CN101478083A - Finger-contact type tubular bus connector - Google Patents

Abstract

The invention belongs to power transmission equipment, and relates to a tubular busbar connector used for connecting tubular busbars in the power transmission equipment. The contact-finger tubular busbar connector includes an interpolated intermediate conductor with a cylindrical outer wall. The outer cylindrical surface of the section can be movably matched with the inner hole of the tubular bus bar. At least one annular outer ring groove is opened on the outer wall of each connecting section, and elastic contact fingers are arranged in the outer ring groove. The elastic contact fingers are End-to-end closed ring coil spring shape. The invention has the advantages of simple structure, convenient use, smooth shape of the connecting part, uniform magnetic field, and can automatically adapt to the change of the length of the busbar.

Description

Contact finger tubular busbar connector

technical field

The invention belongs to power transmission equipment, and relates to a tubular busbar connector used for connecting tubular busbars in the power transmission equipment.

Background technique

In power transmission equipment using tubular busbars, the hoop-type connection is usually used for the conductive connection between two sections of tubular busbars. Although this connection has the advantage of reliable connection, there are bolted parts, which are not only inconvenient for installation , and make the electromagnetic field of the connecting part relatively uneven, the insulation treatment is relatively difficult, and the shielding effect is poor, which will cause the nearby steel components to heat up, and there are also certain hidden dangers of insulation safety, which is not conducive to the safe operation of nearby supporting electrical equipment. At the same time, the traditional The connector has a poor adjustment effect on the thermal expansion and contraction of the busbar, which is not conducive to the operation of the busbar in a place with a large temperature difference between day and night, and affects the service life of the busbar.

Contents of the invention

The technical problem to be solved by the present invention is to provide a contact-finger tubular busbar connector with simple structure, convenient use, smooth appearance of the connecting part, uniform magnetic field, and automatic adaptation to the change of busbar length.

A technical solution of the present invention is: the contact finger type tubular busbar connector includes an inserted intermediate conductor with a cylindrical outer wall, and the front and rear sections of the inserted intermediate conductor are used to connect with the two tubular busbar connectors respectively. The connecting section of the busbar connection, the outer cylindrical surface of the two connecting sections can be movably matched with the inner hole of the tubular busbar, and at least one annular outer ring groove is opened on the outer wall of each connecting section, and elastic The contact finger is in the shape of an annular helical spring with its head and tail closed. The outer wall of the interpolated intermediate conductor between the two connecting sections is provided with an outer limiting protrusion protruding from the outer cylindrical surface, which is used to limit the installation position of the two tubular busbars.

Another technical scheme of the present invention is: the contact finger type tubular busbar connector includes a jacket-type intermediate conductor with a cylindrical inner hole, and the front and rear sections of the jacket-type intermediate conductor inner hole are used to connect with the two sections respectively. For the connecting section connected by the tubular busbar, the inner holes of the two connecting sections are in dynamic fit with the outer cylindrical surface of the tubular busbar. At least one annular inner ring groove is opened on the inner wall of each connecting section, and there are installed in the inner ring groove. The elastic contact finger is in the shape of an annular helical spring with its head and tail closed. An inner limit protrusion protruding from the inner cylindrical surface is provided on the inner wall of the inner sleeve type intermediate conductor between the two connecting sections, and is used to limit the installation position of the two tubular busbars.

The invention adopts a cylindrical or tubular intermediate conductor, and realizes the conductive connection between the intermediate conductor and the tubular busbar through the annular elastic contact fingers. In use, the axial position of the tubular busbar can be changed freely within a certain range, which not only reduces the difficulty of installation and coordination, but also compensates for the thermal expansion and contraction of the busbar during use, which is conducive to improving its service life.

Description of drawings

Fig. 1 is a structural representation of an embodiment of the present invention;

Fig. 2 is a structural representation of another embodiment of the present invention;

Fig. 3 is an enlarged structural schematic diagram of the shape of the elastic contact finger of the present invention;

FIG. 4 is a cross-sectional structure diagram of A in FIG. 3 .

Detailed ways

In the embodiment shown in Fig. 1, the two connecting sections of the interpolating intermediate conductor 1 are dynamically matched with the inner holes of the two tubular busbars 4 through the outer cylindrical surface, and the outer cylindrical surface of the connecting section of the interpolating intermediate conductor 1 An outer ring groove 11 is opened on the top, and elastic contact fingers 3 are arranged in the outer ring groove. As shown in FIG. 3 and FIG. 4 , the elastic contact finger 3 is in the shape of a ring-shaped coil spring with its head and tail closed. When the connecting section of the inserted intermediate conductor 1 is inserted into the inner hole of the tubular busbar, the inner wall of the tubular busbar 4 and the outer wall of the inserted intermediate connecting conductor 1 jointly extrude the elastic contact fingers 3 to realize the connection between the tubular busbar and the intermediate connecting conductor Conductive connection. The axial position of the tubular bus bar is limited by the outer limit protrusion 12 in the middle of the inserted intermediate conductor.

In the embodiment shown in Fig. 2, the two connecting sections of the jacket-type intermediate conductor 2 are dynamically matched with the outer cylindrical surface of the tubular busbar 4 through the inner hole, and the inner wall of the connecting section of the jacket-type intermediate conductor 2 is provided with an inner ring groove 21 , elastic contact fingers 3 are arranged in the inner ring groove. When the tubular busbar 4 is inserted into the inner hole of the jacket-type intermediate conductor, the outer wall of the tubular busbar 4 and the outer wall of the jacket-type intermediate connecting conductor 2 jointly squeeze the elastic contact fingers 3 to realize the conductive connection between the tubular busbar and the intermediate connecting conductor. The axial position of the tubular bus bar is limited by the inner limit protrusion 22 in the middle of the jacket-type intermediate conductor.

Claims (4)

1, a kind of finger-contact type tubular bus connector, it is characterized in that: it includes an interpolation type middle conductor (1) with cylindrical outer wall, the front and back of interpolation type middle conductor are for two sections to be used for the linkage section that is connected with two sections tubular bus respectively, have at least one annular outer groove (11) on the outer wall of each linkage section, be mounted with elasticity fingertip (3) in outer groove, described elasticity fingertip is the coil spring shape of the annular of head and the tail sealing.

2, finger-contact type tubular bus connector according to claim 1 is characterized in that: the interpolation type middle conductor outer wall between described two sections linkage sections is provided with the outer restriction protrusion (12) that protrudes in external cylindrical surface.

3, a kind of finger-contact type tubular bus connector, it is characterized in that: it includes a jacket-type middle conductor (2) with cylindrical bore, the front and back of jacket-type middle conductor endoporus are for two sections to be used for the linkage section that is connected with two sections tubular bus respectively, have at least one annular inner groove (21) on the inwall of each linkage section, be mounted with elasticity fingertip (3) in inner groove, described elasticity fingertip is the coil spring shape of the annular of head and the tail sealing.

4, finger-contact type tubular bus connector according to claim 3 is characterized in that: the inner cased type middle conductor inwall between described two sections linkage sections is provided with the interior restriction protrusion (22) that protrudes in inner cylinder face.

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