CN201294151Y

CN201294151Y - Separable/closed transformer direct connection device for GIS

Info

Publication number: CN201294151Y
Application number: CNU2008201499962U
Authority: CN
Inventors: 曹云龙
Original assignee: Henan Pinggao Electric Co Ltd
Current assignee: Henan Pinggao Electric Co Ltd
Priority date: 2008-10-27
Filing date: 2008-10-27
Publication date: 2009-08-19
Anticipated expiration: 2018-10-27

Abstract

The utility model discloses a separate type transformer direct connecting device, which comprises a conducting bar, wherein the conducting bar is assembled on a tubular conductive casing through a gear and a rack bar driving mechanism in a sliding way, one end of the conducting bar is movably and electrically connected with a static contact on the top portion of a transformer casing, and the other end thereof is electrically connected with a G I S switch device through a conductive casing. With the structure, the conducting bar is not needed to be detached when the voltage durance test or maintenance for the G I S switch device are prepared to conduct in fields. The separate type transformer direct connecting device can be used in transformer direct connecting devices with different voltages and current grades, and has the advantages of simple structure, convenient operation, high safety and reliability and suitable wide popularization.

Description

The GIS direct-connected device of separable-closed type transformer

Technical field

The utility model relates to a kind of high-tension power transmission and transformation equipment, the definite direct-connected device of a kind of separable-closed type transformer of saying so.

Background technology

Transformer is direct-connected as the connected mode of a kind of Cubicle Gas-Insulated Switchgear (GIS) with transformer, domestic and external a lot of producers adopt static ways of connecting mostly, need dismantle the conducting rod that connects major loop during for on-the-spot withstand voltage test or maintenance GIS equipment, because this device is installed in the upside of bushing shell for transformer, and the housing inner chamber of this device is very little, causes very difficulty of dismounting conducting rod.

The utility model content

The purpose of this utility model is: provide a kind of transformer jockey that can deciliter contact structures, to solve above-mentioned difficulties.

The technical solution of the utility model is: the direct-connected device of a kind of separable-closed type transformer, comprise conducting rod, described conducting rod is slidedly assemblied in the conductive casings of a tubulose by a gear, rack gear, the one end can be connected with the fixed contact flexible lamp that is arranged on the bushing shell for transformer top, and the other end is electrically connected with the GIS switchgear by conductive casings.

Described gear is located on the middle part tube wall of described conductive casings, and its gear shaft is provided with ratchet spanner, and described tooth bar is fixed on the end that conducting rod stretches into conductive casings.

Described conducting rod is the tubular body of an end opening, its openend is towards bushing shell for transformer one side, described fixed contact is provided with a boss, the mouth of pipe inwall of this boss and conducting rod is slidingly matched, be provided with plum blossom fingertip electric connection structure with the conductive casings oral area on described boss, this plum blossom fingertip electric connection structure is equipped with radome outward.

The top of described bushing shell for transformer is provided with a fixed contact that has a groove, and this groove inwall and conducting rod are slidingly matched, and described conductive casings and groove inwall are provided with the helical spring electric connection structure.

This device also is provided with metal shell, and an end of this metal shell connects the GIS switchgear, and the other end is fixed on the bushing shell for transformer by flange, and this flange connections is provided with insulating disc, insulation cushion, heat-shrink tube and voltage limiter.

Also be provided with the fixedly gag lever post of conducting rod position on the tube wall of described conductive casings.

Adopt said structure, prepare at the scene GIS equipment is carried out withstand voltage test or when maintenance, need not remove conducting rod, only need the rotation ratchet spanner, by rack and pinion drive mechanism conducting rod is thrown off and being electrically connected of bushing shell for transformer, make it be in off-state and get final product; Boss or groove are set on bushing shell for transformer can prevent that conducting rod from radially wobbling, can make conducting rod more firm, strengthen its security reliability with being connected of bushing shell for transformer; In that being set on the conductive casings, gag lever post can prevent that it from the conducting rod axial endplay taking place under running status; Increase insulating disc in the junction of its metal shell and bushing shell for transformer flange and be provided with insulation cushion, heat-shrink tube and voltage limiter and with the induced voltage that prevents to produce on the GIS cylindrical shell transformer is caused to damage or personnel's safety produced and threaten; The utility model can use in the direct-connected device of the transformer of different voltages and current class, and it is simple in structure, and is easy to operate, and the security reliability height is suitable for promoting on a large scale.

Description of drawings

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

Fig. 2 is the A-A cutaway view of the utility model embodiment one;

Fig. 3 is the structural representation of the utility model embodiment two.

Embodiment

Embodiment one: as shown in Figure 1 and Figure 2, on bushing shell for transformer 1, be installed with a metal shell 2 by flange, metal shell 2 is provided with insulating disc 9 with bushing shell for transformer 1 flange connecting junction, be used for standard component employing insulation cushion and heat-shrink tube that flange connects, and on standard component, be parallel with voltage limiter 10.Adjustment for ease of the installation site, be provided with one section bellows 8. in the junction of metal shell 2 close GIS and be provided with fixed contact 3 in the end of transformer outlet sleeve pipe 1, a side that connects GIS switchgear (GIS) on metal shell 2 is set with a conductive casings 12, this conductive casings 12 is the tubular body of an end opening, slidable fit has conducting rod 4 in the pipe of conductive casings 12, this conducting rod 4 is positioned on the end face of conductive casings 12 and is fixedly connected with a tooth bar 5, tooth bar 5 is slidingly matched with the inwall of conductive casings 12, be equipped with a gear 6 at the middle part of conductive casings 12, gear 6 and tooth bar 5 engagements, on the oral area of conductive casings 12 and fixed contact 3, be respectively arranged with plum blossom fingertip

electric connection structure

16,17, fixed contact 3 is provided with a boss 14, the inwall of the outer rim of boss 14 and conductive casings 12 coincide, to prevent that conducting rod 12 from radial-play taking place when working, at plum blossom fingertip

electric connection structure

16,17 outside also is respectively arranged with radome 13,15.Be installed with ratchet spanner on the power transmission shaft 11 of gear 6.For preventing to descend conducting rod 4 that axial endplay takes place in working order, on the tube wall of conductive casings 12, also be equipped with gag lever post 7.

In the time of need testing or overhaul, only need the rotation ratchet spanner, driven gear 6 rotations, by with the tooth bar 5 of gear 6 engagements, pulling conducting rod 4 disconnects and being electrically connected of fixed contact 3,

Embodiment two: present embodiment two is with the difference of embodiment one, offer the groove 20 that the outer rim with conducting rod 4 matches on the fixed contact 3, on groove 20 inwalls of the mouth of pipe inwall of conductive casings 12 and fixed contact 3, be respectively arranged with helical spring

electric connection structure

18,19, these helical spring

electric connection structure

18,19 outer radomes that do not add.

Claims

1, the direct-connected device of a kind of separable-closed type transformer, comprise conducting rod, it is characterized in that, described conducting rod is slidedly assemblied in the conductive casings of a tubulose by a gear, rack gear, the one end can be connected with the fixed contact flexible lamp that is arranged on the setting of bushing shell for transformer top, and the other end is electrically connected with the GIS switchgear by conductive casings.

2, the direct-connected device of separable-closed type transformer according to claim 1, it is characterized in that, described gear is located on the middle part tube wall of described conductive casings, and its gear shaft is provided with ratchet spanner, and described tooth bar is fixed on the end that conducting rod stretches into conductive casings.

3, the direct-connected device of separable-closed type transformer according to claim 1 and 2, it is characterized in that, described conducting rod is the tubular body of an end opening, its openend is towards bushing shell for transformer one side, described fixed contact is provided with a boss, the mouth of pipe inwall of this boss and conducting rod is slidingly matched, and is provided with plum blossom fingertip electric connection structure with the conductive casings oral area on described boss, and this plum blossom fingertip electric connection structure is equipped with radome outward.

4, the direct-connected device of separable-closed type transformer according to claim 1 and 2, it is characterized in that, the top of described bushing shell for transformer is provided with a fixed contact that has a groove, this groove inwall and conducting rod are slidingly matched, and described conductive casings and groove inwall are provided with the helical spring electric connection structure.

5, the direct-connected device of separable-closed type transformer according to claim 1, it is characterized in that, this device also is provided with metal shell, one end of this metal shell connects the GIS switchgear, the other end is fixed on the bushing shell for transformer by flange, and this flange connections is provided with insulating disc, insulation cushion, heat-shrink tube and voltage limiter.

6, the direct-connected device of separable-closed type transformer according to claim 1 is characterized in that, also is provided with the fixedly gag lever post of conducting rod position on the tube wall of described conductive casings.