Pipeline pressure testing device and application method
A pipeline pressure test, pipeline technology, applied in measuring devices, using stable tension/pressure testing material strength, instruments, etc., can solve the problems of inability to reuse, waste, waste of manpower and material resources, etc.
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Embodiment 1
[0025] A pipeline pressure testing device, which is suitable for pressure testing of various pipelines with a pressure lower than 3.0MPa, and is characterized in that it includes a pressure testing unit and a pressurizing unit; the pressurizing unit is connected to the pressure testing unit through a pipeline; The pressure testing unit is placed inside the pipeline 4 to be pressure tested, and the pressurizing unit is placed outside the pipeline 4 to be pressure tested. The pressure test unit includes a pressure test pipe body, an expansion pipe, a pipe clamp 5 and a tension bolt 6; the expansion pipe has toughness and can shrink and expand. The expansion tube is a rubber expansion tube 3; the rubber expansion tube 3 is provided with a water inlet 1; the pipeline clamp 5 is fixed on the outside of the pipeline 4 to be pressure tested by tension bolts 6. The body of the pressure test pipeline is a hollow circular tube with a diameter slightly smaller than that of the pipeline t...
Embodiment 2
[0027] A method for using a pipeline pressure test device, comprising the steps of:
[0028] (1) The pressure test unit is placed inside the pipeline to be tested, and the cylinder body of the pressure test pipeline in the pressure test unit is connected to the pipeline to be tested through a flange fixing plate and tension bolts;
[0029] (2) Pressurize the inside of the expansion tube through the booster pump, so that the expansion tube and the pipeline to be tested are completely squeezed and stop the pressurization;
[0030] (3) After the pressure inside the expansion tube stabilizes, pressurize the inside of the pressure test pipe body for pressure testing. When the pressure inside the pressure test pipe body is greater than 0.2MPa of the design test pressure of the pipeline to be tested, stop pressurizing.
Embodiment 3
[0032] Pressure test for pipelines with a design pressure of 1.5MPa:
[0033] Insert the cylinder body of the pressure test pipeline of the present application into the pipeline to be tested, and use the flange fixing plate on the pressure test device to fix the pressure test pipeline with tightening bolts to ensure that it will not loosen during the subsequent pressurization process. After the fixation is completed, inject water through the water inlet hole to the water inlet hole of the expansion pipe, and then pressurize the expansion pipe through the booster pump to completely squeeze the expansion pipe and the pressure test pipe to achieve a complete sealing effect, and then stop the pressurization , observe the pressure gauge, after the pressure in the expansion pipe is stabilized, open the water inlet valve of the pipe, fill the pipe with water, and then pressurize the pressure test pipe with a booster pump. If the design test pressure of the pipe is 1.5MPa, the test pre...
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