Insulation structure of lead line

Abstract

The invention discloses an insulation structure of a lead line. The insulation structure comprises a bracket and an insulation hoop plate connected with the bracket through fasteners; the insulation hoop plate is an arched structure with a plane middle and two arc ends; flat wings are arranged at two ends of the insulation hoop plate in arched structure, and through holes for fasteners are arranged on the wings of two ends; the insulation hoop plate is sleeved at the outside of the branching lead line and connected with the bracket through the fasteners. By adopting the arched insulation hoopplate, the insulation structure can be attached to the cable, so that the fixation of the branching lead line is firmer; the manufacturing process of the platy insulation hoop plate is simple, and thehidden trouble that the bubbles are easily existent in the original block laminated paper board is avoided; and the insulation structure disclosed by the invention is small in mounting size, the distance between a phenolic aldehyde screw and a fuel tank wall is greatly reduced, and the discharge danger caused by close distance between the bolt and the tank wall is eliminated.

Description

technical field [0001] The invention relates to a clamp used in a transformer, in particular to an insulation structure used for clamping a tap lead wire of a transformer. Background technique [0002] In the transformer structure, the traditional clamps for clamping high-voltage tap leads are generally made of block-shaped laminated cardboard, because the thickness of the laminated cardboard must be The diameter of the cable is larger than that of the tap lead, and then a groove is dug out at the position of the tap lead to buckle the tap lead, which is a waste of material, and the thicker laminated cardboard is slightly improper in the process of processing This will cause the fixture to form tiny air bubbles, which is a hidden danger of partial discharge; in addition, the block-shaped laminated cardboard itself is relatively thick, and it needs to be fixed with insulating bolts and nuts during installation, which also makes the tap lead The already limited space between ...

AI Technical Summary

Problems solved by technology

[0002] In the transformer structure, the traditional clamps for clamping high-voltage tap leads are generally made of block-shaped laminated cardboard, because the thickness of the laminated cardboard must be The diameter of the cable is larger than that of the tap lead, and then a groove is dug out at the position of the tap lead to buckle the tap lead, which is a waste of material, and the thicker laminated cardboard is slightly improper in the process of processing This will cause the fixture to form tiny air bubbles, which is a hidden danger of partial discharge; in addition, the block-shaped laminated cardboard itself is relatively thick, and it needs to be fixed with insulating bolts and nuts during installation, which also makes the tap lead The already limited space between the cable and the box wall is even more insufficient; and the two ends of the laminated cardboard of this structure are thicker, the elasticity is poor, and the thinner part in the middle is easy to crack, which affects the effect of fixing the tap lead.

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