CN214123675U

CN214123675U - High-voltage lead structure of dry-type transformer

Info

Publication number: CN214123675U
Application number: CN202120345480.0U
Authority: CN
Inventors: 范时祥
Original assignee: Shanghai Junqi Electric Co ltd
Current assignee: Shanghai Junqi Electric Co ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-09-03
Anticipated expiration: 2031-02-05

Abstract

The application relates to a high-voltage lead structure of a dry-type transformer, which comprises a protection box, wherein one side wall of the protection box is provided with a lead port for penetrating a high-voltage transmission line, the side wall of the protection box opposite to the lead port is provided with a wiring port for penetrating a high-voltage connecting wire, a wiring copper bar is arranged in the protection box and comprises a vertical part and a bent part, a first connecting port is arranged at the position of the vertical part close to the wiring port, a second connecting port is arranged at the position of the bent part far away from the vertical part, an operation port is arranged on one side wall of the protection box, the operation opening is provided with a movable door in a rotating mode, the side wall, far away from the operation opening, of the protection box is provided with an insulation column fixedly connected with the dry-type transformer, and the insulation column is fixedly connected with the vertical portion of the wiring copper bar through a locking piece. This application has the effect that reduces the copper bar probability of damaging in the high-voltage connection structure.

Description

High-voltage lead structure of dry-type transformer

Technical Field

The application relates to the field of dry-type transformers, in particular to a high-voltage lead structure of a dry-type transformer.

Background

At present, a high-voltage lead structure of a dry-type transformer in the related art includes an insulation column and a copper bar, one end of the copper bar is connected to a high-voltage transmission line, one end of the copper bar far away from the high-voltage transmission line is connected to a high-voltage connection line, the high-voltage transmission line is connected to a high-voltage coil of the dry-type transformer, the insulation column is fixedly connected to an upper clamping piece of the dry-type transformer, and one end of the insulation column far away from the dry-type transformer is fixedly connected to the copper bar.

In view of the above-mentioned related art, the inventors consider that there is a defect that the copper bar is easily damaged.

SUMMERY OF THE UTILITY MODEL

In order to reduce the damaged probability of copper bar in the high-voltage wiring structure, this application provides a high-voltage lead structure of dry-type transformer.

The application provides a dry-type transformer's high-voltage lead structure adopts following technical scheme:

the utility model provides a high voltage lead structure of dry-type transformer, includes the protection box, be provided with the lead wire mouth that is used for wearing to establish high voltage transmission line on the lateral wall of protection box, the protection box is provided with the wiring mouth that is used for wearing to establish high voltage connection line on the lateral wall relative with the lead wire mouth, be provided with the wiring copper bar in the protection box, the wiring copper bar includes vertical portion and kink, vertical portion is provided with first connector in the position department that is close to the wiring mouth, the kink is provided with the second connector in the position department of keeping away from vertical portion, the operation mouth has been seted up on the lateral wall of protection box, it is provided with the dodge gate to rotate on the operation mouth, the protection box is provided with on the lateral wall of keeping away from the operation mouth and is used for the insulated column with dry-type transformer fixed connection, the insulated column passes through retaining member fixed connection with the vertical portion of wiring copper bar.

Through adopting above-mentioned technical scheme, high tension transmission line passes through the lead wire mouth and gets into in the protection box to be connected with the second connector of the kink of wiring copper bar. The high-voltage connecting wire is connected with the first connecting port of the vertical part of the wiring copper bar through the wiring port. High-voltage current input by the high-voltage power transmission line is conducted to the high-voltage connecting line through the connecting copper bar and is conducted to the high-voltage winding of the dry-type transformer through the high-voltage connecting line. The protection box can prevent external impact or dirty objects from damaging the wiring copper bar. The insulation column accessible retaining member will protect the box and fix the setting on dry-type transformer with the wiring copper bar, and the insulation column can prevent that high-pressure copper bar and dry-type transformer direct intercommunication from taking place the short circuit. Technical staff's accessible is opened the dodge gate to carry out operations such as wiring, maintenance to the wiring copper bar through the operation mouth. So set up, be favorable to reducing the probability that the wiring copper bar takes place to damage, promoted the life of wiring copper bar.

Preferably, a sealing ring is fixedly arranged on the circumferential inner side wall of the wiring port and the lead port.

Through adopting above-mentioned technical scheme, the sealing washer can reduce the probability that external filth gets into in the protection box through the gap between wiring mouth and the high voltage connection line or the gap between lead wire mouth and the high voltage transmission line, is favorable to promoting the leakproofness of protection box.

Preferably, an adhesive tape is fixedly arranged on the circumferential side wall of the movable door close to the protection box.

Through adopting above-mentioned technical scheme, the adhesive tape can reduce the probability that external filth passes through the gap entering protection box between dodge gate and the operation mouth inside wall, is favorable to promoting the leakproofness of protection box.

Preferably, the outer side wall of the wiring copper bar is uniformly covered with a low-resistance layer.

By adopting the technical scheme, when the wiring copper bar is put into use and the current is switched on, the skin effect is generated, and by arranging the low-resistance layer, the adverse effect of resistance increase caused by the skin effect can be reduced, and the improvement of the conductive efficiency of the wiring copper bar is facilitated.

Preferably, the inner side wall of the protection box is fixedly covered with a moisture-proof layer.

Through adopting above-mentioned technical scheme, when dry-type transformer's operational environment was comparatively moist, the dampproof course can reduce steam and get into the probability that the metal structure that the protection box leads to inside of protection box to take place the corrosion, is favorable to promoting the humidity resistance of protection box.

Preferably, a plurality of heat dissipation ports are formed in two opposite side walls of the protection box.

Through adopting above-mentioned technical scheme for the heat accessible thermovent that produces when the wiring copper bar uses gives off to the external world, prevents that the wiring copper bar from producing harmful effects because of overheated when using, is favorable to promoting the thermal diffusivity of protection box.

Preferably, the protection box is provided with a protection cover at the position of the heat dissipation opening close to the lead opening.

Through adopting above-mentioned technical scheme, the probability that external filth got into the protection box through the thermovent can be reduced to the protection casing, is favorable to promoting the whole application of protection box.

Preferably, the movable door is provided with an observation window.

Through adopting above-mentioned technical scheme, technical staff can learn the condition in the protection box through the observation window when the protection box uses, and the technical staff of being convenient for in time makes each item adjustment, is favorable to promoting the convenience of protection box.

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

through setting up the protection box, the wiring copper bar sets up in the protection box, is provided with the operation mouth on the protection box, rotates on the operation mouth and is provided with the dodge gate, and the protection box can prevent that external impact or filthy thing from producing destruction to the wiring copper bar, and the dodge gate is opened to the technical staff's accessible to wiring, operation such as maintenance are carried out to the wiring copper bar through the operation mouth. Due to the arrangement, the probability of damage of the wiring copper bar is favorably reduced, and the service life of the wiring copper bar is prolonged;

the sealing ring is arranged on the inner side wall of the wiring port and the lead port of the protection box, so that the probability that external dirt enters the protection box through a gap between the wiring port and the high-voltage connecting wire or a gap between the lead port and the high-voltage transmission line can be reduced, and the sealing property of the protection box is favorably improved;

the low-resistance layer is covered on the side wall of the wiring copper bar, so that the adverse effect of resistance rise caused by skin effect can be reduced, and the improvement of the conductive efficiency of the wiring copper bar is facilitated.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Fig. 2 is a cross-sectional view of an embodiment of the present application.

Fig. 3 is an enlarged schematic view of a portion a in fig. 2.

Description of reference numerals: 1. a protection box; 2. a wiring copper bar; 21. a vertical portion; 22. a bending section; 3. a first connection port; 4. a second connection port; 5. a wire leading port; 6. a wiring port; 7. an insulating column; 8. a locking member; 9. an operation port; 10. a movable door; 11. an adhesive tape; 12. an observation window; 13. a seal ring; 14. a low resistance layer; 15. a heat dissipation port; 16. a protective cover; 17. a moisture barrier.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a high-voltage lead structure of a dry-type transformer. Referring to fig. 1 and 2, the high-voltage lead structure of the dry-type transformer includes a protection box 1 in a rectangular parallelepiped shape, a wiring copper bar 2 in an L shape is arranged in the protection box 1, the wiring copper bar 2 includes a bending portion 22 and a vertical portion 21, a circular first connection port 3 is vertically arranged at a position where the bending portion 22 is far away from the vertical portion 21, and a circular second connection port 4 is vertically arranged at a position where the bending portion 22 is far away from the vertical portion 21. The side wall of the protection box 1 close to the bending part 22 is vertically provided with a round lead opening 5, and the lead opening 5 is used for penetrating a high-voltage transmission line. The protection box 1 is vertically provided with a circular wiring port 6 on the side wall opposite to the lead port 5, and the wiring port 6 is used for penetrating a high-voltage connecting wire.

The one end of protection box 1 length direction's lateral wall keeping away from wiring copper bar 2 is provided with the insulating column 7 of cylinder type, and in this embodiment, the material of insulating column 7 can be pottery. The insulating column 7 is close to the axial side wall of the wiring copper bar 2 and is abutted against the side wall of the protection box 1. The insulating column 7 passes through retaining member 8 fixed connection with wiring copper bar 2, and in this embodiment, retaining member 8 can be bolt and nut.

A rectangular operation opening 9 is fixedly formed in the side wall of the protection box 1 far away from the insulating column 7, a rectangular movable door 10 is rotatably arranged on the operation opening 9, and a rubber strip 11 is fixedly embedded in the side wall of the movable door 10 near the operation opening 9, wherein in the embodiment, the rubber strip 11 can be made of butadiene rubber. The adhesive tape 11 can reduce the probability that external dirt enters the protection box 1 through the gap between the movable door 10 and the inner side wall of the operation opening 9, and is favorable for improving the sealing performance of the protection box 1.

The side wall of the movable door 10 in the length direction is provided with a rectangular observation window 12, and in this embodiment, the observation window 12 may be made of organic glass. Technical staff can know the condition in the protection box 1 through the observation window 12 when the protection box 1 is used, and the technical staff of being convenient for in time makes each item adjustment, is favorable to promoting the convenience of protection box 1.

The sealing ring 13 is fixedly embedded on the circumferential inner side wall of the lead port 5 and the wiring port 6, and in the embodiment, the sealing ring 13 can be made of butadiene rubber. The sealing ring 13 can reduce the probability that external dirt enters the protection box 1 through the gap between the wiring port 6 and the high-voltage connecting line or the gap between the lead port 5 and the high-voltage transmission line, and is favorable for improving the sealing property of the protection box 1.

A plurality of rectangular heat dissipation ports 15 are uniformly formed in two opposite side walls of the protection box 1 along the length direction, and a protection cover 16 with an arc-shaped section is fixedly welded on the side wall of the protection box 1 at the position, close to the lead port 5, of the heat dissipation port 15. The heat accessible thermovent 15 that thermovent 15 produced when making wiring copper bar 2 use gives off to the external world, prevents that wiring copper bar 2 from producing harmful effects because of overheated when using, is favorable to promoting the thermal diffusivity of protection box 1. The protective cover 16 can reduce the probability that external dirt enters the protective box 1 through the heat dissipation opening 15, and is beneficial to improving the overall applicability of the protective box 1.

Referring to fig. 2 and 3, the side wall of the wiring copper bar 2 is coated with the low resistance layer 14, in this embodiment, the material of the low resistance layer 14 may be silver. When the wiring copper bar 2 is put into use and current is switched on, a skin effect is generated, and by arranging the low-resistance layer 14, the adverse effect of resistance rise caused by the skin effect can be reduced, and the improvement of the conductive efficiency of the wiring copper bar 2 is facilitated.

The inside wall of protection box 1 passes through the fixed cover of glue and is provided with dampproof course 17, and in this embodiment, the material of dampproof course 17 can be glass fiber. When the working environment of the dry-type transformer is relatively humid, the moisture-proof layer 17 can reduce the probability that the moisture enters the protection box 1 to cause the corrosion of the metal structure inside the protection box 1, and is favorable for improving the moisture resistance of the protection box 1.

The implementation principle of the high-voltage lead structure of the dry-type transformer in the embodiment of the application is as follows: the high-voltage transmission line enters the protection box 1 through the lead port 5 and is connected with the second connecting port 4 of the bending part 22 of the wiring copper bar 2. The high-voltage connecting wire is connected with the first connecting port 3 of the vertical part 21 of the connecting copper bar 2 through the connecting port 6. High-voltage current input by the high-voltage power transmission line is conducted to the high-voltage connecting line through the connecting copper bar 2 and is conducted to a high-voltage winding of the dry-type transformer through the high-voltage connecting line. The protection box 1 can prevent external impact or dirty objects from damaging the wiring copper bar 2. The insulation column 7 can be used for fixing the protection box 1 and the wiring copper bar 2 on the dry-type transformer through the locking piece 8, and the insulation column 7 can prevent the high-voltage copper bar from being directly communicated with the dry-type transformer to cause short circuit. Technicians can open the movable door 10 and perform operations such as wiring, maintenance and the like on the wiring copper bar 2 through the operation port 9. So set up, be favorable to reducing the probability that wiring copper bar 2 takes place the damage, promoted wiring copper bar 2's life.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A high-voltage lead structure of a dry-type transformer is characterized in that: the dry type transformer protection device comprises a protection box (1), wherein a lead port (5) for penetrating a high-voltage transmission line is formed in one side wall of the protection box (1), a wiring port (6) for penetrating a high-voltage connection line is formed in the side wall, opposite to the lead port (5), of the protection box (1), a wiring copper bar (2) is arranged in the protection box (1), the wiring copper bar (2) comprises a vertical portion (21) and a bent portion (22), a first connecting port (3) is formed in the position, close to the wiring port (6), of the vertical portion (21), a second connecting port (4) is formed in the position, far away from the vertical portion (21), an operation port (9) is formed in one side wall of the protection box (1), a movable door (10) is rotatably arranged on the operation port (9), an insulating column (7) for fixedly connecting with a dry type transformer is arranged on the side wall, far away from the operation port (9), of the protection box (1), the insulating column (7) is fixedly connected with the vertical part (21) of the wiring copper bar (2) through a locking piece (8).

2. A high-voltage lead structure of a dry type transformer as set forth in claim 1, wherein: and a sealing ring (13) is fixedly arranged on the circumferential inner side wall of the wiring port (6) and the lead port (5).

3. A high-voltage lead structure of a dry type transformer as set forth in claim 1, wherein: and an adhesive tape (11) is fixedly arranged on the circumferential side wall of the movable door (10) close to the protection box (1).

4. A high-voltage lead structure of a dry type transformer as set forth in claim 1, wherein: and the outer side wall of the wiring copper bar (2) is uniformly covered with a low-resistance layer (14).

5. A high-voltage lead structure of a dry type transformer as set forth in claim 1, wherein: and a moisture-proof layer (17) is fixedly covered on the inner side wall of the protection box (1).

6. A high-voltage lead structure of a dry type transformer as set forth in claim 1, wherein: a plurality of heat dissipation ports (15) are arranged on two opposite side walls of the protection box (1).

7. A high-voltage lead structure of a dry type transformer as claimed in claim 6, wherein: the protection box (1) is provided with a protection cover (16) at the position of the heat dissipation opening (15) close to the lead opening (5).

8. A high-voltage lead structure of a dry type transformer as set forth in claim 1, wherein: an observation window (12) is arranged on the movable door (10).