Pipeline connecting piece air tightness detection tool

Abstract

The utility model discloses an air tightness detection tool for a pipeline connecting piece, and belongs to the technical field of detection devices. The defects that in the prior art, a traditional pipeline connecting piece air tightness detection structure is complex, installation and disassembly are inconvenient, and operation is tedious are overcome. The main structure of the device comprises a pressure tank, a needle valve, a flow meter and a pipeline connecting piece, a first connecting tool and a second connecting tool are installed at the two ends of the pipeline connecting piece through hoops respectively, an air outlet of the pressure tank is connected with the needle valve through a pipeline, and the needle valve is connected with the first connecting tool through the flow meter. One end of the second connecting tool is provided with a pressure gauge used for detecting the pressure of gas in the pipeline connecting piece. The device is mainly used for detecting the air tightness of the pipeline connecting piece.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection devices, and in particular relates to an air tightness detection tool for pipeline connectors. Background Art

[0002] The gas turbine piping system mainly includes fuel pipelines, lubricating oil pipelines and air pipelines. The air pipelines are generally connected with pipe connectors, which are used for cooling and bleed air, sealing and bleed air, and oil and gas discharge of major components of the gas turbine to achieve normal operation of various components of the gas turbine.

[0003] During the gas turbine assembly process, since the pipe connectors are the last to be assembled after all major components are assembled, they need to be subjected to air tightness tests, leakage tests and pressure tests before assembly to ensure the reliability of the pipe connectors, thereby ensuring that the pipe connectors meet the working installation requirements.

[0004] The existing pipeline connector air tightness detection structure is complex, the installation and disassembly is inconvenient, and the operation is cumbersome. For example, the Chinese utility model patent with the authorization announcement number CN 220063271 U discloses a flexible quick-change, quick-release pipeline sealing detection tool with a step difference, which cannot adjust the gas pressure required by the pipeline connector. Although there is a quick-release joint, since the pipeline connector and the joint have no slots, when a large pressure is applied, the pipeline connector is easy to fall out due to excessive pressure. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an air tightness detection tool for pipeline connectors.

[0006] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0007] A pipeline connector air tightness detection tool comprises a pressure tank, a needle valve, a flow meter and a pipeline connector, wherein two ends of the pipeline connector are respectively installed with a connecting tool 1 and a connecting tool 2 through clamps, an air outlet of the pressure tank is connected to the needle valve through a pipeline, the needle valve is connected to the connecting tool 1 through the flow meter, and a pressure gauge for detecting the gas pressure in the pipeline connector is installed at one end of the connecting tool 2.

[0008] Preferably, a switch valve is provided between the air outlet of the pressure tank and the needle valve.

[0009] Preferably, the connection tool 1 and the connection tool 2 have the same structure, both comprising a pipe joint and a connecting piece, and the pipe joint is connected to the connecting piece.

[0010] Preferably, a protrusion is provided on the connecting piece, and a groove matching with the protrusion is provided on the pipeline connecting piece.

[0011] Preferably, the protrusion on the connecting piece is clamped in the groove on the pipe connecting piece, and the clamp is installed on the outer ring of the pipe connecting piece.

[0012] Preferably, the gas storage pressure of the pressure tank is not less than 3Mpa.

[0013] Preferably, the value range of the pressure gauge is not less than 3Mpa.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. Installed on the pipe connector by using connection tool 1 and connection tool 2 to ensure the air tightness of the pipe connector during inspection;

[0016] 2. By clamping the protrusion on the connector into the groove on the pipe connector, and the clamp is sleeved on the outer ring of the pipe connector, the air tightness during connection is ensured, and the installation and removal are fast;

[0017] 3. Use the pressure tank to provide gas for testing the air tightness of pipeline connectors;

[0018] 4. The gas pressure can be accurately adjusted through the needle valve;

[0019] 5. Use the flow meter to detect the gas flow in the pipeline;

[0020] In summary, the utility model has a simple structure, is quick to install and disassemble, and can visually check whether the pipeline connector has any form of damage and permanent deformation, which is intuitive and easy for operators to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the connecting tool 1 in the utility model;

[0023] Figure 3 It is a structural schematic diagram of the pipeline connecting piece in the utility model.

[0024] In the figure: 1. pressure tank; 2. switch valve; 3. needle valve; 4. flow meter; 5. pipe joint; 6. connecting piece; 7. pipeline connecting piece; 8. clamp; 9. pressure gauge; 10. protrusion; 11. groove; 12. connecting tool 1; 13. connecting tool 2. DETAILED DESCRIPTION

[0025] The present invention will be further described below through specific embodiments in conjunction with the accompanying drawings.

[0026] Embodiment 1:

[0027] like Figure 1 As shown, a pipeline connector air tightness detection tool comprises a pressure tank 1, a needle valve 3, a flow meter 4 and a pipeline connector 7, wherein two ends of the pipeline connector 7 are respectively installed with a connecting tool 12 and a connecting tool 2 13 through a clamp 8, an air outlet of the pressure tank 1 is connected to the needle valve 3 through a pipeline, the needle valve 3 is connected to the connecting tool 12 through the flow meter 4, and one end of the connecting tool 2 13 is installed with a pressure gauge 9 for detecting the gas pressure in the pipeline connector 7.

[0028] In this embodiment, the pressure tank 1 is used to provide gas for detecting the air tightness of the pipeline connector 7. The gas pressure can be accurately adjusted through the needle valve 3. The connecting tool 1 12 and the connecting tool 2 13 are installed on the pipeline connector 7 to ensure the air tightness of the pipeline connector 7 during detection. The flow meter 4 is used to detect the gas flow in the pipeline.

[0029] Embodiment 2:

[0030] A pipeline connector air tightness detection tool is different from Example 1 in that a switch valve 2 is provided between the air outlet of the pressure tank 1 and the needle valve 3, and the switch valve 2 is used to control the on and off of the pressure tank 1.

[0031] like Figure 2-3 As shown, the structures of the connecting tool 12 and the connecting tool 2 13 are the same, both of which include a pipe joint 5 and a connecting piece 6, and the pipe joint 5 is connected to the connecting piece 6; a protrusion 10 is provided on the connecting piece 6, and a groove 11 matching with the protrusion 10 is provided on the pipe connecting piece 7; the protrusion 10 on the connecting piece 6 is clamped in the groove 11 on the pipe connecting piece 7, and the clamp 8 is installed on the outer ring of the pipe connecting piece 7.

[0032] Furthermore, the gas storage pressure of the pressure tank 1 is not less than 3Mpa, and the value range of the pressure gauge 9 is not less than 3Mpa.

[0033] The detection principle of the utility model is:

[0034] First, the cavity of the pipeline connector 7 is sealed by connecting the first tool 12 and the second tool 13, that is, the protrusion 10 on the connector 6 is clamped in the groove 11 on the pipeline connector 7, and the clamp 8 is sleeved on the outer ring of the pipeline connector 7, and then the pressure tank 1, the switch valve 2, the needle valve 3, and the flow meter 4 are connected to the pipe joint 5 on the connecting tool 1 12 in sequence, and the pipe joint 5 on the connecting tool 2 13 is connected to the pressure gauge 9;

[0035] Secondly, open the pressure tank 1 and switch valve 2, slowly charge the pressure, and increase the pressure to the preset test pressure;

[0036] Again, adjust the needle valve 3. When the reading of the pressure gauge 9 remains constant, keep this state for 3 minutes, record the reading of the flow meter 4 at this time, and visually check whether the pipeline connector 7 has any form of damage and permanent deformation. During this process, the reading of the pressure gauge 9 cannot be lower than the preset test pressure, and the reading jump range shall not exceed 0.5Kpa;

[0037] Finally, if any of the above requirements are not met, the pipeline connector 7 is judged to be a defective product.

Claims

1. A gas tightness detection tool for pipeline connectors, characterized in that: The invention comprises a pressure tank (1), a needle valve (3), a flow meter (4) and a pipeline connector (7), wherein two ends of the pipeline connector (7) are respectively provided with a first connecting tool (12) and a second connecting tool (13) via a clamp (8), the gas outlet of the pressure tank (1) is connected to the needle valve (3) via a pipeline, the needle valve (3) is connected to the first connecting tool (12) via the flow meter (4), and one end of the second connecting tool (13) is provided with a pressure gauge (9) for detecting the gas pressure in the pipeline connector (7).

2. The gas tightness detection tool for pipeline connectors according to claim 1, characterized in that: A switch valve (2) is provided between the gas outlet of the pressure tank (1) and the needle valve (3).

3. The gas tightness detection tool for pipeline connectors according to claim 1, characterized in that: The structures of the connecting tool 1 (12) and the connecting tool 2 (13) are the same, both comprising a pipe joint (5) and a connecting piece (6), and the pipe joint (5) is connected to the connecting piece (6).

4. The gas tightness detection tool for pipeline connectors according to claim 3 is characterized in that: The connecting piece (6) is provided with a protrusion (10), and the pipeline connecting piece (7) is provided with a groove (11) matching with the protrusion (10).

5. The gas tightness detection tool for pipeline connectors according to claim 4, characterized in that: The protrusion (10) on the connecting piece (6) is clamped in the groove (11) on the pipeline connecting piece (7), and the clamp (8) is installed on the outer ring of the pipeline connecting piece (7).

6. The gas tightness detection tool for pipeline connectors according to any one of claims 1 to 5, characterized in that: The gas storage pressure of the pressure tank (1) is not less than 3Mpa.

7. The gas tightness detection tool for pipeline connectors according to any one of claims 1 to 5, characterized in that: The value range of the pressure gauge (9) is not less than 3Mpa.

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