CN207675836U - A low-voltage bus duct phase nuclear device - Google Patents

Abstract

A kind of low voltage bus bar groove phasing tester of the utility model is related to especially carrying out nuclear phase to low voltage bus bar groove to low pressure phase sequence nuclear phase technical field in the operation of twin-power switch cabinet.Including distal side bar and proximal stem, distal side bar and proximal stem are insulated telescopic rods, are equipped with exchange electrification display module on distal side bar top, the end of distal side bar is equipped with point contact stick；It is equipped with U-shaped card slot in the end of proximal stem, for clip in bus duct；It is connected by conducting wire between distal side bar and proximal stem.Using insulated telescopic rods, 10kV pressure resistances can be born, the safe distance of 1m can be reached, improve the safety of nuclear phase personnel；U-shaped card slot can be stuck on bus duct, and point contact stick being capable of contact buses slot well；Left hand holds proximal stem when use, and the right hand holds distal side bar, realizes one man operation；It exchanges electrification display module directly to power to measurement, display module using measurement power supply, is not necessarily to external battery.

Description

A low-voltage bus duct phase nuclear device

technical field

The utility model relates to a low-voltage bus duct phase verification device, which relates to the technical field of low-voltage phase sequence verification during the operation of a double power switch cabinet, in particular to the phase verification of the low-voltage bus duct.

Background technique

With the development of the power industry, grid users have higher and higher requirements for the reliability and safety of power supply. At present, in urban and industrial power grids, it is necessary to ensure that some users realize dual power supply, and there are a large number of switchgears at the user end. When the switchgear has dual power supply incoming lines, in order to ensure that the three-phase phase sequence of the two power supplies is consistent, the phase sequence verification of the three-phase power supply must be performed before power transmission. The high voltage is mainly through the secondary phase verification, and the low voltage phase verification is completed by the electric power operator directly measuring the voltage through a multimeter, usually at the bus duct of the low-voltage contact cabinet in the power distribution room. The low-voltage bus duct is divided into two lines, each of which is a three-phase four-wire system. It mainly measures a certain phase of different power sources. If the phase is the same, the voltmeter will display 0V, and if the phase is different, it will be displayed as line voltage, which is about 380V.

There are two problems in the nuclear phase of low-voltage bus duct: one is the safety problem, the body of the staff is too close to the exposed part of the bus duct, which can easily cause electric shock accidents. Moreover, some staff members are careless and easily insert the multimeter pens into the wrong holes, eventually causing the meter to burn or explode, resulting in personal injury accidents. The second is that two people are required to complete the phase verification of the bus duct, and another person is required for safety monitoring, which wastes manpower and material resources and is relatively inefficient.

Utility model content

The purpose of this utility model is to provide a low-voltage bus duct phase nuclear device to address the above shortcomings, increase the safety distance through the telescopic rod, improve the phase nuclear safety, and use a digital display device to replace the display voltage.

The utility model is realized by taking the following technical solutions:

A low-voltage busway phase nuclear device includes a far side rod and a near side rod, both of which are insulating telescopic rods, an AC live display module is arranged on the upper part of the far side rod, and a point is arranged at the end of the far side rod Type contact rod; a U-shaped card slot is provided at the end of the proximal rod for clamping on the bus groove; the far rod and the proximal rod are connected by wires.

The AC electrified display module adopts LM2576-5 chip and has LED display, built-in sampling circuit and AC-DC conversion module, wherein the AC-DC conversion module is used to convert 30V-500V alternating current into 5V direct current for sampling circuit and LED Monitor use.

One end of the wire is connected to the AC live display module of the far pole, and the other end of the wire is connected to the U-shaped slot of the proximal pole.

Both the near side rod and the far side rod are provided with operating handles.

The operating handle is covered with a threaded insulating rubber handle, which is convenient for the operator to hold, and is also convenient for replacement after aging or soiling.

The insulating telescopic rod is made of insulating material, and the telescopic rod at least includes a first sliding rod and a second sliding rod that are slidably connected, wherein the second sliding rod is located on the upper part and is sleeved in the first sliding rod. The rod also includes: a nozzle, the lower part of which is fixed around the upper end of the first sliding rod, and the upper part is provided with external threads; the tightening claw, the lower part is arranged in the nozzle, and the upper part exposed outside the nozzle has a frustum-shaped outer periphery surface, and surrounds the outside of the second slide bar; and the first lock nut, sleeved on the outside of the tightening claw, the lower part is provided with an internal thread that engages with the external thread, and has the ability to squeeze the The frustum-shaped outer peripheral surface and the frustum-shaped inner peripheral surface of the second slide bar are tightly embraced by the fixing claws.

When the utility model is in use, the left hand and the right hand hold the near side rod and the far side rod respectively, so that the U-shaped card slot on the near side rod is stuck on a phase of the bus groove, and the point contact rod on the far side rod and the bus groove The other phase is in contact with each other. If they are in the same phase, the AC live display module will display no voltage. If they are not in the same phase, the AC live display module will display voltage.

The utility model advantage:

(1) The insulating telescopic rod used in the utility model can withstand 10kV withstand voltage, and can reach a safety distance of 1m, which improves the safety of nuclear phase personnel;

(2) The U-shaped card slot can be stuck on the bus duct, and the point contact rod can contact the bus duct well; the insulating telescopic rod with U-shaped card slot is suitable for left hands, and the insulating telescopic rod with point contact rod It is suitable for the right hand, the left hand holds the proximal lever, and the right hand holds the far lever, realizing single-person operation;

(3) The AC live display module directly uses the measurement power supply to supply power to the measurement and display modules, without external batteries. If it is in the same phase, there will be no display on the AC charged display, and if it is not in phase, there will be a voltage display.

Description of drawings

Fig. 1 is a structural schematic diagram of a low-voltage bus duct phase nuclear device of the present invention.

In the figure: 1. far side rod, 2. near side rod, 3. AC live display module, 4. point contact rod, 5. U-shaped card slot, 6. wire, 7. operating handle.

Detailed ways

Below in conjunction with accompanying drawing, the technical scheme of the utility model is described in further detail:

As shown in Figure 1, a low-voltage busway phase nuclear device includes a far side rod 1 and a near side rod 2, both of which are insulated telescopic rods, and an AC live wire is provided on the upper part of the far side rod 1. In the display module 3 , the end of the distal rod 1 is provided with a point contact rod 4 ; the end of the proximal rod 2 is provided with a U-shaped slot 5 , and the distal rod 1 and the proximal rod 2 are connected by a wire 6 .

Described AC charged display module 3 adopts LM2576-5 chip, has LED display, built-in sampling circuit and AC-DC conversion module, wherein AC-DC conversion module is used for converting 30V-500V alternating current into 5V direct current, for sampling circuit and LED display is used.

One end of the wire 6 is connected to the AC charged display module 3 of the far pole 1 , and the other end of the wire 6 is connected to the U-shaped slot 5 of the proximal pole 2 .

The U-shaped slot 5 is used for clamping on the bus duct.

Both the proximal rod 2 and the distal rod 1 are provided with an operating handle 7 .

The operating handle 7 is covered with a threaded insulating rubber handle, which is convenient for the operator to hold, and is also convenient for replacement after aging or soiling.

The insulating telescopic rod is made of insulating material, and the telescopic rod at least includes a first sliding rod and a second sliding rod that are slidably connected, wherein the second sliding rod is located on the upper part and is sleeved in the first sliding rod. The rod also includes: a nozzle, the lower part of which is fixed around the upper end of the first sliding rod, and the upper part is provided with external threads; the tightening claw, the lower part is arranged in the nozzle, and the upper part exposed outside the nozzle has a frustum-shaped outer periphery surface, and surrounds the outside of the second slide bar; and the first lock nut, sleeved on the outside of the tightening claw, the lower part is provided with an internal thread that engages with the external thread, and has the ability to squeeze the The frustum-shaped outer peripheral surface and the frustum-shaped inner peripheral surface of the second slide bar are tightly embraced by the fixing claws.

The utility model provides an easy-to-operate general-purpose electronic phase check device, which is mainly used for phase check of low-voltage bus ducts and can adapt to different types of bus ducts. When in use, the left hand and right hand hold the proximal pole 2 and the far side pole 1 respectively, Make the U-shaped card slot 5 on the proximal pole 2 be stuck on one phase of the bus duct, and the point contact rod 4 on the far side pole 1 is in contact with the other phase of the bus duct. If it is in the same phase, the AC live display module 3 has no voltage Display, if the phase is different, the AC live display module will display the voltage.

The above embodiments are only to illustrate the technical ideas of the utility model, and cannot limit the protection scope of the utility model with this. Any changes made on the basis of the technical solutions according to the technical ideas proposed by the utility model all fall into the scope of the utility model. within the scope of the new protection.

Claims (5)

1. a kind of low voltage bus bar groove phasing tester, it is characterised in that：Including distal side bar and proximal stem, distal side bar and proximal stem are exhausted Edge telescopic rod is equipped with exchange electrification display module on distal side bar top, and the end of distal side bar is equipped with point contact stick；In proximal stem End be equipped with U-shaped card slot, for clip in bus duct；It is connected by conducting wire between distal side bar and proximal stem.

2. low voltage bus bar groove phasing tester according to claim 1, it is characterised in that：The exchange electrification display module uses LM2576-5 chips.

3. low voltage bus bar groove phasing tester according to claim 1, it is characterised in that：The friendship of described conducting wire one end and distal side bar Stream electrification display module is connected, and the conducting wire other end is connected with the U-shaped card slot of proximal stem.

4. low voltage bus bar groove phasing tester according to claim 1, it is characterised in that：The proximal stem and distal side bar are equipped with Operating handle.

5. low voltage bus bar groove phasing tester according to claim 4, it is characterised in that：It is cased on the operating handle threaded Electro-insulating rubber handle sleeve.