CN218732680U

CN218732680U - Switch cabinet

Info

Publication number: CN218732680U
Application number: CN202222834180.6U
Authority: CN
Inventors: 龚进; 马健; 胡建刚
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-03-24
Anticipated expiration: 2032-10-28

Abstract

A switch cabinet belongs to the technical field of low-voltage electrical appliances. Including the cabinet body the top of the cabinet body is provided with horizontal bus-bar room, is provided with the bus-bar room in the below rear side of horizontal bus-bar room the bottom of the cabinet body is provided with the bottom back door, the indoor generating line that is provided with of bus-bar, characteristics are: the switch cabinet further comprises an air guide channel device which is arranged at the lower part in the bus chamber and provided with an air inlet fan, one end of the air guide channel device is arranged on an air inlet of the bottom rear door to be communicated with the outside, the other end of the air guide channel device is arranged below a bus in the bus chamber, so that air is fed into the air inlet, and finally a first heat dissipation air channel A for exhausting air from the top of the cabinet body is formed through the air guide channel device, the upper part of the bus chamber and the horizontal bus chamber. The advantages are that: have good radiating effect, the temperature rise of each part in the effective control cubical switchboard reduces the risk that arouses because of the temperature rise is too high.

Description

Switch cabinet

Technical Field

The utility model belongs to the technical field of low-voltage apparatus, concretely relates to cubical switchboard.

Background

The low-voltage power distribution cabinet is widely applied to power distribution and control centers in the fields of large power generation plants, petroleum and petrochemical industry, national power grids and the like. With the improvement of the protection grade and the internal isolation grade of the switch cabinet and the requirement of capacity reduction coefficient over 0.8, the unsmooth air inlet and heat dissipation can be undoubtedly brought, so that the temperature rise is difficult to control. For a large-current switch cabinet with the voltage of 5000A or above, temperature rise control is very important, and with the increase of bus current, great current density is caused, a contact of a circuit breaker can form a conductive spot, so that great joule heat is generated, and the heating of the connection position of a wire inlet and outlet pile head of the circuit breaker in the switch cabinet and the heating of a busbar are obviously increased.

The interior of the inlet wire cabinet provided by the prior art is often not smooth in ventilation and heat dissipation due to the influence of factors such as large ventilation wind resistance caused by blocking or plugging of various components, buses and partition plates, so that the temperature rise of a main bus system at the top and at the junction of an inlet wire pile head and an outlet wire pile head of a circuit breaker is often difficult to meet a standard specified value. The inside abominable temperature rise environment of cubical switchboard often leads to the temperature rise of circuit breaker main contact junction too high or be in near the critical value, has huge risk, causes very easily to bring serious incident because of circuit breaker main contact scaling loss.

In view of the above-mentioned prior art, there is a need for a reasonable improvement of the internal ventilation structure of the existing switch cabinet. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The task of the utility model is to provide a switch cabinet, it has set up two heat dissipation wind channels, and the use of fan has in addition reached good radiating effect, and the risk that reduces because of the temperature rise is too high arouses in the temperature rise of each part in the effective control switch cabinet.

The utility model discloses a task is accomplished like this, a switch cabinet, including the cabinet body the top of the cabinet body is provided with horizontal bus-bar room, is provided with the generating line room in the below rear side of horizontal bus-bar room the bottom of the cabinet body is provided with the bottom back door, be provided with the generating line in the generating line room, the switch cabinet is still including a setting air duct device who has the air intake fan in the generating line room, air duct device's one end setting realizes being linked together with the outside on the air intake of bottom back door, and the other end sets up the generating line below in the generating line room, has just so formed the air intake air inlet, through air duct device, generating line room upper portion, horizontal bus-bar room, finally follows the first heat dissipation wind channel A of cabinet body top air-out.

The utility model discloses a concrete embodiment, below front side at horizontal generating line room is provided with the circuit breaker room, the indoor circuit breaker that is provided with of circuit breaker, the circuit breaker including set up from top to bottom and visit into the indoor first terminal and the second terminal of generating line, the generating line that sets up in the generating line room includes first generating line and second generating line, the one end of first terminal and first generating line link to each other, the other end of first generating line links to each other with the indoor horizontal generating line of horizontal generating line, the one end of second terminal and second generating line link to each other, the other end of second generating line is visited out the cabinet body and is connected with external circuit.

In another specific embodiment of the present invention, the air guiding channel device further includes an air guiding channel body, the air guiding channel body is a L-shaped pipeline, the first opening of the air guiding channel body is horizontally disposed and connected to the air inlet of the switch cabinet, and the second opening of the air guiding channel body is vertically disposed.

In another specific embodiment of the present invention, the air inlet fan is disposed at the first opening, and the number of the air inlet fans is one or more.

In another specific embodiment of the present invention, the air inlet fan is disposed at the second opening, and the number of the air inlet fans is one or more than one.

In yet another specific embodiment of the present invention, the air inlet fan is aligned with the second terminal.

The utility model discloses a and then a concrete embodiment, the cubical switchboard still is formed with from the bottom or the bottom front side air inlet of the cabinet body, through the circuit breaker room, upwards again through horizontal bus-bar room, finally follows the second heat dissipation wind channel B of cabinet body top air-out.

The utility model discloses a more and a concrete embodiment horizontal generating line room and circuit breaker room between be provided with the instrument room, circuit breaker setting in the circuit breaker room is on circuit breaker storehouse layer board on be provided with first louvre, circuit breaker room and instrument room between be provided with the instrument storehouse layer board, the instrument storehouse layer board on be provided with the second louvre, be provided with instrument room top baffle between instrument room and horizontal generating line room, instrument room top baffle on be provided with the third louvre, the bottom of the cabinet body is provided with the ventilation hole, the below front side of circuit breaker room is provided with down the cowl, forms from down cowl and ventilation hole air inlet, gets into the circuit breaker room through the first louvre of circuit breaker storehouse layer board, then gets into the instrument room through the second louvre on the instrument storehouse layer board, then gets into horizontal generating line room through the third louvre of instrument room top baffle, finally follows the second heat dissipation wind channel B of cabinet body top air-out.

The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: first heat dissipation wind channel A and the second heat dissipation wind channel B that form under the inside prerequisite of accomplishing high isolation level of cubical switchboard possess good upwards and pull out the wind effect, utilize air intake fan to supply air with higher speed among the wind-guiding passageway device in first heat dissipation wind channel A simultaneously, the inside of top cap is provided with the air outlet fan and goes out with higher speed, temperature rise requirement when can satisfying great current 6300A above can be satisfied, the reliability of inlet wire cubical switchboard has been improved greatly, reduce the risk because of the temperature rise is too high and arouses.

Drawings

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

Fig. 2 is a schematic structural view of the air guide passage device of the present invention.

Fig. 3 is the structure schematic diagram of circuit breaker storehouse layer board.

Fig. 4 is a schematic structural view of the instrument bin supporting plate of the present invention.

Fig. 5 is a schematic structural view of the top partition of the instrument room of the present invention.

In the figure: 1. the cabinet comprises a cabinet body, 11 horizontal bus chambers, 111 horizontal buses, 112 top plates, 12 breaker chambers, 13 bus chambers, 131 first buses, 132 second buses, 14 bottom rear doors, 141 air inlets, 15 instrument chambers; 2. the circuit breaker comprises a circuit breaker, 21, a first terminal, 22 and a second terminal; 3. the air guide channel device comprises an air guide channel device 30, an air guide channel body 31, an air inlet fan 32, a first opening 33 and a second opening; 4. a top cover; 5. an air outlet fan; 6. an air outlet ventilation grid; 7. a breaker compartment pallet, 71, a first heat sink; 8. instrument bin supporting plates, 81 and second heat dissipation holes; 9. a top partition of the instrument room, 91, a third heat dissipation hole; 10. an air inlet ventilation grid; 20. a lower draft hood; A. a first heat dissipation air duct; B. and the second heat dissipation air duct.

Detailed Description

The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, but the description of the embodiments is not intended to limit the technical solutions, and any changes made in the form of the present invention rather than the essential changes should be considered as the protection scope of the present invention.

In the following description, any concept relating to the directions or orientations of up, down, left, right, front, and rear is based on the position shown in the corresponding drawings, and thus should not be construed as particularly limiting the technical solution provided by the present invention.

Referring to fig. 1, the utility model relates to a switch cabinet, including the cabinet body 1 the top of the cabinet body 1 is provided with horizontal bus-bar room 11, seted up the ventilation hole on the roof 112 of horizontal bus-bar room 11, be provided with top cap 4 in the ventilation hole, the inside of top cap 4 is provided with air outlet fan 5, and the top of top cap 4 is provided with air outlet air grid 6, and according to the size of top cap 4, the quantity of air outlet air grid 6 can be a plurality ofly, for example two or three. And a dust screen is arranged in the air outlet ventilation grating 6 to ensure that the protection grade meets IP40.

Continuing to refer to fig. 1, a circuit breaker chamber 12 and a bus chamber 13 are arranged in front of and behind the lower portion of the horizontal bus chamber 11, a circuit breaker 2 is arranged in the circuit breaker chamber 12, the circuit breaker 2 comprises a first binding post 21 and a second binding post 22 which are arranged up and down and extend into the bus chamber 13, the first binding post 21 is connected with one end of a first bus 131 in the bus chamber 13, the other end of the first bus 131 is connected with a horizontal bus 111 in the horizontal bus chamber 11, the second binding post 22 is connected with one end of a second bus 132 in the bus chamber 13, and the other end of the second bus 132 extends out of the cabinet body 1 and is connected with an external circuit. A bottom rear door 14 is arranged at the rear side of the bottom of the cabinet body 1, and an air inlet 141 is arranged on the bottom rear door 14. And the corresponding interior of the bottom rear door 14 is the lower portion of the bus bar compartment 13. An intake vent grill 10 is provided outside the intake port 141.

In order to increase the heat dissipation effect, the switch cabinet further comprises an air guiding channel device 3 arranged at the lower part in the bus bar chamber 13, one end of the air guiding channel device 3 is arranged on an air inlet 141 of the bottom rear door 14 to realize communication with the outside, the other end of the air guiding channel device 3 is arranged below the second terminal 22, and various bus bars in the bus bar chamber 13 are positioned above the air guiding channel device 3, namely, positioned at the upper part of the bus bar chamber 13. Thus, a first heat dissipation air duct a is formed, wherein air is supplied from the air inlet 141, passes through the air guiding passage device 3, the upper part of the bus chamber 13 and the horizontal bus chamber 11, and finally is discharged from the top of the cabinet 1.

As shown in fig. 2, the air guiding passage device 3 includes an air guiding passage body 30 and an air inlet fan 31, the air guiding passage body 30 is an L-shaped duct, a first opening 32 of the air guiding passage body 30 is arranged in a horizontal direction and is connected with an air inlet 141 of the switch cabinet, and a second opening 33 of the air guiding passage body 30 is arranged in a vertical direction.

The number of the air inlet fans 31 arranged inside the first opening 32 may be one or more, and in this embodiment, the number of the air inlet fans 31 arranged at the first opening 32 is three. The installation is more convenient, and the maintenance and replacement safety is high.

The air inlet fan 31 may also be disposed outside the second opening 33, and the number may be one or more. In this embodiment, the number of the air inlet fans 31 provided in the second opening 33 is also three, and mainly corresponds to the number of the first terminals 21 or the second terminals 22.

The shape of the first opening 32 can be set arbitrarily as long as it is connected to the air inlet 141 smoothly, and in this embodiment, the shape of the first opening 32 is rectangular. The second opening 33 may also be arbitrarily configured, and in this embodiment, is also configured to be rectangular.

Continuing to refer to fig. 1, the cubical switchboard still have second heat dissipation wind channel B, second heat dissipation wind channel B can follow the bottom front side air inlet of the cabinet body 1, through circuit breaker room 12, upwards again through horizontal bus-bar room 11, finally follow the air-out at 1 top of the cabinet body.

Specifically, as shown in fig. 1 and 3 to 5, an instrument room 15 is arranged between the horizontal bus room 11 and the breaker room 12, the breaker 2 in the breaker room 12 is arranged on a breaker cabin supporting plate 7, a first heat dissipation hole 71 is arranged behind the breaker cabin supporting plate 7, as shown in fig. 3, the first heat dissipation hole 71 is arranged in a row, and the first heat dissipation hole 71 is aligned with a heat dissipation row hole at a contact of a breaker body. An instrument chamber supporting plate 8 is arranged between the breaker chamber 12 and the instrument chamber 15, and a second heat dissipation hole 81 is formed in the instrument chamber supporting plate 8, as shown in fig. 4. An instrument room top partition 9 is arranged between the instrument room 15 and the horizontal bus bar room 11, and a third heat dissipation hole 91 is formed in the instrument room top partition 9, as shown in fig. 5. The bottom of the cabinet body 1 is provided with the ventilation hole the below front side of circuit breaker room 12 is provided with down draft hood 20, like this, outside gas gets into cabinet body 1 back from draft hood 20 and ventilation hole down, gets into circuit breaker room 12 through the first louvre 71 of circuit breaker storehouse layer board 7, then gets into instrument room 15 through second louvre 81 on the instrument storehouse layer board 8, gets into horizontal generating line room 11 through the third louvre 91 of instrument room top baffle 9 after that, finally through top cap 4, the cabinet body 1 of air outlet air grid 6 discharge, just so formed second heat dissipation wind channel B.

Claims

1. The utility model provides a switch cabinet, includes the cabinet body (1) the top of the cabinet body (1) is provided with horizontal generating line room (11), is provided with generating line room (13) in the below rear side of horizontal generating line room (11) the bottom of the cabinet body (1) is provided with bottom back door (14), be provided with the generating line in generating line room (13), its characterized in that: the switch cabinet further comprises an air guide channel device (3) which is arranged in the bus chamber (13) and provided with an air inlet fan (31), one end of the air guide channel device (3) is arranged on an air inlet (141) of the bottom rear door (14) to be communicated with the outside, the other end of the air guide channel device is arranged below a bus in the bus chamber (13), and therefore air entering from the air inlet (141) is formed, and finally the air passes through the air guide channel device (3), the upper portion of the bus chamber (13) and the horizontal bus chamber (11) and finally flows out from the top of the cabinet body (1) to form a first heat dissipation air duct A.

2. A switchgear cabinet according to claim 1, characterized in that: be provided with circuit breaker room (12) in the below front side of horizontal generating line room (11), circuit breaker room (12) in be provided with circuit breaker (2), circuit breaker (2) set up and visit first terminal (21) and second terminal (22) in generating line room (13) including from top to bottom, the generating line that sets up in generating line room (13) includes first generating line (131) and second generating line (132), first terminal (21) link to each other with the one end of first generating line (131), the other end of first generating line (131) links to each other with horizontal generating line (111) in horizontal generating line room (11), the one end of second terminal (22) and second generating line (132) link to each other, the other end of second generating line (132) is visited cabinet body (1) and is connected with external circuit.

3. A switchgear cabinet according to claim 1, characterized in that: air guide channel device (3) still including air guide channel body (30), air guide channel body (30) for being the pipeline of L type, first opening (32) of air guide channel body (30) are the horizontal direction setting and are connected with air intake (141) of cubical switchboard, second opening (33) of air guide channel body (30) are vertical direction setting.

4. A switchgear cabinet according to claim 3, characterized in that: the air inlet fan (31) is arranged at the first opening (32), and the number of the air inlet fans is one or more.

5. A switchgear cabinet according to claim 3, characterized in that: the air inlet fan (31) is arranged at the second opening (33), and the number of the air inlet fans is one or more.

6. A switchgear cabinet according to claim 2, characterized in that: and the air inlet fan (31) is over against the second binding post (22).

7. A switchgear cabinet according to claim 2, characterized in that: the switch cabinet is also provided with a second heat dissipation air duct B which is used for supplying air from the bottom or the front side of the bottom of the cabinet body (1), passing through the breaker chamber (12), then upwards passing through the horizontal bus chamber (11) and finally discharging air from the top of the cabinet body (1).

8. A switchgear cabinet according to claim 7, characterized in that: horizontal bus-bar room (11) and circuit breaker room (12) between be provided with instrument room (15), circuit breaker (2) in circuit breaker room (12) set up on circuit breaker storehouse layer board (7) on be provided with first louvre (71), circuit breaker room (12) and instrument room (15) between be provided with instrument storehouse layer board (8), instrument storehouse layer board (8) on be provided with second louvre (81), be provided with instrument roof baffle (9) between instrument room (15) and horizontal bus-bar room (11), instrument roof baffle (9) on be provided with third louvre (91), the bottom of the cabinet body (1) is provided with the louvre, the below front side of circuit breaker room (12) is provided with down cowling (20), forms from down cowling (20) and air inlet hole, gets into circuit breaker room (12) through first louvre (71) of circuit breaker storehouse layer board (7), then gets into instrument room (15) through the last air outlet duct of second busbar room layer board (11) and get into the cabinet body (11) from second heat dissipation roof (91) top of the second heat dissipation hole, then get into the cabinet body (11) from second heat dissipation room (9).