Column type insulator used for high-voltage line
A technology for high-voltage lines and insulators, applied in the direction of insulators, supporting insulators, circuits, etc., can solve the problems of increased manufacturing costs, waste, and less cost considerations, and achieve cost savings, reduced manufacturing costs, and guaranteed creepage distances.
Inactive Publication Date: 2013-03-13
SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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Problems solved by technology
In order to increase the creepage distance to prevent flashover on the surface of the insulator due to thunderstorms or serious air pollution, it is necessary to set up an umbrella rib structure. However, the cost of the umbrella rib structure has been less considered, or simply as long as the creepage distance is satisfied Just set the number of layers of the umbrella edge as much as possible, so that the manufacturing cost increases
Because the application of insulators is generally a large-scale application with a large number, it will cause great waste as a whole
Method used
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[0015] The present invention will be further described below in conjunction with accompanying drawing.
[0016] see figure 1 , the post-type insulator for high-voltage lines of the present invention includes a post-shaped insulator 1 and a metal cap 2 sleeved on the bottom end of the insulator 1, and a bolt 5 extends axially outward from the middle of the outer end of the metal cap 2, The bolt 5 is directly connected to the iron cross arm, so that the present invention can be conveniently installed in various occasions;
[0017] The diameter of the insulator 1 is 60 ~ 70mm; the middle part of the insulator 1 is provided with four layers of umbrella edges with equal spacing and the spacing h is 35 ~ 39mm, and the distance H between the bottom layer of the umbrella edges and the metal cap 2 in the four layers of umbrella edges is 45~55mm, which can make the insulation linear distance L stretched to 193mm; the diameter D of each of the four umbrella ribs is 120~124mm; in summary...
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Abstract
The invention discloses a column type insulator used for a high-voltage line. The column type insulator comprises a columnar insulator body and a metal cap which is sleeved at the bottom end of the insulator body, wherein a bolt which axially extends outwards is arranged at the middle of the outer end of the metal cap; four umbrella edge layers with equal spaces of 35-39mm are arranged at the middle of the insulator body; the diameters of the four umbrella edge layers are all 120-124mm; and the space between the umbrella edge at the bottommost layer and the metal cap is 45-55mm. With the arrangement of the reasonable umbrella edge structure, the manufacturing cost is reduced on the premise that the creep distance is ensured, so that the column type insulator is suitable for large-scale application.
Description
technical field [0001] The invention relates to an insulator, in particular to a column insulator used for high-voltage lines. Background technique [0002] Insulators are mainly used in high and low voltage transmission and transformation lines for insulation and support. At present, post insulators are widely used in high-voltage transmission and transformation lines, which have many advantages, such as: small size, light weight, long life, no need to detect zero value, good self-cleaning performance, etc. In order to increase the creepage distance to prevent flashover on the surface of the insulator due to thunderstorms or serious air pollution, it is necessary to set up an umbrella rib structure. However, the cost of the umbrella rib structure has been less considered, or simply as long as the creepage distance is satisfied Just set the number of layers of the umbrella edge as much as possible, so that the manufacturing cost increases. Because the application of insula...
Claims
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IPC IPC(8): H01B17/14H01B17/42
Inventor 陈勇颜华敏叶清杨国健沈晓峰汪军王大成张树欣李轶袁斐吴健成吴才彪周华胡声波施启元金鼎
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO