Polymer insulator

A technology of insulators and polymers, applied in the direction of insulators, suspension/strain insulators, electrical components, etc., can solve problems such as electrical breakdown and cracks in the umbrella part 54, and achieve the effect of reducing the amount of rubber

Inactive Publication Date: 2003-10-08
NGK INSULATORS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the umbrella portion 54 in the prior art is as figure 2 As shown, the thickness of the entire umbrella is constant
Therefore, when the umbrella portion 54 is made relatively thin, during the storage and use of the polymer insulator 51, the umbrella portion 54 will be bent and deformed due to the weight of the polymer insulator 51, and cracks will occur at the root of the umbrella portion 54. And other quality problems, and in the tracking wheel test of the CEA standard, there are performance problems that may cause electrical breakdown at the umbrella 54 at both ends of the strong electric field
[0004] The purpose of the present invention is to solve the above problems and provide a polymer insulator that can reduce the amount of rubber used without causing problems of quality and performance degradation.

Method used

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Embodiment Construction

[0011] figure 1 It is a partial sectional view showing the structure of an example of the polymer insulator of the present invention. exist figure 1 In the example shown, the polymer insulator 1 is composed of an FRP core 2 as a core member, a casing 5 formed of a cylindrical portion 3 and an umbrella portion 4 disposed on the outer periphery of the FRP core 2, and grips disposed at both ends of the FRP core. Accessories 6 constitute. The above structure is the same as the prior art polymer insulator. The present invention is characterized by, as figure 1 As shown, among the plurality of umbrellas 4 , the thickness of the umbrellas 4 at both ends is thicker than the thickness of the umbrellas 4 other than the two ends.

[0012] That is, in figure 1 In the example shown, the thickness ( T1 ) of the canopy 4 at both ends is thicker than the thickness ( T2 ) of the canopy 4 other than both ends. In addition, for the thickness (T1) of the umbrella portion 4 at both ends,...

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Abstract

A polymer insulator capable of reducing usage of rubber without reducing quality or performance, is provided. In a housing (5) composed of a core member (2), a cylinder portion (3) and umbrella portions (4) which are provided around the core member (2), and in a polymer insulator (1) provided at two ends of the core member (2) and composed of holding components (6), at least the thickness of the umbrella portions (4) at two ends are thicker than that of other umbrella portions (4).

Description

technical field [0001] The present invention relates to a polymer insulator composed of a core member, a casing formed of a cylindrical portion and an umbrella portion arranged around the core member, and holding fittings provided at both ends of the core member. Background technique [0002] In the prior art, for example, it is known as figure 2 One example is a polymer insulator 51 composed of a core member 52 , a casing 55 formed of a cylindrical portion 53 and an umbrella portion 54 disposed around the core member 52 , and holding fittings 56 disposed at both ends of the core member 52 . In this kind of polymer insulator 51 , especially in a polymer insulator for power distribution with a withstand voltage of 6.6 kV in a small size, in order to reduce the cost of the polymer insulator, it is desirable to manufacture the cylindrical part 53 and the umbrella part 54 It is made thinner in order to reduce the amount of rubber used as a material for forming the case 55. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/02H01B17/00H01B17/32H01B17/42
CPCH01B17/325
Inventor 大川恭史
Owner NGK INSULATORS LTD
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