Double-sealed full working condition outdoor metal-enclosed switchgear

Abstract

The invention discloses double-seal all-condition outdoor metal-enclosed switchgear and belongs to the technical field of electromechanical devices. The double-seal all-condition outdoor metal-enclosed switchgear comprises a high-protection double-layer insulated outer metal shell, a double-seal environment-friendly gas insulating looped network switch, an air circulation system and a heating and dehumidification system; the high-protection double-layer insulated outer metal shell is a double-layer shell structure, and a fireproof flame-retardant plate is filled between the two layers of the shell; and the double-seal environment-friendly gas insulating looped network switch comprises a first layer of a sealed air chamber, a second layer of a sealed air chamber, a secondary control terminal device, a cable inlet wire protection device and an all-condition current transformer. The double-seal all-condition outdoor metal-enclosed switchgear solves the technical problems such that the existing outdoor metal-enclosed switchgear cannot efficiently prevent corrosion from moisture, dunghill, ice and frost and salty fog to an internal looped network switch, and sharp insulation reduction and gradual cracking of electric field distribution results in insulation puncture, interphase short circuit and internal arcing and finally results in equipment explosion.

Description

technical field [0001] The invention belongs to the technical field of electromechanical equipment, and in particular relates to a double-sealed full-working-condition outdoor metal-enclosed switchgear. Background technique [0002] In the current power supply electrical industry, outdoor metal-enclosed switchgear, such as outdoor switch stations and cable branch boxes, etc. Sulfur hexafluoride-insulated ring network switch or air-insulated ring network switch is installed inside the metal shell, and the metal shell protects the internal sulfur hexafluoride-insulated ring network switch or air-insulated ring network switch. It has been widely used and promoted in the current power system. Since this type of outdoor metal-enclosed switchgear is installed outdoors, there are still many defects in this type of equipment according to different use locations and environmental conditions: [0003] 1. The metal casing cannot provide effective protection: [0004] Stainless steel,...

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