Deep water pump with pressure compensating function

Abstract

The invention discloses a deep water pump with pressure compensating function. The deep water pump with the pressure compensating function comprises a pump body, a hydraulic motor, a pump shaft, and an impeller which is mounted on the pump shaft, wherein the hydraulic motor is mounted on the pump body; the pump shaft is mounted in the pump body and is driven through the hydraulic motor; an oil chamber provided with a pressure compensator is arranged on the pump body; the pump shaft penetrates the oil chamber and is in sealing pivoting with the oil chamber; and the pump shaft is supported to rotate through a lubricating bearing in the oil chamber. According to the deep water pump with the pressure compensating function, the problems of lubricating and sealing of the bearing in high-speed rotating of the water pump can be solved through an oil pressure compensating device, and meanwhile, the inner pressure and the outer pressure of the lubricating oil chamber of the bearing can be balanced through the oil pressure compensating device, so that the damage of deep water high pressure to the lubricating oil chamber can be avoided.

Description

technical field [0001] The invention belongs to the technical field of deep water pumping equipment, in particular to a deep water pump with pressure compensation function. Background technique [0002] As a fluid conveying device, water pumps are widely used. At present, electric motors are generally used as the driving power in shallow water, and the impeller shaft is fixed on the pump body through rolling bearings, and the operating water depth can reach several hundred meters. However, in deep-sea operation engineering equipment, the water depth reaches several thousand meters, and the existing ordinary water pump is difficult to adapt to the deep-sea environment with a depth of several thousand meters. For bearings, its lubrication and sealing are more difficult. At the same time, the hydraulic motor drives the water pump, and its structural sealing, lubrication and other problems (especially the oil leakage problem at the output shaft position) all need to be solved,...

AI Technical Summary

Problems solved by technology

However, in deep-sea operation engineering equipment, the water depth reaches several thousand meters, and the existing ordinary water pump is difficult to adapt to the deep-sea environment with a depth of several thousand meters. Bearings are difficult to lubricate and seal

At the same time, the hydraulic motor drives the water pump, and its structural sealing, lubrication and other problems (especially the oil leakage problem at the position of the output shaft) need to be solved, and no good solution has been seen yet.

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