Sealed switchgear box

Abstract

The invention discloses a box body of a sealing switch cabinet. The box body comprises a front sealing plate, a side sealing plate and a rear sealing plate which are mutually spliced; joints among the sealing plates are filled and sealed with sealant; the front sealing plate is provided with a rotating axial hole; and a sealing ring is arranged on the periphery of the rotating axial hole. The box body of the switch cabinet, which is disclosed by the invention, is of a framework structure formed by steel plates; the framework structure combines and applies a static seal of the box body and a moving seal of the box body to form a sealing box body of the switch cabinet and ensure air not to enter the interior of the box body from the box body joint and the operation rotating shaft hole, wherein the static seal of the box body is formed by filling and sealing a long-effective sealant for a sheet metal box board; and the moving seal of the box body is formed by splicing the sealing ring with the operation rotating axial hole. In addition, a natural ventilation channel groove is arranged in the box body for enabling electrical elements inside the box body to ventilate and radiate heat; meanwhile, an air cleaning device is arranged at an inlet of an air exchange hole so as to ensure that clean air enters the interior of the cabinet and play a role of reducing the temperature in the cabinet; and the cleanness in the cabinet is ensured and the reduction of insulation strength in the cabinet during long-term operation is reduced.

Description

technical field [0001] The invention relates to a switch cabinet box body, in particular to a sealed switch cabinet box body. Background technique [0002] Chinese Patent Literature No. CN1048300 disclosed on January 2, 1991 that the frame structure of a sealed switchgear cabinet was made of the same frame parts made of angled pieces, and the edges of the angled pieces were bent at right angles to form curved Fold the ends. However, the edges of the corner piece are joined to each other by means of a diagonal (hypotenuse) seal, which provides a seal between the two switchgear panels and forms the corner connection. The flat and bent edges are attached to the frame by means of parts. The switchgear cabinet of this structure is not a sealed structure in essence, because there are gaps in the connection of each surface, and dust can enter the switchgear through these gaps, affecting the heat dissipation of the electrical components inside the switchgear and the safety of use....

AI Technical Summary

Problems solved by technology

The switchgear cabinet of this structure is not a sealed structure in essence, because there are gaps in the connection of each surface, and dust can enter the switchgear through these gaps, affecting the heat dissipation of the electrical components inside the switchgear and the safety of use.

In addition, switch cabinets with the above-mentioned structure generally need to install natural ventilation channel devices to ensure ventilation and heat dissipation inside the cabinet. However, due to the large amount of impurities such as dust in the air outside the cabinet, when the impurities in the air enter the cabinet, it will affect the heat dissipation. Effect, long-term use reduces the insulation strength between electrical components in the cabinet

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