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Large-diameter pillar insulator core and manufacturing method thereof

The technology of a pillar insulator and a manufacturing method, which is applied to the large-diameter pillar insulator core and its manufacturing field, can solve the problems of complex manufacturing process, high rejection rate, difficult transportation, etc. Effect

Active Publication Date: 2010-11-17
西安高强绝缘电气有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the core body of post insulators produced and used is mainly ceramics, which have certain shortcomings and limitations in the use process, that is, heavy weight, easy to break, and high scrap rate, so it brings many difficulties to transportation and high cost. , the production process is complicated, which brings inconvenience to production

Method used

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  • Large-diameter pillar insulator core and manufacturing method thereof
  • Large-diameter pillar insulator core and manufacturing method thereof
  • Large-diameter pillar insulator core and manufacturing method thereof

Examples

Experimental program
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Embodiment 1

[0024] Such as figure 1 The shown core body of a large-diameter post insulator is composed of an insulating tube 1 and a filling body 2 filled inside the insulating tube 1 and used to assist in reducing leakage current. The diameter of the core of the large-diameter post insulator is 120mm.

[0025] Such as figure 2 A method for manufacturing the large-diameter post insulator core includes the following steps:

[0026] Step 1, making the insulating tube 1, the manufacturing process includes the following steps:

[0027] Use a winding machine to wind the glass fiber yarn impregnated with the pre-prepared epoxy resin composite glue solution to the mold with the required insulator core length at an angle of 0°~7°, and then put the wound mold into the oven And sequentially bake at 65℃~75℃ once for 2.5h~3.5h, at 125℃~135℃ for 2.5h~3.5h, and at 160℃~170℃ for three times for 2.0h~3.0 h, then naturally cool the coiled tube after three times of baking to room temperature, then tak...

Embodiment 2

[0036] In this embodiment, when making the insulating tube 1, the winding angle of the winding machine is 7°, and the wound molds are baked at 75°C for 3.5 hours for the first time, and at 135°C for 3.5 hours for the second time. h, three times of baking at 170°C for 3.0 hours; the pre-prepared epoxy resin composite glue is prepared by mixing epoxy resin, curing agent and accelerator in a weight ratio of 100:90:2. After the insulating tube 1 is processed, the inner wall of the insulating tube 1 is conventionally polished and cleaned with a cleaning solution, and then evenly coated with a layer of coupling agent. The thickness of the coupling agent is 1.0 mm.

[0037] When processing the filling body 2, the pre-prepared filling material is prepared by mixing chopped yarn, silicon crystal sand and epoxy glue in a ratio of 30:60:20 by weight. The pressure is 15MPa. During the baking process, the casted insulating tube 1 was baked for 3.5 hours at 75°C for the first time, 3.5 hou...

Embodiment 3

[0041] In this embodiment, when making the insulating tube 1, the winding angle of the winding machine is 3.5°, and the wound mold is baked at 70° C. for 3 hours, and then baked at 130° C. for 3 hours. Bake three times at 165°C for 2.5 hours; the pre-prepared epoxy resin composite glue is prepared by mixing epoxy resin, curing agent and accelerator in a weight ratio of 100:80:1.5. After the processing of the insulating tube 1 is completed, the inner wall of the insulating tube 1 is conventionally polished and cleaned with a cleaning solution, and then evenly coated with a layer of coupling agent, the thickness of which is 0.8 mm.

[0042]When processing the filling body 2, the pre-prepared filling material is prepared by mixing chopped yarn, silicon crystal sand and epoxy glue in a ratio of 28:55:18 by weight. The pressure is 12MPa. During the baking process, the casted insulating tube 1 was baked at 70° C. for 3 hours for a first time, 130° C. for 3 hours, and 165° C. for 2....

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Abstract

The invention discloses a large-diameter pillar insulator core and a manufacturing method thereof. The large-diameter pillar insulator core comprises an insulation tube and a filling body, wherein the filling body is filled into the insulation tube and used for reducing a leakage current value in assistance. The manufacturing method of the large-diameter pillar insulator core comprises the following steps of: (1) manufacturing the insulation tube: firstly machining and manufacturing for forming on a mould of needed insulator core length at an angle of 0-7 degrees, then baking the insulation tube, and pulling the mould from the insulation tube after the baking so as to manufacture the insulation tube; (2) machining the filling body in the insulation tube, wherein the machining process of the filing body comprises the following steps of: conventionally polishing the inner wall of the insulation tube, washing by using washing liquid, and then uniformly coating a coupling agent layer; placing the insulation tube coated with the coupling agent into a press machine; casting for forming by injecting previously-prepared filling materials into the insulation tube; and finally baking to manufacture a finished product. The invention has simple manufacture process and easy and convenient operation and is especially suitable for the production of the large-diameter pillar insulator core; and in addition, the large-diameter pillar insulator core has good performance, low manufacturing cost and long service life.

Description

technical field [0001] The invention relates to a production method of a composite insulator core body for high-voltage electrical appliances used in the electrified railway industry and the electric power industry, in particular to a large-diameter post insulator core body and a manufacturing method thereof. Background technique [0002] At present, the core body of post insulators produced and used is mainly ceramics, which have certain shortcomings and limitations in the use process, that is, heavy weight, easy to break, and high scrap rate, so it brings many difficulties to transportation and high cost. , The manufacturing process is complicated, which brings inconvenience to production. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a large-diameter pillar insulator core for assisting in reducing the leakage current value in view of the above-mentioned deficiencies in the prior art. [0004] In order to so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/14H01B17/38H01B19/00
Inventor 张宝英
Owner 西安高强绝缘电气有限责任公司
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