Pressure control system and method with pressure test medium capable of conducting bidirectional flow

Abstract

The invention discloses a pressure control system and method with a pressure test medium capable of conducting bidirectional flow, and belongs to the technical field of hydraulic tests. The pressure control system comprises a container to be tested and a water tank. At least one pressure control pipeline is connected between the container to be tested and the water tank. Each pressure control pipeline comprises a plunger cavity, a liquid inlet pipe and a liquid outlet pipe. The plunger cavities are internally provided with plungers in a matched mode. The plunger cavities are connected to the container to be tested through the liquid outlet pipes. The liquid outlet pipes are provided with water outlet stop valves. The plunger cavities are connected to the water tank through the liquid inlet pipes, and the liquid inlet pipes are provided with water inlet stop valves. According to the pressure control system and method, the stop valves forced to be opened and closed are utilized to replace water inlet valves and water outlet valves, the plungers are controlled to move through pressure feedback so that the medium can flow forward and reversely, and the purpose that the rate of pressure rise and the rate of pressure reduction can be effectively controlled is achieved; the pressure can be controlled more precisely, and the control accuracy reaches + / -0.02 MPa; automatic pressure supplement or pressure reduction is achieved so as to achieve stable control over the pressure; the technological level of a traditional pressure test technology is broken through.

Description

Technical field [0001] The present invention involves the field of hydraulic testing technology, especially a two -way flow of the working medium of plunger pumps to effectively control the pressure control technology of the boost rate and the pressure of lowering blood pressure or constant pressure. Background technique [0002] The pressure testing technology is to use the high -pressure source equipment (the host, the following is replaced by the host) to inject the testing medium into the test container to increase the pressure in the test container, so as to detect the intensity of the pressure container and the purpose of the sealing performanceEssenceThe steps generally include water injection, pressure, pressure, and pressure degradation. Its technical requirements are in line with the standard content of JB / T12013-2014 "Self-Control Test Compressor".At present, an electric pressure test pump or pneumatic pressure test pump is generally used as the host. The unilateral or...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a pressure control system and method in which the pressure test medium can flow in both directions in view of the above-mentioned problems, mainly to solve the technical problem that it is difficult to accurately control the boosting rate in the prior art; The existing technology cannot realize effective control of the depressurization process, and cannot complete the step-down depressurization control technology problem after depressurization and pressure maintenance; it also solves the problem of the prior art when the pressure is maintained, because the medium cannot flow in the opposite direction, and only has one-way compensation. It does not have the technical problem of reducing the pressure to keep the system pressure constant; it also solves the technical problem that it is difficult to improve the pressure control accuracy in the existing technology

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