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Connection column for reducing temperature rise at electrician busbar lap joint part

A busbar overlapping and connecting column technology, which is applied in the direction of conductive connection, busbar installation, cable installation, etc., can solve the problems of increasing the amount of busbar, increasing the cost of equipment manufacturing, and increasing the space occupied by the busbar. Effects of reducing current density, saving resources, and reducing wiring width

Active Publication Date: 2016-08-24
龚柱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Increasing the overlapping length will increase the amount of busbars, which will increase the manufacturing cost of the equipment
The bolts used for fastening will reduce the electrical clearance or phase-to-phase distance between the busbars. In order to keep the electrical clearance or phase-to-phase distance unchanged, the distance between the busbars needs to be increased, and increasing the distance between the busbars will inevitably lead to the occupation of the busbars. bigger space

Method used

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  • Connection column for reducing temperature rise at electrician busbar lap joint part
  • Connection column for reducing temperature rise at electrician busbar lap joint part
  • Connection column for reducing temperature rise at electrician busbar lap joint part

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0068] The material of the first columnar part 1 in the first embodiment is changed to a copper alloy, and the material of the first columnar part 2 is changed to an aluminum alloy. Since the hardness of the alloy is relatively high, the first columnar part 2 can be placed in a low temperature environment ( 5 degrees) for a period of time (5 minutes), while the first columnar part 1 is stored for a period of time (5 minutes) in a high temperature environment (80 degrees), with the help of the effect of thermal expansion and contraction, the inner diameter of the first columnar part 1 Slightly larger, while the outer diameter of the first columnar part 1 is slightly smaller, and then the first columnar part 2 can be easily assembled into the first columnar part 1. After the assembled connecting column returns to normal temperature, the first columnar part 1 Interference fit with the first columnar part 2 can be realized. The diameter and length of the coupling column disclosed ...

Embodiment 3

[0070] Such as Figure 14-15 As shown, the inside of the second columnar part 2 is coaxially provided with a second through hole 7, the first columnar part 6 has a hollow structure, the second columnar part 2 penetrates the first columnar part 1, and the outer cylindrical surface of the first columnar part 1 A first through hole 6 is arranged radially, the first through hole 6 communicates with the second through hole 7 , and the first through hole 6 is located in the axial middle of the first columnar portion 1 .

[0071] Due to the setting of the through holes 6 and 7, when the connecting column is inserted into the prefabricated hole of the first busbar, the air in the prefabricated hole can be smoothly discharged from the second through hole 7, so that the connecting column can be smoothly assembled in place , when the second busbar is inserted into the already installed coupling column, the air in the prefabricated hole of the second busbar can be smoothly discharged from...

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Abstract

The invention discloses a connection column for reducing temperature rise at an electrician busbar lap joint part, belonging to the field of electrical equipment, and specifically relates to a connection column for an electrical busbar. The connection column is provided with a first cylindrical portion which is in interference fit with a pre-drilled hole in an electrician busbar, wherein the first cylindrical portion is provided with conductivity; a second cylindrical portion with conductivity is coaxially arranged in the first cylindrical portion; the first cylindrical portion is in interference fit with the second cylindrical portion; and the thermal expansion coefficient of the second cylindrical portion is greater than the thermal expansion coefficient of the first cylindrical portion. The connection column for reducing temperature rise at an electrician busbar lap joint part has the advantages that 1) the same lap joint length can generate larger conductive area, so that the current density can be reduced and the low temperature rise of the busbar can be realized; 2) the use level of the busbar is reduced so that the resource is saved; 3) the electric clearance or the phase spacing can be enlarged, so that the electrical safety of equipment is improved; and 4) the wiring width of the busbar is reduced, so that the occupied space of the busbar can be reduced.

Description

technical field [0001] The invention relates to the field of power equipment, in particular to a connecting column of a power busbar. Background technique [0002] In the field of power distribution, the connection of two power busbars is usually overlapped and then fastened with bolts. Such as figure 1 In the upper half of the busbar, this connection method needs to overlap the two busbars by a certain length, so that the current density of the contact surface can be maintained within a certain range, so that the temperature rise at the connection can meet the relevant standards. In order to reduce the temperature rise of power equipment, it is usually necessary to increase the overlapping length of the busbars to increase the contact area, thereby reducing the current density of the contact surface, and finally making the equipment have a lower temperature rise. Increasing the overlapping length will increase the amount of busbars used, thereby increasing the manufacturi...

Claims

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Application Information

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IPC IPC(8): H01R11/09H01B5/02H01B1/02
CPCH02G5/002H02G5/007H01R11/09H01B1/02H01B1/023H01B1/026H01B5/02
Inventor 不公告发明人
Owner 龚柱
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