CN204045755U - A kind of copper-aluminium transition connector fixed for transformer pile head and aluminum conductor - Google Patents

Abstract

The utility model relates to a kind of copper-aluminium transition connector fixed for transformer pile head and aluminum conductor, compared with prior art solves the defect of the copper-aluminium transition connector not being applicable to plurality of specifications pile crown.The utility model also comprises copper sheet (3) and aluminium flake (4), copper sheet (3) and aluminium flake (4) are horizontally welded together, aluminium flake (4) is installed with aluminum steel fixed mount (5), aluminum steel fixed mount (5) is provided with aluminum steel support (6), aluminum steel support (6) is provided with aluminum steel mount pad (7), reinforcing copper coin (8) is positioned at copper sheet (3) and aluminium flake (4) is gone up and fixedly mounted by bolt (10) and aluminium flake (4), reinforce on copper coin (8) and copper sheet (3) and be jointly provided with pile crown installing hole (9), reinforcing copper coin (8) and copper sheet (3) are contained on pile crown (2) by pile crown installing hole (9).The pile crown that the utility model goes for any specification uses, and can connect multichannel aluminum steel.

Description

A copper-aluminum transition connector for fixing transformer pile heads and aluminum conductors

technical field

The utility model relates to the technical field of transformers, in particular to a copper-aluminum transition connector used for fixing transformer pile heads and aluminum conductors.

Background technique

In recent years, the connection of the transformer pile head has been a controversial issue in the industry. As shown in Figure 1, the pile head 2 is located on the upper part of the transformer 1 and is used for connecting wires. The material of the pile head 2 is copper, and the most ideal external connecting wire is to adopt a copper wire, which is directly connected to the pile head 2 using the copper wire. However, copper wires are heavy and expensive, and their use in overhead lines not only has the problem of high cost, but also has the problem of transformer support caused by the weight of copper wires. Aluminum conductors are light in weight and cheap in price. Even if it is recognized that aluminum and copper are generally not directly connected, aluminum conductors are mostly used to connect to the pile head 2 in overhead lines. At present, there are many connection methods between copper and aluminum, mainly as follows:

1. It is more commonly used to directly weld the copper-aluminum contact surface, but this welding technique requires high requirements, and it is difficult for ordinary electric maintenance personnel to master. At the same time, the two metals, copper and aluminum, have different thermal expansion coefficients and are not easy to combine. In actual use, it is easy to cause fractures caused by the temperature rise of the transformer. The later maintenance is very troublesome. It is extremely inconvenient to find a way to perform electric welding again in an environment without electricity;

2. Connect through a certain copper-aluminum transition clamp, for example, the patent number is 200820030008, the name is distribution transformer pile head clamp, which discloses a pile head clamp. But this connection technology has the following defects: A, the scope of application is narrow, and different types of pile head clamps will be used for different types of pile heads, which is extremely unsuitable for actual maintenance operations in the power industry; B, pile heads are all installed in The pile head wire clamp is not suitable for later inspection and maintenance of the pile head; C, the number of aluminum wires connected is limited, and only one aluminum wire can be connected in the pile head wire clip. Even try to connect a plurality of aluminum conductors into the pile head wire clip together, but the maintenance of the aluminum conductors in the later stage is particularly troublesome. All aluminum conductors must be removed to repair and replace, and the practical application value is not high.

How to develop a connector that is convenient for maintenance and applicable to pile heads of various specifications has become a technical problem that needs to be solved urgently.

Utility model content

The purpose of this utility model is to solve the defect in the prior art that there are no copper-aluminum transition connectors suitable for pile heads of various specifications, and to provide a copper-aluminum transition connector for fixing transformer pile heads and aluminum wires to solve the above-mentioned problems. question.

In order to achieve the above object, the technical scheme of the utility model is as follows:

A copper-aluminum transition piece for fixing the transformer pile head and the aluminum wire, including the transformer and the pile head arranged on the transformer, and also includes copper sheets and aluminum sheets, the copper sheets and the aluminum sheets are welded together horizontally, and fixed on the aluminum sheets An aluminum wire fixing frame is installed, an aluminum wire bracket is installed on the aluminum wire fixing frame, an aluminum wire mounting seat is installed on the aluminum wire bracket, the reinforced copper plate is located on the copper sheet and the aluminum sheet and is fixed and installed by bolts and the aluminum sheet, and the copper plate and the copper sheet are reinforced. A pile head installation hole is arranged on the sheet, and the reinforced copper plate and the copper sheet are mounted on the pile head through the pile head installation hole.

The aluminum wire mounting seat is a screw, and the material of the screw is aluminum.

The number of the aluminum wire supports is 2.

The number of said aluminum wire mounting bases is 2.

Beneficial effect

Compared with the prior art, the utility model relates to a copper-aluminum transition connector used for fixing the transformer pile head and the aluminum wire, which can be used for pile heads of any specifications and can be connected with multiple aluminum wires. Through the design of the reinforced copper plate, it can not only play the role of physical reinforcement, avoid the fracture of the copper-aluminum welding place due to high temperature, but also increase the conductivity of the copper-aluminum transition connector. Through the design of installing the aluminum wire bracket on the aluminum wire fixing frame, multiple aluminum wires can be connected and the maintenance is convenient. The utility model has the characteristics of simple structure, convenience and practicality, and wide application range.

Description of drawings

Fig. 1 is the structural representation of transformer in the prior art

Fig. 2 is a structural top view of the utility model

Fig. 3 is the structural front view of the utility model

Among them, 1-transformer, 2-pile head, 3-copper sheet, 4-aluminum sheet, 5-aluminum wire fixing frame, 6-aluminum wire bracket, 7-aluminum wire mounting seat, 8-reinforced copper plate, 9-pile head Mounting holes, 10-bolt.

Detailed ways

In order to have a further understanding and understanding of the structural features and the achieved effects of the utility model, a detailed description is provided in conjunction with preferred embodiments and accompanying drawings, as follows:

As shown in Figure 2 and Figure 3, a copper-aluminum transition connector for fixing the transformer pile head and aluminum wire according to the utility model, as shown in Figure 1, includes a transformer 1 and a pile on the transformer 1 Head 2, according to the power and load of transformer 1, there are certain differences in the model of pile head 2. It also includes a copper sheet 3 and an aluminum sheet 4, the copper sheet 3 and the aluminum sheet 4 are horizontally welded together, the copper sheet 3 is used for the connection of the pile head 2, and the aluminum sheet 4 is used for the connection of the aluminum wire. An aluminum wire fixing frame 5 is fixedly installed on the aluminum sheet 4, and the aluminum wire fixing frame 5 can be installed on the aluminum sheet 4 in various ways. Aluminum wire support 6 is installed on the aluminum wire fixing frame 5, and aluminum wire support 6 can be 2, also can be a plurality of, according to the needs of aluminum wire, install additionally and get final product. An aluminum wire mounting seat 7 is installed on the aluminum wire support 6, and the aluminum wire mounting seat 7 is used for installing the aluminum wire lug. According to needs, the number of aluminum wire mounting bases 7 can be two. The aluminum wire mounting seat 7 can be a screw directly, and the material of the screw is better aluminum, and the screw is directly passed on the aluminum wire support 6, and the aluminum wire lug can be directly inserted on the screw. The reinforced copper plate 8 is located on the copper sheet 3 and the aluminum sheet 4 and is fixedly installed with the aluminum sheet 4 by bolts 10. The reinforced copper plate 8 and the copper sheet 3 are provided with pile head installation holes 9 together, and the reinforced copper plate 8 and the copper sheet 3 pass through the pile head Mounting hole 9 is contained on the pile head 2. Reinforced copper plate 8 and copper sheet 3 are set on the pile head 2 through the pile head installation hole 9, and then fixed with nuts. The installation in this way can not only be applied to the installation needs of pile heads 2 of various specifications, but also the pile head 2 is exposed Outside, it is convenient for later maintenance work. One end of the reinforced copper plate 8 is fixedly installed with the aluminum sheet 4 through the bolt 10, and the other end is installed on the pile head 2 through the pile head installation hole 9, which plays a role of physical reinforcement, avoids the fracture of the copper-aluminum welding place due to high temperature, and at the same time Increased electrical conductivity of copper-aluminum transition connectors.

During actual use, the reinforced copper plate 8 and the copper sheet 3 are sleeved on the pile head 2 through the pile head mounting hole 9, then fixed with a nut, and then the wire lug of the aluminum wire is inserted on the aluminum wire mounting seat 7 and fixed. When the temperature of the transformer rises, the horizontal weld of the copper sheet 3 and the aluminum sheet 4 expands due to heat, and the reinforcing copper sheet 8 stretches both to limit the position and prevent fracture. When multiple aluminum wires need to be installed, the aluminum wire support 6 can be installed on the aluminum wire fixing frame 5 as required.

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions describe only the principle of the utility model. There will be various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The protection scope required by the utility model is defined by the appended claims and their equivalents. the

Claims (4)

1. the copper-aluminium transition connector fixed for transformer pile head and aluminum conductor, comprise transformer (1) and be located at the pile crown (2) on transformer (1), it is characterized in that: also comprise copper sheet (3) and aluminium flake (4), copper sheet (3) and aluminium flake (4) are horizontally welded together, aluminium flake (4) is installed with aluminum steel fixed mount (5), aluminum steel fixed mount (5) is provided with aluminum steel support (6), aluminum steel support (6) is provided with aluminum steel mount pad (7), reinforcing copper coin (8) is positioned at copper sheet (3) and aluminium flake (4) is gone up and fixedly mounted by bolt (10) and aluminium flake (4), reinforce on copper coin (8) and copper sheet (3) and be jointly provided with pile crown installing hole (9), reinforcing copper coin (8) and copper sheet (3) are contained on pile crown (2) by pile crown installing hole (9).

2. a kind of copper-aluminium transition connector fixed for transformer pile head and aluminum conductor according to claim 1, it is characterized in that: described aluminum steel mount pad (7) is screw, the material of screw is aluminium.

3. a kind of copper-aluminium transition connector fixed for transformer pile head and aluminum conductor according to claim 1, is characterized in that: the quantity of described aluminum steel support (6) is 2.

4. a kind of copper-aluminium transition connector fixed for transformer pile head and aluminum conductor according to claim 1, is characterized in that: the quantity of described aluminum steel mount pad (7) is 2.