Valve emergency cut-off device

Abstract

The invention discloses a valve emergency cut-off device. A work frame is included. A piston type air motor is fixedly arranged on one side of the bottom end in the work frame through an installing base. The output end of the piston type air motor is fixedly provided with a first rotation rod through a coupler. The middle portion of the inner side wall of one side in the work frame is fixedly provided with a first fixing rod. The end, away from the inner side wall of the work frame, of the first fixing rod is fixedly provided with a first bearing. The middle portion of the first rotation rod is movably arranged in the first bearing. The top end of the first rotation rod is fixedly provided with a third gear. A second fixing rod is fixedly arranged on one side of the top face in the work frame. A fixing leg is fixedly arranged at the top end of the work frame, the fixing leg is used for fixedly installing an electric device, meanwhile, a valve is fixedly arranged at the top end of the electric device, accordingly, the electric device can be conveniently fixed, and meanwhile the electric device can be conveniently manually switched off.

Description

technical field [0001] The invention relates to the technical field of nuclear-grade multi-turn valves, in particular to an emergency cut-off device for valves. Background technique [0002] Valves are divided into many types and their uses are also different, so the requirements for testing and the materials made will be different. Valves are also divided into nuclear-grade and non-nuclear-grade valves. The material and test ratio of nuclear-grade valves are higher than those of non-nuclear At the same time, the design life of conventional valves is 30 years and the design life of nuclear-grade valves is 50 years, and nuclear-grade multi-turn valves are mostly used in important places such as nuclear power plants; [0003] A traditional emergency cut-off device for a valve has the following deficiencies; [0004] Many existing emergency shut-off devices may not be able to close the emergency valve during emergency shut-off, and some nuclear-grade multi-turn valves are clos...

AI Technical Summary

Problems solved by technology

[0004] Many existing emergency shut-off devices may not be able to close the emergency valve during emergency shut-off, and some nuclear-grade multi-turn valves are closed, which we cannot detect from the outside. If there is some emergency situation, the valve needs to be closed and the valve cannot If we can't detect it, it will cause great harm, and many existing emergency shut-off devices cannot meet this point

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