Single-damping check valve fluid blocking test system and test method thereof

Abstract

The invention belongs to the technical field of fluid blocking tests, and particularly relates to a single-damping check valve fluid blocking test system and a test method thereof. The system comprises a damping check valve and a pipe explosion simulation assembly, an inlet of the pipe explosion simulation assembly is communicated with a valve body inlet of the damping check valve, a valve body outlet of the damping check valve is communicated with an outlet of an energy accumulator through a switching valve SV6, an inlet of the energy accumulator is provided with a gas path branch and a liquid path branch, the gas path branch is communicated with a gas source through a regulating valve CV1, and the liquid path branch is communicated with a liquid path. The liquid path branch is communicated with the water storage container through a switch valve SV4, a water pump and a switch valve SV3; a pressure regulating cavity of the pipe explosion simulation assembly is communicated with an air source through a switch valve SV1 and a regulating valve CV2 in sequence; the system also includes a bridging waterway. According to the system, the built-in pipe explosion simulation assembly is used for accurately controlling the pipe explosion pressure and the storage time in the pipeline, and high accuracy of damping check valve test data can be synchronously ensured while the cost performance is ensured.

Description

technical field [0001] The invention belongs to the technical field of fluid blocking test, in particular to a fluid blocking test system and a test method for a single damping check valve. Background technique [0002] Rapid changes in mass flow in high-pressure lines can cause pressure fluctuations and pressures that exceed the allowable strength limits of the pipe material. Therefore, it is particularly important to dampen the closing behavior of the check valve after a rupture in a high-pressure pipeline. The damping check valve is equipped with a damping mechanism inside, which can customize the closing time according to the user's use requirements to keep the fluid dynamic load from the pressure wave within the limit, eliminate high-pressure transients in the water supply line, and at the same time can close as quickly as possible, to minimize water loss. At this stage, the closing performance parameters of the damping check valve need to be obtained through tests. ...

AI Technical Summary

Problems solved by technology

The check valve fluid blocking test methods disclosed in CN104359695B and CN109029943A all change the flow direction of the test medium to establish test conditions through the rapid opening and closing switching of water pumps and valves. Due to the limitation of valve caliber, it is impossible to truly simulate even millisecond-level pipeline rupture accident conditions, and the cost of the test system is high. Therefore, there is an urgent need for a check valve fluid blocking test method that is suitable for actual working conditions and has high economic benefits.

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