A prefabricated part of a high-voltage grade insulating tie rod and its preparation process

An insulating tie rod and a preparation process technology are applied in the field of grade insulating tie rod prefabricated parts and their preparation technology to achieve the effects of improving impregnation problems, reducing appearance defects and solving impregnation problems

CN105261497BActive Publication Date: 2018-09-14GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2018-09-14

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Abstract

The invention provides a high voltage level insulation pull rod prefabticated part and a preparation process therefor. The insulation pull rod prefabticated part is formed by compositing epoxy resin, a curing agent, an accelerant and fiber fabrics; the fiber fabrics are aramid fiber fabrics, glass fiber fabrics, polyimide fiber fabrics or aramid fiber / polyester fiber hybrid fabrics. The preparation method comprises the following steps of 1), fiber fabrics winding; 2) high-vacuum system pretreatment; 2) resin vacuum infusion; 4) gelling; 5) primary curing; 6) secondary curing; and 7) de-molding. Through the material selection and winding mode design of the substrate fiber fabrics, the accurate measurement of the static mixing system and the application of the vacuum infusion process in the preparation method, the dipping problem between the fiber fabrics and the epoxy resin system is effectively solved, and the percent of pass of the insulation pull rod prefabticated part is greatly improved; and in addition, the insulation pull rod prefabticated part is excellent in electric insulating property and mechanical property, and can be applied to the high voltage level GIS isolating switch.
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Description

technical field

[0001] The invention relates to an insulating pull rod prefabricated part, in particular to a high-voltage grade insulating pull rod prefabricated part and a preparation process thereof. Background technique

[0002] The insulating pull rod in the isolating switch is an important insulating component and transmission part of GIS equipment, and it is also required to have high reliability in terms of its mechanical and electrical insulation properties. In recent years, high-voltage grade GIS insulating rod flashovers have occurred from time to time during handover and operation, which has brought great challenges to the safe operation of power transmission.

[0003] The insulating pull rod is an insulating part used as a high and low voltage insulating joystick in a high voltage switch with a voltage level of 110kV and above. 6 As an insulating medium, gas is characterized by its thin and long structure and frequent breaking operations. Therefore, it is not o...

Examples

Embodiment 1

[0033] The formula of the composite material system for the prefabricated part of the high-voltage insulating tie rod is as follows:

[0034]

[0035] The preparation process of the high-voltage grade insulating tie rod prefabricated part:

[0036] 1) Winding of fiber fabric: Winding aramid fiber fabric and polyester fiber fabric on a mandrel coated with a release agent, the winding process is similar to a tubular sandwich structure (polyester fiber fabric + aramid fiber fabric + polyester fabric fiber fabric) during the winding process, the winding speed is controlled to be 50rpm / min, and the tension of the fiber fabric during the winding process is 10N. After the fiber fabric is wound, it is put into the mold cavity coated with the release agent together with the mandrel, and then the mold is fixed both ends.

[0037] 2) High vacuum system pretreatment: connect the static mixing equipment, air compressor, vacuum pump, mold, and resin collector with hard nylon plastic tub...

Embodiment 2

[0044] The formula of the composite material system for the prefabricated part of the high-voltage insulating tie rod is as follows:

[0045]

[0046] The preparation process of the high-voltage grade insulating tie rod prefabricated part:

[0047] 1) Winding of fiber fabric: Winding aramid fiber fabric and polyester fiber fabric on a mandrel coated with a release agent, the winding process is similar to a tubular sandwich structure (polyester fiber fabric + aramid fiber fabric + polyester fabric fiber fabric) during the winding process, the winding speed is controlled to be 80rpm / min, and the tension of the fiber fabric during the winding process is 15N. After the fiber fabric is wound, it is put into the mold cavity coated with the release agent together with the mandrel, and then the mold is fixed both ends.

[0048] 2) High vacuum system pretreatment: connect the static mixing equipment, air compressor, vacuum pump, mold, and resin collector with hard nylon plastic tub...

Embodiment 3

[0055] The formula of the composite material system for the prefabricated part of the high-voltage insulating tie rod is as follows:

[0056]

[0057] The preparation process of the high-voltage grade insulating tie rod prefabricated part:

[0058] 1) Winding of fiber fabric: Winding aramid fiber fabric and polyester fiber fabric on a mandrel coated with a release agent, the winding process is similar to a tubular sandwich structure (polyester fiber fabric + aramid fiber fabric + polyester fabric fiber fabric) during the winding process, the winding speed is controlled to be 100rpm / min, the tension of the fiber fabric during the winding process is 20N, after the fiber fabric is wound, it is put into the mold cavity coated with the release agent together with the mandrel, and then the mold is fixed both ends of

[0059] 2) High vacuum system pretreatment: connect the static mixing equipment, air compressor, vacuum pump, mold, and resin collector with hard nylon plastic tube...