Leak detection device suitable for gas pipeline

Abstract

The utility model discloses a leak detection device suitable for a gas pipeline. The leak detection device comprises an upper semicircular leak detection part, a lower semicircular leak detection part, a grasping part and an opening and closing part, the structures of the upper semicircular leak detection part and the lower semicircular leak detection part are completely the same; the grasping part is arranged between the same ends of the upper semicircle leak detection part and the lower semicircle leak detection part, and the opening and closing part is arranged between the other ends of the upper semicircle leak detection part and the lower semicircle leak detection part. According to the utility model, the leak detection efficiency of the gas pipeline is improved, and the production safety is improved.

Description

Technical Field

[0001] The utility model relates to a leak detection device, in particular to a device capable of efficiently locating the leakage point of a gas pipeline, belonging to the technical field of gas pipeline leak detection equipment. Background Technique

[0002] Gas pipelines are an important means for transporting gas in the metallurgical industry. Through gas pipelines, gas can be transported to various designated locations. Among them, during the use of gas pipelines, due to natural wear and self-aging, etc., the gas pipelines leak. Gas leaks from the leakage point of the pipeline. If the gas leakage is not detected in time, production accidents will occur. Therefore, it is necessary to regularly detect the side wall of the coal conveying pipeline; at present, for the leakage detection of gas pipelines, it is to manually hold a gas concentration meter and move along the gas pipeline to detect the gas pipeline. During this process, a single gas concentration meter cannot accurately and quickly locate the leakage point, and there is a situation of missed detection, which cannot meet the requirements of gas leakage detection; therefore, a device that can assist workers to accurately locate the leakage point on the gas pipeline efficiently is needed to improve the efficiency and accuracy of gas pipeline detection and ensure production safety. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a leak detection device suitable for gas pipelines, which can accurately and quickly locate the leakage point position of the gas pipeline.

[0004] The problems of the utility model are solved by the following technical solutions:

[0005] A leak detection device suitable for gas pipelines includes an upper semi-circular leak detection part, a lower semi-circular leak detection part, a gripping part and an opening and closing part; the structures of the upper semi-circular leak detection part and the lower semi-circular leak detection part are completely the same; the gripping part is arranged between the same ends of the upper semi-circular leak detection part and the lower semi-circular leak detection part, and the opening and closing part is arranged between the other ends of the upper semi-circular leak detection part and the lower semi-circular leak detection part.

[0006] For the above-mentioned leak detection device suitable for gas pipelines, the upper semi-circular leak detection part includes a semi-circular plate, warning lights, a leak detection mechanism and a positioning mechanism; a plurality of warning lights are evenly arranged on the circumferential outer wall of the semi-circular plate, and the signal input end of the warning light is connected to the signal output end of the CPU; the leak detection mechanism and the positioning mechanism are both arranged on the semi-circular plate.

[0007] The above-mentioned leak detection device applicable to gas pipelines, wherein a semi-circular groove is provided on the circumferential inner wall of the semi-circular plate; the leak detection mechanism includes a plurality of first gas concentration detectors, and a plurality of holes are uniformly provided on the inner wall of the semi-circular groove of the semi-circular plate, and a first gas concentration detector is provided in each hole, and the signal output end of the first gas concentration detector is connected to the signal input end of the CPU.

[0008] The above-mentioned leak detection device applicable to gas pipelines, wherein the positioning mechanism includes an arc-shaped slider and an arc-shaped moving member; the arc-shaped slider is slidably arranged in the semi-circular groove of the semi-circular plate; the arc-shaped moving member is arranged on the side wall of the semi-circular plate and is connected to the arc-shaped slider; a hole is provided on the outer side wall of the arc-shaped slider, and a second gas concentration detector is provided in the hole of the arc-shaped slider, and the signal output end of the second gas concentration detector is connected to the signal input end of the CPU.

[0009] The above-mentioned leak detection device applicable to gas pipelines, wherein the arc-shaped moving member includes a semi-circular rack, a sliding piece, a servo motor and a driving gear; a semi-circular hole is provided on the side wall of the semi-circular plate, and the semi-circular hole communicates with the semi-circular groove on the inner wall of the semi-circular plate; the sliding piece is located on the side wall of the semi-circular plate, and a support rod is provided thereon, and the support rod passes through the semi-circular hole on the side wall of the semi-circular plate and is connected to the arc-shaped slider; the servo motor is arranged on the sliding piece, and a driving gear is provided on its output shaft; the semi-circular rack is arranged on the side wall of the semi-circular plate, and the driving gear is meshed and driven on the semi-circular rack; the signal input end of the servo motor is connected to the signal output end of the CPU.

[0010] The above-mentioned leak detection device applicable to gas pipelines, wherein the grasping part includes a long handle and a connecting plate; the long handle is arranged at the end of the semi-circular plate of the lower semi-circular leak detection part, and the connecting plate is arranged at the end of the semi-circular plate of the upper semi-circular leak detection part; threaded holes are provided at one ends of the long handle and the connecting plate close to the semi-circular plate, and bolts pass through the threaded holes of the long handle and the connecting plate at the same time.

[0011] The above-mentioned leak detection device applicable to gas pipelines, wherein the opening and closing part includes a first short plate, a second short plate and a hinge seat; the first short plate is arranged at the end of the semi-circular plate of the lower semi-circular leak detection part away from the long handle; the hinge seat is arranged on the first short plate; the second short plate is arranged at the end of the semi-circular plate of the upper semi-circular leak detection part away from the connecting plate, and the second short plate and the hinge seat form a hinged connection mechanism.

[0012] The utility model detects whether the gas pipeline leaks through the leak detection mechanism, quickly locates the leak point on the gas pipeline through the positioning mechanism, thereby facilitating the staff to quickly repair the leak point of the gas pipeline, reducing the gas leakage amount and ensuring the production safety. Description of the Drawings

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the utility model.

[0014] The list of each label in the figure is as follows: 1. Semi-circular plate, 2. Warning light, 3. Arc slider, 4. Semi-circular rack, 5. Slide piece, 6. Servo motor, 7. Long handle, 8. Connecting plate, 9. First short board, 10. Second short board. Specific implementation manner

[0015] Refer to Figure 1 , the utility model includes an upper semi-circular leak detection part, a lower semi-circular leak detection part, a grasping part and an opening and closing part; the structures of the upper semi-circular leak detection part and the lower semi-circular leak detection part are completely the same; the grasping part is arranged between the same ends of the upper semi-circular leak detection part and the lower semi-circular leak detection part, and the opening and closing part is arranged between the other ends of the upper semi-circular leak detection part and the lower semi-circular leak detection part; the two semi-circular leak detection parts are combined into a complete circle and separated through the opening and closing part; the staff holds the grasping part and drives the rest of the parts to move along the gas pipeline.

[0016] The upper semi-circular leak detection part includes a semi-circular plate 1, a warning light 2, a leak detection mechanism and a positioning mechanism; a plurality of warning lights 2 are uniformly arranged on the circumferential outer wall of the semi-circular plate 1, and the signal input end of the warning light 2 is connected to the signal output end of the CPU; the warning light 2 is used to prompt whether there is a leak and guide the position of the leak point; both the leak detection mechanism and the positioning mechanism are arranged on the semi-circular plate 1; the function of the leak detection mechanism is to detect whether the gas pipeline leaks, and the function of the positioning mechanism is to locate the leak point on the gas pipeline.

[0017] A semi-circular groove is arranged on the circumferential inner wall of the semi-circular plate 1; the leak detection mechanism includes a plurality of first gas concentration detectors, a plurality of holes are uniformly arranged on the inner wall of the semi-circular groove of the semi-circular plate 1, and each hole is provided with a first gas concentration detector, and the signal output end of the first gas concentration detector is connected to the signal input end of the CPU; when the two semi-circular plates 1 are combined, it is a complete circular structure, which surrounds the outside of the gas pipeline and moves along the gas pipeline. Once there is a gas leak at a certain place of the gas pipeline, it will be detected by the first gas concentration detectors on the semi-circular plate 1.

[0018] The positioning mechanism is used to accurately locate the leakage point of the gas pipeline; the positioning mechanism includes an arc-shaped slider 3 and an arc-shaped moving part; the arc-shaped slider 3 is slidably set in the semicircular groove of the semicircular plate 1; the arc-shaped slider 3 can make an arc-shaped movement in the semicircular plate 1, thereby driving the second gas concentration detector to move, and the second gas concentration detector compares the gas concentration along the way during the movement, thereby knowing the position of the maximum gas concentration point; the arc-shaped moving part is set on the side wall of the semicircular plate 1, and it is connected to the arc-shaped slider 3; a hole is set on the outer wall of the arc-shaped slider 3, and the second gas concentration detector is set in the hole of the arc-shaped slider 3, and the signal output end of the second gas concentration detector is connected to the signal input end of the CPU.

[0019] The arc moving part includes a semicircular rack 4, a slide 5, a servo motor 6 and a driving gear; a semicircular hole is provided on the side wall of the semicircular plate 1, and the semicircular hole is connected to the semicircular groove on the inner wall of the semicircular plate 1; the slide 5 is located on the side wall of the semicircular plate 1, and a support rod is provided on it, which passes through the semicircular hole on the side wall of the semicircular plate 1 and is connected to the arc slider 3; the movement of the slide 5 drives the arc slider 3 to move synchronously; the servo motor 6 is arranged on the slide 5, and a driving gear is provided on its output shaft; the semicircular rack 4 is arranged on the side wall of the semicircular plate 1, and the driving gear meshing transmission is arranged on the semicircular rack 4; the servo motor can drive the driving gear to rotate, and the rotating driving gear moves on the semicircular rack 4, thereby driving the slide 5 and the arc slider 3 to move synchronously; the rotation speed and number of turns of the servo motor are controllable, and the position of the driving gear is also known every time it rotates one circle, so that the real-time and accurate position of the arc slider 3 is known, and the signal input end of the servo motor 6 is connected to the signal output end of the CPU.

[0020] The gripping part includes a long handle 7 and a connecting plate 8; the long handle 7 is arranged at the end of the semicircular plate 1 of the lower semicircular leak detection part, and the connecting plate 8 is arranged at the end of the semicircular plate 1 of the upper semicircular leak detection part; the long handle 7 and the connecting plate 8 are both provided with threaded holes at one end close to the semicircular plate 1, and bolts are simultaneously passed through the threaded holes of the long handle 7 and the connecting plate 8; tightening the bolts can reliably merge the two semicircular plates into a complete circle, and the staff holds the long handle 7 to drive the device to move along the gas pipeline, and then perform leak detection along the gas pipeline.

[0021] The opening and closing part includes a first short board 9, a second short board 10 and a hinge seat; the first short board 9 is arranged at one end of the semi-circular plate 1 of the lower semi-circular leak detection part away from the long handle 7; the hinge seat is arranged on the first short board 9; the second short board 10 is arranged at one end of the semi-circular plate 1 of the upper semi-circular leak detection part away from the connecting plate 8, and the second short board 10 and the hinge seat form a hinged connection mechanism; the two semi-circular plates are opened and closed through the hinge structure of the second short board 10 and the hinge seat, so that the two semi-circular plates can successfully cross the gas pipeline and then merge to surround the gas pipeline.

[0022] In the present utility model, the model of the CPU module is 87C196KC.

[0023] Principle of use: The staff unscrew the bolts, separate the two semi-circular plates 1, make them cross the gas pipeline, and then merge the two semi-circular plates 1 so that the two merged semi-circular plates 1 form a complete circle. After the two semi-circular plates 1 are merged, they surround the outer wall of the gas pipeline. Then the staff hold the long handle 7 and move forward along the axis direction of the gas pipeline. During the forward movement, the first gas concentration detector on the inner wall of the semi-circular plate 1 detects the gas concentration in the air in real time. Once the gas concentration is found to be abnormal, the warning light 2 flashes, and the staff stops moving. Then the servo motor operates to drive the driving gear to rotate, driving the sliding plate 5 and the arc-shaped slider 3 to move synchronously. The second gas concentration detector moves along a complete semi-circular trajectory and records the gas concentration along the way for comparison. When the arc-shaped slider 3 moves to the end, data comparison is carried out to determine the position of the point with the maximum concentration. The warning light closest to the position where the arc-shaped slider 3 is located when the gas concentration is the highest stops flashing, indicating to the staff that this point is suspected of being a gas leakage point. Then the staff conduct a inspection on this point. After the inspection and plugging, they continue to hold the long handle 7 and move along the gas pipeline until the entire gas pipeline is inspected.

Claims

1. A leak detection device applicable to gas pipelines, characterized in that: It includes an upper semi-circular leak detection part, a lower semi-circular leak detection part, a gripping part and an opening and closing part; the structures of the upper semi-circular leak detection part and the lower semi-circular leak detection part are exactly the same; the gripping part is arranged between the same ends of the upper semi-circular leak detection part and the lower semi-circular leak detection part, and the opening and closing part is arranged between the other ends of the upper semi-circular leak detection part and the lower semi-circular leak detection part; the upper semi-circular leak detection part includes a semi-circular plate (1), warning lights (2), a leak detection mechanism and a positioning mechanism; a plurality of warning lights (2) are uniformly arranged on the circumferential outer wall of the semi-circular plate (1), and the signal input end of the warning light (2) is connected to the signal output end of the CPU; the leak detection mechanism and the positioning mechanism are both arranged on the semi-circular plate (1); a semi-circular groove is arranged on the circumferential inner wall of the semi-circular plate (1); the leak detection mechanism includes a plurality of first gas concentration detectors, a plurality of holes are uniformly arranged on the inner wall of the semi-circular groove of the semi-circular plate (1), and a first gas concentration detector is arranged in each hole, and the signal output end of the first gas concentration detector is connected to the signal input end of the CPU; the positioning mechanism includes an arc-shaped slider (3) and an arc-shaped moving part; the arc-shaped slider (3) is slidably arranged in the semi-circular groove of the semi-circular plate (1); the arc-shaped moving part is arranged on the side wall of the semi-circular plate (1) and is connected to the arc-shaped slider (3); a hole is arranged on the outer side wall of the arc-shaped slider (3), and a second gas concentration detector is arranged in the hole of the arc-shaped slider (3), and the signal output end of the second gas concentration detector is connected to the signal input end of the CPU.

2. The leak detection device applicable to gas pipelines according to claim 1, wherein: The arc-shaped moving part includes a semi-circular rack (4), a sliding piece (5), a servo motor (6) and a driving gear; a semi-circular hole is arranged on the side wall of the semi-circular plate (1), and the semi-circular hole communicates with the semi-circular groove on the inner wall of the semi-circular plate (1); the sliding piece (5) is located on the side wall of the semi-circular plate (1), and a support rod is arranged on it, and the support rod passes through the semi-circular hole on the side wall of the semi-circular plate (1) and is connected to the arc-shaped slider (3); the servo motor (6) is arranged on the sliding piece (5), and a driving gear is arranged on its output shaft; the semi-circular rack (4) is arranged on the side wall of the semi-circular plate (1), and the driving gear is meshed and driven on the semi-circular rack (4); the signal input end of the servo motor (6) is connected to the signal output end of the CPU.

3. The leak detection device applicable to gas pipelines according to claim 2, characterized in that: The gripping part includes a long handle (7) and a connecting plate (8); the long handle (7) is arranged at the end of the semi-circular plate (1) of the lower semi-circular leak detection part, and the connecting plate (8) is arranged at the end of the semi-circular plate (1) of the upper semi-circular leak detection part; threaded holes are arranged at the ends of the long handle (7) and the connecting plate (8) close to the semi-circular plate (1), and bolts pass through the threaded holes of the long handle (7) and the connecting plate (8) at the same time.

4. The leak detection device applicable to a gas pipeline according to claim 3, wherein: The opening and closing part includes a first short board (9), a second short board (10) and a hinge seat; the first short board (9) is arranged at one end of the semi-circular plate (1) of the lower semi-circular leak detection part away from the long handle (7); the hinge seat is arranged on the first short board (9); the second short board (10) is arranged at one end of the semi-circular plate (1) of the upper semi-circular leak detection part away from the connecting plate (8), and the second short board (10) and the hinge seat form a hinged mating connection mechanism.

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