Preparation method of hybrid fiber composite generator protection ring

A composite material and motor guard ring technology is applied in the field of motor guard ring preparation, which can solve the problems of limiting the design of large-capacity generator guard rings, limiting the size of generators, and complex manufacturing processes, reducing centrifugal inertial force, and designing The effect of strong performance and simple manufacturing process

Inactive Publication Date: 2014-05-28
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problem that the existing preparation method of composite motor retaining rings uses metal materials, and the centrifugal inertia force is high during rotation, which limits the design of large-capacity generator retaining rings, and limits the size of the generator, resulting in high cost and difficult manufacturing. In order to solve the problem of complicated process, a method for preparing motor retaining ring of hybrid fiber composite material is provided

Method used

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  • Preparation method of hybrid fiber composite generator protection ring
  • Preparation method of hybrid fiber composite generator protection ring

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Experimental program
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specific Embodiment approach 1

[0019] Specific implementation mode 1: The method for preparing a hybrid fiber composite motor guard ring described in this embodiment is carried out according to the following steps:

[0020] 1. Pretreatment: the metal core mold used for winding molding is pretreated to obtain the pretreated metal core mold; the glass fiber is dried at a temperature of 80°C, and the drying time is 6h-12h. Obtain the dried glass fiber;

[0021] 2. Installation of the metal core mold and parameter setting of the filament winding machine: install the pretreated metal core mold on the main shaft of the filament winding machine, and then debug the filament winding machine program to set the winding speed and winding radius of the filament winding machine , Winding angle, number of winding layers, number of winding cycles, winding tension and trolley speed, get the fiber winding machine with the metal core mold installed and the parameters set;

[0022] The winding speed is 20m / min-40m / min; the winding r...

specific Embodiment approach 2

[0038] Specific embodiment two: this embodiment is different from specific embodiment one in that: the pretreatment described in step one is coating treatment or winding release cloth treatment; if the pretreatment described in step one is coating treatment, Then use a release agent to coat the surface of the metal core mold for winding molding for pretreatment to obtain the pretreated metal core mold; if the pretreatment described in step 1 is the winding release cloth treatment, then the winding molding A layer of release cloth is wound on the surface of the used metal core mold to obtain the pretreated metal core mold. Others are the same as the first embodiment.

[0039] The release agent described in this embodiment is applicable to any release agent with a release effect in the existing market; the release cloth described in this embodiment is applicable to any release cloth in the existing market.

specific Embodiment approach 3

[0040] Specific embodiment three: this embodiment is different from specific embodiment one or two in that: the glass fiber in step one is one of S-1 glass fiber, S-2 glass fiber and S-3 glass fiber or among them A mixture of several. Others are the same as the first or second embodiment.

[0041] When the glass fiber described in this embodiment is a mixture, the components in the mixture are mixed in any ratio.

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Abstract

The invention discloses a preparation method of a hybrid fiber composite generator protection ring, relates to a preparation method of a generator protection ring and aims at solving the problems that in the preparation method of the existing composite generator protection ring, metal materials are adopted in preparation, therefore, great centrifugal inertia is generated in rotating of the generator protection ring, design of a large-capacity generator protection ring is limited, size of the generator is limited, cost is high, and the preparation technology is complicated. The method comprises the following steps: step one, preprocessing; step two, mounting a metal core die and setting parameters of a fiber winding machine; step three, winding; step four, curing to obtain the hybrid fiber composite generator protection ring. The preparation method of the hybrid fiber composite generator protection ring is strong in designability, low in cost, simple in manufacture process, capable of increasing the size of the generator and applicable to preparation of the hybrid fiber composite generator protection ring.

Description

Technical field [0001] The invention relates to a preparation method of a motor guard ring. Background technique [0002] In recent years, the rapid growth of our 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 power industry has entered the development stage of large units and large power grids. Since the 1990s, the installed capacity of the power plant has gradually increased from 300MW to 600MW, and 1000MW domestic units have been put into use successively. The generator is one of the main equipment of power plants. To increase the capacity of the generator, the performance of the generator is required to be improved on the existing basis. [0003] The rotor guard ring is installed on both ends of the generator rotor to protect the end of the rotor coil and prevent large radial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/32B29C70/54
CPCB29C70/32
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
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