CN219202971U

CN219202971U - High-voltage contact of capacity-regulating switch of transformer

Info

Publication number: CN219202971U
Application number: CN202223594037.0U
Authority: CN
Inventors: 王金忠; 高仁忠; 王高兴
Original assignee: Nanjing Purui Electric Power Science And Technology Ltd
Current assignee: Nanjing Purui Electric Power Science And Technology Ltd
Priority date: 2022-12-30
Filing date: 2022-12-30
Publication date: 2023-06-16
Anticipated expiration: 2032-12-30

Abstract

The utility model relates to a transformer capacity-regulating switch high-voltage contact, it relates to transformer capacity-regulating switch part field, and it includes the mount pad, be equipped with terminal and first contact on the mount pad, first contact is used for supporting tightly with the second contact, be equipped with the fixed subassembly of fixed first contact on the mount pad and be equipped with the hold-down subassembly with the first contact and the horizontal tight of supporting of second contact. The application has that first contact and second contact transversely support tightly, helps avoiding the virtual joint that warp and lead to because of metal fatigue, improves the effect of the reliability of this device.

Description

High-voltage contact of capacity-regulating switch of transformer

Technical Field

The application relates to the field of capacity-regulating switch components of transformers, in particular to a high-voltage contact of a capacity-regulating switch of a transformer.

Background

In the running process of the transformer, the capacity of the transformer needs to be adjusted by switching the coils which are put into operation through the capacity-adjusting switch according to the actual condition of the power load.

In the related art, the high-voltage contact of the transformer capacity-regulating switch comprises an upper first contact blade and a lower first contact blade which are arranged on a first contact seat, wherein a compression spring is further arranged on the first contact blade, one end of the compression spring is fixed on the upper first contact blade or the lower first contact blade, and therefore after the second contact moves between the upper first contact blade and the lower first contact blade, the second contact is longitudinally compressed by the compression spring.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: after long-time use, the upper and lower metal contact pieces with smaller elastic coefficients are bent due to metal fatigue, and the pressure welding force between the upper and lower metal contact pieces is reduced, so that a virtual joint phenomenon is caused.

Disclosure of Invention

In order to solve the problem that the pressure contact force is reduced due to bending of the upper metal contact and the lower metal contact, the application provides a high-voltage contact of a transformer capacity-regulating switch.

The application provides a transformer capacity-regulating switch high-voltage contact adopts following technical scheme:

the utility model provides a transformer capacity-regulating switch high-voltage contact, includes the mount pad, be equipped with terminal and first contact on the mount pad, first contact is used for supporting tightly with the second contact, be equipped with the fixed subassembly of fixed first contact and be equipped with the hold-down subassembly that transversely supports tight with first contact and second contact on the mount pad.

Through adopting above-mentioned technical scheme, utilize fixed subassembly to fix the back on the mount pad with first contact, rotate the second contact and make first contact and second contact butt, then utilize compressing tightly the subassembly with first contact and second contact transversely compress tightly for first contact and second contact support tightly, thereby help avoiding metal fatigue and deformation to lead to virtual the connect, improve the reliability of this device.

In a specific implementation mode, the fixed component comprises a fixed block and a locking ring, the fixed block is arranged on the mounting seat, a mounting hole is formed in the fixed block, the first contact is located in the mounting hole, a threaded column is arranged on the side wall of the fixed block, a plurality of limiting grooves are formed in the peripheral wall of the threaded column, a plurality of limiting blocks are arranged on the first contact and correspond to the limiting grooves one by one, the limiting blocks are clamped in the limiting grooves, and the locking ring is in threaded connection with the threaded column and abuts against the side wall of the fixed block.

Through adopting above-mentioned technical scheme, first contact is placed in the mounting hole for the stopper chucking is in the spacing inslot, then with locking ring and threaded column threaded connection and locking, thereby fix first contact on the fixed block, help first contact to stabilize and support tightly with the second contact, prevent the dislocation.

In a specific implementation manner, the compressing assembly comprises a compressing spring, a sliding block is arranged on the side wall of the fixed block, a sliding groove is formed in the mounting seat, the compressing spring is located in the sliding groove, one end of the compressing spring is fixed on the sliding block, and the other end of the compressing spring is fixed on the groove wall of the sliding groove.

Through adopting above-mentioned technical scheme, rotate to with first contact butt back at the second contact, utilize spring force to promote first contact and second contact and support tightly to with vertical compacting change into transversely support tightly, avoided the virtual joint that the contact leads to because of metal fatigue deformation, help improving the reliability of this device.

In a specific embodiment, the first contact is provided with an upper contact piece and a lower contact piece, and the second contact is provided with a contact plate, and the contact plate is positioned between the upper contact piece and the lower contact piece and abuts against the side walls of the upper contact piece and the lower contact piece.

Through adopting above-mentioned technical scheme, rotate the second contact and make the contact plate rotate to go up between contact plate and the lower contact plate and support tightly, utilize the contact plate increase second contact and go up contact plate and the contact area of contact plate down, reduce the possibility that appears the virtual joint, help improving the reliability of this device.

In a specific embodiment, the contact plate, the upper contact plate and the lower contact plate are each provided with a chamfer.

Through adopting above-mentioned technical scheme, utilize the chamfer to play the guide effect to the removal of contact plate, the contact plate of being convenient for rotates between upper contact piece and the lower contact piece and support tightly.

In a specific embodiment, the contact plate, the upper contact plate and the lower contact plate are provided with graphite silver plating.

By adopting the technical scheme, the graphite silver plating layer is used for reducing the sliding friction force when the contact plate is contacted with the upper contact piece and the lower contact piece and is mutually abutted, and is also beneficial to enhancing the conductivity.

In a specific embodiment, the upper contact piece and the lower contact piece are provided with elastic pieces.

By adopting the technical scheme, the elastic piece is abutted against the contact plate, so that the situation of virtual connection is avoided, and the reliability of the high-voltage contact is improved.

In a specific embodiment, the second contact is provided with a dielectric knob.

By adopting the technical scheme, the insulating knob insulator is fixed on the second contact, so that the thermal deformation of the second contact is prevented, and the unstable connection between the first contact and the second contact caused by the thermal deformation of the second contact is avoided.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the second contact is longitudinally pressed in the first contact to be transversely pressed against the first contact, so that virtual connection caused by deformation of an upper contact piece and a lower contact piece on the first contact is avoided, and the reliability of the device is improved;

2. the first contact and the binding post are integrated, so that the large resistance caused by the fact that all elements are not tightly connected during bolt fixing is avoided, and the conductivity is improved;

3. the graphite silver plating layer is used for reducing sliding friction force when the contact plate rotates between the upper contact plate and the lower contact plate, and is also beneficial to enhancing conductivity.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a high-voltage contact of a capacity-adjusting switch of a transformer in this embodiment.

Fig. 2 is a schematic diagram of an explosion structure showing the positional relationship between a fixed block and a sliding block in the present embodiment.

Fig. 3 is a schematic diagram of an explosion structure showing the positional relationship between the limiting block and the limiting groove in the present embodiment.

Fig. 4 is a schematic structural diagram showing the positional relationship between the contact plate and the upper contact plate, and between the contact plate and the lower contact plate in the present embodiment.

Reference numerals illustrate: 1. a mounting base; 2. binding posts; 3. a first contact; 4. a second contact; 5. a fixing assembly; 51. a fixed block; 52. a locking ring; 6. a mounting hole; 7. a threaded column; 8. a limit groove; 9. a limiting block; 10. a compression assembly; 101. a compression spring; 11. a sliding block; 12. a slip groove; 13. an upper contact piece; 14. a lower contact piece; 15. a contact plate; 16. an elastic sheet; 17. insulating porcelain column.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-4.

The embodiment of the application discloses a transformer capacity-regulating switch high-voltage contact. Referring to fig. 1 and 2, the high-voltage contact of the capacity-regulating switch of the transformer comprises a mounting seat 1, the mounting seat 1 is fixed on a transformer box and other machine bodies, a binding post 2 and a first contact 3 are arranged on the mounting seat 1, and the binding post 2 and the first contact 3 are integrated, so that the problem of large resistance caused by untight connection between components is avoided.

The first contact 3 is used for abutting against the second contact 4, in this embodiment, the second contact 4 rotates into the first contact 3 and abuts against the inner wall of the first contact 3, and the mounting base 1 is provided with a fixing component 5 for fixing the first contact 3 and a pressing component 10 for transversely abutting against the first contact 3 and the second contact 4.

The first contact 3 is fixed by the fixing component 5, and then the first contact 3 and the second contact 4 are transversely abutted by the pressing component 10 along the length direction of the first contact 3 and the second contact 4, so that virtual connection caused by deformation of the first contact 3 and the second contact 4 is avoided, and the reliability of the device is improved.

Referring to fig. 2 and 3, the fixing assembly 5 includes a fixing block 51 and a locking ring 52, the fixing block 51 is square, the fixing block 51 may be an insulating object, the fixing block 51 is disposed on the mounting seat 1, a mounting hole 6 is formed in the fixing block 51, the first contact 3 is located in the mounting hole 6, a threaded column 7 is formed in a side wall of the fixing block 51, a plurality of limiting grooves 8 are formed in a peripheral wall of the threaded column 7, a plurality of limiting blocks 9 are formed in the first contact 3, the limiting grooves 8 and the limiting blocks 9 are three in number, the three limiting blocks 9 are respectively in one-to-one correspondence with the three limiting grooves 8, the limiting blocks 9 are clamped in the limiting grooves 8, and the locking ring 52 is in threaded connection with the threaded column 7 and abuts against a side wall of the fixing block 51, so that the first contact 3 is fixed on the fixing block 51, and the first contact 3 and the second contact 4 are stably abutted tightly.

Referring to fig. 2, the compression assembly 10 includes a compression spring 101 fixedly and rapidly connected to the mounting base 1, a sliding block 11 is provided on a side wall of the fixed block 51, a sliding groove 12 is provided on the mounting base 1, the fixed block 51 is slidably connected in the sliding groove 12, the compression spring 101 is located in the sliding groove 12, one end of the compression spring 101 is fixed on the sliding block 11, and the other end of the compression spring 101 is fixed on a groove wall of the sliding groove 12.

When the first contact 3 is disconnected from the second contact 4, the compression spring 101 is not elastic, and when the second contact 4 rotates into the first contact 3, the compression spring 101 compresses or stretches, so that the first contact 3 and the second contact 4 are transversely abutted, and virtual connection between the first contact 3 and the second contact 4 is prevented.

Referring to fig. 1 and 4, the first contact 3 is provided with an upper contact piece 13 and a lower contact piece 14, the second contact 4 is provided with a contact plate 15, the contact plate 15 is located between the upper contact piece 13 and the lower contact piece 14 and abuts against the side walls of the upper contact piece 13 and the lower contact piece 14, and the contact area between the first contact 3 and the second contact 4 is increased by the contact plate 15, the upper contact piece 13 and the lower contact piece 14, so that the virtual connection is further prevented.

Referring to fig. 1 and 4, chamfers are provided on the contact plate 15, the upper contact piece 13 and the lower contact piece 14, when the second contact 4 rotates to the first contact 3, the spring is not elastic in the initial position, the side walls of the contact plate 15 correspond to the side walls of the upper contact piece 13 and the lower contact piece 14, and then the contact plate 15 gradually rotates between the upper contact plate 15 and the lower contact plate 15 under the effect of the chamfers, and at this time, the spring is stretched or compressed.

When the compression spring 101 stretches, the contact plate 15 abuts against the side wall of the upper contact piece 13 and the lower contact piece 14, which is close to the second contact 4; when the compression spring 101 is compressed, the contact plate 15 abuts against the side wall of the upper contact piece 13 and the lower contact piece 14, which is far away from the second contact 4, and the abutting positions of the two contact plates are helpful to prevent virtual connection between the contact plate 15 and the upper contact piece 13 and the lower contact piece 14, so that the reliability of the device is improved.

The longitudinal compression is converted into transverse abutting along the length direction of the first contact 3 and the second contact 4, so that the virtual connection caused by deformation of the upper contact piece 13 and the lower contact piece 14 is prevented, and the reliability of the device is improved.

Referring to fig. 4, the contact plate 15, the upper contact plate 13 and the lower contact plate 14 are provided with graphite silver coating, and the graphite silver coating helps to reduce the sliding friction between the contact plate 15 and the upper contact plate 13 and the lower contact plate 14 and also improves the conductivity during the rotation of the contact plate 15 between the upper contact plate 13 and the lower contact plate 14.

Referring to fig. 4, the upper contact piece 13 and the lower contact piece 14 are provided with elastic pieces 16, and the elastic pieces 16 are abutted against the side walls of the contact plate 15, thereby further helping to prevent false connection.

Referring to fig. 1 and 4, the second contact 4 is provided with an insulating knob 17, which helps to prevent thermal deformation such as bending of the second contact 4, and prevents the second contact 4 from being unable to abut against the first contact 3 due to thermal deformation, thereby causing virtual connection.

The implementation principle of the high-voltage contact of the transformer capacity-regulating switch in the embodiment of the application is as follows: during installation, the clamping block is placed into the clamping groove and then locked by the locking ring 52; when the contact plate 15 rotates between the upper contact plate 13 and the lower contact plate 14, the elastic force of the compression spring 101 is utilized to enable the contact plate 15 to transversely abut against the side walls of the upper contact plate 13 and the lower contact plate 14, so that virtual connection caused by deformation of the upper contact plate 13 and the lower contact plate 14 is avoided, and reliability of the device is improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The utility model provides a transformer capacity-regulating switch high voltage contact which characterized in that: including mount pad (1), be equipped with terminal (2) and first contact (3) on mount pad (1), first contact (3) are used for supporting tightly with second contact (4), be equipped with fixed subassembly (5) of fixed first contact (3) on mount pad (1) and be equipped with first contact (3) and the horizontal tight compression module (10) of supporting of second contact (4).

2. The transformer capacity regulating switch high voltage contact of claim 1, wherein: the utility model provides a fixed subassembly (5) is including fixed block (51) and locking ring (52), fixed block (51) set up on mount pad (1), be equipped with mounting hole (6) on fixed block (51), first contact (3) are located mounting hole (6), be equipped with screw thread post (7) on the lateral wall of fixed block (51), be equipped with a plurality of spacing grooves (8) on the perisporium of screw thread post (7), be equipped with a plurality of stopper (9) on first contact (3), a plurality of stopper (9) respectively with a plurality of spacing grooves (8) one-to-one, stopper (9) chucking is in spacing groove (8), locking ring (52) threaded connection is on screw thread post (7) and with the lateral wall butt of fixed block (51).

3. The transformer capacity regulating switch high voltage contact of claim 2, wherein: the compression assembly (10) comprises a compression spring (101), a sliding block (11) is arranged on the side wall of the fixed block (51), a sliding groove (12) is formed in the mounting seat (1), the compression spring (101) is located in the sliding groove (12), one end of the compression spring (101) is fixed on the sliding block (11), and the other end of the compression spring (101) is fixed on the groove wall of the sliding groove (12).

4. The transformer capacity regulating switch high voltage contact of claim 1, wherein: the contact device is characterized in that an upper contact piece (13) and a lower contact piece (14) are arranged on the first contact (3), a contact plate (15) is arranged on the second contact (4), and the contact plate (15) is positioned between the upper contact piece (13) and the lower contact piece (14) and is abutted against the side walls of the upper contact piece (13) and the lower contact piece (14).

5. The transformer capacity regulating switch high voltage contact of claim 4, wherein: chamfer angles are arranged on the contact plate (15), the upper contact piece (13) and the lower contact piece (14).

6. The transformer capacity regulating switch high voltage contact of claim 4, wherein: graphite silver plating layers are arranged on the contact plate (15), the upper contact piece (13) and the lower contact piece (14).

7. The transformer capacity regulating switch high voltage contact of claim 4, wherein: elastic sheets (16) are arranged on the upper contact sheet (13) and the lower contact sheet (14).

8. The transformer capacity regulating switch high voltage contact of claim 1, wherein: and an insulating knob insulator (17) is arranged on the second contact (4).