A switch cabinet based on dual-channel convection heat dissipation

Abstract

This utility model discloses a switch cabinet based on dual-channel convection heat dissipation, including a cabinet body. A cable compartment is located inside the cabinet body. A first busbar compartment is located at the top of the cabinet body. A first ventilation cavity and a second ventilation cavity, which are interconnected, are located at the bottom of the cabinet body. A second busbar compartment is located between the first busbar compartment and the first ventilation cavity. The upper and lower ends of the second busbar compartment are respectively connected to the first busbar compartment and the first ventilation cavity. Several device compartments arranged vertically are located on one side of the second busbar compartment. A heat insulation plate is installed between the second busbar compartment and the device compartments. The bottom device compartments are connected to the second ventilation cavity, and the top device compartments are connected to the first busbar compartment. A partition plate with ventilation holes is installed between adjacent device compartments. This utility model uses natural convection for heat dissipation; air carries away heat from the cabinet body through two channels, improving heat dissipation efficiency and ensuring reliable operation of the switch cabinet.

Description

Technical Field

[0001] This utility model relates to the field of switch cabinet technology, and in particular to a switch cabinet based on dual-channel convection heat dissipation. Background Technology

[0002] Switchgear is a key set of electrical equipment in power systems used for power generation, transmission, distribution, and energy conversion. Its core functions are opening, closing, controlling, and protecting circuits to ensure the safe and reliable operation of the power system. Components such as circuit breakers, busbars, and contactors within the switchgear experience a decline in insulation performance at high temperatures (e.g., insulation material aging or breakdown), leading to short circuits or even fires. Increased temperatures can cause parameter drift in components such as relays and electronic trip units (e.g., thermal-magnetic trip units tripping prematurely at high temperatures), resulting in unnecessary power outages. Statistics show that over 40% of switchgear failures are related to overheating; therefore, heat dissipation in switchgear is of paramount importance. Utility Model Content

[0003] To address the aforementioned technical problems, the purpose of this utility model is to propose a switch cabinet based on dual-channel convection heat dissipation, thereby improving the heat dissipation effect of the switch cabinet.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A switch cabinet based on dual-channel convection heat dissipation includes a cabinet body. A cable compartment is located within the cabinet body. A first busbar compartment is located at the top of the cabinet body. A first ventilation cavity and a second ventilation cavity are interconnected at the bottom of the cabinet body. A second busbar compartment is located between the first busbar compartment and the first ventilation cavity. The upper and lower ends of the second busbar compartment are respectively connected to the first busbar compartment and the first ventilation cavity. Several device compartments arranged vertically are located on one side of the second busbar compartment. A heat insulation plate is installed between the second busbar compartment and the device compartments. The bottom device compartments are connected to the... The second ventilation chamber is connected, and the top component chamber is connected to the first busbar chamber. A partition plate with ventilation holes is provided between adjacent component chambers. At the bottom of the side wall of the cabinet, there is a ventilation hole connected to the first ventilation chamber and a first louver connected to the second ventilation chamber. The ventilation hole is close to the second busbar chamber. A ventilation opening is provided at the top of the cabinet, and a dust filter is provided on the ventilation opening. An exhaust fan is provided inside the ventilation opening. A temperature sensor is provided inside the cabinet. When the temperature inside the cabinet is higher than 50°C, the exhaust fan is activated.

[0006] Preferably, the bottom of the first busbar compartment is provided with a base plate connected to the second busbar compartment and the device compartment. The base plate is provided with a first ventilation slot communicating with the second busbar compartment and a second ventilation slot communicating with the device compartment. The edge of the first ventilation slot is provided with a first folding plate perpendicular to the base plate, and the edge of the second ventilation slot is provided with a second folding plate perpendicular to the base plate. The first folding plate and the second folding plate are perpendicular to each other.

[0007] Preferably, a first ventilation component is provided at the bottom of the side wall of the cabinet. The first ventilation component includes a base plate and bent plates disposed on both sides of the base plate. The bent plates are provided with mounting holes, the ventilation holes are disposed on the base plate, and the base plate is provided with reinforcing ribs.

[0008] Preferably, a second louver is provided at the bottom of the side wall of the cabinet away from the second busbar compartment.

[0009] Preferably, the louvers of both the first and second louvers are inclined downwards from the inside out.

[0010] Preferably, the exhaust fan is located above the device chamber.

[0011] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0012] This utility model relates to a switch cabinet based on dual-channel convection heat dissipation, comprising a cabinet body. A first busbar compartment is located at the top of the cabinet body, and a first ventilation cavity and a second ventilation cavity are interconnected at the bottom of the cabinet body. A second busbar compartment is located between the first busbar compartment and the first ventilation cavity. The upper and lower ends of the second busbar compartment are connected to the first busbar compartment and the first ventilation cavity, respectively. Several device compartments arranged vertically are located on one side of the second busbar compartment. A heat insulation plate is installed between the second busbar compartment and the device compartments. The bottom device compartments are connected to the second ventilation cavity, and the top device compartments are connected to the first busbar compartment. Adjacent device compartments are separated by... The cabinet is equipped with a partition plate with ventilation holes. Air enters the first and second ventilation chambers from the bottom through the ventilation holes and the first louver, and then flows along two channels. In one channel, air enters the second busbar compartment from the first ventilation chamber and then enters the first busbar compartment. In the other channel, air enters the device compartment at the bottom from the second ventilation chamber, then passes through the ventilation holes on the partition plate and passes through multiple device compartments before entering the first busbar compartment. The gas in the first busbar compartment is automatically discharged from the ventilation opening or with the assistance of an exhaust fan, which removes heat from the cabinet, improves heat dissipation efficiency, and ensures the reliable operation of the switchgear. Attached Figure Description

[0013] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0014] Appendix Figure 1This is a perspective view of the switch cabinet based on dual-channel convection heat dissipation of this utility model;

[0015] Appendix Figure 2 This is a perspective view of the omitted part of the structure of the switch cabinet based on dual-channel convection heat dissipation of this utility model;

[0016] Appendix Figure 3 This is a perspective view of the first ventilation component of the switch cabinet based on dual-channel convection heat dissipation according to this utility model.

[0017] The components are as follows: 1. Cabinet; 2. Cable compartment; 3. First busbar compartment; 4. Second busbar compartment; 5. First ventilation cavity; 6. Second ventilation cavity; 7. Component compartment; 8. Insulation board; 9. Partition board; 91. Ventilation hole; 10. Ventilation hole; 11. First louver; 12. Ventilation opening; 13. Exhaust fan; 14. Base plate; 141. First ventilation slot; 142. Second ventilation slot; 143. First folding plate; 144. Second folding plate; 15. First ventilation component; 151. Base plate; 152. Bending plate; 153. Mounting hole; 154. Reinforcing rib; 16. Second louver. Detailed Implementation

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0019] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or may have an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or may have an intervening component present.

[0020] Furthermore, it should be noted that the directional terms such as left, right, up, and down used in the embodiments of this utility model are only relative concepts or references to the normal use of the product, and should not be considered restrictive. The implementation of this utility model will be described in detail below with reference to specific embodiments.

[0021] As attached Figure 1 Appendix Figure 2The diagram shows a switch cabinet based on dual-channel convection heat dissipation according to this invention. It includes a cabinet body 1, a cable compartment 2 inside the cabinet body 1, a first busbar compartment 3 at the top of the cabinet body 1, and a first ventilation cavity 5 and a second ventilation cavity 6 interconnected at the bottom of the cabinet body 1. A second busbar compartment 4 is located between the first busbar compartment 3 and the first ventilation cavity 5, with its upper and lower ends connected to the first busbar compartment 3 and the first ventilation cavity 5, respectively. Several device compartments 7 arranged vertically are installed on one side of the second busbar compartment 4. A heat insulation plate 8 is installed between the second busbar compartment 4 and the device compartments 7 to prevent thermal interference. The bottom device compartments 7 are connected to the second ventilation cavity 6, and the top device compartments 7 are connected to the first busbar compartment 3. A partition plate 9 is installed between adjacent device compartments 7, and ventilation holes 91 are machined on the partition plate 9 to facilitate airflow rising from the bottom and passing through multiple device compartments 7 sequentially. The bottom of the side wall of cabinet 1 has a ventilation hole 10 communicating with the first ventilation chamber 5 and a first louver 11 communicating with the second ventilation chamber 6, facilitating the entry of external cold air. The ventilation hole 10 is close to the second busbar chamber 4 to reduce obstruction, allowing air to rise from the bottom of the second busbar chamber 4 into the first busbar chamber 3, carrying away the heat inside the second busbar chamber 4. A vent 12 is installed on the top of cabinet 1, and a dust filter is installed on the vent 12. After the components in the second busbar chamber 4 or device chamber 7 generate heat, the hot air rises into the first busbar chamber 3 and exits through the vent 12. Cold air from outside cabinet 1 enters the first ventilation chamber 5 and the second ventilation chamber 6 from the bottom through the ventilation hole 10 and the first louver 11, flowing upward into the second busbar chamber 4 and device chamber 7 to replenish them, forming a continuous upward airflow that carries away the heat inside cabinet 1. An exhaust fan 13 is installed inside the vent 12. A temperature sensor is installed inside the cabinet 1. When the temperature inside the cabinet 1 is below 50°C, the exhaust fan 13 remains stationary, and heat dissipation is achieved through natural convection caused by the temperature difference. When the temperature inside the cabinet 1 is above 50°C, the exhaust fan 13 starts, increasing the airflow rate and rapidly lowering the temperature inside the cabinet 1. Since the temperature in the device chamber 7 rises more easily, the exhaust fan 13 is installed above the device chamber 7 to improve heat dissipation efficiency.

[0022] As attached Figure 2 As shown, a base plate 14 connected to the second busbar chamber 4 and the device chamber 7 is installed at the bottom of the first busbar chamber 3. The base plate 14 has a first ventilation slot 141 communicating with the second busbar chamber 4 and a second ventilation slot 142 communicating with the device chamber 7. Both the first ventilation slot 141 and the second ventilation slot 142 are rectangular slots, which makes the ventilation smoother. The edge of the first ventilation slot 141 forms a first folded plate 143 perpendicular to the base plate 14, and the edge of the second ventilation slot 142 forms a second folded plate 144 perpendicular to the base plate 14. The first folded plate 143 and the second folded plate 144 are perpendicular to each other, which increases the strength of the base plate 14 and avoids deformation caused by the slotting. The first folded plate 143 and the second folded plate 144 are integrally formed with the base plate 14, making the overall structure more stable and reliable.

[0023] A first ventilation component 15 is installed at the bottom of the side wall of cabinet 1, as shown in the attached diagram. Figure 3 As shown, the first ventilation component 15 includes a base plate 151 and bent plates 152 formed on both sides of the base plate 151. The bent plates 152 are machined with mounting holes 153 for easy fastening to the cabinet 1. Ventilation holes 10 are located on the base plate 151 and have two rows of horizontal elongated holes. Reinforcing ribs 154 are also formed on the base plate 151 and are located between the two rows of ventilation holes 10 to improve the strength of the first ventilation component 15.

[0024] A second louver 16 is installed at the bottom of the side wall of cabinet 1 away from the second busbar compartment 4 to improve air circulation at the bottom of cabinet 1. The louvers of both the first louver 11 and the second louver 16 are inclined downward from the inside to the outside to prevent dust from falling in.

[0025] This utility model discloses a switch cabinet based on dual-channel convection heat dissipation, which uses natural convection for heat dissipation. Air enters the first ventilation chamber 5 and the second ventilation chamber 6 from the bottom through the ventilation hole 10 and the first louver 11, and then flows along two channels. In one channel, the air enters the second busbar chamber 4 from the first ventilation chamber 5 and then enters the first busbar chamber 3. In the other channel, the air enters the device chamber 7 at the bottom from the second ventilation chamber 5, then passes upward through the ventilation holes 91 on the partition plate 9, passes through multiple device chambers 7 in sequence, and then enters the first busbar chamber 3. The gas in the first busbar chamber 3 is automatically discharged from the ventilation port 12 or with the assistance of the exhaust fan 13, which removes the heat from the cabinet, improves the heat dissipation efficiency, and ensures the reliable operation of the switch cabinet.

[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A switchgear based on double-channel convection heat dissipation, characterized in that: The device includes a cabinet containing a cable compartment. A first busbar compartment is located at the top of the cabinet, and a first and second ventilation chambers, interconnected, are located at the bottom. A second busbar compartment is located between the first and first ventilation chambers, with its upper and lower ends connected to the first busbar compartment and the first ventilation chamber, respectively. Several vertically arranged device compartments are located on one side of the second busbar compartment. A heat insulation plate is installed between the second busbar compartment and the device compartments. The bottom device compartments are connected to the second ventilation chamber, and the top device compartments are connected to the first busbar compartment. A partition plate with ventilation holes is installed between adjacent device compartments. Ventilation holes communicating with the first ventilation chamber and a first louver communicating with the second ventilation chamber are located at the bottom of the side wall of the cabinet, with the ventilation holes close to the second busbar compartment. A ventilation opening with a dust filter is located at the top of the cabinet, and an exhaust fan is located inside the ventilation opening. A temperature sensor is installed inside the cabinet; the exhaust fan activates when the temperature inside the cabinet exceeds 50°C.

2. The switchgear based on dual channel convection heat dissipation according to claim 1, characterized in that: The bottom of the first busbar compartment is provided with a base plate that is connected to the second busbar compartment and the device compartment. The base plate is provided with a first ventilation slot that communicates with the second busbar compartment and a second ventilation slot that communicates with the device compartment. The edge of the first ventilation slot is provided with a first folding plate perpendicular to the base plate, and the edge of the second ventilation slot is provided with a second folding plate perpendicular to the base plate. The first folding plate and the second folding plate are perpendicular to each other.

3. The switchgear based on dual channel convection heat dissipation according to claim 1, characterized in that: A first ventilation component is provided at the bottom of the side wall of the cabinet. The first ventilation component includes a base plate and bent plates disposed on both sides of the base plate. The bent plates are provided with mounting holes, the ventilation holes are disposed on the base plate, and the base plate is provided with reinforcing ribs.

4. The switchgear based on dual channel convection heat dissipation of claim 1, wherein: A second louver is provided at the bottom of the side wall of the cabinet away from the second busbar compartment.

5. The switchgear based on dual channel convection heat dissipation according to claim 4, characterized in that: Both the first and second louvers have louvers that slope downwards from the inside out.

6. The switch cabinet based on dual-channel convection heat dissipation according to claim 1, characterized in that: The exhaust fan is located above the device compartment.

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