CN105675927A - Portable low voltage nuclear phase insulating rod - Google Patents

Abstract

The invention discloses a portable low-voltage nuclear phase insulating rod, which is characterized in that the cylindrical front insulating rod (3) is movably connected to the copper contact (1) through an insertable test terminal (2), and there are pin-shaped The first end of the insulation test wire (11) of the plug is inserted into the test terminal (2), and the adjustment range between the copper contact (1) and the front insulating rod (3) is -90 degrees to +90 degrees; the cylindrical front insulating rod The rear end of (3) is movably connected with the cylindrical rear insulating rod (5) through the connecting fastening block (4), and between the front insulating rod (3) and the connecting fastening block (4), the connecting fastening block (4) There is an adjustment range of -180° to +180° between the rear insulating rod (5); the rear insulating rod (5) passes through the threaded connection groove (6), the threaded connection protrusion (8) and the extended insulating rod (7) Threaded connection, the invention has simple structure, convenient operation, easy to carry, wide application range, reduces hidden danger of electric shock during operation, and improves working efficiency of nuclear phase.

Description

A portable low-voltage nuclear phase insulation pole

Technical field:

The invention relates to a portable low-voltage phase-inspection insulation rod, which is widely used in the phase-inspection work of a low-voltage incoming cabinet of power distribution, and belongs to the field technical field of power distribution inspection.

Background technique:

In a distribution station with multiple transformers, it involves work such as power outage maintenance of low-voltage incoming cabinets. After the work is completed, it is necessary to perform phase verification on the low-voltage side of different transformers. Generally, it is selected to perform phase verification on both sides of the circuit breaker of the low-voltage incoming cabinet. . The phase-checking work can ensure that the phase sequence of the low-voltage three-phase voltage (400V) output by different transformers is the same, and there will be no short circuit at the low-voltage cabinet when the transformers are running in parallel. Low-voltage three-phase alternating current caused by different phase sequences, such as motor reversal and other abnormal operation conditions.

At this stage, the phase verification of the busbars on both sides of the circuit breaker in the low-voltage incoming cabinet in the distribution station needs to be carried out with the AC file of the multimeter. Due to the complex layout of the low-voltage busbars of the incoming line of the low-voltage cabinet, the space is narrow, and the low-voltage busbars on both sides of the circuit breaker are charged. In contrast, the distance between the human body and the live parts is small, and it is inconvenient to grasp the multimeter pen after wearing insulating gloves, the work efficiency is reduced, and the hidden danger of electric shock is relatively large.

Invention content:

The object of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a low-voltage nuclear phase insulating rod with simple structure, convenient operation, portability, wide application range, reduced electric shock hazards during operation, and improved nuclear phase working efficiency.

The object of the present invention can be achieved through the following measures: a portable low-voltage nuclear phase insulation rod, which is characterized in that it includes a front insulation rod, a rear insulation rod and an extended insulation rod, these three insulation rods are all cylindrical, and the length is greater than 35cm , the front insulating rod is flexibly connected to the copper contact through the insertable test terminal, the first end of the insulating test wire with pin plugs at both ends is inserted into the test terminal, the rotation angle between the copper contact and the front insulating rod is - The adjustment range is from 90 degrees to +90 degrees; the rear end of the front insulating rod and the front end of the rear insulating rod are respectively provided with a symmetrical front connecting groove and a rear connecting groove, and the front connecting groove at the rear end of the front insulating rod is connected tightly by bolts. One end of the solid block is flexibly connected, and the rear connecting groove at the front end of the rear insulating rod is flexibly connected to the other end of the connecting fastening block through bolts, between the front insulating rod and the connecting fastening block, and between the connecting fastening block and the rear insulating rod The rotation angle has an adjustment range of -180 degrees to +180 degrees; the rear end of the rear insulating rod is provided with a threaded connection groove, and the front end of the extended insulating rod is provided with a threaded connection card that matches the threaded connection groove. The threaded connection groove and the threaded connection protrusion are threadedly connected with the extended insulating rod.

Compared with the prior art, the present invention can produce the following positive effects: the present invention can effectively solve the problems of inconvenient work and great potential safety hazards in low-voltage cabinet busbar discharge and nuclear phase work in distribution stations, and avoids the problems that are easily caused in some types of low-voltage incoming cabinets. The occurrence of electric shock, phase-to-phase short circuit, etc. which has:

1. Simple structure and convenient operation. Connect the two sections of the rear insulation rod with the extended insulation rod, adjust and fix the angle between the front insulation rod and the rear insulation rod, adjust and fix the angle between the copper contact and the front insulation rod, and insert the first end of the insulation test wire with pin plugs at both ends Among the test terminals, the end of the insulated test wire with pin plugs at both ends can be used by inserting it into the socket of the test lead of the multimeter.

2. It is easy to disassemble and carry. The rear insulating rod and the extended insulating rod are easy to disassemble, and can be disassembled and folded. It has the characteristics of small footprint and low quality.

3. Wide application range. Different models of low-voltage cabinets from different manufacturers can meet the requirements of nuclear phase work.

4. Ensure safe operation. When in use, by reasonably adjusting the angle between the front insulating rod and the rear insulating rod, the distance between the human body and the live parts can be ensured to be greater than 35cm (at 10kV, the safe distance between the working range of the operator and the live body), and the safe distance can be guaranteed.

5. Improve work efficiency. Ensure a safe distance during nuclear phase operations, and avoid the use of auxiliary safety tools such as insulating boots and insulating gloves.

Description of drawings:

Fig. 1 is a structural schematic diagram of the present invention.

FIG. 2 is a top view of FIG. 1 .

detailed description:

The specific embodiment of the present invention is described in detail below in conjunction with accompanying drawing:

Embodiment: A portable low-voltage nuclear phase insulation rod (see Figure 1-Figure 2), which includes a front insulation rod 3, a rear insulation rod 5 and an extended insulation rod 7, the three insulation rods are cylindrical, and the front insulation rod 3 , The lengths of the rear insulating rod 5 and the lengthening insulating rod 7 are all greater than 35cm. The front insulating rod 3 is connected to the copper contact 1 through the pluggable first test terminal 2, and the adjustment range between the copper contact 1 and the front insulating rod 3 is guaranteed to be -90° to +90°. The rear end of the front insulating rod 3 and the front end of the rear insulating rod 5 are respectively provided with mutually symmetrical front connecting grooves 9 and rear connecting grooves 10. One end is movably connected, and the rear connection groove 10 at the front end of the rear insulating rod 5 is movably connected with the other end of the connecting fastening block 4 through bolts, between the front insulating rod 3 and the connecting fastening block 4, between the connecting fastening block 4 and the rear insulating There is an adjustment range of -180 degrees to +180 degrees between the rods 5 . The rear end of the rear insulating rod 5 is provided with a threaded connection groove 6, and the front end of the lengthened insulating rod 7 is provided with a threaded connection card protrusion 8 matched with the threaded connection groove 6, and the rear insulating rod 5 passes through the threaded connection groove 6, the threaded connection card protrusion 8 is threadedly connected with extension insulating rod 7. Insert the first end of the insulation test wire 11 with pin plugs at both ends into the test terminal 2. The cross section of the copper core of the insulation test wire 11 is 2.5mm ² and the length is greater than 100cm. The first end is inserted into the test terminal 2. When in use, the two Insert the end of the insulation test wire 11 end with a needle plug into the jack of the multimeter test lead.

In the present invention, the angle between the front insulating rod and the rear insulating rod can be adjusted and fixed, the angle between the copper contact and the front insulating rod can be adjusted and fixed, and the above two angles can be adjusted according to different busbar arrangement layouts, so that the operator can On the basis of ensuring the safe distance, the present invention is used to replace the test pen of the multimeter, and the multimeter is used to complete the phase verification work.

Use the AC voltage range of the multimeter to measure the voltage of the two low-voltage copper busbars of the phase to be verified. The multimeter shows that the two phases with a smaller voltage value are in the same phase, and the voltage value difference is about 380V and greater than 380V. It is out of phase. If there is a one-to-one correspondence between phase A and phase A, phase B and phase B, and phase C and phase C of the two sections of busbars, it proves that the voltage phase sequence of the two sections of low-voltage busbars is correct and meets the conditions for power transmission; if there is no one-to-one correspondence , there is an error in the phase sequence, and the conditions for power transmission are not met, and it needs to be checked and rectified.

The above is just to illustrate some principles of the present invention. This description is not intended to limit the present invention to the specific structure and scope of application shown. Therefore, all corresponding modifications and equivalents that may be used are Belong to the scope of the patent applied for by the present invention.

Claims (1)

1. A portable low-voltage nuclear phase insulating rod, characterized in that it includes a front insulating rod (3), a rear insulating rod (5) and an extended insulating rod (7). These three insulating rods are all cylindrical, and the length is greater than 35cm , the front insulating rod (3) is movably connected to the copper contact (1) through the insertable test terminal (2), and the first end of the insulated test wire (11) with pin plugs at both ends is inserted into the test terminal (2) , the rotation angle between the copper contact (1) and the front insulating rod (3) has an adjustment range of -90 degrees to +90 degrees; the rear end of the front insulating rod (3) and the front end of the rear insulating rod (5) are respectively There are mutually symmetrical front connection grooves (9) and rear connection grooves (10). The front connection groove (9) at the rear end of the front insulating rod (3) is flexibly connected to one end of the connection fastening block (4) through bolts. The rear connecting groove (10) at the front end of the insulating rod (5) is flexibly connected to the other end of the connecting fastening block (4) through bolts, and the connection between the front insulating rod (3) and the connecting fastening block (4) is fastened The rotation angle between the block (4) and the rear insulating rod (5) has an adjustment range of -180 degrees to +180 degrees; the rear end of the rear insulating rod (5) is provided with a threaded connection groove (6) to lengthen the insulating rod The front end of (7) is provided with a threaded connection protrusion (8) matching the threaded connection groove (6), and the rear insulating rod (5) passes through the threaded connection groove (6), the threaded connection protrusion (8) and the extended insulating rod (7) Threaded connection.