CN214176671U

CN214176671U - Device for preventing reverse power supply of high-voltage line

Info

Publication number: CN214176671U
Application number: CN202022773526.7U
Authority: CN
Inventors: 宣茜凡; 欧朱建
Original assignee: Nantong Tongming Group Co ltd; Nantong Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Nantong Tongming Group Co ltd; Nantong Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-09-10
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a device that is used for high voltage transmission lines to prevent power supply backward, including electric power shaft tower, unable adjustment base, feeder ear, power consumption end, link and earthing terminal. The fixed base is installed on the top end of the electric power tower, the power supply end is fixed on one side of the fixed base, and the power utilization end is fixed on the other side of the fixed base. The connecting end is arranged on a fixed base between the power supply end and the power utilization end, and the grounding end is arranged on an electric power tower at the lower end of the power supply end. The device is fixed on the electric power tower, and is connected between power supply end and the power consumption end through cutting off, controls the connection of high-voltage line to power supply end department has installed the earthing terminal, and when being used for overhauing high-voltage line, the staff of being convenient for ground connection.

Description

Device for preventing reverse power supply of high-voltage line

Technical Field

The utility model belongs to the technical field of electric power, a device that is used for high voltage transmission lines to prevent power supply backward is related to.

Background

At present, the power grid is overhauled by firstly closing a power supply system in an area where an overhaul line is located, then overhauls by working aloft without carrying out anti-reverse power supply treatment, and the mode can not ensure the safety of constructors, because overhead cables are bound to be connected into a house, and partial users (such as schools, markets, factories and the like) are provided with generators so as to ensure normal power supply during power failure without influencing the normal operation of electric appliances, the phenomenon that the power is reversely supplied to an overhead main line from a user self-provided generator during power failure so as to enable the main line to be still electrified exists, if the constructors overhauls after disconnecting the power supply system on the main line without the anti-reverse power supply treatment, extremely large potential safety hazards must exist, even the maintainers do not carry out grounding treatment for high-efficiency operation, and further threaten the life safety, therefore, the process of preventing the reverse power supply of the cable is very important, firstly, the cable with the insulating sheath needs to be stripped off by a section of the insulating sheath of the cable to form a bare wire part, the grounding wire is connected with the bare wire part to prevent the reverse power supply, but the exposed part of the cable is certainly corroded, electric shock and other potential safety hazards happen in the weather of wind and rain, the cable is stripped again when the circuit is overhauled every time, the grounding is carried out, and the operation is very troublesome, so that a device for preventing the reverse power supply of the high-voltage line is urgently needed.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model relates to a device for high tension line prevents power supply backward, the device fix on electric power tower, through cutting off the power supply end and with connecting between the power consumption end, control high tension line's connection to power supply end department has installed the earthing terminal, and when overhauing high tension line, the staff of being convenient for ground connection.

The utility model provides a device that is used for high voltage transmission lines to prevent power supply down, including electric power shaft tower, unable adjustment base, feeder ear, power consumption end, link and earthing terminal. The fixed base is installed on the top end of the electric power tower, the power supply end is fixed on one side of the fixed base, and the power utilization end is fixed on the other side of the fixed base. The connecting end is arranged on a fixed base between the power supply end and the power utilization end, and the grounding end is arranged on an electric power tower at the lower end of the power supply end.

Furthermore, the power supply end, the power utilization end and one side of the fixed base are provided with downward grooves, and elastic conductors are arranged in the grooves.

Further, the elastic conductor is arc-shaped.

The power supply terminal is further connected with the grounding terminal through a circuit breaker.

Further be the last circular arc structure that is of unable adjustment base, the circular arc inboard has the through-hole, and flexible adjust knob is equipped with to the bottom of through-hole.

Furthermore, the upper end of the connecting end is a conductor, and the lower end of the connecting end is an insulator.

And the two ends of the conductor are respectively arranged at the lower ends of the power supply end groove and the power utilization end groove.

Furthermore, both ends of the electric conductor are cylindrical structures which can be jointed with the elastic conductor.

Furthermore, a fixing rod is installed at the bottom of the insulator, the fixing rod is installed in a through hole of the fixing base, and one end of the fixing rod is installed on the telescopic adjusting knob.

The beneficial effects of the utility model reside in that: the power supply end and the power consumption end are disconnected and connected through the connecting end, the grooves formed by connecting the power supply end and the power consumption end with the connecting end are downward, the corrosion of weather on the power supply end and the power consumption end is slowed down, the fixing base is of an arc structure, and the water storage of the device cannot be achieved. The power supply end is connected with the grounding end through the circuit breaker, so that the grounding operation of workers is better facilitated.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a device for preventing reverse power supply of a high-voltage line of the utility model;

fig. 2 is a schematic structural view of an electric power tower of the utility model for a device for preventing reverse power supply of a high-voltage line;

fig. 3 is a schematic diagram of a power supply end structure of a device for preventing reverse power supply of a high-voltage line according to the present invention;

FIG. 4 is a schematic diagram of a power utilization end structure of a device for preventing reverse power supply of a high-voltage line of the utility model;

fig. 5 is a schematic view of the connection end structure of the device for preventing reverse power supply of the high-voltage line.

In the figure: 1. an electric power tower; 2. a fixed base; 3. a power supply terminal; 4. a connecting end; 5. a ground terminal; 6. an elastic conductor; 7. a cut-off switch; 8. a telescopic adjusting knob; 9. an electrical conductor; 10. an insulator; 11. fixing the rod; 12. and (4) a power utilization end.

Detailed Description

The following describes in detail a specific embodiment of the device for preventing reverse power supply in a high voltage line according to the present invention with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides a device that is used for high voltage transmission lines to prevent power supply backward, including electric power tower 1, unable adjustment base 2, feeder ear 3, power consumption end 12, link 4 and earthing terminal 5. The fixed base 2 is installed on the top end of the electric power tower 1, the power supply end 3 is fixed on one side of the fixed base 2, and the power utilization end 12 is fixed on the other side of the fixed base 2. The connecting end 4 is arranged on the fixed base 2 between the power supply end 3 and the power utilization end 12, and the grounding end 5 is arranged on the electric power tower 1 at the lower end of the power supply end 3.

As shown in FIGS. 3 and 4, the power supply terminal 3 and the power consumption terminal 12 have a downward groove on one side of the fixing base 2 according to the above structure, and the elastic conductor 6 is installed inside the groove.

According to the structure, the elastic conductor 6 is arc-shaped, the arc-shaped elastic conductor 6 can increase the contact area with the electric conductors 9 at the two ends of the connecting end 4, and the situation that the connecting end 4 is unstable in connection is avoided.

According to the structure, the power supply end 3 is connected with the grounding end 5 through the circuit breaker 7, and the power supply end 3 is more conveniently connected with the grounding end 5 through the circuit breaker 7.

As shown in FIG. 2, the fixing base 2 has an arc structure, the inner side of the arc is provided with a through hole, and the bottom of the through hole is provided with a telescopic adjusting knob 8. This unable base 2 is the circular arc structure, and under weather, this structure can make the unable retaining of device, improves the security of grid transmission, also slows down the device simultaneously and is corroded.

As shown in fig. 5, according to the above structure, the upper end of the connecting end 4 is the conductor 9, and the lower end of the connecting end 4 is the insulator 10. This structure can avoid the staff when adjusting link 4 with the direct contact of electric conductor 9, improves the security of operation.

According to the structure, the two ends of the electric conductor 9 are respectively arranged at the lower ends of the groove of the power supply end 3 and the groove of the power utilization end 12, and the two ends of the electric conductor 9 can be respectively arranged in the groove of the power supply end 3 and the groove of the power utilization end 12 through the telescopic adjusting knob 8.

According to the structure, the two ends of the electric conductor 9 are of cylindrical structures which can be matched with the elastic conductor 6, and the structure can be better contacted with the elastic conductor 6 in the grooves at the lower ends of the power supply end 3 and the power utilization end 12.

According to the structure, the bottom of the insulator 10 is provided with the fixing rod 11, the fixing rod 11 is arranged in the through hole of the fixed base 2, and one end of the fixing rod 11 is arranged on the telescopic adjusting knob 8. By adjusting the telescopic adjusting knob 8, the electric conductor 9 is fixed in the downward groove of the power supply end 3 and the power utilization end 12.

According to the structure, the specific operation mode of the device for preventing the reverse power supply of the high-voltage line is as follows: the device is arranged at the top end of an electric power tower 1, and the number and the positions of a power supply terminal 3, a connecting terminal 4, a power utilization terminal 12, a circuit breaker 7 and a grounding terminal 5 are reasonably planned according to the number of overhead lines. According to actual conditions, the fixing device is installed on the top end of the electric power tower 1, the power supply end 3 is installed at one end of power grid transmission, and the power utilization end 12 is installed on one side of an incoming line of a power utilization unit. When the electric wire netting need overhaul, the staff is through adjusting unable adjustment base 2's flexible adjust knob 8, with the separation between the electric conductor 9 of link 4 and power supply end 3 and earthing terminal 5. After the connection end 4 is separated, the worker closes the disconnecting switch 7 connecting the power supply end 3 and the grounding end 5, so that the power supply line for maintenance is in a grounding state.

A device for preventing reverse power supply of a high-voltage line is mainly used on a power tower 1 between a power supply line and a power consumption unit, and can disconnect the line between the power supply line and the power consumption unit. The power consumption unit can generate power through the generator equipment, and the staff who overhauls the power supply line can not cause life safety. The device has avoided the maintainer to need carry out ground connection at the in-process of in-service use, and the condition of damage circuit.

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. A device for preventing reverse power supply of a high-voltage line is characterized by comprising an electric power tower, a fixed base, a power supply end, a power utilization end, a connecting end and a grounding end; the fixed base is arranged at the top end of the electric power tower, the power supply end is fixed on one side of the fixed base, and the power utilization end is fixed on the other side of the fixed base; the connecting end is arranged on a fixed base between the power supply end and the power utilization end, and the grounding end is arranged on an electric tower at the lower end of the power utilization end.

2. The apparatus of claim 1, wherein the power supply end and the power utilization end are provided with a downward groove at one side of the fixing base, and the elastic conductor is arranged in the groove.

3. The apparatus according to claim 2, wherein the elastic conductor is arc-shaped.

4. The apparatus according to claim 1, wherein the power consuming terminal is connected to the ground terminal through a circuit breaker.

5. The device for preventing reverse power supply of the high-voltage line as claimed in claim 1, wherein the fixing base is of an arc structure, a through hole is formed in the inner side of the arc, and a telescopic adjusting knob is installed at the bottom of the through hole.

6. The apparatus according to claim 1, wherein the upper end of the connecting terminal is a conductor, and the lower end of the connecting terminal is an insulator.

7. The apparatus according to claim 6, wherein the two ends of the conductor are respectively at the lower ends of the power supply end groove and the power utilization end groove.

8. The device for preventing reverse power supply of the high-voltage line as claimed in claim 6 or 7, wherein the two ends of the electric conductor are cylindrical structures capable of being engaged with the elastic conductor.

9. The apparatus of claim 6, wherein a fixing rod is installed at the bottom of the insulator, the fixing rod is installed in the through hole of the fixing base, and one end of the fixing rod is installed on the telescopic adjusting knob.