Single-gap direct-drive high-pressure magnetic force pump based on magnetic field modulation

By employing a single-air-gap direct-drive structure modulated by a magnetic field and a liquid metal heat-conducting agent in the magnetic pump, the problems of limited output performance and temperature rise of traditional magnetic pumps under high pressure and high power are solved, achieving efficient torque transmission and stable operation.

CN122216100APending Publication Date: 2026-06-16YANSHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
YANSHAN UNIV
Filing Date
2026-04-02
Publication Date
2026-06-16

AI Technical Summary

Technical Problem

Under high pressure and high power conditions, the increased thickness of the isolation sleeve in traditional magnetic pumps leads to limited output performance, increased eddy current losses, and higher temperatures, affecting the overall performance of the machine.

Method used

It adopts a single air gap direct drive structure based on magnetic field modulation. The isolation sleeve and the outer stator are assembled without gap. The inner magnet and the magnetic adjustment isolation sleeve form a single air gap. The magnetic guide block and the magnetic isolation block are alternately distributed. Liquid metal heat-conducting agent is injected into the U-shaped microchannel. The direct drive of the inner magnet is realized by magnetic field modulation, which increases the output torque and heats up quickly.

Benefits of technology

It achieves efficient torque transmission under high pressure and high power, avoids the volume occupation and heat accumulation of traditional structures, and improves the output performance and stability of magnetic pumps.

✦ Generated by Eureka AI based on patent content.

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    Figure CN122216100A_ABST
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Abstract

The application belongs to the technical field of magnetic force pumps, and particularly relates to a single-gap direct-drive high-pressure magnetic force pump based on magnetic field modulation, which comprises a pump body, a pump body support, a magnetic adjustment isolation sleeve, an outer stator, a rotor core, an inner magnetic steel, a main shaft and a winding. The outer stator is sleeved on the magnetic adjustment isolation sleeve and is connected in a contact mode, a single-gap structure is formed between the magnetic adjustment isolation sleeve and the inner magnetic steel, a magnetic conducting block and a magnetic isolation block are arranged in the magnetic adjustment isolation sleeve, the magnetic conducting block and the magnetic isolation block are alternately and spacedly distributed around the central axis of the isolation sleeve, the modulated outer armature magnetic field is coupled with the inner magnetic steel at the air gap and directly drives the inner magnetic steel, so that the output performance of the magnetic force pump is greatly improved. Meanwhile, a heat conducting agent is injected into a Chinese character-shaped micro flow channel formed between the outer ring of the magnetic conducting block and the slot of the isolation sleeve, and the heat conducting agent circulates in the Chinese character-shaped micro flow channel under the action of the magnetic field and the ampere force after the direct current power is connected, so that the heat is effectively dissipated and the temperature rise of the magnetic force pump is avoided.
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