Test mechanism for in-service valve closing action of axial-flow type check valve

Abstract

The invention relates to the technical field of check valves, and discloses a test mechanism for in-service valve closing action of an an axial-flow type check valve. The test mechanism comprises a base, the upper end of the base is fixedly connected with two symmetrically-arranged supporting plates, two guide pipes are slidably connected between the two supporting plates, the two guide pipes penetrate through the supporting plates, the opposite ends of the two guide pipes are fixedly connected with connectors, the opposite ends of the two connectors are jointly connected with an axial-flow type check valve body in a clamped mode, the ends, away from the axial-flow type check valve body, of the guide pipes fixedly communicate with a test connecting pipe, the upper ends of the two supporting plates are jointly and fixedly connected with a top plate, and the upper end of the top plate is fixedly connected with an installation surrounding plate. A moving rod is fixedly connected to the guide pipe, a channel is formed in the position, corresponding to the moving rod, of the top plate, and the upper end of the moving rod penetrates through the channel and is fixedly connected with a threaded sleeve. According to the test mechanism for the in-service valve closing action of the axial-flow type check valve, the testing connectors can be rapidly connected to the two ends of the check valve, and the testing efficiency is high.

Description

technical field [0001] The invention relates to the technical field of check valves, in particular to a test mechanism for the in-service valve closing action of an axial flow check valve. Background technique [0002] In general, the action performance test of the check valve that relies on the medium force needs to install the valve to be tested on a special test bench for testing. For equipment connected by welding between valves and pipes, pipes and valves need to be cut and welded every time they are overhauled. For nuclear power plants or some important equipment, the test window time is too long, and the welding, non-destructive testing and test cycles after valve reset are too complicated. , and the risk is higher. [0003] In the patent No. CN111649934A, an axial flow check valve in-service valve closing action test structure used in the field of valve on-line detection is disclosed. The medium pressure surface of the valve disc is connected with a guide rod, and t...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a test mechanism for the in-service valve closing action of an axial flow check valve, which can quickly connect the test joints to both ends of the check valve, and has high test efficiency, etc. Advantages, it solves the problem that in the existing scheme, it is impossible to quickly connect the test connector to both ends of the check valve, which makes the test efficiency low

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