Corrugated pipe damage detecting instrument

Abstract

The invention belongs to instruments, and discloses a corrugated pipe damage detecting instrument. The corrugated pipe damage detecting instrument is characterized in that the corrugated pipe damage detecting instrument is composed of a shell, a piston, a piston rod with a shaft shoulder, a corrugated pipe, a spiral spring and a capping plug. The shell is provided with a step hole penetrating through the two ends of the shell, and one end of the step hole is a neck part in threaded connection with a drainage guide hole in the valve deck of a corrugated pipe valve. The capping plug seals the piston, the piston rod, the corrugated pipe and the spiral spring in the step hole, the piston and the corrugated pipe are arranged on the rod body on the two sides of the shaft shoulder of the piston rod respectively in a sleeved mode, one end of the corrugated pipe is in sealing welding with the shaft shoulder, and the other end is in sealing welding with the end surface of the capping plug. The spiral spring is arranged on the periphery of the corrugated pipe in a sleeved mode, the two ends of the spiral spring abut against the piston and the end face of the capping plug respectively, and the tail end of the piston rod is flush with the outer end face of the capping plug or extends outwards for a certain length L1. The effects that the breakage of a valve corrugated pipe can be found out in time at an early stage without dismounting and media leakage is prevented from endangering the human body safety and the property safety in a detection process are achieved.

Description

Technical field: [0001] The invention belongs to the category of instruments, in particular to a detection instrument for detecting the rupture of bellows valves. Background technique: [0002] In nuclear power, petroleum, chemical and other industries, bellows valves are often used to control the transmission of gases and media in piping systems that transport hazardous, toxic, or flammable, high-temperature, high-pressure liquid or gas media. Due to the long-term operation of the bellows, damage will inevitably occur; the packing in the valve will also age. Because the bellows and packing are located inside the valve body, it is difficult to detect, and it is often not detected until the conveyed medium leaks from the valve. But this can easily lead to safety accidents. For this reason, how to detect the damage of valve bellows in an early stage has become a major problem in the industry. Invention content: [0003] The object of the present invention is to provide a ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a bellows breakage detector, which solves the technical problems of early detection of valve bellows breakage without disassembly and avoiding medium leakage that endangers personal and property safety during the detection process.

Images