high-pressure hydrogen from the cylinder during vehicle maintenance and repair.

[0006] Pressure regulating module (combination valve): Highly integrated and powerful, it significantly simplifies hydrogen systems. The combination valve internally includes components such as a filter, pressure reducing valve, low-pressure relief valve, exhaust shut-off valve, and pressure sensor. The low-pressure relief valve is used to release excess hydrogen through the low-pressure exhaust line when the pressure reducing valve malfunctions and causes overpressure at the outlet. The exhaust shut-off valve is used to actively release hydrogen from the downstream pipeline of the cylinder valve during gas replacement, hydrogen system maintenance, and repair.

[0007] In the hydrogen storage module, the cylinder valve typically integrates functional components such as a thermal fusion valve (TPRD), a manual shut-off valve, a solenoid valve, an overflow valve, a pressure sensor, and a temperature sensor, playing a crucial role in the safe use of the gas cylinder.

[0008] However, due to the low machining precision of gas cylinders, gaps are easily generated at the connection between the cylinder mouth and the cylinder valve when they are connected. This causes the seal to move into the gap under force, resulting in wear and damage to the seal and affecting the sealing performance at the cylinder mouth. Utility Model Content

[0009] This application provides a bottle valve that indicates sealing performance and a gas supply system using the same, which solves the problem that the sealing parts at the bottle valve and the bottle mouth are easily worn and damaged, affecting the sealing effect.

[0010] The technical solution adopted in this application is as follows:

[0011] A bottle valve with improved sealing performance is provided. The bottle valve is sealed to a gas cylinder. The gas cylinder is provided with a bottle valve at the cylinder opening. The bottle valve includes a lower shell located inside the cylinder opening and an upper shell exposed outside the cylinder opening. The upper shell and the lower shell are provided with multiple channels. Each channel is provided with a different type of valve body assembly. The bottom of the upper shell is provided with a sealing ring that abuts against the cylinder opening. The bottle valve also includes a stop member provided on the upper shell. The stop member extends from the upper shell to the lower shell, and the vertical projection of the stop member coincides with that of the sealing ring.

[0012] In a preferred embodiment of a bottle valve that improves sealing performance, the upper housing is provided with a mounting groove for mounting a stop member. The stop member includes a mounting portion located within the mounting groove and a stop portion protruding from the mounting groove, with the stop portion protruding from the upper housing.

[0013] In a preferred embodiment of a bottle valve that improves sealing performance, the stop member includes a stop ring. The stop ring has a mounting portion and a stop portion. The stop portion includes a horizontally extending straight section and an inclined section that extends upward from the end of the straight section toward the sealing ring. The projection of the inclined section in the vertical direction at least partially coincides with the projection of the sealing ring in the vertical direction.

[0014] In a preferred embodiment of a bottle valve that improves sealing performance, an clearance gap is provided between the inclined section and the sealing ring.

[0015] In a preferred embodiment of a bottle valve that improves sealing performance, the height of the stop portion is 0.1 mm to 0.3 mm.

[0016] In a preferred embodiment of a bottle valve that improves sealing performance, the stop member includes a stop block installed on the upper housing. The stop block has a mounting part and a stop part, and the stop block has multiple stops along the circumference of the upper housing.

[0017] In a preferred implementation of a bottle valve that improves sealing performance, multiple stop blocks are evenly distributed along the upper shell.

[0018] In a preferred embodiment of a bottle valve that improves sealing performance, the upper housing is provided with a downwardly protruding boss, which forms a stop.

[0019] In a preferred implementation of a bottle valve that improves sealing performance, the stop is a flexible component.

[0020] The present application also includes a gas supply system for use in a hydrogen fuel cell vehicle. The gas supply system includes a hydrogen refueling module, a pressure regulating module, and a hydrogen storage module. The hydrogen storage module includes a gas cylinder, a gas cylinder support, and connecting pipelines. The gas cylinder is equipped with a cylinder valve as described above at its opening.

[0021] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0022] (1) The present application solution provides a guarantee for the safe and stable use of gas cylinders by integrating multiple valve body components, such as shut-off valve components, TPRD components, and solenoid valve components, into the cylinder valve. By setting a sealing ring, the gas cylinder mouth is prevented from leaking out due to gaps caused by low processing precision when connected to the cylinder valve, thus improving the safety of gas cylinder use. By setting a stop, the sealing ring is prevented from being pressed into the connection gap between the cylinder valve and the cylinder mouth when the cylinder valve is connected or when the gas pressure inside the cylinder is high. When the sealing ring tends to slide upward and outward, the stop resists the deformation of the sealing ring. Since the sealing ring is designed to enhance the sealing effect at the cylinder mouth, it is placed close to the connection between the cylinder valve and the cylinder mouth. The stop is located outside the sealing ring, and by setting the stop to coincide with the vertical projection of the sealing ring, the sealing ring will first contact the stop when it is pressed and be resisted by the stop, thereby preventing the sealing ring from deforming and being damaged, preventing the sealing ring from shifting, and preventing it from being squeezed, so that the sealing ring can maintain a good sealing effect.

[0023] (2) By setting an installation groove, the stop is fixed in the upper housing, thus fixing the position of the stop and ensuring that it can reliably resist the sealing ring. The stop includes an installation part and a stop part. The installation part allows the stop to be limited within the upper housing, which not only limits the stop but also improves the compactness of the overall structure. The stop part protrudes from the upper housing, so that part of the stop is located outside the upper housing. When the sealing ring is subjected to upward pressure and shifts or deforms, the protruding stop part contacts the sealing ring, preventing the sealing ring from entering the gap between the bottle valve and the bottle mouth. This helps the sealing ring maintain its structural stability and achieve a good sealing effect.

[0024] (3) By setting an inclined section in the stop part, the inclined section extends upward towards the sealing ring. When the sealing ring moves upward and outward, it contacts the inclined surface of the inclined section first, so that it can resist the reaction force of the sealing ring and avoid damage such as impact scratches to the sealing ring.

[0025] (4) By setting a clearance gap, the sealing ring and the stop part do not contact each other under normal conditions, thereby avoiding frictional wear between the two and ensuring the sealing effect of the sealing ring.

[0026] (5) The height of the stop is preferably set to 0.1mm to 0.3mm. If the stop is too high, it will affect the connection between the bottle valve and the bottle mouth, which may lead to air leakage. If the stop is too low, it will not be able to stop the movement of the sealing ring in time, resulting in poor protection of the sealing ring and affecting the sealing effect of the sealing ring. Therefore, setting the height of the stop to 0.1mm to 0.3mm can stop the movement of the sealing ring without affecting the connection between the bottle valve and the bottle mouth. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 This is a schematic diagram of the bottle valve in one embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the sealing ring structure in one embodiment of the present invention;

[0030] Figure 3 for Figure 2 Enlarged view of part A;

[0031] Figure 4 This is a cross-sectional view of a temperature sensor and one-way valve assembly in one embodiment of the present invention;

[0032] Figure 5 This is a cross-sectional view of the upper shell of an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1-Bottle valve;

[0035] 100-Upper housing, 110-Main valve assembly, 120-Stop valve assembly, 130-Solenoid valve assembly, 140-TPRD assembly, 150-Sealing ring, 160-Stop ring, 161-Mounting part, 162-Stop part, 1621-Straight section, 1622-Inclined section, 163-Clearance clearance;

[0036] 200 - Lower housing, 210 - Temperature sensor assembly, 220 - Overflow valve assembly, 230 - Check valve assembly. Detailed Implementation

[0037] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0038] Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below. It should be noted that, unless otherwise specified, the embodiments of this application and the features thereof can be combined with each other.

[0039] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship 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 orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "an embodiment," "some embodiments," "example," "specific example," or "some examples," 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 this application. 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 can be combined in any suitable manner in one or more embodiments or examples.

[0042] This application provides a bottle valve with improved sealing performance, such as... Figures 1 to 5 As shown, the cylinder valve 1 is sealed to the gas cylinder. The cylinder valve 1 is provided at the cylinder opening. The cylinder valve 1 includes a lower housing 200 located inside the cylinder opening and an upper housing 100 exposed outside the cylinder opening. The upper housing 100 and the lower housing 200 are provided with multiple channels. Each channel is provided with a different type of valve body assembly 140. The bottom of the upper housing 100 is provided with a sealing ring 150 that abuts against the cylinder opening. The cylinder valve 1 also includes a stop member provided on the upper housing 100. The stop member extends from the upper housing 100 to the lower housing 200, and the vertical projection of the stop member and the sealing ring 150 coincides.

[0043] This application solution integrates multiple valve body components 140 into the cylinder valve 1, such as the shut-off valve component 120, the TPRD component 140, and the solenoid valve component 130, to ensure the safe and stable use of the gas cylinder. By setting a sealing ring 150, gaps are prevented from forming when the gas cylinder opening is connected to the cylinder valve 1 due to low machining precision, thus preventing gas leakage and improving the safety of gas cylinder use. By setting a stop, the sealing ring 150 is prevented from being pressed into the gap between the bottle valve 1 and the bottle mouth when the bottle valve 1 is connected to the bottle mouth or when the gas pressure inside the bottle is high. When the sealing ring 150 tends to slide upward and outward, the stop resists the deformation of the sealing ring 150. Since the sealing ring 150 is designed to enhance the sealing effect at the bottle mouth, it is placed close to the connection between the bottle valve 1 and the bottle mouth. Therefore, the stop is located outside the sealing ring 150. By setting the stop to coincide with the vertical projection of the sealing ring 150, the sealing ring 150 will first contact the stop when it is pressed and be resisted by the stop, thereby preventing the sealing ring 150 from deforming and being damaged, preventing the sealing ring 150 from shifting, and preventing it from being squeezed, so that the sealing ring 150 can maintain a good sealing effect.

[0044] It should be noted that each channel of the upper housing 100 is provided with one of the following: a main valve assembly 110, a shut-off valve assembly 120, a solenoid valve assembly 130, or a TPRD assembly 140. Each channel of the lower housing 200 is provided with one of the following: an overflow valve assembly 220, a temperature sensor assembly 210, or a check valve assembly 230. This type of valve assembly 140 is a commonly used assembly 140 in the bottle valve 1. Its assembly position can be seen from the attached drawings of this application, and will not be described in detail here.

[0045] In one embodiment, the upper housing 100 is provided with a mounting groove for mounting a stop member. The stop member includes a mounting portion 161 located in the mounting groove and a stop portion 162 protruding from the mounting groove. The stop portion 162 protrudes from the upper housing 100.

[0046] By providing an installation groove, the stop member is fixed in the upper housing 100, thus ensuring its position is fixed and guaranteeing a reliable blocking effect on the sealing ring 150. The stop member includes an installation part 161 and a stop part 162. The installation part 161 limits the stop member within the upper housing 100, both limiting its position and improving the overall structural compactness. The stop part 162 protrudes from the upper housing 100, positioning it outside the upper housing 100. When the sealing ring 150 is subjected to upward pressure and shifts or deforms, the protruding stop part 162 contacts the sealing ring 150, preventing it from entering the gap between the bottle valve 1 and the bottle neck. This helps maintain the stability of the sealing ring 150's shape and structure, achieving a good sealing effect.

[0047] In one preferred embodiment, the stop member includes a stop ring 160, the stop ring 160 is provided with a mounting portion 161 and a stop portion 162, the stop portion 162 includes a horizontally extending straight section 1621 and an inclined section 1622 extending obliquely upward from the end of the straight section 1621 toward the sealing ring 150, the projection of the inclined section 1622 in the vertical direction at least partially coincides with the projection of the sealing ring 150 in the vertical direction.

[0048] By providing an inclined section 1622 in the stop portion 162, the inclined section 1622 extends upward toward the sealing ring 150. When the sealing ring 150 moves upward and outward, it first contacts the inclined surface of the inclined section 1622. This not only provides a reaction force to resist the sealing ring 150, but also avoids damage such as impact scratches to the sealing ring 150.

[0049] Preferably, a clearance gap 163 is provided between the inclined section 1622 and the sealing ring 150.

[0050] By setting the clearance 163, the sealing ring 150 and the stop are not in contact under normal conditions, thereby avoiding frictional wear between them and ensuring the sealing effect of the sealing ring 150.

[0051] Preferably, the height of the stop portion 162 is 0.1mm to 0.3mm. Setting the height of the stop portion 162 to 0.1mm to 0.3mm is preferable because if the stop portion 162 is too high, it will affect the connection between the bottle valve 1 and the bottle opening, potentially leading to air leakage; if the stop portion 162 is too low, it will not be able to stop the movement of the sealing ring 150 in time, resulting in poor protection of the sealing ring 150 and affecting its sealing effect. Therefore, setting the height of the stop portion 162 to 0.1mm to 0.3mm not only stops the movement of the sealing ring 150 but also does not affect the connection between the bottle valve 1 and the bottle opening.

[0052] In a preferred embodiment, such as Figure 3 As shown, Figure 3 In the figure, d represents the height of the stop section. The height of the stop section 162 is set to 0.2mm.

[0053] In another embodiment, the stop member includes a stop block mounted on the upper housing 100. The stop block has a mounting portion 161 and a stop portion 162, and the stop block has a plurality of stops arranged circumferentially along the upper housing 100.

[0054] In this embodiment, the stop member is set in the form of a stop block (not shown in the figure). The stop block is also provided with a mounting part 161 and a stop part 162. Similarly, the stop block can be provided with an inclined part similar to that in the previous embodiment. When the stop block is installed, its contact surface with the upper housing 100 is small, which allows for flexible installation and makes assembly easier.

[0055] Furthermore, multiple stop blocks are evenly distributed along the upper housing 100. The evenly distributed stop blocks along the circumference facilitate circumferential stopping of the sealing ring 150 from multiple angles when it shifts, thus providing circumferential protection for the sealing ring 150.

[0056] In another embodiment, the upper housing 100 is provided with a downwardly protruding boss (not shown in the figure), which forms a stop.

[0057] In this embodiment, the stop is directly formed from the inner ring near the center of the upper housing 100, further reducing the overall assembly difficulty of the bottle valve 1. Similarly, the downward extension length of the boss is preferably 0.1mm to 0.3mm, and an inclined portion as in the aforementioned embodiment is provided on the side near the sealing ring 150 to resist displacement when the sealing ring 150 is compressed, while avoiding damage to the sealing ring 150.

[0058] In one embodiment, the stop is a flexible component. By providing a flexible stop, potential damage to the sealing ring 150 during contact between the stop and the sealing ring 150 can be further avoided. At the same time, it is beneficial to the tightness of the connection between the bottle valve 1 and the bottle mouth.

[0059] In addition, combined with the appendix Figure 4 It can be seen that, preferably, the two channels of the main valve assembly 110 and the shut-off valve assembly 120 are coaxially arranged in the upper housing 100. At the same time, the two channels of the TPRD assembly 140 and the solenoid valve assembly 130 are coaxially arranged in the upper housing 100, which reasonably optimizes the arrangement of the internal structure of the bottle valve and avoids assembly or application interference between the components.

[0060] The present application also includes a gas supply system for use in a hydrogen fuel cell vehicle. The gas supply system includes a hydrogen refueling module, a pressure regulating module, and a hydrogen storage module. The hydrogen storage module includes a gas cylinder, a gas cylinder support, and connecting pipelines. The gas cylinder is equipped with a cylinder valve 1 as described above at its cylinder opening.

[0061] Understandably, hydrogen fuel cell vehicles typically have a hydrogen storage module, a hydrogen refueling module, and a pressure regulating module. The hydrogen storage module includes high-pressure composite gas cylinders, gas cylinder supports, and connecting pipelines, etc. Each cylinder opening is equipped with a cylinder valve 1, and the gas cylinders are connected in parallel through pipelines.

[0062] The hydrogen refueling module includes a hydrogen refueling port and a high-pressure gauge. The hydrogen refueling port integrates functional components such as a hydrogen nozzle, filter, and one-way valve. The hydrogen refueling module can also integrate a high-pressure exhaust valve according to actual needs, for gas replacement in the gas cylinder and for actively releasing high-pressure hydrogen in the gas cylinder during vehicle maintenance and repair.

[0063] The pressure regulating module (combination valve) is highly integrated and powerful, significantly simplifying hydrogen systems. The combination valve internally includes functional components such as a filter, pressure reducing valve, low-pressure relief valve, exhaust shut-off valve, and pressure sensor. The low-pressure relief valve is used to release excess hydrogen through the low-pressure exhaust line when the pressure reducing valve malfunctions and causes overpressure at the outlet. The exhaust shut-off valve is used to actively release hydrogen from the downstream pipeline of cylinder valve 1 during gas replacement, hydrogen system maintenance, and repair.

[0064] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0065] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0066] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A bottle valve with improved sealing performance, characterized in that, The cylinder valve is sealed to the gas cylinder. The cylinder valve is provided at the cylinder opening. The cylinder valve includes a lower housing located inside the cylinder opening and an upper housing exposed outside the cylinder opening. The upper housing and the lower housing are provided with multiple channels. Each channel is provided with a different type of valve body assembly. The bottom of the upper housing is provided with a sealing ring that abuts against the cylinder opening. The cylinder valve also includes a stop member provided on the upper housing. The stop member extends from the upper housing to the lower housing, and the vertical projection of the stop member coincides with that of the sealing ring.

2. The bottle valve for improving sealing performance according to claim 1, characterized in that, The upper housing is provided with a mounting groove for mounting the stop member. The stop member includes a mounting portion located in the mounting groove and a stop portion protruding from the mounting groove. The stop portion protrudes from the upper housing.

3. A bottle valve for improving sealing performance according to claim 2, characterized in that, The stop member includes a stop ring, the stop ring having the mounting portion and the stop portion, the stop portion including a horizontally extending straight section and an inclined section extending upward from the end of the straight section toward the sealing ring, the projection of the inclined section in the vertical direction at least partially coinciding with the projection of the sealing ring in the vertical direction.

4. A bottle valve for improving sealing performance according to claim 3, characterized in that, A clearance gap is provided between the inclined section and the sealing ring.

5. A bottle valve for improving sealing performance according to claim 2, characterized in that, The height of the stop portion is 0.1mm to 0.3mm.

6. A bottle valve for improving sealing performance according to claim 2, characterized in that, The stop member includes a stop block installed on the upper housing. The stop block has the mounting part and the stop part, and the stop block has a plurality of stops along the circumference of the upper housing.

7. A bottle valve for improving sealing performance according to claim 6, characterized in that, The multiple stop blocks are evenly distributed along the upper housing.

8. A bottle valve for improving sealing performance according to claim 1, characterized in that, The upper housing is provided with a downwardly protruding boss, which forms the stop.

9. A bottle valve for improving sealing performance according to claim 1, characterized in that, The stop is a flexible component.

10. A gas supply system, characterized in that, The gas supply system is applied to a hydrogen fuel cell vehicle. The gas supply system includes a hydrogen refueling module, a pressure regulating module, and a hydrogen storage module. The hydrogen storage module includes a gas cylinder, a gas cylinder support, and connecting pipelines. The gas cylinder is provided with a cylinder valve as described in any one of claims 1-9 at its cylinder opening.

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