Gas pipe network leakage detection and examination system

Abstract

The utility model discloses a gas pipe network leakage detection examination system, which comprises a gas inlet pipe, a first gas outlet pipe, a plurality of gas conveying pipes, a plurality of second gas outlet pipes and a pressure regulating box, the gas inlet pipe is connected with the pressure regulating box, and the pressure regulating box is connected with the first gas outlet pipe; according to the system, a gas inlet pipe, a first gas outlet pipe, a plurality of gas conveying pipes, a plurality of second gas outlet pipes and a pressure regulating box are arranged, the pressure regulating box is used for regulating an input pipeline, then gas subjected to pressure regulation is output, a corresponding first switch valve is selected to be opened according to the actual examination condition, and the corresponding first gas outlet pipe is opened; gas is conveyed to the multiple second gas outlet pipes connected with the first gas outlet pipe through the first gas outlet pipe and finally sprayed out through the gas nozzles, the multiple second gas outlet pipes located at different positions are detected by examinees within the set time so as to find out the leaked second gas outlet pipe, leakage of the gas pipeline is simulated, and therefore the examination of gas leakage detection is achieved. And the leakage detection experience of training and checking personnel is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas, in particular to a gas pipeline leakage detection assessment system. Background Art

[0002] Gas leakage refers to the accidental leakage of gas from pipelines or cylinders into the air. In urban pipe networks, buried gas pipelines, such as those located in valve wells, may leak due to external forces or long-term aging during use. In such cases, emergency repairs are required. To improve the efficiency of maintenance personnel, they need to be assessed and trained so that they can quickly locate the leakage points of gas pipelines. Existing assessment and training are usually carried out through lectures or the like, without on-site training, or allowing maintenance personnel to follow to actual leakage sites for observation and learning. This method makes it difficult for maintenance personnel to learn quickly. Content of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a practical gas pipeline leakage detection assessment system.

[0004] To achieve the above purpose, the solution provided by the utility model is: a gas pipeline leakage detection assessment system, including an intake pipe, a first outlet pipe, a plurality of gas transmission pipes, a plurality of second outlet pipes, and a pressure regulating box. The intake pipeline is connected to the pressure regulating box, the pressure regulating box is connected to the first outlet pipe, the first outlet pipe is respectively connected to a plurality of gas transmission pipes, one gas transmission pipe is connected to at least two second outlet pipes, a first switch valve is arranged on the first outlet pipe, the second outlet pipes are arranged vertically, a second switch valve and a check valve are sequentially arranged on the second outlet pipes, the outlet end of the second outlet pipe is connected with a jet nozzle, a protective cap is formed at the top of the jet nozzle, the protective cap is in a conical structure, a plurality of diffusion openings are formed on the outer side wall of the jet nozzle, the plurality of diffusion openings are arranged at intervals in a ring shape, and the diffusion openings communicate with the inside of the jet nozzle.

[0005] The beneficial effects of the utility model are as follows: it can be used for the assessment of gas leak detection. The system is provided with an air inlet pipe, a first air outlet pipe, a plurality of gas transmission pipes, a plurality of second air outlet pipes, and a pressure regulating box. The pressure regulating box is used to regulate the input pipeline, and then the pressure-regulated gas is outputted. Then, according to the actual assessment situation, the corresponding first switch valve is selected to open to open the corresponding first air outlet pipe, so as to make the gas be transported to the plurality of second air outlet pipes connected thereto through the first air outlet pipe, and finally ejected through the air nozzle. The examinee detects the plurality of second air outlet pipes at different positions within a specified time to find out the leaking second air outlet pipe, so as to simulate the leakage of the gas pipeline, thereby realizing the assessment of gas leak detection and effectively improving the leak detection experience of the training and assessment personnel. At the same time, since the second air outlet pipe is vertically buried, the air nozzle is provided and the protective cap of the air nozzle is used to prevent impurities such as mud and sand from falling into the second air outlet pipe to cause blockage.

[0006] Furthermore, a pressure gauge is provided on the gas pipeline.

[0007] Furthermore, the pressure regulating box is provided with a first gas pipe, a second gas pipe and a pressure regulator, one end of the first gas pipe is connected to the air inlet pipe and the other end is connected to the pressure regulator, one end of the second gas pipe is connected to the pressure regulator and the other end is connected to the gas delivery pipe. The utility model adopts the above structure to achieve gas pressure regulation.

[0008] Furthermore, a pressure gauge is provided on the first air duct.

[0009] Furthermore, the first gas pipe and the second gas pipe are respectively connected to a pressure measuring pipe, and the pressure measuring pipe is provided with a third switch valve. After the utility model adopts the above structure, the pressure of the gas transported by the first gas pipe and the second gas pipe can be measured by opening the third switch valve.

[0010] Furthermore, it also includes a plurality of valve wells, wherein the valve wells include a valve well body and a well cover, wherein the valve well body is hollow, and an outlet end of the second outlet pipe extends into the valve well body, and the well cover seals the top of the valve well body. After the utility model adopts the above structure, it effectively protects the gas pipeline.

[0011] Furthermore, the second switch valve is a solenoid valve. After the utility model adopts the above structure, the second switch valve can be remotely controlled to open. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is an overall structural diagram of the utility model (the valve well is not shown).

[0013] Figure 2 This is the internal structure diagram of the voltage regulating box of the utility model.

[0014] Figure 3 This is a diagram of the internal structure of the valve well of the utility model.

[0015] Among them, 1 is the air inlet pipe, 2 is the pressure regulating box, 21 is the first air duct, 22 is the second air duct, 23 is the pressure regulator, 24 is the pressure measuring tube, 241 is the third switch valve, 3 is the air supply pipe, 4 is the first air outlet pipe, 41 is the first switch valve, 5 is the second air outlet pipe, 51 is the second switch valve, 52 is the check valve, 53 is the air nozzle, 531 is the protective cap, 532 is the diffuser, 61 is the valve well body, 62 is the well cover, and 7 is the pressure gauge. DETAILED DESCRIPTION

[0016] The technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0017] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0018] See attached Figure 1 To Attachment Figure 3 As shown, a gas pipeline network leak detection and assessment system includes an air inlet pipe 1, a first air outlet pipe 4, multiple gas transmission pipes 3, multiple second air outlet pipes 5, a pressure regulating box 2, and multiple valve wells. The air inlet pipe 1 is connected to the pressure regulating box 2, the pressure regulating box 2 is connected to the first air outlet pipe 4, the first air outlet pipe 4 is respectively connected to multiple gas transmission pipes 3, one gas transmission pipe 3 is connected to at least two second air outlet pipes 5, a first switch valve 41 is arranged on the first air outlet pipe 4, the second air outlet pipe 5 is vertically arranged, the second air outlet pipe 5 is sequentially provided with a second switch valve 51 and a check valve 52, the air outlet end of the second air outlet pipe 5 is connected to an air nozzle 53, a protective cap 531 is formed on the top of the air nozzle 53, the protective cap 531 is in a conical structure, a plurality of diffusers 532 are opened on the outer wall of the air nozzle 53, the plurality of diffusers 532 are arranged in a ring-shaped manner, and the diffusers 532 are connected to the inside of the air nozzle 53; the second switch valve 51 is a solenoid valve.

[0019] In this embodiment, a pressure gauge 7 is provided on the gas delivery pipe 3 .

[0020] In this embodiment, a first gas conduit 21, a second gas conduit 22, and a pressure regulator 23 are provided inside the pressure regulating box 2. One end of the first gas conduit 21 is connected to the gas inlet pipe 1, and the other end is connected to the pressure regulator 23. One end of the second gas conduit 22 is connected to the pressure regulator 23, and the other end is connected to the gas transmission pipe 3. A pressure gauge 7 is provided on the first gas conduit 21. Pressure measuring pipes 24 are respectively connected to the first gas conduit 21 and the second gas conduit 22, and a third on-off valve 241 is provided on the pressure measuring pipe 24.

[0021] In this embodiment, the valve pit includes a valve pit main body 61 and a manhole cover 62. The valve pit main body 61 is hollow, and the gas outlet end of a second gas outlet pipe 5 extends into the valve pit main body 61, and the manhole cover 62 covers the top of the valve pit main body 61.

[0022] In this embodiment, the specific leakage detection process is as follows: adjust the gas pressure input from the gas inlet pipe 1 according to the actual situation. Among them, by observing the pressure gauges in the regulating box 2 and on the gas transmission pipe 3, the pressure regulator 23 is controlled to adjust the pressure. Then, a plurality of valve pits are respectively distributed at different positions and buried in the ground. The examiner, according to the actual situation, opens the first on-off valve 41 on the corresponding first gas outlet pipe 4 and the second on-off valve 51 on the second gas outlet pipe 5 to deliver the gas in the gas transmission pipe 3 to the first gas outlet pipe 4, and then to the plurality of second gas outlet pipes 5 connected to the first gas outlet pipe 4, and finally output through the plurality of diffusion ports 532 of the gas jet nozzles 53 of the second gas outlet pipe 5 to the valve pit main body 61 corresponding to the second gas outlet pipe 5.

[0023] At this time, the candidate holds a detector and detects the ground to assess whether the candidate can detect which valve pits have gas leakage within the specified time.

[0024] The above-described embodiments are only preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Any person skilled in the art can make more possible changes and modifications to the technical solution of the present invention, or modify it into an equivalent embodiment with equivalent changes, without departing from the scope of the technical solution of the present invention. Therefore, all equivalent changes made according to the idea of the present invention without departing from the content of the technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A gas network leak detection and assessment system, comprising an air inlet pipe (1), a first air outlet pipe (4), a plurality of gas transmission pipes (3), a plurality of second air outlet pipes (5), and a pressure regulating box (2), characterized in that: The air inlet pipe (1) is connected to a pressure regulating box (2), the pressure regulating box (2) is connected to a first air outlet pipe (4), the first air outlet pipe (4) is respectively connected to a plurality of air supply pipes (3), one of the air supply pipes (3) is connected to at least two second air outlet pipes (5), the first air outlet pipe (4) is provided with a first switch valve (41), the second air outlet pipe (5) is vertically arranged, the second air outlet pipe (5) is sequentially provided with a second switch valve (51) and a check valve (52), the air outlet end of the second air outlet pipe (5) is connected to an air nozzle (53), a protective cap (531) is formed on the top of the air nozzle (53), the protective cap (531) is in a conical structure, the outer wall of the air nozzle (53) is provided with a plurality of diffusion ports (532), the plurality of diffusion ports (532) are arranged in a ring-shaped manner, and the diffusion ports (532) are connected to the interior of the air nozzle (53).

2. A gas pipe network leak detection and assessment system according to claim 1, characterized in that: The gas delivery pipe (3) is provided with a pressure gauge (7).

3. A gas pipe network leak detection and assessment system according to claim 1, characterized in that: The pressure regulating box (2) is provided with a first air guide pipe (21), a second air guide pipe (22), and a pressure regulator (23); one end of the first air guide pipe (21) is connected to the air inlet pipe (1), and the other end is connected to the pressure regulator (23); one end of the second air guide pipe (22) is connected to the pressure regulator (23), and the other end is connected to the air delivery pipe (3).

4. A gas pipe network leak detection and assessment system according to claim 3, characterized in that: The first air guide pipe (21) is provided with a pressure gauge (7).

5. A gas pipe network leak detection and assessment system according to claim 3, characterized in that: The first air guide tube (21) and the second air guide tube (22) are respectively connected to a pressure measuring tube (24), and a third switch valve (241) is provided on the pressure measuring tube (24).

6. A gas pipe network leak detection and assessment system according to claim 1, characterized in that: It also includes a plurality of valve wells, wherein the valve wells include a valve well body (61) and a well cover (62); the valve well body (61) is hollow, an outlet end of the second outlet pipe (5) extends into the valve well body (61), and the well cover (62) seals the top of the valve well body (61).

7. A gas pipe network leak detection and assessment system according to claim 1, characterized in that: The second switch valve (51) is a solenoid valve.

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