Gas leakage metering and detecting device

Abstract

The utility model relates to the technical field of gas pipeline detection, in particular to a gas leakage metering and detecting device which comprises a gas pipe and a connecting pipe, the connecting pipe is arranged above the gas pipe, and a fixing mechanism is arranged on the outer wall of the gas pipe. The upper semicircular ring is buckled above the gas pipe, the lower semicircular ring is buckled below the gas pipe, the two semicircular rings are made to be opposite, the positions of the through holes correspond to the positions where corrosion and abrasion occur on the gas pipe, at the moment, the upper lug plate and the lower lug plate are attached, the screw rod penetrates through the through holes in the two lug plates, and the screw rod penetrates through the through holes in the two lug plates. The upper lug plate and the lower lug plate are connected and fixed through the screw rod, the nut and the nut, the two semicircular rings are both fixed to the outer wall of the gas pipe, the upper semicircular ring fixes the position of the connecting pipe, then the position of the detection mechanism is fixed, and the sealing performance between the gas pipe and the semicircular rings is improved through the rubber pads. And the fixing mechanism can fix the detection mechanism at a required position on the outer wall of the gas pipe according to actual use requirements.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline detection technology, specifically a gas leak metering and detection device. Background Technology

[0002] Gas is an essential commodity in people's lives. It mainly includes natural gas, manufactured gas, and liquefied petroleum gas for residential and industrial use. Household natural gas is usually connected through pipelines. However, after long-term use, the sealing rings may corrode and break, requiring maintenance personnel to conduct regular inspections. Natural gas has an odor. Excessive leaks can be detected by human senses, but small gas leaks are difficult to detect.

[0003] For example, a gas leak metering and detection device with authorization announcement number CN214467935U includes a gas pipe, a valve body movably connected to the inner cavity of the gas pipe, a handle on the top of the valve body, sealing rings at the junctions of the valve body with the inner and outer walls of the gas pipe, a flow port in the inner cavity of the gas pipe, and a PVC pipe on the left side of the valve body. However, this document still has shortcomings. During use, since the main component of natural gas is hydrocarbons, which are insoluble in water, the gas pressure will compress the aqueous solution on the right, causing the water level on the left to rise. When the aqueous solution becomes unbalanced, the water level on the left will rise. The device lifts a thin plate, which in turn lifts a linkage rod. A measuring plate is mounted on the top of the linkage rod, and the outer ring of the measuring plate is tangent to the sensor. The sensor can accurately obtain the position of the rising measuring plate and the corresponding scale reading, thereby accurately detecting leaking gas and enabling timely maintenance of the pipeline to prevent accidents caused by gas leaks. However, the detection device described in the above document can only detect at a fixed position on the gas pipe, making it inconvenient to detect different positions on the gas pipe according to actual usage needs. In addition, the detection mechanism in the above document is fixed in position, making it inconvenient to disassemble and repair the detection mechanism when it malfunctions. Utility Model Content

[0004] The purpose of this invention is to solve the problem of inconvenience in detecting different locations of gas pipes according to actual usage needs, and to propose a gas leak metering and detection device.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A gas leak metering and detection device is designed, including a gas pipe and a connecting pipe. The connecting pipe is disposed above the gas pipe. A fixing mechanism is provided on the outer wall of the gas pipe. A first connector is fixedly connected to one end of the connecting pipe. The first connector is clearance-fitted with the outer wall of a second cylinder. The end of the second cylinder is fixedly connected to the second connector. The outer wall of the second connector is in contact with the first connector. A connecting mechanism is provided on the outer wall of the second connector.

[0007] Preferably, the fixing mechanism includes a rubber pad that fits against the outer wall of the gas pipe. The rubber pad has a through hole inside and is fixed to the inner wall of the semi-circular ring. The upper semi-circular ring is fixedly connected to the outer wall of the other end of the connecting pipe. An ear plate is fixedly connected to the outer wall of the semi-circular ring. The through hole in the ear plate is clearance-fitted with the outer wall of the screw. A nut is fixedly connected to the upper end of the screw. A nut is threadedly connected to the outer wall of the screw, and the nut is fixedly connected to the lower ear plate.

[0008] Preferably, the connecting mechanism includes a ring and a first spring. The ring is fixed to the outer wall of the second connector. A first cylinder is slidably connected to the outer wall of the ring. A wedge block is fixed to the inner wall of the first cylinder. The first spring is sleeved on the outer wall of the second connector. Both ends of the first spring are fixedly connected to the ring and the wedge block, respectively. The outer wall of the wedge block is in contact with a support rod. The outer wall of the support rod is slidably connected to the first connector. A second spring is sleeved on the outer wall of the support rod. Both ends of the second spring are fixedly connected to the first connector and the support rod, respectively. The end of the support rod is engaged with a slot provided inside the second cylinder.

[0009] Preferably, the second connector is fixedly connected to one end of the bend, and the interior of the bend contains an aqueous solution.

[0010] Preferably, a floating plate floats above the aqueous solution, and the outer wall of the floating plate is fitted with the bend in the tube.

[0011] Preferably, a connecting rod is fixedly connected above the floating plate, the outer wall of the connecting rod is slidably connected to the bent pipe and the housing, and a sensor is fixedly installed inside the housing.

[0012] Preferably, a measuring plate is fixedly connected to the upper end of the connecting rod, and the housing is fixedly connected to the bent pipe via a vertical rod.

[0013] Preferably, the gas pipe has a valve body inside and an automatic pressure reducing valve on its outer wall.

[0014] The gas leak metering and detection device proposed in this utility model has the following advantages: Through the cooperation of a rubber pad, through-hole, semi-circular ring, ear plate, screw, nut, and bolt, the upper semi-circular ring is fastened to the top of the gas pipe, and the lower semi-circular ring is fastened to the bottom of the gas pipe, with the two semi-circular rings facing each other. The position of the through-hole corresponds to the location of corrosion and wear on the gas pipe. At this time, the upper and lower ear plates are in contact. The screw passes through the through-hole in the two ear plates, and the screw, nut, and bolt connect and fix the upper and lower ear plates. Both semi-circular rings are fixed to the outer wall of the gas pipe. The upper semi-circular ring fixes the position of the connecting pipe, thereby fixing the position of the detection mechanism. The rubber pad increases the sealing between the gas pipe and the semi-circular ring. The fixing mechanism can fix the detection mechanism at the required position on the outer wall of the gas pipe according to actual usage needs, facilitating detection at different positions of the gas pipe according to actual usage requirements.

[0015] Through the cooperation of the ring, the first cylinder, the wedge block, the first spring, the support rod, and the second spring, the first cylinder is pulled towards the bend. The first cylinder drives the wedge block to move, the wedge block separates from the support rod and compresses the first spring. The wedge block no longer squeezes the support rod, and the second spring drives the support rod to slide. The end of the support rod separates from the slot provided in the second cylinder, pulling the bend. The second cylinder separates from the first connector, allowing the detection mechanism to be disassembled for maintenance. After maintenance, the second cylinder is inserted into the interior of the first connector. The first cylinder is released, and the first spring, under its elastic action, drives the wedge block to move in the opposite direction. The wedge block drives the support rod to slide in the opposite direction, and the support rod compresses the second spring. The end of the support rod is inserted into the slot provided in the second cylinder, securing the second cylinder inside the first connector. The positions of the first and second connectors are relatively fixed, completing the installation of the detection mechanism. This facilitates disassembly and maintenance of the detection mechanism in case of malfunction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the rubber pad, through hole, and semi-circular ring connection in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure at the connection between the ring, the first cylinder, and the wedge block in this utility model;

[0020] Figure 5 This is a schematic diagram of the connection between the bent pipe, the aqueous solution, and the floating plate in this utility model.

[0021] In the diagram: 1. Gas pipe, 2. Connecting pipe, 3. Fixing mechanism, 301. Rubber pad, 302. Through hole, 303. Semi-circular ring, 304. Ear plate, 305. Screw, 306. Nut, 307. Nut, 4. Connecting mechanism, 401. Ring, 402. First cylinder, 403. Wedge block, 404. First spring, 405. Support rod, 406. Second spring, 5. First connector, 6. Second cylinder, 7. Second connector, 8. Bend, 9. Aqueous solution, 10. Floating plate, 11. Connecting rod, 12. Metering plate, 13. Housing, 14. Sensor, 15. Valve body, 16. Automatic pressure reducing valve. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] See attached document Figure 1-5 In this embodiment, a gas leak metering and detection device includes a gas pipe 1 and a connecting pipe 2. The connecting pipe 2 is disposed above the gas pipe 1 and is connected to the gas pipe 1. A fixing mechanism 3 is provided on the outer wall of the gas pipe 1. The fixing mechanism 3 fixes the bend 8 above the gas pipe 1. A first connector 5 is fixedly connected to one end of the connecting pipe 2 and is connected to the first connector 5. The first connector 5 is clearance-fitted with the outer wall of the second cylinder 6 and the second cylinder 6 can be inserted into the interior of the first connector 5. The end of the second cylinder 6 is fixedly connected to the second connector 7 and is connected to the second connector 7. The outer wall of the second connector 7 is in contact with the first connector 5. A sealing ring is provided at the connection between the second connector 7 and the first connector 5 to increase the sealing performance at the connection between the second connector 7 and the first connector 5. A connecting mechanism 4 is provided on the outer wall of the second connector 7 to realize the connection between the second connector 7 and the first connector 5.

[0024] The second connector 7 is fixedly connected to one end of the bend 8, and the second connector 7 is connected to the bend 8. An aqueous solution 9 is provided inside the bend 8, and a floating plate 10 floats above the aqueous solution 9. The aqueous solution 9 can drive the floating plate 10 to move. The outer wall of the floating plate 10 is in clearance fit with the bend 8. A connecting rod 11 is fixedly connected above the floating plate 10. The floating plate 10 and the connecting rod 11 move together. The outer wall of the connecting rod 11 is slidably connected to the bend 8 and the housing 13. The connecting rod 11 slides inside the bend 8 and the housing 13. The housing 13 is made of transparent plastic, and a sensor 14 is fixedly installed inside the housing 13. A metering plate 12 is fixedly connected to the upper end of the gas pipe 1. The connecting rod 11 drives the metering plate 12 to move. The housing 13 is fixedly connected to the bend pipe 8 through a vertical rod. A valve body 15 is installed inside the gas pipe 1, and an automatic pressure reducing valve 16 is installed on the outer wall of the gas pipe 1. The internal structure and working principle of the valve body 15, the automatic pressure reducing valve 16, the floating plate 10, the metering plate 12 and the sensor 14 are the same as those in a gas leak metering and detection device with authorization announcement number CN214467935U. The bend pipe 8, the aqueous solution 9, the floating plate 10, the connecting rod 11, the metering plate 12, the housing 13 and the sensor 14 constitute the detection mechanism.

[0025] The fixing mechanism 3 includes a rubber pad 301, a through hole 302, a semi-circular ring 303, an ear plate 304, a screw 305, a nut 306, and a nut 307. The rubber pad 301 fits against the outer wall of the gas pipe 1, increasing the sealing between the gas pipe 1 and the semi-circular ring 303. The rubber pad 301 has a through hole 302 inside, facilitating gas passage. The through hole 302 is connected to the connecting pipe 2. The rubber pad 301 is fixed to the inner wall of the semi-circular ring 303. The upper semi-circular ring 303 is fixedly connected to the outer wall of the other end of the connecting pipe 2, positioning the connecting pipe 2. A lug 304 is fixedly connected to the outer wall of the ring 303. The semi-circular ring 303 moves together with the lug 304. The through hole in the lug 304 is clearance-fitted with the outer wall of the screw 305. The screw 305 can pass through the inside of the lug 304. A nut 306 is fixedly connected to the upper end of the screw 305. The nut 306 cannot pass through the through hole of the lug 304. A nut 307 is threadedly connected to the outer wall of the screw 305. The screw 305 can be screwed into the inside of the nut 307. The nut 307 is fixedly connected to the lower lug 304. The screw 305, the nut 306 and the nut 307 connect and fix the upper and lower lugs 304.

[0026] The upper semicircular ring 303 is fastened to the top of the gas pipe 1, and the lower semicircular ring 303 is fastened to the bottom of the gas pipe 1, with the two semicircular rings 303 facing each other and the position of the through hole 302 corresponding to the position where corrosion and wear occur on the gas pipe 1. At this time, the upper and lower ear plates 304 are in contact. The screw 305 is passed through the through hole in the two ear plates 304. The screw 305, nut 306 and nut 307 connect and fix the upper and lower ear plates 304. Both semicircular rings 303 are fixed to the outer wall of the gas pipe 1. The upper semicircular ring 303 fixes the position of the connecting pipe 2, thereby fixing the position of the detection mechanism. The rubber gasket 301 increases the sealing between the gas pipe 1 and the semicircular ring 303. The fixing mechanism 3 can fix the detection mechanism at the required position on the outer wall of the gas pipe 1 according to actual use needs, which is convenient for detecting different positions of the gas pipe according to actual use needs.

[0027] The connecting mechanism 4 includes a ring 401, a first cylinder 402, a wedge block 403, a first spring 404, a support rod 405, and a second spring 406. The ring 401 is fixed to the outer wall of the second connecting head 7. The first cylinder 402 is slidably connected to the outer wall of the ring 401. The wedge block 403 is fixed to the inner wall of the first cylinder 402. The first cylinder 402 drives the wedge block 403 to move. The first spring 404 is sleeved on the outer wall of the second connecting head 7. The two ends of the first spring 404 are fixedly connected to the ring 401 and the wedge block 403, respectively. Under elastic action, the first spring 404 can drive the wedge block 403 to move. The outer wall of the wedge block 403 is in contact with the support rod 405. The wedge block 403 drives the support rod 405 to move. The outer wall of the support rod 405 is slidably connected to the first connector 5. The support rod 405 slides inside the first connector 5. A second spring 406 is sleeved on the outer wall of the support rod 405. The two ends of the second spring 406 are fixedly connected to the first connector 5 and the support rod 405 respectively. Under the elastic action, the second spring 406 can drive the support rod 405 to slide. The end of the support rod 405 is engaged with the slot provided in the second cylinder 6. The end of the support rod 405 is inserted into the groove provided in the second cylinder 6 to fix the second cylinder 6 inside the first connector 5. The spring model is selected according to the actual use requirements to meet the working needs.

[0028] Pull the first cylinder 402 towards the bend 8. The first cylinder 402 drives the wedge block 403 to move. The wedge block 403 separates from the support rod 405 and compresses the first spring 404. The wedge block 403 no longer squeezes the support rod 405. The second spring 406 drives the support rod 405 to slide. The end of the support rod 405 separates from the groove provided in the second cylinder 6. Pull the bend 8, and the second cylinder 6 separates from the first connector 5. Disassemble the detection mechanism for maintenance. After maintenance, insert the second cylinder 6 into the first connector. Inside 5, the first cylinder 402 is released, and the first spring 404 drives the wedge block 403 to move in the opposite direction under the elastic action. The wedge block 403 drives the support rod 405 to slide in the opposite direction. The support rod 405 compresses the second spring 406 and inserts the end of the support rod 405 into the slot provided in the second cylinder 6, thus fixing the second cylinder 6 inside the first connector 5. The positions of the first connector 5 and the second connector 7 are relatively fixed, completing the installation of the detection mechanism. In case of failure of the detection mechanism, it is convenient to disassemble and repair the detection mechanism.

[0029] Working principle:

[0030] When using a gas leak metering and detection device to perform leak metering and detection on gas pipe 1;

[0031] Installation phase of the testing agency:

[0032] When corrosion and wear occur at a certain point on gas pipe 1, and it is necessary to detect whether a gas leak has occurred at the location of the corrosion and wear, the upper semicircular ring 303 is fastened to the top of gas pipe 1, and the lower semicircular ring 303 is fastened to the bottom of gas pipe 1, with the two semicircular rings 303 facing each other and the position of the through hole 302 corresponding to the location of corrosion and wear on gas pipe 1. At this time, the upper and lower ear plates 304 are in contact. The screw 305 is passed through the through hole in the two ear plates 304, and the nut 306 is rotated, so that the screw 305 is screwed into the nut 307. Inside, screw 305, nut 306 and nut 307 connect and fix the upper and lower ear plates 304. Both semicircular rings 303 are fixed to the outer wall of the gas pipe 1. The upper semicircular ring 303 fixes the position of the connecting pipe 2, thereby fixing the position of the detection mechanism. Rubber gasket 301 increases the sealing between the gas pipe 1 and the semicircular ring 303. The fixing mechanism 3 can fix the detection mechanism at the required position on the outer wall of the gas pipe 1 according to actual use needs, which is convenient for detecting different positions of the gas pipe according to actual use needs.

[0033] Testing phase:

[0034] When a leak occurs inside the gas pipe 1, the leaked gas enters the interior of the connecting pipe 2 through the through hole 302, and then enters the interior of the bend pipe 8 through the first connector 5, the second cylinder 6, and the second connector 7. An aqueous solution 9 is provided in the inner cavity of the bend pipe 8. Since the main component of natural gas is hydrocarbons, which are insoluble in water, the gas pressure will squeeze the aqueous solution 9 on the right side, causing the water level on the left side to rise. When the water solution 9 is out of balance, the water level on the left side rises, lifting the floating plate 10. The floating plate 10 drives the connecting rod to move upward. A metering plate 12 is fixed to the top of the connecting rod. The outer ring of the metering plate 12 is tangent to the sensor 14. The sensor 14 can accurately obtain the rising position of the metering plate and the corresponding scale value, thereby accurately detecting the leaked gas and timely maintaining the gas pipe 1 to avoid accidents caused by gas leaks.

[0035] Disassembly and repair phase of the testing agency:

[0036] When the testing mechanism malfunctions and needs to be disassembled and repaired, the first cylinder 402 is pulled towards the bend 8. The first cylinder 402 drives the wedge block 403 to move, separating the wedge block 403 from the support rod 405 and compressing the first spring 404. The wedge block 403 no longer compresses the support rod 405, and the second spring 406 drives the support rod 405 to slide. The end of the support rod 405 separates from the groove provided inside the second cylinder 6. The bend 8 is pulled, and the second cylinder 6 separates from the first connector 5, allowing the testing mechanism to be disassembled for repair. After the repair is completed, the first... The two cylinders 6 are inserted into the interior of the first connector 5. The first cylinder 402 is released, and the first spring 404 drives the wedge block 403 to move in the opposite direction under the elastic action. The wedge block 403 drives the support rod 405 to slide in the opposite direction. The support rod 405 compresses the second spring 406 and the end of the support rod 405 is inserted into the slot provided in the second cylinder 6, which clamps and fixes the second cylinder 6 inside the first connector 5. The positions of the first connector 5 and the second connector 7 are relatively fixed, completing the installation of the detection mechanism. In case of failure of the detection mechanism, it is convenient to disassemble and repair the detection mechanism.

[0037] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A gas leak metering and detection device, comprising a gas pipe (1) and a connecting pipe (2), wherein the connecting pipe (2) is disposed above the gas pipe (1), characterized in that: The outer wall of the gas pipe (1) is provided with a fixing mechanism (3), one end of the connecting pipe (2) is fixedly connected with a first connector (5), the first connector (5) is clearance-fitted with the outer wall of the second cylinder (6), the end of the second cylinder (6) is fixedly connected to the second connector (7), the outer wall of the second connector (7) is in contact with the first connector (5), and the outer wall of the second connector (7) is provided with a connecting mechanism (4).

2. The gas leak metering and detection device according to claim 1, characterized in that: The fixing mechanism (3) includes a rubber pad (301), which is in contact with the outer wall of the gas pipe (1). The rubber pad (301) has a through hole (302) inside. The rubber pad (301) is fixed to the inner wall of the semi-circular ring (303). The upper semi-circular ring (303) is fixedly connected to the outer wall of the other end of the connecting pipe (2). The outer wall of the semi-circular ring (303) is fixedly connected to an ear plate (304). The through hole in the ear plate (304) is clearance-fitted with the outer wall of the screw (305). The upper end of the screw (305) is fixedly connected to a nut (306). The outer wall of the screw (305) is threadedly connected to a nut (307). The nut (307) is fixedly connected to the lower ear plate (304).

3. The gas leak metering and detection device according to claim 1, characterized in that: The connecting mechanism (4) includes a ring (401) and a first spring (404). The ring (401) is fixed to the outer wall of the second connector (7). A first cylinder (402) is slidably connected to the outer wall of the ring (401). A wedge block (403) is fixed to the inner wall of the first cylinder (402). The first spring (404) is sleeved on the outer wall of the second connector (7). The two ends of the first spring (404) are respectively connected to the ring (401) and the first cylinder (402). The wedge block (403) is fixedly connected, the outer wall of the wedge block (403) is in contact with the support rod (405), the outer wall of the support rod (405) is slidably connected with the first connector (5), the outer wall of the support rod (405) is sleeved with a second spring (406), the two ends of the second spring (406) are fixedly connected to the first connector (5) and the support rod (405) respectively, and the end of the support rod (405) is engaged with the slot provided in the second cylinder (6).

4. The gas leak metering and detection device according to claim 1, characterized in that: The second connector (7) is fixedly connected to one end of the bend (8), and the interior of the bend (8) is provided with an aqueous solution (9).

5. A gas leak metering and detection device according to claim 4, characterized in that: A floating plate (10) floats above the aqueous solution (9), and the outer wall of the floating plate (10) is fitted with the bend (8) with a clearance.

6. A gas leak metering and detection device according to claim 5, characterized in that: A connecting rod (11) is fixedly connected above the floating plate (10). The outer wall of the connecting rod (11) is slidably connected to the bent pipe (8) and the housing (13). A sensor (14) is fixedly installed inside the housing (13).

7. A gas leak metering and detection device according to claim 6, characterized in that: The upper end of the connecting rod (11) is fixedly connected to a measuring plate (12), and the housing (13) is fixedly connected to the bent pipe (8) through a vertical rod.

8. A gas leak metering and detection device according to claim 1, characterized in that: The gas pipe (1) is provided with a valve body (15) inside, and an automatic pressure reducing valve (16) is provided on the outer wall of the gas pipe (1).

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