Hydrogen leakage monitoring device for a hydrogen production station

Abstract

The present application relates to hydrogen processing technology field, especially to a kind of hydrogen leakage monitoring equipment for hydrogen production station, including fixed frame, swivel ring and motor etc.;Fixed frame is rotatably connected with swivel ring.;Motor is installed in fixed frame.;Motor and swivel ring are transmitted power by gear engagement. The present application is adhered to flange plate by adhering roller, so that hydrogen detection adhesive tape is evenly adhered to the surface of flange plate, to avoid hydrogen detection adhesive tape from wrinkling, and the safety of hydrogen detection adhesive tape winding by adhering roller is high, to reduce the risk of poisoning when manual processing, by fixing the fixed frame on gas pipe with pressing plate, to avoid hydrogen detection adhesive tape from shaking when winding, to avoid the phenomenon of hydrogen detection adhesive tape from skewing when winding manually, and by adhering plate, the part of hydrogen detection adhesive tape protruding from the edge of flange plate is adhered to the left side and right side of pressing plate respectively, to avoid hydrogen detection adhesive tape from detaching from flange plate due to more dust adhering.

Description

Technical Field

[0001] This invention relates to the field of hydrogen processing technology, and in particular to a hydrogen leak monitoring device for hydrogen production stations. Background Technology

[0002] In the hydrogen production process at hydrogen production stations, hydrogen needs to be transported through pipelines. To check for hydrogen leaks in these pipelines, hydrogen detection tape is typically wrapped around the pipeline connections for monitoring. However, current methods for wrapping hydrogen detection tape manually often result in the tape becoming skewed or wrinkled, preventing it from adhering completely to the pipeline connection and reducing its detection effectiveness. Furthermore, the presence of dust or other impurities at the pipeline connection can reduce the tape's adhesion and sealing performance. When a hydrogen leak occurs at the connection, hydrogen can easily escape through the gaps between the tape and the pipeline, further reducing the accuracy of the detection. Summary of the Invention

[0003] To overcome the shortcomings of manually wrapping hydrogen detection tape, which easily leads to skewing and wrinkling of the tape, reducing its detection effectiveness, and the reduced sealing performance of the tape when dust or other impurities are present at pipe connections, allowing hydrogen to easily escape from the gaps between the tape and the pipe in the event of a leak, thus reducing the accuracy of the hydrogen detection tape, this invention provides a hydrogen leak monitoring device for hydrogen production stations.

[0004] The technical solution of this invention is: a hydrogen leak monitoring device for a hydrogen production station, comprising a fixed frame, a rotating ring, and a motor; the fixed frame is rotatably connected to the rotating ring; the motor is installed inside the fixed frame; the motor and the rotating ring transmit power through gear meshing; both the fixed frame and the rotating ring have notches on their front sides; a gas transmission pipe is located at the center of the rotating ring; the connection of the gas transmission pipe is a flange; it also includes a drive assembly, a pressure plate, a hydrogen detection tape, a second drive assembly, a fixed plate, a bonding roller, a third drive assembly, a cutter, and auxiliary components; several side plates are installed on the left and right sides of the fixed frame; each side plate... Each component is equipped with a drive assembly; each drive assembly is connected to a pressure plate; the drive assembly drives the pressure plate to move up, down, left, and right; a hydrogen detection tape is rotatably connected to the rotating ring; a fixing plate is connected to the drive assembly; the drive assembly drives the fixing plate to move up and down; a bonding roller to prevent the hydrogen detection tape from wrinkling is rotatably connected to the fixing plate; a cutter is connected to the drive assembly; the drive assembly drives the cutter to move up and down; the hydrogen detection tape is wrapped around the surfaces of the bonding roller and the cutter; an auxiliary component for cleaning dust and impurities from the flange surface is provided on the fixing plate.

[0005] Furthermore, the drive assembly includes a first drive member, a second drive member, a third drive member, and a fourth drive member; a first drive member is fixedly connected to each side plate; a second drive member is fixedly connected to the telescopic end of each first drive member; the telescopic end of each second drive member is connected to an adjacent pressure plate; several third drive members are fixedly connected to the rotating ring; the telescopic ends of two third drive members are jointly fixedly connected to a fixed plate; several fourth drive members are fixedly connected to the fixed plate; the telescopic ends of two fourth drive members are jointly fixedly connected to the cutter.

[0006] Furthermore, the auxiliary components include a scraper; a scraper for cleaning dust and impurities from the flange surface is fixed to the fixed plate; the scraper is located above the bonding roller.

[0007] Furthermore, the scraper surface near the flange is wrapped with a sponge block.

[0008] Furthermore, the auxiliary components also include bonding plates; several bonding plates are fixed to the fixing plate to prevent the hydrogen detection tape from detaching from the flange; each bonding plate is located above the bonding roller; the hydrogen detection tape is located between the bonding plate and the scraper.

[0009] Furthermore, the pressure plate is provided with protrusions.

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

[0011] Furthermore, a sealing gasket is provided at the contact surface between the left and right pressure plates.

[0012] Furthermore, it also includes a gas storage chamber; several gas storage chambers are fixed to the fixed frame; the gas storage chambers store high-pressure neutralized gas; several exhaust holes are opened on each pressure plate; and a pH sensor is installed on each pressure plate.

[0013] Furthermore, several vent holes are arranged in a ring on the inner wall of the pressure plate, and the vent holes are aligned with the connection between two adjacent flanges.

[0014] The beneficial effects are: Compared to manually wrapping hydrogen detection tape, using a bonding roller to apply the tape to the flange ensures a smooth and even application of the tape to the flange surface, preventing wrinkles. Furthermore, the bonding roller method offers greater safety, reducing the risk of poisoning during manual handling. By fixing the mounting bracket to the gas pipeline with a pressure plate, the tape is prevented from shaking during wrapping, thus avoiding the skewing that can occur with manual wrapping. The hydrogen detection tape is guided to bend by the bonding plate, so that the part of the hydrogen detection tape protruding from the edge of the flange is bonded to the left and right sides of the pressure plate respectively. This prevents the adhesive surface of the hydrogen detection tape to the edge of the flange from being exposed to the air, thereby preventing the hydrogen detection tape from detaching from the flange due to excessive dust. The second driving component drives the pressure plate to apply pressure to the flange on the right side, causing the flange to shake slightly up and down. At this time, it is only necessary to observe whether the hydrogen detection tape wrapped around the flange changes color. When the hydrogen detection tape does not change color, it can be determined that the sealing performance of the flange's sealing ring is intact. The protrusions squeeze the hydrogen detection tape located on the left and right sides of the flange, ensuring that the portions of the hydrogen detection tape on the left and right sides of the flange are tightly fitted to the flange. This prevents hydrogen from leaking out between the flange and the hydrogen detection tape, thus preventing leaked hydrogen from being released into the air. The acidic gas is neutralized by neutralizing the neutralizing gas to prevent damage to the monitoring equipment. Furthermore, by injecting a large amount of neutralizing gas into the sealed cavity, the hydrogen concentration inside the sealed cavity is reduced, thereby decreasing the possibility of hydrogen explosion inside the sealed cavity. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the hydrogen leakage monitoring device for hydrogen production stations according to the present invention; Figure 2 This is a diagram showing the pressure plate of the present invention in its open state; Figure 3 This is a cross-sectional view of the swivel ring of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a three-dimensional structural diagram of the auxiliary component of the present invention; Figure 6 This is a diagram showing the bonding state of the hydrogen detection tape of the present invention; Figure 7 This is a diagram showing the closed state of the pressure plate of the present invention; Figure 8 This is a three-dimensional structural diagram of the pressure plate and gas pipeline combination of the present invention; Figure 9 This is a schematic diagram of the three-dimensional structure of the pressure plate of the present invention.

[0016] In the attached drawings, the following labels are used: 1-fixed frame, 1001-side plate, 2-rotating ring, 3-pressure plate, 3001-protrusion, 3002-sealing cavity, 3003-exhaust hole, 4-gas pipe, 4001-flange, 5-hydrogen detection tape, 6-fixed plate, 7-lamination roller, 8-cutter, 201-motor, 202-first driving component, 203-second driving component, 204-third driving component, 205-fourth driving component, 206-scraper, 207-lamination plate, 301-gas storage chamber. Detailed Implementation

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

[0018] Example 1 like Figures 1-6 and Figure 8 As shown, a hydrogen leak monitoring device for a hydrogen production station includes 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 inside the fixed frame 1; the motor 201 and the rotating ring 2 transmit power through gear meshing; both the fixed frame 1 and the rotating ring 2 have notches on their front sides; a gas transmission pipe 4 is located at the center of the rotating ring 2; the connection of the gas transmission pipe 4 is a flange 4001; It also includes a drive assembly, a pressure plate 3, a hydrogen detection tape 5, a second drive assembly, a fixing plate 6, a bonding roller 7, a third drive assembly, a cutter 8, and auxiliary components; two symmetrical side plates 1001 are installed on the left and right sides of the fixing frame 1; a drive assembly is installed on each side plate 1001; a pressure plate 3 is connected to each drive assembly; the pressure plate 3 is moved up, down, left, and right by the drive assembly; the hydrogen detection tape 5 is rotatably connected to the rotating ring 2; the fixing plate 6 is connected to the drive assembly; the fixing plate 6 is moved up and down by the drive assembly; the bonding roller 7 is rotatably connected to the fixing plate 6; the cutter 8 is connected to the drive assembly; the cutter 8 is moved up and down by the drive assembly; the hydrogen detection tape 5 is wrapped around the surfaces of the bonding roller 7 and the cutter 8; auxiliary components are provided on the fixing plate 6.

[0019] The drive assembly includes a first drive component 202, a second drive component 203, a third drive component 204, and a fourth drive component 205. A first drive component 202, which is an electric push rod, is fixedly connected to each side plate 1001. A second drive component 203, which is also an electric push rod, is fixedly connected to the telescopic end of each first drive component 202. The telescopic end of each second drive component 203 is connected to an adjacent pressure plate 3. Two symmetrical third drive components 204, which are also electric push rods, are fixedly connected to the rotating ring 2. The telescopic ends of the two third drive components 204 are jointly fixedly connected to a fixed plate 6. Two symmetrical fourth drive components 205, which are also electric push rods, are fixedly connected to the fixed plate 6. The telescopic ends of the two fourth drive components 205 are jointly fixedly connected to a cutter 8.

[0020] The auxiliary components include a scraper 206; the scraper 206 is fixedly attached to the fixing plate 6; the scraper 206 is located above the bonding roller 7.

[0021] The scraper 206 has a sponge block wrapped around the side surface near the flange 4001.

[0022] The auxiliary components also include a bonding plate 207; two symmetrical bonding plates 207 are fixedly attached to the fixing plate 6; each bonding plate 207 is located above the bonding roller 7; and the hydrogen detection tape 5 is located between the bonding plate 207 and the scraper 206.

[0023] Furthermore, to prevent hydrogen from leaking out between the flange 4001 and the hydrogen detection tape 5, a protrusion 3001 is provided on the pressure plate 3.

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

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

[0026] In the hydrogen production process at a hydrogen production station, hydrogen detection tape 5 is typically used to monitor the connections of transmission pipelines. When a hydrogen leak occurs at a connection, the sensing layer of the hydrogen detection tape 5 reacts chemically with the hydrogen and changes color, thus alerting personnel to the leak. The following is a detailed description of hydrogen leak detection at flange 4001: When performing hydrogen leak detection at flange 4001, first, manually align the notches of the fixing bracket 1 and the rotating ring 2 with the gas transmission pipe 4, so that the fixing bracket 1 and the rotating ring 2 pass through the gas transmission pipe 4, and align the center of the fixing bracket 1 with the center of flange 4001. Then, control the second driving component 203 to drive the two pressure plates 3 to move towards each other, so that the upper pressure plate 3 moves downward and the lower pressure plate 3 moves upward, until the upper pressure plate 3 and the lower pressure plate 3 are in contact. At this time, the gas transmission pipe 4 is located in the middle of the two adjacent pressure plates 3. At this time, the hydrogen detection tape 5 and the fixing plate 6 are in place. The flange 4001 and its connecting parts are located below it. Then, the third drive unit 204 is controlled to drive the fixed plate 6 and its connecting parts to move upward, thereby pushing the hydrogen detection tape 5 covering the surface of the bonding roller 7 upward through the bonding roller 7, so that the hydrogen detection tape 5 is bonded to the flange 4001. At this time, the hydrogen detection tape 5 is located between the flange 4001 and the bonding roller 7. Then, the motor 201 is controlled to run. Through the gear transmission between the motor 201 and the rotating ring 2, the rotating ring 2 rotates clockwise with the reference from right to left, thereby driving the hydrogen detection... The tape 5, fixing plate 6, and their connecting parts rotate clockwise, causing the hydrogen detection tape 5 to rotate clockwise on the surface of flange 4001. After the hydrogen detection tape 5 has wrapped around flange 4001 once, the fourth driving component 205 drives the cutter 8 to move upward, causing the cutter 8 to cut the hydrogen detection tape 5, thus completing the wrapping of the hydrogen detection tape 5 on the surface of flange 4001. Compared with manual wrapping of hydrogen detection tape 5, the application roller 7 applies the tape to flange 4001, ensuring the hydrogen detection tape 5 is flatly adhered. The surface of flange 4001 is protected from wrinkling of the hydrogen detection tape 5. Furthermore, the use of the bonding roller 7 to wrap the hydrogen detection tape 5 ensures high safety and reduces the risk of poisoning during manual handling. By fixing the fixing bracket 1 to the gas pipeline 4 with the pressure plate 3, the hydrogen detection tape 5 is prevented from shaking during wrapping, thus avoiding skewing during manual wrapping. After the hydrogen detection tape 5 is wrapped, the fixing bracket 1 is removed from the gas pipeline 4, and continuous hydrogen leak detection is performed at flange 4001 using the hydrogen detection tape 5.

[0027] When dust or other impurities are present on the surface of flange 4001, the adhesion of the hydrogen detection tape 5 is easily reduced, which can cause the hydrogen detection tape 5 to detach from flange 4001, reducing the sealing performance of the hydrogen detection tape 5. When hydrogen leakage occurs at flange 4001, hydrogen can easily escape from the gap between the tape and flange 4001, thereby reducing the accuracy of the hydrogen detection tape 5. Therefore, when the third drive component 204 moves the fixing plate 6 upward, since the scraper 206 is located above the bonding roller 7, the scraper 206 contacts flange 4001 before the hydrogen detection tape 5. Taking a right-to-left view as a reference, The rotating ring 2 drives the fixed plate 6 to rotate clockwise, causing the scraper 206 to scrape the surface of the flange 4001 clockwise. Since the scraper 206 is wrapped with a sponge block near the flange 4001, the sponge block on the scraper 206 effectively wipes away dust and impurities from the surface of the flange 4001, preventing dust from adhering to the hydrogen detection tape 5 and causing it to detach from the flange 4001, thus reducing the accuracy of the hydrogen detection tape 5. After the dust on the surface of the flange 4001 is cleaned, the fixed plate 6 is controlled to continue moving upwards, and the scraper 206 is pressed against the flange 4001. The hydrogen detection tape 5 contacts the flange 4001. Then, the control ring 2 rotates the hydrogen detection tape 5 clockwise, completing the winding of the tape. As shown in the figure, the width of the hydrogen detection tape 5 protrudes beyond the edge of the flange 4001, exposing the adhesive surface between the tape 5 and the flange 4001 to the air, potentially leading to hydrogen leakage. Dust in the air easily accumulates at the adhesive surface, making it easy for the hydrogen detection tape 5 to detach from the flange 4001. Therefore, taking a right-to-left view as a reference, when the third drive component 204 moves the fixed plate 6 upwards, it simultaneously drives the two... The two bonding plates 207 move upward, so that they are respectively bonded to the left and right sides of the adjacent pressure plates 3. When the rotating ring 2 drives the fixing plate 6 to rotate clockwise, the bonding plate 207 contacts the hydrogen detection tape 5 protruding from the edge of the flange 4001. The bonding plate 207 guides the hydrogen detection tape 5 to bend, so that the part of the hydrogen detection tape 5 protruding from the edge of the flange 4001 is bonded to the left and right sides of the pressure plate 3 respectively. This prevents the adhesive surface of the hydrogen detection tape 5 and the edge of the flange 4001 from being exposed to the air, thereby preventing the hydrogen detection tape 5 from detaching from the flange 4001 due to excessive dust.

[0028] Because the sealing rings between flanges 4001 will age after prolonged use, when flange 4001 is subjected to external force and displacement, the sealing rings are prone to cracking, leading to hydrogen leakage. However, conventional hydrogen detection tape 5 is usually unable to detect the sealing rings of flange 4001 when used for hydrogen leakage monitoring. Therefore, after the hydrogen detection tape 5 is wrapped, the left and right pressure plates 3 clamp the left and right sides of the gas pipeline 4 respectively. Then, by controlling the telescopic ends of the two second drive components 203 located on the right side to move downwards, from... The pressure plate 3 on the right side presses down on the flange 4001 on the right side. Then, the telescopic ends of the two second drive components 203 on the right side are controlled to move upward, causing the pressure plate 3 on the right side to press upward on the flange 4001 on the right side. This process is repeated, so that the pressure plate 3 is driven by the second drive component 203 to apply pressure to the flange 4001 on the right side, causing the gas pipe 4 to shake slightly. At this time, it is only necessary to observe whether the hydrogen detection tape 5 wrapped around the flange 4001 changes color. When the hydrogen detection tape 5 does not change color, it can be determined that the sealing performance of the sealing ring of the flange 4001 is intact.

[0029] Furthermore, when the pressure plate 3 slightly shakes against the gas transmission pipe 4, a leak occurs at flange 4001 due to the aging of the sealing ring. At this time, the leaking 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 easier for hydrogen to overflow between flange 4001 and the hydrogen detection tape 5, thus causing the leaked hydrogen to be released into the air. Therefore, when a leak occurs at flange 4001, the second drive is controlled... The actuator 203 separates the upper pressure plate 3 from the side pressure plate 3, and then controls the telescopic ends of the two first driving members 202 to move towards each other, thereby pushing the left pressure plate 3 and the right pressure plate 3 to move towards each other until the protrusion 3001 of the pressure plate 3 contacts the adjacent flange 4001. Then, the second driving member 203 is controlled to make the upper pressure plate 3 and the side pressure plate 3 fit together. At this time, the protrusion 3001 squeezes the hydrogen detection tape 5 located on the left and right sides of the flange 4001, causing the hydrogen detection tape to be activated. The portion of the hydrogen detection tape 5 located on the left and right sides of the flange 4001 is tightly fitted to the flange 4001, thus preventing hydrogen from leaking out between the flange 4001 and the hydrogen detection tape 5, which would then release the leaked hydrogen into the air. Furthermore, as the internal pressure of the hydrogen detection tape 5 increases, the tape is stretched, making it prone to breakage and subsequent hydrogen leakage. Therefore, when the left and right pressure plates 3 are fitted together, a sealed cavity 3002 is formed between all the pressure plates 3 and the gas pipe 4. This cavity collects the hydrogen leaking from any breakage in the hydrogen detection tape 5, preventing hydrogen from leaking into the outside air and causing a fire, thus improving hydrogen monitoring safety. Furthermore, sealing gaskets are placed at the contact surfaces of the left and right pressure plates 3 to improve the sealing performance of the cavity 3002, preventing hydrogen leakage from the gap between the left and right pressure plates 3, further enhancing hydrogen monitoring safety.

[0030] Example 2 Based on Example 1, such as Figure 1 and Figures 7-9 As shown, it also includes a gas storage chamber 301; two gas storage chambers 301 are fixedly connected to the fixing frame 1; the gas storage chamber 301 stores high-pressure neutralization gas; each pressure plate 3 has several exhaust holes 3003; each pressure plate 3 is equipped with a pH sensor.

[0031] Furthermore, to improve the neutralization rate of acidic gases, several vent holes 3003 are arranged in a ring on the inner wall of the pressure plate 3, and the vent holes 3003 are aligned with the connection between two adjacent flanges 4001.

[0032] During hydrogen production, some acidic gases may be mixed in with the hydrogen. When hydrogen leaks, these acidic gases escape along with the hydrogen, potentially damaging monitoring equipment. Therefore, a pH sensor within the pressure plate 3 detects the acidity or alkalinity of the air inside the sealed cavity 3002. When acidic gases enter the sealed cavity 3002 along with hydrogen, and the pH sensor detects this acidic gas, neutralizing gas from the gas storage chamber 301 is introduced through a pipe into the exhaust port 3003. This neutralizing gas neutralizes the acidic gas, preventing damage to the monitoring equipment. Furthermore, injecting a large amount of neutralizing gas into the sealed cavity 3002 reduces its pH level. The hydrogen concentration inside the sealed cavity 3002 is reduced, thereby decreasing the possibility of hydrogen explosion. Simultaneously, the injection of a large amount of neutralizing gas into the sealed cavity 3002 increases the gas pressure inside, reducing the pressure difference between the sealed cavity 3002 and the gas transmission pipe 4, thus slowing down the rate of hydrogen leakage and allowing more time for subsequent maintenance of the gas transmission pipe 4. Furthermore, the annular arrangement of several vent holes 3003 on the inner wall of the pressure plate 3, aligned with the connection point of two adjacent flanges 4001, facilitates thorough mixing of the neutralizing gas and acidic gas within the sealed cavity 3002, increasing the neutralization rate of the acidic gas and reducing damage to the monitoring equipment caused by the acidic gas.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended 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 make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A hydrogen leak 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 inside the fixed frame (1); the motor (201) and the rotating ring (2) transmit power through gear meshing; both the fixed frame (1) and the rotating ring (2) have notches on their front sides; a gas transmission pipe (4) is located at the center of the rotating ring (2); the connection of the gas transmission pipe (4) is a flange (4001); characterized in that, It also includes a drive assembly, a pressure plate (3), a hydrogen detection tape (5), a second drive assembly, a fixing plate (6), a bonding roller (7), a third drive assembly, a cutter (8), and auxiliary components; several side plates (1001) are installed on the left and right sides of the fixing frame (1); a drive assembly is installed on each side plate (1001); a pressure plate (3) is connected to each drive assembly; the pressure plate (3) is moved up, down, left, and right by the drive assembly; a hydrogen detection tape is rotatably connected to the rotating ring (2). (5); A fixed plate (6) is connected to the drive assembly; the fixed plate (6) is moved up and down by the drive assembly; a bonding 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 drive assembly; the cutter (8) is moved up and down by the drive assembly; the hydrogen detection tape (5) is wrapped around the surfaces of the bonding 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); The drive assembly includes a first drive member (202), a second drive member (203), a third drive member (204), and a fourth drive member (205); a first drive member (202) is fixedly connected to each side plate (1001); a second drive member (203) is fixedly connected to the telescopic end of each first drive member (202); the telescopic end of each second drive member (203) is connected to the adjacent pressure plate (3); several third drive members (204) are fixedly connected to the swivel ring (2); the telescopic ends of two third drive members (204) are fixedly connected to the fixed plate (6); several fourth drive members (205) are fixedly connected to the fixed plate (6); the telescopic ends of two fourth drive members (205) are fixedly connected to the cutter (8); The auxiliary components also include a bonding plate (207); a number of bonding plates (207) are fixed on the fixing plate (6) to prevent the hydrogen detection tape (5) from detaching from the flange (4001); each bonding plate (207) is located above the bonding roller (7); the hydrogen detection tape (5) is located between the bonding plate (207) and the scraper (206).

2. The hydrogen leak monitoring device for a hydrogen production station according to claim 1, characterized in that, The auxiliary components include a scraper (206); a scraper (206) for cleaning dust and impurities on the surface of the flange (4001) is fixed on the fixed plate (6); the scraper (206) is located above the bonding roller (7).

3. The hydrogen leak monitoring device for a hydrogen production station according to claim 2, characterized in that, The scraper (206) has a sponge block wrapped around the side surface near the flange (4001).

4. The hydrogen leak monitoring device for a hydrogen production station according to claim 1, characterized in that, The pressure plate (3) is provided with a protrusion (3001).

5. A hydrogen leak monitoring device for a hydrogen production station according to claim 4, characterized in that, The thickness of the pressure plate (3) is set to be greater than the inner diameter of the flange (4001). When the left pressure plate (3) and the right pressure plate (3) are in contact, a sealing cavity (3002) is formed between all the pressure plates (3) and the gas pipeline (4).

6. A hydrogen leak monitoring device for a hydrogen production station according to claim 5, characterized in that, A sealing gasket is provided at the contact surface between the left pressure plate (3) and the right pressure plate (3).

7. A hydrogen leak monitoring device for a hydrogen production station according to claim 6, characterized in that, It also includes a gas storage chamber (301); several gas storage chambers (301) are fixed on the fixed frame (1); the gas storage chamber (301) stores high-pressure neutralizing gas; several exhaust holes (3003) are opened on each pressure plate (3); and a pH sensor is installed on each pressure plate (3).

8. A hydrogen leak monitoring device for a hydrogen production station according to claim 7, characterized in that, Several vent holes (3003) are arranged in a ring on the inner wall of the pressure plate (3), and the vent holes (3003) are aligned with the connection of two adjacent flanges (4001).

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