Hydrogen conveying pipeline and pipeline leakage monitoring device thereof

Abstract

The invention relates to the technical field of hydrogen conveying pipelines, in particular to a hydrogen conveying pipeline and a pipeline leakage monitoring device thereof.The hydrogen conveying pipeline comprises a pipeline part, the top of the pipeline part is connected with an upper pipeline guide rail through a groove, and the upper pipeline guide rail is provided with an upper pipeline sealing cover, a sealing strip and a bolt part. Efficient and comprehensive pipeline detection is achieved through automatic driving and rotary detection, a real-time charging structure and a detachable structure are arranged, and the continuity, convenience and practicability of detection are improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen delivery pipelines, and in particular to a hydrogen delivery pipeline and a pipeline leakage monitoring device thereof. Background Art

[0002] In the production and use of hydrogen, hydrogen delivery pipes are used to transport hydrogen. Since metal pipes are in contact with hydrogen for a long time, the pipes will absorb hydrogen atoms and become brittle. Therefore, current hydrogen delivery pipes are often made of corrosion-resistant metals, such as stainless steel. Although the current stainless steel hydrogen pipelines are more corrosion-resistant pipes, hydrogen embrittlement will still occur during long-term use. Therefore, it is necessary to regularly inspect the stainless steel hydrogen delivery pipes to find possible cracks in the pipes to avoid hydrogen leakage problems.

[0003] Cracks will first form on the inner wall, and then slowly corrode to form penetrating cracks. Existing detection technology often uses ultrasonic detection. Ultrasonic detection uses an ultrasonic detection probe to contact the pipeline, send ultrasonic waves, and detect the pipeline through the reflection of ultrasonic waves. This type of detection requires manual detection. For the detection of long-distance pipelines, the efficiency of manual operation is very low. At the same time, in complex pipeline systems, technicians usually need to climb to the surface of the pipeline for manual operation. The detection method is not only cumbersome, but also has high requirements on the physical strength and working conditions of the operator, which leads to the current low detection efficiency of stainless steel hydrogen transmission pipes. Summary of the invention

[0004] In order to overcome the above technical problems, the purpose of the present invention is to provide a hydrogen transmission pipeline and a pipeline leakage monitoring device thereof, so as to solve the problem of low detection efficiency of the hydrogen transmission pipe in the current technology mentioned in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydrogen delivery pipeline and a pipeline leakage monitoring device thereof, comprising: a hydrogen delivery pipeline component group and a pipeline detection component group, the hydrogen delivery pipeline component group is used to transport hydrogen, the pipeline detection component group is used to monitor the pipeline, the hydrogen delivery pipeline component group includes a pipeline member, the top of the pipeline member is connected to a pipeline upper guide rail through a groove, the pipeline upper guide rail is provided with a pipeline upper sealing cover, a sealing strip and a bolt member, and the two ends of the pipeline member are connected with end ring members; the pipeline detection component group includes a middle drive assembly, a mobile charging assembly and a detection assembly, the middle drive assembly includes a middle shell, the side of the middle shell is provided with an outer covering guide frame and an inner plate, one end of the inner plate is connected to an end shell, and the interior of the end shell is provided with a drive servo A servo motor, a synchronous belt component 1, a transmission shaft, a synchronous belt component 2 and an upper shaft rod, an inner central control component is installed inside the middle shell, and a limiting bolt is arranged inside the outer covering guide frame; the mobile charging component includes a top charging battery, the bottom of the top charging battery is connected to a charging connector, an upper frame box is arranged outside the charging connector, the bottom of the upper frame box is connected to a power column, and guide wheel parts are rotatably connected on both sides of the upper frame box; the detection component includes a side servo motor, a large gear part and an outer sleeve part are arranged on one side of the side servo motor, a ring frame is arranged on the outside of the outer sleeve part, a wire slip ring and a wire harness 2 are arranged inside the outer sleeve part, one side of the wire slip ring is connected to a wire harness 1, one end of the outer sleeve part is connected to a terminal column, and a sleeve rod 1, an inner rod part and an ultrasonic detection probe are arranged outside the terminal column.

[0006] Preferably: two end rings are provided, and the two end rings are connected to the two ends of the pipe member, a hole for flange connection is opened on the end ring, the sealing cover on the pipe and the guide rail on the pipe are both made of stainless steel, the sealing strip is squeezed between the sealing cover on the pipe and the guide rail on the pipe, and the sealing strip and the guide rail on the pipe are connected by bolts.

[0007] Preferably: the outer covering guide frame, the inner panel and the end shell are each provided with two groups, and the two groups of the outer covering guide frame, the inner panel and the end shell are symmetrically distributed on both sides of the middle shell, the outer covering guide frame is connected to the middle shell, the inner panel is slidably connected to the outer covering guide frame through a slide groove, the limiting bolt is connected to the outer covering guide frame through a threaded hole, and one end of the limiting bolt is in contact with the inner panel.

[0008] Preferably: the driving servo motor is installed inside the end shell, the synchronous belt assembly 1 is connected between the working end of the driving servo motor and the transmission shaft, the transmission shaft is connected to the end shell through a bearing, the synchronous belt assembly 2 is connected between the transmission shaft and the upper shaft rod, the upper shaft rod is connected to the end shell through a bearing, both ends of the upper shaft rod are connected to the driving wheel, the driving wheel is in contact with the guide rail on the pipeline, and the end shell is in contact with the guide rail on the pipeline through a friction pad.

[0009] Preferably: the upper frame box is electrically connected to the charging connector, the guide wheel is in contact with the guide rail on the pipeline, the upper frame box is in contact with the charging connector through a groove, and the power column is used to connect with the middle shell.

[0010] Preferably: the detection components are provided in two groups, and the two groups of detection components are symmetrically distributed on both sides of the middle shell, the side servo motor is connected to the side of the outer covering guide frame through the bracket, the working end of the side servo motor is connected to a gear, and the gear on the working end of the side servo motor is meshed with the large gear part.

[0011] Preferably: the large gear member is fixedly connected to the outer sleeve member through a through hole, one end of the outer sleeve member is connected to a bracket through a bearing, and the bracket is connected to the side of the outer covering guide frame, the other end of the outer sleeve member is fixedly connected to the terminal column, one end of the wiring harness 2 is connected to the wire slip ring, the wiring harness 2 passes through the terminal column and is connected to the ultrasonic detection probe, and the wiring harness 1 passes through the middle shell and the outer covering guide frame and is connected between the wire slip ring and the inner central control component.

[0012] Preferably, the sleeve rod 1 is connected to the end column, the sleeve rod 1 contacts the inner rod through a groove, the inner rod is connected to the sleeve rod 1 by bolts, and the working end of the ultrasonic detection probe contacts the inner wall of the pipe member.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Traditional detection methods require manual operation of ultrasonic detection probes, which has low detection efficiency, especially time-consuming and laborious on long-distance or complex-structured pipelines. This device is equipped with an automatic drive device in the designed pipeline, which can automatically move and rotate the pipeline to perform ultrasonic detection while moving, completing the detection section by section, avoiding the tedious manual operation, greatly improving the detection efficiency and accuracy, and because the mobile detection is carried out in the pipeline, it will not be affected by the external support or installation support frame of the pipeline, and can detect the entire pipeline to achieve the effect of monitoring the pipeline condition;

[0015] 2. The configuration of the mobile charging component and the central control system supports real-time charging, ensuring continuous power supply of the device during long-distance detection inside the pipeline. This design avoids the need to frequently take out the device for charging due to insufficient power, thereby improving the detection efficiency and the overall practicality of the device;

[0016] 3. Most of the mid-drive components, mobile charging components and detection components in the designed pipeline detection component group are detachable structures, which makes it easier to move and transport the detection device, thereby improving the mobility efficiency of the overall detection device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic structural diagram of the overall cross-section of the present invention;

[0019] Figure 3 For the present invention Figure 2 Schematic diagram of the structure at B in the middle;

[0020] Figure 4 It is a structural schematic diagram of the driving component, mobile charging component and detection component of the present invention;

[0021] Figure 5 It is a two-dimensional structural schematic diagram of the driving component, mobile charging component and detection component of the present invention;

[0022] Figure 6 For the present invention Figure 5 Schematic diagram of the cross-sectional structure at the middle BB position;

[0023] Figure 7 It is a cross-sectional structural schematic diagram of the middle driving component and the mobile charging component of the present invention;

[0024] Figure 8 For the present invention Figure 7 The structural diagram at A in the middle;

[0025] Fig. 9 It is a schematic diagram of the overall cross-sectional structure of the detection component position of the present invention;

[0026] Fig.10 It is a schematic diagram of the overall structure of the hydrogen delivery pipeline component assembly of the present invention;

[0027] Fig.11 It is a schematic cross-sectional structural diagram of the entire hydrogen delivery pipeline component assembly of the present invention;

[0028] Fig.12 The figure is a schematic cross-sectional view of the sealing cover, sealing strip and bolt member on the pipeline of the present invention.

[0029] In the figure: 01, hydrogen delivery pipeline component group; 11, pipeline parts; 12, pipeline upper guide rail; 13, pipeline upper sealing cover; 14, sealing strip; 15, bolt parts; 16, end ring parts; 02, pipeline detection component group; 21, middle drive assembly; 211, middle shell; 212, outer cover guide frame; 213, inner plate; 214, end shell; 215, drive servo motor; 216, synchronous belt assembly 1; 217, transmission shaft; 218, synchronous belt assembly 2; 219, upper shaft rod; 2110, Inner central control assembly; 2121, limit bolt; 22, mobile charging assembly; 221, top charging battery; 222, charging connector; 223, upper frame box; 224, power column; 225, guide wheel assembly; 23, detection assembly; 231, side servo motor; 232, large gear assembly; 233, outer sleeve assembly; 234, ring frame; 235, wire slip ring; 236, wiring harness 1; 237, wiring harness 2; 238, end column; 239, sleeve rod 1; 2310, inner rod assembly; 2311, ultrasonic detection probe. DETAILED DESCRIPTION

[0030] See also Figure 1-12, an embodiment provided by the present invention: a hydrogen transmission pipeline and a pipeline leakage monitoring device thereof, comprising: a hydrogen transmission pipeline component group 01 and a pipeline detection component group 02, the hydrogen transmission pipeline component group 01 is used to transport hydrogen, the pipeline detection component group 02 is used to monitor the pipeline, the hydrogen transmission pipeline component group 01 comprises a pipeline member 11, the top of the pipeline member 11 is connected to a pipeline upper guide rail 12 through a groove, the pipeline upper guide rail 12 is provided with a pipeline upper sealing cover 13, a sealing strip 14 and a bolt member 15, and the two ends of the pipeline member 11 are connected with end ring members 16; the pipeline detection component group 02 comprises a middle drive component 21, a mobile charging component 22 and a detection component 23, the middle drive component 21 comprises a middle shell 211, the side of the middle shell 211 is provided with an outer covering guide frame 212 and an inner plate 213, one end of the inner plate 213 is connected to an end shell 214, and the interior of the end shell 214 is provided with a driving servo motor 215, a synchronous belt component 216, a transmission shaft 217, a synchronous belt group The second component 218 and the upper shaft rod 219, the inner central control component 2110 is installed inside the middle shell 211, and the inner limit bolt 2121 is set inside the outer cover guide frame 212; the mobile charging component 22 includes a top charging battery 221, the bottom of the top charging battery 221 is connected to a charging connector 222, and the outer side of the charging connector 222 is provided with an upper frame box 223, the bottom of the upper frame box 223 is connected to a power column 224, and the two sides of the upper frame box 223 are rotatably connected to guide wheel components 225; the detection component 23 includes a side servo motor 231, a large gear part 232 and an outer sleeve part 233 are arranged on one side of the side servo motor 231, a ring frame 234 is arranged on the outside of the outer sleeve part 233, a wire slip ring 235 and a wire harness 2 237 are arranged inside the outer sleeve part 233, one side of the wire slip ring 235 is connected to a wire harness 1 236, one end of the outer sleeve part 233 is connected to a terminal column 238, and a sleeve rod 1 239, an inner rod 2310 and an ultrasonic detection probe 2311 are arranged on the outside of the terminal column 238.

[0031] Two end rings 16 are provided, and the two end rings 16 are connected to the two ends of the pipe member 11. The end rings 16 are provided with holes for flange connection. The pipe sealing cover 13 and the pipe guide rail 12 are both made of stainless steel. The sealing strip 14 is squeezed between the pipe sealing cover 13 and the pipe guide rail 12. The sealing strip 14 and the pipe guide rail 12 are connected by bolts 15.

[0032] The outer covering guide frame 212, the inner plate 213 and the end shell 214 are all provided with two groups, and the two groups of the outer covering guide frame 212, the inner plate 213 and the end shell 214 are symmetrically distributed on both sides of the middle shell 211, the outer covering guide frame 212 is connected to the middle shell 211, the inner plate 213 is slidably connected to the outer covering guide frame 212 through the slide groove, the limiting bolt 2121 is connected to the outer covering guide frame 212 through the threaded hole, and one end of the limiting bolt 2121 contacts the inner plate 213.

[0033] The driving servo motor 215 is installed inside the end housing 214, the synchronous belt assembly 1 216 is connected between the working end of the driving servo motor 215 and the transmission shaft 217, the transmission shaft 217 is connected to the end housing 214 through a bearing, the synchronous belt assembly 218 is connected between the transmission shaft 217 and the upper shaft rod 219, the upper shaft rod 219 is connected to the end housing 214 through a bearing, both ends of the upper shaft rod 219 are connected to the driving wheel, the driving wheel is in contact with the guide rail 12 on the pipeline, and the end housing 214 is in contact with the guide rail 12 on the pipeline through a friction pad.

[0034] The upper frame box 223 and the charging connector 222 are electrically connected, the guide wheel 225 is in contact with the guide rail 12 on the pipeline, the upper frame box 223 and the charging connector 222 are in contact through the groove, and the power column 224 is used to connect with the middle shell 211.

[0035] Two groups of detection components 23 are provided, and the two groups of detection components 23 are symmetrically distributed on both sides of the middle shell 211. The side servo motor 231 is connected to the side of the outer covering guide frame 212 through a bracket. The working end of the side servo motor 231 is connected to a gear, and the gear on the working end of the side servo motor 231 is meshed with the large gear part 232.

[0036] The large gear part 232 is fixedly connected to the outer sleeve part 233 through a through hole, one end of the outer sleeve part 233 is connected to a bracket through a bearing, and the bracket is connected to the side of the outer covering guide frame 212, the other end of the outer sleeve part 233 is fixedly connected to the end column 238, one end of the wiring harness 237 is connected to the wire slip ring 235, the wiring harness 237 passes through the end column 238 and is connected to the ultrasonic detection probe 2311, and the wiring harness 1 236 passes through the middle shell 211 and the outer covering guide frame 212 and is connected between the wire slip ring 235 and the inner central control component 2110.

[0037] The sleeve rod 239 is connected to the end column 238, and the sleeve rod 239 contacts the inner rod 2310 through the groove. The inner rod 2310 is connected to the sleeve rod 239 by bolts. The working end of the ultrasonic detection probe 2311 contacts the inner wall of the pipeline member 11. The inner central control component 2110 includes a signal sending module and a battery. The battery is electrically connected to the drive servo motor 215 and the side servo motor 231, and the battery is electrically connected to the ultrasonic detection probe 2311 through the wiring harness 1 236, the wire slip ring 235 and the wiring harness 2 237. It is mainly used to power these devices. The signal sending module The block is to send the data of the pipeline component 11 detected by the ultrasonic detection probe 2311 to the control panel used by the external operator. The operator judges whether there are cracks in the pipeline component 11 by checking the control panel to achieve the purpose of detection. The power column 224 in the mobile charging component 22 has a power supply wire inside and a stainless steel cylinder with two ends open on the outside. The stainless steel cylinder can be connected to the top of the middle shell 211 through a thread, and the other end of the stainless steel cylinder is rotatably connected to the bottom of the upper frame box 223. When the middle drive component 21 moves, it can drive the mobile charging component 22 to move together.

[0038] Working principle:

[0039] When monitoring the hydrogen delivery pipeline component group 01, the overall device structure is as follows: Figure 1 and Figure 2 The structure shown in FIG. 1 is shown in FIG. 1 , and the hydrogen delivery pipeline component group 01 is in the use state Fig.10 As shown in the state of the pipeline member 11, multiple pipeline members 11 are connected by flanges of end ring members 16 at adjacent positions to form a main body of the hydrogen delivery pipeline. At this time, in the hydrogen delivery pipeline component group 01, the pipeline upper sealing cover 13 is connected to the pipeline upper guide rail 12 by bolt members 15, and the sealing strip 14 is used to ensure the sealing effect between the pipeline upper sealing cover 13 and the pipeline upper guide rail 12 to prevent hydrogen leakage;

[0040] When the pipeline component 11 needs to be maintained and monitored regularly, the middle drive component 21 and the mobile charging component 22 are first assembled, the inner plate 213 is inserted into the outer covering guide frame 212 through the slide groove, and after adjusting to the appropriate position, the limit bolt 2121 is connected to the outer covering guide frame 212 through the threaded hole, and one end of the limit bolt 2121 is in frictional contact with the inner plate 213, and the inner plate 213 and the outer covering guide frame 212 are connected. The end shell 214 is connected to one end of the inner plate 213, and the inner rod 2310 is connected to the sleeve rod 239 by bolts. After the middle drive component 21 and the detection component 23 are connected, the structure formed is as shown in the figure of the specification. Figure 4The structure shown in, after debugging the middle shell 211, the side servo motor 231 and the ultrasonic detection probe 2311 in the middle drive component 21 and the mobile charging component 22 to determine that they can be used, an opening is opened at one end of the conveying pipeline composed of the pipeline component 11, and the detection structure composed of the middle drive component 21 and the detection component 23 is placed in the pipeline component 11. At this time, one of the two upper shafts 219 in the middle drive component 21 contacts the groove of the guide rail 12 on the pipeline, and the other contacts the groove of the pipeline component 11, bypassing the ultrasonic detection probe 2311 and contacting the inner wall of the pipeline component 11, and then starting the side servo motor 231. When the side servo motor 231 is started, it will drive the large gear component 232 to rotate through the working end. The rotation of the large gear component 232 will drive the outer sleeve component 233 and the end column 238 to rotate, thereby driving the ultrasonic detection probe 2311 to rotate in the pipeline component 11, and then controlling the ultrasonic detection probe 2311 to detect the inner wall of the pipeline component 11 all around. The ultrasonic detection probe 2311 will emit ultrasonic waves toward the pipeline component 11 through the working end, through The ultrasonic feedback information is analyzed, and the current status data of the pipeline component 11 is transmitted to the inner central control component 2110 through the wire harness 237 / wire slip ring 235 and the wire harness 1 236. The inner central control component 2110 then sends a signal to the external monitoring panel. The operator can judge the status of the pipeline component 11 at the current position through the detection panel. As the side servo motor 231 rotates, the ultrasonic detection probe 2311 is driven to detect the pipeline component 11 for a full rotation. After one cycle of detection, the driving servo motor 215 in the middle driving component 21 is controlled to start. The driving servo motor 215 starts to drive the upper shaft 219 to rotate through the synchronous belt component 1 216 / transmission shaft 217 / synchronous belt component 218, thereby allowing the middle driving component 21 and the mobile charging component 22 to move forward in the pipeline component 11, so as to detect the pipeline component 11 at the next position. After detecting abnormal data, the external control personnel can operate the control detection device to pause, and then conduct a more detailed inspection of the pipeline component 11 to avoid cracks on the pipeline component 11 that may cause hydrogen leakage.

[0041] Since the entire detection component 23 is powered by the battery in the inner central control component 2110, when the power is insufficient, remove the bolt 15 on the guide rail 12 on the pipeline, and remove the sealing cover 13 on the pipeline from the guide rail 12 on the pipeline. Then, the mobile charging component 22 can be connected to the middle shell 211 through the power column 224 in the mobile charging component 22 to power the battery in the inner central control component 2110, so as to achieve the purpose of charging during the detection and movement of the central drive component 21 and the mobile charging component 22. However, there are some limitations. The mobile charging component 22 can only be moved to power the central drive component 21 and the detection component 23 when there is no hydrogen flowing in the hydrogen transport pipeline component group 01 and when it is in a separate pipeline component 11 for detection and movement. This avoids the situation where the central drive component 21 and the detection component 23 are insufficiently powered during the movement detection in the pipeline component 11, and are inconvenient to be removed from the pipeline component 11, thereby enhancing the practicality of the overall detection device.

Claims

1. A hydrogen transmission pipeline and a pipeline leakage monitoring device thereof, characterized in that: include: A hydrogen delivery pipeline component group and a pipeline detection component group, wherein the hydrogen delivery pipeline component group is used to transport hydrogen, and the pipeline detection component group is used to monitor the pipeline. The hydrogen delivery pipeline component group includes a pipeline member, the top of the pipeline member is connected to a pipeline upper guide rail through a groove, and the pipeline upper guide rail is provided with a pipeline upper sealing cover, a sealing strip and a bolt member, and both ends of the pipeline member are connected to end ring members; The pipeline detection component group includes a middle drive component, a mobile charging component and a detection component. The middle drive component includes a middle shell. The side of the middle shell is provided with an outer cover guide frame and an inner plate. One end of the inner plate is connected to an end shell. The end shell is provided with a driving servo motor, a synchronous belt component 1, a transmission shaft, a synchronous belt component 2 and an upper shaft rod. The inner middle control component is installed inside the middle shell. The inner part of the outer cover guide frame is provided with a limit bolt. The mobile charging assembly includes a top charging battery, the bottom of the top charging battery is connected to a charging connector, an upper frame box is arranged outside the charging connector, the bottom of the upper frame box is connected to a power column, and both sides of the upper frame box are rotatably connected to guide wheels; The detection component includes a side servo motor, a large gear part and an outer sleeve part are provided on one side of the side servo motor, a ring frame is provided on the outside of the outer sleeve part, a wire slip ring and a wire harness 2 are provided on the inside of the outer sleeve part, a wire slip ring is connected to a wire harness 1 on one side, one end of the outer sleeve part is connected to a terminal column, and a sleeve rod 1, an inner rod part and an ultrasonic detection probe are provided on the outside of the terminal column.

2. A hydrogen transmission pipeline and a pipeline leakage monitoring device thereof according to claim 1, characterized in that: The end rings are provided with two and are connected to both ends of the pipe. The end rings are provided with holes for flange connection. The pipe sealing cover and the pipe guide rail are both made of stainless steel. The sealing strip is squeezed between the pipe sealing cover and the pipe guide rail. The sealing strip and the pipe guide rail are connected by bolts.

3. A hydrogen transmission pipeline and a pipeline leakage monitoring device thereof according to claim 1, characterized in that: The outer covering guide frame, the inner panel and the end shell are each provided with two groups, and the two groups of the outer covering guide frame, the inner panel and the end shell are symmetrically distributed on both sides of the middle shell, the outer covering guide frame is connected to the middle shell, the inner panel is slidably connected to the outer covering guide frame through a slide groove, the limiting bolt is connected to the outer covering guide frame through a threaded hole, and one end of the limiting bolt is in contact with the inner plate.

4. A hydrogen transmission pipeline and a pipeline leakage monitoring device thereof according to claim 1, characterized in that: The driving servo motor is installed inside the end shell, the synchronous belt assembly 1 is connected between the working end of the driving servo motor and the transmission shaft, the transmission shaft is connected to the end shell through a bearing, the synchronous belt assembly 2 is connected between the transmission shaft and the upper shaft rod, the upper shaft rod is connected to the end shell through a bearing, both ends of the upper shaft rod are connected to the driving wheel, the driving wheel is in contact with the guide rail on the pipeline, and the end shell is in contact with the guide rail on the pipeline through a friction pad.

5. A hydrogen transmission pipeline and a pipeline leakage monitoring device thereof according to claim 1, characterized in that: The upper frame box is electrically connected to the charging connector, the guide wheel is in contact with the guide rail on the pipeline, the upper frame box is in contact with the charging connector through a groove, and the power column is used to connect with the middle shell.

6. A hydrogen transmission pipeline and a pipeline leakage monitoring device thereof according to claim 1, characterized in that: The detection components are provided in two groups, and the two groups of detection components are symmetrically distributed on both sides of the middle shell, the side servo motor is connected to the side of the outer covering guide frame through the bracket, the working end of the side servo motor is connected to a gear, and the gear on the working end of the side servo motor is meshed with the large gear part.

7. A hydrogen transmission pipeline and a pipeline leakage monitoring device thereof according to claim 1, characterized in that: The large gear part is fixedly connected to the outer sleeve part through a through hole, one end of the outer sleeve part is connected to a bracket through a bearing, and the bracket is connected to the side of the outer covering guide frame, the other end of the outer sleeve part is fixedly connected to the terminal column, one end of the wiring harness 2 is connected to the wire slip ring, the wiring harness 2 passes through the terminal column and is connected to the ultrasonic detection probe, and the wiring harness 1 passes through the middle shell and the outer covering guide frame and is connected between the wire slip ring and the inner central control component.

8. A hydrogen transmission pipeline and a pipeline leakage monitoring device thereof according to claim 1, characterized in that: The sleeve rod 1 is connected to the end column, the sleeve rod 1 contacts the inner rod through the groove, the inner rod is connected to the sleeve rod 1 through bolts, and the working end of the ultrasonic detection probe contacts the inner wall of the pipeline.

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