CN102136684A - Radial compensation bus bar used for high-voltage switch - Google Patents

Abstract

A radial compensation busbar for high-voltage switches in the technical field of high-voltage electrical appliances, including: three groups of conductive components with the same structure, connectors and two pot insulators connected to them, two bellows and shells, the first The basin-type insulator and the first corrugated pipe and the second basin-type insulator and the second corrugated pipe are respectively fixedly arranged at both ends of the casing, and the two ends of the first conductive component, the second conductive component and the third conductive component are respectively connected to the The first basin-type insulator and the second basin-type insulator at both ends of the body are fixedly connected, and the conductive component is hermetically arranged inside the casing. The invention meets the requirements of compensating the axial and radial deformation in the GIS gas-insulated metal-enclosed switch and adjusting the installation error, as well as compensating the thermal expansion and contraction deformation of the busbar itself, and has a large amount of compensation for the radial deformation and can Keep appliances in good condition.

Description

Radial Compensation Bus for High Voltage Switchgear

technical field

The invention relates to a device in the technical field of high-voltage electrical appliances, in particular to a radial compensation bus for a high-voltage switch.

Background technique

As a component for collecting, distributing and transmitting electric energy, the busbar is an indispensable part of high-voltage electrical products, and most of the busbars used in high-voltage electrical appliances cannot bear the stress of radial deformation, but when the high-voltage electrical products are connected Or due to the settlement of the foundation and other reasons, there is an inevitable height difference, so the radial compensation bus comes into being.

After searching the prior art, it is found that the Chinese Patent Document No. CN2610476 has recorded a "busbar structure of a power conversion isolating switch", which includes a load busbar (1), a backup power supply busbar (2), a main power supply busbar (4) ), moving contact (3) (7), static contact (5), it is characterized in that adopting moving contact (3), (7) to be connected on the backup power bus (2) and the power bus (4) respectively, The static contact is fixed on the load busbar (1). In this technology, the shell is connected with a bellows to play the role of axial compensation. Such a structure can meet the connection requirements in general cases, but it cannot be adjusted when there is radial deformation on both sides of the busbar, resulting in system failure. problem appear. Moreover, its own thermal deformation will also cause the foundations on both sides to bear relatively large forces.

Contents of the invention

The present invention aims at the above-mentioned deficiencies in the prior art, and provides a radial compensation busbar for high-voltage switches, which satisfies the compensation for axial and radial deformation in GIS gas-insulated metal-enclosed switches and adjusts installation errors and can The thermal expansion and cold contraction deformation of the bus bar itself is compensated, and the compensation amount for the radial deformation is large and can maintain good electrical performance.

The present invention is achieved through the following technical solutions. The present invention includes: three groups of conductive components with the same structure, a connector and two pot insulators connected thereto, two corrugated pipes and a housing, wherein: the first pot insulator The two ends of the first conductive component, the second conductive component and the third conductive component are respectively connected with the The first basin-type insulator is fixedly connected to the second basin-type insulator, and the conductive component is sealed inside the casing.

The end of the connecting piece is provided with a spherical washer and a conical washer;

The conductive assembly includes: contacts, short conductors and long conductors, wherein: one end of the long conductor is connected in series with the short conductor, the other end of the long conductor is plugged in with the contact, and the other end of the contact and the short conductor are respectively fixed Set on the first pot insulator and the second pot insulator.

The contact is provided with a conductor block, and there is a shielding cover outside the conductor block, and a plurality of plum blossom contact fingers are evenly distributed in the shield shield, and the contact is plugged and connected with the long conductor through the plum blossom contact fingers.

The center of the conductor block is provided with a guide bolt for insertion.

In the present invention, the basin-type insulator, the corrugated pipe, and the shell are sealed and connected by bolts, and the whole body absorbs thermal expansion and contraction deformation, and limits the axial deformation of the entire busbar. Using multiple bellows can increase the amount of compensation for radial deformation at both ends of the busbar connection. The contact adopts the plum blossom contact, which has a large amount of jump, which can not cause great stress to the conductor when the radial deformation of the busbar occurs, protects the conductor, and can meet the adjustment of the internal conductor when the axial deformation occurs .

Description of drawings

Fig. 1 is a schematic diagram of the present invention;

Among them: (a) is the main view, (b) is the side view, and (c) is the schematic diagram of the plum blossom contact.

Detailed ways

The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

As shown in Figure 1, this embodiment includes: a first pot insulator 1, a second pot insulator 4, a first bellows 2, a second bellows 5, a shell 3, a spherical washer 6, a conical washer 7, The first conductive component 8, the second conductive component 9 and the third conductive component 10, wherein: the first pot insulator 1, the first bellows 2, the housing 3, the second pot insulator 4, and the second corrugated tube 5 pass through Bolt fixed connection, the two ends of the first conductive component 8, the second conductive component 9 and the third conductive component 10 are respectively connected with the first pot insulator 1 and the second pot insulator 4 by bolts, the first to The third conductive components 8, 9, 10 are sealed and installed inside the housing 3, and the first and second bellows 2, 5 are respectively connected to the housing 3 and the pot insulator 4 through bolts. The pot insulator, the bellows It is connected with the housing and the connector 14.

The end of the connecting piece 14 is provided with a spherical washer 6 and a conical washer 7, that is, a spherical disc and a conical seat, which play a supporting and buffering role, absorb part of the radial deformation, and reduce the impact on the flange of the shell. The pressure on the outside connects the whole structure as a whole, so that the whole can absorb its own thermal expansion and contraction.

Since the three groups of conductive components 8, 9, and 10 have the same structure, the first conductive component 10 is taken as an example below. The first conductive component 10 includes: a contact 11, a short conductor 12 and a long conductor 13, wherein: one end of the long conductor 13 It is connected in series with the short conductor 12 , the other end of the long conductor 13 is plugged and connected with the contact 11 , and the other end of the contact 11 and the short conductor 12 are fixedly arranged on the first pot insulator 1 and the second pot insulator 4 respectively.

As shown in Fig. 1 (c), described contact 11 is provided with conductor block 15, and the outer side of this conductor block 15 has shielding case 18, and in the shielding case 18, evenly distributes some plum blossom contact fingers 16, and the center of conductor block 15 A guide bolt 17 for plugging is provided, and the contact 11 is connected to the long conductor 13 through a plum contact finger 16 . When the jumping amount of the contact is large, it can reduce the deformation stress of the inner conductor when a large radial deformation occurs, and protect the conductor.

Claims (6)

1. radial compensation bus that is used for high-voltage switch gear, comprise: the conductive component of three groups of same structures, connector and two coupled disc insulators, two bellowss and housing, it is characterized in that: first disc insulator and first bellows and second disc insulator and second bellows are fixedly set in the two ends of housing respectively, first conductive component, fixedly connected with second disc insulator with first disc insulator that is positioned at the housing two ends respectively in the two ends of second conductive component and the 3rd conductive component, described conductive component sealing is arranged at enclosure interior.

2. the radial compensation bus that is used for high-voltage switch gear according to claim 1 is characterized in that the end of described connector is provided with spheric washer and taper faced washer.

3. the radial compensation bus that is used for high-voltage switch gear according to claim 1, it is characterized in that, described conductive component comprises: contact, short conductors and long conductor, wherein: an end and the short conductors of long conductor are connected in series, the other end of long conductor and contact socket connection, the other end of contact and short conductors are fixedly set in respectively on first disc insulator and second disc insulator.

4. the radial compensation bus that is used for high-voltage switch gear according to claim 3 is characterized in that described contact is provided with conductor block.

5. the radial compensation bus that is used for high-voltage switch gear according to claim 4 is characterized in that, there is radome in the described conductor block outside, uniform some plum blossom fingertips in the radome, and described contact is by plum blossom fingertip and long conductor socket connection.

6. according to claim 4 or the 5 described radial compensation buses that are used for high-voltage switch gear, it is characterized in that the center of described conductor block is provided with the guide blot that is used to peg graft.