CN203983531U - 10kV drop switch ground connection connecting rod - Google Patents

Abstract

The utility model 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 utility model 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 because the insulated wire cannot be connected, or the ground wire around the arrester cannot be connected firmly. In this way, it is difficult for the staff to work under the distribution transformer without the grounding ring. 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 utility model provides a 10kV drop switch grounding link in order to solve the technical problem that the grounding wire cannot be connected during maintenance operations due to the fact that the current distribution transformer is not installed with a grounding ring.

The utility model is realized by adopting the following technical scheme: a 10kV drop switch grounding connecting rod, 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 There is an articulation shaft parallel to the horizontal section and the vertical section of the contact plate; the two ends of the articulation shaft protrude from the contact plate; an operation tube is fixed on the front end of the horizontal section of the contact plate; 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 the utility model is in use, after the 10kV grounding wire is removed from the shorting rod, the 3 front copper wire noses of the grounding wire are connected to the connection hole, and then according to the installation sequence of the grounding wire, the grounding terminal is first connected, and then the 10kV insulating rod (pull-up Rod) The cross bar with the word "upper" 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 utility model: the device is used in the inspection and maintenance of the distribution transformer, 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 utility model can be used for matching use of various drop switches and grounding wires.

The utility model belongs to a detachable device, and one power supply station is equipped with five sets to meet daily needs, thereby reducing production costs.

Description of drawings

Fig. 1 is a schematic view of the front view structure of the utility model.

Fig. 2 is a schematic diagram of the top view structure of the utility model.

Fig. 3 is a schematic diagram of the three-dimensional structure of the utility model.

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 10kV drop switch ground connection connecting rod, it is characterized in that, comprise a contact plate (1) that is L-type, on the horizontal segment of contact plate (1), vertically have two connecting holes (2), the corner of contact plate (1) be fixed with one with contact plate (1) horizontal segment and vertical section parallel hitching axis (3) all; Contact plate (1) is stretched out at the two ends of described hitching axis (3); The front end of contact plate (1) horizontal segment is fixed with an operation pipe (4); Described operation pipe (4) axis is parallel with hitching axis (3) axis.

2. 10kV drop switch ground connection connecting rod as claimed in claim 1, is characterized in that, on the front and back end line of centres that is centered close to contact plate (1) horizontal segment part of described two connecting holes (2).

3. 10kV drop switch ground connection connecting rod as claimed in claim 1 or 2, the aperture that it is characterized in that connecting hole (2) is 10.2mm; Operation pipe (4) internal diameter is 13.6mm; Hitching axis (3) diameter is 6.8mm.