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Fiberglass Composite Motor Guard Ring

A glass fiber and motor retaining ring technology is applied in the field of materials for manufacturing motor retaining rings, which can solve the problems of high cost, complex manufacturing process, poor mechanical properties of large-size motor retaining rings, etc. Design effects

Inactive Publication Date: 2016-06-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a glass fiber composite material motor retaining ring in order to solve the technical problems of poor mechanical properties, high cost and complicated manufacturing process of the large-size motor retaining ring made of existing materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0028] Embodiment 1: In this embodiment, the motor retaining ring made of glass fiber composite material is made of 55%-65% glass fiber and 35%-45% resin glue according to the mass fraction.

[0029] The design strength of the glass fiber composite material motor retaining ring in this embodiment can reach more than 1200MPa, but the density is only 1 / 4 of that of steel, thereby reducing the centrifugal inertial force, so the design and processing are not limited by size, and the designability is strong, and Increase the size of the generator (the diameter of the retaining ring is greater than 1095mm) and increase the speed, that is, the 600MW high-power generator can still work normally at 3600r / min, which provides a strong condition for the manufacture of large-capacity generators;

specific Embodiment approach 2

[0030] Embodiment 2: This embodiment differs from Embodiment 1 in that the glass fiber is one of S-1 glass fiber, S-2 glass fiber and S-3 glass fiber or a mixture of several of them. Others are the same as in the first embodiment.

[0031] When the glass fiber described in this embodiment is a mixture, the ratio between each component is arbitrary.

specific Embodiment approach 3

[0032] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the resin glue is a mixture of resin, anhydride curing agent and imidazole accelerator;

[0033] Described resin is epoxy resin or epoxy vinyl resin;

[0034] The mass ratio of described acid anhydride curing agent to resin is (0.6~1):1;

[0035] The mass ratio of the imidazole accelerator to the resin is (0.00005-0.0002):1. Others are different from the first or second specific embodiment.

[0036] The grade of the anhydride curing agent used in this embodiment is HK-021.

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PUM

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Abstract

The invention relates to a motor guard ring of glass fiber composite material, which relates to a material used for manufacturing motor guard rings. The invention aims to solve the technical problems of poor mechanical performance, high cost and complicated manufacturing process of the large-size motor retaining ring made of existing materials. The glass fiber composite material motor retaining ring is made of 55% to 65% glass fiber and 35% to 45% resin glue according to the mass fraction. The design strength of the glass fiber composite material motor retaining ring of the present invention can reach more than 1200 MPa, but the density is only 1 / 4 of that of steel, the cost is low, the cost is reduced by about 55% to 60%, and the manufacturing process is simple. The density of the glass fiber composite material motor retaining ring of the present invention is 1600kg / m 3 ~2000kg / m 3 , Tensile strength 1200MPa ~ 1400MPa. The invention belongs to the field of preparation of motor guard rings.

Description

technical field [0001] The invention relates to a material for the manufacture of electric motor retaining rings. Background technique [0002] In recent years, the rapid growth of my country's national economy has increased the demand for electricity, which requires us to expand the scale of the power grid. Because high-power generators have the advantages of high power generation efficiency and low unit cost, since the 1980s, my country's electric power industry has entered the development stage of large units and large power grids. Since the 1990s, the installed capacity of power plants has gradually increased from 300MW to 600MW, and 1000MW domestic units have been put into use one after another. The generator is one of the main equipments of the power plant. To increase the capacity of the generator, the performance of the generator is required to be improved on the existing basis. [0003] The rotor retaining ring is installed at both ends of the generator rotor to p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L63/00C08K7/14C08G59/42
Inventor 王荣国刘文博杨帆王冬峣徐忠海矫维成张慧
Owner HARBIN INST OF TECH