Hydrogen leakage monitoring equipment for hydrogen production station

Abstract

The invention relates to the technical field of hydrogen processing, in particular to hydrogen leakage monitoring equipment for a hydrogen production station, which comprises a fixing frame, a rotating ring, a motor and the like, the fixing frame is rotationally connected with a rotating ring; a motor is mounted in the fixing frame; the motor and the rotating ring transmit power through gear engagement. The flange plate is attached through the attaching roller, the hydrogen detection adhesive tape is flatly attached to the surface of the flange plate, wrinkles of the hydrogen detection adhesive tape are avoided, the safety of winding the hydrogen detection adhesive tape through the attaching roller is high, the risk of poisoning during manual treatment is reduced, and the fixing frame is fixed to the gas conveying pipe through the pressing plate, so that the production efficiency is improved. The hydrogen detection adhesive tape is wound on the flange plate, so that the hydrogen detection adhesive tape is prevented from shaking during winding, and the phenomenon of deflection during manual winding of the hydrogen detection adhesive tape is avoided; the part, protruding out of the edge of the flange plate, of the hydrogen detection adhesive tape is attached to the left side edge and the right side edge of the pressing plate through the attaching plate; and the hydrogen detection adhesive tape is prevented from being separated from the flange plate due to more dust.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen processing, and particularly relates to a hydrogen leakage monitoring device for a hydrogen production station. Background Art

[0002] In the process of hydrogen production in a hydrogen production station, hydrogen needs to be transported through a gas transmission pipeline. To check whether there is hydrogen leakage in the gas transmission pipeline, hydrogen detection tape is usually wound around the connection of the transmission pipeline for monitoring. However, the existing hydrogen detection tape is usually wound manually, which is likely to cause the hydrogen detection tape to be skewed or wrinkled, resulting in the hydrogen detection tape not being fully attached to the pipeline connection, thereby reducing the detection effect of the hydrogen detection tape. Moreover, when there are impurities such as dust at the pipeline connection, the adhesiveness of the hydrogen detection tape is likely to decrease, and the sealing performance of the hydrogen detection tape is reduced. When hydrogen leakage occurs at the pipeline connection, hydrogen is likely to escape from the gap between the tape and the pipeline connection, thereby reducing the accuracy of the hydrogen detection tape. Summary of the Invention

[0003] In order to overcome the shortcomings that when the hydrogen detection tape is wound manually, it is easy for the hydrogen detection tape to be skewed or wrinkled, reducing the detection effect of the hydrogen detection tape, and moreover, when there are impurities such as dust at the pipeline connection, the sealing performance of the hydrogen detection tape is reduced, and when hydrogen leakage occurs at the pipeline connection, hydrogen is likely to escape from the gap between the tape and the pipeline connection, thereby reducing the accuracy of the hydrogen detection tape, the present invention provides a hydrogen leakage monitoring device for a hydrogen production station.

[0004] The technical solution of the present invention is: A hydrogen leakage monitoring device for a hydrogen production station, comprising a fixed frame, a rotating ring and a motor; the fixed frame is rotatably connected with the rotating ring; a motor is installed inside the fixed frame; the motor and the rotating ring are driven by gear meshing; notches are provided on the front sides of both the fixed frame and the rotating ring; the gas transmission pipe is located at the center of the rotating ring; the connection of the gas transmission pipe is a flange; further comprising a driving assembly, a pressing plate, a hydrogen detection tape, a second driving assembly, a fixing plate, a fitting roller, a third driving assembly, a cutting knife and an auxiliary assembly; a plurality of side plates are installed on both the left and right sides of the fixed frame; a driving assembly is installed on each side plate; a pressing plate is connected to each driving assembly; the pressing plate is driven to move up, down, left and right by the driving assembly; the hydrogen detection tape is rotatably connected to the rotating ring; the fixing plate is connected to the driving assembly; the fixing plate is driven to move up and down by the driving assembly; a fitting roller for preventing the hydrogen detection tape from being wrinkled is rotatably connected to the fixing plate; the cutting knife is connected to the driving assembly; the cutting knife is driven to move up and down by the driving assembly; the hydrogen detection tape is wound around the surfaces of the fitting roller and the cutting knife; an auxiliary assembly for cleaning the dust and impurities on the surface of the flange is provided on the fixing plate.

[0005] Further, the driving assembly includes a first driving member, a second driving member, a third driving member, and a fourth driving member; a first driving member is fixedly connected to each side plate; a second driving member is fixedly connected to the telescopic end of each first driving member; the telescopic end of each second driving member is connected to the adjacent pressing plate; a number of third driving members are fixedly connected to the rotating ring; the telescopic ends of two third driving members are jointly fixedly connected to the fixing plate; a number of fourth driving members are fixedly connected to the fixing plate; the telescopic ends of two fourth driving members are jointly fixedly connected to the cutting knife.

[0006] Further, the auxiliary assembly includes a scraping plate; a scraping plate for cleaning the dust and impurities on the surface of the flange is fixedly connected to the fixing plate; the scraping plate is located above the fitting roller.

[0007] Further, a sponge block is wrapped around the side surface of the scraping plate close to the flange.

[0008] Further, the auxiliary assembly further includes a fitting plate; a number of fitting plates for preventing the hydrogen detection tape from separating from the flange are fixedly connected to the fixing plate; each fitting plate is located above the fitting roller; the hydrogen detection tape is located between the fitting plate and the scraping plate.

[0009] Further, a protruding portion is provided on the pressing plate.

[0010] Further, the thickness of the pressing plate is set to be greater than the inner cavity diameter of the flange. When the left pressing plate is in contact with the right pressing plate, a sealing cavity is formed between all the pressing plates and the gas pipeline.

[0011] Further, a sealing gasket is provided at the contact surface between the left pressing plate and the right pressing plate.

[0012] Further, a gas storage bin is further included; a number of gas storage bins are fixedly connected to the fixing frame; high-pressure neutralizing gas is stored in the gas storage bin; a number of exhaust holes are provided on each pressing plate; a PH sensor is provided on each pressing plate.

[0013] Further, a number of exhaust holes are arranged in a ring on the inner wall of the pressing plate, and the exhaust holes are aligned with the connection between two adjacent flanges.

[0014] The beneficial effects are as follows: Compared with manually winding the hydrogen detection tape, by using the fitting roller to fit the flange, the hydrogen detection tape is smoothly fitted on the surface of the flange, avoiding wrinkles on the hydrogen detection tape. Moreover, the safety of winding the hydrogen detection tape by the fitting roller is high, reducing the risk of poisoning during manual handling. By fixing the fixing frame on the gas pipeline with the pressing plate, the hydrogen detection tape is prevented from shaking during winding, thus avoiding the phenomenon of deviation during manual winding of the hydrogen detection tape. Guide the hydrogen detection tape to bend through the bonding plate, so that the parts of the hydrogen detection tape protruding from the edge of the flange are respectively attached to the left side and the right side of the pressing plate, avoiding the adhesion surface between the hydrogen detection tape and the flange edge from being exposed to the air, thereby preventing the hydrogen detection tape from detaching from the flange due to excessive dust attachment; Drive the pressing plate through the second driving member to apply pressure to the flange on the right side, causing the flange to shake slightly up and down. At this time, only need to observe whether the hydrogen detection tape wound around the flange changes color. When the hydrogen detection tape does not change color, it can be judged that the sealing performance of the sealing ring of the flange is intact; Squeeze the hydrogen detection tape located on the left and right sides of the flange through the protruding part, so that the parts of the hydrogen detection tape on the left and right sides of the flange are closely attached to the flange, thereby preventing hydrogen from overflowing between the flange and the hydrogen detection tape, and further preventing the leaked hydrogen from being discharged into the air; Neutralize the acidic gas with the neutralizing gas to avoid damage to the monitoring equipment caused by the acidic gas. Moreover, by injecting a large amount of neutralizing gas into the sealing cavity, the hydrogen concentration in the sealing cavity is reduced, thereby reducing the possibility of hydrogen explosion in the sealing cavity. Brief Description of the Drawings

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the hydrogen leakage monitoring equipment for a hydrogen production station of the present invention; Figure 2 It is a state diagram of the pressing plate of the present invention in the open state; Figure 3 It is a cross-sectional view of the rotating ring of the present invention; Figure 4 For the present invention Figure 3 The enlarged view at A in; Figure 5 It is a three-dimensional structural schematic diagram of the auxiliary component of the present invention; Figure 6 It is a state diagram of the hydrogen detection tape attachment of the present invention; Figure 7 It is a state diagram of the pressing plate of the present invention in the closed state; Figure 8 It is a three-dimensional structural schematic diagram of the combination of the pressing plate and the gas transmission pipe of the present invention; Figure 9 It is a three-dimensional structural schematic diagram of the pressing plate of the present invention.

[0016] In the attached drawings: 1 - fixing frame, 1001 - side plate, 2 - swivel ring, 3 - pressing plate, 3001 - protruding part, 3002 - sealing cavity, 3003 - exhaust hole, 4 - gas transmission pipe, 4001 - flange, 5 - hydrogen detection tape, 6 - fixing plate, 7 - laminating roller, 8 - cutter, 201 - motor, 202 - first driving member, 203 - second driving member, 204 - third driving member, 205 - fourth driving member, 206 - scraper, 207 - laminating plate, 301 - gas storage bin. Detailed implementation mode

[0017] The embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0018] Embodiment 1 As Figures 1-6 and Figure 8 shown, a hydrogen leakage monitoring device for a hydrogen production station includes a fixing frame 1, a swivel ring 2 and a motor 201; the fixing frame 1 is rotatably connected to the swivel ring 2; a motor 201 is installed inside the fixing frame 1; the motor 201 and the swivel ring 2 transmit power through gear meshing; notches are provided on the front sides of both the fixing frame 1 and the swivel ring 2; the gas transmission pipe 4 is located at the center of the swivel ring 2; the connection part of the gas transmission pipe 4 is a flange 4001. It further includes a driving assembly, a pressing plate 3, a hydrogen detection tape 5, a second driving assembly, a fixing plate 6, a laminating roller 7, a third driving assembly, a cutter 8 and an auxiliary assembly; two upper and lower symmetric side plates 1001 are installed on both the left and right sides of the fixing frame 1; a driving assembly is installed on each side plate 1001; a pressing plate 3 is connected to each driving assembly; the pressing plate 3 is driven to move up, down, left and right by the driving assembly; the hydrogen detection tape 5 is rotatably connected to the swivel ring 2; the fixing plate 6 is connected to the driving assembly; the fixing plate 6 is driven to move up and down by the driving assembly; the laminating roller 7 is rotatably connected to the fixing plate 6; the cutter 8 is connected to the driving assembly; the cutter 8 is driven to move up and down by the driving assembly; the hydrogen detection tape 5 is wound around the surfaces of the laminating roller 7 and the cutter 8; an auxiliary assembly is provided on the fixing plate 6.

[0019] The driving assembly includes a first driving member 202, a second driving member 203, a third driving member 204 and a fourth driving member 205; a first driving member 202 is fixedly connected to each side plate 1001, and the first driving member 202 is an electric push rod; a second driving member 203 is fixedly connected to the telescopic end of each first driving member 202, and the second driving member 203 is an electric push rod; the telescopic end of each second driving member 203 is connected to the adjacent pressing plate 3; two left and right symmetric third driving members 204 are fixedly connected to the swivel ring 2, and the third driving member 204 is an electric push rod; the telescopic ends of the two third driving members 204 are fixedly connected to the fixing plate 6 together; two left and right symmetric fourth driving members 205 are fixedly connected to the fixing plate 6, and the fourth driving member 205 is an electric push rod; the telescopic ends of the two fourth driving members 205 are fixedly connected to the cutter 8 together.

[0020] The auxiliary component includes a scraper 206; the scraper 206 is fixedly connected to the fixing plate 6; the scraper 206 is located above the laminating roller 7.

[0021] A sponge block is wrapped around the side surface of the scraper 206 close to the flange 4001.

[0022] The auxiliary component further includes a laminating plate 207; two symmetrically arranged laminating plates 207 are fixedly connected to the fixing plate 6; each laminating plate 207 is located above the laminating roller 7; the hydrogen detection tape 5 is located between the laminating plate 207 and the scraper 206.

[0023] Furthermore, in order to prevent hydrogen from leaking out between the flange 4001 and the hydrogen detection tape 5, a protruding portion 3001 is provided on the pressing plate 3.

[0024] Furthermore, in order to improve the safety of hydrogen monitoring, the thickness of the pressing plate 3 is set to be greater than the inner cavity diameter of the flange 4001. When the left pressing plate 3 is in contact with the right pressing plate 3, a sealing cavity 3002 is formed between all the pressing plates 3 and the gas transmission pipe 4.

[0025] Furthermore, in order to improve the sealing performance of the sealing cavity 3002, a sealing gasket is provided at the contact surface between the left pressing plate 3 and the right pressing plate 3.

[0026] In the process of hydrogen production in a hydrogen production station, the hydrogen detection tape 5 is usually used to wind around the connection of the transmission pipeline for monitoring. When hydrogen leaks at the connection of the transmission pipeline, the sensing layer of the hydrogen detection tape 5 chemically reacts with hydrogen and changes color, thus reminding personnel that hydrogen leakage has occurred at the connection. The following is a detailed description of the hydrogen leakage detection at the flange 4001: When conducting a hydrogen leakage detection at the flange 4001, first manually align the notches of the fixing frame 1 and the swivel ring 2 with the gas pipeline 4, pass the fixing frame 1 and the swivel ring 2 through the gas pipeline 4, and make the center of the fixing frame 1 and the center of the flange 4001 at the same point. Then control the second driving member 203 to drive the two pressing plates 3 to move towards each other, so that the upper pressing plate 3 moves downward and the lower pressing plate 3 moves upward until the upper pressing plate 3 fits with the lower pressing plate 3. At this time, the gas pipeline 4 is located in the middle of the adjacent two pressing plates 3. At this time, the hydrogen detection tape 5, the fixing plate 6 and their connecting parts are located below the flange 4001. Then control the third driving member 204 to drive the fixing plate 6 and its connecting parts to move upward, so as to push the hydrogen detection tape 5 covering the surface of the laminating roller 7 upward through the laminating roller 7, so that the hydrogen detection tape 5 fits with the flange 4001, and at this time the hydrogen detection tape 5 is located between the flange 4001 and the laminating roller 7. Then control the motor 201 to operate. Through the gear transmission between the motor 201 and the swivel ring 2, with the view from right to left as the reference, the swivel ring 2 rotates clockwise, thereby driving the hydrogen detection tape 5, the fixing plate 6 and their connecting parts to rotate clockwise, so that the hydrogen detection tape 5 rotates clockwise on the surface of the flange 4001. When the hydrogen detection tape 5 winds around the flange 4001 for one circle, control the fourth driving member 205 to drive the cutter 8 to move upward, so that the cutter 8 cuts the hydrogen detection tape 5, thereby cutting off the hydrogen detection tape 5, and completing the winding of the hydrogen detection tape 5 on the surface of the flange 4001. Compared with manually winding the hydrogen detection tape 5, by laminating the flange 4001 through the laminating roller 7, the hydrogen detection tape 5 is smoothly laminated on the surface of the flange 4001, avoiding wrinkles of the hydrogen detection tape 5. Moreover, the safety of winding the hydrogen detection tape 5 through the laminating roller 7 is high, reducing the risk of poisoning during manual handling. By fixing the fixing frame 1 on the gas pipeline 4 with the pressing plate 3, the hydrogen detection tape 5 is prevented from shaking during winding, thereby avoiding the phenomenon of skew when manually winding the hydrogen detection tape 5. After the hydrogen detection tape 5 is wound, remove the fixing frame 1 from the gas pipeline 4, and conduct continuous hydrogen leakage detection at the flange 4001 through the hydrogen detection tape 5.

[0027] When there are impurities such as dust on the surface of the flange 4001, it is easy to reduce the viscosity of the hydrogen detection tape 5, which may easily cause the hydrogen detection tape 5 to separate from the flange 4001, reducing the sealing performance of the hydrogen detection tape 5. When hydrogen leaks at the flange 4001, hydrogen is likely to escape from the gap between the tape and the flange 4001, thereby reducing the accuracy of the hydrogen detection tape 5. Therefore, when the third driving member 204 drives the fixing plate 6 to move upward, since the scraper 206 is located above the laminating roller 7, the scraper 206 contacts the flange 4001 earlier than the hydrogen detection tape 5. Taking the view from right to left as a reference, the fixing plate 6 is driven by the rotary ring 2 to rotate clockwise, causing the scraper 206 to scrape the surface of the flange 4001 clockwise. Since the side surface of the scraper 206 close to the flange 4001 is wrapped with a sponge block, the dust and impurities on the surface of the flange 4001 are wiped clean by the sponge block on the scraper 206, preventing dust from adhering to the hydrogen detection tape 5 and causing the hydrogen detection tape 5 to separate from the flange 4001, thereby reducing the accuracy of the hydrogen detection tape 5. After the dust on the surface of the flange 4001 is cleaned, the fixing plate 6 is controlled to continue moving upward, the scraper 206 is pressed to fit the flange 4001, and the hydrogen detection tape 5 contacts the flange 4001. Subsequently, the rotary ring 2 is controlled to drive the hydrogen detection tape 5 to rotate clockwise to complete the winding of the hydrogen detection tape 5. And, as shown in the figure, at this time, the width of the hydrogen detection tape 5 protrudes from the edge of the flange 4001, so that the adhesion surface of the hydrogen detection tape 5 and the flange 4001 is exposed to the air, which may lead to hydrogen leakage. At this time, dust in the air is likely to gather at the adhesion surface, which may easily cause the hydrogen detection tape 5 to separate from the flange 4001. Therefore, taking the view from right to left as a reference, when the third driving member 204 drives the fixing plate 6 to move upward, the two laminating plates 207 are synchronously driven to move upward, so that the two laminating plates 207 are respectively in contact with the left side and the right side of the adjacent pressing plate 3. When the rotary ring 2 drives the fixing plate 6 to rotate clockwise, the laminating plate 207 contacts the hydrogen detection tape 5 protruding from the edge of the flange 4001, and the hydrogen detection tape 5 is guided by the laminating plate 207 to bend, so that the parts of the hydrogen detection tape 5 protruding from the edge of the flange 4001 are respectively in contact with the left side and the right side of the pressing plate 3, preventing the adhesion surface of the hydrogen detection tape 5 and the edge of the flange 4001 from being exposed to the air, thereby avoiding the hydrogen detection tape 5 from separating from the flange 4001 due to the adhesion of more dust.

[0028] After the sealing ring between the flanges 4001 has been used for a long time, it will age. When the flanges 4001 are displaced by external forces, cracks are likely to occur in the sealing ring, resulting in hydrogen leakage. When the hydrogen detection tape 5 is conventionally used to monitor hydrogen leakage at the flanges 4001, the sealing ring of the flanges 4001 usually cannot be detected. Therefore, after the hydrogen detection tape 5 is wound, at this time, the left pressing plate 3 and the right pressing plate 3 respectively clamp the left and right sides of the gas pipeline 4. Subsequently, by controlling the telescopic ends of the two second driving members 203 on the right side to move downward, the pressing plate 3 on the right side presses the flange 4001 on the right side downward. Then, control the telescopic ends of the two second driving members 203 on the right side to move upward, so that the pressing plate 3 on the right side presses the flange 4001 on the right side upward. Repeat this process, so that the pressing plate 3 is driven by the second driving member 203 to apply pressure to the flange 4001 on the right side, causing the gas pipeline 4 to shake slightly. At this time, only need to observe whether the hydrogen detection tape 5 wound around the flange 4001 changes color. When the hydrogen detection tape 5 does not change color, it can be judged that the sealing performance of the sealing ring of the flange 4001 is intact.

[0029] Furthermore, when the pressing plate 3 slightly shakes the gas transmission pipe 4 and leakage occurs at the flange 4001 due to the aging of the sealing ring of the flange 4001, the leaked hydrogen is located inside the hydrogen detection tape 5. As the hydrogen continues to leak, the internal pressure of the hydrogen detection tape 5 increases, making it easy for hydrogen to overflow between the flange 4001 and the hydrogen detection tape 5, and then causing the leaked hydrogen to be discharged into the air. Therefore, when leakage occurs at the flange 4001, the second driving member 203 is controlled to separate the upper pressing plate 3 from the side pressing plate 3, and then the telescopic ends of the two first driving members 202 are controlled to move towards each other, thereby pushing the left pressing plate 3 and the right pressing plate 3 to move towards each other until the protruding portion 3001 of the pressing plate 3 contacts the adjacent flange 4001. Then, the second driving member 203 is controlled to make the upper pressing plate 3 and the side pressing plate 3 fit together. At this time, the hydrogen detection tape 5 located on the left and right sides of the flange 4001 is squeezed by the protruding portion 3001, so that the parts of the hydrogen detection tape 5 located on the left and right sides of the flange 4001 are closely attached to the flange 4001, thereby preventing hydrogen from overflowing between the flange 4001 and the hydrogen detection tape 5 and then causing the leaked hydrogen to be discharged into the air. On this basis, as the internal air pressure of the hydrogen detection tape 5 increases, the hydrogen detection tape 5 is stretched by the force, making it easy for the hydrogen detection tape 5 to be damaged and then causing hydrogen leakage. Therefore, when the left pressing plate 3 fits with the right pressing plate 3, a sealing cavity 3002 is formed between all the pressing plates 3 and the gas transmission pipe 4. The hydrogen leaked from the damaged part of the hydrogen detection tape 5 is collected through the sealing cavity 3002, avoiding the occurrence of a fire caused by hydrogen leakage to the outside air and improving the safety of hydrogen monitoring. Furthermore, by providing a sealing gasket at the contact surface between the left pressing plate 3 and the right pressing plate 3, the sealing performance of the sealing cavity 3002 is improved, avoiding hydrogen leakage from the gap between the left pressing plate 3 and the right pressing plate 3 and further improving the safety of hydrogen monitoring.

[0030] Embodiment 2 On the basis of Embodiment 1, as Figure 1 and Figures 7-9 shown, it further includes a gas storage bin 301; two gas storage bins 301 are fixedly connected to the fixing frame 1; high-pressure neutral gas is stored in the gas storage bin 301; a plurality of exhaust holes 3003 are formed in each pressing plate 3; and a PH sensor is provided on each pressing plate 3.

[0031] Furthermore, to improve the neutralization speed of acidic gases, a plurality of exhaust holes 3003 are arranged in a ring on the inner wall of the pressing plate 3, and the exhaust holes 3003 are aligned with the connection part of two adjacent flanges 4001.

[0032] During the process of hydrogen production, some acidic gases will be doped in the hydrogen. When the hydrogen leaks, the acidic gases will overflow together with the hydrogen, which is likely to damage the monitoring equipment. Therefore, the pH sensor in the pressing plate 3 is used to detect the acidity of the air in the sealing cavity 3002. When the acidic gases enter the sealing cavity 3002 together with the hydrogen and the pH sensor detects the acidic gases in the sealing cavity 3002, the neutralizing gas in the gas storage bin 301 is controlled to be input into the exhaust holes 3003 through the pipeline, and then the acidic gases are neutralized by the neutralizing gas to avoid damage to the monitoring equipment. Moreover, by injecting a large amount of neutralizing gas into the sealing cavity 3002, the hydrogen concentration in the sealing cavity 3002 is reduced, thus reducing the possibility of hydrogen explosion in the sealing cavity 3002. At the same time, since a large amount of neutralizing gas is injected into the sealing cavity 3002, the air pressure in the sealing cavity 3002 increases, so that the air pressure difference between the sealing cavity 3002 and the gas pipeline 4 decreases, and then the hydrogen leakage speed is reduced, which buys time for the subsequent maintenance of the gas pipeline 4. On this basis, since a plurality of exhaust holes 3003 are arranged in a ring shape on the inner wall of the pressing plate 3 and the exhaust holes 3003 are aligned with the connection part of two adjacent flange plates 4001, it is convenient for the neutralizing gas and the acidic gases in the sealing cavity 3002 to be fully mixed, improving the neutralization speed of the acidic gases and further reducing the damage of the acidic gases to the monitoring equipment.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent substitution on some of the technical features. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hydrogen leakage monitoring device for a hydrogen production station, comprising a fixed frame (1), a rotating ring (2) and a motor (201); the fixed frame (1) is rotatably connected to the rotating ring (2); the motor (201) is installed in the fixed frame (1); the motor (201) and the rotating ring (2) transmit power through gear meshing; the front sides of the fixed frame (1) and the rotating ring (2) are both provided with notches; the gas transmission pipe (4) is located at the center of the rotating ring (2); the connection point of the gas transmission pipe (4) is a flange (4001); the characteristics are that, The invention also comprises a driving assembly, a pressing plate (3), a hydrogen detection tape (5), a second driving assembly, a fixing plate (6), a laminating roller (7), a third driving assembly, a cutter (8) and an auxiliary assembly; a plurality of side plates (1001) are installed on the left and right sides of the fixing frame (1); a driving assembly is installed on each side plate (1001); each driving assembly is connected to a pressing plate (3); the pressing plate (3) is driven to move up, down, left and right by the driving assembly; a hydrogen detection tape (5) is connected to the rotating ring (2) for rotation; 5); a fixed plate (6) is connected to the driving assembly; the fixed plate (6) is driven to move up and down by the driving assembly; a laminating roller (7) is rotatably connected to the fixed plate (6) to prevent the hydrogen detection tape (5) from wrinkling; a cutter (8) is connected to the driving assembly; the cutter (8) is driven to move up and down by the driving assembly; the hydrogen detection tape (5) is arranged to pass over the surfaces of the laminating roller (7) and the cutter (8); an auxiliary component for cleaning dust and impurities on the surface of the flange (4001) is provided on the fixed plate (6).

2. The hydrogen leakage monitoring device for a hydrogen production station according to claim 1 is characterized in that: The driving assembly comprises a first driving member (202), a second driving member (203), a third driving member (204) and a fourth driving member (205); each side plate (1001) is fixedly connected to a first driving member (202); each first driving member (202) is fixedly connected to a telescopic end thereof; each second driving member (203) is connected to an adjacent pressing plate (3); a plurality of third driving members (204) are fixedly connected to the rotating ring (2); the telescopic ends of two third driving members (204) are fixedly connected to a fixed plate (6); a plurality of fourth driving members (205) are fixedly connected to the fixed plate (6); and the telescopic ends of two fourth driving members (205) are fixedly connected to a cutter (8).

3. The hydrogen leakage monitoring device for a hydrogen production station according to claim 2 is characterized in that: The auxiliary component comprises a scraper (206); the scraper (206) for cleaning dust and impurities on the surface of the flange (4001) is fixedly connected to the fixed plate (6); the scraper (206) is located above the laminating roller (7).

4. The hydrogen leakage monitoring device for a hydrogen production station according to claim 3 is characterized in that: The side surface of the scraper (206) close to the flange (4001) is wrapped with a sponge block.

5. The hydrogen leakage monitoring device for a hydrogen production station according to claim 4 is characterized in that: The auxiliary component also includes a laminating plate (207); a plurality of laminating plates (207) are fixedly connected to the fixed plate (6) for preventing the hydrogen detection tape (5) from being separated from the flange (4001); each laminating plate (207) is located above the laminating roller (7); and the hydrogen detection tape (5) is located between the laminating plate (207) and the scraper (206).

6. The hydrogen leakage monitoring device for a hydrogen production station according to claim 2 is characterized in that: A protrusion (3001) is provided on the pressing plate (3).

7. A hydrogen leakage monitoring device for a hydrogen production station according to claim 6, characterized in that: The thickness of the pressing plate (3) is set to be greater than the inner diameter of the flange (4001), and when the left pressing plate (3) and the right pressing plate (3) are in contact with each other, a sealed cavity (3002) is formed between all the pressing plates (3) and the gas pipe (4).

8. The hydrogen leakage monitoring device for a hydrogen production station according to claim 7 is characterized in that: A sealing gasket is provided at the contact surface between the left pressure plate (3) and the right pressure plate (3).

9. The hydrogen leakage monitoring device for a hydrogen production station according to claim 8, characterized in that: It also includes a gas storage bin (301); a plurality of gas storage bins (301) are fixedly connected to the fixed frame (1); high-pressure neutralizing gas is stored in the gas storage bins (301); a plurality of exhaust holes (3003) are opened on each pressing plate (3); and a pH sensor is arranged on each pressing plate (3).

10. A hydrogen leakage monitoring device for a hydrogen production station according to claim 9, characterized in that: A plurality of exhaust holes (3003) are arranged in a ring shape on the inner wall of the pressing plate (3), and the exhaust holes (3003) are aligned with the connection between two adjacent flanges (4001).

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