Post insulator and insulation post

A technology of pillar insulators and insulating tubes, applied in the field of pillar insulators and insulating pillars, can solve problems such as gas leakage, achieve the effects of no maintenance and monitoring, large micro-water control margin, and reducing the difficulty of micro-water control and production and manufacturing.

Active Publication Date: 2018-07-06
JIANGSU SHENMA ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It also solves the gas leakage problem of high-pressure gas filling, making the post insulator free from inspection and maintenance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] like figure 1 As shown, the post insulator 100 of this embodiment includes a hollow insulating tube 110, an umbrella skirt 120 located on the periphery of the hollow insulating tube 110, and an upper flange 130 and a lower flange 140 arranged at both ends of the hollow insulating tube 110. The hollow insulating tube Gas is sealed inside 110, and the absolute pressure of the gas is 0.1-0.15Mpa.

[0042] The absolute pressure of the gas inside the post insulator 100 is set to be 0.1-0.15Mpa. The gas in the hollow insulating tube 110 is in a state of normal pressure, which is not easy to leak from the hollow insulating tube 110 , and avoids routine maintenance and monitoring of the post insulator 100 . Setting the gas inside the hollow insulating tube 100 at normal pressure can also meet the pressure differences between different regions and altitudes, so as to ensure that the gas inside the hollow insulating tube 110 is in a non-negative pressure state when used in diffe...

Embodiment 2

[0066] like figure 2 As shown, the post insulator 200 of this embodiment is similar in structure to the post insulator 100 in the first embodiment of the inventive post insulator. Here, the same structure will not be repeated here. The difference is that the gas and absolute pressure filled inside the post insulator 200 in this embodiment are different from those of the post insulator 100 . The drying device 260 is disposed on the upper flange 230 .

[0067] Wherein, the gas is dried high-purity nitrogen, air or sulfur hexafluoride gas.

[0068] In this embodiment, the gas is dried air. The absolute pressure of the air in the hollow insulating tube 210 is controlled to be 0.15Mpa.

[0069] Good air stability, economical and practical, filled in the hollow insulating tube 210, the absolute air pressure is controlled to 0.15 atmospheres, effectively avoiding gas leakage. Moreover, the slightly positive pressure gas can also adapt to the air pressure difference existing in ...

Embodiment 3

[0085] like Figure 5 As shown, the post insulator 300 of this embodiment is similar in structure to the post insulator 100 in the first embodiment of the inventive post insulator. The specific structure of the drying device 360 ​​in this embodiment is the same as that of the drying device 260 in the second embodiment. Here, the same structure will not be repeated here. The difference from Embodiment 1 and Embodiment 2 is that in this embodiment, the hollow insulating tube 310 is filled with 0.13Mpa sulfur hexafluoride gas. Both the self-sealing valve 350 and the drying device 360 ​​are arranged on the upper flange 330 .

[0086] Wherein, the gas is dried high-purity nitrogen, air or sulfur hexafluoride gas.

[0087] In this embodiment, the gas is dried sulfur hexafluoride gas. The absolute air pressure of the air inside the hollow insulating tube 310 is controlled to be 0.13Mpa.

[0088] Wherein, a self-sealing valve 350 is provided on the upper flange 330 and / or the low...

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Abstract

The invention discloses a post insulator which comprises a hollow insulation tube, a shed on the periphery of the hollow insulation tube, and an upper flange and a lower flange respectively arranged at the two ends of the hollow insulation tube. The hollow insulation tube is filled with gas hermetically, and the absolute pressure of the gas is equal to 0.1-0.15Mpa. The invention further disclosesan insulation post which is formed by connecting the post insulators end to end. According to the post insulator and the insulation post, the problem about interfaces in padding of internal insulationsolid materials and the problem of gas leakage in use of high-pressure gas filling are both solved, and detection and maintenance of the post insulator are avoided; besides, micro-water control rangemargin is increased while difficulty in micro-water control and production and manufacturing is lowered.

Description

technical field [0001] The invention relates to the field of power transmission and transformation insulation equipment, in particular to a post insulator and an insulating post. Background technique [0002] With the development and application of composite insulators, most post insulators used in power equipment are large-diameter composite insulators. Composite post insulators include hollow composite insulating tubes and insulating substances filled in the insulating tubes to meet the electrical and mechanical properties of power equipment. Existing insulating material filling generally includes solid filling and gas filling. Solid filling is generally filled with polyurethane material in the hollow insulating tube, and gas filling is generally filled with high-pressure nitrogen in the hollow insulating tube. [0003] However, solid filling and high-pressure gas filling face practical problems that need to be solved urgently. Possible interfacial problems with solid f...

Claims

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Application Information

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IPC IPC(8): H01B17/14H01B17/16H01B17/36
CPCH01B17/145H01B17/16H01B17/36H01B17/14
Inventor 马斌方江张栋葛刘超郁杰倪桂炎
Owner JIANGSU SHENMA ELECTRIC CO LTD
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