Novel submersible electric pump

Abstract

The invention discloses a novel submersible electric pump. The novel submersible electric pump comprises a hoisting device. The hoisting device is provided with a cross arm. A regulating rod is installed in the middle part of the cross arm. A snap ring is installed at the lower part of the regulating rod. A round steel piece is installed at the lower part of the snap ring. A suspending rod is installed at the lower part of the round steel piece. An inverted-U-shaped ring is installed at the lower part of the suspending rod. A shell is installed at the lower part of the inverted-U-shaped hoisting ring and is provided with a cable. A cable outlet box is installed on the cable. A water filling type motor is adopted instead of a dry motor, and a motor cavity is filled with clean tap water. According to the novel submersible electric pump, because the shell can be filled with water, whether the motor cavity leaks or not can be judged after the cavity is filled with water, there is no need to do air-tight tests on the motor cavity in the site, the submersible electric pump can be maintained in the site instead of being returned to factories, and therefore the work efficiency is improved, the maintenance time is shortened, and the maintenance cost is lowered. The novel submersible electric pump has the advantages of being simple and compact in structure, low in manufacture cost and easy and convenient to use.

Description

technical field [0001] The invention relates to a water pumping device, more precisely a novel submersible electric pump. Background technique [0002] At present, the submersible shaft (mixed) current pump generally has a coaxial direct connection between the motor and the water pump and is installed in a steel shaft to run; the motor adopts a dry motor, that is, the motor cavity is dry and sealed, and the motor is cooled by internal air cooling and external cooling. The cooling method is combined with water cooling, the motor stator coil is made of enameled wire; the upper and lower bearings are oil cooled; the shaft and the outlet pipe are connected by bolts. After decades of operation, it is found that the submersible axial (mixed) electric pump with this structure has some disadvantages, such as the safety and reliability of the pump operation is not high, and the pump is prone to reverse in the wellbore, lift the machine, and cause cable disturbance. The motor is brok...

AI Technical Summary

Problems solved by technology

After decades of operation, it is found that the submersible axial (mixed) current pump with this structure has some disadvantages, such as the safety and reliability of the pump operation is not high, and the pump is prone to reverse in the wellbore, lift the machine, and cause cable disturbance. The motor is broken, the stator coil is easy to burn out after the motor enters the water, and the maintenance is more troublesome. It must be returned to the factory for repair, and the maintenance cost is high. The wellbore is relatively long, and the loss along the way is relatively large; the installation is troublesome and the cycle is long; the overall cost of the pumping station is high, etc.

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