CN103151624A - Connecting clamp of distribution transformer bushing lead screw rod and line wire - Google Patents

Abstract

The invention discloses a connecting clamp of a distribution transformer bushing lead screw rod and a line wire. The connecting clamp comprises a screw rod clamping plate, a long clamping plate and a lead wire pressing plate, wherein the lead screw rod is placed between the screw rod clamping plate and the upper end of the long clamping plate; the two ends of the screw rod clamping plate are fixedly connected with the upper end of the long clamping plate through bolts; the lead wire is placed between the lower end of the long clamping plate and the lead wire pressing plate; and the lower end of the long clamping plate is fixedly connected with the lead wire pressing plate through a bolt. With the adoption of the connecting clamp disclosed by the invention, the heating and burning-out of the connection between the high-voltage and low-voltage bushing lead screw rods of a transformer and the clamp can be reduced, the power failure frequency to a user is reduced, the power supplying reliability is improved, and the enterprise and social benefits are increased.

Description

Distribution transformer bushing lead screw and line wire connection clamp

technical field

The invention relates to a technology for connecting high-voltage and low-voltage bushing lead screws and line wires of distribution transformers, in particular to a new type of clamp used for connecting high-voltage and low-voltage bushing lead screws and line wires of 10-35kV distribution transformers.

Background technique

At present, in order to meet the needs of industrial and agricultural production and people's daily life, the electric power industry is constantly building and developing. Due to the high demand for industrial and agricultural production and people's daily life, distribution transformers in operation are often fully loaded or overloaded. Since the existing distribution transformer high and low voltage bushing lead screw rods are connected to the line wires by a terminal board, the connection point is that the lead wire rods enter the holes on the terminal board and are fastened with bolts, and the holes on the terminal board are smaller than the lead screw rods. Can't get in, the hole on the terminal board is too big and the contact with the lead screw is not tight, the contact area between the terminal board and the lead screw is small, and a large current often flows, the heat between the transformer high and low voltage bushing lead screw and the terminal board is hot. If the transformer is damaged, it will cause a transformer accident and be forced to cut off the power for maintenance, so that the equipment damage rate is high, the power outage time is long, and the power supply reliability is low. If the new type of 10~35kV distribution transformer high and low voltage bushing lead screw and line wire connection clamp can be fully promoted and applied, it can avoid the occurrence of accidents, ensure the power consumption of industrial and agricultural production and people's daily life, and greatly improve the power distribution system. The power supply reliability of the power grid increases the power supply enterprises and social benefits.

Contents of the invention

The purpose of the present invention is to provide a distribution transformer bushing lead screw and line wire connecting clamp, which is scientific and reasonable in design and simple, convenient and reliable in use.

The present invention adopts the following technical scheme: a distribution transformer bushing lead screw and line wire connection clamp, including a screw splint, a long splint, and a line wire pressing plate, and a lead screw is placed between the screw splint and the upper end of the long splint. The two ends of the screw splint are fixedly connected with the upper end of the long splint by bolts, the line wire is placed between the lower end of the long splint and the line wire pressing plate, and the lower end of the long splint is fixedly connected with the line wire pressing plate by bolts.

The long splint is a rectangular copper-aluminum transition plate, the upper end is a copper plate, the lower end is an aluminum plate, and the copper plate and the aluminum plate are welded together; the copper plate has two rows of corresponding installation holes, each row has two installation holes, and two rows There are horizontal circular arc grooves for placing lead screws between the mounting holes, and there are two rows of corresponding mounting holes on the left and right sides of the aluminum plate, each row has three mounting holes, and there is a gap between the two rows of mounting holes for placing line wires. longitudinal arc grooves.

The screw splint is a copper plate splint, and the copper plate splint has four mounting holes, which correspond to the four mounting holes on the copper plate of the long splint, and the two rows of mounting holes of the copper plate splint are used for The arc shape of the lead screw is placed; the lower end of the copper plate splint and the long splint are tightly connected by bolts without gaps, and the upper end of the copper plate splint and the long splint are connected by bolts with a gap.

The line wire pressing plate is a metal plate, and there are three line wire pressing plates. There are mounting holes at both ends of each line wire pressing plate. The mounting holes correspond to the mounting holes on the aluminum plate of the long plywood. There is an arc shape between the two installation holes for placing the line wire, and the line wire pressing plate and the aluminum plate of the long splint are connected without gap by bolts.

The present invention is a new type of clip for connecting the distribution transformer bushing lead screw and the line wire, which is to develop a technology for connecting the distribution transformer and the line wire according to the actual needs of the equipment site. Specifically, the design of the wire clip is reasonable and ideally realized. It ensures the reliable connection between the high and low voltage bushing lead screws of the distribution transformer and the line wires. The specific advantages are as follows:

1. The high and low voltage bushing lead screw of the distribution transformer is connected to the wire clamp of the line wire. The long splint and the lead screw splint are used to clamp the lead screw, so the connection is extremely reliable. The splint and the lead screw increase the contact surface. Enhanced contact pressure and improved contact reliability;

2. The installation and application of this new type of clamp can reduce the heat and burnout between the high and low voltage bushing lead screw and the clamp connection of the transformer, reduce power outages for users, improve power supply reliability, and increase corporate and social benefits;

3. The new type of clamp for connecting the high and low voltage bushing lead screws and line wires of the distribution transformer has a simple structure, scientific and reasonable design, and is simple, convenient and reliable to use;

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a right view structural representation of the middle and long line clamp of the present invention;

Fig. 3 is the right view structural representation of screw clamp in the present invention;

Fig. 4 is a right view structural representation of the circuit conductor pressing plate in the present invention;

Fig. 5 is a schematic top view structural diagram of the circuit conductor pressing plate in the present invention.

Detailed ways

As shown in Figure 1, a distribution transformer bushing lead screw of the present invention is connected to a line wire clamp, including a screw splint 2, a long splint 1, and a line wire pressing plate 31, 32, 33, and the screw splint 2 and the long splint A lead screw 4 is placed between the upper ends of the splint 1, the two ends of the screw splint 2 are fixedly connected to the upper end of the long splint 1 by bolts 61, 62, and the line wires are placed between the lower end of the long splint 1 and the line wire pressing plates 31, 32, 33 5. The lower end of the long splint 1 is fixedly connected to the circuit wire pressing plates 31, 32, 33 by bolts 63, 64, 65.

As shown in Figure 2, the long splint 1 is a rectangular copper-aluminum transition plate, the upper end is a copper plate, the lower end is an aluminum plate, the copper plate and the aluminum plate are welded together, and 7 is a welding line; Mounting holes, two mounting holes in each row, a transverse arc groove 12 for placing the lead screw 4 is arranged between the two rows of mounting holes. A longitudinal circular arc groove 13 for placing line wires is arranged between the two rows of mounting holes. The groove 12 on the long splint is used to protect the lead screw rod 4, and the groove 13 on the long splint is used to protect the line conductor 5, preventing force from causing the lead screw rod 4 and the line conductor 5 to be deformed and damaged when tightening with bolts, and increasing The contact area between the large screw clamp 2 and the lead screw 4 increases the contact area between the circuit conductor pressing plate and the circuit conductor 5, and can carry a large current.

As shown in Figure 3, described screw splint 2 is copper plate splint, and described copper plate splint has four mounting holes, and these four mounting holes correspond to four mounting holes on the copper plate of long splint, and the two rows of copper plate splint The mounting holes are arc-shaped for placing the lead screw; the lower end of the copper plate splint and the long splint are tightly connected without gaps by bolts, and the upper end of the copper plate splint and the long splint 1 are connected by two bolts with a gap, which can be Adjust the bolt 61 to strengthen the tight and reliable connection of the long splint and the screw splint to the lead screw 4.

As shown in Fig. 4 and Fig. 5, the described circuit conductor pressing plates 31, 32, 33 are metal plates, and the two ends of each circuit conducting pressing plate have mounting holes, which correspond to the mounting holes on the aluminum plate of the long plywood, Between the mounting holes of the line conductor pressing plate 31 is an arc shape 8 for placing the line conductor, the line conductor pressing plate 31, 32, 33 and the aluminum plate of the long splint 1 are respectively connected without gaps by six bolts, Three line wire clamps can make the fixing of line wire more compact and stable.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: the present invention can still be Modifications to the specific implementation of the invention or equivalent replacement of some technical features; without departing from the spirit of the technical solution of the present invention, should be included in the scope of the technical solution claimed in the present invention.

Claims (4)

1. sleeve of distribution transformer lead-in wire screw rod and line conductor connecting clamp, it is characterized in that: comprise screw rod clamping plate, long clamping plate, line conductor pressing plate, place the lead-in wire screw rod between described screw rod clamping plate and long clamping plate upper ends, the two ends of screw rod clamping plate are bolted to connection with long clamping plate upper ends, place line conductor between described long clamping plate lower end and line conductor pressing plate, long clamping plate lower end and line conductor pressing plate are bolted to connection.

2. sleeve of distribution transformer according to claim 1 lead-in wire screw rod and line conductor connecting clamp, it is characterized in that: described long clamping plate are rectangle copper to aluminum adapter bar, and the upper end is copper coin, and the lower end is aluminium sheet, copper coin is together with aluminium sheet welds; Installing hole corresponding to up and down two row arranged on described copper coin, two installing holes of every row, be provided with between two row installing holes for the horizontal arc groove of placing the lead-in wire screw rod, left and right two installing holes corresponding to row are arranged on described aluminium sheet, three installing holes of every row are provided with between two row installing holes for the arc groove longitudinally of placing line conductor.

3. sleeve of distribution transformer according to claim 2 lead-in wire screw rod and line conductor connecting clamp, it is characterized in that: described screw rod clamping plate are copper coin clamping plate, described copper coin clamping plate have four installing holes, four installing holes on the copper coin of these four installing holes and long clamping plate are corresponding, between two row installing holes of copper coin clamping plate for being used for placing the circular-arc of lead-in wire screw rod; By the tight seamless connectivity of bolt, be connected by bolt is gapped between the upper end of copper coin clamping plate and long clamping plate between the lower end of copper coin clamping plate and long clamping plate.

4. sleeve of distribution transformer according to claim 3 lead-in wire screw rod and line conductor connecting clamp, it is characterized in that: described line conductor pressing plate is metallic plate, described line conductor pressing plate has three, there is installing hole at the two ends of each line conductor pressing plate, installing hole on the aluminium sheet of this installing hole and long clamping plate is corresponding, between two installing holes of described line conductor pressing plate, for being used for placing the circular-arc of line conductor, the aluminium sheet of described line conductor pressing plate and described long clamping plate is by the bolt seamless connectivity.

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