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Wrapping method of winding rotor coil

A winding rotor and coating technology, which is applied in the field of coating of wound rotor coils, can solve the problem that Class F insulation cannot meet the requirements of actual use.

Inactive Publication Date: 2017-11-07
ANHUI WEINENG MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the insulation structure of domestic wound rotor coils is mainly F-class, but for the special market demand of high temperature resistance index (above 180 ℃), F-class insulation can no longer meet the actual use requirements

Method used

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  • Wrapping method of winding rotor coil
  • Wrapping method of winding rotor coil
  • Wrapping method of winding rotor coil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0013] Embodiment 1: the step S includes the following steps: B, first coat the polyimide film tape 5 on the outer section 12 of the groove, and then coat the organic silicon powder mica tape 3 on the section 11 between the grooves; C, between the grooves After the segment 11 is coated with the silicone powder mica tape 3 , continue to coat the silicone powder mica tape 3 to the outer section 12 of the tank without interruption, covering the polyimide film tape 5 .

Embodiment approach 2

[0014] Embodiment 2: the step S includes the following steps: B1, first coat the silicone powder mica tape 3 on the inter-slot section 11, and place the two ends of the silicone powder mica tape 3 freely after coating; C1, Coat the polyimide film tape 5 on the outer section 12 of the tank, and then continue to coat the two ends of the silicone powder mica tape 3 in step B1 to cover the polyimide film tape 5 on the inter-slot section 11 .

Embodiment approach 3

[0015] Embodiment 3: the step S includes the following steps: B2, first coating the polyimide film tape 5 on the outer section 12 of the tank; C2, coating the silicone powder mica tape 3 from the outer end of the outer section 12 of the tank , the inter-slot section 11 and the slot-outside section 12 of the flat copper coil 10 are continuously and completely covered.

[0016] The following steps are also included: E, an epoxy phenolic glass cloth plate 1 is arranged at the bottom of the rotor slot 20 in advance, and a polyesterimide film polyaramid fiber paper composite material 2 is arranged on the inner wall of the rotor slot 20; F, the The inter-slot section 11 of the flat copper coil 10 is inserted into the rotor slot 20, the slot outer section 12 of the flat copper coil 10 protrudes from the rotor slot 20 and is turned outward, and the slot wedge 30 is inserted into the notch of the rotor slot 20; G, adjacent An epoxy phenolic glass cloth plate 1 is arranged between the t...

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Abstract

The invention discloses a wrapping method of a winding rotor coil. The method comprises the following steps that A, a flat copper coil is divided into a segment between grooves and an outer groove segment; S, a first layer of wrapping material of the outer groove segment is a polyimide film band, and a first layer of wrapping material of the segment between grooves and a second layer of wrapping material of the outer groove segment are an organic silicon powder mica tape; and D, operations of continuously wrapping a heat shrinkage polyester film band outwardly in the segment between grooves and continuously wrapping an alkali-free glass fiber tape outwardly in the outer groove segment are performed. A high temperature resistance material is adopted to wrap the flat copper coil so as to form an H grade insulation structure which can bear a high temperature that is above 180 DEG C; the adopted material possesses good performance and a uniform thickness so that an occupation volume of the flat copper coil is not increased; the structure and a rotor groove can form good interpenetration cooperation; and during usage, insulation and high temperature resistance performance is ensured, and reliable operation of a motor is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a wrapping method for a wound rotor coil. Background technique [0002] At present, high-voltage wound rotor motors are mainly used in cement industry, mine hoisting and other places that require large starting torque and frequent starting. In the prior art, high-voltage wound rotor motors all use double-layer hard-wound wound rotor coils. The rotor is provided with rotor slots and the slots are semi-closed. The wound rotor coils pass from one end of the rotor slot to the other end, and then The notch is inserted into the slot wedge to realize the embedding of the wound rotor coil. The number of coil windings of the wound rotor is small, and each slot and each layer generally use a coil copper flat wire. Since the windings in the same slot do not necessarily belong to the same phase, the two layers of windings must be insulated. However, at present, the insulation structure of d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K15/10
CPCH02K15/105
Inventor 曹婷婷吴琴琴朱毅金蓉秦炜周文彬
Owner ANHUI WEINENG MOTOR
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