Concentricity adjustment device for booster pump of 1,000MW thermal power unit

Abstract

The invention discloses a concentricity adjustment device for a booster pump of a 1,000MW thermal power unit. The concentricity adjustment device comprises a fixed plate, an adjustment plate and a connecting rod, wherein a plurality of through holes are formed in the fixed plate in the length direction; a plurality of waist-shaped positioning holes corresponding to the through holes are formed in the lower part of the adjustment plate; one end of the connecting rod penetrates through the through holes and the waist-shaped positioning holes corresponding to the through holes; the adjustment plate is arranged on the connecting rod through an adjustment part; a fine adjustment part and a rough adjustment part are arranged at the upper part of the adjustment plate; and the fine adjustment part is arranged over the rough adjustment part. The concentricity adjustment device is reasonable in design and simple in structure; the concentricity of a pump shaft and a motor shaft can be quickly and accurately adjusted to ensure the pump shaft and the motor shaft to be concentric; the appearance of a pump body is not destroyed; and the service life of the pump is prolonged.

Description

technical field [0001] The invention relates to the technical field of concentricity adjusting devices, in particular to a concentricity adjusting device for the front pump of a 1000MW thermal power unit. Background technique [0002] The high-temperature and high-pressure prepump used in thermal power plants belongs to high-end precision rotating machinery, and the prepump is driven by a motor. Generally speaking, the pre-pump and the motor are connected by a coupling, and ensuring the concentricity of the motor and the central shaft of the coupling is the precondition to ensure the normal operation of the pre-pump and the normal operation of the supporting high temperature and high pressure feed pump. It ensures the normal operation of the entire power plant generator set. [0003] When the traditional front pump pump shaft and the motor rotor shaft are centered, because there is no adjustment position on the pump seat, it has always been very difficult to center. Genera...

AI Technical Summary

Problems solved by technology

Doing so will not only affect the appearance and quality of the pump, but also affect the service life of the pump

At the same time, because the sledgehammer smashes the pump body, it uses brute force, and the concentricity cannot be adjusted accurately. The concentricity precision of the pump and the motor is low, and it takes a long time and the assembly efficiency is low.

After assembly, the unit runs for a long time, and the concentricity deviation between the pump and the motor will fluctuate greatly, resulting in the failure of the pump to operate normally, and even affecting the normal operation of the entire unit, seriously affecting the service life of the pump

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