Pressure test system and method used for plastic pipe acceptance

Abstract

The invention relates to the technical field of plastic pipe acceptance and provides a pressure test system and method used for plastic pipe acceptance. The system can perform an air tightness test, ahydrostatic pressure test and an instant blasting test, when different plastic pipe acceptance tests are performed, a pipe and any other equipment do not need to be disassembled, and switching between different tests can be realized only by controlling a valve on a pipeline of the system, so that workload is effectively reduced, and accuracy of an acceptance structure is guaranteed; and the system comprises a pipe plugging device, an air compressor, a water pump and a gas-water storage tank, wherein the pipe plugging device is used for supporting and plugging a pressure test pipe and bearinga longitudinal load produced due to a pressure test, the air compressor is used for providing a pressure for the pressure test system, the water pump is used for supplying constant temperature water to the pressure test pipe and the pipe plugging device, and the gas-water storage tank is used for storing and transmitting the pressure. The system provided by the invention is especially applicable to multiple pressure test detections in the plastic pipe acceptance and has a relatively high social use value and a broad application prospect.

Description

technical field [0001] The invention relates to the technical field of plastic pipe inspection and acceptance, in particular to a plastic pipe air tightness test, hydrostatic test and instantaneous blast test system and method. Background technique [0002] When checking and accepting pipelines, it is necessary to conduct air tightness tests, pressure tests, and instantaneous blasting tests on the pipelines. The existing test system is mainly composed of testing machines, constant temperature water tanks, and pipes to be tested. The testing machine includes an air tightness testing machine, a pressure testing machine and an instantaneous burst testing machine. Among them, the air tightness testing machine is used for the air tightness test; the pressure testing machine is used for the pressure test, but multiple sets of devices increase the cost; The burst test requires rapid and continuous application of liquid pressure to the pipe. [0003] The existing test system is not...

AI Technical Summary

Problems solved by technology

The testing machine includes an air tightness testing machine, a pressure testing machine and an instantaneous burst testing machine. Among them, the air tightness testing machine is used for the air tightness test; the pressure testing machine is used for the pressure test, but multiple sets of devices increase the cost; The burst test requires rapid and continuous application of liquid pressure to the pipe

[0003] The existing test system is not designed to instantly pressurize the device, so the blasting test carried out by the commonly used test system is accurately a destructive test, not an instantaneous burst test; The diameter change of the pipe, and the test pipe must be pretreated before the test, so that the pipe reaches the test temperature and then connected to the pressure system. During this process, the pipe temperature will not reach the specified test temperature during the test due to heat dissipation.

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