Self-cleaning high-pressure hydrogen pressure reducing valve and method of use thereof

Abstract

The application discloses a self-cleaning high-pressure hydrogen pressure reducing valve and a use method thereof, and relates to the technical field of self-cleaning high-pressure hydrogen pressure reducing valves, and comprises an equipment main body, a filtering cavity is arranged in the equipment main body, a fixing seat is fixedly installed on the filtering cavity, a centrifugal assembly is arranged on the fixing seat, and the application further comprises the following steps: S1: high-pressure hydrogen is input into the filtering cavity through an air inlet channel, and the impact force generated by the flowing hydrogen on corresponding guide vanes can drive a disc and multiple guide vanes to rotate. The application has the advantages that the centrifugal assembly can drive a filter cartridge to rotate, so that impurities adhered to the surface of the filter cartridge and impurities blocking filter holes are thrown out, the self-cleaning effect of the filter cartridge is achieved, and when the filter cartridge is blocked intensively, the cleaning assembly can clean the filter holes on the filter cartridge one by one by blowing air, so that the filtering effect and efficiency of the filter cartridge on the flowing hydrogen can be improved, and the stability of the continuous operation of the equipment can be improved.

Description

Technical Field

[0001] This invention relates to the field of self-cleaning high-pressure hydrogen pressure reducing valves, and more particularly to a self-cleaning high-pressure hydrogen pressure reducing valve and its usage method. Background Technology

[0002] High-pressure hydrogen pressure reducing valves are key safety control components in hydrogen energy systems. Their core function is to precisely regulate the pressure of upstream high-pressure hydrogen to the pressure required by downstream equipment. However, during the preparation, transportation, and storage of hydrogen, solid or liquid impurities can easily be mixed in. When these impurities flow through the pressure reducing valve with the hydrogen flow, they can cause wear on the valve core, diaphragm, and other precision components inside the valve, thereby increasing the safety risks of leakage and damage to the pressure reducing valve. Therefore, existing high-pressure hydrogen pressure reducing valves usually have a filter cartridge installed inside to filter the flowing hydrogen, thereby intercepting impurities and protecting the precision components inside the valve.

[0003] However, to ensure that the filter cartridge can maintain the filtration effect and filtration speed of hydrogen flowing through the pressure reducing valve, it is usually necessary for staff to disassemble the pressure reducing valve regularly and clean the filter cartridge inside. This maintenance method not only increases the workload of the staff, but also requires interrupting the normal operation of the pressure reducing valve, reducing the stability of continuous equipment operation. To address this issue, we propose a self-cleaning high-pressure hydrogen pressure reducing valve and its usage method. Summary of the Invention

[0004] The purpose of this invention is to solve the problems mentioned in the background art by proposing a self-cleaning high-pressure hydrogen pressure reducing valve and its usage method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A self-cleaning high-pressure hydrogen pressure reducing valve includes a main body, a filter chamber inside the main body, a fixed seat fixedly installed on the filter chamber, a centrifugal component on the fixed seat, and a cleaning component on the fixed seat.

[0007] The centrifugal assembly includes an annular slide groove 1 formed on a fixed base, on which slide rods evenly distributed in a ring are rotatably mounted, and a filter cylinder is fixedly mounted between the slide rods. A turbulence mechanism is mounted on the fixed base, and an actuating component is mounted on the filter chamber.

[0008] The cleaning assembly includes an air collecting cylinder fixedly installed on a fixed base, a one-way valve fixedly installed on the inner wall of the air collecting cylinder, two air blowing pipes fixedly connected to the air collecting cylinder, two air gathering covers fixedly installed on the air collecting cylinder that cooperate with the corresponding air blowing pipes, and an air gathering component installed on the filter chamber.

[0009] A method of using a self-cleaning high-pressure hydrogen pressure reducing valve, comprising the following steps:

[0010] S1: After high-pressure hydrogen enters the filter chamber through the air inlet channel, the impact force of the flowing hydrogen on the corresponding guide vanes can drive the disc and multiple guide vanes to rotate. At this time, the guiding force applied to the flowing hydrogen by the turbulence mechanism can drive the high-pressure hydrogen to flow downward in a spiral rotation, and complete the initial filtration of the high-pressure hydrogen in this process, which helps to improve the effect of subsequent filter cartridges for further filtration of hydrogen.

[0011] S2: At the same time, when the disc rotates under force, the disc and the centrifugal assembly drive the filter cartridge to rotate relative to the high-pressure hydrogen, generating shear force. This shear force throws out the impurities attached to the surface of the filter cartridge and the impurities in the filter holes, thereby achieving the self-cleaning effect of the filter cartridge, ensuring the continuous filtration effect and efficiency of the filter cartridge for hydrogen, and ensuring the stability of the equipment operation.

[0012] S3: The hydrogen gas filtered by the filter cartridge will continue to flow upward along the connecting channel between the inner side of the filter cartridge and the inner side of the fixed base, and after being depressurized by the regulator, it will be discharged from the equipment through the gas outlet channel.

[0013] S4: If the filter cartridge becomes increasingly clogged, the cleaning component, in conjunction with the two air blowing pipes, can clean each filter hole on the filter cartridge one by one from the inside. This can help to further improve the cleaning effect of the equipment on the filter cartridge, further ensure the continuous filtration effect and speed of the hydrogen flowing through the filter cartridge, and help to further improve the stability of the equipment operation.

[0014] Compared with existing technologies, the advantages of this invention are:

[0015] 1. In the process of depressurizing high-pressure hydrogen, the present invention uses a centrifugal component to drive the filter cartridge to rotate relative to the high-pressure hydrogen, generating shear force. This shear force throws out impurities adhering to the surface of the filter cartridge and impurities clogging the filter holes, thereby achieving a self-cleaning effect of the filter cartridge. This helps to improve the filtration effect and filtration speed of the filter cartridge for the continuous flow of hydrogen, and also helps to improve the stability of the continuous operation of the equipment.

[0016] 2: In the process of depressurizing high-pressure hydrogen, if the filter cartridge becomes increasingly clogged, the cleaning component can use the high-speed airflow from two air blowing pipes to clean the filter holes on the filter cartridge one by one. This can help to further improve the automatic cleaning effect of the filter cartridge, further improve the continuous filtration effect and filtration speed of the filter cartridge for the flowing hydrogen, and further improve the stability of the continuous operation of the equipment. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 for Figure 1 A frontal view after sectional inspection;

[0019] Figure 3 for Figure 2 A three-dimensional schematic diagram;

[0020] Figure 4 for Figure 3 A schematic diagram of the internal components of the main body of the equipment;

[0021] Figure 5 for Figure 1 A cross-sectional view of the main body of the equipment.

[0022] Figure 6 for Figure 5 Cross-sectional view of the central fixed base and the disc;

[0023] Figure 7 for Figure 6 Top view of the drive component;

[0024] Figure 8 for Figure 4 A schematic diagram of the structure of the cleaning component;

[0025] Figure 9 for Figure 8 A schematic diagram of the structure of part A;

[0026] Figure 10 for Figure 4 Schematic diagram of the gas-coordinating component;

[0027] Figure 11 for Figure 10 Top view after sectional view;

[0028] Figure 12 for Figure 11 A three-dimensional schematic diagram.

[0029] In the diagram: 1. Main body of the equipment; 2. Regulator; 3. Air inlet channel; 4. Filter chamber; 5. Air outlet channel; 6. Mounting base; 7. Baffle;

[0030] 8. Centrifugal assembly; 81. Disc; 82. Filter cartridge; 83. Limiting rod; 84. Return spring; 85. Float; 86. Limiting plate; 87. Guide vane; 88. Tooth block; 89. Rotating shaft; 810. Rotating gear; 811. Parallel shaft gear;

[0031] 9. Cleaning components; 91. Air collection cylinder; 92. One-way valve; 93. Compression spring; 94. Sealing plate; 95. Support block; 96. Collection hood; 97. Air supply pipe; 98. Air gathering hood; 99. Air blowing pipe; 910. Scraper. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Reference Figures 1-12 A self-cleaning high-pressure hydrogen pressure reducing valve includes a main body 1, a filter chamber 4 inside the main body 1, a fixed seat 6 fixedly installed on the filter chamber 4, a centrifugal component 8 on the fixed seat 6, and a cleaning component 9 on the fixed seat 6.

[0034] As a key safety control component of hydrogen energy systems, the high-pressure hydrogen pressure reducing valve's core function is to precisely reduce the pressure of upstream high-pressure hydrogen (such as 35MPa / 70MPa in vehicle-mounted hydrogen storage cylinders and 90MPa in hydrogen refueling station storage tanks) to the pressure required by downstream equipment (such as 0.1-0.5MPa in fuel cell stacks and 2-5MPa in low-pressure delivery pipelines). At the same time, it can also offset upstream pressure fluctuations and downstream flow changes in real time, achieving a stable output pressure and effectively preventing safety accidents such as leaks and explosions caused by abnormal pressure.

[0035] Meanwhile, during the preparation, transportation (such as catalyst particles in water electrolysis for hydrogen production), transportation (such as rust debris in pipelines and metal powder from valve wear), and storage (such as impurities on the inner wall of hydrogen storage cylinders), hydrogen is easily mixed with solid or liquid impurities. When hydrogen carrying these impurities flows through the pressure reducing valve, these impurities will wear down the valve core, diaphragm, and other precision components inside the pressure reducing valve, reducing its service life. Therefore, existing high-pressure hydrogen pressure reducing valves usually have a filter cartridge inside that can filter impurities carried in the hydrogen.

[0036] Reference Figures 2-7 The main body 1 of the equipment has an air inlet channel 3 connected to the filter chamber 4, and an air outlet channel 5 connected to the filter chamber 4. A regulator 2 is installed between the filter chamber 4 and the fixed base 6.

[0037] Centrifuge assembly 8 includes an annular groove (shown but not labeled in the figure) formed on the fixed base 6. Figure 4As can be seen from the image, a ring-shaped sliding rod is rotatably mounted on the annular slide groove, and a filter cylinder 82 is fixedly mounted between the sliding rods. A turbulence mechanism is mounted on the fixed seat 6, and an actuating component is mounted on the filter chamber 4.

[0038] The turbulence-disrupting mechanism includes an annular groove two formed on a fixed base 6, on which slide blocks evenly distributed in a ring are rotatably mounted. A disc 81 is fixedly mounted between the slide blocks, and guide vanes 87 evenly distributed in a ring are fixedly mounted on the disc 81. Figure 4 As can be seen, multiple guide vanes 87 are inclined, and a drive component is installed between the disc 81 and the filter cylinder 82.

[0039] like Figure 4 As shown, from top to bottom, regulator 2 consists of an adjusting head, a spring, a diaphragm, and a valve core. Before using the device, it can be manually adjusted (e.g., by compressing the pressure regulating spring) to set the precise target pressure value required for the operation of downstream equipment such as fuel cells and hydrogen transmission pipelines. At the same time, when the equipment is running, regulator 2 can sense the pressure fluctuations at the upstream hydrogen storage end and the dynamic changes in the flow rate of downstream hydrogen-using equipment, which cause deviations in the outlet pressure. With the help of the pressure sensing of the diaphragm and the opening adjustment of the valve core, it automatically compensates for the deviations to stabilize the outlet hydrogen pressure at the set value, thereby ensuring the stable operation of downstream equipment and avoiding safety risks such as leakage and equipment damage caused by abnormal pressure. The specific working principle of regulator 2 is a mature existing technology, so it will not be described in further detail here.

[0040] When the device is needed, first connect the air intake pipe (such as the one fixed to the left end of the main body 1 of the device) Figure 2 (As shown in the direction) and in conjunction with the air inlet channel 3, high-pressure hydrogen is input into the filter chamber 4. The high-pressure hydrogen entering the filter chamber 4 will first flow downwards. After being filtered by the filter cylinder 82, it will continue to flow upwards along the inner side of the filter cylinder 82 and the inner side of the fixed seat 6. When the filtered hydrogen flows upwards through the regulator 2, the regulator 2 will reduce the pressure of this part of the hydrogen to the set required pressure value. Then, it will be discharged from the equipment body 1 along the air outlet channel 5 and the air outlet pipe set at the right end of the equipment body 1 (the principle of this part is similar to the principle of pressure reduction of high-pressure hydrogen by the existing high-pressure hydrogen pressure reducing valve).

[0041] At the same time, combined Figure 2 and Figure 5It can be seen that when high-pressure hydrogen flows along the intake channel 3 and is injected into the filter chamber 4 from the lower end of the intake channel 3, the impact force generated by the high-speed flowing hydrogen on the corresponding inclined guide vane 87 can drive the disk 81 to rotate through the guide vane 87. When the disk 81 is subjected to force and drives multiple guide vanes 87 to rotate, the forced guiding force applied to the continuously downward flowing high-pressure hydrogen (that is, the gas originally flows in a straight line, but when it flows through the inclined guide vane 87, it is blocked and pulled by the shape of the guide vane 87) can force the high-pressure hydrogen to flow downward along the inclined angle of the guide vane 87, so that the high-pressure hydrogen changes from the original straight downward movement to a spiral swirling downward movement.

[0042] Because impurities in hydrogen (such as dust and droplets) have a much higher density and greater inertia than gases, some of these impurities can be "thrown" onto the inner wall of the filter chamber 4 by the centrifugal force generated during the downward spiral of the high-pressure hydrogen. This achieves preliminary filtration of the hydrogen and helps reduce the burden on the subsequent filter cartridge 82. At the same time, the impurities filtered by centrifugation can collect at the top of the float plate 85 under their own gravity.

[0043] The disc 81 is sealed and rotatably mounted on the fixed base 6 through the cooperation of multiple sliders and the second arc-shaped sliding groove. At the same time, the filter cylinder 82 is sealed and rotatably mounted on the lower end of the fixed base 6 through the cooperation of multiple sliding rods and the first annular sliding groove. This ensures the airtight connection between the disc 81, the filter cylinder 82 and the fixed base 6, and ensures that all hydrogen entering the filter chamber 4 must be filtered by the filter cylinder 82 before flowing into the upper end of the filter chamber 4, i.e., the regulator 2. This ensures the filtration effect of the device on hydrogen and, to a certain extent, improves the service life of the regulator 2.

[0044] Reference Figures 4-7 The driving component includes a parallel shaft gear 811 fixedly mounted on the filter cylinder 82, a positioning plate fixedly mounted on the fixed base 6, a rotating shaft 89 rotatably mounted through the positioning plate, a rotating gear 810 cooperating with the parallel shaft gear 811 fixedly mounted on the rotating shaft 89, and tooth blocks 88 evenly distributed in a ring fixedly mounted on the lower end of the disc 81.

[0045] The existing high-pressure hydrogen pressure reducing valve with filter has a problem: during the hydrogen filtration and depressurization process, if the size of the impurity particles carried by the flowing hydrogen is close to the pore size of the filter equipment, these impurities are easily embedded inside the filter pores and gradually form a "filter cake layer". At the same time, liquid impurities such as oil mist (such as from compressor lubrication) and adhesive impurities contained in the hydrogen are also easy to adhere to the surface of the filter cartridge 82 and block the filter pores. Therefore, in order to ensure the filtration effect and filtration speed of the existing high-pressure hydrogen pressure reducing valve with filter, it is necessary for the staff to disassemble the pressure reducing valve regularly and clean its internal filter equipment. This method not only increases the workload of the staff, but also requires interrupting the normal operation of the pressure reducing valve and reducing the stability of the pressure reducing valve operation.

[0046] In this invention, when the disk 81 and its multiple toothed blocks 88 are rotated through the above-mentioned operation, the multiple toothed blocks 88 intermittently mesh with the teeth of the rotating gear 810 and apply driving force to it, which can drive the rotating gear 810 and the rotating shaft 89 to rotate together. Through the cooperation between the rotating gear 810 and the parallel shaft gear 811, the parallel shaft gear 811 and the filter cylinder 82 are indirectly driven to rotate together. At this time, the centrifugal force generated by the rotation of the filter cylinder 82 can throw out the impurities adhering to the surface of the filter cylinder 82 and the impurities embedded in the filter holes, thereby achieving the self-cleaning effect of the filter cylinder 82.

[0047] And combined Figure 7 It can be seen that the multiple toothed blocks 88 installed on the disc 81 are in "internal meshing" with the rotating gear 810, and the rotating gear 810 is in "external meshing" with the parallel shaft gear 811. When the disc 81 and the multiple guide vanes 87 rotate and cooperate, driving the high-pressure hydrogen to rotate and flow downward, and causing the high-pressure hydrogen to rotate in the same direction as the disc 81, because the multiple toothed blocks 88 cover the teeth on the rotating gear 810, the disc 81 can make the rotating gear 810 rotate in the same direction as it through the multiple toothed blocks 88. However, since the teeth on the rotating gear 810 and the parallel shaft gear 811 are arranged oppositely, when the rotating gear 810 drives the parallel shaft gear 811 to rotate, it will drive the filter cylinder 82 to run in the opposite direction, that is, the filter cylinder 82 rotates in the opposite direction to the disc 81 and the high-pressure hydrogen.

[0048] When the filter cartridge 82 rotates relative to the high-pressure hydrogen gas rotating on its outer side, a shearing force is generated between them due to the relative motion. This shearing force can further overcome the adhesion force between impurities and the surface of the filter cartridge 82 (such as van der Waals force and electrostatic force), causing the impurities to detach from the surface of the filter cartridge 82. This can help to further improve the automatic cleaning effect of the filter cartridge 82 and improve the stability of the continuous operation of the equipment.

[0049] Furthermore, whether impurities adhering to the surface of filter cartridge 82 can be effectively removed depends crucially on the relative rotational speed between filter cartridge 82 and the high-pressure hydrogen gas flowing around it. A higher relative rotational speed results in stronger shearing force and better removal of impurities from filter cartridge 82. However, excessively high rotational speed of filter cartridge 82 can exacerbate friction between the upper end of filter cartridge 82 and the fixed base 6 (e.g., ...). Figure 6 (As shown in the direction), this accelerates the wear at the bottom of the fixed base 6, thus reducing the sealing between the fixed base 6 and the filter cartridge 82. This allows some unfiltered hydrogen gas to flow directly upwards through the gap between the fixed base 6 and the filter cartridge 82, reducing the equipment's filtration effect on hydrogen. Simultaneously, if the relative rotational speed between the filter cartridge 82 and the high-pressure hydrogen is too high, the turbulence formed between them can easily lead to static electricity generated by friction between hydrogen molecules (hydrogen is a flammable and explosive gas; static sparks may ignite the hydrogen). Therefore, if... Figure 7 As shown, the user needs to make adaptive adjustments to the ratio of the number of teeth on the toothed block 88 on the disc 81 to the number of teeth on the rotating gear 810 and the number of teeth on the parallel shaft gear 811, according to the requirements. For example, by adaptively adjusting the ratio of the number of teeth on the toothed block 88 on the disc 81 to the number of teeth on the rotating gear 810 and the number of teeth on the parallel shaft gear 811, the rotational speed ratio of high-pressure hydrogen to filter cartridge 82 can be adjusted to 1 / 2 (at which point the rotational shearing force of filter cartridge 82 is strong, suitable for coarser impurities) or 1 / 3 (at which point the rotational shearing force of filter cartridge 82 is moderate, suitable for medium impurities).

[0050] Reference Figure 2 , Figure 4 , Figures 8-12 The actuating components include a baffle 7 fixedly installed on the filter chamber 4, two limiting rods 83 fixedly installed on the baffle 7, a float 85 slidably installed between the two limiting rods 83, and the float 85 is slidably installed between the filter chamber 4 and the filter cylinder 82 in a sealed manner. Two return springs 84 are fixedly installed between the float 85 and the baffle 7, and a limiting plate 86 is fixedly installed at the lower end of the filter cylinder 82.

[0051] The cleaning component 9 includes an air collecting cylinder 91 fixedly installed on the fixed base 6. A one-way valve 92 is fixedly installed on the inner wall of the air collecting cylinder 91. Two air blowing pipes 99 are fixedly connected to the air collecting cylinder 91. Two air gathering covers 98 that cooperate with the corresponding air blowing pipes 99 are fixedly installed on the air collecting cylinder 91. An air gathering component is installed on the filter chamber 4.

[0052] The gas-gathering component includes two support blocks 95 fixedly installed on the filter chamber 4. A collection cover 96 is fixedly installed on each of the two support blocks 95. A gas delivery pipe 97 with an arc shape and uniform distribution is fixedly connected to each of the two collection covers 96. One end of each gas delivery pipe 97 is sealed through and fixedly installed on the fixed base 6. Two scrapers 910 are fixedly installed on each of the two gas-gathering covers 98 and the two collection covers 96.

[0053] When the filter cartridge 82 is rotated under force, the multiple scrapers 910 on the two fixed collection covers 96 work together to scrape off the impurities attached to the outer surface of the filter cartridge 82. At the same time, the multiple scrapers 910 on the two fixed gas gathering covers 98 work together to effectively scrape off the impurities attached to the inner surface of the filter cartridge 82. This helps to further improve the automatic cleaning effect of the equipment on the filter cartridge 82, and improve the continuous filtration speed and filtration effect of the filter cartridge 82 on the flowing hydrogen.

[0054] If the filter holes on the filter cylinder 82 become increasingly clogged (e.g., the hydrogen entering the filter chamber 4 carries a large amount of impurities, and the rotation of the filter cylinder 82 alone cannot remove these impurities in time), the hydrogen entering the filter chamber 4 cannot be expelled in time. This leads to an increase in the amount of gas inside the filter chamber 4, i.e., outside the filter cylinder 82 and above the float 85, resulting in increased gas pressure. Furthermore, if the downward pressure exerted by the gas flow on the float 85 exceeds the elastic force of the two return springs 84, the downward pressure from the hydrogen on the float 85 will compress the two return springs 84, driving the float 85 downwards. Figure 2 It can be seen that when the float plate 85 is moved downward by the force and moves to the extension section of the filter chamber 4, the hydrogen gas that has been collected above the float plate 85 will continue to flow downward along the gap between the float plate 85 and the extension section of the filter chamber 4, and finally enter the gas collecting cylinder 91 and be sprayed out through the two blowing pipes 99.

[0055] Furthermore, as hydrogen gas enters the gas collecting cylinder 91 and continues to flow upwards along its inner wall, the entire inner cavity of the gas collecting cylinder 91 contracts, i.e., from bottom to top (as shown in the image). Figure 8 As shown in the direction, the cross-sectional area of ​​the flow gradually decreases. Therefore, according to the principle of fluid continuity, when hydrogen flows upward from the lower end of the gas collecting cylinder 91, the cross-sectional area contacted by the hydrogen flow gradually decreases, and the gas velocity will inevitably gradually increase. This helps to increase the flow velocity of hydrogen blown out by the two blowing pipes 99. Simultaneously, combined with... Figure 11 As can be seen, the blowing ends of both blowing pipes 99 are constricted, which helps to further increase the flow rate of hydrogen gas ejected from the two blowing pipes 99. When the filter cylinder 82 continues to rotate, and the filter holes on it rotate directly opposite the corresponding blowing pipes 99, the high-speed hydrogen gas blown out through the two blowing pipes 99 can not only blow out the impurities clogging the filter holes, achieving one-by-one blowing and cleaning of the clogging filter holes on the filter cylinder 82, but also help to increase the filtration speed of the filter cylinder 82 for this part of the hydrogen gas. This helps to further improve the automatic cleaning effect of the equipment on the filter cylinder 82, that is, to further ensure the continuous filtration speed and filtration effect of the filter cylinder 82 on the flowing hydrogen gas, and to ensure the stability of the continuous operation of the equipment.

[0056] Meanwhile, the two gas-gathering hoods 98 can concentrate the gas blown by the corresponding air-blowing pipes 99, reducing the dispersion of the gas blown by the corresponding air-blowing pipes 99. This can further improve the air-blowing cleaning effect of the high-speed airflow blown out by the two air-blowing pipes 99 on the filter cartridge 82, ensuring the automatic cleaning effect of the equipment on the filter cartridge 82.

[0057] At the same time, combined Figure 11 It can be seen that the hydrogen gas blown out by the two blowing pipes 99, after passing through the filter holes on the filter cylinder 82, will gather in the corresponding collection hood 96 and continue to flow upward along the inner wall of the collection hood 96. Finally, it will enter the inner channel of the fixed seat 6 through the corresponding gas supply pipe 97. After repeating the above operation, the hydrogen gas can be depressurized and discharged. The impurities blown out by the two blowing pipes 99 and falling into the corresponding collection hood 96 will fall above the float plate 85 under their own gravity.

[0058] When the cleaning component 9 and the float plate 85 work together to complete the automatic cleaning of the filter holes on the filter cylinder 82, that is, when the filtration speed of the filter cylinder 82 for the hydrogen entering the filter chamber 4 returns to the initial speed, the pressure inside the filter chamber 4 will also gradually return to the initial state. When the downward pressure generated by the airflow above the float plate 85 is less than the elastic force of the two return springs 84, the float plate 85 can be driven to move upward and reset under the action of the elastic force of the two return springs 84, and the space at the lower end of the float plate 85 can be sealed again.

[0059] Reference Figure 2 , Figure 4 , Figures 8-12 The air collecting cylinder 91 has two grooves, and a compression spring 93 is fixedly installed on each of the two grooves. A movable block is fixedly installed on each of the two compression springs 93, and the two movable blocks are sealed and slidably installed on the corresponding grooves. A sealing plate 94 is fixedly installed between the two movable blocks, and the sealing plate 94 is sealed and slidably installed between the filter cylinder 82 and the air collecting cylinder 91.

[0060] Combination Figure 2 It can be seen that both the upper ends of the float plate 85 and the baffle 7 adopt an arc design. The purpose is that when impurities in the hydrogen gas and impurities automatically cleaned by the filter cartridge 82 fall above the float plate 85, the arc of the upper end of the float plate 85 will facilitate the impurities to collect around the float plate 85. When the float plate 85 moves downward under force into the expansion section of the filter chamber 4, the impurities collected on the float plate 85 will continue to flow downward under its own gravity along the gap between the float plate 85 and the contraction section of the filter chamber 4, and finally collect at the bottom of the filter chamber 4, so that the staff can collect the impurities generated by the automatic cleaning of the equipment in the future.

[0061] Simultaneously, during the process of multiple scrapers 910 on the gas collection hood 98 scraping and cleaning the impurities attached to the inside of the filter cylinder 82, the scraped impurities will fall onto the sealing plate 94 under their own gravity. At the same time, if the hydrogen flow speed outside the filter cylinder 82 is too fast, the impact force generated by the hydrogen passing through the filter holes on the filter cylinder 82 will blow the impurities clogging the filter holes into the inside of the filter cylinder 82. These impurities will also fall onto the sealing plate 94 under their own gravity. As the impurities accumulated on the sealing plate 94 gradually increase, and the sum of the mass of the impurities and the sealing plate 94 exceeds the elastic force of the two compression springs 93, the downward pressure exerted by the impurities on the sealing plate 94 will drive the sealing plate 94 to move downwards (e.g., ...). Figure 8 (As shown in the direction) When the sealing plate 94 moves the impurities on it out of the filter cylinder 82, the impurities collected on the sealing plate 94 will also fall onto the baffle 7 under their own gravity, and fall to the bottom of the filter chamber 4 along the upper arc of the baffle 7. This can help to further improve the convenience of the staff to collect the impurities generated by the automatic cleaning of the equipment.

[0062] To further clarify, the aforementioned fixed connection should be interpreted broadly unless otherwise explicitly specified and limited. For example, it may be welding, gluing, or integral molding, or other conventional methods well known to those skilled in the art.

[0063] Reference Figures 1-12 A method for using a self-cleaning high-pressure hydrogen pressure reducing valve includes the following steps:

[0064] S1: After high-pressure hydrogen enters the filter chamber 4 through the air inlet channel 3, the impact force of the flowing hydrogen on the corresponding guide vanes 87 can drive the disk 81 and multiple guide vanes 87 to rotate. At this time, the guiding force applied to the flowing hydrogen by the turbulence mechanism can drive the high-pressure hydrogen to flow downward in a spiral rotation, and complete the initial filtration of the high-pressure hydrogen in this process, which helps to improve the effect of further filtration of hydrogen by the subsequent filter cartridge 82.

[0065] S2: At the same time, when the disc 81 rotates under force, the disc 81 and the centrifugal assembly 8 work together to drive the filter cartridge 82 to rotate relative to the high-pressure hydrogen and generate shear force. This shear force throws out the impurities attached to the surface of the filter cartridge 82 and the impurities in the filter holes, thereby achieving the self-cleaning effect of the filter cartridge 82, ensuring the continuous filtration effect and filtration efficiency of the filter cartridge 82 on hydrogen, and ensuring the stability of the equipment operation.

[0066] S3: The hydrogen gas filtered by the filter cartridge 82 will continue to flow upward along the connecting channel between the inner side of the filter cartridge 82 and the inner side of the fixed base 6, and after being depressurized by the regulator 2, it will be discharged from the device through the gas outlet channel 5.

[0067] S4: If the filter cartridge 82 becomes more clogged, the cleaning component 9, in conjunction with the two air blowing pipes 99, can clean the filter holes on the filter cartridge 82 one by one from the inside of the filter cartridge 82. This can help to further improve the cleaning effect of the equipment on the filter cartridge 82, further ensure the continuous filtration effect and speed of the hydrogen flowing through the filter cartridge 82, and help to further improve the stability of the equipment operation.

[0068] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A self-cleaning high-pressure hydrogen pressure reducing valve comprising a device main body (1), characterized in that, The device body (1) is provided with a filtering cavity (4), a fixed seat (6) is fixedly installed on the filtering cavity (4), a centrifugal assembly (8) is arranged on the fixed seat (6), and a cleaning assembly (9) is arranged on the fixed seat (6); The centrifugal assembly (8) comprises an annular sliding groove one formed in the fixed seat (6), a plurality of sliding rods in annular uniform distribution are rotatably installed on the annular sliding groove one, and a filter cartridge (82) is fixedly and jointly installed between the sliding rods; a flow disturbing mechanism is installed on the fixed seat (6), and an actuating component is installed on the filtering cavity (4); The flow disturbing mechanism comprises an annular sliding groove two formed in the fixed seat (6), a plurality of sliding blocks in annular uniform distribution are rotatably installed on the annular sliding groove two, and a disc (81) is fixedly and jointly installed between the sliding blocks; a plurality of guide vanes (87) in annular uniform distribution are fixedly installed on the disc (81), and a driving component is jointly installed between the disc (81) and the filter cartridge (82); The driving component comprises a parallel shaft gear (811) fixedly installed on the filter cartridge (82), a positioning plate is fixedly installed on the fixed seat (6), a rotating shaft (89) is rotatably installed through the positioning plate, a rotating gear (810) matched with the parallel shaft gear (811) is fixedly installed on the rotating shaft (89), and a plurality of tooth blocks (88) in annular uniform distribution are fixedly installed at the lower end of the disc (81); The actuating component comprises a baffle (7) fixedly installed on the filtering cavity (4), two limiting rods (83) are fixedly installed on the baffle (7), a floating plate (85) is slidingly installed between the two limiting rods (83), the floating plate (85) is sealingly and slidingly installed between the filtering cavity (4) and the filter cartridge (82), two return springs (84) are fixedly and jointly installed between the floating plate (85) and the baffle (7), and a limiting plate (86) is fixedly installed at the lower end of the filter cartridge (82); The cleaning assembly (9) comprises a gas collecting cylinder (91) fixedly installed on the fixed seat (6), a one-way valve (92) is fixedly installed on the inner wall of the gas collecting cylinder (91), two air blowing pipes (99) are fixedly and communicatively arranged on the gas collecting cylinder (91), two gas collecting covers (98) matched with the corresponding air blowing pipes (99) are fixedly installed on the gas collecting cylinder (91), and a gas collecting component is installed on the filtering cavity (4); The gas collecting component comprises two supporting blocks (95) fixedly installed on the filtering cavity (4), a collecting cover (96) is fixedly installed on each of the two supporting blocks (95), a plurality of gas conveying pipes (97) in arc uniform distribution are fixedly and communicatively arranged on each of the two collecting covers (96), one end of each of the gas conveying pipes (97) is sealingly and fixedly installed on the fixed seat (6), and two scraper plates (910) are fixedly installed on each of the two gas collecting covers (98) and the two collecting covers (96). When the filter hole on the filter cartridge (82) is blocked, the hydrogen entering the inside of the filter cavity (4) cannot be discharged in time, causing the amount of gas inside the filter cavity (4), that is, outside the filter cartridge (82), above the floating plate (85) to increase, the gas pressure to increase, and the downward pressure of the gas flow on the floating plate (85) to be greater than the elastic force of the two reset springs (84). When the downward pressure of the hydrogen on the floating plate (85) is greater than the elastic force of the two reset springs (84), the downward pressure of the hydrogen on the floating plate (85) will compress the two reset springs (84) through the floating plate (85), driving the floating plate (85) to move downward. When the floating plate (85) moves downward under the force, moves to the expansion section of the filter cavity (4), and part of the hydrogen collected above the floating plate (85) will continue to flow downward along the gap between the floating plate (85) and the expansion section of the filter cavity (4), and finally enter the inside of the gas collecting cylinder (91) and be sprayed out through the two gas blowing pipes (99).

2. The self-cleaning high-pressure hydrogen pressure reducing valve according to claim 1, characterized by, Two recesses are formed in the gas collecting cylinder (91), and two compression springs (93) are fixedly installed in the two recesses. Two moving blocks are fixedly installed on the two compression springs (93), and the two moving blocks are sealingly and slidingly installed in the corresponding recesses. A sealing plate (94) is fixedly installed between the two moving blocks, and the sealing plate (94) is sealingly and slidingly installed between the filter cartridge (82) and the gas collecting cylinder (91).

3. The self-cleaning high-pressure hydrogen pressure reducing valve according to claim 2, characterized by An air inlet channel (3) is formed in the equipment body (1) and communicates with the filter cavity (4). An air outlet channel (5) is formed in the equipment body (1) and communicates with the filter cavity (4). The filter cavity (4) and the fixing seat (6) are jointly installed with an adjuster (2).

4. A method of using a self-cleaning high-pressure hydrogen pressure reducing valve, using the self-cleaning high-pressure hydrogen pressure reducing valve according to claim 3, characterized by, The steps include: S1: After the high-pressure hydrogen gas is input into the inside of the filter cavity (4) through the air inlet channel (3), the impact force of the flowing hydrogen gas on the corresponding guide vane (87) can drive the disc (81) and the plurality of guide vanes (87) to rotate. At this time, the guide force applied to the flowing hydrogen gas by the flow disturbance mechanism can drive the high-pressure hydrogen gas to flow downward in a spiral rotating manner, and in this process, the high-pressure hydrogen gas is preliminarily filtered, which helps to improve the further filtering effect of the subsequent filter cartridge (82) on the hydrogen gas; S2: At the same time, when the disc (81) rotates under the force, the disc (81) and the centrifugal assembly (8) are matched to drive the filter cartridge (82) to rotate relative to the high-pressure hydrogen gas to generate a shearing force, and the shearing force can throw out the impurities attached to the surface of the filter cartridge (82) and the impurities in the filter holes thereon, so as to realize the self-cleaning effect of the filter cartridge (82), ensure the filtering effect and filtering efficiency of the filter cartridge (82) on the hydrogen gas, and ensure the stability of the equipment operation; S3: The hydrogen gas filtered by the filter cartridge (82) will continue to flow upward along the connecting channel between the inside of the filter cartridge (82) and the inside of the fixing seat (6), and after being depressurized by the adjuster (2), it will be discharged from the equipment through the air outlet channel (5). S4: if the filter cartridge (82) is blocked, at this time, through the cooperation of the cleaning assembly (9) and the two blowing pipes (99), the blowing and cleaning of the filter holes on the filter cartridge (82) from the inside of the filter cartridge (82) can help to further improve the cleaning effect of the equipment on the filter cartridge (82), further ensure the filtering effect and speed of the filter cartridge (82) on the hydrogen flowing through, and help to further improve the stability of the operation of the equipment.

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