CN205211967U - Join in marriage electric network line maintenance and use ground connection discharge device - Google Patents

Abstract

The utility model discloses a grounding discharge device for circuit inspection and maintenance of a distribution network, which comprises a grounding rod and a grounding wire plug, and the grounding wire plug is threadedly connected with the connecting head of the grounding rod; Contact piece; the T-shaped contact piece is provided with a conductive piece for connecting with the grounding wire. The utility model realizes the grounding of the grounding wire through the threaded connection between the connecting head arranged on the grounding rod and the grounding wire plug. The spring on the T-shaped contact piece can ensure that the T-shaped contact piece is always in close contact with the end face of the connector to ensure good contact. Moreover, the T-shaped contact piece increases the contact area and reduces the grounding resistance. The utility model has good contact, stable connection, no loose phenomenon, reliable grounding, and ensures the safety of operators.

Description

Ground discharge device for maintenance of distribution network lines

technical field

The utility model belongs to the technical field of distribution network line maintenance equipment, in particular to a grounding discharge device for distribution network line maintenance.

Background technique

According to the "Electrical Safety Work Regulations", 10kv power distribution lines and equipment must implement "power outages, power inspections and installation of grounding wires" to ensure safety during power outage maintenance. The grounding wire (that is, the grounding device) is the wire that directly connects the line or equipment to the earth. It can also be called a safety return line.

It is a lifeline for the safety of front-line employees.

At present, the connection between the grounding wire and the grounding rod hung during the power outage maintenance of the distribution line is connected by bolts; according to the requirements of the State Grid Corporation of China on the storage and maintenance of the grounding wire, the grounding rod should be removed every time the grounding wire is used, and separately Sealed storage to avoid corrosion, which makes it time-consuming to install and disassemble the grounding wire during the construction process, and at the same time, the contact area between the grounding rod and the grounding wire is relatively small (only the bolt connection), which makes the grounding resistance of the entire grounding device too large. If the grounding effect is not good, there will be looseness. According to the previous investigation and analysis, the following problems were found: (1) The contact area S between the grounding wire and the grounding rod is small, which makes the grounding resistance too large; (2) It is troublesome and time-consuming to install and disassemble the connecting bolts of the grounding wire; (3) ) The connection method cannot guarantee that the connection between the grounding rod and the grounding wire is reliable every time, and it is prone to loosening.

Such a connection method cannot ensure that the connection between the grounding rod and the grounding wire is reliable every time, and it cannot meet the requirements of the grounding wire "must be in good contact and reliable connection" stipulated in the "Safety Regulations". Therefore, it is very necessary to improve the existing 10 kV grounding wire, effectively reduce the grounding resistance, make it possible to further ensure safe grounding, and at the same time make the connection process simple and firm, ensure the safety of people and equipment, and prevent the occurrence of electric shock casualties. .

Utility model content

Aiming at the deficiencies described in the above prior art, the purpose of this utility model is to provide a grounding discharge device for distribution network line inspection and maintenance, which is easy to install and disassemble, has a large contact area, small grounding resistance, and good and stable contact .

For realizing above-mentioned technical purpose, the technical scheme that the utility model adopts is as follows:

A grounding discharge device for maintenance of distribution network lines, including a grounding rod and a grounding wire plug, the grounding wire plug is threadedly connected to the connecting head of the grounding rod; the grounding wire plug is provided with a T-shaped contact piece in contact with the connecting head; The type contact is provided with a conductive part for connecting with the grounding wire.

The ground wire plug includes a plug body and a T-shaped contact piece, the plug body is provided with an internal thread, the T-shaped contact piece is arranged in the plug body, and one end of the T-shaped contact piece extends outward through the plug body; The T-shaped contact piece inside the main body is provided with a spring, and the T-shaped contact piece outside the plug body is provided with a conductive piece for connecting with the grounding wire.

An external thread matching the internal thread of the plug body is provided on the connecting head.

An insulating layer is provided on the outside of the plug body.

The utility model realizes the grounding of the grounding wire through the threaded connection between the connecting head arranged on the grounding rod and the grounding wire plug. The spring on the T-shaped contact piece can ensure that the T-shaped contact piece is always in close contact with the end face of the connector to ensure good contact. Moreover, the T-shaped contact piece increases the contact area and reduces the grounding resistance. The conductive part realizes the connection with the grounding wire, and the T-shaped contact piece, the connecting head and the grounding rod are all made of conductive materials. The utility model has good contact, stable connection, no loose phenomenon, reliable grounding, and ensures the safety of operators.

Description of drawings

Fig. 1 is the structural representation of the utility model.

detailed description

Embodiment: As shown in FIG. 1 , a grounding discharge device for maintenance of distribution network lines includes a grounding rod 1 and a grounding wire plug 2 . The ground rod 1 is provided with a connecting head 3, and the connecting head 3 is provided with external threads.

The ground wire plug 2 includes a plug body 2-1 and a T-shaped contact piece 2-2, and an insulating layer 6 is provided on the outside of the plug body 2-1. The plug body 2-1 is provided with an internal thread, the T-shaped contact piece 2-2 is arranged in the plug body 2-1, and one end of the T-shaped contact piece 2-2 protrudes outward through the plug body 2-1. The T-shaped contact piece 2-2 inside the plug body 2-1 is provided with a spring 4, and the T-shaped contact piece 2-2 outside the plug body 2-1 is provided with a conductive piece 5 for connecting with a wire.

Installation and use method: connect the ground wire to the T-shaped contact piece 2-2 through the conductive piece 5, twist the plug body 2-1 so that the plug body 2-1 is threaded with the connector 3; the T in the plug body 2-1 The type contact piece 2-2 is always in close contact with the end surface of the connector 3 under the action of the spring. Just insert the ground rod 1 into the ground.

Claims (4)

1. a distribution network line maintenance grounding discharge device, is characterized in that: comprise earth brace (1) and earth connection plug (2), and earth connection plug (2) is threaded with the connector (3) of earth brace (1); The T-type contact element (2-2) contacted with connector (3) is provided with in earth connection plug (2); T-type contact element (2-2) is provided with the electric-conductor (5) for being connected with earth connection.

2. distribution network line maintenance grounding discharge device according to claim 1, it is characterized in that: described earth connection plug (2) comprises header body (2-1) and T-type contact element (2-2), internal thread is provided with in header body (2-1), T-type contact element (2-2) is arranged in header body (2-1), and one end of T-type contact element (2-2) is protruding through header body (2-1); T-type contact element 2-2 in header body 2-1 is provided with spring 4, header body (2-1) T-type contact element outward (2-2) is provided with for the electric-conductor (5) be connected of connecting wires.

3. distribution network line maintenance grounding discharge device according to claim 1 and 2, is characterized in that: on connector (3), be provided with the external screw thread matched with header body (2-1) internal thread.

4. distribution network line maintenance grounding discharge device according to claim 1 and 2, is characterized in that: be provided with insulating barrier (6) in the outside of header body (2-1).