Hydraulic test pressure control system

Abstract

The invention relates to the technical field of a container hydraulic test and particularly relates to a hydraulic test pressure control system. The control system comprises a test body, a stop valve, a pressure pump and a water tank, wherein the test body is connected with the water tank through the pressure pump, the pipeline where the stop valve and the pressure pump are connected is also provided with a flow direction control unit, and the pipeline of the pressure pump and the flow direction control unit is also provided with a pipeline which is communicated with the upper end of the water tank through an adjusting valve. The control system can effectively realize operation such as establishing initial pressure, boost, dwell, pressure relief and the like; the pressure of the test body can be boosted stably and the safety of a hydraulic test is improved through effective adjustment during a boost process; and during a pressure relief process, a pressure relief rate can be controlled through a pressure reduction rate control unit so that not only can the test time be shortened, the safety of the test body is also ensured.

Description

technical field [0001] The invention relates to the technical field of hydraulic test of containers, in particular to a pressure control system for hydraulic test. Background technique [0002] The hydrostatic test of a large pressure vessel usually includes multiple processes such as establishing initial pressure, increasing pressure, maintaining pressure, and releasing pressure. At the beginning of the hydraulic test, the test body is filled with water and exhausted with a large flow rate, and the initial pressure of the test will be established in the body at this time. Boosting means that the pressure inside the body is gradually increased during the hydrostatic test. During this process, the pressure change rate should meet the regulations to prevent the pressure from rising too fast. When the pressure in the test body reaches a certain value, stop the pressure increase and isolate the test body, keep the pressure in the test body for a certain period of time, and obse...

AI Technical Summary

Problems solved by technology

[0003] The hydraulic test device currently used has a simple structure and a single adjustment method. It is difficult to adjust and control the rate of pressure increase and decrease during the hydraulic test process, which will easily lead to the pressure change rate in the body exceeding the limit, causing leakage of the body or the test circuit.

At the end of the pressure holding stage and in the process of continuing to increase the pressure, the pressure imbalance between the main body and the pressure pump will cause the pressure inside the main body to fluctuate.

If this kind of fluctuation is not handled properly, it will easily cause leakage of the test body or the test circuit, which will affect the safety. At the same time, the continuity of the boosting process will be damaged, which will affect the evaluation of the test results.

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