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Cable branch box wall bushing and its series connection assembly

A cable branch box and wall bushing technology, applied in electrical components and other directions, can solve problems such as affecting the reliability of power supply, inability to connect live, economic losses, etc., to achieve safe and fast assembly and mobility, improve power supply reliability, and mechanical stability. strong effect

Active Publication Date: 2017-06-16
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wall bushings of the two structures are linear structures. The incoming power cable is connected to the wall bushing through the front connector and the conductive rod, and the receiving power cable is connected to the wall bushing through the rear connector and the conductive rod. The front connector and the The rear joint is then connected in series with other joints through the intermediate joint and the conductive rod. The conductive rod, the front and rear joints and the middle joint are separate parts, and the following defects exist in the connection: the connection of the conductive rod part and the connection of the external insulation part need to be carried out one by one. The process is cumbersome, and it will lead to poor stability after the power cable is connected. In addition, the power must be cut off during the connection, and the live connection cannot be connected, which will affect the reliability of the power supply and cause economic losses.

Method used

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  • Cable branch box wall bushing and its series connection assembly
  • Cable branch box wall bushing and its series connection assembly
  • Cable branch box wall bushing and its series connection assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preferred embodiment one, such as figure 1 As shown, this embodiment discloses a wall-piercing bushing for a cable branch box and its serial connection assembly, including a T-shaped wall-piercing bushing 1, a butt joint 2, a T-shaped cable connection terminal 3, and an L-shaped cable connection terminal 4 and rubber mat5. The T-shaped wall-piercing sleeve 1, the T-shaped cable connection terminal 3 and the L-shaped cable connection terminal 4 are respectively connected as a whole through the butt joint 2, and rubber pads 5 are filled between them.

[0024] The T-shaped wall-piercing bushing 1 is an integrated integral part of a T-shaped connecting conductor 11 and a T-shaped hard insulator 12 . The three connection ends of the T-shaped connection conductor 11 all adopt the connection structure of internal threaded holes. The head and the bar of the T-shaped hard insulator 12 are straight pipes, and the outer wall of the head straight pipe has a mounting ring 121 with...

Embodiment 2

[0030] Preferred embodiment two, such as figure 2 As shown, the difference between this embodiment and the preferred embodiment 1 is that the connection structures of the T-shaped wall-piercing bushing 1 and the T-shaped cable connection terminal 3 and the butt ends of the inner conductors of the T-shaped cable connection terminal 3 are all external threaded heads. The conductor in the butt joint 2 is an internally threaded pipe.

Embodiment 3

[0031] Preferred embodiment three, such as image 3 As shown, the difference between this embodiment and the preferred embodiment 1 is that one end of the butt joint of the inner conductor of the T-shaped wall bushing 1 and the T-shaped cable connection terminal 3 is an external thread head, and the other end is an internal thread hole. The L-shaped cable connection terminal has two structures, one structure is the same as the preferred embodiment 1, and the other structure is the same as the preferred embodiment 2.

[0032] The operations of the preferred embodiment 2 and the preferred embodiment 3 are the same as those of the preferred embodiment 1.

[0033] The present invention can also combine different structures of the T-shaped wall-piercing sleeve, the butt joint, the T-shaped cable connection terminal, and the L-shaped cable connection terminal to form various series connection components according to actual needs.

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PUM

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Abstract

The invention discloses a wall-piercing bushing of a cable branch box and a series connection assembly thereof, including a T-shaped wall-piercing bushing, a butt joint and a cable connection terminal, all of which are integral bodies in which the connecting conductor is insulated and sealed in a hard insulator The connecting ends of the connecting conductors all adopt screw connection structure, and the connecting ends of the hard insulators all have arc extinguishing chambers. Both ends of the sleeve, to connect simply twist the butt joint. The outer wall of the head of the T-type wall bushing rigid insulator has a mounting ring with mounting holes. The rod part of the T-shaped wall-through bushing is connected with the power supply cable before being installed and fixed on the cable branch box through the wall, so that the mechanical stability is strong. The connection points of each connecting conductor are all in the arc extinguishing chamber, and the staff only touch the insulator when operating, which can realize live connection operation, reduce the scope of power failure, and improve the reliability of power supply.

Description

technical field [0001] The invention relates to a connection component of a cable branch box, in particular to a cable branch box wall-piercing sleeve and a serial connection assembly thereof. Background technique [0002] The current European-style cable branch boxes use wedge-shaped screw-type wall-through bushings as connecting busbars, and American-style cable branch boxes use screw-type wall-through bushings as connecting busbars, and then realize cable branch or transfer. The wall bushings of the two structures are linear structures. The incoming power cable is connected to the wall bushing through the front connector and the conductive rod, and the receiving power cable is connected to the wall bushing through the rear connector and the conductive rod. The front connector and the The rear joint is then connected in series with other joints through the intermediate joint and the conductive rod. The conductive rod, the front and rear joints and the middle joint are sep...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G3/22H02G3/06
Inventor 邓晓廉刘军志
Owner STATE GRID CORP OF CHINA