A butt joint connection device and method for a single-phase single-piece transition conductor of a bus duct joint

Abstract

The invention relates to a device and method for butting a single-phase single-sheet transition conductor of a bus duct connector. The device comprises double-insertion-sheet type bus duct connectors (2) and single-insertion-sheet type bus duct connectors (3) which are arrayed in sequence, and when the power supply is of a three-phase four-wire system, one single-insertion-sheet type bus duct connector (3), the double-insertion-sheet type bus duct connector (2) and another single-insertion-sheet type bus duct connector (3) are arrayed in sequence. Each double-insertion-sheet type bus duct connector (2) comprises a two-phase insulating sheet (21) and a transition conductor (22). The connection method is as follows: dividing the end of a bus duct into branches with prestress, inserting the B-phase branch and C-phase branch of the power supply into the double-insertion-sheet type bus duct connectors (2) respectively, and inserting the single-insertion-sheet type bus duct connectors (3) between the A-phase branch and the B-phase branch, between the C-phase branch and the N-phase branch and between the N-phase branch and the PE-phase branch respectively. Due to the clamping function of the prestressed branches of a bus duct conductor bar (1), the conductor of the connector can be matched tightly before being fastened by insulating bolts (7).

Description

technical field [0001] The invention relates to a connection method for single-phase single-piece butt joint of bus duct conductors, and belongs to the technical field of bus duct joint butt joint connection. Background technique [0002] The existing butt-joint busway connector, as described in the patent No. ZL200720038303.8, uses double connecting pieces to overlap the single-phase conductor of the busbar, and is fixed and fastened by the insulating bolts in the middle through the guard plate and the module. The fixed pressure plate and the insulating guard plate are forced to make the conductive bar and the bus bar conductors come into close contact, but the actual effect cannot achieve close contact. This is because the existing connector technology uses this fixing method and structure, and the conductive bar The lap joint with the bus bar adopts the contact method of single-phase double conductive bar. Due to the limitation of the insulation shield of the connector, c...

AI Technical Summary

Problems solved by technology

[0002] The existing butt-joint busway connector, as described in the patent No. ZL200720038303.8, uses double connecting pieces to overlap the single-phase conductor of the busbar, and is fixed and fastened by the insulating bolts in the middle through the guard plate and the module. The fixed pressure plate and the insulating guard plate are forced to make the conductive bar and the bus bar conductors come into close contact, but the actual effect cannot achieve close contact. This is because the existing connector technology uses this fixing method and structure, and the conductive bar The lap joint with the bus bar adopts the contact method of single-phase double conductive bar. Due to the limitation of the insulation shield of the connector, considering the convenience of installation, the distance between the ends of the bus bar is relatively loose, and the contact tightness between the conductors depends entirely on Tightening of fixing bolts

And the locking bolt exerts force from the middle, and after the force is applied, the guard plate and the insulating guard plate will have a bow-shaped stress tendency, that is, the middle is tight and the two sides are loose, so the conductive bar and the bus conductor cannot all be in close contact. The design of the connection method itself has the problem of uneven force

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