Bending and torsion test method of emergency shut-off valve multifunctional test bench

Abstract

The invention discloses a multi-functional test stand and bending and torsion test method of an emergency cut-off valve. According to the multi-functional test stand of the emergency cut-off valve, one end of the emergency cut-off valve is in butt joint with a flange interface of a positioning clamp, so that pivot positioning of the one end of the emergency cut-off valve can be realized, and the other end of the emergency cut-off valve is arranged freely; a braking mechanism is adopted to apply an acting force to the free end of the emergency cut-off valve until a cut-off groove is fractured; and therefore, a test on the emergency cut-off valve can be realized. According to the bending test method of the emergency cut-off valve, an assembly and disassembly pipe connecting end of the emergency cut-off valve is made to rotate axially with a tank body connection end adopted as a center until the cut-off groove is fractured. According to the torsion test method of the emergency cut-off valve, the assembly and disassembly pipe connecting end of the emergency cut-off valve is made to rotate radially with the tank body connection end adopted as a center until the cut-off groove is fractured, and actually-borne internal pressure of the emergency cut-off valve in a turned-off state is simulated; the compression resistance index of the cut-off groove can be obtained based on accurate analysis of a test data acquisition module; and whether the cut-off valve of the emergency cut-off valve will be fractured fast in the range of a specified acting force can be detected in a most authentic manner.

Description

technical field [0001] The invention relates to a multifunctional test bench, in particular to a multifunctional test bench for an emergency cut-off valve and a bending and twisting test method thereof. Background technique [0002] The emergency shut-off valve is one of the main safety accessories of tank trucks for dangerous goods. It has excellent technical performance, low load loss and high reliability. (or may lead to) fire, explosion or poisoning accidents, it is used to cut off the source of dangerous materials upstream, avoid the expansion of the scope of the accident, control the impact of the accident, and reduce the loss of the accident. In the hydrocarbon processing industry with petroleum and natural gas as the main raw materials, emergency shut-off valves are widely used in the processing, storage and transportation of high-risk materials. Its reliability will directly affect the safety of the equipment, so the qualification inspection of the emergency shut-o...

AI Technical Summary

Problems solved by technology

At present, the detection methods of the inspection and testing organization are backward. For example, the pressure test is generally used for the sealing of the shut-off valve. The inspection accuracy of the entire shut-off valve is poor, and the existing detection device is to detect the body of the emergency shut-off valve in a normal environment. Compared with the actual application, the test results obtained are quite different, so that the emergency shut-off valve cannot be accurately tested

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