High-power submersible cross-flow pump

By incorporating a cooling chamber and a gas circulation system into the submersible cross-flow pump, the heat dissipation problem during high-power operation is solved, achieving efficient motor cooling and ensuring the stable operation of the submersible cross-flow pump.

CN115306732BActive Publication Date: 2026-04-10HEFEI HENGDAJIANGHAI PUMP IND CO LTD
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Patent Information

Application Number
CN202210984765.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-17
Publication Date
2026-04-10
Estimated Expiration
2042-08-17

AI Technical Summary

Technical Problem

When existing submersible axial flow pumps are running at high power, the motor cooling structure is insufficient, which leads to the motor not being able to dissipate heat effectively. Rotor expansion may cause stator-rotor friction, resulting in the submersible axial flow pump shutting down.

Method used

A support plate is set between the inner and outer cylinders to form a cooling chamber. A water pipe is connected to the inner cylinder cavity. Gas circulation cooling is achieved through a centrifugal fan and ventilation slot design. Combined with the bearing design and air guide plate structure, the heat dissipation efficiency is improved.

Benefits of technology

This significantly improves the heat dissipation efficiency of the submersible axial flow pump equipped with a high-power submersible motor, ensuring stable pump operation and preventing mechanical wear and shutdown.

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Abstract

The application discloses a high-power submersible tubular pump, which comprises the following components: an inner cylinder, a cylinder cavity of which is a sealed cavity; a rotating shaft, which is in rotary cooperation with the inner cylinder and is sealed with the inner cylinder at a contact surface; a rotor assembly, which is arranged in the cylinder cavity of the inner cylinder and is coaxially fixed with the rotating shaft; a stator assembly, which is arranged in the cylinder cavity of the inner cylinder and is in electromagnetic induction cooperation with the rotor assembly so as to drive the rotor assembly and the rotating shaft to rotate; an outer cylinder, two ends of which are communicated with a drainage pipeline, the inner cylinder is coaxially arranged in the outer cylinder, and the outer cylinder and the inner cylinder are fixedly supported through support plates; the support plates are arranged in at least two groups along the axis of the outer cylinder, the outer cylinder, the inner cylinder and the support plates form a sealed cooling cavity, the cooling cavity is communicated with the cylinder cavity of the inner cylinder; and a water pipe, which penetrates through the support plates so as to pass through the cooling cavity of the outer cylinder, and two ends of the water pipe are communicated with external fluid. The application improves the heat dissipation efficiency of the submersible tubular pump matched with the high-power submersible motor, and ensures the stable operation of the submersible tubular pump.
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