Manufacturing method of large-diameter multi-core combined core rod

A production method and a large-diameter technology, which is applied in the direction of electrical components, insulators, circuits, etc., can solve the problems of increased diameter and size of composite insulator mandrels, difficulty in making large-diameter mandrels, etc., and achieve technical stability, feasibility and repeatability Strong, simple production process effect

Inactive Publication Date: 2015-09-30
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] With the development of ultra-high voltage levels above 800kV and 1100kV for power transmission and transformation, in order to ensure the reliability of power transmission and transformation, the design of post insulators has gradually developed from a few meters high in the past to a height of more than ten meters or even higher. From a structural point of view The requirements for the diameter of composite insulator core rods are also increasing, and there are many technical defects in the process of manufacturing composite insulator core rods using traditional pultrusion production processes, making it difficult to produce composite insulators with a diameter of more than 170mm by traditional processes with large diameter mandrel

Method used

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  • Manufacturing method of large-diameter multi-core combined core rod
  • Manufacturing method of large-diameter multi-core combined core rod
  • Manufacturing method of large-diameter multi-core combined core rod

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Embodiment 1

[0037] The large-diameter multi-core combined mandrel to be produced in this embodiment is a cylindrical structure with a cross-sectional diameter of 180 mm; the manufacturing method of the large-diameter multi-core combined mandrel in this embodiment comprises the following steps:

[0038] Step 1. According to the design requirements of the large-diameter multi-core combined mandrel to be made, select the single-core mandrel 1 made of glass fiber reinforced epoxy resin. The single-core mandrel 1 selected in this embodiment is respectively: specifications 4 single-core mandrels with a diameter of Ф74.5mm, 5 single-core mandrels with a specification of Ф30.5mm, and 8 single-core mandrels with a specification of Ф15mm; then the selected single-core mandrel 1 is pretreated, The specific process is:

[0039] Step 101, sandblasting the selected single-core mandrel 1;

[0040] Step 102. Wipe the single-core mandrel 1 after sandblasting in step 101 with a rag dipped in alcohol, and ...

Embodiment 2

[0050] The large-diameter multi-core combined mandrel to be produced in this embodiment is a cylindrical structure with a cross-sectional diameter of 170mm; the manufacturing method of the large-diameter multi-core combined mandrel in this embodiment includes the following steps:

[0051] Step 1. According to the design requirements of the large-diameter multi-core combined mandrel to be made, select the single-core mandrel 1 made of glass fiber reinforced epoxy resin. The single-core mandrel 1 selected in this embodiment is respectively: specifications 4 single-core mandrels with a diameter of Ф70mm, 5 single-core mandrels with a specification of Ф28.5mm, and 8 single-core mandrels with a specification of Ф14mm; for:

[0052] Step 101, sandblasting the selected single-core mandrel 1;

[0053] Step 102. Wipe the single-core mandrel 1 after sandblasting in step 101 with a rag dipped in alcohol, and then dry it in a drying oven at 80°C for 1 hour;

[0054] Step 103, evenly sme...

Embodiment 3

[0063] The large-diameter multi-core combined mandrel to be produced in this embodiment is a cylindrical structure with a cross-sectional diameter of 210mm; the manufacturing method of the large-diameter multi-core combined mandrel in this embodiment includes the following steps:

[0064] Step 1. According to the design requirements of the large-diameter multi-core combined mandrel to be made, select the single-core mandrel 1 made of glass fiber reinforced epoxy resin. The single-core mandrel 1 selected in this embodiment is respectively: specifications 4 single-core mandrels with a diameter of Ф86mm, 5 single-core mandrels with a specification of Ф35mm, and 8 single-core mandrels with a specification of Ф17.5mm; for:

[0065] Step 101, sandblasting the selected single-core mandrel 1;

[0066] Step 102. Wipe the single-core mandrel 1 after the sandblasting treatment in step 101 with a rag dipped in alcohol, and then place it in a drying oven at a temperature of 60° C. for 1 h...

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Abstract

The invention provides a manufacturing method of a large-diameter multi-core combined core rod. The method comprises the following steps: 1, selecting single-core core rods according to design requirements of a to-be-manufactured large-diameter multi-core combined core rod; then performing pretreatment on the selected single-core core rods; 2, preparing a glue solution; 3, loading the pretreated core rod into a mold of an injection moulding machine, preheating, then injecting the preheated glue solution into a preheated mold, and performing heat preservation so as to obtain a molded product; and 4, performing after-curing treatment on the molded product, thereby obtaining the large-diameter multi-core combined core rod. The multi-core combined core rod manufactured by the method is formed by combining multiple single-core core rods and then performing injection molding with the glue solution; the sectional diameter of the manufactured core rod is not less than 170mm, and belongs to the large diameter category; the multi-core combined core rod is excellent in performance, and meets relevant technical requirements of core rods for composite insulators.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a method for manufacturing a large-diameter multi-core combined mandrel. Background technique [0002] With the development of ultra-high voltage levels above 800kV and 1100kV for power transmission and transformation, in order to ensure the reliability of power transmission and transformation, the design of post insulators has gradually developed from a few meters high in the past to a height of more than ten meters or even higher. From a structural point of view The requirements for the diameter of composite insulator core rods are also increasing, and there are many technical defects in the process of manufacturing composite insulator core rods using traditional pultrusion production processes, making it difficult to produce composite insulators with a diameter of more than 170mm by traditional processes Use a large diameter mandrel. Therefo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/00B29C45/14
Inventor 张宝英
Owner 西安高强绝缘电气有限责任公司
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