Control device for main steam valve of horizontal version oil control type steam turbine

Abstract

The invention discloses a control device for a main steam valve of a horizontal version oil control type steam turbine. According to the control device, time and effort are saved, labor intensity of operators is greatly reduced, and the operators can rapidly close the main steam valve of a steam turbine to avoid the occurrence of accidents and dangers when the steam turbine has a failure. The control device comprises an oil cylinder, wherein an oil inlet is formed in the left end of the side wall of the oil cylinder; an oil return port is formed in the right end of the side wall of the oil cylinder; a piston is arranged in the oil cylinder; a control box with a shaft hole is arranged on the left end face of the piston; a compression spring I is connected between the control box and the inner wall at the left end of the oil cylinder; a control rod inserted in the shaft hole of the control box is mounted at the left end of the oil cylinder through threads; a sliding sleeve is arranged in the shaft hole of the control box; a compression spring II is connected between the control rod and the sliding sleeve; an axial penetrating oil through hole I is formed in a part, corresponding to the shaft hole, on the piston; an oil through hole II is formed in the side wall of the sliding sleeve; an oil through hole III is formed in the side wall of the control box; an air valve stem mounted on the right end face of the piston penetrates through the right end of the oil cylinder.

Description

technical field [0001] The invention relates to a main steam valve of a steam turbine, in particular to a control device for a main steam valve of a horizontal oil-controlled steam turbine. Background technique [0002] With the continuous development of my country's chemical industry, oil refining and other industries, industrial steam turbines are widely used in industry as the control driving power of generators, water pumps, fans and compressors. At present, the main steam valve control device of a steam turbine is mainly composed of a valve body, a control rod installed on the valve body, and a valve core. It is time-consuming and labor-intensive to close, and the labor intensity of the operator is high, especially when the steam turbine fails, because the operator cannot quickly close the main steam valve of the steam turbine, resulting in the risk of accidents. Contents of the invention [0003] The present invention aims to solve the above technical problems, and ...

AI Technical Summary

Problems solved by technology

At present, the main steam valve control device of a steam turbine is mainly composed of a valve body, a control rod installed on the valve body, and a valve core. It is time-consuming and labor-intensive to close, and the labor intensity of the operator is high, especially when the steam turbine fails, because the operator cannot quickly close the main steam valve of the steam turbine, resulting in the risk of accidents

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