CN211126135U

CN211126135U - Device for grounding multiple overhead lines

Info

Publication number: CN211126135U
Application number: CN201921920967.6U
Authority: CN
Inventors: 黄晓巍; 黄海泉; 沈泉; 洪伟; 王振东
Original assignee: Dafeng Longsheng Industrial Co ltd; Electric Power Research Institute of State Grid Liaoning Electric Power Co Ltd; Yancheng Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Dafeng Longsheng Industrial Co ltd; Electric Power Research Institute of State Grid Liaoning Electric Power Co Ltd; Yancheng Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-28
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a device for many overhead line ground connection, including conducting rod, connect electrical end, hookup switch, control box and earthing terminal, connect electrical end to fix the upper end at the conducting rod, the conducting rod is fixed in the control box upper end, hookup switch fixes on the control box, the earthing terminal is fixed at the lower extreme of control box, the controller has been fixed on the control box, and the internally mounted of control box has a plurality of auxiliary relay, conducting wire row and induction-current sensor, auxiliary relay includes coil contact and normally open contact. The grounding device can simultaneously ground the same overhead line, and detects whether current exists in the overhead line through the controller. And the controller has an alarm function, and if the controller detects that the overhead line has current, the controller gives an alarm to protect the life safety of the maintainers.

Description

Device for grounding multiple overhead lines

Technical Field

The utility model belongs to the technical field of electric power, a device for many overhead lines ground connection is related to.

Background

At present, most of distribution network lines in an electric power system adopt overhead exposed insulated wires, and the overhead lines need to be grounded when being overhauled. Among the prior art, overhead line uses single earthing rod to ground connection usually, if when same overhead line needs ground connection simultaneously, then needs many earthing device ground connection simultaneously, and the operation is more loaded down with trivial details, so need develop a device that acts on many overhead line ground connection simultaneously for solve above-mentioned problem, protection maintainer's life safety.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model relates to a device for many overhead lines ground connection, this earthing device can be to the overhead line ground connection simultaneously of same row, detect whether there is the electric current in the overhead line through the controller. And the controller has an alarm function, and if the controller detects that the overhead line has current, the controller gives an alarm to protect the life safety of the maintainers.

The utility model provides a device for many overhead line ground connection, including conducting rod, connect electrical end, hookup switch, control box and earthing terminal, connect electrical end to fix the upper end at the conducting rod, the conducting rod is fixed in the control box upper end, hookup switch fixes on the control box, the earthing terminal is fixed at the lower extreme of control box, the controller has been fixed on the control box, and the internally mounted of control box has a plurality of auxiliary relay, conducting wire row and induction-current sensor, auxiliary relay includes coil contact and normally open contact.

And the power connection end is further provided with four contact barbs, the inside of the power connection end is provided with four wires, and the contact barbs are respectively connected with the four wires.

The upper end and the lower end of the conducting rod are respectively provided with four line connecting ports, four wires are arranged in the conducting rod, the four wires in the conducting rod are used for connecting the four line connecting ports at the upper end and the lower end of the conducting rod, and the four line connecting ports at the upper end of the conducting rod are respectively connected with the four wires in the electric connecting end.

The controller further comprises a power input end, a digital output end and an analog detection port, the controller has a voice alarm function, the power input end is connected with a 220V alternating current power supply, the digital output end is connected with a normally open contact of an intermediate relay in the control cabinet through a connecting wire, and the analog detection port can detect an electric signal in the induction current sensor.

The conducting circuit row further comprises four power connection ports, four conducting connection rods and four connection ports, the four conducting rods are respectively connected to the four power connection ports and the four connection ports, the four power connection ports are respectively connected with the four circuit connection ports at the lower ends of the conducting rods through connection wires, the four connection ports are connected with one ends of normally open contacts of the four intermediate relays through the connection wires, and the other ends of the normally open contacts are connected with the grounding end through the connection wires.

The four groups of induced current sensors are respectively arranged on the four conductive connecting rods of the conductive circuit row, and each induced current sensor comprises a detection port which is connected with the analog detection port of the controller through a connecting wire.

The connecting switches are further four groups and are arranged on a box door of the control box, two sides of the switches are connected with a digital quantity input port of the controller through connecting wires, and the connecting switches control the actuation of the intermediate relay through the controller.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a device for grounding a plurality of overhead lines according to the present invention.

In the figure: 1. a conductive rod; 2. connecting the electric terminal; 3. a connection switch; 4. a control box; 5. a ground terminal; 6. a controller; 7. an intermediate relay; 8. an induced current sensor; 9. and (6) arranging the conductive circuits.

Detailed Description

The following describes in detail a specific embodiment of the present invention, which is used for grounding a plurality of overhead lines, with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides a device for many overhead line ground connection, including conducting rod 1, connect electrical terminal 2, hookup switch 3, control box 4 and earthing terminal 5, connect electrical terminal 2 to fix in the upper end of conducting rod 1, conducting rod 1 is fixed in control box 4 upper end, hookup switch 3 is fixed on control box 4, earthing terminal 5 is fixed at the lower extreme of control box 4, controller 6 has been fixed on control box 4, and a plurality of auxiliary relay 7, conducting wire row 9 and inductive-current sensor 8 have been installed to control box 4's internally mounted, auxiliary relay 7 includes coil contact and normally open contact.

The working principle of the device for grounding a plurality of overhead lines is as follows: the grounding end 5 is fixed on the ground, the four contact barbs of the electric connection end 2 are respectively fixed on the four overhead lines, and the connection switch 3 of the overhead line to be grounded is closed on the control box 4. After the connection switch 3 is closed, the digital input port of the controller 6 detects the closing information of the connection switch 3, the coil of the intermediate relay 7 corresponding to the overhead line to be grounded is conducted, the normally open contact of the intermediate relay 7 is closed, and the overhead line is connected with the grounding end 5. When the overhead line is powered on, the induction current sensor 8 detects the electric signal and sends out a voice alarm to prompt the overhead line to be powered on. When the overhead line is not needed to be grounded, the connecting switch 3 corresponding to the overhead line is released, after the controller 6 receives a releasing signal of the connecting switch 3, the coil of the corresponding intermediate relay 7 is powered off, the normally open contact of the intermediate relay 7 is disconnected, and the overhead line is disconnected from the ground.

According to the above, the electric connection end 2 is provided with four contact barbs, the inside of the electric connection end is provided with four wires, and the contact barbs are respectively connected with the four wires.

According to the above, the upper end and the lower end of the conducting rod 1 are respectively provided with four line connecting ports, four wires are arranged inside the conducting rod 1, the four wires inside the conducting rod 1 connect the four line connecting ports at the upper end and the lower end of the conducting rod 1, and the four line connecting ports at the upper end of the conducting rod 1 are respectively connected with the four wires in the electric connection end 2.

According to the above, the controller 6 comprises a power input end, a digital output end and an analog detection port, the controller 6 has a voice alarm function, the power input end is connected to a 220V alternating current power supply, the digital output end is connected to a normally open contact of an intermediate relay 7 in the control cabinet through a connecting wire, and the analog detection port can detect an electric signal in the induction current sensor 8.

According to the above, the conductive circuit line 9 includes four power connection ports, four conductive connection rods, and four connection ports, the four conductive rods 1 are respectively connected to the four power connection ports and the four connection ports, the four power connection ports are respectively connected to the four line connection ports at the lower end of the conductive rods 1 through connection lines, the four connection ports are connected to one ends of normally open contacts of the four intermediate relays 7 through the connection lines, and the other ends of the normally open contacts are connected to the ground terminal 5 through the connection lines.

According to the above, the inductive current sensors 8 are four groups and are respectively mounted on the four conductive connecting rods of the conductive circuit row 9, and the inductive current sensors 8 comprise detection ports which are connected with the analog detection ports of the controller 6 through connecting wires.

According to the above, the four groups of the connection switches 3 are arranged on the box door of the control box 4, two sides of the switches are connected with the digital input port of the controller 6 through the connecting wire, and the connection switches 3 control the attraction of the intermediate relay 7 through the controller 6.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention and not to limit the same. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. The utility model provides a device for ground connection of many overhead lines, its characterized in that includes conducting rod, connects electrical end, hookup switch, control box and earthing terminal, connect electrical end and fix the upper end at the conducting rod, the conducting rod is fixed in the control box upper end, hookup switch fixes on the control box, the earthing terminal is fixed at the lower extreme of control box, the controller has been fixed on the control box, and the internally mounted of control box has a plurality of auxiliary relay, conducting wire row and induced-current sensor, auxiliary relay includes coil contact and normally open contact.

2. The apparatus of claim 1, wherein the power connection end has four contact barbs thereon, and four conductors therein, and the contact barbs are connected to the four conductors.

3. The apparatus of claim 1, wherein the upper and lower ends of the conductive rod each have four line connection ports, and the conductive rod has four wires inside, the four wires inside the conductive rod connect the four line connection ports at the upper and lower ends of the conductive rod, and the four line connection ports at the upper end of the conductive rod are connected to the four wires inside the electrical connection end, respectively.

4. The device for grounding a plurality of overhead lines according to claim 1, wherein the controller comprises a power input end, a digital output end and an analog detection port, the controller has a voice alarm function, the power input end is connected to a 220V alternating current power supply, the digital output end is connected with a normally open contact of an intermediate relay in the control cabinet through a connecting wire, and the analog detection port can detect an electric signal in an induced current sensor.

5. The device for grounding a plurality of overhead lines according to claim 1, wherein the conductive line bank comprises four electrical connection ports, four conductive connection rods and four connection ports, the four conductive connection rods are respectively connected to the four electrical connection ports and the four connection ports, the four electrical connection ports are respectively connected to the four line connection ports at the lower ends of the conductive connection rods through connection lines, the four connection ports are connected to one ends of normally open contacts of the four intermediate relays through the connection lines, and the other ends of the normally open contacts are connected to the grounding end through the connection lines.

6. The apparatus of claim 1, wherein the inductive current sensors are in four sets and are mounted on four conductive links of a conductive trace row, and wherein the inductive current sensors include a sensing port connected to the controller analog sensing port by a connecting wire.

7. The device as claimed in claim 1, wherein the connection switches are four groups, and are installed on the door of the control box, two sides of the switches are connected to the digital input port of the controller through a connection line, and the connection switches control the actuation of the intermediate relay through the controller.