A leak detection device for natural gas hydrogen blending pipeline

Abstract

The invention discloses a leakage detection device for a natural gas hydrogen-blended pipeline, relates to the technical field of natural gas pipelines, and comprises: a pipeline A and a pipeline B, wherein one side of the pipeline A is fixedly connected with the pipeline B; the leakage detection device for the natural gas hydrogen-blended pipeline comprises: an auxiliary protection positioning component, a leakage fixed-point detection component, and a stable operation protection component, wherein the auxiliary protection positioning component, the leakage fixed-point detection component, and the stable operation protection component are on the same axis, and through the arrangement of an electric control connecting rod, in addition to being able to move an upper buckled arc plate and a lower buckled arc plate on the pipeline A during the rotation of a wheel cavity indirectly connected to an arc-shaped electric control clamp; the electric control connecting rod can also provide length support when the leakage fixed-point detection component needs to be transferred from the pipeline A to the pipeline B, and at the same time, the electric control connecting rod can also be used as a support rod under the control of a general controller of the device when the wind and sand are strong, so as to stabilize the connection between the pipeline A and the pipeline B.

Description

Technical Field

[0001] The invention relates to the technical field of natural gas pipelines, and in particular to a leakage detection device for a natural gas hydrogen-blended pipeline. Background Art

[0002] In the production, storage and transportation of natural gas mixed with hydrogen, pipeline leakage is a serious problem that needs to be solved urgently. Due to the special temperature, pressure environment and complex catalytic conditions of the pipeline, the risk of leakage is significantly increased. Once a leak occurs, it is not only difficult to quickly and accurately locate the leak, but also if it is not handled in time, the leaked gas will cause a series of serious consequences, including but not limited to environmental pollution, fire outbreaks, and poisoning of personnel.

[0003] Traditional gas detection methods have many limitations. Common gas detectors can only detect the occurrence of gas leaks, but it is difficult to accurately point out the specific location of the leak. This forces detection personnel to spend a lot of time and energy to gradually check based on the gradual change in gas concentration, which is extremely inefficient. Moreover, existing detection equipment often has a single function and cannot immediately perform auxiliary pretreatment to seal the leak point after detecting a leak, thereby failing to effectively curb the spread of harm caused by the leak.

[0004] Furthermore, pipelines face many challenges in actual operation. The high temperature and high pressure environment causes the pipeline materials to age and corrode faster, thereby increasing the possibility of leakage. The erosion of chemically corrosive substances and impurities on the pipeline surface will weaken the strength of the pipeline and reduce its sealing. At the same time, severe weather conditions, such as strong winds, thunderstorms and other extreme climates, will also have an impact on the stability of the pipeline, further exacerbating the risk of leakage.

[0005] In view of this, there is an urgent need for a leak detection device for natural gas hydrogen-blended pipelines. It should have comprehensive functions such as mobile detection, fixed-point detection on the move, sealing pretreatment in case of leakage, maintenance of pipeline surface on the move, adaptation to severe weather and stabilization of pipelines, so as to effectively improve the efficiency and safety of pipeline leak detection and treatment, and solve the above problems. Summary of the invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose a leakage detection device for a natural gas hydrogen-blended pipeline, which can perform mobile detection; can perform fixed-point detection while moving; can perform sealing pretreatment on the leakage location when detection is found; can maintain the pipeline surface while moving; and can stabilize the pipeline in severe weather, such as in sandy areas, so as to solve the problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a leakage detection device for a natural gas hydrogen-blended pipeline, comprising: a pipeline A and a pipeline B, wherein one side of the pipeline A is fixedly connected to the pipeline B; the leakage detection device for the natural gas hydrogen-blended pipeline also comprises: an auxiliary protection positioning component, a leakage fixed-point detection component, and a stable operation protection component, wherein the auxiliary protection positioning component, the leakage fixed-point detection component, and the stable operation protection component are on the same axis; the auxiliary protection positioning component comprises an inner sleeve body and an outer plug-in component, wherein the outer plug-in component is plug-inly sleeved on the inner sleeve body; the leakage fixed-point detection component comprises an electrically controlled screw; and the stable operation protection component comprises an electrically controlled connecting rod.

[0008] Preferably, the auxiliary protection positioning assembly also includes an arc-shaped electric-controlled clamp clamped on the pipe A, and a fixing plate is equidistantly fixedly connected to the inner ring cavity wall of the arc-shaped electric-controlled clamp, and a side wall of the fixing plate is fixedly connected to a driven arc body, and the end of the driven arc body away from the fixed plate is rotatably connected to a wheel cavity, and the side of the wheel cavity away from the driven arc body is rotatably connected to an arc tube, and the arc tube is fixed on another fixing plate, and through holes are equidistantly opened on the arc tube, and the inner sleeve is fixed in the inner cavity of the wheel cavity.

[0009] Preferably, a first through air inlet strip is provided on the inner sleeve, and a second through air inlet strip is provided on the outer connector.

[0010] Preferably, a return spring body is fixedly connected to the inner cavity of the outer connector, and one fixed end of the return spring body away from the outer connector is fixedly connected to the inner cavity wall of the inner sleeve, and a one-way air valve is fixedly connected to the inner sleeve.

[0011] Preferably, an upper buckled arc plate and a lower buckled arc plate are symmetrically buckled on the surface of the pipe A, a first sealing gasket is fixedly connected to the inner ring wall of the upper buckled arc plate, a second sealing gasket is fixedly connected to the inner ring wall of the lower buckled arc plate, the electric control screw is symmetrically arranged on the upper buckled arc plate, and the electric control connecting rod is arranged at the bottom of the lower buckled arc plate.

[0012] Preferably, a first air outlet channel is provided on the upper buckled arc plate, and a second air outlet channel is provided on the lower buckled arc plate.

[0013] Preferably, the inner cavity of the wheel cavity is connected with the through hole on the arc tube through an air flow channel.

[0014] Preferably, a rubber gasket is provided at the bottom end of the external connector, and the rubber gasket can be specifically implemented as a nitrile rubber gasket.

[0015] Preferably, the inner cavity diameter after the upper buckling arc plate and the lower buckling arc plate are buckled together is greater than the outer diameter of the pipeline A.

[0016] Preferably, the inner diameter of the first tuyere channel is set to gradually decrease from left to right, the inner diameter of the second tuyere channel is set to gradually increase from left to right, and the first tuyere channel and the second tuyere channel are symmetrically arranged.

[0017] Compared with the prior art, the present invention provides a leakage detection device for a natural gas hydrogen-blended pipeline, which has the following beneficial effects: 1. Through the arrangement of the electrically-controlled connecting rod, in addition to being able to move the upper buckled arc plate and the lower buckled arc plate on the pipeline A during the rotation of the wheel cavity indirectly connected to the arc-shaped electrically-controlled clamp; the electrically-controlled connecting rod can also provide length support when the leakage fixed-point detection component needs to be transferred from pipeline A to pipeline B, thereby bypassing the more protruding connection between pipeline A and pipeline B.

[0018] At the same time, the electric-controlled connecting rod can also be used as a supporting rod under the control of the device's main controller when the wind and sand are strong, so as to stabilize the connection between pipeline A and pipeline B. That is, the electric-controlled connecting rod plays multiple roles. It can not only assist the device in transferring between different pipelines, but also be transformed into a supporting rod to stabilize the pipeline in bad weather. This design breaks through the limitation of the single function of components in the existing technology, reduces maintenance costs, and improves the adaptability and stability of the device in complex environments.

[0019] 2. Through the coordinated work of the auxiliary protection positioning component, the leakage fixed point detection component and the stable operation protection component, the gas detection sensor installed on the inner wall of the upper buckled arc plate can realize all-round and high-precision leakage detection of the natural gas hydrogen-blended pipeline. Different from the single function and low efficiency of traditional detection devices, this device can quickly locate the leakage point and deal with the leakage in time, effectively improving the efficiency and safety of pipeline leakage detection and treatment.

[0020] At the same time, this buckling method in which the upper buckling arc plate and the lower buckling arc plate are symmetrically buckled on the pipeline can effectively enable the rotation of the electric control screw so that it can be tightly buckled to form a closed space with the assistance of the first sealing gasket and the second sealing gasket when a leak is detected, thereby realizing sealing pretreatment of the leakage point. This is completely different from the situation where the existing detection equipment cannot deal with the leak in time after detection, which significantly reduces the harm caused by the leak and enhances the safety of pipeline operation.

[0021] 3. Based on the special shape design of the change in the inner diameter size of the first air outlet channel and the second air outlet channel, based on the Bernoulli principle, the air flow speed passing therethrough can be adjusted, that is, the air flow speed around the upper buckled arc plate and the lower buckled arc plate can be adjusted. Under the natural air pressure law, the gas will move from the high air pressure to the low air pressure. At this time, when the gas flow rate is changed, with the assistance of the atmospheric pressure, the upper buckled arc plate and the lower buckled arc plate will be closer to the pipeline, thereby enhancing the tightness of the sealing gasket; at the same time, the air flowing through the first air outlet channel and the second air outlet channel will take away the temperature of the device and the surface of the pipeline, thereby improving the heat dissipation effect.

[0022] Furthermore, due to the presence of the upper buckled arc plate and the first air outlet channel and the second air outlet channel on the lower buckled arc plate, the overall coordination is similar to a thermos cup, which can improve the thermal insulation capacity of the pipeline. That is, the above-mentioned overall design overcomes the defects of the prior art that the pipeline is easily affected by temperature changes in terms of heat dissipation and thermal insulation, thereby ensuring the stability and safety of the pipeline operation.

[0023] 4. By setting an external connector with a rubber gasket, the friction can be increased when the wheel cavity is driven by the motor on the driving arc body to move on the pipeline A, thereby improving the movement stability of the wheel cavity; at the same time, under the setting of the external connector, the external connector and the inner sleeve can cooperate to indirectly generate gas during movement. The ingenious cooperation between the wheel cavity and the external connector can enable the external connector to generate airflow and clean and dry the pipeline surface through the through holes on the arc tube; this design structure is different from the simple mobile detection method in the prior art, and can effectively remove impurities and water vapor on the pipeline surface during mobile detection, reduce the risk of corrosion, and increase the service life of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is the main structure diagram of the present invention.

[0025] Figure 2 This is a related structural diagram after cutting of the arc-shaped electric-controlled clamping claw in the auxiliary protection positioning assembly of the present invention.

[0026] Figure 3 This is a distribution diagram of the positions of the related structures such as the driving arc body, wheel cavity, and arc tube in the present invention.

[0027] Figure 4 This is a related structural diagram of the auxiliary protection positioning component of the present invention when it is working.

[0028] Figure 5 For the present invention Figure 4 A partial enlarged view of the structure at point A in the middle.

[0029] Figure 6 This is a distribution diagram of the positions of the inner sleeve, outer connectors and other related structures of the wheel cavity of the present invention during the moving process.

[0030] Figure 7 This is a diagram showing the relevant structures of the upper buckled arc plate and the first sealing gasket after cutting in the present invention.

[0031] Figure 8 This is a structural diagram related to the protection of the overall device of the present invention.

[0032] Fig. 9 It is a process diagram of the overall device of the present invention being transferred from pipeline A to pipeline B when performing fixed-point detection.

[0033] Fig.10 It is a related structural diagram of the belt drive arc body, wheel cavity body and arc tube in the present invention.

[0034] Fig.11 This is a process diagram of transferring the entire device from pipeline A to pipeline B in the present invention.

[0035] In the figure: 1. Pipeline A; 2. Pipeline B.

[0036] 3. Auxiliary protection positioning assembly; 301. Arc-shaped electric-controlled clamp; 302. Fixed plate; 303. Driven arc body; 304. Wheel cavity; 305. Arc tube; 306. Through hole; 307. Inner sleeve; 308. First air inlet strip; 309. External connector; 310. Second air inlet strip; 311. Reset spring body; 312. One-way air valve.

[0037] 4. Leakage fixed-point detection assembly; 401. Upper buckled arc plate; 402. First sealing gasket; 403. Electric control screw; 404. Lower buckled arc plate; 405. Second sealing gasket.

[0038] 5. Stable operation protection component; 501. Electric control connecting rod; 502. First air outlet channel; 503. Second air outlet channel. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0041] Example: Please refer to Figures 1 to 6 , Fig.10As shown: In order to solve the problem mentioned in the technical solution, an embodiment of the present application provides a leakage detection device for a natural gas hydrogen-blended pipeline, including: a pipeline A1 and a pipeline B2, one side of the pipeline A1 is fixedly connected to the pipeline B2; the leakage detection device for the natural gas hydrogen-blended pipeline includes: an auxiliary protection positioning component 3, a leakage fixed-point detection component 4, and a stable operation protection component 5, and the auxiliary protection positioning component 3, the leakage fixed-point detection component 4, and the stable operation protection component 5 are on the same axis.

[0042] The auxiliary protection positioning component 3 includes an inner sleeve 307 and an outer connector 309, the outer connector 309 is plugged into the inner sleeve 307, and the auxiliary protection positioning component 3 also includes an arc-shaped electric-controlled clamp 301 clamped on the pipe A1, and a fixed plate 302 is fixedly connected to the inner ring cavity wall of the arc-shaped electric-controlled clamp 301 at an equal distance, and a side wall of the fixed plate 302 is fixedly connected to a belt-driven arc body 303, and the end of the belt-driven arc body 303 away from the fixed plate 302 is rotatably connected to the wheel cavity 304, and the side of the wheel cavity 304 away from the belt-driven arc body 303 is rotatably connected to the wheel cavity 304. Arc tube 305, arc tube 305 is fixed on another fixed plate 302, through holes 306 are equidistantly provided on arc tube 305, inner sleeve 307 is fixed on the inner cavity of wheel cavity 304, a through first air inlet strip 308 is provided on inner sleeve 307, a through second air inlet strip 310 is provided on outer connector 309, a return spring body 311 is fixedly connected to the inner cavity of outer connector 309, a fixed end of return spring body 311 away from the outer connector 309 is fixedly connected to the inner cavity wall of inner sleeve 307, and a one-way air valve 312 is fixedly connected to the inner sleeve 307.

[0043] Wherein: pipeline A1 and pipeline B2 are fixedly connected by fixing parts such as bolts.

[0044] The auxiliary protection positioning component 3 is mainly used to assist the leakage fixed-point detection component 4 to move to a fixed position, and to assist the stable operation protection component 5 to stabilize the pipeline A1 and the pipeline B2 in bad weather to prevent the connection between the pipeline A1 and the pipeline B2 from loosening, resulting in gas leakage in the pipeline.

[0045] The belt drive arc 303 drive may be implemented as a motor.

[0046] The inner cavity of the wheel cavity 304 is precisely connected to the through hole 306 on the arc tube 305 through a specific airflow channel, ensuring that the airflow generated when the wheel cavity 304 rotates can be smoothly transmitted to the through hole 306, effectively treating the surface of the pipeline A1, removing impurities, drying water vapor, and preventing corrosion.

[0047] When the first air inlet opening 308 and the second air inlet opening 310 are in an overlapping state, gas can enter the inner cavity formed by the inner sleeve 307 and the outer connector 309. When the outer connector 309 moves into the inner sleeve 307, they no longer overlap, and the original gas will be squeezed out from the one-way air valve 312 at the top of the inner sleeve 307.

[0048] A rubber gasket is provided at the bottom end of the external connector. The rubber gasket can be specifically implemented as a nitrile rubber gasket, which can increase the contact friction with the surface of the pipe A1, is elastic, and can be adaptively adjusted with pressure changes to ensure stable movement of the wheel cavity 304.

[0049] For further examples, please refer to Figure 1 , Figure 2 , Fig. 9 , Fig.11 As shown: the leakage fixed-point detection component 4 includes an electrically controlled screw 403, an upper buckled arc plate 401 and a lower buckled arc plate 404 are symmetrically buckled on the surface of the pipeline A1, a first sealing gasket 402 is fixedly connected to the inner ring wall of the upper buckled arc plate 401, and a second sealing gasket 405 is fixedly connected to the inner ring wall of the lower buckled arc plate 404, the electrically controlled screw 403 is symmetrically arranged on the upper buckled arc plate 401, and the electrically controlled connecting rod 501 is arranged at the bottom of the lower buckled arc plate 404.

[0050] Among them: the leakage fixed-point detection component 4 is mainly used for fixed-point detection of pipeline leakage in pipeline A1, and is transferred to pipeline B2 with the assistance of the auxiliary protection positioning component 3 to perform fixed-point detection of pipeline leakage on pipeline B2.

[0051] For further examples, please refer to Figure 1 , Figure 7 , Figure 8 As shown: the stable operation protection component 5 includes an electric control connecting rod 501, a first air outlet channel 502 is opened on the upper buckling arc plate 401, and a second air outlet channel 503 is opened on the lower buckling arc plate 404.

[0052] The electric control connecting rod 501 is mainly used to change the position of the connecting parts, so as to perform functions such as auxiliary connection or support stability in different scenarios.

[0053] The inner cavity shape of the first air outlet channel 502 is set to change from large to small, and the inner cavity shape of the second air outlet channel 503 is set to change from small to large, and the first air outlet channel 502 and the second air outlet channel 503 are symmetrically arranged, mainly for accelerating air circulation.

[0054] It should be noted that: the arc-shaped electric-controlled clamp 301, the electric-controlled screw 403 and the electric-controlled connecting rod 501 are all controlled by the main controller in the overall device; a gas detection sensor is installed on the inner wall of the upper buckled arc plate 401; the inner cavity diameter after the upper buckled arc plate 401 and the lower buckled arc plate 404 are buckled together is larger than the outer diameter of the pipeline A1, so that space is reserved to adapt to the deformation of the pipeline, a compression margin is provided for the internal sealing gasket, the sealing effect is enhanced, and the installation and maintenance of components such as internal detection sensors are convenient; flow rate sensors for triggering the main controller to change the position of the electric-controlled connecting rod 501 are installed in the first air outlet channel 502 and the second air outlet channel 503.

[0055] The working principles of all the contents in the above embodiments are as follows: in the initial state: the arc-shaped electric-controlled clamp 301 is clamped on the pipe A1, the motor with the driving arc body 303 is not started, the wheel cavity 304 does not rotate on the surface of the pipe A1, no gas is ejected from the through hole 306, the first air inlet strip opening 308 and the second air inlet strip opening 310 are in an overlapping state, the first sealing gasket 402 and the second sealing gasket 405 are not tightly fitted on the outer surface of the pipe A1, and the electric-controlled connecting rod 501 is in a horizontal state.

[0056] The following is the working process of the auxiliary protection positioning assembly 3: This protection is mainly for the stability protection of the wheel cavity 304 walking on the pipeline, and the protection of the pipeline surface; when in use, the device is started, and the motor on the driving arc 303 drives the wheel cavity 304 to rotate, and the rotating wheel cavity 304 starts to move on the surface of the pipeline A1. During the moving process, please refer to the attached Figure 3 To Attachment Figure 6 Furthermore, the rotating wheel cavity 304 will cause the outer connector 309 on it that contacts the surface of the pipe A1 to move toward the inner sleeve 307 during the extrusion. Since it is known that the first air inlet strip 308 and the second air inlet strip 310 are initially in an overlapping state, the gas can enter the inner cavity composed of the inner sleeve 307 and the outer connector 309. When the outer connector 309 moves toward the inner sleeve 307, they no longer overlap, and the original gas will be squeezed out from the one-way air valve 312 on the top of the inner sleeve 307. As a result, when the wheel cavity 304 moves on the surface of the pipe A1, gas will be discharged from the one-way air valve 312 into the inner cavity of the wheel cavity 304, and the return spring body 311 is in a compressed state at this time.

[0057] Furthermore, as the wheel cavity 304 continues to rotate, the external connector 309 that was originally squeezed will return to its original state under the reset of the originally compressed return spring body 311. Furthermore, in this reciprocating manner, when the wheel cavity 304 moves on the surface of the pipeline A1, a steady stream of gas will enter the wheel cavity 304 from the one-way air valve 312. Furthermore, since it is known that the inner cavity of the wheel cavity 304 and the arc tube 305 are connected, the gas entering the wheel cavity 304 will leak out from the through hole 306 opened on the arc tube 305, thereby cleaning the surface of the pipeline A1.

[0058] Furthermore, by setting up the external connector 309 with a rubber gasket, the friction can be increased when the wheel cavity 304 is driven by the motor on the driving arc body 303 to move on the pipe A1, thereby improving the movement stability of the wheel cavity 304; at the same time, under the setting of the external connector 309, the external connector 309 cooperates with the inner sleeve 307 to indirectly generate gas during movement. The ingenious cooperation between the wheel cavity 304 and the external connector 309 can enable the external connector 309 to generate airflow and clean and dry the surface of the pipe through the through hole 306 on the arc tube 305; this design structure is different from the simple mobile detection method in the prior art, and can effectively remove impurities and water vapor on the surface of the pipe during mobile detection, reduce the risk of corrosion, and increase the service life of the pipe.

[0059] Please refer to the above working process Figures 1 to 6 , Fig.10 .

[0060] The following is the working process of the leakage fixed-point detection component 4: This detection is mainly for fixed-point detection of the device, and when a leak is detected, the leakage is sealed, an early warning is issued, and other actions are taken.

[0061] Furthermore, when leak detection is performed, the leakage fixed-point detection component 4 as a whole will be driven by the auxiliary protection positioning component 3 to move on the surface of the pipe A1 and the pipe B2 to perform fixed-point detection work at a specific position.

[0062] During detection, after the leakage fixed-point detection component 4 is brought to the designated position by the auxiliary protection positioning component 3, the device will start the electric control screw 403. During the rotation of the electric control screw 403, the upper buckled arc plate 401 and the lower buckled arc plate 404 will approach each other. At this time, the first sealing gasket 402 and the second sealing gasket 405 thereon will gradually adhere to the surface of the pipe A1. At this time, with the assistance of the first sealing gasket 402 and the second sealing gasket 405 themselves, the upper buckled arc plate 401 and the lower buckled arc plate 404 will form a closed space with the outer surface of the pipe A1. At this time, if the pipe A1 leaks at this position, the gas sensor arranged on the inner wall of the upper buckled arc plate 401 will detect it, so as to perform early warning notification processing and other work through the master control.

[0063] Furthermore, through the coordinated work of the auxiliary protection positioning component 3, the leakage fixed point detection component 4 and the stable operation protection component 5, the gas detection sensor installed on the inner wall of the upper buckled arc plate 401 can realize all-round and high-precision leakage detection of the natural gas hydrogen-blended pipeline. Different from the single function and low efficiency of traditional detection devices, this device can quickly locate the leakage point and deal with the leakage in time, effectively improving the efficiency and safety of pipeline leakage detection and treatment.

[0064] At the same time, the symmetrical buckling mode of the upper buckling arc plate 401 and the lower buckling arc plate 404 on the pipeline can effectively enable the rotation of the electric control screw 403 so that it can be tightly buckled to form a closed space with the assistance of the first sealing gasket 402 and the second sealing gasket 405 when a leak is detected, thereby realizing the sealing pretreatment of the leakage point. This is completely different from the situation where the existing detection equipment cannot deal with the leakage in time after detection, which significantly reduces the harm caused by the leakage and enhances the safety of pipeline operation.

[0065] Please refer to the above working process Figure 1 , Figure 2 , Fig. 9 , Fig.11 .

[0066] The following is the working process of the stable operation protection component 5: This stable operation protection is mainly for stabilizing the pipeline A1 and the pipeline B2 during severe weather.

[0067] Furthermore, after the surface inspection and maintenance of the pipe A1 is completed, when it is necessary to transfer to the pipe B2, the arc-shaped electric-controlled clamping claw 301 needs to be released. Specifically, the operator first needs to control the electric-controlled screw 403 through the main controller to temporarily release the upper buckled arc plate 401 and the lower buckled arc plate 404. Figure 1 First, the arc-shaped electric-controlled clamping claw 301 near the end of the pipe B2 in the whole device is released through the main controller in the device. Then, under the control of the main controller, the driving arc body 303 on the arc-shaped electric-controlled clamping claw 301 far away from the end of the pipe B2 in the whole device is driven to indirectly move the arc-shaped electric-controlled clamping claw 301 on the pipe A1 toward the direction close to the pipe B2 during the rotation of the wheel cavity 304. At this time, the released arc-shaped electric-controlled clamping claw 301 near the end of the pipe B2 will move from the position of the pipe A1 to the position of the pipe B2. Further, under the main controller, the released arc-shaped electric-controlled clamping claw 301 can be clamped on the pipe B2 with the assistance of the electric-controlled connecting rod 501. For details, please refer to Fig. 9 Then, through similar steps to the above, another arc-shaped electrically controlled clamp 301 is controlled to clamp on the pipe B2, and then the electrically controlled screw 403 is controlled again to make the upper buckling arc plate 401 and the lower buckling arc plate 404 buckle tightly.

[0068] Furthermore, if strong winds or thunderstorms occur, the flow rate sensors installed in the first vent channel 502 and the second vent channel 503 that change the position of the electric control connecting rod 501 will be activated. At this time, the main controller will control the arc-shaped electric control clamp 301 to release the clamping work on the surface of the pipeline, and then control the electric control connecting rod 501 to change from a horizontal state to a vertical state, so that the arc-shaped electric control clamp 301 at one end is attached to the ground, thereby providing support for the pipeline and stabilizing the pipeline.

[0069] Furthermore, through the setting of the electric-controlled connecting rod 501, in addition to being able to move the upper buckled arc plate 401 and the lower buckled arc plate 404 on the pipe A1 during the rotation of the wheel cavity 304 indirectly connected to the arc-shaped electric-controlled clamp 301; the electric-controlled connecting rod 501 can also provide length support when the leakage fixed-point detection component 4 needs to be transferred from the pipe A1 to the pipe B2, so as to bypass the more protruding connection between the pipe A1 and the pipe B2.

[0070] At the same time, the electrically controlled connecting rod 501 can also be used as a supporting rod under the control of the device's main controller when the wind and sand are strong, so as to stabilize the connection between pipeline A1 and pipeline B2. That is, the electrically controlled connecting rod 501 plays multiple roles. It can not only assist the device in transferring between different pipelines, but also be transformed into a supporting rod to stabilize the pipeline in bad weather. This design breaks through the limitation of the single function of components in the prior art, reduces maintenance costs, and improves the adaptability and stability of the device in complex environments.

[0071] Furthermore, based on the special shape design of the change in the inner diameter size of the first air outlet channel 502 and the second air outlet channel 503, based on the Bernoulli principle, the air flow speed passing therethrough can be adjusted, that is, the air flow speed around the upper snap-fit ​​arc plate 401 and the lower snap-fit ​​arc plate 404 can be adjusted. Under the natural air pressure law, the gas will move from places with high air pressure to places with low air pressure. At this time, when the gas flow rate is changed, with the assistance of atmospheric pressure, the upper snap-fit ​​arc plate 401 and the lower snap-fit ​​arc plate 404 will be closer to the pipeline, thereby enhancing the tightness of the sealing gasket; at the same time, the air flowing through the first air outlet channel 502 and the second air outlet channel 503 will take away the temperature of the device and the surface of the pipeline, thereby improving the heat dissipation effect.

[0072] Furthermore, due to the presence of the first air outlet channel 502 and the second air outlet channel 503 on the upper buckled arc plate 401 and the lower buckled arc plate 404, the overall coordination is similar to that of a thermos cup, which can improve the thermal insulation capacity of the pipeline. That is, the above-mentioned overall design overcomes the defects of the prior art that the pipeline is easily affected by temperature changes in terms of heat dissipation and thermal insulation, thereby ensuring the stability and safety of the pipeline operation.

[0073] Please refer to the above working process Figure 1 , Figure 7 , Figure 8 .

[0074] Summary: Through the effective cooperation of the auxiliary protection positioning component 3, the leakage fixed point detection component 4, and the stable operation protection component 5, they can be used in conjunction with each other in pipeline gas leakage detection to carry out multi-faceted and multi-broad detection processing and corresponding maintenance work of the auxiliary detection processing.

[0075] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0076] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A leakage detection device for a natural gas hydrogen-blended pipeline, comprising: A pipeline A (1) and a pipeline B (2), wherein one side of the pipeline A (1) is fixedly connected to the pipeline B (2); the leakage detection device for a natural gas hydrogen-blended pipeline further comprises: an auxiliary protection positioning component (3), a leakage fixed-point detection component (4), and a stable operation protection component (5); the auxiliary protection positioning component (3), the leakage fixed-point detection component (4), and the stable operation protection component (5) are located on the same axis; the auxiliary protection positioning component (3) comprises an inner sleeve (307) and an outer plug-in component (309), and the outer plug-in component (309) is plug-sleeved on the inner sleeve (307); the leakage fixed-point detection component (4) comprises an electrically controlled screw (403); and the stable operation protection component (5) comprises an electrically controlled connecting rod (501); The auxiliary protection positioning assembly (3) further comprises an arc-shaped electrically controlled clamping jaw (301) clamped on the pipe A (1); a fixing plate (302) is fixedly connected to the inner ring cavity wall of the arc-shaped electrically controlled clamping jaw (301) at equal intervals; a driving arc body (303) is fixedly connected to one side wall of the fixing plate (302); an end of the driving arc body (303) away from the fixing plate (302) is rotatably connected to a wheel cavity (304); a side of the wheel cavity (304) away from the driving arc body (303) is rotatably connected to an arc tube (305); the arc tube (305) is fixed to another fixing plate (302); through holes (306) are opened on the arc tube (305) at equal intervals; and the inner sleeve (307) is fixed to the inner cavity of the wheel cavity (304); The inner casing (307) is provided with a first air inlet opening (308) extending therethrough, and the outer connector (309) is provided with a second air inlet opening (310) extending therethrough; A return spring body (311) is fixedly connected to the inner cavity of the outer plug-in component (309); a fixed end of the return spring body (311) away from the outer plug-in component (309) is fixedly connected to the inner cavity wall of the inner sleeve (307); and a one-way air valve (312) is fixedly connected to the inner sleeve (307); Under the setting of the external connector (309), the external connector (309) cooperates with the inner sleeve (307) to indirectly generate gas during movement, and the wheel cavity (304) cooperates with the external connector (309), so that the external connector (309) can generate airflow and clean and dry the pipeline surface through the through hole (306) on the arc tube (305); When the first air inlet opening (308) and the second air inlet opening (310) are in an overlapping state, gas enters the inner cavity formed by the inner casing (307) and the outer plug-in component (309). When the outer plug-in component (309) moves into the inner casing (307), they no longer overlap, and the original gas is squeezed out from the one-way air valve (312) at the top of the inner casing (307).

2. A leakage detection device for a natural gas hydrogen-blended pipeline according to claim 1, characterized in that: An upper buckled arc plate (401) and a lower buckled arc plate (404) are symmetrically buckled on the surface of the pipe A (1); a first sealing gasket (402) is fixedly connected to the inner ring wall of the upper buckled arc plate (401); a second sealing gasket (405) is fixedly connected to the inner ring wall of the lower buckled arc plate (404); the electric control screw rod (403) is symmetrically arranged on the upper buckled arc plate (401); and the electric control connecting rod (501) is arranged at the bottom of the lower buckled arc plate (404).

3. A leakage detection device for a natural gas hydrogen-blended pipeline according to claim 2, characterized in that: The upper buckled arc plate (401) is provided with a first air outlet channel (502), and the lower buckled arc plate (404) is provided with a second air outlet channel (503).

4. A leakage detection device for a natural gas hydrogen-blended pipeline according to claim 1, characterized in that: The inner cavity of the wheel cavity (304) is connected to the through hole (306) on the arc tube (305) through an air flow channel.

5. A leakage detection device for a natural gas hydrogen-blended pipeline according to claim 1, characterized in that: A rubber gasket is provided at the bottom end of the external connector (309).

6. A leakage detection device for a natural gas hydrogen-blended pipeline according to claim 2, characterized in that: The inner diameter of the upper buckled arc plate (401) and the lower buckled arc plate (404) after buckling is greater than the outer diameter of the pipe A (1).

7. A leakage detection device for a natural gas hydrogen-blended pipeline according to claim 3, characterized in that: The inner diameter of the first air outlet channel (502) is arranged to gradually decrease from left to right, and the inner diameter of the second air outlet channel (503) is arranged to gradually increase from left to right, and the first air outlet channel (502) and the second air outlet channel (503) are arranged symmetrically.

Images