CN218216294U

CN218216294U - Heat radiation structure of large-current switch cabinet

Info

Publication number: CN218216294U
Application number: CN202222493794.2U
Authority: CN
Inventors: 肖彬
Original assignee: Sichuan Zhongxin General Electric Power Co ltd
Current assignee: Sichuan Zhongxin General Electric Power Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-01-03
Anticipated expiration: 2032-09-19

Abstract

The utility model discloses a heavy current cubical switchboard heat radiation structure relates to the cubical switchboard field. The handcart type bus cabinet comprises a cabinet body, wherein a handcart room and a bus room are arranged in the cabinet body, a fan room is arranged at the top of the cabinet body, a plurality of exhaust fans are arranged in the fan room, and the fan room is communicated with the cabinet body through an exhaust inlet arranged at the bottom end; the spoiler is arranged at the air suction opening, and the vent hole is formed in the vertical plate between the handcart room and the bus room. The utility model discloses a set up the fan room at cabinet body top, use the fan of airing exhaust to siphon away the internal heat of cabinet and discharge to make the passive heat dissipation of cubical switchboard become the initiative heat dissipation, make the heat in the cubical switchboard discharge sooner, avoid the high temperature in the cubical switchboard, thereby increase the life of equipment.

Description

Heat radiation structure of large-current switch cabinet

Technical Field

The utility model relates to a cubical switchboard field, concretely relates to heavy current switch cabinet heat radiation structure.

Background

A switchgear is a complete set of switchgear and control equipment suitable for use in a three-phase ac 50Hz power system for receiving and distributing electrical energy and for controlling, protecting and testing electrical circuits. The voltage class can be divided into 0.4kV, 12kV and 35kV equipment. When 12kV, 35kV equipment uses, because the electric current is great, equipment generates heat more seriously, if switchgear can't distribute away the heat that produces, the heat accumulation is in narrow and small switchgear, can lead to inside high temperature, the insulating aging destroys insulating medium even with higher speed, thereby the conflagration that takes place burns out equipment, and switchgear undertakes and accepts and distributes the electric energy effect, in case take place equipment to burn out, can cause production to subtract and produce and equipment to damage, and general heavy current equipment is great worth, subordinate's power supply load is heavier, in case cause equipment to burn out the influence very big. In the prior art, for example, CN105322456a discloses a high-current switch cabinet with high heat dissipation efficiency, passive heat dissipation of a cabinet body provided with vent holes and a heightening box is adopted to dissipate heat of the switch cabinet, and this way mainly depends on temperature difference to make air flow, but this way easily causes heat accumulation of equipment, and it is difficult to effectively control the temperature in the internal space of the switch cabinet.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art's the aforesaid, the utility model provides a great current switch cabinet heat radiation structure of initiative heat dissipation formula that the radiating effect is better.

In order to achieve the above object, the utility model adopts the following technical scheme:

the heat dissipation structure comprises a cabinet body, wherein a handcart chamber and a bus chamber are arranged in the cabinet body, a fan chamber is arranged at the top of the cabinet body, a plurality of exhaust fans are arranged in the fan chamber, and the fan chamber is communicated with the cabinet body through an exhaust inlet arranged at the bottom end; the spoiler is arranged at the air suction opening, and the vent hole is formed in the vertical plate between the handcart room and the bus room.

Furthermore, the bottom of spoiler inclines to the riser, and the bottom and the riser fixed connection of spoiler, and the spoiler bottom is located the below in ventilation hole.

Furthermore, the top end of the spoiler is positioned at a third position of the air suction opening close to the handcart room. The main source of generating heat in the cubical switchboard is for being located indoor stationary contact box of generating line and generating line, and the spoiler sets up the third department that is close to the handcart room and makes the generating line room obtain more volume of induced drafting to make the heat extraction volume of generating line room accelerate, better dispel the heat in the cubical switchboard.

Furthermore, a return line chamber is arranged below the bus chamber, temperature probes are arranged in the handcart chamber, the bus chamber and the return line chamber, and a temperature controller is arranged on the outer side of the cabinet body and is electrically connected with the temperature probes and the exhaust fan respectively.

Furthermore, the cabinet body is provided with a plurality of air inlets which are respectively positioned on the bottom surface of the return wire chamber, the side surface of the return wire chamber and the side surface of the bottom end of the handcart chamber. The air inlet hole and the fan room are respectively located at the bottom end and the top end of the cabinet body, so that an air channel in the switch cabinet is optimized, the heating source is located at the tail end of the air channel, heat generated by the heating source can be discharged through the exhaust fan more quickly, and heat accumulation in the switch cabinet can be avoided due to the fact that other components in the switch cabinet are not passed.

Furthermore, dust screens are arranged at the air inlet holes. The setting of dust screen avoids the air intake to get into the dust and adsorbs on the internal electronic component of cabinet, and too much dust leads to electronic component heat dissipation unusual and produce static easily, and static leads to electronic component to damage easily.

Furthermore, a silica gel shock absorption pad is arranged between the connection of the exhaust fan and the fan chamber. The silica gel shock pad can avoid the fan of airing exhaust to produce resonance with the fan room when the fan of airing exhaust is in operation, leads to whole cubical switchboard to produce great noise.

Furthermore, sound absorption cotton is further arranged on the side wall of the fan chamber. Inhale the cotton setting of sound and can reduce the wind noise that the fan during operation of airing exhaust produced.

Further, the bottom of riser still is provided with supplementary ventilation hole. Because the overall arrangement of handcart indoor equipment on the side of handcart room bottom, the area that can set up the inlet port is less, increases the air flow volume that supplementary ventilation hole can increase the handcart room to make the heat of handcart room can in time be taken out.

The beneficial effects of the utility model are that:

the utility model discloses a set up the fan room at cabinet body top, use the fan of airing exhaust to siphon away the internal heat of cabinet and discharge to make the passive heat dissipation of cubical switchboard become the initiative heat dissipation, make the heat in the cubical switchboard discharge sooner, avoid the high temperature in the cubical switchboard, thereby increase the life of equipment. The air duct in the switch cabinet is optimized through the arrangement of the spoiler, the ventilation holes and the air inlet holes, so that heat in the switch cabinet is reasonably discharged, the phenomenon of heat accumulation in a partial space can not be generated, the heat in the whole switch cabinet is effectively reduced, and equipment in the switch cabinet is protected.

Drawings

FIG. 1 is a schematic view of the front view of the internal structure of the present invention;

FIG. 2 is a schematic view of the three-dimensional internal structure of the present invention;

FIG. 3 is a schematic view of a partial structure of the interior of the cabinet;

fig. 4 is a schematic view of an air duct in the cabinet body.

Wherein, 1, a cabinet body; 2. a handcart room; 3. a bus chamber; 4. a fan chamber; 5. an exhaust fan; 6. a spoiler; 7. a vent hole; 8. a vertical plate; 9. a wire returning chamber; 10. a temperature controller; 11. an air intake; 12. a stationary contact box; 13. a circuit breaker handcart; 14. auxiliary vent holes.

Detailed Description

The following description of the embodiments of the present invention is provided to enable those skilled in the art to understand the invention, and it is to be understood that the invention is not limited to the details of the embodiments, but rather, the invention is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined and defined by the appended claims.

As shown in fig. 1-3, a heat dissipation structure of a large current switch cabinet comprises a cabinet body 1, a handcart room 2 and a bus room 3 are arranged inside the cabinet body 1, a fan room 4 is arranged at the top of the cabinet body 1, a plurality of exhaust fans 5 are arranged inside the fan room 4, and the fan room 4 is communicated with the cabinet body 1 through an exhaust inlet arranged at the bottom end; the air suction opening is provided with a spoiler 6, and a vent hole 7 is arranged on a vertical plate 8 between the handcart room 2 and the bus room 3. The bottom end of the vertical plate is also provided with an auxiliary vent hole 14.

The bottom end of the spoiler 6 inclines towards the vertical plate 8, the bottom end of the spoiler 6 is fixedly connected with the vertical plate 8, and the bottom end of the spoiler 6 is positioned below the vent hole 7.

The top end of the spoiler 6 is positioned at the position of the air suction opening, which is close to one third of the handcart room 2.

A return wire chamber 9 is arranged below the bus chamber 3, temperature probes are arranged in the handcart chamber 2, the bus chamber 3 and the return wire chamber 9, a temperature controller 10 is arranged outside the cabinet body 1, and the temperature controller 10 is respectively and electrically connected with the temperature probes and the exhaust fan 5.

The cabinet body 1 is provided with a plurality of air inlets 11, and the plurality of air inlets 11 are respectively positioned on the bottom surface of the return wire chamber 9, the side surface of the return wire chamber 9 and the side surface of the bottom end of the handcart chamber 2.

A silica gel shock absorption pad is arranged between the connection of the exhaust fan 5 and the fan chamber 4. The side wall of the fan chamber 4 is also provided with sound absorption cotton.

The utility model discloses an use flow and theory of operation:

when the temperature probe senses that the heat in the switch cabinet is high, the exhaust fan 5 works to blow out the air with heat in the switch cabinet upwards, negative pressure is formed in the switch cabinet, the air outside the cabinet body 1 enters from the air inlet 11 to form an air duct as shown in fig. 4, the direction A in the drawing is the air flowing direction, the air ducts are two, the air duct on the right side, the air with low temperature outside the air (hereinafter referred to as cold air) enters the return line chamber 9 from the air inlet 11 on the bottom surface of the return line chamber 9 and the air inlet 11 on the side surface of the return line chamber 9, then the cold air moves upwards under the action of the exhaust fan 5 and blows to the stationary contact box 12, the cold air exchanges heat with the stationary contact box 12, and the heat of the stationary contact box 12 is dissipated. The cold air heated by heat exchange with the static contact box 12 continues to move upwards, passes through the vent hole 7 of the vertical plate 8 and is blown out of the cabinet body 1 by the exhaust fan 5. Cold air enters the handcart room 2 from the side face of the handcart room 2, namely an air inlet hole 11 on the side face of the cabinet body 1, the cold air exchanges heat with the circuit breaker handcart 13, the cold air heated by the heat exchange with the circuit breaker handcart 13 continues to move upwards and is blown out of the cabinet body 1 by the air exhaust fan 5, and the heat dissipation of the switch cabinet is completed. Whole wind channel scientific and reasonable can both rationally dispel the heat to the equipment of arbitrary position in the cubical switchboard, hot-air after can not appear exchanging heat with equipment blows to another equipment for the equipment that is blown to produces the long-pending hot phenomenon.

Claims

1. A large-current switch cabinet heat dissipation structure comprises a cabinet body (1), wherein a handcart room (2) and a bus room (3) are arranged inside the cabinet body (1), and the large-current switch cabinet heat dissipation structure is characterized in that a fan room (4) is arranged at the top of the cabinet body (1), a plurality of exhaust fans (5) are arranged inside the fan room (4), and the fan room (4) is communicated with the cabinet body (1) through an exhaust inlet formed in the bottom end of the fan room; the utility model discloses a handcart room, including handcart room (2), bus-bar room (3), air inlet department is provided with spoiler (6), be provided with ventilation hole (7) on riser (8) between handcart room (2) and bus-bar room (3).

2. A large current switch cabinet heat dissipation structure as defined in claim 1, wherein the bottom end of the spoiler (6) is inclined toward the vertical plate (8), and the bottom end of the spoiler (6) is fixedly connected to the vertical plate (8), and the bottom end of the spoiler (6) is located below the ventilation hole (7).

3. A high current switch cabinet heat dissipation structure according to claim 2, wherein the top end of the spoiler (6) is located at the air inlet opening near one third of the handcart room (2).

4. A large current switch cabinet heat dissipation structure according to claim 1, wherein a return line chamber (9) is further arranged below the bus chamber (3), temperature probes are arranged in the handcart chamber (2), the bus chamber (3) and the return line chamber (9), a temperature controller (10) is arranged outside the cabinet body (1), and the temperature controller (10) is electrically connected with the temperature probes and the exhaust fan (5) respectively.

5. A large current switch cabinet heat dissipation structure as claimed in claim 4, wherein the cabinet body (1) is provided with a plurality of air inlets (11), and the plurality of air inlets (11) are respectively located on the bottom surface of the return wire chamber (9), the side surface of the return wire chamber (9) and the side surface of the bottom end of the handcart chamber (2).

6. A high current switch cabinet heat dissipation structure according to claim 5, wherein several air inlet holes (11) are provided with dust screens.

7. A high-current switch cabinet heat dissipation structure according to claim 1, wherein a silica gel shock absorption pad is arranged at the joint of the exhaust fan (5) and the fan chamber (4).

8. A high-current switch cabinet heat dissipation structure according to claim 6, wherein sound absorption cotton is further arranged on the side wall of the fan chamber (4).

9. A high current switch cabinet heat dissipation structure according to claim 1, wherein the bottom end of the vertical plate (8) is further provided with an auxiliary vent hole (14).