Three-pipe type flexible composite insulated cross arm

A technology of composite insulation and insulation cross arm

Inactive Publication Date: 2017-05-17
CHANGSHU FENGFAN POWER EQUIP
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  • Abstract
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Problems solved by technology

[0003] With the development of science and technology, foreign countries have combined insulators and supporting structures to develop rigid insulating cross-arms. However, with the increase of voltage levels, the size and specifications of insulating cross-arms have greatly increased, which greatly increases the cost of manufacturing. Difficulty, and the existing rigid insulating cross-arm can only meet the use of low-voltage transmission line towers, not suitable for high-voltage, UHV line towers

Method used

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  • Three-pipe type flexible composite insulated cross arm
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Embodiment Construction

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0018] see figure 1 and figure 2 , the embodiment of the present invention includes:

[0019] A three-tube flexible composite insulating cross-arm, which is formed by hinged connection of three tubular insulating cross-arm parts 1, which can ensure that each tubular insulating cross-arm part 1 only bears axial tension, and at the same time, the hinged flexible The insulating cross-arm structure, which can rotate freely in the direction of the line, can reduce the load on the iron tower in the disconnected state. Therefore, the flexible insulating cross-arm no longer needs to hang a fitting string like the rigid insulating cross-arm.

[0020] T...

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Abstract

The invention discloses a three-pipe type flexible composite insulated cross arm. The three-pipe type flexible composite insulated cross arm is formed in the mode that three pipe-type insulated cross arm parts are connected with one another in a hinged mode, and each pipe-type insulated cross arm part comprises a composite material insulated inner core pipe and an umbrella skirt on the side surface of the composite material insulated inner core pipe of pressure gel. In this way, according to the three-pipe type flexible composite insulated cross arm, a design concept of a former rigid insulated cross arm is abandoned, a flexible structure which is formed in the way that the three pipe-type insulated cross arm parts are connected with one another in a hinged mode is adopted, the cross arm only bears axial tension and can freely rotate in the line direction, and load working on an iron tower under a disconnection condition is reduced; and meanwhile, the three-pipe type flexible composite insulated cross arm has enough mechanical strength and good ageing resistance and corrosion resistance performance, and using by high-voltage and ultra high voltage lines is met.

Description

technical field [0001] The invention relates to the technical field of iron tower cross-arms for UHV and high-voltage transmission lines, in particular to a three-pipe flexible composite insulating cross-arm. Background technique [0002] The cross arm is the main support member of the transmission line tower. For a long time, the cross arm of the ultra-high voltage transmission lines in my country and even in the world has been operated in the form of steel structure suspension insulator strings. However, this mode of operation has great potential safety hazards in bad weather. For example, in windy weather, wire dancing will cause wind deflection flashover. In bad weather such as lightning, rain and fog, lightning flashover and ice flashover often occur Network, pollution flashover, mist flashover and other accidents threaten the safe operation of the power grid. In order to eliminate potential safety hazards in high-voltage power transmission, it is necessary to increase...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/24
CPCE04H12/24
Inventor 杨元春谢佐鹏顾邦蒋霓
Owner CHANGSHU FENGFAN POWER EQUIP
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