An easy-to-manufacture hydrogen valve

Abstract

This utility model discloses a hydrogen valve that is easy to process, relating to the field of hydrogen valves. It includes a valve body with an inlet and an outlet. The valve body has a primary pressure-reducing chamber and an outlet channel, with both ends connected to the inlet and the primary pressure-reducing chamber, respectively. The valve body also has an inlet flow channel and a pressure-reducing flow channel, with both ends connected to the primary pressure-reducing chamber and the inlet flow channel, respectively. The inlet flow channel connects to the outlet. A filter port is provided on the side wall of the valve body, containing a sintered metal filter element. A linear flow channel is provided within the valve body, with both ends connected to the filter port and the inlet flow channel, respectively. The outlet, inlet, pressure-reducing, and linear flow channels are all linear holes. Designing these as linear holes, compared to oblique or irregular holes, allows for single-pass linear machining using conventional equipment such as drilling machines, eliminating the need for multiple adjustments to machining angles and changes in tooling fixtures, thus reducing processing difficulty.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen valve technology, specifically a hydrogen valve that is easy to process. Background Technology

[0002] With the rapid development of the hydrogen energy industry, hydrogen valves, as core control components in hydrogen storage, transportation, and refueling systems, are increasingly widely used, placing stringent demands on their sealing reliability, pressure reduction stability, ease of processing, and cost control. The small size, easy leakage, and flammability / explosiveness of hydrogen molecules dictate that hydrogen valves must possess precise pressure reduction structures, reliable filtration protection, and stable sealing performance. Furthermore, to adapt to large-scale applications, valve processing efficiency and manufacturing costs have become key considerations. Existing hydrogen valves suffer from significant manufacturing challenges, primarily due to the high complexity of their flow channels. The outlet, pressure-reducing, charging, and filtering channels of existing hydrogen valves are often designed as curved, irregularly shaped, or oblique connecting holes. This necessitates multiple adjustments to the machining angle and replacement of tooling fixtures during valve body processing. This not only increases the difficulty of the drilling and milling process but also makes the flow channel connection accuracy prone to errors due to positioning deviations. Consequently, this can lead to uneven airflow resistance, fluctuations in pressure reduction, and even increased hydrogen leakage risk due to defects in the sealing surface. Furthermore, the cleaning and inspection of non-linear flow channels are challenging, making it difficult to ensure the absence of machining debris inside the channels. Impurities can easily scratch valve sealing components, affecting service life. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hydrogen valve that is easy to process, thereby solving the deficiencies of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a hydrogen valve that is easy to process, comprising a valve body, wherein the valve body is provided with an inlet and an outlet, the valve body is provided with a primary pressure reducing chamber, the valve body is provided with an outlet channel, the two ends of the outlet channel are respectively connected to the outlet and the primary pressure reducing chamber, the valve body is provided with an inlet channel and a pressure reducing channel, the two ends of the pressure reducing channel are respectively connected to the primary pressure reducing chamber and the inlet channel, the inlet channel is connected to the inlet, the side wall of the valve body is provided with a filter port, the filter port is provided with a sintered metal filter element, the valve body is provided with a linear channel, the two ends of the linear channel are respectively connected to the filter port and the inlet channel, and the outlet channel, the inlet channel, the pressure reducing channel and the linear channel are all linear holes.

[0005] Furthermore, the inflation channel includes an inflation nozzle mounting hole, an inflation hole, a primary pressure reducing hole, and a secondary pressure reducing hole that are sequentially connected in a direction away from the inflation nozzle. The inflation nozzle is installed in the inflation nozzle mounting hole, the pressure reducing channel is connected to the secondary pressure reducing hole, the diameter of the primary pressure reducing hole is smaller than the diameter of the secondary pressure reducing hole, and the diameter of the inflation hole is smaller than the diameter of the inflation nozzle mounting hole.

[0006] Furthermore, a manual shut-off valve is installed on the side wall of the valve body. The manual shut-off valve includes a needle valve core, a handle, and a threaded sleeve. The threaded sleeve is fixedly sleeved on the needle valve core and threaded through the valve body. The needle valve core passes through a secondary pressure reducing hole. The primary pressure reducing hole is located on the movement path of the needle valve core. The handle is fixedly connected to the end of the needle valve core away from the valve body.

[0007] Furthermore, the valve body is rectangular in shape, and the manual shut-off valve, air inlet, air outlet, primary pressure reducing chamber, and filter port are all arranged on different side walls of the valve body.

[0008] Furthermore, a small plug valve core is provided in the primary pressure reducing chamber, and a plug mounting hole is provided on the side wall of the valve body. The plug mounting hole is connected to the primary pressure reducing chamber, and a plug is fixedly connected to the small plug valve core. The plug thread is adapted to the plug mounting hole.

[0009] The beneficial effects of this utility model are: The exhaust channel, charging channel, depressurization channel, and linear channel are all designed as linear holes. Compared to the oblique holes and irregular holes in existing technologies, these can be machined in a single straight line using conventional equipment such as drilling machines. This eliminates the need for multiple adjustments to the machining angle and changes in tooling fixtures, significantly reducing the operational complexity of the drilling and milling process. Simultaneously, the unified positioning reference of the linear holes ensures precise connectivity of each channel, avoiding uneven airflow resistance and fluctuations in depressurization effect caused by channel misalignment. Furthermore, the smoothness of the inner wall of the linear holes is easily controlled, and cleaning and inspection can be performed directly through an endoscope, effectively removing machining debris and reducing the risk of impurities scratching the sealing components, indirectly extending the valve's service life. Attached Figure Description

[0010] Figure 1 This is a perspective view of a hydrogen valve that is easy to manufacture according to this utility model; Figure 2 Top view of a hydrogen valve of this utility model that is easy to manufacture Figure 1 ; Figure 3 for Figure 2 C-axis sectional view; Figure 4 Top view of a hydrogen valve of this utility model that is easy to manufacture Figure 2 ; Figure 5 for Figure 4 Sectional view along the BB direction; Figure 6 Top view of a hydrogen valve of this utility model that is easy to manufacture Figure 3 ; Figure 7 for Figure 6 Sectional view along line AA; In the diagram, 1-valve body, 2-inflation nozzle, 3-outlet nozzle, 4-primary pressure reducing chamber, 5-outlet channel, 6-small plug valve core, 7-inflation channel, 8-pressure reducing channel, 9-filter port, 10-metal sintered filter element, 11-linear channel, 12-inflation hole, 13-primary pressure reducing hole, 14-secondary pressure reducing hole, 15-outlet nozzle mounting hole, 16-needle valve core, 17-handle, 18-threaded sleeve, 19-plug mounting hole, 20-plug. Detailed Implementation

[0011] Example 1 like Figures 1 to 7 As shown, a hydrogen valve that is easy to process includes a valve body 1, an inlet 2 and an outlet 3 on the valve body 1, a primary pressure reducing chamber 4 inside the valve body 1, an outlet channel 5 inside the valve body 1, with the outlet 3 and the primary pressure reducing chamber 4 respectively connected at both ends of the outlet channel 5, and an inlet channel 7 and a pressure reducing channel 8 inside the valve body 1, with the pressure reducing channel 8 connected at both ends of the primary pressure reducing chamber 4 and the inlet channel 7 respectively, and the inlet channel 7 connected to the inlet 2, a filter port 9 on the side wall of the valve body 1, a sintered metal filter element 10 inside the filter port 9, and a linear channel 11 inside the valve body 1, with the filter port 9 and the inlet channel 7 respectively connected at both ends of the linear channel 11, and the outlet channel 5... The charging channel 7, the depressurizing channel 8, and the linear channel 11 are all linear orifices. Hydrogen enters the charging channel 7 of the valve body 1 through the charging nozzle 2, then enters the first-stage depressurizing chamber 4 through the depressurizing channel 8, then enters the outlet nozzle 3 through the outlet channel 5, and finally exits through the outlet nozzle 3. The outlet channel 5, the charging channel 7, the depressurizing channel 8, and the linear channel 11 are all designed as linear orifices, which can be formed in a single linear process by conventional equipment such as a drilling machine. There is no need to adjust the processing angle or change the tooling fixtures multiple times, which significantly reduces the operational complexity of the drilling and milling process. It can accurately ensure the connection accuracy of each channel and avoid the problems of uneven airflow resistance and fluctuation of depressurization effect caused by misalignment of the channels.

[0012] Example 2 Based on Example 1, such as Figures 1 to 5As shown, the inflation channel 7 includes an inflation nozzle mounting hole 15, an inflation hole 12, a primary pressure reducing hole 13, and a secondary pressure reducing hole 14, which are sequentially connected in a direction away from the inflation nozzle 2. The inflation nozzle 3 is installed in the inflation nozzle mounting hole 15. The pressure reducing channel 8 connects to the secondary pressure reducing hole 14. The diameter of the primary pressure reducing hole 13 is smaller than the diameter of the secondary pressure reducing hole 14, and the diameter of the inflation hole 12 is smaller than the diameter of the inflation nozzle mounting hole 15. Hydrogen flows from the primary pressure reducing hole 13 into the secondary pressure reducing hole 14 to complete the primary pressure reducing, and then flows from the secondary pressure reducing hole 14 into the primary pressure reducing chamber 4 to complete the secondary pressure reducing.

[0013] Example 3 Based on Example 2, such as Figure 1 As shown, the valve body 1 is rectangular. The manual shut-off valve, air inlet 2, air outlet 3, primary pressure reducing chamber 4, and filter port 9 are all arranged on different side walls of the valve body 1. Compared with traditional cylindrical valve bodies that can only be machined with oblique holes, setting the valve body 1 to a rectangular shape makes it easier to machine each inner hole into a linear shape, which can accurately ensure the connection accuracy of each flow channel. The smoothness of the inner wall of the linear hole is easy to control, and it can be directly inspected through an endoscope during cleaning and testing, which can effectively remove machining debris residue, reduce the risk of impurities scratching the sealing components, and indirectly extend the service life of the valve.

[0014] Example 4 Based on Example 3, such as Figures 1 to 7 As shown, a manual shut-off valve is installed on the side wall of the valve body 1. The manual shut-off valve includes a needle valve core 16, a handle 17, and a threaded sleeve 18. The threaded sleeve 18 is fixedly sleeved on the needle valve core 16 and threaded through the valve body 1. The needle valve core 16 passes into the secondary pressure reducing hole 14. The primary pressure reducing hole 13 is located on the moving path of the needle valve core 16. The end of the needle valve core 16 away from the valve body 1 is fixedly connected to the handle 17. By rotating the handle 17 to screw into the threaded sleeve 18, the needle valve core 16 can be driven to insert into the primary pressure reducing hole 13, thereby blocking the charging channel 7 and manually closing the hydrogen valve. The pressure reducing intensity can also be controlled by the length of the needle valve core 16 inserted into the primary pressure reducing hole 13 to achieve throttling and pressure reduction.

[0015] Example 5 Based on Embodiment 4, a small plug valve core 6 is provided in the primary pressure reducing chamber 4, and a plug mounting hole 19 is provided on the side wall of the valve body 1. The plug mounting hole 19 is connected to the primary pressure reducing chamber 4. A plug 20 is fixedly connected to the small plug valve core 6. The plug 20 is threaded to fit the plug mounting hole 19. The plug mounting hole 19 is sealed by the small plug valve core 6. The primary pressure reducing chamber 4 is easily processed by the plug mounting hole 19. The plug mounting hole 19 is then sealed by the small plug valve core 6.

Claims

1. A hydrogen valve that is easy to manufacture, comprising a valve body (1), characterized in that, The valve body (1) is provided with an air inlet (2) and an air outlet (3). The valve body (1) is provided with a first-stage pressure reducing chamber (4). The valve body (1) is provided with an air outlet channel (5). The two ends of the air outlet channel (5) are respectively connected to the air outlet (3) and the first-stage pressure reducing chamber (4). The valve body (1) is provided with an air inlet channel (7) and a pressure reducing channel (8). The two ends of the pressure reducing channel (8) are respectively connected to the first-stage pressure reducing chamber (4) and the air inlet channel (7). The air inlet channel (7) is connected to the air inlet (2). The side wall of the valve body (1) is provided with a filter port (9). The filter port (9) is provided with a metal sintered filter element (10). The valve body (1) is provided with a linear channel (11). The two ends of the linear channel (11) are respectively connected to the filter port (9) and the air inlet channel (7). The air outlet channel (5), the air inlet channel (7), the pressure reducing channel (8) and the linear channel (11) are all linear holes.

2. The hydrogen valve that is easy to process according to claim 1, characterized in that, The inflation channel (7) includes an inflation nozzle mounting hole (15), an inflation hole (12), a primary pressure reducing hole (13), and a secondary pressure reducing hole (14) connected sequentially in the direction away from the inflation nozzle (2). The inflation nozzle (2) is installed in the inflation nozzle mounting hole (15). The pressure reducing channel (8) is connected to the secondary pressure reducing hole (14). The diameter of the primary pressure reducing hole (13) is smaller than the diameter of the secondary pressure reducing hole (14). The diameter of the inflation hole (12) is smaller than the diameter of the inflation nozzle mounting hole (15).

3. The hydrogen valve that is easy to process according to claim 2, characterized in that, A manual shut-off valve is installed on the side wall of the valve body (1). The manual shut-off valve includes a needle valve core (16), a handle (17), and a threaded sleeve (18). The threaded sleeve (18) is fixedly sleeved on the needle valve core (16). The threaded sleeve (18) is threaded through the valve body (1). The needle valve core (16) is inserted into the secondary pressure reducing hole (14). The primary pressure reducing hole (13) is located on the moving path of the needle valve core (16). The end of the needle valve core (16) away from the valve body (1) is fixedly connected to the handle (17).

4. The hydrogen valve that is easy to process according to claim 3, characterized in that, The valve body (1) is rectangular in shape, and the manual shut-off valve, air inlet (2), air outlet (3), primary pressure reducing chamber (4) and filter port (9) are all arranged on different side walls of the valve body (1).

5. A hydrogen valve that is easy to process according to claim 1, characterized in that, The first-stage pressure reducing chamber (4) is provided with a small plug valve core (6), and the side wall of the valve body (1) is provided with a plug mounting hole (19). The plug mounting hole (19) is connected to the first-stage pressure reducing chamber (4). The small plug valve core (6) is fixedly connected with a plug (20), and the plug (20) is threaded to fit the plug mounting hole (19).

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