Anti-flashover RTV (Room Temperature Vulcanization) coating material coating method for umbrella-shaped and bell-shaped insulators

An antifouling flashover coating and coating method technology, applied in the direction of insulators, electrical components, circuits, etc., can solve the problems of uneven spraying, complex shape, deep groove of umbrella ring, etc., and achieve smooth surface, high product quality, coating The effect of uniform thickness

Active Publication Date: 2015-05-20
眉山拓利科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, RTV coatings are applied on umbrella and bell-shaped insulators. The main construction methods are spraying, dipping and brushing. Most of the construction methods are in the field On-site construction, the quality of the applied RTV anti-pollution flashover coating cannot be guaranteed
In addition, due to the special structure and complex shape of umbrella and bell-shaped insulators, especially for umbrella-shaped insulators with two, three or more layers, the grooves of the umbrella rings are deep, and dead angles are prone to appear during the spraying process, and the spraying is uneven and the thickness is difficult to grasp. , prone to paint dripping, skinning, accumulation and air bubbles, poor quality and unstable
In the spraying process, after one spraying and surface drying of the paint, it needs to be sprayed and surface dried again, and repeated many times, the interval time is long, time-consuming and labor-intensive, and the production efficiency is relatively low

Method used

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  • Anti-flashover RTV (Room Temperature Vulcanization) coating material coating method for umbrella-shaped and bell-shaped insulators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A kind of coating method of umbrella, bell shape insulator RTV antipollution flashover paint, the steps are as follows:

[0036] (1) Pretreatment: Clean the qualified insulators and pretreat the metal fittings; check whether the insulators have certificates of conformity, whether there are defects, cracks, damage, pores, mechanical impurities, and oil stains that are difficult to clean on the surface of the insulators;

[0037] (2) On-machine: Connect the insulator to the head of the equipment, and put the paint into the tooling equipment; it can detect whether the insulator has a certificate of conformity, whether the insulator surface has defects, cracks, damage, pores, mechanical impurities, oil stains that are difficult to clean, etc. .

[0038] (3) Coating: Dip the insulator in the paint for spin coating; paint during the spin process to prevent uneven coating, dripping and accumulation of the paint on the insulator during the coating process. The steps of spin co...

Embodiment 2

[0048] Other steps are as in Example 1, the solid content of the paint is 65%, and the surface dry time of the paint is 20 minutes.

[0049] The viscosity of the coating is tested by coating 4 cups, and the viscosity is 15 minutes.

[0050] The dipping step is that the head of the coating equipment is tilted to immerse the insulator in the paint and rotate the coating, the downward slope is 50°C, the speed is 15 rpm, and the time is 50s.

[0051] The material throwing step is to make the insulator completely leave the coating liquid surface and then rotate for 5 minutes at a speed of 90 rpm and a downward slope of 50°.

[0052] The closing step is to adjust the head of the coating equipment to raise the insulator, the inclination is 30°, the time is 90s, and the speed is 15 rpm; the edge closing step is to place the insulator in the horizontal direction during rotation, the inclination is -5°, and the surface dry time is 80min , the speed is 10 rev / min.

[0053] Curing time ...

Embodiment 3

[0055] Other steps are as in Example 1, the solid content of the coating is 55%, and the surface drying time of the coating is 45 minutes.

[0056] The viscosity of the coating is tested by coating 4 cups, and the viscosity is 50min.

[0057] The dipping step is to tilt the head of the coating equipment to immerse the insulator in the coating and rotate the coating, the downward slope is 45°, the speed is 10 rpm, and the time is 60s; the material rejection step is to make the insulator completely leave the coating liquid surface and then rotate for 3 minutes , the speed is 60 rpm, and the downward slope is 45°.

[0058] The closing step is to adjust the insulator on the head of the coating equipment, the inclination is 25°, the time is 40s, and the speed is 18 revolutions / min; The speed is 12 revolutions / min.

[0059] Curing time 24h, temperature 20°C, humidity 60%;

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Abstract

The invention belongs to the field of insulator coating and particularly relates to an anti-flashover RTV (Room Temperature Vulcanization) coating material coating method for umbrella-shaped and bell-shaped insulators. The coating method comprises the step of preparing the umbrella-shaped or bell-shaped insulators, coating equipment, a coating material, a related vessel and tooling appliances and is characterized by comprising the following steps of pretreating the umbrella-shaped or bell-shaped insulators, detecting, loading, rotatably dipping the umbrella-shaped or bell-shaped insulators into the coating material, coating, then, unloading, detecting appearance, storing for curing, re-detecting, packaging and storing or transporting. The coating method provided by the invention has the advantages that the operation is simple, the cost is low, the pollution is low, the production is safe, the process from dip-coating to initial curing can be automatically controlled, the quality of products is easy to control, the productivity is high, the coating is uniform, and the appearance is smooth, is free from bubbles, dropping and accumulation and is consistent in thickness.

Description

technical field [0001] The invention belongs to the field of insulators, and in particular relates to a coating method of an RTV anti-pollution flashover paint for umbrella and bell-shaped insulators. Background technique [0002] Umbrella and bell-shaped insulators are widely used in substations and high-voltage transmission lines. They are commonly used outdoor insulators, and their application places determine that they need to have good anti-pollution flashover performance. In order to avoid the occurrence of pollution flashover accidents, various measures such as increasing the creepage distance, water washing, semiconductor glaze insulators and spraying hydrophobic coatings are generally adopted. However, in the anti-fouling flashover of substations and high-voltage transmission lines, the creepage adjustment is limited, and the replacement of equipment or external insulation components is time-consuming and expensive. Water flushing, while effective, is very laboriou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B19/00H01B19/04
Inventor 陈群跃张先银周宁陶云峰方辉
Owner 眉山拓利科技有限公司
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