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Double module injection molding technique of extra-high voltage combined insulator

A composite insulator and injection molding technology, applied in the direction of coating, etc., can solve the problems of low production efficiency, high cost, and many production processes

Inactive Publication Date: 2009-03-18
JIANGSU CHANGGONG ELECTRIC POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Using this process method to produce composite insulators with a voltage level above 500kV has many joints, many production processes, low production efficiency and high cost.

Method used

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  • Double module injection molding technique of extra-high voltage combined insulator
  • Double module injection molding technique of extra-high voltage combined insulator
  • Double module injection molding technique of extra-high voltage combined insulator

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Embodiment Construction

[0022] A two-mold injection molding process for UHV composite insulators. The steps of the two-mold injection molding process for UHV composite insulators are as follows:

[0023] Prepare finished rubber materials, and prepare crimping mandrels, release agents, coupling agents, brushes, sand skins and auxiliary demoulding tools; check injection equipment, small ovens, injection molding molds, air compressors and other equipment performance, and debug to the best state; clean the crimping mandrel, and use a brush to evenly apply a layer of coupling agent as primer on the outer surface of the mandrel and the sealing part of the mandrel and the fitting; The crimping mandrel of the coupling agent is placed in a small oven and preheated to 100-120°C; at the same time, turn on the electric heating on the mold, preheat the mold to 165°C±10°C, clean the mold and apply a release agent, When applying the release agent, also apply the injection nozzle on the mold, place the preheated man...

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Abstract

The invention discloses a process for forming an extra-high voltage composite insulator with the voltage class of 1000kV alternating current and minus 800 to 800kV direct current by two-mould injection. In the process, a mandrel is arranged in a mould and is injected with glue stock through preheating the mandrel and the mould, and the extra-high voltage composite insulator is finished at a specific temperature condition. The manufacture process can reduce intermediate links in the process, and improve the manufacture efficiency, mainly because forming equipment of the extra-high voltage composite insulator is used in the process. The equipment is divided into an upper mould and a lower mould, wherein the upper mould and the lower mould are respectively clad by a platen heater; lengths of the moulds and the platen heaters are over 5.5 meters; and the upper mould and the lower mould are respectively connected with two groups of hydro-cylinders as power source; therefore, the uniform and stable effect of injection moulding of the extra-high voltage composite insulator can be ensured through lengthening the moulds and using the two groups of hydro-cylinders as pressure source. Furthermore, the process makes uses of a hydraulic mode for forming, thus not only reducing the risk of quality problem of the product possibly formed by reconnection of sectional production, but also reducing the working procedures.

Description

technical field [0001] The invention relates to a process and equipment for two-mode injection molding of UHV composite insulators, in particular to a process and equipment for two-mode injection molding of 1000kV AC and ±800kV DC composite insulators. Background technique [0002] At present, the overall injection molding technology is used to produce composite insulators. Generally, 1-mode injection molding for 110kV products, 2-mode injection molding for 220kV products, 3-mode injection molding for 330kV products, 4-mode injection molding for 500kV products, 7-mode injection molding for 750kV products, and 7-mode injection molding for 1000kV products are generally used. More than 10 molds are required for injection molding. The production of composite insulators with a voltage level above 500kV by this process method has many joints, many production processes, low production efficiency and high cost. Contents of the invention [0003] The invention provides a two-mode ...

Claims

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Application Information

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IPC IPC(8): B29C45/00B29C45/76B29C45/78B29C45/03B29C45/26B29C45/67
Inventor 张宏祥张斌张达武
Owner JIANGSU CHANGGONG ELECTRIC POWER EQUIP
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