Adjustable push-pull device of steam turbine

Abstract

The invention relates to an adjustable push-pull device of a steam turbine. The adjustable push-pull device comprises an inserting piece and an externally-wrapping piece; the inserting piece stretchesinto a sinking table of the externally-wrapping piece; two T-shaped positioning keys are arranged between the inserting piece and the externally-wrapping piece and located on the two sides of the inserting piece; one end of the horizontal part of each T-shaped positioning key stretches into a corresponding first key groove in the upper surface of the inserting piece and is connected with the first key groove in the upper surface of the inserting piece through a first fixing bolt; the other end of the horizontal part of each T-shaped positioning key stretches into a corresponding second key groove in the upper surface of the sinking table; one side of a vertical part of each T-shaped positioning key stretches into a corresponding first key groove in one outer side surface of the insertingpiece, wherein an adjusting gasket is arranged between the side of the vertical part of the T-shaped positioning key and the first key groove in the outer side surface of the inserting piece; the adjusting gaskets are connected with the vertical parts of the T-shaped positioning keys through second fixing bolts; and the other side of the vertical part of each T-shaped positioning key stretches into a corresponding second key groove in one inner side surface of the sinking table. Deflection and overturning moment can be avoided, and mounting and adjusting are easy, convenient and easy to implement.

Description

technical field [0001] The invention relates to an adjustable push-pull device for a steam turbine. Background technique [0002] The dead point of the steam turbine is generally located at the intersection of the transverse key of the rear base frame and the center line of the steam turbine. When the steam turbine is started, high-temperature and high-pressure steam is introduced to do work. The introduction of steam makes the temperature of the unit rise rapidly, causing a large thermal expansion. The steam turbine expands and elongates toward the machine nose with the dead point as the fixed point, which causes the cylinder to push the front bearing housing to move forward. Likewise, a drop in turbine temperature during shutdown causes the cylinders to shrink. The steam turbine shortens toward the motor end with the dead point as the fixed point, which causes the cylinder to pull the front bearing housing to move backward. The push-pull action of the cylinder to the f...

AI Technical Summary

Problems solved by technology

This structure has no overturning moment, but once the pin hole is drilled and reamed, the centering position is fixed and cannot be adjusted.

And due to the limited space, it is difficult to install the center beam

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