Integrated submersible electric pump blade adjusting device

Abstract

The invention discloses an integrated submersible electric pump blade adjusting device. An impeller hub located in a pump shell is provided with blades capable of rotating relative to the impeller hub to change the deflection angle, and an adjusting cavity used for accommodating an adjusting connecting rod, a driving cavity and a power cavity used for providing power for a hydraulic motor are sequentially formed in the impeller hub in the axial direction; and a stator extending into the power cavity and matched with the impeller hub in a sealing mode is fixed to the pump shell, a circuit outside the pump shell supplies power to the stator, a rotor matched with the stator in an electromagnetic induction mode is arranged in the power cavity, the rotor is coaxially fixed to a rotating shaft of the hydraulic motor and rotatably matched with the impeller hub, and the rotor provides power for the hydraulic motor while rotating under electromagnetic induction. According to the invention, the deflection angle of the blade is adjusted without shutdown in the working process; and in the rotating process of the impeller hub, no line rotates along with the impeller hub, stability and safety are high in the working process, and the problem of line entanglement interference is solved.

Description

technical field [0001] The invention relates to the field of water conservancy transportation, in particular to an integrated submersible electric pump blade adjustment device. 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...

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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