Factory building structure vibration control method of pump station

Abstract

The invention discloses a factory building structure vibration control method of a pump station. According to the factory building structure vibration control method of the pump station, dominant natural vibration frequency of a structure system is adjusted through modifying a structure section size and increasing a counterweight, the structure system and dominant frequency of external load excitation are enabled to be staggered far, and vibration control is achieved; and main natural dominant vibration frequency of a factory building structure and pulsation dominant frequency of a machine group transient-state process are staggered through structural dynamic optimization design, and reducing or controlling structure vibration peak values is achieved. According to the factory building structure vibration control method of the pump station provided by the invention, the vibration problem of the factory building structure is regarded as a forced vibration problem under the action of external random vibration sources, and thus according to basic theories and methods of structural dynamics, a most basic principle of reducing or suppressing structure vibration is to adjust and control dynamic characteristics of the structure to enable the dominant natural vibration frequency thereof to be as far as possible from the dominant excitation vibration frequency of loads on a frequency spectrum.

Description

technical field [0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a method for controlling the structural vibration of a powerhouse of a pumping station. Background technique [0002] The dry river pumping station is a large pumping station, and there are no national regulations, norms or standards to follow from the hydraulic system to the dynamic design of the plant structure. If we refer to the operation of the pumped storage power stations that have been put into operation in In the process of changing working conditions of the unit, there are vibration problems to varying degrees. [0003] Especially for pumped storage power stations and pumping stations operated by variable frequency speed regulation, due to their characteristics of high speed, large capacity, high water head, and frequent changes in pump speed, the vibration problem of pump sets and workshops is more prominent. Vibration will not only ma...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the problem existing in the prior art is that it is impossible to control the vibration instability of the water pump under certain operating conditions, thereby reducing the vibration of the plant structure.

Images