CN201054472Y

CN201054472Y - Electrical connection device for gas insulation metal closed switch device

Info

Publication number: CN201054472Y
Application number: CNU200720090154XU
Authority: CN
Inventors: 刘伸展; 李健
Original assignee: Henan Pinggao Electric Co Ltd
Current assignee: Henan Pinggao Electric Co Ltd
Priority date: 2007-04-24
Filing date: 2007-04-24
Publication date: 2008-04-30
Anticipated expiration: 2017-04-24

Abstract

The utility model relates to an electric connection device of a gas-insulated metal-enclosed switchgear, which comprises a contact finger seat and a conducting rod with a joint inserted into the inner hole of the contact finger seat. During electric connection, the inner hole wall of the contact finger seat is provide with a plurality of ring-shaped grooves, and the inside of the ring-shaped grooves are respectively provided with a spring contact finger, and the compression of spring contact finger is 15 percent to 35 percent. The external wall of the conducting rod is reliably contacted with the communicated contact finger seat through the spring contact spring. The device can be provided with the ring-shaped grooves of different quantity according to the discharge current capability under different voltage classes, and the device is very convenient to be used and manufactured. Moreover, electric connection pieces of the spring contact finger has low lost and simple structure, and the fit clearance requirement is common, and both manufacturing and assembling can be easily realized, thereby leading the structure of the electric connection pieces to realize optimization.

Description

The arrangements of electric connection of Cubicle Gas-Insulated Switchgear

Technical field:

The utility model belongs to the arrangements of electric connection on the high voltage switchgear, relates in particular to the arrangements of electric connection in 72.5kV and the above SF6 Cubicle Gas-Insulated Switchgear (GIS).

Background technology:

The device that is electrically connected is the vitals on the SF6 Cubicle Gas-Insulated Switchgear (GIS), effect in major loop is conducting rated current and short trouble electric current, so its electric property and mechanical performance are all had very high requirement, the quality of electrical connector quality directly has influence on the reliability of GIS and the safe operation of electrical network; The in the past versions that adopt plum blossom fingertip or watchband fingertip of the parts that are electrically connected in the 72.5kV of domestic production and the above Cubicle Gas-Insulated Switchgear (GIS) more, but, parts on the plum blossom fingertip electrical connector are various, complex structure, cost height not only, and because contact point is few with to contact reason through-current capability such as less stable not high yet; Though the electrical connector cost of watchband fingertip is lower than plum blossom fingertip electrical connector, high because its fit clearance requires, actual assembling butt joint is difficult to construction.

Summary of the invention:

The purpose of this utility model is: provide a kind of simple in structure, through-current capability is high, and the arrangements of electric connection of using on the SF6 Cubicle Gas-Insulated Switchgear (GIS) of low cost of manufacture.

The purpose of this utility model is achieved through the following technical solutions: the arrangements of electric connection of this Cubicle Gas-Insulated Switchgear, comprise that fingertip seat and joint insert the conducting rod in the fingertip seat endoporus, it is characterized in that: in the electrical connection, the inner hole wall of fingertip seat is provided with a plurality of annular grooves, spring touch finger is housed in the annular groove, the decrement of spring touch finger is 15%-35%, and the outer wall of conducting rod joint reliably contacts with the fingertip seat of electrical connection by spring touch finger.

Described annular groove bottom shape is the v type.

The width of described groove the widest part is 10mm～15mm, and the bottom portion of groove angle is 120 °～150 °, and the decrement of spring touch finger is 20%-30%.

Two inwalls that intersect with v type both sides, bottom in the described groove are all perpendicular with the axis of electrical connector, and the width between two inwalls is 11.5-12.5mm, and groove (4) bottom angle is 130-140 °.

The outer wall of conducting rod joint is 0.5-1.5mm with the gap that is electrically connected fingertip seat endoporus.

Owing on fingertip seat inner hole wall, be provided with annular groove, the spring touch finger in the groove, the thrust conduction that relies on the compression spring to produce, after tested, the through-current capability of the every coil spring in the utility model can reach 11A, so, can be according to set annular groove quantity, can satisfy the through-current capability under the different electric pressures, as the spring in the groove 100 circles are arranged, can realize through-flow 1100A, two grooves just can satisfy the requirement of 2200A, and the like, very convenient.And adopted the electrical connector of spring touch finger, and not only cost is minimum, and structure is the simplest, and fit clearance requires generally, and processing and all very light realization of assembling really make the electrical connector structure realize optimization.

Description of drawings:

Fig. 1 is the cutaway view of a kind of version of the present utility model;

Fig. 2 is the cutaway view of second kind of version of the utility model;

Fig. 3 is the cutaway view of the third version of the utility model;

Fig. 4 is the partial enlarged drawing at A place among Fig. 1 or Fig. 2 or Fig. 3.

Embodiment:

The arrangements of electric connection of this Cubicle Gas-Insulated Switchgear, comprise fingertip seat and conducting rod, the inner hole wall of fingertip seat 1 is provided with a plurality of annular grooves 4, the bottom shape of annular groove 4 is " v " type, " v " type both sides formed bottom angle H is 120 °～150 °, be preferably 130-140 °, two inwalls that intersect with type both sides, bottom " v " in the groove 4 are all perpendicular with the central axis of fingertip seat 1, width W between two inwalls is 11.5-12.5mm, (bottom of groove 4 " v " type also can become a plane, so that processing).The depth D of groove generally adopts 3.5-4.5mm, but should determine the degree of depth of groove according to the decrement of the concrete shape of groove 4 and Qi Nei institute shock mount fingertip 2.

The cross section of groove 4 also can be exactly " v " type, the width of its widest part is 10mm～15mm, preferably there is certain roughness on the surface of groove, its roughness Ra is that 3.2 μ m are easier, spring touch finger 2 is housed in the annular groove 4, the joint 3a of conducting rod 3 inserts in the endoporus of fingertip seat 1, gap between the fingertip seat endoporus of the outer wall of conducting rod joint 3a and arrangements of electric connection is 0.5-1.5mm, and need to guarantee that the decrement of institute's shock mount fingertip 2 in the groove 4 is 15%-35%, preferably the decrement of spring touch finger is 20%-30%, so that the outer wall of the joint 3a of conducting rod 3 can reliably contact with the fingertip seat of arrangements of electric connection by spring touch finger.

The quantity that annular groove 4 is set can require decide according to the through-current capability under the different electric pressures.

The shape of arrangements of electric connection should be made different shapes as required, the fit system of it and conducting rod joint 3a also should be decided according to purposes, for example can be provided with one on the central axis of fingertip seat 1 endoporus is used to lead and the screw 5 of supporting role, to guarantee that conducting rod 3 docks (shown in the structure among Fig. 1) reliably with electrical connection 1.Its interior conducting rod 3 of the endoporus of the fingertip seat 1 of arrangements of electric connection and insertion also can adopt and be slidingly matched, for example be applied in the isolation switch device, conducting rod joint 3a can be slided along the longitudinal center line of fingertip seat 1 endoporus, (shown in the structure among Fig. 2), thus realize the isolating switch divide-shut brake.The shape of the fingertip seat 1 of arrangements of electric connection and with the assembling form of conducting rod joint 3a also can be as shown in Figure 3 so that in use achieve a butt joint installation.

Claims

1. the arrangements of electric connection of Cubicle Gas-Insulated Switchgear, comprise that fingertip seat and joint insert the conducting rod in the fingertip seat endoporus, it is characterized in that: in the electrical connection, the inner hole wall of fingertip seat is provided with a plurality of annular grooves, spring touch finger is housed in the annular groove, the decrement of spring touch finger is 15%-35%, and the outer wall of conducting rod joint reliably contacts with the fingertip seat of electrical connection by spring touch finger.

2. the arrangements of electric connection of Cubicle Gas-Insulated Switchgear according to claim 1, it is characterized in that: described annular groove bottom shape is the v type.

3. the arrangements of electric connection of Cubicle Gas-Insulated Switchgear according to claim 2, it is characterized in that: the width of described groove the widest part is 10mm～15mm, and the bottom portion of groove angle is 120 °～150 °, and the decrement of spring touch finger is 20%-30%.

4. the arrangements of electric connection of Cubicle Gas-Insulated Switchgear according to claim 3, it is characterized in that: two inwalls that intersect with v type both sides, bottom in the described groove are all perpendicular with the axis of electrical connector, width between two inwalls is 11.5-12.5mm, and groove (4) bottom angle is 130-140 °.

5. the arrangements of electric connection of Cubicle Gas-Insulated Switchgear according to claim 4, it is characterized in that: the outer wall of conducting rod joint is 0.5-1.5mm with the gap that is electrically connected fingertip seat endoporus.