Low-voltage switch cabinet for smart power grid

Abstract

The utility model discloses a low-voltage switch cabinet used for an intelligent power grid, and relates to the technical field of low-voltage switch cabinets, the low-voltage switch cabinet comprises a cabinet body, a plurality of placing plates are fixedly arranged in the cabinet body, the plurality of placing plates divide the interior of the cabinet body into a plurality of mounting chambers, one side of each mounting chamber is provided with an air outlet assembly, and the other side of each mounting chamber is provided with a plurality of air outlet assemblies. The air outlet assembly comprises a first square groove, a second square groove and a baffle, the first square groove is formed in the outer wall of the cabinet body, the second square groove is formed in the inner wall of the cabinet body, the first square groove is communicated with the second square groove, and the length and the width of the first square groove are larger than those of the second square groove. According to the low-voltage switch cabinet for the smart power grid, by arranging the mounting cavity, the baffle and other structures, targeted heat dissipation can be achieved, the heat dissipation efficiency is improved, meanwhile, in the non-ventilation state, the baffle closes the first square groove, external dust and other impurities cannot enter the cabinet body, the dustproof effect is achieved, and the use efficiency of the low-voltage switch cabinet is improved.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, and in particular to a low-voltage switchgear for smart grids. Background Technology

[0002] A switchgear is an electrical device. External power lines first enter the main control switch inside the cabinet, then proceed to the branch control switches, with each branch circuit configured according to its requirements. The main function of a switchgear is to switch, control, and protect electrical equipment during the power generation, transmission, distribution, and energy conversion processes in a power system. Low-voltage switchgear is suitable for power plants, petroleum, chemical, metallurgical, textile, and high-rise building industries for power transmission, distribution, and energy conversion.

[0003] For example, a patent titled "A Novel Floor-Standing Switchgear" (patent application number: CN202022171290.X) discloses a novel floor-standing switchgear. When the fan is working, air enters from the top of the cabinet, passes through the support plates from top to bottom, and then flows out through the rectangular ventilation holes in the base. This unique structure not only effectively improves airflow within the cabinet and ensures heat dissipation efficiency, but also allows for control of the opening direction and thus the airflow direction through an openable control door, depending on the actual installation location. However, due to the varying heating characteristics of the electrical components inside the switchgear, the airflow passes through multiple locations inside the cabinet from top to bottom during heat dissipation, resulting in only moderate heat dissipation efficiency.

[0004] Therefore, it is necessary to propose a low-voltage switchgear for smart grids to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a low-voltage switchgear for smart grids, in order to solve the problem that due to the different heating conditions of the electrical components inside the switchgear, the airflow passes through multiple locations inside the switchgear from top to bottom during the heat dissipation process, resulting in generally low heat dissipation efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a low-voltage switchgear for smart grids, comprising a cabinet, wherein a placement plate is fixedly installed inside the cabinet, and multiple placement plates are configured to divide the interior of the cabinet into multiple installation chambers. An air outlet assembly is provided on one side of each installation chamber, the air outlet assembly comprising a first square groove, a second square groove, and a baffle. The first square groove is formed on the outer wall of the cabinet, and the second square groove is formed on the inner wall of the cabinet. The first square groove and the second square groove are connected, and the length and width of the first square groove are respectively greater than the length and width of the second square groove. The baffle is slidably disposed inside the first square groove. A second air duct for air supply is provided on the other side of the installation chamber.

[0007] Preferably, an elastic telescopic rod is fixedly connected to the side of the baffle near the second square groove, and the end of the elastic telescopic rod away from the baffle is fixedly connected to the inner wall of the first square groove.

[0008] Preferably, a circular groove is provided on the side wall of the cabinet for the passage of the second air duct. The end of the second air duct located in the installation chamber is connected to an air hood, and a solenoid valve is fixedly installed on the second air duct.

[0009] Preferably, a fan is fixedly connected to the upper surface of the top of the cabinet, and a first air duct is connected to the air outlet of the fan. The end of the second air duct away from the fan cover is connected to the first air duct.

[0010] Preferably, a temperature sensor is fixedly installed on the inner wall of the mounting chamber, and the temperature sensor works in conjunction with a solenoid valve.

[0011] Preferably, a cover is fixedly connected to the upper surface of the top of the cabinet.

[0012] Preferably, the placement plate has a wire-passing hole.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model can achieve targeted heat dissipation and improve heat dissipation efficiency by setting up installation chambers, baffles and other structures. At the same time, in the non-ventilated state, the baffle closes the first square groove, and external dust and other impurities will not enter the interior of the cabinet, thus achieving the effect of dust prevention and improving the utilization efficiency of low-voltage switch cabinet.

[0015] 2. An elastic telescopic rod is set up to cooperate with the baffle. In the initial stage of heat dissipation, the gas carries the heat out at high speed, which improves the heat dissipation effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the low-voltage switchgear structure of this utility model for use in smart grids.

[0017] Figure 2 This is a cross-sectional view of the low-voltage switchgear of this utility model for use in smart grids.

[0018] Figure 3 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0019] Figure 4 This is a schematic diagram of the cabinet body and the first square groove structure of this utility model.

[0020] In the diagram: 1. Cabinet; 2. Placement board; 3. Installation chamber; 4. First square groove; 5. Second square groove; 6. Baffle; 7. Elastic telescopic rod; 8. Fan; 9. First air duct; 10. Second air duct; 11. Temperature sensor; 12. Fan cover; 13. Solenoid valve; 14. Top cover; 15. Wiring hole. Detailed Implementation

[0021] This utility model provides, for example Figures 1-4 The low-voltage switchgear shown is suitable for use in smart grids, including power plants, petroleum, chemical, metallurgical, textile, and high-rise building industries, for power transmission, distribution, and energy conversion. The low-voltage switchgear includes a cabinet 1, with multiple placement plates 2 fixedly installed inside. These placement plates 2 divide the interior of the cabinet 1 into multiple mounting chambers 3, which are used to install electrical components.

[0022] The placement plate 2 has a wire hole 15. In actual use, the wire hole 15 is used to pass wires through to realize the connection between electrical components inside different installation chambers 3. After the wires pass through, they can be sealed with sealant.

[0023] Considering the differences in heat generation among various electrical components, an air outlet assembly is installed on one side of the mounting chamber 3 to achieve targeted heat dissipation. The air outlet assembly includes a first square groove 4, a second square groove 5, and a baffle 6. The first square groove 4 is located on the outer wall of the cabinet 1, and the second square groove 5 is located on the inner wall of the cabinet 1. The first square groove 4 and the second square groove 5 are connected, and the length and width of the first square groove 4 are greater than those of the second square groove 5. The baffle 6 is slidably disposed inside the first square groove 4. An elastic telescopic rod 7 is fixedly connected to the side of the baffle 6 closest to the second square groove 5. The end of the elastic telescopic rod 7 away from the baffle 6 is fixedly connected to the inner wall of the first square groove 4, and multiple elastic telescopic rods 7 can be installed. During ventilation and heat dissipation, air is supplied to the corresponding mounting chamber 3. The gas pushes the baffle 6 to move away from the second square groove 5, opening the first square groove 4 to facilitate gas exhaust and achieve targeted heat dissipation. In non-ventilation and heat dissipation states, the baffle 6 closes the first square groove 4, preventing external dust and other impurities from entering the cabinet 1, thus achieving a dustproof effect.

[0024] By setting up structures such as the installation chamber 3 and the baffle 6, targeted heat dissipation can be achieved, improving heat dissipation efficiency. At the same time, in the non-ventilated state, the baffle 6 closes the first square groove 4, preventing external dust and other impurities from entering the interior of the cabinet 1, thus achieving a dustproof effect and improving the utilization efficiency of the low-voltage switchgear.

[0025] In addition, during the initial stage of heat dissipation, gas enters the interior of the installation chamber 3. Since there is less gas at this time, the gas pressure is less than the elastic support force of the elastic telescopic rod 7. As the gas continues to enter and accumulate, when the gas pressure is greater than the elastic support force of the elastic telescopic rod 7, the baffle 6 moves rapidly in the direction away from the second square groove 5, and the first square groove 4 opens. During this process, the gas carries heat out at high speed, improving the heat dissipation effect.

[0026] On the other side of the installation chamber 3, a second air duct 10 for air supply is provided. A circular groove is provided on the side wall of the cabinet 1 for the second air duct 10 to pass through. One end of the second air duct 10 located in the installation chamber 3 is connected to a hood 12. The hood 12 can expand the air supply area. A solenoid valve 13 is fixedly installed on the second air duct 10.

[0027] A fan 8 is fixedly connected to the upper surface of the top of the cabinet 1. A first air duct 9 is connected to the air outlet of the fan 8. The end of the second air duct 10 away from the fan cover 12 is connected to the first air duct 9.

[0028] The fan 8 delivers air into the installation chamber 3 through the first air duct 9, the second air duct 10, and the fan cover 12.

[0029] A temperature sensor 11 is fixedly installed on the inner wall of the installation chamber 3, and the temperature sensor 11 works in conjunction with the solenoid valve 13. Specifically, a controller can be set up to connect between the fan 8, the solenoid valve 13, and the temperature sensor 11. When the temperature sensor 11 detects that the temperature inside the installation chamber 3 exceeds a set threshold, it transmits this information to the controller. The controller then controls the fan 8 and the solenoid valve 13 to open. The controller and its control principle are common existing technologies and will not be described in detail here.

[0030] By setting up structures such as temperature sensor 11 and solenoid valve 13, intelligent control can be achieved, which is especially suitable for use with smart grids.

[0031] To protect the fan 8, a cover 14 is fixedly connected to the upper surface of the top of the cabinet 1.

Claims

1. A low-voltage switchgear for smart grids, comprising a cabinet (1), characterized in that: The cabinet (1) is fixedly provided with a placement plate (2). Multiple placement plates (2) are provided, which divide the interior of the cabinet (1) into multiple installation chambers (3). An air outlet assembly is provided on one side of the installation chamber (3). The air outlet assembly includes a first square groove (4), a second square groove (5), and a baffle (6). The first square groove (4) is opened on the outer wall of the cabinet (1), and the second square groove (5) is opened on the inner wall of the cabinet (1). The first square groove (4) and the second square groove (5) are connected. The length and width of the first square groove (4) are greater than the length and width of the second square groove (5). The baffle (6) is slidably disposed inside the first square groove (4). A second air duct (10) for air supply is provided on the other side of the installation chamber (3).

2. A low-voltage switchgear for smart grids according to claim 1, characterized in that: An elastic telescopic rod (7) is fixedly connected to the side of the baffle (6) near the second square groove (5), and the end of the elastic telescopic rod (7) away from the baffle (6) is fixedly connected to the inner wall of the first square groove (4).

3. A low-voltage switchgear for smart grids according to claim 1, characterized in that: The cabinet (1) has a circular groove on its side wall for the second air duct (10) to pass through. The second air duct (10) is connected to a hood (12) at one end of the installation chamber (3). A solenoid valve (13) is fixedly installed on the second air duct (10).

4. A low-voltage switchgear for smart grids according to claim 3, characterized in that: A fan (8) is fixedly connected to the upper surface of the top of the cabinet (1). A first air duct (9) is connected to the air outlet of the fan (8). The end of the second air duct (10) away from the fan cover (12) is connected to the first air duct (9).

5. A low-voltage switchgear for smart grids according to claim 4, characterized in that: A temperature sensor (11) is fixedly installed on the inner wall of the installation chamber (3), and the temperature sensor (11) cooperates with the solenoid valve (13).

6. A low-voltage switchgear for smart grids according to claim 1, characterized in that: The top surface of the cabinet (1) is fixedly connected to a cover (14).

7. A low-voltage switchgear for smart grids according to claim 1, characterized in that: The placement plate (2) has a threading hole (15).

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