CN202307676U

CN202307676U - Insulating cylinder used for high-voltage circuit breaker arc extinguish chamber

Info

Publication number: CN202307676U
Application number: CN2011204466835U
Authority: CN
Inventors: 马占峰; 张文兵; 程立; 赵培
Original assignee: China XD Electric Co Ltd
Current assignee: China XD Electric Co Ltd
Priority date: 2011-11-11
Filing date: 2011-11-11
Publication date: 2012-07-04
Anticipated expiration: 2021-11-11

Abstract

The utility model discloses an insulating cylinder used for a high-voltage circuit breaker arc extinguish chamber, and the insulating cylinder comprises a polytetrafluoroethylene cylinder, wherein an epoxy glass cloth substrate is wound on the periphery of the polytetrafluoroethylene cylinder. The substrate of a vacuum gum dipping epoxy glass cloth has the characteristics of high intensity and high insulating property. The insulating cylinder can bear high-pressure gas generated when the circuit breaker is cut off without being damaged; polytetrafluoroethylene is heat-resisting and arc-resistant insulating material, so that the insulating cylinder can be directly installed on the arc area of the arc extinguish chamber to directly tolerate instantaneous high temperature of thousand degrees when the arc extinguish chamber is cut off, but the insulating property of the insulating cylinder is not changed; the tracking resistance paint on the outer wall of the insulating cylinder can be prevented from being damaged because the insulating cylinder can bear hot gas possibly generated outside when the circuit breaker is cut off; and meanwhile, the capability of the insulating cylinder in tolerating a high voltage can be improved.

Description

A kind of primary cut-out arc control device are used insulating cylinder

Technical field

The utility model relates to high-voltage switch gear manufacturing and design field; Be particularly related to the insulating cylinder between fracture in a kind of primary cut-out gas arc control device; Be applicable to the circuit breaker of each electric pressure, the superhigh temperature and the high pressure that produce in the time of can tolerating fracture and cut-off, and keep insulation property not to be damaged.

Background technology

In the primary cut-out gas arc control device; Some product needed have the solid insulation that connects fracture both sides different potentials; These insulating parts in the insulation property that keep between nominal situation circuit breaker fracture, the high temperature that produces when needing the tolerance circuit breaker to cut-off abnormal current usually, the erosion of gases at high pressure and do not destroy its insulation property.

At present, exhausted big how many arc-extinguishing chamber of circuit breaker are the epoxy glass fabric coiling with insulating cylinder and coat with lacquer at the anti-electric arc of surfaces coated.This mode, often can't effectively be born the high temperature up to several thousand degree that cut-offs moment, thereby make the solid insulation between fracture receive permanent destruction in the time of especially need cut-offfing the circuit breaker of vast capacity short-circuit flow in the occasion of the direct contact arc of insulating cylinder possibility.

The utility model content

The purpose of the utility model is to provide a kind of primary cut-out arc control device to use insulating cylinder, to solve the problems of the technologies described above.

To achieve these goals, the utility model adopts following technical scheme:

A kind of primary cut-out arc control device are used insulating cylinder, comprise the polytetrafluoroethylene tube, and said polytetrafluoroethylene tube periphery is wound with the epoxy glass fabric matrix.

The epoxy glass fabric matrix adopts vacuum-latexed technology directly to be wound on the polytetrafluoroethylene tube, and the two one-shot forming is processed, and between epoxy glass fabric matrix and the polytetrafluoroethylene tube bond layer is not set.

The polytetrafluoroethylene tube is the tubular structure of a compression moulding, does not axially have bonding crack.

Be provided with anti-electric trace insulation enamelled coating external week of epoxide glass cloth base.

With respect to prior art; The utlity model has following advantage: a kind of primary cut-out arc control device of the utility model are used insulating cylinder; Its matrix adopting vacuum-latexed epoxy glass fabric coiling forms, and matrix inside is lined with a polytetrafluoroethylene tube, and the insulating cylinder outer wall scribbles the insulating varnish of the anti-electric trace of one deck; The hot gas that the outside possibly occur in the time of can making insulating cylinder bear circuit breaker to cut-off and not damaging improves the ability of its tolerating high voltage simultaneously; The matrix of vacuum-latexed epoxy glass fabric has the characteristics of high strength, high insulating property, gases at high pressure that produce in the time of can making insulating cylinder can bear circuit breaker to cut-off and not destroying; Polytetrafluoroethylene is a kind of insulating material of resistant to elevated temperatures, anti-electric arc, can make insulating cylinder can directly be installed on the arc zone of arc control device, the high temperature of instantaneous several thousand degree that produce when directly tolerating arc control device and cut-offfing and do not change its insulation property; The hot gas that the outside possibly occur when the anti-electric trace lacquer of insulating cylinder outer wall can make insulating cylinder bear circuit breaker to cut-off and not damaging improves the ability of its tolerating high voltage simultaneously; The matrix of epoxy glass fabric directly is wound on the polytetrafluoroethylene tube, the two seamless combination, and one-shot forming, the polytetrafluoroethylene back boxing is whole tubular structure, no abutment joint has overcome the factor that influences its insulation property that insulating cylinder inside possibly exist.

Description of drawings

Fig. 1 is the structure charts of a kind of primary cut-out arc control device of the utility model with insulating cylinder;

Wherein: 1 is the epoxy glass fabric matrix; 2 polytetrafluoroethylene tubes; 3 anti-electric trace insulation enamelled coatings; 20 is installation gap.

Embodiment

Specify the technical scheme of the utility model below in conjunction with accompanying drawing.

See also shown in Figure 1ly, the utility model is that a kind of primary cut-out arc control device are used insulating cylinder, comprises polytetrafluoroethylene tube 2; Epoxy glass fabric matrix 1 directly is wrapped in the outer surface of polytetrafluoroethylene tube 2, wherein with vacuum-latexed technology; Polytetrafluoroethylene tube 2 outer walls are through chemical activation; Guarantee that but it has cementability, the vacuum-latexed technique for coiling processes installation gap 20 at polytetrafluoroethylene tube 2 two ends of insulating cylinder after accomplishing on demand; Epoxy glass fabric matrix 1 outer wall at insulating cylinder is coated with anti-electric trace insulating varnish then, to form anti-electric trace insulation enamelled coating 3.

Claims

1. primary cut-out arc control device are used insulating cylinder, it is characterized in that, comprise polytetrafluoroethylene tube (2), and said polytetrafluoroethylene tube (2) periphery is wound with epoxy glass fabric matrix (1).

2. a kind of primary cut-out arc control device according to claim 1 are used insulating cylinder; It is characterized in that; Epoxy glass fabric matrix (1) adopts vacuum-latexed technology directly to be wound on the polytetrafluoroethylene tube (2); The two one-shot forming is processed, and between epoxy glass fabric matrix (1) and the polytetrafluoroethylene tube (2) bond layer is not set.

3. a kind of primary cut-out arc control device according to claim 1 are used insulating cylinder, it is characterized in that, polytetrafluoroethylene tube (2) is the tubular structure of a compression moulding, does not axially have bonding crack.