A detection device for gas pipeline leakage traceability

Abstract

This utility model discloses a detection device for tracing leaks in gas pipelines. It includes a pipeline body and an information processor. Detection mechanisms are located at both ends of the pipeline body. Two U-shaped mounting brackets are symmetrically fixed to the surface of each detection mechanism at both ends. A winding motor is fixedly connected to the center of the mounting bracket at the end furthest from the detection mechanism. A steel wire rope connects the detection mechanisms at both ends of the pipeline body, with guide ropes on both sides of the wire rope. A rolling moving mechanism is located on the surface of the pipeline body. When a leak occurs in the pipeline body, the detection mechanisms at both ends detect the time difference of the sound waves to determine the leak location. The moving mechanism moves along the pipeline body, tapping the pipe. The detection body detects the tapping sound, thereby moving the moving mechanism to the leak location in the pipeline body, facilitating rapid source tracing by personnel.

Description

Technical Field

[0001] This utility model relates to the field of gas safety monitoring technology, and in particular to a detection device for tracing the source of gas pipeline leaks. Background Technology

[0002] As a vital infrastructure and a symbol of civilization in modern cities, the safe operation of gas pipeline networks is closely related to the economy, society, and people's livelihoods. In cities, gas pipeline networks intersect or run parallel to other civil / industrial pipelines such as water supply, stormwater and sewage, communications, electricity, and oil and gas, and are also adjacent to underground spaces such as shopping malls, parking lots, and civil defense projects. In the event of a gas leak, the leaked gas often diffuses through interconnected pores or seeps into confined underground spaces through underground fissures, accumulating and easily triggering explosions (at an air concentration of 5%–15%), fires, and poisoning accidents under the influence of external conditions.

[0003] In existing technologies, pipeline acoustic leakage detection systems are typically used to monitor gas pipelines. When a gas pipeline leak is detected, the leak instantly generates sound waves with certain characteristics, which propagate along the medium inside the pipeline to both ends. The on-site data acquisition and processing terminal receives the sound wave signals and transmits them, along with a Beidou / GPS time clock, to the leak detection and positioning server via the network, thereby tracing and locating the leak in the gas pipeline.

[0004] However, the pipeline acoustic leak detection system cannot mark the location of the gas pipeline leak, and staff still need to search for the leak location within a certain range after arriving at the scene. Utility Model Content

[0005] The purpose of this invention is to provide a detection device for tracing gas pipeline leaks. It can use a pipeline acoustic leak detection system to trace the source of gas pipeline leaks when leaks occur, and can also be used in conjunction with the pipeline acoustic leak detection system to mark the leak point of the gas pipeline, making it convenient for staff to quickly trace the source on site.

[0006] To achieve the above objectives, a detection device for tracing gas pipeline leaks is provided, comprising a pipeline body and an information processor. Detection mechanisms are located at both ends of the pipeline body, with the pipeline body passing through the middle of each detection mechanism. The detection mechanisms at both ends of the pipeline body are connected to the information processor via data cables. Two U-shaped mounting brackets are symmetrically fixedly connected to the surfaces of the detection mechanisms at both ends of the pipeline body. A winding motor is fixedly connected to the middle of the end of each mounting bracket furthest from the detection mechanism, and the shaft of the winding motor passes through the mounting bracket and is rotatably connected to it. A steel wire rope is fitted between the detection mechanisms at both ends of the pipeline body. Guide ropes are provided on both sides of the steel wire rope, and the ends of the guide ropes are fixedly connected to the detection mechanisms at both ends of the pipeline body. A rolling moving mechanism is provided on the surface of the pipeline body. The steel wire rope passes through the moving mechanism and is fixedly connected to it. The guide ropes pass through the moving mechanism and are slidably connected to it. This device enables the use of a pipeline acoustic leak detection system to trace the source of gas pipeline leaks and can be used to mark the leak points, facilitating rapid on-site tracing by personnel.

[0007] According to the aforementioned detection device for tracing gas pipeline leaks, the detection mechanism comprises a jacket, an acoustic sensor, a winding drum, and a guide block. Two jackets are symmetrically arranged on the surface of the pipeline body. Bolts are installed in the jackets, and the two jackets are fixedly connected by bolts. The acoustic sensor and the winding drum are both located in the middle of the jacket surface, with the detection end of the acoustic sensor penetrating the jacket and contacting the surface of the pipeline body. A rotating shaft is located in the middle of the winding drum, and the winding drum is rotatably connected to the jacket via the rotating shaft. The winding drum winds up a steel wire rope. The rotating shaft of the winding motor is fixedly connected to the rotating shaft of the winding drum. The guide block is located on the side of the mounting frame away from the acoustic sensor and is fixedly connected to the jacket. The steel wire rope passes through the guide block and is slidably connected to the inner wall of the guide block. The guide rope is fixedly connected to the guide block. The acoustic sensor monitors the leakage sound generated when a gas pipeline leaks on its surface, and the winding drum's winding of the steel wire rope causes the moving mechanism to move on the surface of the gas pipeline.

[0008] According to the aforementioned detection device for tracing gas pipeline leaks, two rubber pads are symmetrically fixedly connected to the inner wall of the jacket, and the rubber pads are in contact with the surface of the pipeline body. The acoustic sensor and the winding drum are both located between the two rubber pads. The rubber pads increase the friction on the jacket surface, preventing the detection mechanism from moving on the gas pipeline surface.

[0009] According to the aforementioned detection device for tracing gas pipeline leaks, the moving mechanism comprises a first connecting block, a second connecting block, striking components, a connecting rod, and a moving wheel. The moving wheel is disposed on the surface of the pipeline body. The first connecting block is fixedly connected to the middle of the end of the moving wheel away from the pipeline body, and a steel wire rope passes through the middle of the first connecting block and is fixedly connected to it. The second connecting block is symmetrically fixedly connected to both sides of the moving wheel, and a guide rope passes through the middle of the second connecting block and is slidably connected to it. The connecting rod is disposed on one side of the moving wheel and is fixedly connected to the moving wheel, rotating together with it. Several striking components are provided and fixedly connected to the surface of the connecting rod, with the end of the striking component away from the connecting rod contacting the surface of the pipeline body. When the moving wheel rotates, it drives the striking components to rotate via the connecting rod, causing the striking components to strike the surface of the gas pipeline, generating a striking sound that is detected by an acoustic sensor. This moves the moving mechanism to the leak location on the gas pipeline surface, facilitating rapid on-site location of the leak by personnel.

[0010] According to the aforementioned detection device for tracing gas pipeline leaks, the striking element comprises a fixed block, a spring, and a striking block. The fixed block is fixedly connected to a connecting rod, the spring is fixedly connected to the end of the fixed block away from the connecting rod, and the striking block is fixedly connected to the end of the spring away from the fixed block. A channel is formed in the striking block, and steel balls roll within the channel. The inertia generated by the movement of the steel balls in the channel, combined with the spring, increases the striking force when the striking block contacts the gas pipeline.

[0011] According to the aforementioned detection device for tracing gas pipeline leaks, a baffle is fixedly connected to the side end of the movable wheel, and the baffle and the striking element are located on the same side of the movable wheel. The baffle is located at the forward end of the movable wheel, and the end of the striking block away from the spring contacts the baffle. The baffle acts as a barrier to the striking block, and in conjunction with the spring force, further increases the striking force of the striking element on the gas pipeline, thus amplifying the striking sound.

[0012] According to the aforementioned detection device for tracing gas pipeline leaks, the end of the striking block furthest from the spring is a semi-cylindrical structure. This semi-cylindrical structure reduces wear caused when the striking block contacts the baffle.

[0013] According to the aforementioned detection device for tracing gas pipeline leaks, the striking block is made of hard rubber. The hard rubber material prevents sparks from being generated when the striking block strikes the gas pipeline.

[0014] The above solution has the following advantages: when a leak occurs in the main body of the pipeline, the detection mechanism at both ends of the pipeline detects the time difference of the sound waves to determine the location of the leak. The moving mechanism moves on the main body of the pipeline to tap the pipeline, and the detection mechanism detects the tapping sound, thereby moving the moving mechanism to the leak point of the pipeline, which facilitates the staff to quickly trace the source.

[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0017] Figure 1 This is a perspective view of a detection device for tracing leaks in gas pipelines according to the present invention;

[0018] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a perspective view of the detection mechanism of a gas pipeline leak tracing detection device according to the present invention;

[0020] Figure 4 This is a perspective view of the moving mechanism of a detection device for tracing gas pipeline leaks according to this utility model;

[0021] Figure 5 This is a front cross-sectional view of the striking component of a detection device for tracing gas pipeline leaks according to this utility model.

[0022] Legend:

[0023] 1. Testing mechanism; 2. Mounting frame; 3. Information processor; 4. Pipe body; 5. Steel wire rope; 6. Guide rope; 7. Rewinding motor; 8. Moving mechanism; 9. Jacket; 10. Bolt; 11. Acoustic sensor; 12. Rewinding drum; 13. Guide block; 14. Rubber pad; 15. First connecting block; 16. Second connecting block; 17. Striking component; 18. Connecting rod; 19. Baffle; 20. Moving wheel; 21. Fixing block; 22. Spring; 23. Channel; 24. Steel ball; 25. Striking block. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-5This utility model discloses a detection device for tracing gas pipeline leaks, comprising a pipeline body 4 and an information processor 3. Detection mechanisms 1 are provided at both ends of the pipeline body 4, and the pipeline body 4 passes through the middle of the detection mechanisms 1. The detection mechanisms 1 at both ends of the pipeline body 4 are connected to the information processor 3 via data cables. The information processor 3 collects and processes the detection information from the acoustic wave sensor 11 and controls the operation of the drive motor. Two U-shaped mounting brackets 2 are symmetrically fixedly connected to the surfaces of the detection mechanisms 1 at both ends of the pipeline body 4. A winding motor 7 is fixedly connected to the middle of the end of the mounting bracket 2 away from the detection mechanism 1, and the shaft of the winding motor 7 passes through it. Mounting bracket 2 is rotatably connected to mounting bracket 2. The winding motor 7 has a rainproof structure. The winding motors 7 on the two detection mechanisms 1 at both ends of the pipe body 4 can rotate in both directions, and the forward and reverse rotation speeds of the winding motors 7 on the two detection mechanisms 1 are the same. A steel wire rope 5 is fitted between the detection mechanisms 1 at both ends of the pipe body 4. Guide ropes 6 are provided on both sides of the steel wire rope 5, and the two ends of the guide ropes 6 are fixedly connected to the detection mechanisms 1 at both ends of the pipe body 4. A rolling moving mechanism 8 is provided on the surface of the pipe body 4. The steel wire rope 5 passes through the moving mechanism 8 and is fixedly connected to the moving mechanism 8. The guide rope 6 passes through the moving mechanism 8 and is slidably connected to the moving mechanism 8.

[0026] The detection mechanism 1 consists of a jacket 9, an acoustic sensor 11, a winding drum 12, and a guide block 13. Two jackets 9 are symmetrically arranged on the surface of the pipe body 4. Bolts 10 are installed in each jacket 9, and the two jackets 9 are fixedly connected by the bolts 10. The acoustic sensor 11 and the winding drum 12 are both located in the middle of the surface of the jacket 9, with the detection end of the acoustic sensor 11 penetrating the jacket 9 and contacting the surface of the pipe body 4. A rotating shaft is located in the middle of the winding drum 12, and the winding drum 12 is rotatably connected to the jacket 9 through the rotating shaft. 12 winds up the wire rope 5. The shaft of the winding motor 7 is fixedly connected to the shaft of the winding drum 12. The guide block 13 is located on the side of the mounting frame 2 away from the acoustic sensor 11, and the guide block 13 is fixedly connected to the jacket 9. The wire rope 5 passes through the guide block 13 and is slidably connected to the inner wall of the guide block 13. The guide rope 6 is fixedly connected to the guide block 13. The acoustic sensor 11 monitors the leakage sound generated when the gas pipeline surface leaks. When the winding drum 12 winds up the wire rope 5, the moving mechanism 8 moves on the surface of the gas pipeline.

[0027] Two rubber pads 14 are symmetrically fixed to the inner wall of the jacket 9, and the rubber pads 14 are in contact with the surface of the pipe body 4. The acoustic sensor 11 and the winding drum 12 are both located between the two rubber pads 14. The rubber pads 14 increase the friction on the surface of the jacket 9, preventing the detection mechanism 1 from moving on the surface of the gas pipeline.

[0028] The moving mechanism 8 consists of a first connecting block 15, a second connecting block 16, a striking element 17, a connecting rod 18, and a moving wheel 20. The moving wheel 20 is located on the surface of the pipe body 4. The first connecting block 15 is fixedly connected to the middle of the end of the moving wheel 20 away from the pipe body 4, and a steel wire rope 5 passes through the middle of the first connecting block 15 and is fixedly connected to the first connecting block 15. The second connecting block 16 is symmetrically fixedly connected to both sides of the moving wheel 20, and a guide rope 6 passes through the middle of the second connecting block 16 and is slidably connected to the second connecting block 16. The connecting rod 18 is located on the moving wheel 20. On one side of the 0, the connecting rod 18 is fixedly connected to the moving wheel 20 and rotates together with the moving wheel 20. Several striking parts 17 are provided and fixedly connected to the surface of the connecting rod 18. The end of the striking part 17 away from the connecting rod 18 contacts the surface of the pipe body 4. When the moving wheel 20 rotates, it drives the striking part 17 to rotate through the connecting rod 18, so that the striking part 17 strikes the surface of the gas pipe and generates a striking sound that triggers the sound wave sensor 11 to detect it. This moves the moving mechanism 8 to the leak point on the surface of the gas pipe, making it easier for staff to quickly find the leak point on site.

[0029] The striking component 17 consists of a fixed block 21, a spring 22, and a striking block 25. The fixed block 21 is fixedly connected to the connecting rod 18. The spring 22 is fixedly connected to the end of the fixed block 21 away from the connecting rod 18. The striking block 25 is fixedly connected to the end of the spring 22 away from the fixed block 21. A channel 23 is provided in the striking block 25, and a steel ball 24 rolls in the channel 23. The inertia generated by the movement of the steel ball 24 in the channel 23, combined with the spring 22, increases the striking force when the striking block 25 contacts the gas pipeline.

[0030] A baffle 19 is fixedly connected to the side end of the movable wheel 20, and the baffle 19 and the striking element 17 are located on the same side of the movable wheel 20. The baffle 19 is located at the forward end of the movable wheel 20, and the end of the striking block 25 away from the spring 22 contacts the baffle 19. The baffle 19 acts as a block for the striking block 25, and the spring force of the spring 22 further increases the striking force of the striking element 17 on the gas pipe, thus increasing the striking sound.

[0031] The end of the striking block 25 away from the spring 22 is a semi-cylindrical structure, which reduces the wear generated when the striking block 25 contacts the baffle 19.

[0032] The striking block 25 is made of hard rubber, which prevents sparks from being generated when the striking block 25 strikes the gas pipe.

[0033] Working principle: When a gas leak occurs on the surface of the main pipe body 4, the acoustic sensors 11 in the two detection mechanisms 1 at both ends of the main pipe body 4 detect the sound of the gas leak. The time difference of the sound waves detected by the detection mechanisms 1 at both ends of the main pipe body 4 is used to confirm the leak point of the main pipe body 4. The time difference of the leak sound detected by the acoustic sensors 11 on the two jackets 9 of the detection mechanism 1 further confirms that the leak point of the main pipe body 4 is located in the upper or lower half. This causes the drive motor to control the corresponding take-up roller to rotate, causing the wire rope 5 to pull the moving mechanism 8 to move on the surface of the main pipe body 4, so that the striking part continuously strikes the surface of the main pipe body 4. When the acoustic sensor 11 detects that the striking sound has reached the leak point, the drive motor stops working, and the moving mechanism 8 stops at the leak point, which makes it easier for the staff to quickly find the leak point.

[0034] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A detection device for gas pipeline leak sourcing, comprising: The pipe body (4) and the information processor (3) are characterized in that a detection mechanism (1) is provided at both ends of the pipe body (4), and the pipe body (4) passes through the middle of the detection mechanism (1). The detection mechanisms (1) at both ends of the pipe body (4) are connected to the information processor (3) via data cables. Two U-shaped mounting brackets (2) are symmetrically fixedly connected to the surfaces of the detection mechanisms (1) at both ends of the pipe body (4). A winding motor (7) is fixedly connected to the middle of the end of the mounting bracket (2) away from the detection mechanism (1), and the shaft of the winding motor (7) passes through the pipe body (4). The mounting bracket (2) is rotatably connected to the mounting bracket (2). The detection mechanisms (1) at both ends of the pipe body (4) are fitted with steel wire ropes (5). Guide ropes (6) are provided on both sides of the steel wire ropes (5), and the two ends of the guide ropes (6) are fixedly connected to the detection mechanisms (1) at both ends of the pipe body (4). The surface of the pipe body (4) is provided with a rolling moving mechanism (8). The steel wire rope (5) passes through the moving mechanism (8) and is fixedly connected to the moving mechanism (8). The guide rope (6) passes through the moving mechanism (8) and is slidably connected to the moving mechanism (8).

2. A detection device for gas pipeline leak tracing according to claim 1, characterized in that, The detection mechanism (1) consists of a jacket (9), an acoustic sensor (11), a winding drum (12), and a guide block (13). The jacket (9) has two jackets symmetrically arranged on the surface of the pipe body (4). The jacket (9) is provided with bolts (10), and the two jackets (9) are fixedly connected by bolts (10). The acoustic sensor (11) and the winding drum (12) are both located in the middle of the surface of the jacket (9), and the detection end of the acoustic sensor (11) penetrates the jacket (9) and contacts the surface of the pipe body (4). The winding drum (12) A rotating shaft is provided in the middle of the device, and the winding drum (12) is rotatably connected to the clamp (9) through the rotating shaft. The winding drum (12) winds up the wire rope (5). The rotating shaft of the winding motor (7) is fixedly connected to the rotating shaft of the winding drum (12). The guide block (13) is located on the side of the mounting frame (2) away from the acoustic sensor (11), and the guide block (13) is fixedly connected to the clamp (9). The wire rope (5) passes through the guide block (13) and is slidably connected to the inner wall of the guide block (13). The guide rope (6) is fixedly connected to the guide block (13).

3. A detection device for gas pipeline leak tracing according to claim 2, characterized in that, The inner wall of the jacket (9) is symmetrically fixed with two rubber pads (14), and the rubber pads (14) are in contact with the surface of the pipe body (4), and the acoustic sensor (11) and the winding drum (12) are both located between the two rubber pads (14).

4. The detection device for gas pipeline leakage tracing according to claim 1, characterized in that, The moving mechanism (8) consists of a first connecting block (15), a second connecting block (16), a striking element (17), a connecting rod (18), and a moving wheel (20). The moving wheel (20) is located on the surface of the pipe body (4). The first connecting block (15) is fixedly connected to the middle of the end of the moving wheel (20) away from the pipe body (4), and a steel wire rope (5) passes through the middle of the first connecting block (15) and is fixedly connected to the first connecting block (15). The second connecting block (16) is symmetrically fixedly connected. On both sides of the moving wheel (20), and the guide rope (6) passes through the middle of the second connecting block (16) and is slidably connected to the second connecting block (16), the connecting rod (18) is located on one side of the moving wheel (20), and the connecting rod (18) is fixedly connected to the moving wheel (20) and rotates together with the moving wheel (20), and the striking part (17) is provided in several and fixedly connected to the surface of the connecting rod (18), and the end of the striking part (17) away from the connecting rod (18) contacts the surface of the pipe body (4).

5. A detection device for gas pipeline leak tracing according to claim 4, characterized in that, The striking component (17) consists of a fixed block (21), a spring (22) and a striking block (25). The fixed block (21) is fixedly connected to the connecting rod (18). The spring (22) is fixedly connected to the end of the fixed block (21) away from the connecting rod (18). The striking block (25) is fixedly connected to the end of the spring (22) away from the fixed block (21). A channel (23) is provided in the striking block (25), and a steel ball (24) rolls in the channel (23).

6. A detection device for gas pipeline leak tracing according to claim 5, characterized in that, A baffle (19) is fixedly connected to the side end of the movable wheel (20), and the baffle (19) and the striking piece (17) are located on the same side of the movable wheel (20). The baffle (19) is located at the forward end of the movable wheel (20), and the end of the striking block (25) away from the spring (22) contacts the baffle (19).

7. A detection device for gas pipeline leak tracing according to claim 6, characterized in that, The end of the striking block (25) away from the spring (22) is a semi-cylindrical structure.

8. A detection device for gas pipeline leak tracing according to claim 6, characterized in that, The striking block (25) is made of hard rubber.

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