CN113572328A - Shape memory insulating filler strip for reinforcing motor structure and preparation method and application thereof - Google Patents
Shape memory insulating filler strip for reinforcing motor structure and preparation method and application thereof Download PDFInfo
- Publication number
- CN113572328A CN113572328A CN202110952958.0A CN202110952958A CN113572328A CN 113572328 A CN113572328 A CN 113572328A CN 202110952958 A CN202110952958 A CN 202110952958A CN 113572328 A CN113572328 A CN 113572328A
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- shape memory
- filler strip
- memory insulating
- motor
- strip
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/10—Applying solid insulation to windings, stators or rotors
- H02K15/105—Applying solid insulation to windings, stators or rotors to the windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0018—Applying slot closure means in the core; Manufacture of slot closure means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
A shape memory insulating filler strip for reinforcing a motor structure and a preparation method and application thereof belong to the technical field of electrical equipment. The invention provides a shape memory insulating gasket strip for reinforcing a motor structure and a preparation method thereof, wherein the shape memory insulating gasket strip is obtained by heating an insulating gasket strip with an initial thickness of h1 to the glass transition temperature of the insulating gasket strip, compressing the insulating gasket strip until the thickness of the insulating gasket strip is h2, maintaining the pressure and reducing the temperature to room temperature, and fixing the shape. The application of the shape memory insulating filler strip in the structural reinforcement of the motor is also provided. The product of the invention, namely the compressed shape memory insulating filler strip is put on the position needing to be reinforced on the motor, the temperature of the motor rises in the operation process, and the shape memory insulating filler strip has the tendency of thickness rebound, so that the shape memory insulating filler strip can form the effect of close fit with other structures.
Description
Technical Field
The invention belongs to the technical field of electrical equipment, and particularly relates to a shape memory insulating filler strip for reinforcing a motor structure, and a preparation method and application thereof.
Background
In the electrical field, especially in the fields of generators, motors and the like, after long-time operation, a generating coil of the motor is damaged and loosened, and finally accidents are caused. The reason for this is that the insulating filler strip adopted between the power generating wire bars of the motor is in the long-term operation process of the motor, and the temperature of the power generating coil of the motor during operation is high, so that the insulating filler strip made of common materials is subjected to thermal aging and thermal shrinkage, so that the original fixed structure of the power generating coil generates gaps, and under the condition of high-speed operation vibration, the loosened motor coil is continuously abraded, and finally accidents are caused. Therefore, a method for overcoming the thermal shrinkage phenomenon of the common insulating gasket is needed.
Disclosure of Invention
In view of the above problems in the prior art, it is an object of the present invention to provide a shape memory insulating spacer for reinforcing a structure of a motor.
In order to achieve the purpose, the invention adopts the following technical scheme:
a shape memory insulating filler strip for reinforcing a motor structure is characterized in that the shape memory insulating filler strip is formed after insulating materials are heated, compressed, kept under pressure, cooled to room temperature and fixed in shape.
The shape memory insulating filler strip for reinforcing the motor structure is characterized in that the heating and compressing specifically comprises the following steps: after heating the insulating spacer with the initial thickness h1 to the glass transition temperature, the insulating spacer is compressed to the thickness h 2.
The shape memory insulating filler strip for reinforcing the structure of the motor is characterized in that h1> h 2.
The shape memory insulating filler strip for reinforcing the structure of the motor is characterized in that h2 is equal to the height of a gap generated among a motor slot wedge, a motor iron core and a motor conductive bar.
A preparation method of a shape memory insulating filler strip is characterized by comprising the following steps: heating the insulating gasket strip with the initial thickness h1 to the glass transition temperature, compressing the insulating gasket strip until the thickness h2, maintaining the pressure and reducing the temperature to the room temperature, and fixing the shape to obtain the shape memory insulating gasket strip.
The shape memory insulating filler strip for reinforcing the structure of the motor is characterized in that h1> h 2.
The shape memory insulating filler strip for reinforcing the structure of the motor is characterized in that h2 is equal to the height of a gap generated among a motor slot wedge, a motor iron core and a motor conductive bar.
The shape memory insulating filler strip is applied to the structural reinforcement of the motor.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, by utilizing the shape memory effect of the shape memory material, the compressed shape memory insulating filler strip is placed at the corresponding position of the motor, and in the running process of the motor, the temperature of the motor rises to the glass transition temperature, and the compressed shape memory insulating filler strip has the tendency of shape recovery, so that the compressed shape memory insulating filler strip can be tightly attached to a motor slot wedge, a motor iron core and a motor conductive wire rod, and the heat shrinkage phenomenon of a common insulating filler strip can not occur.
Drawings
FIG. 1 is a schematic view of an insulating furring strip before compression;
FIG. 2 is a schematic view of the compressed shape memory insulating spacer;
fig. 3 is a schematic diagram of a power generation structure of the fixed motor.
In the figure, 1-an insulating filler strip before compression, 2-a shape memory insulating filler strip after compression, 3-a motor conductive wire rod, 4-a motor slot wedge and 5-a motor iron core.
Detailed Description
The invention will be further illustrated by the following figures and examples.
Example 1:
as shown in fig. 1 and 2, the preparation method of the shape memory insulating filler strip of the present invention comprises: when the insulating filler strip 1 before compression with the initial thickness h1 is heated to be above the glass transition temperature thereof, the insulating filler strip is compressed to be the thickness h2, the pressure is maintained, the temperature is reduced to the room temperature, the shape is fixed, and the compressed shape memory insulating filler strip 2 is formed, wherein h1> h2, and h2 is equal to the height of a gap generated among the motor slot wedge 4, the motor iron core 5 and the motor conductive bar 3.
As shown in fig. 3, the compressed shape memory insulating filler strip 2 with the thickness of h2 is placed between the motor slot wedge 4, the motor iron core 5 and the motor conductive bar 3, and the components are tightly attached to each other to play a role in fixing.
The insulating filler strip made of common materials can generate a thermal shrinkage phenomenon at the operation temperature of the motor, so that the motor conductive bar 3 and the motor slot wedge 4 cannot be completely fixed, and the motor conductive bar 3 is damaged after long-term operation. The compressed shape memory insulating filler strip 2 is placed among the motor slot wedge 4, the motor iron core 5 and the motor conductive bar 3, and the compressed shape memory insulating filler strip 2 has the tendency of thickness springback under the action of the motor operation temperature, so that the compressed shape memory insulating filler strip is tightly attached to the motor iron core 5, the motor conductive bar 3 and the motor slot wedge 4 without thermal shrinkage.
Claims (8)
1. A shape memory insulating filler strip for reinforcing a motor structure is characterized in that the shape memory insulating filler strip is formed after insulating materials are heated, compressed, kept under pressure, cooled to room temperature and fixed in shape.
2. A shape memory insulating spacer for reinforcing structures of electrical machines according to claim 1, characterized in that said heat compression is in particular: after heating the insulating spacer with the initial thickness h1 to the glass transition temperature, the insulating spacer is compressed to the thickness h 2.
3. A shape memory insulating spacer for reinforcing structures of electrical machines according to claim 2, characterized in that said h1> h 2.
4. A shape memory insulating filler strip for reinforcing electrical machine structures as claimed in claim 2 or 3, characterized in that said h2 is equal to the height of the gap created between the machine slot wedge, the machine core and the machine conductor bar.
5. A preparation method of a shape memory insulating filler strip is characterized by comprising the following steps: heating the insulating gasket strip with the initial thickness h1 to the glass transition temperature, compressing the insulating gasket strip until the thickness h2, maintaining the pressure and reducing the temperature to the room temperature, and fixing the shape to obtain the shape memory insulating gasket strip.
6. A shape memory insulating spacer for reinforcing structures of electrical machines according to claim 5, characterized in that said h1> h 2.
7. A shape memory insulating filler strip for reinforcing electrical machine structures according to claim 5 or 6, characterized in that said h2 is equal to the height of the gap created between the machine slot wedge, the machine core and the machine conductor bar.
8. Use of a shape memory insulating spacer according to claim 1 for structural reinforcement of an electrical machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952958.0A CN113572328A (en) | 2021-08-19 | 2021-08-19 | Shape memory insulating filler strip for reinforcing motor structure and preparation method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952958.0A CN113572328A (en) | 2021-08-19 | 2021-08-19 | Shape memory insulating filler strip for reinforcing motor structure and preparation method and application thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113572328A true CN113572328A (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110952958.0A Pending CN113572328A (en) | 2021-08-19 | 2021-08-19 | Shape memory insulating filler strip for reinforcing motor structure and preparation method and application thereof |
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| CN (1) | CN113572328A (en) |
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2021
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| CN201699502U (en) * | 2010-07-01 | 2011-01-05 | 湘潭电机股份有限公司 | Motor rotor coil end end-to-end joint fixing device |
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Application publication date: 20211029 |
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