CN204793226U

CN204793226U - Grafting tubular busbar

Info

Publication number: CN204793226U
Application number: CN201520535566.4U
Authority: CN
Inventors: 孙亮; 施玲
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-07-22
Filing date: 2015-07-22
Publication date: 2015-11-18
Anticipated expiration: 2025-07-22

Abstract

The utility model discloses a grafting tubular busbar, including the tubular busbar main part of two mutual grafting, a tubular busbar main part tip has an intubate, the 2nd tubular busbar main part tip is inserted to the intubate, the external diameter of intubate equals the 2nd tubular busbar's internal diameter, the pipe wall system that the 2nd tubular busbar pegged graft the end has the interval of at least round circumference distribution sunken, the sunken embedding in interval the outer wall of intubate. The stress tube of tight fit with it is equipped with in the intubate. The sunken cross section in the 2nd tubular busbar main part tip interval appears for the gear. Adopt this kind of structure, mechanical strength is high, the appearance is level and smooth, easily does insulating the processing.

Description

A kind of grafting tube type bus

Technical field

The utility model relates to a kind of grafting tube type bus, for transmission of electricity, belongs to power technology and apparatus field.

Background technology

Tube type bus is a kind of power transmitting device of efficient conveying high-pressure electric current, tube type bus is compared with traditional rectangular bus bar, there are some advantages, such as unit section ampacity is large, kelvin effect good, radiating condition is good, allowable stress is large, span is large, mechanical strength is high, electrical insulation properties is strong, main insulation stability of material is high, insulating process is reasonable.Along with the growth steady fast of national economy, social power consumption linearly rises, and transforming plant main transformer capacity is constantly strengthened, and the rated current of main transformer low-pressure line-outgoing side also increases thereupon, and power department more and more uses tube type bus.

Existing tube type bus transition joint has following several mode: one, hood type joint, as shown in Figure 3, Figure 4, it adopts the copper sheathing 5 with axially open to be enclosed within two tube type bus main body 1 joints, anchor ears 6 and is enclosed within opening copper sheathing 5, is fastened by bolts, reaches the object of permanent joint, but this type of joint surface has projection, easy generation point discharge, and when pipe mother runs, bolt easily loosens, and can cause herein that contact resistance is large; Two, welded fitting is welded by two conductors, makes it fuse into one, although good looking appearance, the conductance of weld declines, and can there is the hidden danger such as heating after energising.In addition, it is complete at the scene that tube type bus connects, and site environment is complicated, and welding can increase difficulty to on-site installation work.

Utility model content

The purpose of this utility model is: for the problems referred to above, provides the grafting tube type bus that a kind of mechanical strength is high, profile is smooth.

In order to reach above object, the technical solution of the utility model is as follows: a kind of docking tube type bus, comprise the tube type bus main body of two mutual grafting, it is characterized in that: the first tube type bus body end has intubate, described intubate inserts the second tube type bus body end, and the external diameter of described intubate equals the internal diameter of described second tube type bus; The tube wall of described second tube type bus end is shaped with the spaced depressions of at least one circle circumference distribution, and described spaced depressions embeds the outer wall of described intubate.Under the positioning action of circumferential spaced depressions, two tube type bus main body closely staggered occlusions, define constraint in axis and circumference therebetween, mutually reliable fixing, and interconnect structure makes profile carefully and neatly done.In addition, because inside and outside material forms the relation of inlaying mutually, contact area is large, and therefore contact resistance significantly reduces.

It is that friction tight stress tube is with it housed in described intubate that the utility model further improves.The length of described stress tube is greater than the length of described intubate, and intubate can be made like this to bear larger radial pressure.

Further, the cross section of described second tube type bus main body inserted terminal spaced depressions is gear shape.

Accompanying drawing explanation

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail, wherein:

Fig. 1 is the structural representation of the utility model embodiment one;

Fig. 2 is the utility model embodiment one cross-sectional view;

Fig. 3 is the tube type bus hood type joint design schematic diagram of prior art;

Fig. 4 is the tube type bus hood type joint cross-sectional view of prior art.

In figure: 1-tube type bus main body, 11-first tube type bus main body, 12-second tube type bus main body, 2-intubate, 3-stress tube, 4-spaced depressions, 5-copper sheathing, 6-anchor ear.

Embodiment

In order to understand the utility model better, below in conjunction with accompanying drawing, a kind of embodiment of the present utility model is described in detail.

Embodiment one

As depicted in figs. 1 and 2, grafting tube type bus comprises the first tube type bus main body 11, second tube type bus main body 12.Intubate 2 is extended in first tube type bus main body 11 end, and the external diameter of intubate 2 equals the internal diameter of the second tube type bus 12.Intubate 2 inserts the second tube type bus main body 12 end.The tube wall of the second tube type bus inserted terminal is shaped with the spaced depressions 4 of seven circle circumference distributions, and spaced depressions 4 embeds the outer wall of intubate 2.Friction tight stress tube 3 is with it housed in intubate 2.The length of stress tube 3 is greater than the length of intubate 2.The cross section of the second tube type bus main body 12 end part interval depression is gear shape.

During assembling, utilize large tonnage pressing machine to extrude the end of tightening up the first tube type bus main body 11, make its reduced diameter form intubate 2, intubate 2 inserts the second tube type bus main body 12 inserted terminal.Then enclosing spaced depressions with large tonnage pressing machine in the second tube type bus main body 12 end compacting seven, two tube type bus main bodys are combined closely.Like this, under the positioning action of circumferential spaced depressions 4, the tube type bus main body 1 of two docking defines each other and axially retrains with circumference, mutually reliable fixing, and interconnect structure makes profile carefully and neatly done.In addition, because inside and outside material forms the relation of inlaying mutually, therefore contact resistance significantly reduces, and is conducive to the conveying of electric current.

In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection range of the utility model requirement.

Claims

1. a grafting tube type bus, comprise the tube type bus main body of two mutual grafting, it is characterized in that: the first tube type bus main body (11) end has intubate (2), described intubate (2) inserts the second tube type bus main body (12) end, and the external diameter of described intubate (2) equals the internal diameter of described second tube type bus (12); The tube wall of described second tube type bus (12) end is shaped with the spaced depressions (4) of at least one circle circumference distribution, and described spaced depressions (4) embeds the outer wall of described intubate (2).

2. a kind of grafting tube type bus according to claim 1, is characterized in that: friction tight stress tube (3) is with it housed in described intubate (2).

3. a kind of grafting tube type bus according to claim 2, is characterized in that: the length of described stress tube (3) is greater than the length of described intubate (2).

4. a kind of grafting tube type bus according to claim 1, is characterized in that: the cross section of described second tube type bus main body (12) end part interval depression is gear shape.