CN211981153U

CN211981153U - Switch cabinet electric energy distribution protection device

Info

Publication number: CN211981153U
Application number: CN202020699693.9U
Authority: CN
Inventors: 张春华; 张孝强; 关顺锴; 张建辉; 王勐; 张珍珠; 张皓宇; 李明宇; 李春扬; 徐一绯; 崔宇; 马勇明
Original assignee: Dandong Electric Power Prospecting Design Institute
Current assignee: Liaoning Zhengxin Electric Power Design Co.,Ltd.
Priority date: 2020-04-30
Filing date: 2020-04-30
Publication date: 2020-11-20
Anticipated expiration: 2030-04-30

Abstract

The utility model discloses a cubical switchboard electric energy distribution protection device adopts double-deck little bus structure, the cubical switchboard cabinet top is arranged in to double-deck little bus structure, double-deck little bus includes 21 altogether, and 10 are arranged to the lower floor, and 11 are arranged on the upper strata, double-deck little bus arrangement order is arranged from the lower floor to the upper strata in proper order, and every layer is arranged from the cabinet to arranging behind the cabinet. The utility model is provided with a double-layer small bus structure to distribute and protect the electric energy of the switch cabinet, has good effect, saves secondary cables and simplifies the loop; due to the structural design of the multilayer small buses, the phenomenon that short circuit is easy to occur when two sections of the cabinet top small buses are operated in parallel is also fully avoided.

Description

Switch cabinet electric energy distribution protection device

Technical Field

The utility model belongs to the technical field of electric power facility safe operation equipment, a cubical switchboard electric energy distribution protection device is related to.

Background

The switch cabinet needs some instruments and equipment, such as inductive maintenance equipment, a temperature and humidity controller and the like, maintenance in the cabinet needs to check the equipment requirements at any time and maintain the equipment of the switch cabinet, and therefore a small bus structure is introduced;

in the past, a relay protection small bus in a 10kV distribution switch cabinet of a transformer substation in an electric power system often generates short circuit and burns down equipment, so that a distribution power supply line trips, and power supply reliability and safety production are affected.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims to provide a cubical switchboard electric energy distribution protection device, including the little generating line that bilayer structure arranged, it demonstrates that it has good result of use through on-the-spot investigation research.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a cubical switchboard electric energy distribution protection device, the device adopt double-deck little generating line structure, the cubical switchboard cabinet top is arranged in to double-deck little generating line structure, double-deck little generating line includes 21 altogether, and 10 are arranged to the lower floor, and 11 are arranged to the upper strata, double-deck little generating line is arranged the order and is arranged from the lower floor to the upper strata in proper order, and every layer is arranged from the cabinet to arranging behind the cabinet.

Further, the small bus bar is a phi 60 copper bar, and a heat-shrinkable sleeve is sleeved outside the copper bar.

Furthermore, the double-layer small bus structures are respectively fixed on the insulating supports, and the insulating supports are placed on the top of the switch cabinet through the auxiliary frame.

Furthermore, the small bus is fixed on the insulating support through double-bolt compression joint, and the power line and the equipment power line in the switch cabinet penetrate out of the upper end of the switch cabinet and are connected with the corresponding small bus through the wiring terminal.

Further, the auxiliary frame includes vertical frame, diaphragm portion and vertical frame swing joint, the diaphragm portion includes first diaphragm, second diaphragm, is equipped with two V-arrangement draw-in grooves that the symmetry set up on the vertical frame, the afterbody of diaphragm portion is equipped with the fixed part, be equipped with on the fixed part with V-arrangement draw-in groove assorted V-arrangement is protruding, diaphragm portion and vertical frame realize the activity fixedly through the protruding looks joint with the V-arrangement draw-in groove of V-arrangement.

Further, two fixing baffle plates are symmetrically arranged at two ends of the vertical frame and comprise an integrally formed baffle body and fixing blocks at two ends, the fixing blocks and the baffle body form an angle of 90 degrees, the fixing blocks at two ends are fixed on the vertical frame through threaded bolt structures, the insulating support loaded with the first layer of small buses is placed on the first transverse plate, and the insulating support loaded with the second layer of small buses is placed on the second transverse plate. .

The utility model has the advantages that:

the utility model is provided with a double-layer small bus structure to distribute and protect the electric energy of the switch cabinet, has good effect, saves secondary cables and simplifies the loop; due to the structural design of the multilayer small buses, the phenomenon that short circuit is easy to occur when two sections of the cabinet top small buses are operated in parallel is also fully avoided.

Drawings

The present invention will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic front view of the present invention;

FIG. 3 is a schematic structural view of the auxiliary frame of the present invention;

fig. 4 is an exploded view of a cable support structure used in the embodiment of the present invention.

Detailed Description

Please refer to fig. 1, which is described in detail with reference to the following embodiments:

as shown in figure 1, the device adopts a double-layer small bus structure, the double-layer small bus structure is arranged on the top of a switch cabinet 1, the double-layer small buses totally comprise 21, the lower layer 2 is arranged with 10, the upper layer 3 is arranged with 11, the arrangement sequence of the double-layer small buses is that the double-layer small buses are sequentially arranged from the lower layer to the upper layer, and each layer of arrangement is arranged from the cabinet to the cabinet back. The terminal names and positions are shown in table 1.

TABLE 1 double-layer Small bus terminal name and position

Fig. 4 shows a design diagram of a cabinet top small bus.

The small bus is phi 60 copper bar, the copper bar is sleeved with a heat-shrinkable sleeve.

The double-layer small bus is arranged on the top of the switch cabinet through the auxiliary frame;

as shown in fig. 2, which is a schematic structural diagram of the auxiliary frame 4, the auxiliary frame 4 includes a vertical frame 41 and a horizontal plate portion 42, the horizontal plate portion 42 is movably connected with the vertical frame 41, the horizontal plate portion 41 includes a first horizontal plate and a second horizontal plate, two rows of V-shaped slots 43 are symmetrically arranged on the vertical frame 41, a fixing portion 44 is arranged at the tail portion of the horizontal plate portion 42, a V-shaped protrusion 441 matched with the V-shaped slot 43 is arranged on the fixing portion 44, the horizontal plate portion 42 and the vertical frame 41 are movably fixed by the V-shaped protrusion 441 and the V-shaped slot 43, two ends of the vertical frame 41 are symmetrically provided with two fixing baffles 45, each fixing baffle 45 includes an integrally formed baffle body 451 and fixing blocks 452 at two ends, the fixing blocks 452 and the baffle body 451 form an angle of 90 degrees, the fixing blocks 452 at two ends are fixed on the vertical frame 41 by a threaded bolt structure, and a gap is left between the baffle body 451 and the vertical frame 41, the gap is equal to the thickness of the fixing portion 44, so that two ends of the fixing portion of the first transverse plate and the second transverse plate are embedded into the fixing baffle plate, the fixing baffle plate and the V-shaped clamping groove 43 and the V-shaped protrusion 441 have the effect of fixing the first transverse plate and the second transverse plate in a double mode, the insulating support loaded with the first layer of small buses is placed on the first transverse plate, the insulating support loaded with the second layer of small buses is placed on the second transverse plate, the position of the transverse plate portion on the vertical frame can be adjusted freely through the structural design of the insulating support, the number of the transverse plates in the transverse plate portion can be increased freely, and therefore the multi-layer small bus structure is arranged at random.

The double-layer small bus bars are respectively fixed on the insulating supports 46, which are placed on the horizontal plate portion of the auxiliary frame 4.

The small bus is fixed on the insulating support by adopting double-bolt crimping, and the power line 47 and the equipment power line in the switch cabinet penetrate out from the upper end of the switch cabinet 1 and are connected with the corresponding small bus through the wiring terminal.

In the prior art, a relay protection small bus in a switch cabinet often generates short circuit and burns out equipment, the original small bus is provided with defects, a single-phase power supply (l, N) is input by an alternating current power supply, the short circuit phenomenon does not occur when the small bus on the top of the switch cabinet is split and operated, but when the small bus on the top of the switch cabinet is operated in parallel, one section of alternating current connection (A, N) is easily caused due to imprecise design and construction, and the other section of alternating current connection (B, N) combines the small bus disconnecting switches of the sectional cabinets, the short circuit phenomenon occurs.

Adopt the utility model discloses the double-deck little generating line structure that sets up, what two sections little generating line alternating current power supply insert is three phase current source (AB, N) at this moment when the little generating line switch of segmentation cabinet merges, just is difficult to take place short circuit phenomenon, has still increased in the double-deck little generating line and has prevented mistake blocking power little generating line and signal little generating line power little generating line.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. The utility model provides a cubical switchboard electric energy distribution protection device, its characterized in that, the device adopt double-deck little generating line structure, the cubical switchboard cabinet top is arranged in to double-deck little generating line structure, the double-deck little generating line includes 21 altogether, and 10 are arranged to the lower floor, and 11 are arranged on the upper strata, double-deck little generating line arrangement order is arranged from the lower floor to the upper strata in proper order, and every layer is arranged from the cabinet to arranging behind the cabinet.

2. The switchgear cabinet electric energy distribution protection device according to claim 1, wherein the small bus bar is phi 60 copper bar, and the copper bar is externally sleeved with a heat-shrinkable sleeve.

3. The switch cabinet electric energy distribution protection device of claim 1, wherein the double-layer small bus structures are respectively fixed on insulating supports, and the insulating supports are placed on the top of the switch cabinet through auxiliary frames.

4. The switch cabinet electric energy distribution protection device according to claim 3, wherein the small bus bars are fixed on the insulating support by double-bolt crimping, and the power line and the equipment power line in the switch cabinet penetrate out from the upper end of the switch cabinet and are connected with the corresponding small bus bars through the wiring terminals.

5. The switch cabinet electric energy distribution protection device according to claim 3, wherein the auxiliary frame comprises a vertical frame and a transverse plate portion, the transverse plate portion is movably connected with the vertical frame, the transverse plate portion comprises a first transverse plate and a second transverse plate, two rows of V-shaped clamping grooves are symmetrically arranged on the vertical frame, a fixing portion is arranged at the tail portion of the transverse plate portion, a V-shaped protrusion matched with the V-shaped clamping grooves is arranged on the fixing portion, and the transverse plate portion and the vertical frame are movably fixed through the clamping connection of the V-shaped protrusion and the V-shaped clamping grooves.

6. The switch cabinet electric energy distribution protection device according to claim 5, wherein two fixing baffles are symmetrically arranged at two ends of the vertical frame, each fixing baffle comprises an integrally formed baffle body and fixing blocks at two ends, the fixing blocks and the baffle body form an angle of 90 degrees, the fixing blocks at two ends are fixed on the vertical frame through a threaded bolt structure, the insulating support loaded with the first layer of small buses is placed on the first transverse plate, and the insulating support loaded with the second layer of small buses is placed on the second transverse plate.