Overload protection device of hydrogen fuel cell power generation system

Abstract

The invention relates to the technical field of fuel cells, and discloses a hydrogen fuel cell power generation system overload protection device which comprises a shell, a box body is fixedly connected to the rear side of the shell, a protection mechanism is arranged on the inner side of the box body and comprises electrode plates, and the two electrode plates are fixedly connected to the left end and the right end of the interior of the shell respectively. The left side and the right side of the interior of the shell are fixedly connected with microporous layers, the middle of the inner side of the shell is fixedly connected with a plurality of catalyst layers at equal intervals, the inner side of the box body is slidably connected with a movable plate, the left side and the right side of the front wall of the movable plate are fixedly connected with protective insertion plates, and the front ends of the two protective insertion plates sequentially penetrate through the box body and the shell. The push plate is driven by the support column to rotate, the movable column pushes the support plate to move forwards through the groove, and then the movable plate drives the protection insertion plate to move forwards, so that the protection insertion plate is inserted among a plurality of catalyst layers, proton transfer is isolated, and power generation work of the hydrogen fuel cell is stopped immediately.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and specifically to an overload protection device for a hydrogen fuel cell power generation system. Background Art

[0002] A hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. Its working principle is based on an electrochemical reaction. Hydrogen is decomposed into hydrogen ions and electrons by a catalyst at the anode. The electrons form an electric current through an external circuit, and the hydrogen ions pass through the electrolyte membrane to reach the cathode and combine with oxygen to form water.

[0003] Hydrogen fuel cells have the advantages of high efficiency, cleanliness, and zero emissions, and are increasingly widely used in the fields of automobiles, distributed power generation, and aerospace. During the operation of a hydrogen fuel cell power generation system, it will face various complex working conditions and uncertain factors, such as sudden increases in load and circuit failures, which may lead to system overload. At this time, an overload protection device is required to provide protection for the hydrogen fuel cell.

[0004] Currently, the hydrogen fuel cells on the market mainly consist of a housing, a bipolar electrode, a catalytic layer, and a gas diffusion layer. When in use, hydrogen and oxygen are respectively connected to the positive and negative electrodes. The hydrogen and oxygen can evenly diffuse into the catalytic layer through the gas diffusion layer. Hydrogen will react with the catalytic layer to generate protons and electrons. The protons react with oxygen to form water, and the electrons can complete power transmission through an external circuit. However, when this device is overloaded, an electric arc will be generated inside, causing equipment damage or even explosion. To solve the above problems, the prior art directly disconnects the external circuit when detecting an overload situation, and stops the internal reaction of the hydrogen fuel cell by blocking the electron circulation. Although this method can quickly prevent the damage of the overload to the battery, it will cause the entire power generation system to stop working instantly, and it takes a certain amount of time to restart and return to the normal operating state. The prior art uses a control valve added at the hydrogen inlet end to stop supplying hydrogen to the inside of the hydrogen fuel cell when an overload occurs, so as to achieve overload protection. However, when this device is overloaded, the hydrogen that has already entered the inside of the hydrogen fuel cell will continue to react to generate an electric arc, causing the breakdown of the catalytic layer and reducing the service life of this device, which cannot meet the needs of users. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an overload protection device for a hydrogen fuel cell power generation system, which solves the problem that the residual hydrogen inside the hydrogen fuel cell will still participate in the chemical reaction after the overload protection device is started.

[0006] To achieve the above object, the present invention is realized through the following technical solutions: An overload protection device for a hydrogen fuel cell power generation system includes a housing. A box body is fixedly connected to the rear side of the housing. A protection mechanism is arranged inside the box body, and the protection mechanism is used to facilitate providing overload protection for the hydrogen fuel cell. A control mechanism is arranged on the left side of the housing, and the control mechanism is used to facilitate controlling the power of the hydrogen fuel cell. A filtering mechanism is arranged on the right side of the housing, and the filtering mechanism is used to facilitate filtering the air entering the device;

[0007] The protection mechanism includes electrode plates. The two electrode plates are respectively fixedly connected to the left and right ends inside the housing. Microporous layers are fixedly connected to the left and right sides inside the housing. A plurality of catalytic layers are fixedly connected to the middle part inside the housing at equal intervals. A movable plate is slidably connected to the inside of the box body. Protection insertion plates are fixedly connected to the left and right sides of the front wall of the movable plate. The front ends of the two protection insertion plates sequentially penetrate through the box body and the housing. A moving component is arranged at the rear side of the movable plate.

[0008] Preferably, the control mechanism includes a hydrogen delivery pipe. The hydrogen delivery pipe is connected to the middle part on the left side of the housing. The right end of the hydrogen delivery pipe sequentially penetrates through the housing and the left electrode plate. A hollow block is fixedly connected to the top of the hydrogen delivery pipe. A hollow pipe is rotatably connected to the bottom end inside the hollow block. The bottom end of the hollow pipe sequentially penetrates through the hollow block and the hydrogen delivery pipe and is fixedly connected to a first valve body. A rotating rod is rotatably connected to the top end inside the hollow block. The bottom end of the rotating rod penetrates through the hollow pipe and is fixedly connected to a second valve body. Support discs are fixedly connected to the outer sides of the top ends of the hollow pipe and the rotating rod. A rotating shaft is fixedly connected to the adjacent side of the two support discs. A rotating component is arranged inside the hollow block.

[0009] Preferably, the filtering mechanism includes an air delivery pipe. The air delivery pipe is connected to the right side of the housing. The left end of the air delivery pipe sequentially penetrates through the housing and the right electrode plate. A filter screen is fixedly connected to the middle part inside the air delivery pipe. A transmission rod is rotatably connected to the right side of the filter screen. An impeller is fixedly connected to the right end of the transmission rod. A scraping plate is fixedly connected to the left side of the outer wall of the transmission rod. A collection component is arranged at the bottom of the air delivery pipe.

[0010] Preferably, the moving component includes a support plate. The support plate is fixedly connected to the rear side of the movable plate. A groove is formed on the outer side of the support plate. A movable column is slidably connected to the inside of the groove. A motor is fixedly connected to the bottom of the rear side of the right wall of the box body. The output end of the motor penetrates through the box body and is fixedly connected to a support column. Push plates are fixedly connected to the left and right ends of the outer side of the support column. The top parts of the adjacent sides of the two push plates are respectively rotatably connected to the left and right ends of the movable column.

[0011] Preferably, the rotating assembly includes a motor which is fixedly connected to the right side of the hollow block. The output end of the motor penetrates through the hollow block and is fixedly connected to a threaded rod. A slider is threadedly connected to the outer side of the threaded rod. The front and rear ends of the left side of the slider are both fixedly connected with support blocks. The left sides of the two support blocks are both rotatably connected with connecting rods. The left ends of the two connecting rods are respectively rotatably connected to the corresponding rotating shafts.

[0012] Preferably, the collection assembly includes a collection groove which is opened at the bottom of the air delivery pipe. A collection box is fixedly connected to the middle part of the outer side of the air delivery pipe.

[0013] Preferably, the control mechanism further includes a box door which is arranged at the lower right middle part of the collection box. The upper and lower sides of the front end of the right wall of the box door are both fixedly connected with hinges. The box door is rotatably connected to the collection box through the hinges.

[0014] Preferably, the control mechanism further includes a connection port which communicates with the right end of the air delivery pipe. The inner size of the air delivery pipe matches the size of the filter screen.

[0015] Preferably, the control mechanism further includes sliding grooves which are respectively opened at the front and rear sides inside the hollow block. The front and rear sides of the slider are respectively slidably connected to the corresponding sliding grooves.

[0016] Preferably, the left and right sides of the top of the outer shell are both communicated with air outlets. Connection threads are arranged at the top of the outer sides of the two air outlets.

[0017] The present invention provides an overload protection device for a hydrogen fuel cell power generation system. It has the following

[0018] Beneficial effects:

[0019] 1. By driving the support column to rotate through the motor, the push plate is driven to rotate, the movable column will move accordingly, and through the groove, the support plate can be pushed forward. The movable plate will drive the protection plug to move forward, so as to insert between multiple catalytic layers, isolate the proton transfer, immediately stop the power generation work of the hydrogen fuel cell, prevent the hydrogen fuel cell from being damaged due to overload, improve the service life of the device, and meet the needs of users.

[0020] 2. In the present invention, the motor drives the threaded rod to rotate, the slider drives the two support blocks to move synchronously, and the support blocks can push the rotating shaft to move through the connecting rod, thereby driving the support disk to rotate. The two support disks drive the hollow tube and the rotating rod to rotate relatively respectively, thereby driving the first valve body and the second valve body to rotate. By controlling the angle between the first valve body and the second valve body, the flow rate of hydrogen entering the device can be conveniently controlled, thereby controlling the power generation of the hydrogen fuel cell and improving the convenience of using the device.

[0021] 3. In the present invention, air can be conveyed to the device through the air conveying pipe. The filter screen filters the air entering the device, impurities accumulate on the filter screen, and the air impacts the impeller when passing through the air conveying pipe, causing the impeller to start rotating. Thereby, the scraper is driven to rotate through the transmission rod, and the impurities accumulated on the filter screen are scraped out from the collection groove, so that the impurities fall into the collection box, ensuring that the filter screen will not be blocked due to the accumulation of impurities and improving the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a perspective view of the present invention;

[0023] Figure 2 is a front view of the present invention;

[0024] Figure 3 is a partial structural cross-sectional view of the protection mechanism of the present invention;

[0025] Figure 4 is a partial structural exploded view of the protection mechanism of the present invention;

[0026] Figure 5 is a cross-sectional view of the hollow block structure of the present invention;

[0027] Figure 6 is a partial structural exploded view of the control mechanism of the present invention;

[0028] Figure 7 is a partial structural schematic diagram of the filtering mechanism of the present invention;

[0029] Figure 8 is a partial structural cross-sectional view of the filtering mechanism of the present invention.

[0030] Among them, 1. Outer shell; 2. Protection mechanism; 201. Electrode plate; 202. Microporous layer; 203. Catalytic layer; 204. Movable plate; 205. Protection plug plate; 206. Support plate; 207. Groove; 208. Movable column; 209. Motor; 210. Support column; 211. Push plate; 3. Control mechanism; 301. Hydrogen delivery pipe; 302. Hollow block; 303. Hollow pipe; 304. First valve body; 305. Second valve body; 306. Support disc; 307. Rotating shaft; 308. Motor; 309. Threaded rod; 310. Slide block; 311. Support block; 312. Connecting rod; 313. Slide groove; 314. Rotating rod; 4. Filtering mechanism; 401. Air delivery pipe; 402. Filter screen; 403. Transmission rod; 404. Scraper; 405. Impeller; 406. Collection tank; 407. Collection box; 408. Box door; 409. Hinge; 410. Connection port; 5. Box body; 6. Air outlet; 7. Connecting thread. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Refer to Figure 1 、 Figure 3 and Figure 4 As shown in, an overload protection device for a hydrogen fuel cell power generation system according to an embodiment of the present invention includes an outer shell 1. A box body 5 is fixedly connected to the rear side of the outer shell 1. A protection mechanism 2 is arranged inside the box body 5. The protection mechanism 2 is used to facilitate the provision of overload protection for the hydrogen fuel cell. A control mechanism 3 is arranged on the left side of the outer shell 1. The control mechanism 3 is used to facilitate the control of the power of the hydrogen fuel cell. A filtering mechanism 4 is arranged on the right side of the outer shell 1. The filtering mechanism 4 is used to facilitate the filtering of the air entering the device.

[0033] The protection mechanism 2 includes electrode plates 201. The two electrode plates 201 are respectively fixedly connected to the left and right ends inside the housing 1. Microporous layers 202 are fixedly connected to both the left and right sides inside the housing 1. The microporous layers 202 can disperse oxygen and hydrogen. A plurality of catalytic layers 203 are equidistantly and fixedly connected to the middle part inside the housing 1. A movable plate 204 is slidably connected to the inside of the box body 5. The movable plate 204 can slide inside the box body 5. Protection insertion plates 205 are fixedly connected to both the left and right sides of the front wall of the movable plate 204. The front ends of the two protection insertion plates 205 sequentially penetrate through the box body 5 and the housing 1. The movable plate 204 drives the protection insertion plates 205 to insert between the plurality of catalytic layers 203. A moving component is arranged at the rear side of the movable plate 204. The moving component includes a support plate 206. The support plate 206 is fixedly connected to the rear side of the movable plate 204. A groove 207 is formed on the outer side of the support plate 206. A movable column 208 is slidably connected to the inside of the groove 207. The movable column 208 can push the support plate 206 to move through the groove 207. A motor 209 is fixedly connected to the bottom of the rear side of the right wall of the box body 5. The output end of the motor 209 penetrates through the box body 5 and is fixedly connected to a support column 210. The motor 209 drives the support column 210 to rotate. Push plates 211 are fixedly connected to both the left and right ends of the outer side of the support column 210. The top parts of the adjacent sides of the two push plates 211 are respectively rotatably connected to the left and right ends of the movable column 208. When the support column 210 rotates, the movable column 208 can be pushed through the push plates 211;

[0034] Specifically, during the use of the hydrogen fuel cell, when the hydrogen fuel cell is overloaded, the motor 209 starts and drives the support column 210 to start rotating. As the support column 210 rotates, it further drives the push plates 211 to start rotating. During the rotation of the push plates 211, the movable column 208 is pushed to move. During the movement of the movable column 208, the support plate 206 can be pushed forward through the groove 207, driving the movable plate 204 to move forward, and then driving the protection insertion plates 205 to move forward. The protection insertion plates 205 will be inserted between the plurality of catalytic layers 203, isolating the proton transfer path, thus immediately stopping the power generation work of the hydrogen fuel cell, protecting the hydrogen fuel cell from being damaged due to overload, increasing the service life of the device, and meeting the needs of users.

[0035] Refer to Figure 2 、 Figure 5 and Figure 6, the control mechanism 3 includes a hydrogen delivery pipe 301. The hydrogen delivery pipe 301 is connected to the middle of the left side of the housing 1. The right end of the hydrogen delivery pipe 301 sequentially penetrates through the housing 1 and the left electrode plate 201. Hydrogen can enter the device through the hydrogen delivery pipe 301. A hollow block 302 is fixedly connected to the top of the hydrogen delivery pipe 301. A hollow pipe 303 is rotatably connected to the bottom end inside the hollow block 302. The bottom end of the hollow pipe 303 sequentially penetrates through the hollow block 302 and the hydrogen delivery pipe 301 and is fixedly connected to a first valve body 304. The hollow pipe 303 can drive the first valve body 304 to rotate. A rotating rod 314 is rotatably connected to the top end inside the hollow block 302. The bottom end of the rotating rod 314 penetrates through the hollow pipe 303 and is fixedly connected to a second valve body 305. The rotating rod 314 will drive the second valve body 305 to rotate. Support disks 306 are fixedly connected to the outer top ends of the hollow pipe 303 and the rotating rod 314 respectively. The two support disks 306 will drive the hollow pipe 303 and the rotating rod 314 to rotate relative to each other respectively. Rotating shafts 307 are fixedly connected to the adjacent sides of the two support disks 306. A rotating assembly is arranged inside the hollow block 302. The rotating assembly includes a motor 308. The motor 308 is fixedly connected to the right side of the hollow block 302. The output end of the motor 308 penetrates through the hollow block 302 and is fixedly connected to a threaded rod 309. The motor 308 will drive the threaded rod 309 to rotate. A slider 310 is threadedly connected to the outer side of the threaded rod 309. Support blocks 311 are fixedly connected to the front and rear ends on the left side of the slider 310. When the threaded rod 309 rotates, the slider 310 will drive the support blocks 311 to move. Connecting rods 312 are rotatably connected to the left sides of the two support blocks 311 respectively. The left ends of the two connecting rods 312 are respectively rotatably connected to the corresponding rotating shafts 307. The support blocks 311 can drive the rotating shafts 307 to move through the connecting rods 312;

[0036] Specifically, when it is necessary to adjust the power generation power of the hydrogen fuel cell, when the motor 308 starts to work, it will drive the threaded rod 309 to rotate. As the threaded rod 309 rotates, the slider 310 will move along the threaded rod 309. The slider 310 will drive the two support blocks 311 to move synchronously. The movement of the support blocks 311 is transmitted to the rotating shaft 307 through the connecting rod 312, causing the rotating shaft 307 to move. The displacement of the rotating shaft 307 will cause the support disk 306 to start rotating. At this time, the two support disks 306 will drive the hollow pipe 303 and the rotating rod 314 to rotate in opposite directions respectively. The hollow pipe 303 and the rotating rod 314 will further drive the first valve body 304 and the second valve body 305 to rotate. By precisely adjusting the angle between the first valve body 304 and the second valve body 305, the fine control of the hydrogen flow rate can be realized, and then the power generation power of the hydrogen fuel cell can be adjusted, improving the convenience of using the device.

[0037] Refer to Figure 1 、 Figure 7 and Figure 8, the filtering mechanism 4 includes an air delivery pipe 401. The air delivery pipe 401 is connected to the right side of the housing 1. The left end of the air delivery pipe 401 sequentially penetrates through the housing 1 and the right electrode plate 201. Through the air delivery pipe 401, air can enter the device. In the middle of the inner side of the air delivery pipe 401, a filter screen 402 is fixedly connected. The filter screen 402 can filter the air entering the device. On the right side of the filter screen 402, a transmission rod 403 is rotatably connected. The right end of the transmission rod 403 is fixedly connected with an impeller 405. On the left side of the outer wall of the transmission rod 403, a scraping plate 404 is fixedly connected. When the impeller 405 rotates, the scraping plate 404 can be driven to rotate through the transmission rod 403. At the bottom of the air delivery pipe 401, a collection assembly is provided. The collection assembly includes a collection trough 406. The collection trough 406 is opened at the bottom of the air delivery pipe 401. In the middle of the outer side of the air delivery pipe 401, a collection box 407 is fixedly connected. The collection box 407 can collect impurities;

[0038] Specifically, when using the device, air can be delivered into the device through the air delivery pipe 401. The filter screen 402 can filter the air entering the device. Impurities will be intercepted by the filter screen 402 and gradually accumulate on its surface. And when air passes through the air delivery pipe 401, it will impact the impeller 405, causing the impeller 405 to start rotating. The impeller 405 can drive the scraping plate 404 to rotate synchronously through the transmission rod 403. As the scraping plate 404 rotates, the impurities accumulated on the filter screen 402 can be scraped out from the collection trough 406, so that the impurities fall into the collection box 407, ensuring that the filter screen 402 can continuously remain clean, avoiding the blockage phenomenon caused by the accumulation of impurities, and improving the practicability of the device.

[0039] Refer to Figure 1 、 Figure 7 and Figure 8 , the control mechanism 3 further includes a box door 408. The box door 408 is arranged at the lower right middle part of the collection box 407. On the upper and lower sides of the front end of the right wall of the box door 408, hinge joints 409 are fixedly connected. Through the hinge joints 409, the box door 408 can be conveniently opened. The box door 408 is rotatably connected to the collection box 407 through the hinge joints 409. The control mechanism 3 further includes a connection port 410. The connection port 410 is connected to the right end of the air delivery pipe 401. The connection port 410 facilitates the connection of the air delivery pipe 401 to external equipment. The inner size of the air delivery pipe 401 matches the size of the filter screen 402;

[0040] Specifically, through the hinge joints 409, the box door 408 can be conveniently opened, so as to clean the impurities in the collection box 407. Using the connection port 410 can connect the air delivery pipe 401 to external equipment. The inner size of the air delivery pipe 401 matches the size of the filter screen 402, so that there will be no gap between the filter screen 402 and the air delivery pipe 401.

[0041] Referring to Figure 1 、 Figure 2 and Figure 5 Figure 5 , the control mechanism 3 further includes sliding grooves 313 which are respectively arranged on the front and rear sides inside the hollow block 302. The front and rear sides of the slider 310 are respectively slidably connected to the corresponding sliding grooves 313. The sliding grooves 313 can limit the movement of the slider 310. Air outlets 6 are communicated with both the left and right sides of the top of the outer shell 1. The air outlets 6 facilitate the discharge of the reacted gas. Connecting threads 7 are arranged on the outer tops of both the air outlets 6;

[0042] Specifically, the sliding grooves 313 can limit the movement of the slider 310, so that when the threaded rod 309 rotates, the slider 310 can move. And the air outlets 6 facilitate the discharge of the reacted gas from the device. The connecting threads 7 can facilitate the connection of the air outlets 6 with external exhaust devices.

[0043] Working principle: During the use of the hydrogen fuel cell, when the hydrogen fuel cell is overloaded, the motor 209 will start and drive the support column 210 to rotate. The support column 210 will drive the push plate 211 to rotate. The push plate 211 will drive the movable column 208 to move. When the movable column 208 moves, it can push the support plate 206 forward through the groove 207. The movable plate 204 will then drive the protective plug plate 205 to move forward, so as to insert between multiple catalytic layers 203, isolate the proton transfer, and immediately stop the power generation work of the hydrogen fuel cell, so that the hydrogen fuel cell will not be damaged due to overload;

[0044] When it is necessary to adjust the power generation power of the hydrogen fuel cell, the motor 308 will drive the threaded rod 309 to rotate. When the threaded rod 309 rotates, the slider 310 will move along the threaded rod 309 and drive the two support blocks 311 to move synchronously. When the support blocks 311 move, they can push the rotating shaft 307 to move through the connecting rod 312. When the rotating shaft 307 moves, it will drive the support disk 306 to rotate. At this time, the two support disks 306 will respectively drive the hollow tube 303 and the rotating rod 314 to rotate relatively. The hollow tube 303 and the rotating rod 314 will respectively drive the first valve body 304 and the second valve body 305 to rotate. By controlling the included angle between the first valve body 304 and the second valve body 305, the flow rate of hydrogen entering the device can be conveniently controlled, so as to control the power generation power of the hydrogen fuel cell;

[0045] When using this device, air can be transported into the interior of the device through the air delivery pipe 401. During this process, the filter screen 402 can filter the air entering the device, and impurities will accumulate on the filter screen 402. Moreover, when the air passes through the air delivery pipe 401, it will impact the impeller 405, causing the impeller 405 to start rotating. When the impeller 405 rotates, it can drive the scraper 404 to rotate through the transmission rod 403, thereby scraping the impurities accumulated on the filter screen 402 out from the collection trough 406, making the impurities fall into the collection box 407, so that the filter screen 402 will not be blocked due to the accumulation of impurities.

[0046] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An overload protection device for a hydrogen fuel cell power generation system, comprising a housing (1), characterized in that, A box body (5) is fixedly connected to the rear side of the housing (1). A protection mechanism (2) is arranged inside the box body (5), and the protection mechanism (2) is used to facilitate overload protection for the hydrogen fuel cell. A control mechanism (3) is arranged on the left side of the housing (1), and the control mechanism (3) is used to facilitate the control of the power of the hydrogen fuel cell. A filtering mechanism (4) is arranged on the right side of the housing (1), and the filtering mechanism (4) is used to facilitate the filtering of the air entering the device; The protection mechanism (2) includes electrode plates (201). The two electrode plates (201) are respectively fixedly connected to the left and right ends inside the housing (1). Microporous layers (202) are fixedly connected to both the left and right sides inside the housing (1). A plurality of catalytic layers (203) are fixedly connected to the middle part inside the housing (1) at equal intervals. A movable plate (204) is slidably connected to the inside of the box body (5). Protection plugs (205) are fixedly connected to the left and right sides of the front wall of the movable plate (204). The front ends of the two protection plugs (205) sequentially penetrate through the box body (5) and the housing (1). A moving component is arranged on the rear side of the movable plate (204).

2. The overload protection device for a hydrogen fuel cell power generation system according to claim 1, characterized in that, The control mechanism (3) includes a hydrogen delivery pipe (301). The hydrogen delivery pipe (301) is connected to the middle part on the left side of the housing (1). The right end of the hydrogen delivery pipe (301) sequentially penetrates through the housing (1) and the left electrode plate (201). A hollow block (302) is fixedly connected to the top of the hydrogen delivery pipe (301). A hollow pipe (303) is rotatably connected to the bottom end inside the hollow block (302). The bottom end of the hollow pipe (303) sequentially penetrates through the hollow block (302) and the hydrogen delivery pipe (301) and is fixedly connected to a first valve body (304). A rotating rod (314) is rotatably connected to the top end inside the hollow block (302). The bottom end of the rotating rod (314) penetrates through the hollow pipe (303) and is fixedly connected to a second valve body (305). Support disks (306) are fixedly connected to the outer sides of the top ends of the hollow pipe (303) and the rotating rod (314). A rotating shaft (307) is fixedly connected to the adjacent side of the two support disks (306). A rotating component is arranged inside the hollow block (302).

3. An overload protection device for a hydrogen fuel cell power generation system according to claim 1, characterized in that, The filtering mechanism (4) includes an air delivery pipe (401). The air delivery pipe (401) is connected to the right side of the housing (1). The left end of the air delivery pipe (401) sequentially penetrates through the housing (1) and the right electrode plate (201). A filter screen (402) is fixedly connected to the middle part inside the air delivery pipe (401). A transmission rod (403) is rotatably connected to the right side of the filter screen (402). An impeller (405) is fixedly connected to the right end of the transmission rod (403). A scraper (404) is fixedly connected to the left side of the outer wall of the transmission rod (403). A collection component is arranged at the bottom of the air delivery pipe (401).

4. An overload protection device for a hydrogen fuel cell power generation system according to claim 1, characterized in that, The moving component includes a support plate (206), the support plate (206) is fixedly connected to the rear side of the movable plate (204), a groove (207) is formed on the outer side of the support plate (206), a movable column (208) is slidably connected to the inner side of the groove (207), a motor (209) is fixedly connected to the bottom of the rear side of the right wall of the box body (5), the output end of the motor (209) penetrates through the box body (5) and is fixedly connected to a support column (210), push plates (211) are fixedly connected to the left and right ends of the outer side of the support column (210), and the top parts of the adjacent sides of the two push plates (211) are respectively rotatably connected to the left and right ends of the movable column (208).

5. An overload protection device for a hydrogen fuel cell power generation system according to claim 2, characterized in that, The rotating component includes a motor (308), the motor (308) is fixedly connected to the right side of the hollow block (302), the output end of the motor (308) penetrates through the hollow block (302) and is fixedly connected to a threaded rod (309), a slider (310) is threadedly connected to the outer side of the threaded rod (309), support blocks (311) are fixedly connected to the front and rear ends of the left side of the slider (310), connecting rods (312) are rotatably connected to the left sides of the two support blocks (311), and the left ends of the two connecting rods (312) are respectively rotatably connected to the corresponding rotating shafts (307).

6. The overload protection device for a hydrogen fuel cell power generation system according to claim 3, characterized in that, The collecting component includes a collecting groove (406), the collecting groove (406) is formed at the bottom of the air delivery pipe (401), and a collecting box (407) is fixedly connected to the middle part of the outer side of the air delivery pipe (401).

7. An overload protection device for a hydrogen fuel cell power generation system according to claim 6, characterized in that, The control mechanism (3) further includes a box door (408), the box door (408) is arranged at the lower middle part of the right side of the collecting box (407), hinges (409) are fixedly connected to the upper and lower sides of the front end of the right wall of the box door (408), and the box door (408) is rotatably connected to the collecting box (407) through the hinges (409).

8. An overload protection device for a hydrogen fuel cell power generation system according to claim 1, characterized in that, The control mechanism (3) further includes a connection port (410), the connection port (410) communicates with the right end of the air delivery pipe (401), and the inner size of the air delivery pipe (401) matches the size of the filter screen (402).

9. The overload protection device for a hydrogen fuel cell power generation system according to claim 5, characterized in that, The control mechanism (3) further includes sliding grooves (313), the two sliding grooves (313) are respectively formed at the front and rear sides inside the hollow block (302), and the front and rear sides of the slider (310) are respectively slidably connected to the corresponding sliding grooves (313).

10. The overload protection device for a hydrogen fuel cell power generation system according to claim 1, characterized in that, Air outlet ports (6) are respectively communicated with the left and right sides of the top of the outer shell (1), and connection threads (7) are arranged at the top parts of the outer sides of the two air outlet ports (6).

Images