Hydrogen storage cylinder tail valve and using method thereof

Abstract

The invention discloses a hydrogen storage cylinder tail valve, and relates to the technical field of hydrogen energy storage, the hydrogen storage cylinder tail valve comprises a valve body assembly, the valve body assembly comprises a valve seat, and a flow channel is formed in the valve seat; the discharging connector can rotate by 360 degrees around the axis of the flow channel; a first O-ring; a compression nut; a TPRD component; through the 360-degree rotation design of a discharge connector in the valve body assembly, the discharge direction can be adjusted in all directions, the arrangement of a hydrogen storage system pipeline can be flexibly adjusted, a first O-shaped ring provides reliable air tightness in a high-pressure environment, it is ensured that gas cannot leak, and by combining a TPRD assembly fixed in the valve seat, when the environment temperature exceeds a preset value, the TPRD assembly is fixed to the interior of the valve seat, when the environment temperature exceeds the preset value, the discharge direction can be adjusted in all directions. Automatic pressure relief can be effectively triggered, airflow is accurately guided to the relief connector, safety is guaranteed, the problem that gas is prone to leakage due to the fact that an existing hydrogen storage cylinder tail valve is complex in required pipeline arrangement due to the fixed direction is solved, and the hydrogen storage cylinder tail valve can adjust the direction in a self-adaptive mode to reduce pipeline arrangement and prevent gas leakage.

Description

Technical Field

[0001] The present application relates to the field of hydrogen energy storage technology, and in particular to a tail valve of a hydrogen storage cylinder. Background Art

[0002] As the global demand for renewable energy and green energy continues to grow, hydrogen energy, as a clean and efficient energy carrier, has received widespread attention. Hydrogen fuel cell vehicles, due to their zero emissions, long driving range and fast hydrogen refueling speed, are gradually becoming an important solution to replace traditional fuel vehicles. High-pressure hydrogen storage cylinders are key equipment for storing and supplying hydrogen, and their performance is directly related to the safety and efficiency of hydrogen fuel cell vehicles.

[0003] In the high-pressure hydrogen storage system, the tail valve of the hydrogen storage cylinder is an important component for realizing hydrogen output and regulation. The existing tail valve structure is mostly a fixed design, and the direction of the discharge port cannot be adjusted, which has certain limitations in actual use. Since the layout of the on-board hydrogen storage system needs to adapt to the constraints of different vehicle models and installation space, the tail valve with a fixed direction may lead to complex hydrogen pipeline layout, too many bends or inconvenient pipe joints, thereby increasing the risk of leakage and the complexity of system design. In addition, during maintenance or emergency situations, the discharge port with a fixed direction may cause inconvenience to the operator, increasing the difficulty of operation and safety risks.

[0004] Therefore, we need a hydrogen storage cylinder tail valve to solve the problem that the existing hydrogen storage cylinder tail valve is prone to gas leakage due to the complex pipeline layout required for fixing the direction. The hydrogen storage cylinder tail valve can adaptively adjust the direction to reduce the pipeline layout and prevent gas leakage. Summary of the invention

[0005] The purpose of the present application is to solve the problem that the existing tail valve of a hydrogen storage cylinder has poor installation flexibility due to its fixed direction. In order to solve the above problem, the present application provides a tail valve of a hydrogen storage cylinder, which can adaptively adjust the direction of the tail valve of the hydrogen storage cylinder to facilitate installation.

[0006] To achieve the above-mentioned purpose, the embodiment of the present application adopts the following technical solutions: a valve body assembly, the valve body assembly includes: a valve seat, a flow channel is arranged inside the valve seat, and is used to guide the gas flow; a discharge joint, the discharge joint is arranged at the outlet end of the flow channel, and the discharge joint can rotate 360 ​​degrees around the axis of the flow channel; a first O-ring, the first O-ring is arranged between the contact surface of the discharge joint and the valve seat; a clamping nut, the clamping nut is arranged above the discharge joint, and is used to fix the discharge joint on the valve seat; a TPRD assembly, the TPRD assembly is fixed inside the valve seat, and the TPRD assembly is used to guide the airflow through the flow channel to the discharge joint when the ambient temperature exceeds the preset temperature.

[0007] In the above technical scheme, the embodiment of the present application achieves this by: through the 360-degree rotation design of the discharge joint in the valve body assembly, the discharge direction is fully adjustable, so that the pipeline layout of the hydrogen storage system can be flexibly adjusted, and the first O-ring provides reliable airtightness under high pressure environment to ensure that the gas will not leak. Combined with the TPRD assembly fixed inside the valve seat, when the ambient temperature exceeds the preset value, it can effectively trigger automatic pressure relief and accurately guide the airflow to the discharge joint to ensure safety. It solves the problem that the existing hydrogen storage cylinder tail valve is prone to gas leakage due to the complex pipeline layout required for direction fixing, and can enable the hydrogen storage cylinder tail valve to adaptively adjust the direction to reduce the pipeline layout and prevent gas leakage.

[0008] Further, according to an embodiment of the present application, the TPRD component includes:

[0009] The valve cover is connected to the inside of the valve seat by threads;

[0010] Glass bulb, the glass bulb is fixed in the valve cover, and the glass bulb rupture temperature is set to 105 degrees to 115 degrees;

[0011] The valve core is arranged at the lower end of the glass bubble, one end of the valve core is connected to the flow channel, and the valve core can move up and down under the action of gas pressure after the glass bubble breaks, so as to open the flow channel.

[0012] Further, according to an embodiment of the present application, a sponge plug is filled around the glass bubble.

[0013] Further, according to an embodiment of the present application, a second O-ring is provided at the connection between the valve core and the flow channel.

[0014] Further, according to an embodiment of the present application, a retaining ring is provided between the valve core and the valve seat to assist the second O-ring in sealing.

[0015] Furthermore, according to an embodiment of the present application, the sponge plug is made of high temperature resistant foamed silicone rubber.

[0016] Further, according to an embodiment of the present application, at least two grooves are provided on the inner surface of the discharge joint for placing the first O-ring, and grooves are provided at upper and lower positions of the outlet of the flow channel.

[0017] Further, according to an embodiment of the present application, the threaded connection between the clamping nut and the valve seat is a multi-start thread.

[0018] Further, according to an embodiment of the present application, the outer surface of the discharge joint is provided with a scale mark for indicating the rotation angle.

[0019] To achieve the above purpose, the embodiment of the present application also adopts the following technical solution: insert the discharge joint into the outlet end of the valve seat and lock it with a compression nut to ensure that the first O-ring achieves gas sealing;

[0020] Adjust the discharge joint to the desired direction by manually rotating it;

[0021] When the ambient temperature exceeds 105 to 115 degrees, the glass bulb of the TPRD assembly breaks, triggering the valve core to move under the action of gas pressure, opening the flow channel of the valve seat;

[0022] The gas is released through the flow channel and the discharge joint to the external environment or a preset safe discharge location.

[0023] Compared with the prior art, the present application has the following beneficial effects: the present application makes the discharge direction fully adjustable through the 360-degree rotation design of the discharge joint in the valve body assembly, so that the piping layout of the hydrogen storage system can be flexibly adjusted; the first O-ring provides reliable airtightness under high pressure environment to ensure that the gas will not leak; combined with the TPRD assembly fixed inside the valve seat, when the ambient temperature exceeds the preset value, it can effectively trigger automatic pressure relief and accurately guide the airflow to the discharge joint to ensure safety, and solve the problem that the existing hydrogen storage cylinder tail valve is prone to gas leakage due to the complex piping layout required for direction fixation, and the hydrogen storage cylinder tail valve can adaptively adjust the direction to reduce the piping layout and prevent gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0025] Figure 1 It is an axonometric view of the tail valve of a hydrogen storage cylinder.

[0026] Figure 2 The figure is a front view of a tail valve of a hydrogen storage cylinder.

[0027] Figure 3 It is a left view of the tail valve of a hydrogen storage cylinder.

[0028] Figure 4 yes Figure 2 "AA" section view of the.

[0029] Figure 5 yes Figure 3 "BB" section view

[0030] Figure 6 yes Figure 4 A partial enlarged view of .

[0031] In the attached figure

[0032] 1. Valve body assembly 11, valve seat 111, flow channel

[0033] 12. Discharge joint 13. First O-ring 14. Compression nut

[0034] 15. TPRD assembly 151, valve cover 152, glass bulb

[0035] 153, valve core 154, sponge plug 155, second O-ring DETAILED DESCRIPTION

[0036] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] For the purpose of simplicity and illustration, the principles of the embodiments are described primarily by reference to examples. In the following description, many specific details are presented to provide a thorough understanding of the embodiments. However, it is apparent that, for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, known methods and apparatus are not described in detail to avoid making these embodiments unnecessarily difficult to understand. In addition, all embodiments may be used in combination with each other.

[0040] Embodiment 1: Figure 1-5 As shown, a tail valve of a hydrogen storage cylinder comprises:

[0041] The valve body assembly 1 comprises: a valve seat 11, wherein a through flow channel 111 is arranged inside the valve seat 11 for guiding the gas flow in the hydrogen storage cylinder;

[0042] A discharge joint 12, which is disposed at the outlet end of the flow channel 111. The discharge joint 12 can rotate 360 ​​degrees around the axis of the flow channel 111, and a scale mark is provided on its outer surface to indicate the rotation angle of the discharge interface;

[0043] The first O-ring 13 is arranged between the contact surface of the discharge joint 12 and the valve seat 11. The inner surface of the discharge joint 12 is provided with two annular grooves for accommodating the first O-ring, which cooperate with the groove at the outlet end of the flow channel 111. The inner surface of the discharge joint 12 is provided with at least two grooves for accommodating the first O-ring 13. The upper and lower positions of the outlet of the flow channel 111 are provided with grooves. The multiple sealing structures effectively enhance the air tightness to ensure that no leakage occurs under high pressure environment;

[0044] The clamping nut 14 is arranged above the discharge joint 12 and is used to fix the discharge joint 12 on the valve seat 11; the threaded connection between the clamping nut 14 and the valve seat 11 is a multi-thread, and the clamping nut 14 adopts a multi-thread design, which can quickly lock the discharge joint 12, and at the same time, the discharge interface is pressed onto the valve seat 11 by providing a uniform clamping force, thereby preventing the discharge joint 12 from shaking during operation, thereby further improving the sealing effect.

[0045] The TPRD assembly 15 is fixed inside the valve seat 11 . The TPRD assembly 15 is used to guide the air flow through the flow channel 111 to flow to the discharge joint 12 when the ambient temperature exceeds a preset temperature.

[0046] The TPRD assembly 15 includes: a valve cover 151, which is connected to the inside of the valve seat 11 through threads; a glass bulb 152, which is fixed in the valve cover 151, and the rupture temperature of the glass bulb 152 is set to 105 degrees to 115 degrees. When the ambient temperature reaches the set value, the glass bulb 152 ruptures due to thermal expansion, triggering a pressure relief process; a valve core 153, which is arranged at the lower end of the glass bulb 152, and one end of the valve core 153 is connected to the flow channel 111. After the glass bulb 152 ruptures, the valve core 153 can move up and down under the action of gas pressure, and is used to open the flow channel 111, and the gas is quickly released to the external environment or a predetermined discharge pipeline through the flow channel 111 and the discharge joint 12;

[0047] The glass bulb 152 is surrounded by a sponge plug 154, which is used to prevent fragments from flowing into the flow channel 111 after the glass bulb 152 breaks and to provide a buffer zone for the valve core 153, so as to prevent the valve core 153 from being damaged due to excessive gas pressure. A retaining ring is provided between the valve core 153 and the valve seat 11, which is used to assist the second O-ring 155 in sealing. The second O-ring 155 is provided at the connection between the valve core 153 and the flow channel 111. The sponge plug 154 is made of high-temperature resistant foamed silicone rubber. The combination of the discharge joint 12 and the TPRD assembly 15 allows the gas to be safely guided to the discharge port during the pressure relief process, and the discharge direction can be flexibly adjusted by rotating the joint, thereby avoiding impact on sensitive areas or equipment, and further improving the operational safety of the system.

[0048] Through the 360-degree rotation design of the discharge joint 12 in the valve body assembly 1, the discharge direction is fully adjustable, so that the pipeline layout of the hydrogen storage system can be flexibly adjusted. The first O-ring provides reliable airtightness under high pressure environment to ensure that the gas will not leak. Combined with the TPRD assembly 15 fixed inside the valve seat 11, when the ambient temperature exceeds the preset value, it can effectively trigger automatic pressure relief and accurately guide the airflow to the discharge joint 12 to ensure safety. The problem that the existing tail valve of the hydrogen storage cylinder is prone to gas leakage due to the complex pipeline layout required for fixing the direction can be solved. The tail valve of the hydrogen storage cylinder can adaptively adjust the direction to reduce the pipeline layout to prevent gas leakage.

[0049] Embodiment 2: Figure 1-5 As shown, based on Example 1, this embodiment further provides a method for using a tail valve of a hydrogen storage cylinder, including:

[0050] During the installation process, the valve body assembly 1 is first fixed to the interface of the hydrogen storage cylinder, so that the flow channel 111 inside the valve seat 11 is connected to the gas outlet channel of the hydrogen storage cylinder.

[0051] The discharge joint 12 is inserted into the outlet end of the flow channel 111 of the valve seat 11, and the compression nut 14 is rotated to quickly lock it through the multi-thread. At the same time, the first O-ring is compressed to cooperate with the groove at the outlet of the flow channel 111 of the valve seat 11 to form a sealing structure to ensure air tightness and stability in a high-pressure hydrogen environment.

[0052] After installation is completed, the discharge port direction is adjusted by manually rotating the discharge joint 12 according to the downstream pipeline layout requirements. The discharge joint 12 can rotate 360 ​​degrees around the axis of the flow channel 111, and a scale mark is provided on the outer surface to facilitate the operator to accurately locate the discharge direction, improve the adaptability of the hydrogen storage system in complex vehicle layouts, reduce unnecessary pipeline bends and the number of connectors, thereby optimizing the pipeline layout, reducing the risk of leakage, and ensuring safety.

[0053] Under normal operating conditions, the TPRD assembly 15 is in a sealed state, and the second O-ring provides airtight protection. When the ambient temperature exceeds 110°C due to an accidental fire or other reasons, the glass bulb 152 fixed in the valve cover 151 ruptures due to expansion, triggering the pressure relief process. After the glass bulb 152 ruptures, the valve core 153 below moves upward under the action of high-pressure gas to open the flow channel 111, and the hydrogen storage gas is guided to the discharge channel of the discharge joint 12 for rapid discharge.

[0054] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A tail valve for a hydrogen storage cylinder, characterized in that: include: A valve body assembly, the valve body assembly comprising: A valve seat, wherein a flow channel is provided inside the valve seat for guiding the flow of gas; A discharge joint, which is arranged at the outlet end of the flow channel and can rotate 360 ​​degrees around the axis of the flow channel; a first O-ring disposed between a contact surface of the discharge joint and the valve seat; A compression nut, the compression nut is arranged above the discharge joint and is used to fix the discharge joint on the valve seat; A TPRD component is fixed inside the valve seat and is used to guide the air flow through the flow channel to the discharge joint when the ambient temperature exceeds a preset temperature.

2. A hydrogen storage cylinder tail valve according to claim 1, characterized in that: The TPRD components include: A valve cover, the valve cover being connected to the inside of the valve seat by threads; A glass bulb, wherein the glass bulb is fixed in the valve cover, and the rupture temperature of the glass bulb is set to 105 degrees to 115 degrees; A valve core is arranged at the lower end of the glass bubble, one end of the valve core is connected to the flow channel, and the valve core can move up and down under the action of gas pressure after the glass bubble breaks, so as to open the flow channel.

3. A hydrogen storage cylinder tail valve according to claim 2, characterized in that: The glass bubble is filled with a sponge plug.

4. A hydrogen storage cylinder tail valve according to claim 2, characterized in that: A second O-ring is provided at the connection between the valve core and the flow channel.

5. A hydrogen storage cylinder tail valve according to claim 4, characterized in that: A retaining ring is arranged between the valve core and the valve seat to assist the second O-ring in sealing.

6. A hydrogen storage cylinder tail valve according to claim 2, characterized in that: The sponge plug is made of high temperature resistant foamed silicone rubber.

7. A hydrogen storage cylinder tail valve according to claim 1, characterized in that: The inner surface of the discharge joint is provided with at least two grooves for accommodating the first O-ring, and grooves are provided at upper and lower positions of the outlet of the flow channel.

8. The tail valve of a hydrogen storage cylinder according to claim 1, characterized in that: The threaded connection between the clamping nut and the valve seat is a multi-start thread.

9. A hydrogen storage cylinder tail valve according to claim 1, characterized in that: The outer surface of the discharge joint is provided with a scale mark for indicating the rotation angle.

10. A method for using a tail valve of a hydrogen storage cylinder, characterized in that: A hydrogen storage cylinder tail valve applied to any one of claims 1 to 9, comprising the following steps: Insert the discharge connector into the outlet end of the valve seat and tighten it with the compression nut to ensure that the first O-ring achieves gas sealing; Manually rotate the discharge joint to adjust it to a desired direction; When the ambient temperature reaches 105 to 115 degrees, the glass bubble of the TPRD assembly breaks, triggering the valve core to move under the action of gas pressure, thereby opening the flow channel of the valve seat; The gas is released to the external environment or a preset safe discharge position through the flow channel and the channel of the discharge joint.

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