Layered diversion drawer type switch cabinet

Abstract

The utility model discloses a layered diversion drawer-type switch cabinet, which comprises a cabinet body, the cabinet body is sequentially provided with a lower layer area, a middle layer area and an upper layer area from bottom to top, and the lower layer area is provided with a plurality of drawer units with ventilation structures. An inclined flow guide plate is arranged above the uppermost drawer unit and is close to a back plate of the cabinet body, and first ventilation areas are arranged on the side wall face and the bottom of the lower layer area. External cold air is effectively introduced through the first ventilation area and the second ventilation area, it is ensured that copper bars and primary cables in the cabinet body can rapidly make contact with the filtered cold air for efficient heat exchange, the contact area between the heating element and the cold air is increased through the flow guide plate, the heat dissipation efficiency is further improved, and the service life of the cabinet body is prolonged. The temperature rise of the heating element can be effectively controlled without additionally installing excessive heat dissipation devices, and the problem of heat accumulation in the cabinet is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to switchgear technology field especially relates to a drawer type switchgear of layered flow guide. BACKGROUND

[0002] With the continuous progress and iteration of power system, the drawer type switchgear plays an indispensable role in the modern power distribution field due to its simple operation, stable performance and compact structure. However, in the actual application process, we noticed that the drawer type switchgear has certain problems in the heat dissipation performance. The ventilation system of the traditional switchgear is usually located at the top, and the vertical channel copper bar in the drawer unit generates a large amount of heat due to the large load flow in operation; at the same time, the heat generation of the primary cable also increases with the increase of the load in the power-on state, resulting in continuous temperature rise.

[0003] The simultaneous work of multiple heat generating elements inside the cabinet causes heat to accumulate inside the cabinet, and due to the poor air circulation in the cabinet, these heat cannot be discharged in time, which not only causes the equipment to trigger protection trip due to overheating, but also may cause serious safety accidents. In addition, in order to alleviate the heat accumulation, the ventilation device needs to be continuously operated, which not only consumes a large amount of electric energy, but also fails to effectively solve the problem of heat discharge. Therefore, the applicant has made beneficial design and found a method to solve the above problems, and the technical scheme to be introduced below is generated in this background. SUMMARY

[0004] The utility model discloses a stable operation, provide safe guarantee, control temperature rise's product to overcome the deficiency of traditional drawer type switchgear design.

[0005] To solve the above problems, the utility model adopts the following technical scheme.

[0006] A drawer type switchgear with layered flow guide, comprising a cabinet, the cabinet is sequentially provided with a lower layer area, a middle layer area and an upper layer area from bottom to top, the lower layer area is provided with a plurality of drawer units with ventilation structure, an inclined flow guide plate is arranged above the uppermost drawer unit and close to the back plate of the cabinet, the side wall surface and the bottom of the lower layer area are provided with a first ventilation area, the side wall surface of the middle layer area is provided with a plurality of second ventilation areas, the side wall surface and the top of the upper layer area are provided with a plurality of exhaust areas, the upper layer area is provided with at least one heat dissipation device, and the first ventilation area, the second ventilation area and the exhaust area are provided with a filter screen.

[0007] Preferably, the cabinet is provided with a temperature controller and is electrically connected with the heat dissipation device, temperature sensors are arranged on both sides of the inner wall of the cabinet and are electrically connected with the temperature controller, and are used for transmitting the detected temperature data to the temperature controller.

[0008] Preferably, the bottom of the drawer unit is provided with a plurality of equidistant air inlet holes.

[0009] Preferably, the flow guide plates are fixed on both sides of the cabinet body, one of the flow guide plates is arranged at one end of the drawer unit, the other flow guide plate is arranged at the other end of the drawer unit, a channel for guiding the flow of gas medium is formed between the two flow guide plates, the flow guide plates are provided with flow guide portions and are vertically distributed with the cabinet body.

[0010] Preferably, the heat dissipation device is an axial flow fan.

[0011] Preferably, the filter screen is a gauze screen.

[0012] Preferably, the first ventilation area and the second ventilation area are composed of a plurality of equidistant ventilation holes, and the exhaust area is composed of a plurality of equidistant heat dissipation holes.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of the present application are:

[0015] The present application effectively introduces external cold air through the first ventilation area and the second ventilation area, ensures that the copper bars and primary cables in the cabinet body can quickly contact the filtered cold air for efficient heat exchange, and the temperature rise of the heating elements is significantly reduced, thereby maintaining the normal operating temperature of the equipment. In addition, the contact area of the heating elements and the cold air is increased by the flow guide plates, further improving the heat dissipation efficiency. This design can effectively control the temperature rise of the heating elements without the need for additional installation of too many heat dissipation devices, thereby solving the problem of heat accumulation in the cabinet. Through accurate guidance of the flow direction of the cold air and optimization of the heat dissipation path, not only efficient heat dissipation performance is achieved, but also the following advantages are achieved: stable operation, reliable safety protection and effective temperature rise control. This innovative design undoubtedly provides strong support for the reliability and safety of the power system. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view of the drawer type switch cabinet with layered flow guide of the present application;

[0017] Figure 2 It is a rear view of the drawer type switch cabinet with layered flow guide of the present application;

[0018] Figure 3 It is a side cross-sectional structure schematic view of the drawer type switch cabinet with layered flow guide of the present application;

[0019] Figure 4 It is a bottom view of the drawer type switch cabinet with layered flow guide of the present application;

[0020] Figure 5 Figure 1 is a top view of a drawer-type switch cabinet with layered flow guide according to the present application;

[0021] Figure 6 Figure 2 is a top view of a drawer unit of a drawer-type switch cabinet with layered flow guide according to the present application;

[0022] The correspondence between the reference signs in the drawings and the component names is as follows:

[0023] Reference signs: 1, cabinet body; 2, drawer unit; 3, flow guide plate; 4, heat dissipation device; 5, filter screen; 6, temperature controller; 7, temperature sensor; 11, lower layer area; 12, middle layer area; 13, upper layer area; 111, first ventilation area; 121, second ventilation area; 131, exhaust area; 21, air inlet hole; 31, passage; 32, drainage part. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely below in conjunction with embodiments. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular direction, be constructed and operated in a particular direction, and therefore cannot be understood as a limitation on the present application.

[0026] In the embodiments of the present application, "and / or" is only a description of the association relationship between the associated objects, indicating that there can be three relationships, for example, A and / or B can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects have an "or" relationship.

[0027] Reference Example Figures 1 to 6The layered and flow-guiding drawer-type switch cabinet comprises a cabinet body 1, the cabinet body 1 is sequentially provided with a lower layer area 11, a middle layer area 12 and an upper layer area 13 from bottom to top, the lower layer area 11 is provided with a plurality of drawer units 2 with ventilation structures, an inclined flow guide plate 3 is arranged above the uppermost drawer unit 2 and close to the back plate of the cabinet body 1, the side wall surface and the bottom of the lower layer area 11 are provided with a first ventilation area 111, the side wall surface of the middle layer area 12 is provided with a plurality of second ventilation areas 121, the side wall surface and the top of the upper layer area 13 are provided with a plurality of exhaust areas 131, the upper layer area 13 is provided with at least one heat dissipation device 4, and the first ventilation area 111, the second ventilation area 121 and the exhaust area 131 are provided with filter screens 5.

[0028] The external cold air is effectively introduced through the first ventilation area 111 and the second ventilation area 121, so that the copper bars and the primary cables in the cabinet body 1 can rapidly contact the filtered cold air to perform efficient heat exchange, the layout significantly reduces the temperature rise of the heating elements, and the normal operation temperature of the equipment is maintained; in addition, the contact area of the heating elements and the cold air is increased through the flow guide plate 3, and the heat dissipation efficiency is further improved, the temperature rise of the heating elements can be effectively controlled without additionally installing too many heat dissipation devices 4, and the problem of heat accumulation in the cabinet is solved; through the accurate guidance of the cold air flow direction and the optimization of the heat dissipation path, not only the efficient heat dissipation performance is realized, but also the following advantages are achieved: stable operation, reliable safety guarantee and effective temperature rise control, and the innovative design undoubtedly provides strong support for the reliability and safety of the power system.

[0029] It is worth mentioning that the cabinet body 1 is provided with a temperature controller 6 and is electrically connected with the heat dissipation device 4, temperature sensors 7 are arranged on the two sides of the inner wall of the cabinet body 1 and are electrically connected with the temperature controller 6, are used for transmitting the detected temperature data to the temperature controller 6, and the temperature data of the temperature controller 6 is set by the staff, when the temperature data detected by the temperature sensor 7 reaches the temperature lower limit, the temperature controller 6 sends a shutdown instruction to the heat dissipation device 4; when the temperature data detected by the temperature sensor 7 reaches the temperature upper limit, the temperature controller 6 sends a start instruction to the heat dissipation device 4, since it belongs to the prior art and common knowledge, too much description is not given here;

[0030] It is worth mentioning that the bottom of the drawer unit 2 is provided with a plurality of equidistant air inlet holes 21, a part of the cold air entering the lower layer area 11 from the first ventilation area 111 enters the drawer unit 2 through the air inlet holes 21 and exchanges heat with the electronic elements in the drawer unit 2;

[0031] It is worth mentioning that the guide plate 3 is fixed on both sides of the cabinet body 1, one of which is arranged at one end of the drawer unit 2, and the other is arranged at the other end of the drawer unit 2, and a channel 31 for guiding the flow of gas medium is formed between the two guide plates 3, the guide plate 3 is provided with a flow guide part 32 and is vertically distributed with the cabinet body 1, and the cold air flowing out of the drawer unit 2 enters the channel 31 and is guided by the flow guide part 32 to be sucked by the heat dissipation device 4 to gradually rise in the vertical direction;

[0032] It is worth mentioning that the heat dissipation device 4 is arranged as an axial flow fan, and the heat dissipation device 4 is fixedly installed on the side wall surface in the cabinet body 1, and the air suction inlet of the heat dissipation device 4 is vertically aligned with the first ventilation hole 111 at the bottom of the lower area 11, and the air outlet of the heat dissipation device 4 is aligned with the exhaust area 131 at the top of the upper area 13;

[0033] It is worth mentioning that the filter screen 5 is arranged as a fine mesh screen, which filters out impurities and large particles contained in the air, so that the heating elements in the cabinet body 1 are not attached with impurities, and the heat exchange efficiency is affected;

[0034] It is worth mentioning that the first ventilation area 111 and the second ventilation area 121 are composed of a plurality of equally spaced ventilation holes, and the exhaust area 131 is composed of a plurality of equally spaced heat dissipation holes, the cold air enters the cabinet body 1 through the ventilation holes, and the hot air with small density and upward state is quickly discharged from the heat dissipation holes through the heat dissipation device 4 after the cold air exchanges heat with the heating elements.

[0035] The above design scheme can realize stable operation, provide safety protection and control temperature rise.

[0036] The above content is further described in detail in combination with the specific embodiments, and cannot be determined that the specific embodiments of the utility model are limited to these descriptions. For ordinary skilled in the art to which the utility model belongs, without departing from the concept of the utility model, a number of simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope determined by the claims of the utility model.

Claims

1. A drawer-type switchgear with hierarchical current steering, comprising a cabinet (1), characterized in that: The cabinet (1) is sequentially provided with a lower area (11), a middle area (12) and an upper area (13) from bottom to top, the lower area (11) is provided with a plurality of drawer units (2) with ventilation structure, an inclined flow guide plate (3) is arranged above the uppermost drawer unit (2) and close to the back plate of the cabinet (1), the side wall surface and the bottom of the lower area (11) are provided with a first ventilation area (111), the side wall surface of the middle area (12) is provided with a plurality of second ventilation areas (121), the side wall surface and the top of the upper area (13) are provided with a plurality of exhaust areas (131), the upper area (13) is provided with at least one heat dissipation device (4), and the first ventilation area (111), the second ventilation area (121) and the exhaust area (131) are provided with filter screens (5).

2. The layered and guided flow drawer-type switchgear according to claim 1, characterized in that: The cabinet (1) is provided with a temperature controller (6) and is electrically connected with the heat dissipation device (4), the inner wall of the cabinet (1) is provided with temperature sensors (7) on both sides and is electrically connected with the temperature controller (6), so as to transmit the detected temperature data to the temperature controller (6).

3. The layered and guided flow drawer-type switchgear according to claim 1, characterized in that: The bottom of the drawer unit (2) is provided with a plurality of equidistant air inlet holes (21).

4. The layered, flow-directed drawer-type switchgear of claim 1, wherein: The flow guide plates (3) are fixed on both sides of the cabinet (1), one of the flow guide plates (3) is arranged at one end of the drawer unit (2), the other flow guide plate (3) is arranged at the other end of the drawer unit (2), a channel (31) for guiding the flow of gas medium is formed between the two flow guide plates (3), the flow guide plate (3) is provided with a flow guide part (32) and is vertically distributed with the cabinet (1).

5. The layered, flow-directed drawer-type switchgear of claim 1, wherein: The heat dissipation device (4) is an axial flow fan.

6. The layered, flow-directed drawer-type switchgear of claim 1, wherein: The filter screen (5) is a fine gauze screen.

7. The layered, flow-directed switchgear cabinet of any of claims 2 to 6, wherein: The first ventilation area (111) and the second ventilation area (121) are composed of a plurality of equidistant ventilation holes, and the exhaust area (131) is composed of a plurality of equidistant heat dissipation holes.

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