An intermediate connection device for an insulated tubular busbar

CN224696997UActive Publication Date: 2026-08-28CHINA HUADIAN GROUP CO LTD SICHUAN BRANCH
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Patent Information

Application Number
CN202522097869.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-29
Publication Date
2026-08-28
Estimated Expiration
2035-09-29

AI Technical Summary

Technical Problem

[0003]现有技术中的中间导体连接处通常先采用黄铜焊接方式引出接线端子，再通过中间载流导体为扁平铜排方式连接，这种焊接方式引出的端子有二次过渡，焊接处就可能存在虚焊、假焊或有裂纹等缺陷

Benefits of technology

本实用新型通过在现有绝缘母线的载流导体两端通过内衬管插入载流导体内的方式进行连接实现中间导体，并配合表带触子、铜套、不锈钢管以及绝缘屏蔽层和等电位连接片的合理布局，使中间件与两侧绝缘母线的载流导体之间更加贴合，实现了更好的载流、过流能力，且具备良好的连接机械强度和动稳定性，降低了因接触不良导致的高温、绝缘故障的情况，并充分考虑了接口处的完全绝缘覆盖的同时，消除了电位差的漏电风险，此外其结构设计合理，安装维护便捷，对于绝缘管型母线的连接工程中起到了极大的贡献。

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Abstract

The utility model relates to cable accessory technical field, concretely is a kind of intermediate connecting device for insulating tube type bus, the inside of the current-carrying conductor to be connected place is provided with inner bushing pipe, the circumferential surface of inner bushing pipe is provided with watchband contact, the outside of the current-carrying conductor to be connected place is provided with copper sleeve and stainless steel sleeve, stainless steel sleeve is provided with equipotential bonding piece, the outside of insulating tube type bus is provided with insulating shielding cylinder, the surface of inner bushing pipe and located the junction of current-carrying conductor are provided with boss, the utility model is connected by the way that inner bushing pipe inserts into current-carrying conductor to realize intermediate conductor, and cooperate the reasonable layout of watchband contact, copper sleeve, stainless steel pipe and insulating shielding layer and equipotential bonding piece, make the current-carrying conductor between intermediate piece and two side insulating bus more conformable, realize better current-carrying, overcurrent capacity, and have good connection mechanical strength and dynamic stability, reduce the high temperature, insulating fault condition caused by poor contact.
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Claims

1. An intermediate connection device for an insulated tubular busbar, comprising an insulated tubular busbar one (1) having a current-carrying conductor one (6) disposed internally and an insulated tubular busbar two (2) having a current-carrying conductor two (7) disposed internally, characterized in that, An inner liner tube (3) is provided on the inner side of the connection point between the current-carrying conductor 1 (6) and the current-carrying conductor 2 (7). A watch strap contact (8) is provided on the circumferential surface of the inner liner tube (3). A copper sleeve (4) is provided on the outer side of the connection point between the current-carrying conductor 1 (6) and the current-carrying conductor 2 (7). A stainless steel sleeve (5) is provided on the outer side of the copper sleeve (4). An equipotential bonding piece (11) is provided on the stainless steel sleeve (5). An insulating shielding cylinder (12) is provided on the outer side of the insulating tubular busbar 1 (1) and the insulating tubular busbar 2 (2). A boss (9) is provided on the surface of the inner liner tube (3) at the intersection of the current-carrying conductor 1 (6) and the current-carrying conductor 2 (7).

2. The intermediate connection device for insulated tubular busbars according to claim 1, characterized in that, The stainless steel sleeve (5) has an opening (10) with a width of 4mm to 6mm along the axial direction.

3. The intermediate connection device for insulated tubular busbars according to claim 1, characterized in that, The outer diameter of the inner liner tube (3) matches the inner diameter of the current-carrying conductor one (6) and the current-carrying conductor two (7).

4. The intermediate connection device for insulated tubular busbars according to claim 1, characterized in that, The inner diameter of the copper sleeve (4) is the same as the outer diameter of the first current-carrying conductor (6) and the second current-carrying conductor (7); the outer diameter of the copper sleeve (4) is the same as the inner diameter of the stainless steel sleeve (5).

5. The intermediate connection device for insulated tubular busbars according to claim 4, characterized in that, The copper sleeve (4) is composed of multiple pieces spaced 2mm to 3mm apart.

6. The intermediate connection device for insulated tubular busbars according to claim 5, characterized in that, The stainless steel sleeve (5) is a non-magnetic stainless steel sleeve with a thickness of 3mm to 5mm.

7. The intermediate connection device for insulated tubular busbars according to claim 1, characterized in that, The outer diameter of the boss (9) is the same as the outer diameter of the first current-carrying conductor (6) and the second current-carrying conductor (7).

8. The intermediate connection device for insulated tubular busbars according to claim 1, characterized in that, An aluminum tube (13) is provided on the insulating shielding tube (12), and the aluminum tube (13) is in contact with the equipotential bonding piece (11).

9. The intermediate connection device for insulated tubular busbars according to claim 8, characterized in that, The length of the aluminum cylinder (13) covers the length of the copper sleeve (4) and the stainless steel sleeve (5) at the connection point of the current-carrying conductor one (6) and the current-carrying conductor two (7).

10. The intermediate connection device for insulated tubular busbars according to claim 1, characterized in that, The watch strap contacts (8) are multiple and are symmetrically distributed at both ends of the inner liner tube (3).