Polyimide glue poured motor winding insulation structure and preparation method thereof

A technology of polyimide glue and motor windings, which is applied in electric components, laying solid insulation, manufacturing motor generators, etc., can solve the problems of high temperature resistance of motor windings, reduce thermal expansion coefficient, alleviate local accumulation, and prolong service life The effect of longevity

Pending Publication Date: 2022-01-11
沈阳方舟石油科技发展有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that motor windings are not resistant to high temperature in the prior art, provide a polyimide glue perfusion motor winding insulation structure and preparation method, improve the heat resistance level of motor windings and the reliability of insulation under high temperature conditions and durability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Wrap PI / F46 resin composite film on the surface of a copper wire with a diameter of 2mm in a semi-folded way, sinter at 320°C for 5 minutes, and bond the high-temperature-resistant polyimide film into a whole to form a thickness of 0.2mm The first wrapping insulation layer;

[0024] (2) Carry out oxidation etching treatment on the surface of the first wrapping insulation layer for 1 second by using low-temperature air plasma with a discharge power of 600W;

[0025] (3) After the copper core PI / F46 wrapping wire is made into the winding of the stator of the submersible motor, it is filled with 5% nano-scale alumina-filled acetylene-terminated polyimide resin glue, and heated at 200°C for 4h, 260°C Heating at low temperature for 5 hours, heating at 350°C for 5 hours, and finally curing to form a resin perfusion insulating layer to obtain a motor winding insulation structure perfused with polyimide glue.

Embodiment 2

[0027] (1) Wrap PI / polyetherketone composite film on the surface of a copper wire with a diameter of 2 mm in a half-folded way, sinter at 370 ° C for 5 minutes, and bond the high-temperature-resistant polyimide film into a whole to form a thickness of 0.7 mm of the first wrapping insulation layer;

[0028] (2) Carry out oxidation etching treatment on the surface of the first wrapping insulation layer for 10 seconds by using low-temperature air plasma with a discharge power of 100W;

[0029] (3) After the copper core PI / polyether ketone wrapping wire is made into the winding of the stator of the submersible motor, the polyimide resin glue of the phthalonitrile-based end-capping of filling of 20% micron grade magnesium oxide is perfused, at 250 Heating at ℃ for 1 hour, heating at 290 ℃ for 2 hours, heating at 360 ℃ for 5 hours, and finally curing to form a resin perfusion insulation layer, and obtaining a polyimide glue perfusion motor winding insulation structure.

Embodiment 3

[0031] (1) Wrap the PI / polyether nitrile composite film on the surface of a copper wire with a diameter of 2 mm in a semi-folded way, sinter at 350 ° C for 5 minutes, and bond the high-temperature-resistant polyimide film into a whole to form a thickness of 0.5 mm of the first wrapping insulation layer;

[0032] (2) Carry out oxidation etching treatment on the surface of the first wrapping insulation layer for 5 seconds by using low-temperature air plasma with a discharge power of 200W;

[0033] (3) After the copper core PI / polyether nitrile wrapping wire is made into the winding of the stator of the submersible motor, the polyimide resin glue of the phenylacetylene base capping of 2% nano-scale zinc oxide and 5% boron nitride filling is poured, Heat at 250°C for 2 hours, 320°C for 5 hours, and 370°C for 2 hours, and finally solidify to form a resin-infused insulating layer to obtain a polyimide glue-infused motor winding insulation structure.

[0034] The principle of the pr...

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Abstract

The invention discloses a polyimide glue poured motor winding insulation structure and a preparation method thereof. The method comprises the steps of wrapping the surface of a metal wire with a high temperature resistant polyimide/adhesive resin composite film, sintering at 320-370 DEG C to melt the adhesive resin, and bonding the high temperature resistant polyimide film into a whole to form a first wrapping insulation layer; performing oxidation etching treatment on the surface of the first wrapping insulating layer; after the metal wire is made into a motor stator electromagnetic wire winding, pouring the high-temperature-resistant thermosetting polyimide resin adhesive, and heating and curing to form a resin pouring insulating layer. Compared with the prior art, the manufacturing method of the polyimide glue poured motor winding insulation structure has important influences on the improvement of the heat resistance grade, the operation reliability/durability and the service life of a special motor, and has bright application prospects in the field of heavy oil reservoir exploitation.

Description

technical field [0001] The invention relates to the technical field of electromechanical equipment, in particular to an insulating structure and a preparation method of a motor winding infused with polyimide glue. Background technique [0002] The insulation structure of the magnet wire winding is the core technology of the motor. As the output power of the motor increases or it is used in a high temperature environment, the insulation structure of the magnet wire winding is required to have extremely high heat resistance and thermochemical stability. [0003] Steam huff and puff technology is the most important thermal recovery technology for heavy oil and ultra-heavy oil reservoirs; its recovery mechanism is to inject high-temperature and high-pressure steam to heat the oil layer around the oil well to reduce viscosity, soak the well for heat exchange, and finally use lifting equipment to pump out oil. It can be seen that the submersible electric pump directly withstands t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/10C08K3/22C08K3/38
CPCH02K15/105C08K3/22C08K3/38C08L2201/08C08L2203/202C08K2201/011C08K2003/2227C08K2003/222C08K2003/2296C08K2003/385C08L79/08
Inventor 曲丽峰熊需海王静曲方舟
Owner 沈阳方舟石油科技发展有限公司
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