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Plastic capsulation submerged motor and its capsulation material and technology

A technology for submersible motors and plastic packaging materials, applied in plastic/resin/wax insulators, circuits, electromechanical devices, etc., can solve the problems of low motor winding slot fullness, poor winding insulation reliability, and large mechanical loss, etc., to achieve low manufacturing costs , Excellent weather resistance and aging resistance, good sealing effect

Inactive Publication Date: 2003-10-22
HEFEI UNIV OF TECH
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The problem is that because this kind of motor requires a reliable mechanical seal, the structure is complex, the volume is large, the mechanical loss is large, the efficiency is low, and the reliability of the winding insulation is poor.
Liquid-filled submersible motors are usually insulated with polyethylene nylon sheathed windings. At the same time, the problem is that the motor winding slot fill rate is low, the motor is large in size, high in current density, low in efficiency, and high in manufacturing costs.

Method used

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  • Plastic capsulation submerged motor and its capsulation material and technology
  • Plastic capsulation submerged motor and its capsulation material and technology
  • Plastic capsulation submerged motor and its capsulation material and technology

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Embodiment

[0031] see figure 2 , This embodiment consists of a stator casing 3, a stator core 4, a three-phase winding 2, and a winding lead-out cable and a joint 1 to form a stator structure with windings. like figure 2 As shown, the stator with windings adopts a plastic sealing structure that is integrally potted with epoxy potting material. The sealed stator is composed of the potting layer 5 located on the inner circle of the stator, the potting section 6 at both ends of the winding and the stator casing 3. The stator The winding lead-out cables and connectors protrude out of the plastic-encapsulated structure.

[0032] see image 3 , the present embodiment is composed of the rotating shaft 7, the yoke 11, the magnetic steel 10 and the stainless steel sleeve 9 to form the rotor structure. like image 3 As shown, the rotor is sealed with epoxy sealing glue, and the sealed rotor is formed by the plastic-sealed end faces 8 at both ends of the magnetic steel section and the stainless...

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Abstract

A plastics sealed submerged motor features that the high-temp solidifying and thermally conducting epoxy material is used for integral vacuum sealing of stator. The sealing layer on internal circle of stator, the encapsuled segments at both ends of winding and the stator casing constitute a sealed stator. The plastics sealed end faces at both ends of magnetic steel segment and stainless steel sleeve constitute a sealed rotor. Its advantages inclue simple structure, small size, low cost, high insulating performance and high efficiency.

Description

Technical field: [0001] The invention relates to a submersible motor, in particular to a permanent magnet DC brushless submersible motor and a permanent magnet synchronous submersible motor. Background technique: [0002] Traditional submersible motors have two types of insulation methods: dry type and liquid-filled type. Dry submersible motors typically employ mechanical seals to isolate the inside and outside of the motor. The internal winding of the motor is not corroded by external liquid to protect the insulation performance of the motor winding. The existing problem is that because this kind of motor requires a reliable mechanical seal, the structure is complex, the volume is large, the mechanical loss is large, the efficiency is low, and the reliability of the winding insulation is poor. Liquid-filled submersible motors are usually insulated with polyethylene nylon sheathed windings. At the same time, the problem is that the slot filling rate of the motor winding is...

Claims

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Application Information

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IPC IPC(8): H01B3/00H01B3/32H01B3/40H02K1/27H02K3/44
Inventor 余世杰何慧若苏建徽沈玉樑茆美琴赵为郝玉龙
Owner HEFEI UNIV OF TECH
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