CN203660363U - Portable cable load quick transfer device in emergency condition - Google Patents

Abstract

The utility model discloses a portable cable load quick transfer device in emergency condition. The portable cable load quick transfer device in emergency condition comprises a load transfer box body, copper busbars fixedly connected inside the load transfer box body by insulating supporting bottles, and simple matching joints. The inner wall of the load transfer box body is provided with cable holes, the busbars are provided with fixing screws corresponding to the cable holes, the busbars comprise an A-phase busbar, a B-phase busbar, and a C-phase busbar. The portable cable load quick transfer device of the utility model is simple in structure, is convenience, practical, safe and reliable, is wide in positional selectivity, is less affected by geographical position and space, and can at least supply two channels of loads in the case that the load is allowed. When an important cable line breaks down and can not be repaired quickly, especially for government important organs and units or when significant recreational and sports activities are held, the portable cable load quick transfer device is used to perform power transfer, thereby greatly shortening power-failure time, and raising power supply reliability. The portable cable load quick transfer device can be widely used for the breakdown repair of a city 10kv power supply distribution network.

Description

A Portable Cable Load Quick Switching Device in Accident State

technical field

The utility model relates to a cable load fast switching device, in particular to a portable cable load fast switching device in an accident state, which belongs to the field of electric equipment maintenance.

Background technique

At present, urban construction is changing with each passing day, and the living conditions of residents are getting better and better. With the improvement of the living conditions of urban residents, the residents' dependence on electricity has gradually increased, and the electricity load has increased greatly. With the strengthening of the transformation of the national power grid, although the quality of power grid equipment has improved and the number of accidents has decreased, there are still problems of varying degrees in the design, manufacture, installation, operation and maintenance of some power equipment. There are still potential safety hazards such as poor insulation level, non-compliance with the protection level, and insufficient explosion-proof capability in the institute and the ring network cabinet. Once an unexpected failure occurs in the operating switchgear, it will bring great inconvenience to the life and work of the power supply users.

When an accident occurs in the station interval, switching station, ring network cabinet and other equipment, the replacement of switches and protection equipment needs to involve multiple departments and manufacturers, and the installation and commissioning time is long. In order to restore the load power supply in time, we need to remove the cable from the fault interval Inverting into the spare interval has the following disadvantages: On the one hand, the process is greatly affected by the cable margin and the site environment, and the cable may not be withdrawn from the fault interval, and even if it can be withdrawn, it will take a lot of manpower and time. After a fault, the average time-consuming process of connecting the cables in the fault interval to the backup interval takes more than 2 hours. When faults occur in multiple intervals, the time-consuming process increases exponentially. The work efficiency is relatively low, and the user's power outage time On the other hand, due to the influence of space, environment, technology and other factors during cable laying, the cable margin is extremely limited, and the station interval, switch station interval, ring network cabinet interval, cable distribution box interval, cable The space where cables are laid such as trenches is very narrow, and it is difficult and time-consuming to move the reserved cables needed to deal with accidents to spare intervals. Especially for important users such as governments, hospitals, factories, etc., even a very short power outage time will cause great losses.

Utility model content

The technical problem to be solved by the utility model is to provide a portable cable load fast switching device that can quickly realize the power supply function when an unexpected failure occurs in the power equipment switch cabinet, save manpower and material resources, is convenient to disassemble, and is safe and reliable in operation.

In order to solve the above-mentioned technical problems, the technical solution adopted by the utility model is: a portable cable load quick transfer device in an accident state, including a load transfer box and a copper cable fixedly connected inside the load transfer box by an insulating support bottle. The inner wall of the load transfer box is provided with cable holes, and the fixed screws corresponding to the cable holes are arranged on the said busbars. The said busbars include A-phase busbars, B-phase busbars and C-phase busbars. busbar.

Further, the portable cable load rapid switching device in an accident state also includes a simple matching joint, which is an insulator.

Further, there are 6 insulating support bottles, and two pairs are correspondingly arranged on the inner wall of the load transfer box, and three pairs of insulating support bottles respectively support the three-phase copper busbars.

Further, the rear wall of the load transfer box is provided with cable holes.

Further, the number of the cable holes is four.

Further, the material of the busbar is selected from copper, which has high electrical conductivity and strong overload capacity.

Further, this utility model is widely applicable to emergency repairs of urban 10kv power supply distribution network failures. In order to ensure safety, in this case, the vertical distance between the A-phase busbar and the B-phase busbar is 22cm, and the vertical distance between the B-phase busbar and the C-phase busbar The horizontal distance between the busbar and the front door is 23cm, the horizontal distance between the busbar and the rear wall is 18cm, and the vertical distance between the phase C busbar and the ground is 77.5cm.

The working principle of the utility model: after being put into use, when the switchgear in the bus room, the switchgear, and the ring network cabinet break down, use the conversion device to connect the cables in the faulty compartment to the conversion device, and then lead the cable from a spare compartment to the The conversion device completes the load transfer and restores the power supply.

The beneficial effects produced by adopting the above-mentioned technical scheme are:

(1) The device is mainly composed of a load transfer box and a simple mating joint. The device is small in size, easy to operate, easy to install, and high in safety. The shell is touchable, rainproof, and moisture-proof. Large, less affected by geographical location and space, if the load permits, at least two loads can be transferred, which greatly shortens the power outage time and improves work efficiency;

(2) Using a portable cable load quick transfer device can avoid difficult operations such as moving the faulty cable to a spare interval during the fault handling process;

(3) After a failure of a single compartment, use a simple mating joint to deal with it. The electrical performance and insulation performance of the simple mating joint are good, ensuring high safety; after multiple compartments fail, use a load transfer box , can realize multi-interval power supply at the same time, and the device is easy to disassemble and assemble, and the time of manpower troubleshooting can be shortened by at least 50%;

(4) When an important cable line fails, especially when an important national agency or unit or major cultural and sports activities are held, and it cannot be quickly repaired and restored, the device can be used to transfer the power supply, which can greatly shorten the power outage time and reduce the power loss. Improve the reliability of power supply, and can be widely used in the repair of urban 10kv power supply distribution network failures.

Description of drawings

Fig. 1 is the structural representation of load transfer box of the present invention;

Fig. 2 is a schematic structural view of the simple butt joint of the utility model;

Fig. 3 is a schematic diagram of the unfolded structure of the simple butt joint of the utility model.

In the drawings: 1 load transfer box, 2 A-phase busbar, 3 cable hole, 4 rear wall, 5 fixing screws, 6 insulating support bottle, 7 B-phase busbar, 8 C-phase busbar, 9 simple pair Pat joint.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

Example 1 An interval fails

As shown in Figure 1 and Figure 2, the utility model is a portable cable load quick transfer device in an accident state, including a load transfer box 1, and a copper mother fixedly connected to the load transfer box 1 by an insulating support bottle 6 row and insulated simple butt joints 9, the rear wall 4 of the load transfer box 1 is provided with 4 cable holes 3, and the number of insulating support bottles is 6, which are correspondingly arranged on the inner wall of the load transfer box 1; Fixing screws 5 corresponding to the cable holes 3 are provided on the three-phase busbars, and the copper busbars include A-phase busbars 2 , B-phase busbars 7 and C-phase busbars 8 . The working process of using the portable cable load converter is as follows: after a fault occurs, just connect the load cable in the fault interval to the converter, and then lead the cable into the converter from the spare interval to restore power supply.

When the switchgear, switchgear, ring network cabinet and other compartments in the bus room break down, if the fault compartment is one, the operation steps are as follows: (1) Wipe the cable terminal head with acetone to clean the surface dirt; (2) Clean the (3) Wrap the terminal head with insulating tape, and wrap three to four layers in a semi-lapping manner; (4) Wrap the terminal head with a small simple butt joint 9 ; (5) Wrap the entire end with a large simple butt joint 9; (6) Connect the ground wire of the cable to complete the processing of a fault at an interval. When not in use, the simple butt joint 9 device needs to be placed in a dry, cool place to ensure that it is well insulated.

When dealing with a fault interval situation, the load transfer box 1 can also be used to realize normal power supply. The method is as follows: use the conversion device placed next to the switch cabinet to connect the cables in the fault compartment to the conversion device, the cables are connected from the cable hole 3 on the rear wall 4 of the load transfer box 1, and the A phase, B phase and C phase of the cable The phases are respectively fixed on A-phase busbar 2, B-phase busbar 7 and C-phase busbar 8 by fixing screws 5, and the same method is used to lead cables from a spare interval to the conversion device. After fixing, the load transfer can be completed, realizing normal power supply. The average time-consuming of the whole process using the same manpower is about 1 hour, which shortens the time of this processing step by at least 50%.

Example 2 Two intervals (multiple intervals) fail

As shown in Figure 1 and Figure 2, when faults occur at intervals such as the switchgear in the bus room, the switch station, and the ring network cabinet, if there are two or more fault intervals, the method is as follows: use the conversion device placed next to the switch cabinet Connect all the cables in the fault compartment to the conversion device, connect the faulty cables from the cable holes 3 on the rear wall 4 of the load transfer box 1, and fix the A phase, B phase and C phase of the cables through the fixing screws 5 respectively. A-phase busbar 2, B-phase busbar 7 and C-phase busbar 8, use the same method to lead the cables from the spare interval to the conversion device. After fixing, the load transfer can be completed and the normal power supply can be realized.

The utility model has a simple structure and is easy to disassemble. In an emergency, the power supply transfer belt can be quickly realized, which improves the work efficiency of the emergency repair of the cable accident, shortens the power outage time, reduces the loss of electric energy, and improves the service quality of the power supply. It is a safe and reliable , High-efficiency accident handling means; the selectivity of the position of the converter is large, and it can be used in narrow cable intervals such as various substations, switching stations, ring network cabinets, etc., and is less affected by geographical location and space. In some cases, at least two loads can be transferred. This greatly shortens the power outage time, improves work efficiency, and is widely used in emergency repairs of urban 10kv power supply distribution network failures.

The above described embodiments are only preferred embodiments of the present utility model, and are not intended to limit the present utility model in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model , all still belong to the scope of the technical solution of the utility model.

Claims (6)

1. portable cable load quick switching device under an accident condition, it is characterized in that it comprises that load turns band casing (1) and is fixedly connected on load by an insulation bottle (6) and turns the inner copper busbar of band casing (1), described load turns band casing (1) inwall and is provided with cable aperture (3), on described busbar, be provided with the fixed screw (5) corresponding with cable aperture (3), described busbar comprises A phase busbar (2), B phase busbar (7) and C phase busbar (8).

2. portable cable load quick switching device under a kind of accident condition according to claim 1, is characterized in that: this device also comprises simple and easy to clapping joint (9).

3. portable cable load quick switching device under a kind of accident condition according to claim 1, is characterized in that: it is 6 that bottle is propped up in described insulation, and correspondence is arranged on to load and turns band casing (1) inwall between two.

4. portable cable load quick switching device under a kind of accident condition according to claim 1, is characterized in that: described load turns band casing (1) rear wall (4) and is provided with cable aperture (3).

5. portable cable load quick switching device under a kind of accident condition according to claim 1, is characterized in that: described cable aperture (3) number is 4.

6. according to portable cable load quick switching device under a kind of accident condition described in arbitrary claim in claim 1 to 5, it is characterized in that: described A phase busbar (2) is 22cm with B phase busbar (7) vertical range, B phase busbar (7) and C phase busbar (8) vertical range are 22cm, described busbar and Qianmen horizontal range are 23cm, described busbar and rear wall (4) horizontal range is 18cm, and described C phase busbar (8) distance perpendicular to the ground is 77.5cm.

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