Pump pool inherent frequency self-adapting method and device

Abstract

The invention discloses a pump pool inherent frequency self-adapting method and device, wherein the method comprises the following steps: reasonably selecting liquid with a certain density and volume according to submerse pump speed with different models, and injecting the liquid in a frequency-modulated tube, so as to enable the inherent frequency of a same pump pool device to be adjustable, prevent the pump pool and the submerse pump from resonance, decrease the vibration amplitude of a pump pool, improve the safe reliability and service life of the pump pool to meet the requirement of submersible pump speed with different models. The device provided by the invention can be used to a pump pool device matched with the immersed pump.

Description

technical field [0001] The invention relates to a container for placing a submersible pump, in particular to a natural frequency adaptive technology of a pump pool. Background technique [0002] Submersible pumps need to be submerged under a certain level of liquid when they work normally, so they need to be placed in a specific container. Such containers are usually called "pump pools", and the current pump pools are generally rectangular and cylindrical containers. . In the actual use process, there are problems: first, the submersible pump needs high-speed rotation during normal operation, which will inevitably cause the vibration of the pump pool. The pump pool is excited by vibration for a long time, fatigue cracks appear, and the service life is greatly shortened, threatening safe production; Second, according to actual use requirements, submersible pumps of different models or different speeds often need to be placed in the same pump pool, but the natural frequency o...

AI Technical Summary

Problems solved by technology

In the actual use process, there are problems: first, the submersible pump needs high-speed rotation during normal operation, which will inevitably cause the vibration of the pump pool. The pump pool is excited by vibration for a long time, fatigue cracks appear, and the service life is greatly shortened, threatening safe production; Second, according to actual use requirements, submersible pumps of different models or different speeds often need to be placed in the same pump pool, but the natural frequency of the same pump pool is fixed, and its natural frequency cannot avoid submersible pumps at various speeds. pump, then the pump pool can easily resonate with the submersible pump. Once resonance occurs, the life of the pump pool and submersible pump will be greatly reduced, and there will be serious safety hazards; third, the vibration of the pump pool will emit noise, resulting in sound polution

In view of the above problems, the current solution is, first, simply fix the pump pool on the ground with bolts to achieve the purpose of reducing the forced vibration, but the effect is not good, and the bolts will inevitably loosen after a period of time; second , for the resonance between the pump pool and the submersible pump, usually redesign the pump pool or replace the submersible pump with other speeds to avoid the natural frequency of the two, but it causes waste of resources and increases the cost

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