CN217061748U

CN217061748U - Three-phase voltage transformer with fuse for high-voltage switch cabinet

Info

Publication number: CN217061748U
Application number: CN202122551109.2U
Authority: CN
Inventors: 戴胜潮
Original assignee: Yunnan Minyang Electric Co ltd
Current assignee: Yunnan Minyang Electric Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-07-26
Anticipated expiration: 2031-10-22

Abstract

The utility model relates to a high tension switchgear technical field just discloses a take fuse three-phase voltage transformer for high tension switchgear, including winding and iron core, the inside fixed mounting of iron core has quantity to be three winding, and is three the equal fixed mounting in top of winding has quantity to be two splicing seats, splicing seat's inside threaded connection has the insulating cover that extends to splicing seat outside, and is three mounting seat fixed connection is passed through to the bottom of winding, the positive fixed mounting of mounting seat has quantity to be three and the secondary wiring end of being connected with three winding electricity respectively, insulating cover's inside fixed mounting has a wiring end, the top threaded connection of wiring end has the line ball bolt. This a take fuse three-phase voltage transformer for high tension switchgear can carry out quick change operation when inside fuse damages, has avoided the whole of mutual-inductor to scrap, has reduced the replacement cost, and changes more simply convenient.

Description

Three-phase voltage transformer with fuse for high-voltage switch cabinet

Technical Field

The utility model relates to a high tension switchgear technical field specifically is a take fuse three-phase voltage transformer for high tension switchgear.

Background

The voltage transformer is similar to a transformer and is an instrument for transforming voltage, but the purpose of transforming voltage by the transformer is to conveniently transmit electric energy, so the capacity is very large, and the kilovolt-ampere or megavolt-ampere is generally taken as a calculation unit; the voltage transformer is mainly used for supplying power to a measuring instrument and a relay protection device, measuring the voltage, power and electric energy of a line, or protecting valuable equipment, a motor and a transformer in the line when the line fails, so that the capacity of the voltage transformer is very small, generally only a few volt-amperes, dozens of volt-amperes, and maximally not more than a thousand volt-amperes.

The existing three-phase voltage transformer with the fuse for the high-voltage switch cabinet needs to be detached from the high-voltage switch cabinet for replacement after the fuse is broken, but the internal fuse is difficult to replace, so that the replacement cost after damage is high, and the problem of solving the problem is solved by the three-phase voltage transformer with the fuse for the high-voltage switch cabinet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a take fuse three-phase voltage transformer for high tension switchgear to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a three-phase voltage transformer with a fuse for a high-voltage switch cabinet comprises windings and an iron core, wherein three windings are fixedly arranged inside the iron core, two connecting post seats are fixedly arranged at the tops of the three windings, an insulating sleeve extending to the outside of the connecting post seats is connected with the internal threads of the connecting post seats, the bottoms of the three windings are fixedly connected through a mounting seat, three secondary wiring ends which are respectively and electrically connected with the three windings are fixedly arranged on the front surface of the mounting seat, a primary wiring end is fixedly arranged inside the insulating sleeve, a line pressing bolt is connected with the top threads of the primary wiring end, two elastic sheets which are positioned inside the insulating sleeve are fixedly arranged at the bottom of the primary wiring end, and a high-voltage fuse positioned inside the insulating sleeve is movably arranged on one opposite side of the two elastic sheets, the inside fixed mounting who connects the post seat has the electrically conductive seat that extends to insulating cover inside and contact bottom the high-voltage fuse, electrically conductive seat is connected with the winding electricity.

The beneficial effects of the utility model are that:

the three-phase voltage transformer with the fuse for the high-voltage switch cabinet is installed in the high-voltage switch cabinet through the installation seat, the connecting wire is connected with the primary wiring end through rotating the wire pressing bolt, after the inside of the high-voltage fuse is broken, the connecting wire on the primary wiring end is firstly detached, then the insulating sleeve is twisted to enable the connecting wire to leave from the top of the connecting column seat, namely, the bottom of the high-voltage fuse can leave the conductive seat, the high-voltage fuse to be replaced is downwards drawn out through the two elastic pieces, otherwise, the installation operation of the high-voltage fuse can be carried out, current enters the high-voltage fuse through the primary wiring end and the elastic pieces in the use process, then enters the winding from the conductive seat and flows out through the primary wiring end on the other side of the winding, the structure of the voltage transformer is stable and reasonable, when the internal fuse is damaged, the quick replacement operation can be carried out, the integral scrapping of the transformer is avoided, the replacement cost is reduced, and the replacement is more simple and convenient.

As a further aspect of the present invention: the iron core includes iron sheet and apron, the quantity of iron sheet is a plurality of and is to pile up the form setting, the top of iron sheet and the equal fixed mounting in bottom of iron sheet have the apron, the opening that quantity is four is seted up at the top of iron core.

As the utility model discloses further scheme again: the outer parts of the two elastic pieces are all arc-shaped, and the inner walls of the elastic pieces are in contact with the outer part of the high-voltage fuse.

Adopt above-mentioned further scheme's beneficial effect to be, two shell fragments that are circular-arc setting can carry on spacingly to high-voltage fuse's tip to rather than external contact, electrically conduct, make the electric current can conduct to once on the terminal.

As the utility model discloses further scheme again: the top of the conductive seat is provided with a slot, and the slot is positioned outside the bottom end of the high-voltage fuse and is in contact with the high-voltage fuse.

The beneficial effect who adopts above-mentioned further scheme is that, the slot that the conductive seat top set up can make high-voltage fuse's bottom insert, carries on spacingly to high-voltage fuse bottom to make it and conductive seat stable contact carry out the current conduction.

As a further aspect of the present invention: the bottom outside fixed mounting of insulating cover has the insulating backing ring with the contact of connector pedestal top, two connector pedestal at winding top are symmetry setting from beginning to end.

Adopt above-mentioned further scheme's beneficial effect is that, the insulating backing ring that sets up can make insulating cover be connected the back with the post connection seat, seals its junction, prevents that outside air or moisture from getting into the inside of post connection seat, and two post connection seats that the front and back symmetry set up can make its inside electrically conductive seat be connected with the inside conductor both ends of winding respectively.

As the utility model discloses further scheme again: the mount pad includes fixed block, horizontal pole, fixing bolt and installation foot piece, the quantity of fixed block be three and respectively with the bottom fixed connection of three winding, the quantity of horizontal pole is two and runs through three fixed block, the equal threaded connection in both ends of horizontal pole has fixing bolt, the quantity of installation foot piece be two and through fixing bolt respectively with left and right sides fixed block fixed connection.

Adopt above-mentioned further scheme's beneficial effect is that, the installation foot piece that sets up is used for fixing the mutual-inductor in high tension switchgear's inside, and the horizontal pole that sets up is used for fixing three fixed block with fixing bolt, improves connection stability, fixes the installation foot piece simultaneously.

As a further aspect of the present invention: the secondary wiring end comprises a fixing plate and screws, the fixing plate is fixedly connected with the mounting seat, and the front face of the fixing plate is in threaded connection with the four screws.

Drawings

Fig. 1 is a schematic structural diagram of a fused three-phase voltage transformer for a high-voltage switch cabinet;

fig. 2 is a schematic structural diagram of an iron core in a three-phase voltage transformer with a fuse for a high-voltage switch cabinet;

FIG. 3 is a front cross-sectional view of an insulating sleeve in a fused three-phase voltage transformer for a high voltage switchgear;

fig. 4 is a schematic structural diagram of a mounting seat in a fused three-phase voltage transformer for a high-voltage switch cabinet.

In the figure: 1. a winding; 2. an iron core; 21. iron sheets; 22. a cover plate; 3. a column connecting seat; 4. an insulating sleeve; 5. a mounting seat; 51. a fixed block; 52. a cross bar; 53. fixing the bolt; 54. mounting a foot sheet; 6. a secondary terminal; 7. a primary terminal; 8. a wire pressing bolt; 9. a spring plate; 10. a high voltage fuse; 11. a conductive seat.

Detailed Description

Referring to fig. 1-4, in the embodiment of the present invention, a fused three-phase voltage transformer for a high voltage switch cabinet comprises a winding 1 and an iron core 2, wherein three windings 1 are fixedly installed inside the iron core 2, two post bases 3 are fixedly installed on the tops of the three windings 1, an insulating sleeve 4 extending to the outside of the post base 3 is connected to the inner threads of the post bases 3, the bottoms of the three windings 1 are fixedly connected to each other through a mounting base 5, three secondary terminals 6 electrically connected to the three windings 1 are fixedly installed on the front side of the mounting base 5, a primary terminal 7 is fixedly installed inside the insulating sleeve 4, a wire pressing bolt 8 is connected to the top threads of the primary terminal 7, two spring pieces 9 are fixedly installed on the bottom of the primary terminal 7 and located inside the insulating sleeve 4, a high voltage fuse 10 located inside the insulating sleeve 4 is movably installed on one side opposite to the two spring pieces 9, the contact column seat 3 is fixedly provided with a conductive seat 11 which extends into the insulating sleeve 4 and contacts with the bottom of the high-voltage fuse 10, the conductive seat 11 is electrically connected with the winding 1, the iron core 2 comprises iron sheets 21 and a cover plate 22, the iron sheets 21 are stacked, the cover plate 22 is fixedly arranged at the top of the top iron sheet 21 and the bottom of the bottom iron sheet 21, the top of the iron core 2 is provided with four through holes, the outer parts of the two elastic sheets 9 are both arc-shaped, the inner walls of the elastic sheets 9 contact with the outer part of the high-voltage fuse 10, the two elastic sheets 9 which are arc-shaped can limit the end part of the high-voltage fuse 10 and contact with the outer part of the high-voltage fuse 10 for conducting, current can be conducted to the primary wiring terminal 7, the top of the conductive seat 11 is provided with an insertion slot, the insertion slot is positioned at the outer part of the bottom end of the high-voltage fuse 10 and contacts with the high-voltage fuse 10, the insertion slot arranged at the top of the conductive seat 11 can enable the bottom end of the high-voltage fuse 10 to be inserted, the bottom end of a high-voltage fuse 10 is limited and stably contacted with a conductive seat 11 to conduct current, an insulating backing ring contacted with the top of a connecting column seat 3 is fixedly arranged outside the bottom end of an insulating sleeve 4, two connecting column seats 3 at the top of a winding 1 are symmetrically arranged in the front and back direction, the insulating backing ring can seal the joint of the insulating sleeve 4 and the connecting column seats 3 after the insulating sleeve 4 is connected with the connecting column seats 3 to prevent outside air or moisture from entering the inside of the connecting column seats 3, the two connecting column seats 3 symmetrically arranged in the front and back direction can enable the conductive seats 11 inside the connecting column seats to be respectively connected with the two ends of a conductor inside the winding 1, each mounting seat 5 comprises three fixing blocks 51, cross rods 52, fixing bolts 53 and mounting pin pieces 54, the three fixing blocks 51 are respectively and fixedly connected with the bottoms of the three windings 1, the two cross rods 52 penetrate through the three fixing blocks 51, the two ends of each cross rod 52 are respectively in threaded connection with the fixing bolts 53, the quantity of installation foot piece 54 is two and through fixing bolt 53 respectively with left and right sides fixed block 51 fixed connection, the installation foot piece 54 of setting is used for fixing the mutual-inductor in high tension switchgear's inside, the horizontal pole 52 and the fixing bolt 53 that set up are used for fixing three fixed block 51, improve connection stability, fix installation foot piece 54 simultaneously, secondary wiring end 6 includes fixed plate and screw, fixed plate and 5 fixed connection of mount pad, the front threaded connection of fixed plate has the quantity to be four screws.

The utility model discloses a theory of operation is:

install the inside at high tension switchgear through mount pad 5, and through rotating line ball bolt 8, be connected the connecting wire with a wiring end 7, after the inside of high tension fuse 10 opens circuit, at first pull down the connecting wire on a wiring end 7, twist insulating cover 4 again, make its top from the pillar socket 3 leave, can make the bottom of high tension fuse 10 leave conducting seat 11, take out the high tension fuse 10 that needs to be changed downwards through two shell fragments 9, otherwise can carry out the installation operation of high tension fuse 10, the electric current gets into high tension fuse 10 through a wiring end 7 and shell fragment 9 in the use, get into winding 1 by conducting seat 11 again, the primary wiring end 7 of rethread winding 1 opposite side flows out.

The above-mentioned, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The three-phase voltage transformer with the fuse for the high-voltage switch cabinet comprises windings (1) and an iron core (2) and is characterized in that the windings (1) with three are fixedly arranged inside the iron core (2), the top parts of the windings (1) with two connecting column bases (3) are fixedly arranged, the internal threads of the connecting column bases (3) are connected with insulating sleeves (4) extending to the outer parts of the connecting column bases (3), the bottoms of the windings (1) with three are fixedly connected through mounting seats (5), the front surfaces of the mounting seats (5) with three secondary wiring ends (6) which are respectively electrically connected with the three windings (1) are fixedly arranged, primary wiring ends (7) are fixedly arranged inside the insulating sleeves (4), and the top threads of the primary wiring ends (7) with wire pressing bolts (8), the bottom fixed mounting of primary connection end (7) has quantity for two and is located insulating cover (4) inside shell fragment (9), two the relative one side movable mounting of shell fragment (9) has high voltage fuse (10) that are located insulating cover (4) inside, the inside fixed mounting who connects post seat (3) has the electrically conductive seat (11) that extends to insulating cover (4) inside and contact bottom high voltage fuse (10), electrically conductive seat (11) are connected with winding (1) electricity.

2. The fused three-phase voltage transformer for the high-voltage switch cabinet according to claim 1, wherein the iron core (2) comprises a plurality of iron sheets (21) and a cover plate (22), the iron sheets (21) are stacked, the cover plate (22) is fixedly mounted at the top of the iron sheets (21) and at the bottom of the iron sheets (21), and four through openings are formed in the top of the iron core (2).

3. The fused three-phase voltage transformer for the high-voltage switch cabinet according to claim 1, wherein the two spring plates (9) are arranged in an arc shape, and the inner walls of the spring plates (9) are in contact with the outside of the high-voltage fuse (10).

4. The fused three-phase voltage transformer for a high-voltage switch cabinet according to claim 1, wherein the top of the conductive base (11) is provided with a slot, and the slot is located outside the bottom end of the high-voltage fuse (10) and is in contact with the high-voltage fuse (10).

5. The fused three-phase voltage transformer for the high-voltage switch cabinet according to claim 1, wherein an insulating backing ring contacting with the top of the column base (3) is fixedly installed outside the bottom end of the insulating sleeve (4), and the two column bases (3) on the top of the winding (1) are symmetrically arranged in front and back.

6. The fused three-phase voltage transformer for the high-voltage switch cabinet according to claim 1, wherein the mounting seat (5) comprises fixing blocks (51), cross rods (52), fixing bolts (53) and mounting foot pieces (54), the number of the fixing blocks (51) is three, the fixing blocks are respectively and fixedly connected with the bottoms of the three windings (1), the number of the cross rods (52) is two, the cross rods penetrate through the three fixing blocks (51), the fixing bolts (53) are in threaded connection with the two ends of the cross rods (52), and the mounting foot pieces (54) are two, and are respectively and fixedly connected with the fixing blocks (51) on the left side and the right side through the fixing bolts (53).

7. The fused three-phase voltage transformer for a high-voltage switch cabinet according to claim 1, wherein the secondary terminal (6) comprises a fixing plate and screws, the fixing plate is fixedly connected with the mounting seat (5), and the front surface of the fixing plate is in threaded connection with four screws.