CN207625172U - A kind of low tension switch hotline maintenance tool - Google Patents

Abstract

The utility model discloses a live maintenance tool for a low-voltage switch, which comprises a first three-phase insulation baffle, a second three-phase insulation baffle, a BC phase insulation baffle, a C-phase insulation baffle, a single-phase insulation baffle and an insulation operation Wrench; the first left side plate and the first right side plate of the first three-phase insulating baffle are symmetrically provided with three busbar slots, and the second three-phase insulating baffle is symmetrically arranged on the second left side plate and the second right side plate There are three busbar slots; the third left side panel and the third right side panel of the BC phase insulation baffle are symmetrically provided with two busbar slots; the fourth left side panel and the fourth right side panel of the C phase insulation baffle are symmetrical There is a busbar slot; the single-phase insulation baffle is a flat plate with a horizontal slot. Its technical effect is: it can ensure the safety of the operation and the personal safety of the operators; the power outage area is reduced from the original outage range of the entire box transformer to the power outage range of the low-voltage switch circuit that needs to be repaired, tested or replaced.

Description

A low-voltage switch live maintenance tool

technical field

The utility model relates to a live maintenance tool for a low-voltage switch in the field of electric tools.

Background technique

Due to various reasons during the operation of the box transformer, the low-voltage switch will fail and need to be repaired, tested or replaced. The traditional method of overhauling, testing or replacing the low-voltage switch is to cut off the high-voltage incoming line of the box-type substation, and then cut off the overall power of the box-type substation, then overhaul, test or replace the low-voltage switch, and then resume power transmission after the overhaul, test or replacement of the low-voltage switch. The disadvantages of this method are obvious: increasing the pre- and post-workload of maintenance, testing and replacement of low-voltage switches, involving 10kV line power outages, long power outages, large power outage areas, and affecting user power quality.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art and provide a low-voltage switch live overhaul tool, which can ensure the safety of the operation and the personal safety of the operators; the power failure area is reduced from the original power failure range of the entire box to The power failure range of the low-voltage switch circuit that needs to be repaired, tested or replaced.

A technical solution to achieve the above purpose is: a low-voltage switch live overhaul tool, including the first three-phase insulation barrier, the second three-phase insulation barrier, the BC phase insulation barrier, the C-phase insulation barrier, and the single-phase insulation barrier. Baffle and insulated operating wrench;

The first three-phase insulating baffle is composed of a first left side plate, a first right side plate, a first top plate and a first front side plate, and the first left side plate and the first right side plate are arranged symmetrically. There are three busbar slots;

The second three-phase insulating baffle is composed of a second left side plate, a second right side plate, a second top plate and a second front side plate, and the second left side plate and the second right side plate are arranged symmetrically. There are three busbar slots;

The BC-phase insulating baffle is composed of a third left side plate, a third right side plate, a third top plate and a third front side plate, and the third left side plate and the third right side plate are symmetrically arranged with two Root bus slot;

The phase C insulating baffle is composed of a fourth left side plate, a fourth right side plate, a fourth top plate and a fourth front side plate, and the fourth left side plate and the fourth right side plate are symmetrically provided with a bus slot;

The single-phase insulation baffle is a flat plate with a horizontal slot.

Further, the first top plate of the first three-phase insulation baffle is provided with a neutral line incoming line bar clamping slot that can be connected with the neutral line incoming line bar of the low-voltage switch;

The third top plate of the BC-phase insulation baffle is provided with an A-phase incoming line row card slot that can be connected to the A-phase incoming line row of the low-voltage switch;

The fourth top plate of the C-phase insulating baffle is provided with a B-phase incoming line bar card slot that can be snapped into the B-phase incoming line bar of the low-voltage switch.

Further, the first three-phase insulation barrier and the second three-phase insulation barrier are of the same height, the height of the BC phase insulation barrier is lower than the height of the first three-phase insulation barrier, and the The height of the C-phase insulating barrier is lower than that of the BC-phase insulating barrier.

Further, the first three-phase insulation barrier, the second three-phase insulation barrier, the BC phase insulation barrier, the C-phase insulation barrier and the single-phase insulation barrier are all made of transparent Made of insulating material.

Further, the insulating operating wrench is a first insulating operating wrench or a second insulating operating wrench;

The first insulated operating wrench includes a sleeve part for operating a low-voltage switch, a rotating part for rotating the sleeve part, and the rotation part and the sleeve part pass through the same sleeve part as the sleeve part. shaft connection shaft connection;

The second insulated operating wrench includes a wrench body for operating a low-voltage switch, and a handle connected to the tail end of the wrench body.

Adopting the technical scheme of a low-voltage switch live overhaul tool of the utility model, including the first three-phase insulation baffle, the second three-phase insulation baffle, the BC phase insulation baffle, the C-phase insulation baffle, and the single-phase insulation baffle plate and an insulating operation wrench; the first three-phase insulating baffle is composed of a first left side plate, a first right side plate, a first top plate and a first front side plate, and the first left side plate and the first A right side plate is symmetrically provided with three bus bar slots; the second three-phase insulating baffle is composed of a second left side plate, a second right side plate, a second top plate and a second front side plate, and the second left The side plate and the second right side plate are symmetrically provided with three bus bar slots; the BC-phase insulating baffle is composed of the third left side plate, the third right side plate, the third top plate and the third front side plate. The third left side plate and the third right side plate are symmetrically provided with two bus bar slots; the C-phase insulating baffle is composed of the fourth left side plate, the fourth right side plate, the fourth top plate and Composed of side plates, the fourth left side plate and the fourth right side plate are symmetrically provided with a busbar slot; the single-phase insulating baffle is a flat plate with a horizontal slot. Its technical effect is: it can ensure the safety of the operation and the personal safety of the operators; the power outage area is reduced from the original outage range of the entire box transformer to the power outage range of the low-voltage switch circuit that needs to be repaired, tested or replaced.

Description of drawings

Fig. 1 is a structural schematic diagram of the first three-phase insulating baffle of a low-voltage switch live maintenance tool of the present invention.

Fig. 2 is a schematic structural diagram of the second three-phase insulation baffle of a low-voltage switch live overhaul tool of the present invention.

Fig. 3 is a structural schematic diagram of a BC-phase insulating baffle of a low-voltage switch live overhaul tool of the utility model.

Fig. 4 is a schematic structural diagram of a C-phase insulation baffle of a low-voltage switch live overhaul tool of the present invention.

Fig. 5 is a schematic structural diagram of a single-phase insulating baffle of a low-voltage switch live overhaul tool of the present invention.

Fig. 6 is a structural schematic diagram of the first insulating operation wrench of a low-voltage switch live overhaul tool of the present invention.

Fig. 7 is a schematic structural diagram of a second insulating operation wrench of a low-voltage switch live overhaul tool of the present invention.

Fig. 8 is a schematic view of a low-voltage switch live maintenance tool of the present invention before dismantling the A-phase incoming line row.

Fig. 9 is a schematic view of a low-voltage switch live overhaul tool of the present invention after dismantling the B-phase incoming line bar.

Detailed ways

Please refer to Fig. 1 to Fig. 9, in order to better understand the technical solution of the present utility model, the inventor of the utility model will describe in detail below through specific embodiments and in conjunction with the accompanying drawings:

The low-voltage switch 9 includes horizontal A-phase bus bars 91 , B-phase bus bars 92 and C-phase bus bars 93 . Between the A-phase bus 91, B-phase bus 92 and C-phase bus 93 and the incoming line terminals, there are successively arranged groups of vertically arranged first A-phase incoming line bar 911, first B-phase incoming line bar 921 and first C-phase incoming line bar 921. Phase incoming line bar 931, the second A-phase incoming line bar 912, the second B-phase incoming line bar 922 and the second C-phase incoming line bar 932 arranged vertically in groups, the third A-phase incoming line bar arranged vertically in groups Line bar 913, the third B-phase incoming line bar 923 and the third C-phase incoming line bar 933, and a line with the first A-phase incoming line bar 911, the first B-phase incoming line bar 921 and the first C-phase incoming line The vertical zero line incoming line row 94 corresponding to the row 931 position.

A live overhaul tool for a low-voltage switch of the present utility model includes a first three-phase insulating baffle 1, a second three-phase insulating baffle 2, a BC phase insulating baffle 3, a C-phase insulating baffle 4, and a single-phase insulating baffle 5, and the first insulating operating wrench 6 and the second insulating operating wrench 7.

The first three-phase insulating barrier 1 is made up of the first left side plate 11, the first right side plate 12, the first top plate 13 and the first front side plate 14, and the first left side plate 11 and the first right side plate 12 Three first bus bar slots 15 are arranged symmetrically on the upper side, corresponding to the A-phase bus bar 91 , the B-phase bus bar 92 and the C-phase bus bar 93 of the low-voltage switch 9 . The three first bus bar slots 15 on the first left side plate 11 and the first right side plate 12 are all arranged in parallel. The first top plate 13 of the first three-phase insulating barrier 1 is provided with a neutral line incoming line bar slot 16 corresponding to the neutral line incoming line bar 94 .

The second three-phase insulating baffle plate 2 is made up of the second left side plate 21, the second right side plate 22, the second top plate 23 and the second front side plate 24, on the second left side plate 21 and the second right side plate 22 Three second bus bar slots 25 are arranged symmetrically on the top, corresponding to the A-phase bus bar 91 , the B-phase bus bar 92 and the C-phase bus bar 93 of the low voltage switch 9 . The three second bus bar slots 25 on the second left side plate 21 and the second right side plate 22 are all arranged in parallel.

BC phase insulation baffle plate 3 is made up of the 3rd left side plate 31, the 3rd right side plate 32, the 3rd top plate 33 and the 3rd front side plate 34, on the 3rd left side plate 31 and the 3rd right side plate 32 there are symmetrical The two third busbar slots 35 correspond to the B-phase busbar 92 and the C-phase busbar 93 of the low-voltage switch 9 . The two third bus bar slots 35 on the third left side plate 31 and the third right side plate 32 are arranged in parallel. The third top plate 33 is provided with an A-phase incoming line bar slot 36 corresponding to the second A-phase incoming line bar 912 .

Phase C insulation baffle plate 4 comprises a fourth left side plate 41, a fourth right side plate 42, a fourth top plate 43 and a fourth front side plate 44, on the fourth left side plate 41 and on the fourth right side plate 42 A fourth busbar slot 45 is symmetrically arranged, corresponding to the C-phase busbar 93 of the low voltage switch 9 . The fourth top plate 43 of the C-phase insulating baffle 4 is provided with a B-phase incoming line bar slot 46 corresponding to the second B-phase incoming line bar 922 .

The single-phase insulating baffle 5 is a flat plate, and is provided with a horizontal slot 51 which can be horizontally inserted into the A-phase bus 91 and B-phase bus 92 of the low-voltage switch 9 .

The first three-phase insulation barrier 1, the second three-phase insulation barrier 2, the BC phase insulation barrier 3, the C-phase insulation barrier 4 and the single-phase insulation barrier 5 are all made of transparent insulating materials, such as plexiglass . The height h1 of the first three-phase insulation barrier 1 is equal to the height h2 of the second three-phase insulation barrier 92, the height h3 of the BC phase insulation barrier 3 is lower than the height h1 of the first three-phase insulation barrier 1, and the C phase insulation The height h4 of the baffle 4 is lower than the height h3 of the insulating baffle 3 of the BC phase, which is suitable for installation in the low-voltage switch 9 .

The first insulated operation wrench 6 includes a sleeve part 61 for operating the low-voltage switch 9, and a rotating part 62 for rotating the sleeve part 61. The connecting shaft 63 is connected.

The second insulated operating wrench 7 includes a wrench body 71 for operating the low-voltage switch 9 , and a handle 72 connected to the tail end of the wrench body 71 .

when using it:

As shown in Figure 8, the three first bus bar slots 15 on the first left side plate 11 of the first three-phase insulating barrier 1, and the three first bus bar slots 15 on the first right side plate 12 are connected to the phase A The busbar 91, the B-phase busbar 92 and the C-phase busbar 93 are correspondingly plugged in horizontally, and the first A-phase incoming line bar 911, the first B-phase incoming line bar 921 and the first C-phase incoming line bar 931 are insulated and protected. An A-phase incoming line bar 911 , a first B-phase incoming line bar 921 and a first C-phase incoming line bar 931 are in close contact with the first front side plate 13 . The zero line incoming line row 94 is snapped into the zero line incoming line row card slot 16, and is close to the bottom of the zero line incoming line row card slot 16.

Three second bus bar slots 25 on the second left side plate 21 of the second three-phase insulating barrier 2, and three second bus bar slots 25 on the second right side plate 22 are connected with the A phase bus bar 91 and the B phase bus bar 92 and C-phase bus bar 93 are correspondingly plugged in horizontally, and the third A-phase incoming line bar 913, the third B-phase incoming line bar 923 and the third C-phase incoming line bar 933 are insulated and protected, and the third A-phase incoming line bar 913 , the third B-phase incoming line bar 923 and the third C-phase incoming line bar 933 are in close contact with the second front side plate 23 .

In this way, the two ends of the A-phase bus 91 , the B-phase bus 92 and the C-phase bus 93 are isolated from the live parts.

The two third busbar slots 35 on the third left side plate 31 of the BC phase insulation baffle 3, and the two third busbar slots 35 on the third right side plate 32 are connected with the B-phase busbar 92 and the C-phase busbar 93, the second B-phase incoming line bar 922 and the second C-phase incoming line bar 932 are insulated and protected, and the second B-phase incoming line bar 922 and the second C-phase incoming line bar 932 are close to the third Front side panel 33. The second A-phase incoming line bar 912 is snapped into the A-phase incoming line bar slot 36 , and is close to the bottom of the A-phase incoming line bar slot 36 . In this way, the isolation of the A-phase bus 91 from the B-phase bus 92 and the C-phase bus 93 is realized. Then use the first insulation operation wrench 6 or the second insulation operation wrench 7 to remove the second A-phase incoming line bar 912 .

As shown in Figure 9, after the second A-phase incoming line bar 912 is removed, the fourth bus bar slot 45 on the fourth left side plate 41 of the C-phase insulating barrier 3, and the third busbar slot 45 on the fourth right side plate 44 The horizontal insertion of the busbar slot 45 and the C-phase busbar 93 insulates and protects the second C-phase incoming line bar 932 , and the second C-phase incoming line bar 932 is close to the fourth front side plate 43 . The second B-phase incoming line bar 922 is snapped into the B-phase incoming line bar slot 46 , and clings to the bottom of the B-phase incoming line bar slot 46 . At the same time, the horizontal slot 51 of the single-phase insulating baffle 5 is horizontally plugged in with the A-phase busbar 91 above the second B-phase incoming line bar 922, thereby realizing the A-phase busbar, the B-phase busbar 92 and the C-phase busbar 93 To isolate from live parts, remove the second B-phase incoming line bar 922 of the low-voltage switch. Then, above the second C-phase incoming line bar 932, the horizontal slot 51 of the single-phase insulating barrier 5 is plugged into the B-phase bus bar 92, and the second C-phase incoming line bar 932 of the low-voltage switch is removed.

Then overhaul, test or replace the low-voltage switch. After completion, install the low-voltage switch and the incoming line bar of the corresponding phase in reverse order.

The utility model is a low-voltage switch live overhaul tool with high insulation strength. It can reach more than 20kV/min, which meets the safety requirements of live work, and is widely applicable to European-style box-type transformers.

A live overhaul tool for a low-voltage switch of the utility model, the first three-phase insulating baffle 1, the second three-phase insulating baffle 2, the BC phase insulating baffle 3, the C-phase insulating baffle 4, and the single-phase insulating baffle 5 , easy to install, can ensure an effective safe distance, and is more secure. At the same time, because it is a hard insulating shielding tool, it has a long service life, usually 8-10 years. It is not necessary to apply for a power outage plan for low-voltage switches at 9 o'clock, and the power outage area and outage times are drastically reduced.

A low-voltage switch live maintenance tool of the utility model can ensure the safety of the operation and the personal safety of the operators; the power outage area is reduced from the power outage range of the entire box transformer to the power outage of the low-voltage switch circuit that needs to be repaired, tested or replaced. range, reducing the pre- and post-work for maintenance and testing, and there is no need to apply for a 10 kV power outage plan.

Those of ordinary skill in the art should recognize that the above embodiments are only used to illustrate the utility model, rather than as a limitation to the utility model, as long as within the spirit of the utility model, the above-mentioned The changes and modifications of the embodiments will all fall within the scope of the claims of the present utility model.

Claims (5)

1. A live maintenance tool for a low-voltage switch, characterized in that: it comprises a first three-phase insulating baffle, a second three-phase insulating baffle, a BC phase insulating baffle, a C-phase insulating baffle, a single-phase insulating baffle and an insulating operating wrench; The first three-phase insulating baffle is composed of a first left side plate, a first right side plate, a first top plate and a first front side plate, and the first left side plate and the first right side plate are arranged symmetrically. There are three busbar slots; The second three-phase insulating baffle is composed of a second left side plate, a second right side plate, a second top plate and a second front side plate, and the second left side plate and the second right side plate are arranged symmetrically. There are three busbar slots; The BC-phase insulating baffle is composed of a third left side plate, a third right side plate, a third top plate and a third front side plate, and the third left side plate and the third right side plate are symmetrically arranged with two Root bus slot; The phase C insulating baffle is composed of a fourth left side plate, a fourth right side plate, a fourth top plate and a fourth front side plate, and the fourth left side plate and the fourth right side plate are symmetrically provided with a bus slot; The single-phase insulation baffle is a flat plate with a horizontal slot. 2. A low-voltage switch live overhaul tool according to claim 1, characterized in that: the first top plate of the first three-phase insulation baffle is provided with a clamp that can be connected to the zero-line incoming line row of the low-voltage switch. Zero line incoming line card slot; The third top plate of the BC-phase insulation baffle is provided with an A-phase incoming line row card slot that can be connected to the A-phase incoming line row of the low-voltage switch; The fourth top plate of the C-phase insulating baffle is provided with a B-phase incoming line bar card slot that can be snapped into the B-phase incoming line bar of the low-voltage switch. 3. A low-voltage switch live overhaul tool according to claim 1, characterized in that: said first three-phase insulating baffle is of the same height as said second three-phase insulating baffle, and said BC-phase insulating baffle The height is lower than the height of the first three-phase insulation barrier, and the height of the C-phase insulation barrier is lower than the height of the BC-phase insulation barrier. 4. A low-voltage switch live maintenance tool according to claim 1, characterized in that: the first three-phase insulation barrier, the second three-phase insulation barrier, the BC phase insulation barrier, the Both the C-phase insulating baffle and the single-phase insulating baffle are made of transparent insulating materials. 5. A low-voltage switch live overhaul tool according to claim 1, characterized in that: the insulating operation wrench is a first insulating operating wrench or a second insulating operating wrench; The first insulated operating wrench includes a sleeve part for operating a low-voltage switch, a rotating part for rotating the sleeve part, and the rotation part and the sleeve part pass through the same sleeve part as the sleeve part. shaft connection shaft connection; The second insulated operating wrench includes a wrench body for operating a low-voltage switch, and a handle connected to the tail end of the wrench body.