CN104092032A - 10kV drop switch grounding connection rod - Google Patents

Abstract

The invention relates to a grounding device for distribution transformer maintenance, in particular to a 10kV drop switch grounding connecting rod. It solves the technical problem that the grounding wire cannot be connected during the maintenance operation because the distribution transformer is not installed with the grounding ring. A 10kV drop switch grounding link, including an L-shaped contact plate, two connection holes are vertically opened on the horizontal section of the contact plate, and a corner of the contact plate is fixed with a horizontal section and a vertical section of the contact plate. Parallel articulated shafts; both ends of the articulated shaft protrude from the contact plate; an operation tube is fixed at the front end of the horizontal section of the contact plate; the axis of the operation tube is parallel to the axis of the articulated shaft. The device is used in the inspection and maintenance of distribution transformers, which is easy to operate, convenient to carry, and low in cost, and can meet the problem that the grounding wire cannot be connected during the operation of the transformer.

Description

10kV drop switch grounding link

technical field

The invention relates to a grounding device for distribution transformer maintenance, in particular to a 10kV drop switch grounding connecting rod.

Background technique

In the replacement or repair of distribution transformers (especially 10KV), a set of grounding wires must be connected to the high-voltage side lead wire after the drop switch is opened. However, in the actual work site, most distribution transformers do not have grounding rings installed. There is a problem that the other part of the lead wire is connected to the ground wire, and the connection line is an insulated wire that cannot be connected, or there is a problem that the ground wire cannot be connected firmly around the arrester. Personal safety cannot be guaranteed, and the grounding wire installed after the failure of the insulation breakdown of the drop switch will not be able to guarantee the safety of personnel, and personal electric shock accidents are extremely prone to occur. Therefore need a kind of device that can be applicable to the overhaul operation of the ring distribution transformer that does not install connection.

Contents of the invention

The present invention provides a 10kV drop switch grounding link in order to solve the technical problem that the grounding wire cannot be connected during the maintenance operation due to the fact that the current distribution transformer is not installed with the grounding ring.

The present invention is realized by adopting the following technical scheme: a 10kV drop switch grounding link, including an L-shaped contact plate, two connection holes are vertically opened on the horizontal section of the contact plate, and the corners of the contact plate are fixed with An articulated shaft parallel to the horizontal section and the vertical section of the contact plate; the two ends of the articulated shaft protrude from the contact plate; the front end of the horizontal section of the contact plate is fixed with an operating tube; the axis of the operating tube is connected to the articulated shaft axis parallel.

The contact plate is responsible for contacting the lower contact of the drop switch, the hook shaft is responsible for suspending the ground wire to the slot of the lower support of the drop switch, and plays the role of supporting rotation, the connection hole is responsible for connecting the nose of the ground wire, and the operation tube (hole) is responsible for Brake lever operation.

When using the present invention, after removing the shorting rod from the 10kV grounding wire, connect the 3 front copper wire noses of the grounding wire to the connection hole, and then follow the installation sequence of the grounding wire, first connect the grounding end, and then connect the 10kV insulating rod (brake lever ) The crossbar at the beginning of "up" penetrates through the operation tube (hole), put the hook shaft into the slot of the lower support of the drop switch, and the contact plate is in close contact with the lower contact of the drop switch under the action of the gravity of the ground wire. To achieve the purpose of grounding.

Beneficial effects of the present invention: the device is used in the maintenance of distribution transformers, which is easy to operate, convenient to carry, and low in cost, and can meet the problem that the grounding wire cannot be connected during the operation of the transformer.

The present invention can be used for matching use of various drop switches hooked with grounding wires.

The invention belongs to the detachable device, and one power supply station is equipped with five sets to meet the daily needs, thereby reducing the production cost.

Description of drawings

Fig. 1 is a schematic diagram of the front view structure of the present invention.

Fig. 2 is a schematic top view of the structure of the present invention.

Fig. 3 is a schematic diagram of the three-dimensional structure of the present invention.

1-contact plate, 2-connection hole, 3-hitch shaft, 4-operating tube.

Detailed ways

A 10kV drop switch grounding link, including an L-shaped contact plate 1, two connection holes 2 are vertically opened on the horizontal section of the contact plate 1, and the corner of the contact plate 1 (that is, the connection between the horizontal section and the vertical section) inside) is fixed with a articulated shaft 3 parallel to the horizontal section and the vertical section of the contact plate 1; both ends of the articulated shaft 3 protrude from the contact plate 1; 4; The axis of the operation tube 4 is parallel to the axis of the articulated shaft 3 .

The centers of the two connection holes 2 are located on the connection line between the front and rear ends of the horizontal section of the contact plate 1 .

The diameter of the connecting hole 2 is 10.2 mm; the inner diameter of the operating tube 4 is 13.6 mm; the diameter of the articulated shaft 3 is 6.8 mm.

The diameter of the connecting hole 2 is conducive to the installation of the grounding wire. The inner diameter of the operating tube 4 can be matched with the brake lever. The hook shaft 3 is matched with the groove on the contact base of the drop switch. The terminal can be placed in the groove of the base, so that the whole device can be in close contact with the lower contact to ensure the grounding effect.

It can be seen from Fig. 1 and Fig. 3 that the contact plate 1 is L-shaped, the length of the horizontal section is generally longer than that of the vertical section, and the articulated shaft 3 is parallel to the operating tube 4; on-line.

Claims (3)

1. A grounding link for a 10kV drop switch, characterized in that it includes an L-shaped contact plate (1), two connection holes (2) are vertically opened on the horizontal section of the contact plate (1), and the contact plate The corner of (1) is fixed with a articulated shaft (3) parallel to the horizontal section and the vertical section of the contact plate (1); the two ends of the articulated shaft (3) protrude from the contact plate (1); the contact An operating tube (4) is fixed at the front end of the horizontal section of the plate (1); the axis of the operating tube (4) is parallel to the axis of the articulated shaft (3). 2. The 10kV drop switch grounding link according to claim 1, characterized in that, the centers of the two connection holes (2) are located on the connection line between the front and rear ends of the horizontal section of the contact plate (1). 3. The 10kV drop switch grounding link according to claim 1 or 2, characterized in that the diameter of the connecting hole (2) is 10.2mm; the inner diameter of the operating tube (4) is 13.6mm; the diameter of the articulated shaft (3) is 6.8mm.