CN210743732U

CN210743732U - Tray type transformer bushing assembly

Info

Publication number: CN210743732U
Application number: CN201922216469.XU
Authority: CN
Inventors: 李振平; 王阜怀; 宋志永; 孙哲; 孙思璇
Original assignee: Hebei Yachen Electric Co ltd
Current assignee: Hebei Yachen Electric Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-06-12
Anticipated expiration: 2029-12-12

Abstract

The utility model provides a tray type transformer bushing assembly, which comprises an insulating porcelain bottle and a conductive rod penetrating through the insulating porcelain bottle, wherein the upper end of the conductive rod is fixedly connected with a first wiring board, the lower end of the conductive rod is fixedly connected with a second wiring board, and a plurality of wiring terminals are arranged on the first wiring board; the top of the insulating porcelain bottle is sequentially provided with an air release valve, an upper gland and a locking nut from bottom to top, the tail part of the insulating porcelain bottle is clamped with a supporting copper disc, and the supporting copper disc is sleeved outside the conducting rod above the second wiring board; the supporting copper plate consists of a tray, a connecting column and a through hole, wherein the tray is in a disc shape, the connecting column which is convex upwards is arranged in the center of the tray, and the through hole is arranged in the center of the connecting column; the outer diameter of the connecting column is matched with the inner diameter of the tube hole of the insulating porcelain bottle. The utility model provides a tray formula transformer thimble assembly, simple structure, reasonable in design, very big reduction the vase processing degree of difficulty and the installation degree of difficulty, the breakage rate is low, and the suitability is strong.

Description

Tray type transformer bushing assembly

Technical Field

The utility model relates to an equipment field for the transformer specifically, relates to a tray formula transformer thimble assembly.

Background

The transformer bushing assembly is installed at the top of the transformer and comprises a transformer bushing and a conducting rod penetrating through the transformer bushing. The conducting rod is used for connecting an outgoing line and an external line of the transformer winding; the sleeve is a main insulation device outside the transformer box, and the outgoing lines of the transformer winding must penetrate through the insulation sleeve to enable the outgoing lines and the transformer shell to be insulated, and meanwhile, the sleeve plays a role in fixing the outgoing lines. In recent years, accessory products in the manufacturing industry of distribution transformers in China are continuously optimized, and various novel transformer bushing assemblies continuously appear.

At present, in the conventional structure of a 10kv and 20kv conducting rod type transformer bushing assembly, the bottom of a transformer bushing is in clamping connection with the lower end of a conducting rod through a copper disc and a pin, two U-shaped grooves are formed in the tail of an insulating porcelain bottle, and the pin on the copper disc at the bottom of the conducting rod is positioned and installed in the U-shaped grooves to fix the conducting rod and the insulating porcelain bottle.

How to overcome the problems and reduce the difficulty in preparing and installing the transformer bushing becomes a problem which needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model aims at providing a tray transformer thimble assembly.

The technical scheme of the utility model as follows:

a tray type transformer bushing assembly comprises an insulating porcelain bottle and a conducting rod penetrating through the inside of the insulating porcelain bottle, wherein the upper end of the conducting rod is fixedly connected with a first wiring board, the lower end of the conducting rod is fixedly connected with a second wiring board, and a plurality of wiring terminals are arranged on the first wiring board; the top of the insulating porcelain bottle is sequentially provided with an air release valve, an upper gland and a locking nut from bottom to top, the tail part of the insulating porcelain bottle is clamped with a supporting copper disc, and the supporting copper disc is sleeved outside the conducting rod above the second wiring board;

the supporting copper plate consists of a tray, a connecting column and a through hole, wherein the tray is in a disc shape, the connecting column which is convex upwards is arranged in the center of the tray, and the through hole is arranged in the center of the connecting column; the outer diameter of the connecting column is matched with the inner diameter of the tube hole of the insulating porcelain bottle.

The utility model discloses a further improvement lies in: the outer side of the bottom of the connecting column is also provided with an auxiliary inserted bevel opening.

The utility model discloses a further improvement lies in: the height of the connecting column is not less than 2 cm.

The utility model discloses a further improvement lies in: the upper gland is a metal gland, preferably a copper gland or an aluminum gland.

The utility model discloses a further improvement lies in: the connecting terminal is a red copper connecting terminal.

The utility model discloses a further improvement lies in: the lower part of the porcelain insulator is also provided with a pressing seat, and the pressing seat is arranged in a clamping groove in the outer wall of the porcelain insulator and is fixedly connected with a lower pressing plate through a plurality of pins.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a tray formula transformer thimble assembly, simple structure, reasonable in design, very big reduction the vase processing degree of difficulty and the installation degree of difficulty, the breakage rate is low, and the suitability is strong.

The utility model changes the clamping type of the copper disc pin of the transformer sleeve and the conducting rod into the protruding copper disc supporting type, and the tail part of the porcelain bottle does not need to process a U-shaped groove, thereby simplifying the processing technique of the porcelain bottle, greatly reducing the processing difficulty and the processing cost and improving the working efficiency; the weak point of the porcelain bottle is eliminated, and the breakage rate of the porcelain bottle is obviously improved; meanwhile, the position between the supporting copper disc and the insulating porcelain bottle is not fixed, the plug-in type relative flexibility is high, the conducting rod can rotate freely relative to the porcelain bottle, the connection and installation of the tail terminal of the sleeve and the conducting bar in the transformer are convenient and flexible, and the installation difficulty is greatly reduced.

The connecting terminal at the top of the sleeve body adopts the red copper connecting terminal made of red copper, so that the electric conductivity is better and the anti-corrosion performance is better compared with the traditional brass connecting terminal; the utility model discloses replace the porcelain gland originally for metal gland to preferably copper gland or aluminum gland, greatly reduced the spoilage, prolonged the life of product.

Drawings

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

FIG. 2 is a schematic structural view of a copper tray;

in the figure, 1-an insulating porcelain bottle, 2-a conducting rod, 3-a first wiring board, 31-a wiring terminal, 32-a first mounting hole, 4-a second wiring board, 41-a second mounting hole, 5-a vent valve, 6-an upper gland, 7-a locking nut, 8-a lower pressing seat, 81-a lower pressing plate, 82-a pin, 9-a supporting copper plate, 91-a tray, 92-a connecting column, 93-a via hole, 94-an oblique opening and 10-a rubber ring.

Detailed Description

The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.

A tray type transformer bushing assembly is shown in figure 1 and comprises an insulating porcelain bottle 1 and a conducting rod 2 penetrating through the inside of the insulating porcelain bottle 1. The upper end of the conducting rod 2 is fixedly connected with a first wiring board 3, and a plurality of wiring terminals 31 are arranged on the first wiring board 3 and are used for being connected with external wires; the lower end of the conducting rod 2 is fixedly connected with a second wiring board 4 which is used for being connected with an outgoing line of a transformer winding.

The top of the insulating porcelain insulator 1 is sequentially provided with a release valve 5, an upper gland 6 and a locking nut 7 from bottom to top, and the first wiring board 3 is positioned above the locking nut 7. The lower part of insulating vase 1 is equipped with down and presses seat 8, presses seat 8 to arrange the draw-in groove of insulating vase 1 outer wall in, through several pin 82 and holding down plate 81 fixed connection. The tail of the insulating porcelain bottle 1 is clamped with a supporting copper disc 9, and the supporting copper disc 9 is sleeved outside the conducting rod 2 above the second wiring board 4 and used for fixing the conducting rod 2 and the insulating porcelain bottle 1.

As shown in fig. 2, the supporting copper plate 9 is in a "convex" structure and comprises a tray 91, a connecting column 92 and a through hole 93, the tray 91 is in a disc structure, the connecting column 92 protruding upwards is arranged in the center of the tray 91, and the through hole 93 is arranged in the center of the connecting column 92; the inner diameter of the through hole 93 is larger than the outer diameter of the conducting rod 2, and the conducting rod 2 penetrates through the through hole 93 and then is connected with the first wiring board 3; the outer diameter of the connecting column 92 is matched with the inner diameter of the tube hole of the porcelain insulator 1, and the connecting column 92 can be inserted into the tube hole of the porcelain insulator 1.

Preferably, the bottom outer side of the connecting column 92 is provided with an inclined opening 94 for facilitating smooth insertion of the porcelain insulator 1.

Preferably, the height of the connecting column 92 is not less than 2cm, so that the stable insertion of the connecting column and the porcelain insulator can be ensured.

The connecting terminal 31 is a red copper connecting terminal 31, has better conductivity and better corrosion resistance, and can be suitable for various different environments.

The upper gland 6 is a metal gland, preferably a copper gland or an aluminum gland; the metal gland has good ductility and workable type, and is difficult damaged, can solve the easy damaged problem of original porcelain gland.

And a rubber ring 10 for enhancing the sealing property is arranged between the air release valve 5 and the upper gland 6.

Two first mounting holes 32 are formed in the first wiring board 3, four second mounting holes 41 are formed in the second wiring board 4, and the first mounting holes 32 and the second mounting holes 41 are identical in diameter, so that interchangeability and universality of parts are improved.

The utility model discloses an installation does:

the transformer bushing assembly is transported to a working site, workers connect various transmission lines and grounding wires with the transformer bushing assembly, and then the transformer bushing is fixed above the transformer and fastened; after the installation is completed, the transformer bushing is regularly subjected to safety detection, so that safety problems are prevented.

The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention.

Claims

1. A tray transformer bushing assembly characterized in that: the conductive wire connecting device comprises an insulating porcelain bottle (1) and a conductive rod (2) penetrating through the insulating porcelain bottle (1), wherein the upper end of the conductive rod (2) is fixedly connected with a first wiring board (3), the lower end of the conductive rod is fixedly connected with a second wiring board (4), and a plurality of wiring terminals (31) are arranged on the first wiring board (3); the top of the insulating porcelain bottle (1) is sequentially provided with an air release valve (5), an upper gland (6) and a locking nut (7) from bottom to top, the tail part of the insulating porcelain bottle (1) is clamped with a supporting copper disc (9), and the supporting copper disc (9) is sleeved outside the conducting rod (2) above the second wiring board (4);

the copper tray (9) consists of a tray (91), a connecting column (92) and a through hole (93), wherein the tray (91) is disc-shaped, the connecting column (92) protruding upwards is arranged in the center of the tray (91), and the through hole (93) is arranged in the center of the connecting column (92); the outer diameter of the connecting column (92) is matched with the inner diameter of the tube hole of the insulating porcelain bottle (1).

2. The tray transformer bushing assembly of claim 1, wherein: the outer side of the bottom of the connecting column (92) is also provided with an auxiliary inserted bevel opening (94).

3. The tray transformer bushing assembly of claim 1, wherein: the height of the connecting column (92) is not less than 2 cm.

4. The tray transformer bushing assembly of claim 1, wherein: the upper gland (6) is a metal gland.

5. The tray transformer bushing assembly of claim 4, wherein: the upper gland (6) is a copper gland or an aluminum gland.

6. The tray transformer bushing assembly of claim 1, wherein: the connecting terminal (31) is a red copper connecting terminal.

7. The tray transformer bushing assembly of claim 1, wherein: the lower part of the insulating porcelain bottle (1) is further provided with a pressing base (8), the pressing base (8) is arranged in a clamping groove in the outer wall of the insulating porcelain bottle (1) and is fixedly connected with a pressing plate (81) through a plurality of pins (82).