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±1120kv DC Rod Porcelain Insulator

A technology of porcelain insulators and insulators, applied in the field of DC rod-shaped porcelain insulators, can solve the problems of low torsional strength of composite insulators, incomplete production process, aging and deterioration of composite insulators, etc. Effect of steep wave impact damage and interface aging, high internal insulation strength

Inactive Publication Date: 2011-12-21
FUSHUN ELECTRIC PORCELAIN MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the porcelain insulator is designed according to 54㎜ / kV, its total height will be more than 20m, which affects its mechanical strength, and the production process cannot be completed.
Comparing composite insulators with porcelain insulators; 1. Composite insulators have serious aging and deterioration, and their aging speed is very fast; 2. Composite insulators have low strength, poor rigidity, and are prone to bending deformation, especially the compressive strength is very low, so they are not suitable for supporting Objects with high mechanical height and heavy weight; 3. Composite insulators have low torsional strength and are prone to torsional deformation; 4. Composite insulators are prone to internal interface problems of the insulating body, and their internal dielectric strength is low, which may cause damage to steep waves and shocks. The interface is aging, and we are also worried about the creep caused by long-term load bearing, and we are even more worried about the air leakage affecting the insulation performance; 5. The use of composite insulator products has a complex supporting structure, and it is troublesome to install and replace; 6. The composite insulator needs to be repaired to a large scale replacement

Method used

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  • ±1120kv DC Rod Porcelain Insulator
  • ±1120kv DC Rod Porcelain Insulator
  • ±1120kv DC Rod Porcelain Insulator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1: This embodiment is a pillar DC rod-shaped porcelain insulator.

[0015] Such as figure 1 As shown in , the DC rod-shaped porcelain insulator is composed of 7 sections of porcelain elements of equal height, and the porcelain elements are fastened and connected by flanges. The length B of each porcelain element is 2100mm, and the total length A of the insulator is 14700mm. Among them: from left to right, the first section of porcelain components is made of porcelain part 2 and upper and lower flanges 1 and 3 through cement glue. The main body diameter C1 of porcelain part 2 is φ165-φ195mm, and φ185mm is selected for both. The maximum umbrella diameter is φ385mm; the second section of the porcelain component is made of porcelain part 5 and upper and lower flanges 4 and 6 through cement glue. Umbrella diameter is φ390mm; the porcelain element in Section 3 is made of porcelain part 8 and upper and lower flanges 7 and 9 glued together by cement glue. The diam...

Embodiment 2

[0030] Embodiment 2: This embodiment is to operate a DC rod-shaped porcelain insulator.

[0031] Such as image 3 As shown, the DC rod-shaped porcelain insulator is composed of 7 sections of porcelain elements of equal height, and the porcelain elements are tightly connected by flanges. The length B of each porcelain element is 2100mm, and the total length A of the insulator is 14700mm. Every section of porcelain element is made of porcelain parts 22 and upper and lower flanges 23 by cement glue. The main body diameter C of porcelain parts 22 is φ180-φ200mm, all selects φ190mm, and the maximum umbrella diameter is φ390mm. All the above flanges are made of QT450-10 material. The above-mentioned flange installation hole center distance - hole number - hole diameter is: φ300-8-φ18. The umbrella shape of the above-mentioned porcelain components adopts a pollution-resistant light umbrella structure with one large umbrella, one middle umbrella and one small umbrella, and no edge ...

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Abstract

The invention discloses a ±1120kV DC rod-shaped porcelain insulator, which is composed of 7 equal-height porcelain components. The connections are fastened by flanges. It is mainly used to support the isolating switch in the converter station of the ±1120kV UHV DC transmission project of the State Grid Corporation of China, and it plays the role of insulation and mechanical support for the isolating switch equipment. The DC rod-shaped porcelain insulator product of the present invention has good design structure, unique process performance, excellent antifouling ability, short production cycle, good product performance, beautiful appearance, the total height of the insulator is reduced to 14700mm, and the bending strength can reach 8kN and above.

Description

1. Technical field [0001] The invention belongs to the technical field of porcelain insulators, and specifically relates to DC rod-shaped porcelain insulators applicable to ±1120kV UHV DC power transmission projects with a bending strength of 8kN and above, mainly used in ±1120kV UHV DC power transmission projects of the State Grid Corporation of China It is used to support isolating switches in converter stations, and plays the role of insulation and mechanical support for isolating switchgear. 2. Background technology [0002] The scale of my country's UHV DC transmission projects is becoming larger and larger, and the safety and reliability of its equipment is very important. The use of insulators in the UHV DC transmission system is very large, which largely determines the insulation level of the transmission system and determines the safety and reliability of the transmission system. Therefore, it is necessary to vigorously study the material structure, electrical prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B17/00H01B17/04H01B17/38
Inventor 周军汤晓中张海滨侯冰王玲蒋建华胡旭东
Owner FUSHUN ELECTRIC PORCELAIN MFG CO LTD
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