Hydrogen integrated cylinder valve for vehicle

Abstract

The invention discloses a vehicle hydrogen integrated cylinder valve, and relates to the technical field of valves, the vehicle hydrogen integrated cylinder valve comprises a valve body assembly, a manual valve assembly, an overflow valve assembly and an electromagnetic valve assembly, the valve body assembly is provided with a cavity and at least one channel communicated with the cavity, and the overflow valve assembly comprises an overflow valve seat; an overflow valve core; an overflow valve spring; an adjusting hole is formed in the overflowing valve element; the manual valve assembly is arranged at the upper end of the valve body assembly, the electromagnetic valve assembly is arranged at the lower end of the valve body assembly, the overflowing valve assembly is integrated in a cavity of the valve body assembly, an overflowing valve seat, an overflowing valve element and an overflowing valve spring are integrated in the cavity, and meanwhile control and reset actions of gas flowing are achieved through a sealing face and an adjusting hole. External connecting pieces are greatly reduced, the overall structure integration degree of the valve is optimized, therefore, the gas leakage risk is reduced, the problem that gas is prone to leakage due to the fact that an existing valve is low in integration degree is solved, the integration degree of the valve can be improved, and gas leakage is prevented.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a vehicle-used hydrogen integrated bottle valve. Background Art

[0002] With the development of hydrogen energy technology, high-pressure hydrogen storage bottles have gradually become one of the core components of fuel cell vehicles. In these hydrogen storage bottles, the design of the valves plays an important role in ensuring the safety and stability of the hydrogen storage system. Existing automotive high-pressure hydrogen storage bottle combination valves are usually composed of multiple functional components, including manual valves, solenoid valves, temperature sensors and pressure release devices, etc. These components can work together to complete the filling, deflation and emergency protection functions of the hydrogen storage bottles under abnormal conditions.

[0003] In the prior art, overcurrent protection is one of the important functions of the combination valve, which is usually achieved through an overcurrent valve assembly. When an abnormality occurs in the downstream pipeline (such as disconnection or leakage) causing the air flow velocity to suddenly increase, the overcurrent valve will quickly close to prevent the gas from being released too quickly, thereby protecting the hydrogen storage bottle and downstream components. In these prior arts, the overcurrent valve and other components are often designed independently, resulting in a complex overall structure and high maintenance costs, which increases the leakage points and leakage risks of the hydrogen storage system.

[0004] Therefore, we need an integrated hydrogen bottle valve for vehicles to solve the problem that the existing valve has low integration and causes easy gas leakage, and can improve the valve integration to prevent gas leakage. Summary of the invention

[0005] The purpose of the present application is to solve the problem that the existing valves have low integration and thus gas is easily leaked. In order to solve the above problem, the present application provides a vehicle hydrogen integrated bottle valve, which can improve the valve integration and prevent gas leakage.

[0006] To achieve the above-mentioned purpose, the embodiment of the present application adopts the following technical solutions: a valve body assembly, a manual valve assembly, an overflow valve assembly, and a solenoid valve assembly, characterized in that the valve body assembly is provided with a chamber and at least one channel connected to the chamber, the overflow valve assembly is installed in the chamber, and the overflow valve assembly includes: an overflow valve seat, the overflow valve seat is fixed in the chamber; an overflow valve core, the overflow valve core is arranged at the lower end of the overflow valve seat, and the overflow valve core can slide up and down relative to the overflow valve seat; an overflow valve spring, the overflow valve spring is arranged between the overflow valve seat and the overflow valve core; a sealing surface is arranged in the overflow valve seat, which is used for the overflow valve core to contact with the overflow valve seat to form a seal when the airflow exceeds a predetermined flow rate; an adjustment hole is arranged inside the overflow valve core, and the adjustment hole is used to adjust the pressure on both sides of the overflow valve core to control the resetting action of the overflow valve core; the manual valve assembly is arranged at the upper end of the valve body assembly, and the solenoid valve assembly is arranged at the lower end of the valve body assembly.

[0007] In the above technical scheme, the embodiment of the present application integrates an excess flow valve assembly in the chamber of the valve body assembly, integrates the excess flow valve seat, the excess flow valve core and the excess flow valve spring inside the chamber, and realizes the control and resetting action of gas flow through the sealing surface and the adjustment hole, thereby greatly reducing external connecting parts, optimizing the overall structural integration of the valve, thereby reducing the risk of gas leakage, solving the problem of low integration of existing valves leading to easy gas leakage, and improving the valve integration to prevent gas leakage.

[0008] Further, according to an embodiment of the present application, the outer wall of the flow valve seat is connected to the inner wall of the valve body assembly through threads, and a sealing ring is provided at the connection.

[0009] Further, according to an embodiment of the present application, the sliding range of the overflow valve core is limited by a limit step provided on the inner wall of the overflow valve seat.

[0010] Further, according to an embodiment of the present application, the adjustment hole of the flow valve core is arranged at a middle position with the flow valve, so as to increase the pressure balancing speed.

[0011] Further, according to an embodiment of the present application, a temperature sensor assembly and a TPRD assembly are provided on the valve body assembly.

[0012] Further, according to an embodiment of the present application, the temperature sensor assembly includes a temperature sensing element and a cable, the temperature sensing element is fixed to the outer wall of the valve body assembly, and the cable is connected to the control system.

[0013] Further, according to an embodiment of the present application, the TPRD assembly includes a thermal trigger element and a pressure relief channel, and the thermal trigger element is arranged outside the valve body assembly.

[0014] Further, according to an embodiment of the present application, the solenoid valve assembly includes a solenoid coil and a solenoid valve core, the solenoid coil is fixed at the lower end of the valve body assembly, and the solenoid coil is electrically connected to a vehicle control unit for controlling an airflow switch.

[0015] Further, according to an embodiment of the present application, the overflow valve spring is configured as a cylindrical coil spring.

[0016] Further, according to an embodiment of the present application, the manual valve assembly is connected to the valve body assembly through threads.

[0017] Compared with the prior art, the present application has the following beneficial effects: the present application integrates the excess flow valve assembly in the chamber of the valve body assembly, integrates the excess flow valve seat, the excess flow valve core and the excess flow valve spring inside the chamber, and realizes the control and resetting action of the gas flow through the sealing surface and the adjustment hole, thereby greatly reducing external connecting parts, optimizing the overall structural integration of the valve, thereby reducing the risk of gas leakage, solving the problem of low integration of existing valves leading to easy gas leakage, and can improve the valve integration to prevent gas leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present application is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 The isometric view of an integrated hydrogen bottle valve for a vehicle.

[0020] Figure 2 The diagram is a front view of a hydrogen integrated bottle valve for a vehicle.

[0021] Figure 3 The left side view of a hydrogen integrated bottle valve for a vehicle.

[0022] Figure 4 yes Figure 2 "AA" section view of the.

[0023] Figure 5 yes Figure 3 "BB" section view of the.

[0024] In the attached figure

[0025] 1. Valve body assembly 11, chamber 12, channel

[0026] 2. Excess flow valve assembly 21, excess flow valve seat 22, excess flow valve core

[0027] 221, adjustment hole 23, flow valve spring 3, manual valve assembly

[0028] 31. Manual valve core 32. Handle 4. Solenoid valve assembly

[0029] 41, electromagnetic coil 42, electromagnetic valve core 5, TPRD assembly DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Embodiment 1: Figure 1-5 As shown, a vehicle hydrogen integrated bottle valve comprises:

[0035] A valve body assembly 1, a manual valve assembly 3, an overflow valve assembly 2, a solenoid valve assembly 4, a temperature sensor assembly and a TPRD assembly 5. The valve body assembly 1 is made of high-strength metal material and has high pressure resistance and corrosion resistance. A chamber 11 and channels 12 connected to the multiple chambers 11 are arranged inside. Among them, the channel 12 near the upper end of the valve body assembly 1 is an air inlet channel 12 and an air outlet channel 12 for the entry and exit of gas. The overflow valve assembly 2, the solenoid valve assembly 4 and sealing parts are integrated in the chamber 11, thereby improving the overall integration of the valve, reducing external connectors, and effectively reducing the risk of gas leakage.

[0036] The excess flow valve assembly 2 is installed in the chamber 11 of the valve body assembly 1, and includes an excess flow valve seat 21, an excess flow valve core 22 and an excess flow valve spring 23. The excess flow valve seat 21 is fixed to the inner wall of the valve body assembly 1 by threads, and a sealing ring is provided at the connection to ensure air tightness. The excess flow valve core 22 can slide in the excess flow valve seat 21, and a sealing surface is provided at its upper end to cooperate with the excess flow valve seat 21, which is used to achieve sealing when the airflow exceeds a predetermined flow rate to prevent gas leakage.

[0037] An adjusting hole is provided inside the overflow valve core 22 for quickly balancing the pressure on both sides of the overflow valve core 22 , thereby controlling the resetting action of the overflow valve core 22 .

[0038] The overflow valve spring 23 is a cylindrical helical spring, which is arranged between the overflow valve seat 21 and the overflow valve core 22. By selecting different elastic coefficients, it is ensured that the overflow valve core 22 can respond correctly under various pressure conditions.

[0039] The manual valve assembly 3 is installed at the upper end of the valve body assembly 1 and is fixedly connected to the valve body assembly 1 through threads. A sealing ring is provided at the threaded connection to prevent gas leakage. The manual valve assembly 3 includes a manual valve core 31 and a handle 32 connected to it. Manual control of gas flow or closing can be manually achieved by rotating the handle 32.

[0040] The solenoid valve assembly 4 is installed at the lower end of the valve body assembly 1, and includes a solenoid coil 41 and a solenoid valve core 42. The solenoid coil 41 is fixed to the outer wall of the valve body assembly 1 and is electrically connected to the vehicle control unit. It is used to control the airflow switch according to the system signal and is used to manage the gas in the hydrogen storage cylinder.

[0041] The temperature sensor assembly and the TPRD assembly 5 are installed on the outer wall of the valve body assembly 1. The temperature sensor assembly includes a temperature sensing element and a cable. The temperature sensing element is used to sense the temperature changes on the valve body surface in real time. The cable transmits the signal to the vehicle control system to realize the temperature monitoring of the hydrogen storage bottle. The TPRD assembly 5 includes a thermistor trigger element and a pressure relief channel 12. When the temperature around the hydrogen storage bottle exceeds a predetermined value, the thermistor trigger element activates the pressure relief channel 12 to release the high-pressure hydrogen in the bottle to prevent the hydrogen storage bottle from exploding, thereby ensuring the safety of vehicle operation.

[0042] Embodiment 2: Figure 1-5 As shown, based on Example 1, this embodiment further provides a method for using a vehicle hydrogen integrated bottle valve, including:

[0043] When hydrogen needs to be filled into the hydrogen storage cylinder, external high-pressure hydrogen enters the chamber 11 of the valve body assembly 1 through the air inlet channel 12 of the valve body assembly 1. During the inflation process, the gas first passes through the overflow valve seat 21 of the overflow valve assembly 2 and its internal channel 12, pushing the overflow valve core 22 to move downward, compressing the overflow valve spring 23, so that the overflow valve core 22 separates from the sealing surface, and the gas smoothly enters the hydrogen storage cylinder. The overflow valve core 22 maintains the pressure balance on both sides through the internal adjustment hole 221, ensuring the stability of the inflation flow rate and avoiding component damage due to excessive airflow.

[0044] When it is necessary to supply gas from the hydrogen storage cylinder to the outside, open the manual valve assembly 3 or activate the solenoid valve assembly 4 through the control system. The solenoid coil 41 of the solenoid valve receives the signal from the control unit and drives the solenoid valve core 42 to operate, opening the air flow channel 12. The high-pressure hydrogen in the hydrogen storage cylinder flows out through the channel 12 of the valve body assembly 1, passes through the overflow valve seat 21 and the overflow valve core 22 in turn, flows into the chamber 11, and finally flows out through the gas outlet channel 12. During normal gas supply, the overflow valve core 22 maintains a stable open state under the action of the overflow valve spring 23, and the gas flow flows smoothly through the channel 12.

[0045] During the gas supply process, when a sudden abnormality occurs in the downstream pipeline (such as pipeline rupture or abnormal increase in flow rate), the gas flow velocity exceeds the preset value of the overflow valve assembly 2, causing the overflow valve core 22 to slide upward and contact the sealing surface of the overflow valve seat 21, quickly closing the overflow valve assembly 2 to prevent the gas from flowing too fast, thereby protecting the hydrogen storage bottle and downstream equipment. At the same time, the adjustment hole 221 inside the overflow valve core 22 allows a small amount of gas to balance the pressure on both sides of the overflow valve core 22, ensuring that after the fault is eliminated, the overflow valve core 22 can be smoothly reset to restore the normal gas supply state.

[0046] 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 vehicle hydrogen integrated bottle valve, comprising: A valve body assembly, a manual valve assembly, a flow valve assembly, and a solenoid valve assembly, wherein the valve body assembly is provided with a chamber and at least one channel communicating with the chamber, the flow valve assembly is installed in the chamber, and the flow valve assembly comprises: A flow valve seat, the flow valve seat being fixed in the chamber; An overflow valve core, the overflow valve core is arranged at the lower end of the overflow valve seat, and the overflow valve core can slide up and down relative to the overflow valve seat; An overflow valve spring, the overflow valve spring being arranged between the overflow valve seat and the overflow valve core; A sealing surface is provided in the overflow valve seat, which is used for the overflow valve core to contact with the overflow valve seat to form a seal when the airflow exceeds a predetermined flow rate; An adjusting hole is provided inside the overflow valve core, and the adjusting hole is used to adjust the pressure on both sides of the overflow valve core to control the reset action of the overflow valve core; The manual valve assembly is arranged at the upper end of the valve body assembly, and the solenoid valve assembly is arranged at the lower end of the valve body assembly.

2. The vehicle hydrogen integrated bottle valve according to claim 1, characterized in that: The outer wall of the flow valve seat is connected to the inner wall of the valve body assembly through threads, and a sealing ring is arranged at the connection.

3. The vehicle hydrogen integrated bottle valve according to claim 1, characterized in that: The sliding range of the overflow valve core is limited by a limiting step arranged on the inner wall of the overflow valve seat.

4. The vehicle hydrogen integrated bottle valve according to claim 1, characterized in that: The regulating hole of the overflow valve core is arranged at the middle position of the overflow valve, so as to increase the pressure balancing speed.

5. The vehicle hydrogen integrated bottle valve according to claim 1, characterized in that: The valve body assembly is provided with a temperature sensor assembly and a TPRD assembly.

6. The vehicle hydrogen integrated bottle valve according to claim 5, characterized in that: The temperature sensor assembly includes a temperature sensing element and a cable. The temperature sensing element is fixed to the outer wall of the valve body assembly, and the cable is connected to a control system.

7. The vehicle hydrogen integrated bottle valve according to claim 5, characterized in that: The TPRD assembly includes a thermal trigger element and a pressure relief channel, and the thermal trigger element is arranged outside the valve body assembly.

8. The vehicle hydrogen integrated bottle valve according to claim 1, characterized in that: The solenoid valve assembly includes a solenoid coil and a solenoid valve core. The solenoid coil is fixed at the lower end of the valve body assembly. The solenoid coil is electrically connected to a vehicle control unit and is used to control an airflow switch.

9. The vehicle hydrogen integrated bottle valve according to claim 1, characterized in that: The overflow valve spring is configured as a cylindrical helical spring.

10. The vehicle hydrogen integrated bottle valve according to claim 1, characterized in that: The manual valve assembly is connected to the valve body assembly via threads.

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