Blade-adjustable submersible electric pump

Abstract

The invention discloses a blade-adjustable submersible electric pump which comprises a pump shell fixed in a drainage pipeline. A water inlet horn, an impeller chamber, a water outlet guide blade body and a motor chamber are sequentially arranged in the pump shell in the flow direction of fluid. The water inlet horn is connected with a water inlet pipeline, the motor chamber is connected with a water outlet pipeline, and a motor in the motor chamber drives an impeller hub in the impeller chamber to rotate through a motor shaft. Blades which can rotate relative to the impeller hub to change the deflection angle are arranged on the impeller hub, and an adjusting cavity used for holding an adjusting connecting rod, a driving cavity and a power cavity used for providing power for a hydraulic motor are sequentially arranged in the impeller hub in the axial direction. According to the blade-adjustable submersible electric pump, the purpose that the deflection angles of the blades are adjusted without shutdown in the working process is achieved; and due to the fact that a stator is fixed to the pump shell, circuits for supplying power to the stator are located outside the impeller hub and are independent of the impeller hub, no circuit rotates along with the impeller hub in the rotating process of the impeller hub, the stability and the safety are high in the working process, and the problem that the circuits are entangled and interfere does not need to be worried about.

Description

technical field [0001] The invention relates to the field of water conservancy transportation, in particular to a submersible electric pump with adjustable blades. Background technique [0002] Submersible electric pump refers to a kind of water pump in which both the impeller of the pump body and the motor driving the impeller are submerged in water, and it is widely used in the field of water conservancy transportation. [0003] In many drainage sites, due to large changes in water level, it is necessary to adjust the deflection angle of the blades to meet the flow and head requirements of different working conditions, so that the efficiency of the pump is at a better working condition point. The current submersible pumps cannot adjust the deflection angle of the blade without stopping the machine, and often need to stop the machine to adjust the deflection angle of the blade, which greatly affects the drainage efficiency; if the circuit is used to control the deflection o...

AI Technical Summary

Problems solved by technology

The current submersible pumps cannot adjust the deflection angle of the blade without stopping the machine, and often need to stop the machine to adjust the deflection angle of the blade, which greatly affects the drainage efficiency; if the circuit is used to control the deflection of the blade, during the rotation of the impeller hub, too many lines It may be entangled and interfered, which is very dangerous, so it needs to be solved urgently

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