Pipeline leakage detection equipment

Abstract

The utility model relates to the technical field of electrical equipment maintenance, and particularly discloses a pipeline leakage detection device, which comprises a compressed air source, a main pipeline and a plurality of detection pipe groups, the main pipeline is connected with the compressed air source, the compressed air source can supply compressed air to the main pipeline, the main pipeline is connected with a pressure gauge, and the pressure gauge is used for measuring air pressure in the main pipeline. The inlet ends of the plurality of detection pipe groups are communicated with the main pipeline, and the outlet ends of the plurality of detection pipe groups are respectively communicated with the inlet ends of the plurality of to-be-detected pipelines. When the pipelines to be detected are detected, the plurality of detection pipe groups are connected with the plurality of pipelines to be detected at one time, and whether leakage exists on the pipelines to be detected is judged according to the reading of the pressure gauge, so that the plurality of pipelines to be detected can be detected at one time, the detection frequency is reduced, the detection efficiency is improved, and the maintenance period is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of power equipment maintenance, in particular to a pipeline leakage detection device. Background Art

[0002] The steam-water separator reheater is a critical component of the conventional island thermal system in nuclear power plants. In nuclear power generators, the fresh steam at the inlet of the turbine's high-pressure cylinder is saturated. This steam expands and generates work in the turbine's high-pressure cylinder, transforming into wet steam. If left untreated, the wet steam enters the intermediate-pressure cylinder directly to generate work. The liquid water in the wet steam will cause significant erosion on the intermediate-pressure cylinder blades. Therefore, the liquid water must be separated from the wet steam and reheated to superheated steam. During every overhaul, the steam-water separator reheater requires leak inspection. However, the large number of piping in a steam-water separator reheater necessitates inspecting each individual pipe during the overhaul, which is labor-intensive and can extend the maintenance period. Utility Model Content

[0003] The purpose of the utility model is to provide a pipeline leak detection device to realize the detection of multiple pipelines at the same time, thereby alleviating the problem of extended maintenance period caused by heavy maintenance workload.

[0004] The utility model provides a pipeline leak detection device, comprising a compressed gas source, a main pipeline and a plurality of detection tube groups, the main pipeline is connected to the compressed gas source, the compressed gas source can supply compressed gas to the main pipeline, the main pipeline is connected to a pressure gauge, the pressure gauge is used to measure the gas pressure in the main pipeline, the inlet ends of the plurality of detection tube groups are all connected to the main pipeline, and the outlet ends of the plurality of detection tube groups are respectively connected to the inlet ends of a plurality of pipelines to be tested.

[0005] As an optimal technical solution for pipeline leak detection equipment, the detection tube group includes a guide tube and a branch valve. The branch valve is connected between the inlet end of the guide tube and the main line. The branch valve is used to open or cut off the gas flow path between the main line and the guide tube. The outlet end of the guide tube is used to connect to the inlet end of the pipeline to be tested.

[0006] As the preferred technical solution for pipeline leak detection equipment, the branch valve is a ball valve or an angle valve.

[0007] As an optimal technical solution for pipeline leak detection equipment, the detection tube group also includes a quick connector and a quick-release connector. The quick connector and the quick-release connector are respectively installed at both ends of the guide tube. The guide tube is connected to the branch valve through a quick connector, and the guide tube is connected to the pipeline to be tested through the quick-release connector.

[0008] As an optimal technical solution for pipeline leak detection equipment, it also includes a plug, which is used to seal the outlet end of the pipeline to be tested.

[0009] As an optimal technical solution for pipeline leak detection equipment, it also includes a distributor, the main pipeline is connected to the input side of the distributor, and multiple detection tube groups are connected to the output side of the distributor.

[0010] As an optimal technical solution for pipeline leak detection equipment, the number of detection tube groups is 5, and all 5 detection tube groups are connected to the output side of the distributor.

[0011] As an optimal technical solution for the pipeline leak detection equipment, the compressed air source is a compressed air pump, which is connected to the main line and is used to supply compressed air to the main line.

[0012] As an optimal technical solution for pipeline leak detection equipment, it also includes a main valve, which is connected to the main pipe and is used to open or cut off the gas flow path of the main pipe.

[0013] As the preferred technical solution for pipeline leak detection equipment, the main valve is a ball valve or an angle valve.

[0014] The beneficial effects of the utility model are:

[0015] The utility model provides a pipeline leak detection device. When detecting pipelines to be tested, multiple pipelines to be tested are connected at one time through multiple detection tube groups, and whether there is a leak in the pipeline to be tested is judged by the indication of the pressure gauge, thereby realizing the detection of multiple pipelines to be tested at one time, reducing the number of detection times, improving the detection efficiency and shortening the maintenance period. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of a pipeline leak detection device in an embodiment of the present utility model;

[0017] Figure 2 This is a schematic structural diagram of the pipeline leak detection device in an embodiment of the utility model with the compressed air source hidden.

[0018] In the picture:

[0019] 1. Main line; 2. Pressure gauge; 3. Main valve; 4. Distributor; 5. Branch valve; 6. Quick connector; 7. Flow guide tube; 8. Quick release connector; 9. Compressed air source. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0021] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a specific position, be constructed and operated in a specific position, and therefore should not be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature being "above", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. The first feature being "below", "below" and "below" the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0022] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0023] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0024] like Figure 1-Figure 2As shown, the utility model provides a pipeline leak detection device, including a compressed gas source 9, a main line 1 and a plurality of detection tube groups, the main line 1 is connected to the compressed gas source 9, the compressed gas source 9 can supply compressed gas to the main line 1, the main line 1 is connected to a pressure gauge 2, the pressure gauge 2 is used to measure the gas pressure in the main line 1, the inlet ends of the plurality of detection tube groups are all connected to the main line 1, and the outlet ends of the plurality of detection tube groups are respectively connected to the inlet ends of the plurality of pipelines to be tested. When testing the pipelines to be tested, the plurality of pipelines to be tested are connected at one time through the plurality of detection tube groups, and the reading of the pressure gauge 2 is used to judge whether there is a leak in the pipelines to be tested, thereby realizing the detection of multiple pipelines to be tested at one time, reducing the number of tests, improving the detection efficiency and shortening the maintenance period. Specifically, during the test, if none of the pipelines to be tested connected to the multiple detection tube groups leaks, the reading of the pressure gauge 2 remains stable during the test; if one or several of the pipelines to be tested connected to the detection tube groups leaks, the reading of the pressure gauge 2 decreases during the test, and the pipeline to be tested that leaks can be further determined by separate ventilation measurement or other methods.

[0025] Furthermore, if Figure 1-Figure 2 As shown, the detection tube group includes a guide tube 7 and a branch valve 5, and the branch valve 5 is connected between the inlet end of the guide tube 7 and the main line 1. The branch valve 5 is used to conduct or cut off the gas flow path between the main line 1 and the guide tube 7. The outlet end of the guide tube 7 is used to communicate with the inlet end of the pipeline to be tested. The branch valve 5 can be a ball valve or an angle valve, preferably a ball valve. When testing the pipeline to be tested, if the pressure gauge 2 reading decreases, it means that one or more of the pipelines to be tested connected to the detection tube group has a leak. If a leak point occurs in the pipeline to be tested connected to one of the detection tube groups, all branch valves 5 are opened and compressed gas source 9 is introduced. Due to the leak in the pipeline to be tested, the reading of the pressure gauge 2 decreases. At this time, the branch valve 5 of any detection tube group is closed. If the reading of the pressure gauge 2 no longer decreases, it means that the corresponding pipeline to be tested has a leak. Otherwise, it means that the corresponding pipeline to be tested has not leaked. The branch valve 5 of the next detection tube group is closed until the pipeline to be tested that has a leak is determined. In the case where several pipelines to be tested connected to the detection tube groups are leaking, all the branch valves 5 are closed, and compressed gas is introduced from the compressed gas source 9. Since all the branch valves 5 are closed at this time, the reading of the pressure gauge 2 remains unchanged. At this time, any branch valve 5 is opened. If the reading of the pressure gauge 2 drops, it means that the corresponding pipeline to be tested is leaking. Otherwise, the pipeline to be tested is intact. Then close the branch valve 5 and open another branch valve 5. Repeat the above operation until all pipelines to be tested are tested. The pipeline leak detection equipment in this embodiment is used to detect multiple pipelines to be tested at the same time. When none of the tested pipelines are leaking, the operator can complete the detection without performing any additional operations. When the tested pipeline is leaking, the operator can determine the leaking pipeline by switching the branch valve 5.

[0026] Specifically, the pipeline leak detection equipment also includes a distributor 4, the main line 1 is connected to the input side of the distributor 4, and multiple detection tube groups are connected to the output side of the distributor 4. The compressed gas in the main line 1 is evenly distributed to each detection tube group through the distributor 4. The structure of the distributor 4 is no longer described here as a prior art in this field. The number of detection tube groups in this embodiment is preferably 5, and the 5 detection tube groups are all connected to the output side of the distributor 4. In theory, the more pipelines to be tested that are tested at one time, the more obvious the improvement in detection efficiency. However, if the number of detection tube groups is set too much, the complexity and volume of the equipment will be too large, making it inconvenient to operate. At the same time, the probability of two or more leaking pipelines to be tested appearing in the measured pipelines to be tested will be greatly increased. The detection personnel will need to pay a lot of extra workload to check one by one to determine each leaking pipeline to be tested, which ultimately leads to limited improvement in overall detection efficiency. In this regard, in this embodiment, the number of detection tube groups is set to 5. While realizing the detection of 5 pipelines to be tested at a time, it also reduces the probability of two or more leaking pipelines among the 5 pipelines to be tested. As a result, the additional workload of the detection personnel in troubleshooting the leakage points is reduced, and the overall detection efficiency is more significantly improved.

[0027] Furthermore, if Figure 1 and Figure 2 As shown, the detection tube group also includes a quick connector 6 and a quick release connector 8. The quick connector 6 and the quick release connector 8 are respectively installed at both ends of the guide tube 7. The guide tube 7 is connected to the branch valve 5 through the quick connector 6, and the guide tube 7 is connected to the pipeline to be tested through the quick release connector 8. During the use of the pipeline leak detection equipment, the quick release connector 8 can achieve rapid connection and disconnection with the pipeline to be tested, thereby improving the convenience of operation. After use, the quick connector 6 can be removed to save storage space. The quick connector 6, the quick release connector 8 and the related sealing structure all adopt the structure of the existing technology in this field, and are not specifically limited or explained here.

[0028] Optionally, the pipeline leak detection device in this embodiment further includes a plug for blocking the outlet of the pipeline to be tested. For pipelines to be tested with unsealed outlets, the plug can be used to temporarily block them to detect whether there is leakage on the pipe body of the pipeline to be tested.

[0029] Optionally, the compressed air source 9 in this embodiment is preferably a compressed air pump, which is connected to the main line 1 and is used to supply compressed air to the main line 1. The compressed air pump is compact and flexible, ensuring that the pipeline leak detection device is not limited by usage scenarios.

[0030] Optionally, the pipeline leak detection device further includes a main valve 3, which is connected to the main pipeline 1 and is used to open or close the gas flow path of the main pipeline 1. The main valve 3 can be a ball valve or an angle valve, preferably a ball valve. When disconnecting the test tube assembly from the pipeline to be tested, the main valve 3 is closed to prevent compressed gas loss caused by the continuous supply of compressed gas source 9.

[0031] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Pipeline leak detection equipment, characterized in that: include: Compressed air source (9); A main line (1), the main line (1) being connected to the compressed gas source (9), the compressed gas source (9) being capable of supplying compressed gas to the main line (1), the main line (1) being connected to a pressure gauge (2), the pressure gauge (2) being used to measure the gas pressure in the main line (1); A plurality of detection tube groups, wherein the inlet ends of the plurality of detection tube groups are all connected to the main pipeline (1), and the outlet ends of the plurality of detection tube groups are respectively connected to the inlet ends of the plurality of pipelines to be tested.

2. The pipeline leak detection equipment according to claim 1, characterized in that: The detection tube group comprises a flow guide tube (7) and a branch valve (5), wherein the branch valve (5) is connected between the inlet end of the flow guide tube (7) and the main line (1), and the branch valve (5) is used to open or close the gas flow path between the main line (1) and the flow guide tube (7), and the outlet end of the flow guide tube (7) is used to communicate with the inlet end of the pipeline to be tested.

3. The pipeline leak detection equipment according to claim 2, characterized in that: The branch valve (5) is a ball valve or an angle valve.

4. The pipeline leak detection equipment according to claim 2, characterized in that: The detection tube set further comprises a quick connector (6) and a quick-release connector (8), wherein the quick connector (6) and the quick-release connector (8) are respectively mounted at both ends of the guide tube (7), the guide tube (7) is connected to the branch valve (5) via the quick connector (6), and the guide tube (7) is communicated with the pipeline to be tested via the quick-release connector (8).

5. The pipeline leak detection equipment according to claim 2, characterized in that: It also includes a plug, which is used to seal the outlet end of the pipeline to be tested.

6. The pipeline leak detection equipment according to claim 1, characterized in that: It also includes a distributor (4), the main line (1) is connected to the input side of the distributor (4), and the plurality of detection tube groups are all connected to the output side of the distributor (4).

7. The pipeline leak detection equipment according to claim 6, characterized in that: The number of the detection tube groups is 5, and the 5 detection tube groups are all connected to the output side of the distributor (4).

8. The pipeline leak detection equipment according to claim 1, characterized in that: The compressed air source (9) is a compressed air pump, which is connected to the main pipeline (1) and is used to supply compressed air to the main pipeline (1).

9. The pipeline leak detection equipment according to claim 1, characterized in that: It also includes a main line valve (3), which is connected to the main line (1) and is used to open or close the gas flow path of the main line (1).

10. The pipeline leak detection equipment according to claim 9, characterized in that: The main valve (3) is a ball valve or an angle valve.

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