A pipeline pressure testing system

Abstract

The utility model discloses a pipeline pressure test system, including pipe fitting, compressed air filter, safety valve, the pipe fitting one end has flange plate A one end through bolt connection, flange plate A other end vertical welding has the air inlet no.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing equipment technology, and in particular to a pipeline pressure testing system. Background Technology

[0002] Pipelines are widely used in industrial production and daily life, covering a wide range of fields from water and gas supply pipelines to transportation pipelines in the petroleum and chemical industries. Whether before being put into use or after a period of use, pipelines must undergo pressure testing to ensure their sealing and pressure-bearing capacity meet standards, thereby preventing safety accidents such as leaks and bursts.

[0003] However, existing pipeline pressure testing systems have many shortcomings. During the inflation process, the only way to identify leaks in the pipeline is by visual inspection and experience. This method is not only prone to omissions, but also makes it difficult to accurately control the amount of gas injected into the pipeline, leading to excessive pressure and potentially causing an explosion. Utility Model Content

[0004] The present invention aims to solve the problems mentioned in the background art by providing a pipeline pressure testing system to address the aforementioned technical issues.

[0005] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a pipeline pressure testing system, comprising a pipe fitting, a compressed air filter, and a safety valve. One end of the pipe fitting is bolted to a flange A; the other end of the flange A is vertically welded to an air inlet; the other end of the pipe fitting is threadedly connected to an air inlet II of the compressed air filter; the air outlet II of the compressed air filter is threadedly connected to one end of a tee fitting; the air outlet III of the tee fitting is threadedly connected to one end of the safety valve; a pressure gauge is provided on the pipe wall of the tee fitting near the safety valve; the port of the tee fitting near the air outlet III is threadedly connected to one end of a flange D; the other end of the flange D is vertically welded to an air outlet; one port of the safety valve is threadedly connected to one end of a flange C; the other end of the flange C is vertically welded to the short end of a bend.

[0006] Furthermore, an intake valve is provided on one side of the first air inlet; and an exhaust valve is provided on one side of the first air outlet.

[0007] Furthermore, the compressed air filter is provided with a pressure relief valve on the side near the second air inlet; the lower end of the compressed air filter is provided with a filter element replacement port; the filter element replacement port is threadedly connected to flange B.

[0008] Furthermore, the pressure gauge is connected to a riser pipe that is vertically welded to a tee fitting for pressure measurement; a handwheel is provided on one side of the pressure gauge.

[0009] Compared with the prior art, this utility model has the following advantages: This invention achieves precise control of the gas volume within the pipeline through the precise coordination of components such as a compressed air filter, safety valve, and pressure gauge, effectively preventing explosions caused by excessive gas pressure and improving the safety of the testing process. Secondly, the inclusion of inlet and outlet valves allows for precise control of both the inflation and deflation processes, further enhancing the accuracy and reliability of the test. Furthermore, the compressed air filter is equipped with a pressure relief valve and a filter element replacement port, enabling timely pressure relief in case of excessive pressure and facilitating filter element replacement, ensuring the continuous and stable operation of the testing system. This device not only improves the safety and accuracy of the test but also facilitates equipment maintenance, demonstrating significant technological advancement and practical value. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a rear view schematic diagram of the structure of this utility model.

[0011] Legend: 1-Flange A, 101-Inlet 1, 102-Inlet Valve, 2-Fitting, 3-Compressed Air Filter, 301-Inlet 2, 302-Outlet 2, 303-Filter Replacement Port, 304-Flange B, 305-Pressure Relief Valve, 4-Tee Fitting, 5-Riser, 6-Pressure Gauge, 7-Outlet 3, 8-Safety Valve, 9-Flange C, 10-Elbow, 11-Handwheel, 12-Flange D, 1201-Outlet 1, 1202-Exhaust Valve. Detailed Implementation

[0012] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments: A pipeline pressure testing system includes a pipe fitting 2, a compressed air filter 3, and a safety valve 8. One end of the pipe fitting 2 is bolted to one end of a flange A1, which facilitates disassembly and replacement, increases the flexibility and maintainability of the system, and ensures the tightness of the bolt connection to prevent leakage during high-pressure testing. An air inlet 101 is vertically welded to the other end of the flange A1. The other end of the pipe fitting 2 is threadedly connected to the second air inlet 301 of the compressed air filter 3. The second air outlet 302 of the compressed air filter 3 is threadedly connected to one end of a tee fitting 4, facilitating filter replacement and... Cleaning and pressure testing personnel need to regularly check and replace the filter element to maintain the filtration effect; the outlet 7 of the tee fitting 4 is threadedly connected to one end of the safety valve 8; a pressure gauge 6 is installed on the pipe wall of the tee fitting 4 near the safety valve 8. The safety valve 8 can ensure that the system can automatically release pressure in the event of overpressure, protecting the system safety. The pressure gauge 6 can monitor the pressure in the system in real time, making it convenient for operators to control the test pressure; the port of the tee fitting 4 near the outlet 7 is threadedly connected to one end of the flange D12; the other end of the flange D12 is vertically welded with an outlet 1201; one side of the safety valve 8 is threadedly connected to one end of the flange C9; the other end of the flange C9 is vertically welded to the short end of the bend 10.

[0013] Specifically, an intake valve 102 is provided on one side of the air inlet 101; and an exhaust valve 1202 is provided on one side of the air outlet 1201.

[0014] Furthermore, the compressed air filter 3 is provided with a pressure relief valve 305 on the side near the air inlet 301, which can automatically release pressure when the internal pressure of the filter is too high, so as to avoid damage to the filter; the lower end of the compressed air filter 3 is provided with a filter element replacement port 303; the filter element replacement port 303 is threadedly connected to the flange B304.

[0015] Furthermore, the pressure gauge 6 is connected to the pressure measuring device via a riser 5 vertically welded to the tee fitting 4; a handwheel 11 is provided on one side of the pressure gauge 6 for easy adjustment by the pressure testing personnel.

[0016] During use, first ensure that all connections (bolted connections, welded connections, etc.) are correctly installed and leak-free. Sealing gaskets are placed between the flange and pipe fittings, compressed air filter 3, tee fitting 4, and safety valve 8 to ensure airtightness. Open the inlet valve 102 and connect the airlock via a hose to allow compressed air to enter the system. Connect the other end of the hose to the pipe fitting whose airtightness needs to be checked. Open the exhaust valve 1202 and observe the pressure gauge 6. Slowly adjust the inlet valve 102 to gradually increase the system pressure until the required test pressure value is reached. During testing, the reading of pressure gauge 6 is continuously monitored to ensure that the pressure remains within a safe range. If the system pressure exceeds the set value, safety valve 8 will automatically open to release pressure, which will be discharged to the outside from the outlet of bend 11. At the same time, pressure gauge 6 will display the pressure change. If the filter element needs to be replaced, close pressure relief valve 305, remove flange B304, take out the old filter element, install the new filter element, and reconnect flange B304. The entire system is wall-mounted to save space and facilitates operation. The long end of bend 11 passes through the wall and extends outside the wall.

[0017] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. A pipeline pressure testing system, comprising pipe fittings (2), a compressed air filter (3), and a safety valve (8), characterized in that: One end of the pipe fitting (2) is bolted to one end of the flange A (1); the other end of the flange A (1) is vertically welded to an air inlet (101); the other end of the pipe fitting (2) is threaded to the air inlet (301) of the compressed air filter (3); the air outlet (302) of the compressed air filter (3) is threaded to one end of the tee fitting (4); the air outlet (7) of the tee fitting (4) is threaded to one end of the safety valve (8). The three-way fitting (4) is connected by a threaded connection; a pressure gauge (6) is provided on the pipe wall near the safety valve (8); the port of the three-way fitting (4) near the outlet three (7) is threadedly connected to one end of the flange D (12); the other end of the flange D (12) is vertically welded with an outlet one (1201); one side port of the safety valve (8) is threadedly connected to one end of the flange C (9); the other end of the flange C (9) is vertically welded to the short end of the bend (10).

2. The pipeline pressure testing system according to claim 1, characterized in that: An air inlet valve (102) is provided on one side of the air inlet (101); an air outlet valve (1202) is provided on one side of the air outlet (1201).

3. The pipeline pressure testing system according to claim 1, characterized in that: The compressed air filter (3) is provided with a pressure relief valve (305) on the side near the air inlet (301); the lower end of the compressed air filter (3) is provided with a filter element replacement port (303); the filter element replacement port (303) is threadedly connected to the flange B (304).

4. The pipeline pressure testing system according to claim 1, characterized in that: The pressure gauge (6) is connected to the pressure measuring pipe (5) vertically welded to the tee fitting (4); a handwheel (11) is provided on one side of the pressure gauge (6).

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