Cooling device of low-voltage switch cabinet

Abstract

The invention discloses a cooling device of a low-voltage switch cabinet. The cooling device comprises a cabinet body, an air inlet mechanism is installed at the bottom of the cabinet body, an air outlet assembly is installed at the top end of the back of the cabinet body, heat dissipation mechanisms are installed on the left side and the right side in the cabinet body, an assembly frame is installed between the heat dissipation mechanisms on the two sides, and the cabinet body is provided with double doors on the outer side of the assembly frame. The low-voltage switch cabinet is provided with the air inlet mechanism and the air outlet assembly, so that air in the low-voltage switch cabinet can flow, cold air coming out of the air inlet mechanism can cool the interior of the cabinet body, the active cooling effect is achieved, the cabinet body is further cooled by being matched with the heat dissipation mechanism for synchronous use, and the service life of the low-voltage switch cabinet is prolonged. Certain damage to equipment caused by internal overheating during working is prevented, the service life of the low-voltage switch cabinet is prolonged, and potential safety hazards are reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of low-voltage switch cabinets, and particularly relates to a cooling device for a low-voltage switch cabinet. Background Art

[0002] A low-voltage switch cabinet is a device used in a power system, mainly for the low-voltage power distribution part, usually installed in a distribution room. It consists of terminal blocks, various knife switches, protection devices (such as air switches, fuses), measuring devices (such as voltmeters, ammeters), and metering devices (such as wattmeters), etc.

[0003] The low-voltage switch cabinet plays an important role in the power system, including reasonably allocating power sources, controlling the fault range, facilitating line maintenance, and placing various protection devices, etc. It is widely used in industries such as power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings, etc., and adapts to various power supply and distribution requirements.

[0004] However, the internal air flow of the low-voltage switch cabinet in the prior art is poor, and it lacks the ability of active cooling. This leads to overheating inside the low-voltage switch cabinet during operation, causing certain damage to components, prone to failures, reducing the service life of the low-voltage switch cabinet, and easily bringing potential safety hazards. Therefore, there is an urgent need for a cooling device for a low-voltage switch cabinet to solve the above problems. Summary of the Invention

[0005] Aiming at the problems raised in the above background art, the purpose of the present invention is: to provide a cooling device for a low-voltage switch cabinet.

[0006] To achieve the above technical purpose, the technical solution adopted by the present invention is as follows:

[0007] A cooling device for a low-voltage switch cabinet includes a cabinet body. An air inlet mechanism is installed at the bottom of the cabinet body, an air outlet assembly is installed at the top of the back of the cabinet body, heat dissipation mechanisms are installed on the left and right sides inside the cabinet body, an assembly rack is installed between the two heat dissipation mechanisms, and double doors are provided on the outside of the cabinet body at the assembly rack.

[0008] Further defined, the air inlet mechanism includes a base, the base is fixedly installed at the bottom of the cabinet body, a refrigeration box is installed at the inner bottom of the base, an output pump is installed inside the refrigeration box, the output end of the output pump is connected to an output pipe, the output end of the output pipe is connected to a cooling plate, the cooling plate is provided with a plurality of air holes, the output end of the cooling plate is connected to a return pipe, the output end of the return pipe is connected to the refrigeration box, the cooling plate is arranged on the top of the base, a baffle is installed on the outside of the refrigeration box of the base, a filtering component is installed on the baffle, and an air extractor is installed inside the base at the filtering component. Such a structural design is convenient for outputting flowing air into the cabinet body for cooling treatment.

[0009] Further defined, an assembly plate is installed on the outer side of the cooling plate, the assembly plate is installed between the base and the cabinet body, and the assembly plate is provided with clearance grooves corresponding to the output pipe and the return pipe. Such a structural design facilitates the installation and use of the cooling plate.

[0010] Further defined, the filtering assembly includes a primary filter screen, a HEPA filter screen, and a zeolite filter screen that are sequentially installed in the baffle from left to right. Such a structural design has a good filtering effect when the air enters.

[0011] Further defined, side plates are installed on both sides of the exhaust fan in the refrigeration box, the top of the side plates is installed at the bottom of the assembly plate, and the two side plates cooperate with the assembly plate and the refrigeration box to form a flow air duct, and the flow air duct is arranged on the lower side of the cooling plate. Such a structural design enables the external air to be guided to flow through the flow air duct after being drawn in by the exhaust fan.

[0012] Further defined, the air outlet assembly includes an air outlet plate, an exhaust fan is installed on the inner side of the air outlet plate, a plurality of downwardly inclined exhaust grooves are provided on the outer side of the air outlet plate, and a dust-proof net is installed on the outer side of the exhaust grooves of the air outlet plate. Such a structural design has a dust-proof effect while achieving the exhaust effect.

[0013] Further defined, the size of the exhaust fan is larger than the size of the exhaust fan. Such a structural design improves the convection effect.

[0014] Further defined, the heat dissipation mechanism includes a heat conduction plate installed on the cabinet body, a cooling cavity is formed between the heat conduction plate and the side wall of the cabinet body, a liquid infusion pipe and a liquid discharge pipe are installed on both sides of the bottom of the cooling cavity, the other sides of the liquid infusion pipe and the liquid discharge pipe are both connected to the refrigeration box, a working pump is connected to the liquid infusion pipe in the refrigeration box, a control valve is installed in the liquid discharge pipe, a temperature sensor is installed in the cooling cavity, a plurality of evenly arranged heat dissipation fins are installed on the heat conduction plate, the other sides of the plurality of heat dissipation fins penetrate through the cabinet body and extend to the outside thereof, and a sealing sleeve is installed on the cabinet body at the penetration of the heat dissipation fins. Such a structural design further improves the cooling effect.

[0015] Further defined, heat-conducting silicone grease is applied to the connection parts of both sides of the assembly frame and the heat conduction plate. Such a structural design improves the heat conduction effect.

[0016] Further defined, a plurality of buffer sleeves are installed on the top of the cabinet body, springs are installed in the buffer sleeves, the free ends of the springs are connected to buffer columns, support seats are installed on the tops of the buffer columns, and a shielding plate is installed on the top of the support seats. Such a structural design can provide sunshade and rain protection when the cabinet body is installed outdoors, as well as protection against damage caused by falling objects from a height.

[0017] The beneficial effects of the present invention are as follows: By providing an air inlet mechanism and an air outlet assembly, the air inside the low-voltage switchgear can flow, and the cold air coming out of the air inlet mechanism can cool the temperature inside the cabinet, achieving the effect of active cooling. Moreover, when used in synchronization with the heat dissipation mechanism, it further improves the cooling of the cabinet body, prevents overheating inside during operation from causing certain damage to the equipment, increases the service life of the low-voltage switchgear, and reduces the occurrence of potential safety hazards. Brief Description of the Drawings

[0018] The present invention can be further illustrated by the non-limiting embodiments given in the drawings;

[0019] Figure 1 It is an axonometric structural schematic diagram of a temperature reduction device for a low-voltage switchgear according to an embodiment of the present invention;

[0020] Figure 2 It is a transverse sectional structural schematic diagram of a temperature reduction device for a low-voltage switchgear according to an embodiment of the present invention;

[0021] Figure 3 It is a vertical sectional structural schematic diagram of a temperature reduction device for a low-voltage switchgear according to an embodiment of the present invention;

[0022] Figure 4 It is a sectional structural schematic diagram of the heat dissipation mechanism of a temperature reduction device for a low-voltage switchgear according to an embodiment of the present invention;

[0023] Figure 5 It is a sectional structural schematic diagram of the temperature reduction plate of a temperature reduction device for a low-voltage switchgear according to an embodiment of the present invention;

[0024] The main component symbols are explained as follows:

[0025] Cabinet body 1, air inlet mechanism 2, air outlet assembly 3, heat dissipation mechanism 4, assembly frame 5, double-door 6, base 7, refrigeration box 8, output pump 9, output pipe 10, temperature reduction plate 11, air holes 12, return pipe 13, baffle 14, filter assembly 15, exhaust fan 16, assembly plate 17, clearance groove 18, primary filter 19, HEPA filter 20, zeolite filter 21, side plate 22, flow air duct 23, air outlet plate 24, exhaust fan 25, exhaust slot 26, dust-proof net 27, heat conduction plate 28, temperature reduction cavity 29, infusion pipe 30, drain pipe 31, working pump 32, control valve 33, temperature sensor 34, heat dissipation fins 35, sealing sleeve 36, thermal grease 37, buffer sleeve 38, spring 39, buffer column 40, support seat 41, shielding plate 42. Detailed Embodiments

[0026] In order to enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be further described below in conjunction with the drawings and embodiments.

[0027] Example 1, as shown in Figure 1 and Figure 2 shown, a cooling device for a low-voltage switchgear cabinet, an air intake mechanism 2 is installed at the bottom of the cabinet body 1, an air outlet assembly 3 is installed at the top of the back of the cabinet body 1, heat dissipation mechanisms 4 are installed on the left and right sides inside the cabinet body 1, an assembly frame 5 is installed between the two heat dissipation mechanisms 4, and double doors 6 are provided on the outside of the cabinet body 1 at the assembly frame 5.

[0028] In this embodiment, when wiring terminals, various knife switches, protection devices (such as air switches, fuses), measuring devices (such as voltmeters, ammeters), and metering devices (such as wattmeters) and other devices are installed on the assembly frame 5 for use, the heat generated by the devices accumulates inside the cabinet body 1. The air intake mechanism 2 is started, and the external air of the cabinet body 1 is pumped into the cabinet body 1 through the air intake mechanism 2, and then the flowing air is input from the lower side of the cabinet body 1, so that the flowing air takes away the heat inside the cabinet body 1 and moves upward. At the same time, the upper heat dissipation mechanism 4 is started, so that the heat can be quickly discharged from the upper side, achieving the effect of rapid heat dissipation and temperature reduction. Moreover, the assembly frame 5 can also conduct the heat of the devices to the heat dissipation mechanism 4, and the heat dissipation mechanism 4 is used for auxiliary heat dissipation, further improving the heat dissipation and temperature reduction effect, and preventing heat from accumulating inside the cabinet body 1 and affecting the devices.

[0029] Example 2, as shown in 1, Figure 2 and Figure 3 shown, this embodiment adds the following structure on the basis of Example 1. The air intake mechanism 2 includes a base 7, the base 7 is fixedly installed at the bottom of the cabinet body 1, a refrigeration box 8 is installed at the inner bottom of the base 7, an output pump 9 is installed inside the refrigeration box 8, the output end of the output pump 9 is connected to an output pipe 10, the output end of the output pipe 10 is connected to a cooling plate 11, the cooling plate 11 is provided with a plurality of air holes 12, the output end of the cooling plate 11 is connected to a return pipe 13, the output end of the return pipe 13 is connected to the refrigeration box 8, the cooling plate 11 is arranged on the top of the base 7, a baffle 14 is installed on the outside of the base 7 at the refrigeration box 8, a filtering component 15 is installed on the baffle 14, and an exhaust fan 16 is installed inside the base 7 at the filtering component 15.

[0030] In this embodiment, during use, the output pump 9 is started first, the output pump 9 pumps the condensate in the refrigeration box 8 into the output pipe 10, and the output pipe 10 outputs it into the cooling plate 11, so that the condensate flows in the cooling plate 11 and returns to the refrigeration box 8 through the return pipe 13. After the exhaust fan 16 is started, the exhaust fan 16 pumps the external air into the cabinet body 1, and the filtering component 15 can filter the impurities carried by the air, so that the filtered air is input into the cabinet body 1 through the air holes 12 on the cooling plate 11. When the air passes through the cooling plate 11, it can play a role in cooling, so that the flowing air forms cold air blowing inside the cabinet body 1, thereby being able to reduce the internal temperature.

[0031] Example 3, as shown inFigure 2 and Figure 5 As shown in Figure 5 , the following structure is added in this embodiment on the basis of Embodiment 2. An assembly plate 17 is installed outside the cooling plate 11. The assembly plate 17 is installed between the base 7 and the cabinet body 1. The assembly plate 17 is provided with clearance grooves 18 at the positions corresponding to the output pipe 10 and the return pipe 13.

[0032] In this embodiment, during installation, the cooling plate 11 can be easily installed and disassembled through the assembly plate 17, which is convenient for subsequent maintenance and use.

[0033] Embodiment 4, as Figure 3 As shown in Figure 3 , the following structure is added in this embodiment on the basis of Embodiment 2. The filtering assembly 15 includes a primary filter screen 19, a HEPA filter screen 20, and a zeolite filter screen 21 that are sequentially installed in the baffle 14 from left to right.

[0034] In this embodiment, during use, the primary filter screen 19 can filter large particulate impurities in the air, the HEPA filter screen 20 can filter out particles with a diameter of more than 0.3 microns, and the zeolite filter screen 21 can further adsorb and filter various fine particles, thereby effectively preventing dust from entering the cabinet body 1.

[0035] Embodiment 5, as Figure 2 and Figure 3 As shown in Figure 3 , the following structure is added in this embodiment on the basis of Embodiment 2. Side plates 22 are installed on both sides of the suction fan 16 of the refrigeration box 8. The top of the side plates 22 is installed at the bottom of the assembly plate 17. The two side plates 22 cooperate with the assembly plate 17 and the refrigeration box 8 to form a flow air duct 23. The flow air duct 23 is arranged on the lower side of the cooling plate 11.

[0036] In this embodiment, during installation, the two side plates 22 cooperate with the assembly plate 17 and the refrigeration box 8 to form a flow air duct 23, so that the fan 16 sucks in external air and then enters the flow air duct 23, causing the flowing air to flow in the flow air duct 23 and enter the cabinet body 1 through the cooling plate 11 for cooling work.

[0037] Embodiment 6, as Figure 3 As shown in Figure 3 , the following structure is added in this embodiment on the basis of Embodiment 1. The air outlet assembly 3 includes an air outlet plate 24. An exhaust fan 25 is installed inside the air outlet plate 24. A plurality of downwardly inclined exhaust grooves 26 are provided on the outside of the air outlet plate 24. A dust-proof net 27 is installed on the outside of the air outlet plate 24 at the exhaust grooves 26.

[0038] In this embodiment, during use, by starting the exhaust slot 26, the exhaust slot 26 discharges the internally flowing gas through the exhaust slot 26 into the cabinet 1, enabling the cold air to circulate within the cabinet 1, thereby achieving a cooling effect. Moreover, the downwardly inclined exhaust slot 26 can prevent rainwater from entering, and the dust-proof net 27 can prevent dust from entering.

[0039] Embodiment 7 is as follows. Figure 3 As shown, on the basis of Embodiment 6, this embodiment adds the following structure: the size of the exhaust fan 16 is larger than that of the exhaust blower 25.

[0040] In this embodiment, during use, the large-sized exhaust fan 16 can push more air, thus covering a larger area, while the small-sized exhaust blower 25 is responsible for evenly discharging the processed air. This combination can ensure higher ventilation efficiency, rapid cooling and air replacement, achieving forward air intake and rear air exhaust, forming convective air, and stronger heat dissipation.

[0041] Embodiment 8 is as follows. Figure 2 and Figure 4 As shown, on the basis of Embodiment 1, this embodiment adds the following structure: the heat dissipation mechanism 4 includes a heat conducting plate 28 installed in the cabinet 1. A cooling cavity 29 is formed between the heat conducting plate 28 and the side wall of the cabinet 1. On both sides of the bottom of the cooling cavity 29, an infusion pipe 30 and a drain pipe 31 are installed. The other sides of the infusion pipe 30 and the drain pipe 31 are both connected to the refrigeration box 8. The infusion pipe 30 is connected with a working pump 32 in the refrigeration box 8. A control valve 33 is installed in the drain pipe 31. A temperature sensor 34 is installed in the cooling cavity 29. A number of evenly arranged heat dissipation fins 35 are installed on the heat conducting plate 28. The other sides of the number of heat dissipation fins 35 penetrate through the cabinet 1 and extend to the outside thereof. A sealing sleeve 36 is installed on the cabinet 1 at the penetration position of the heat dissipation fins 35.

[0042] In this embodiment, during use, by starting the working pump 32, the working pump 32 inputs the condensate in the refrigeration box 8 into the cooling cavity 29 through the infusion pipe 30. When the assembly rack 5 conducts the heat of the equipment, the contacting heat conducting plate 28 can achieve a cooling effect, and the heat conducting plate 28 can also conduct the heat to the heat dissipation fins 35. After the heat reaches the heat dissipation fins 35, the condensate can further contact the heat dissipation fins 35 for cooling work. Moreover, the outer sides of the heat dissipation fins 35 extend to the outside of the cabinet 1, and the heat can also be discharged from the cabinet for heat dissipation work, achieving a cooling effect.

[0043] And during the use process, the temperature sensor 34 can detect the temperature of the condensate in real time. When the condensate steadily rises and loses the cooling effect, the control valve 33 is opened, so that all the liquid in the cooling cavity 29 is discharged into the refrigeration box 8. At the same time, the working pump 32 is started again to input the coolant in the refrigeration box 8 into the cooling cavity 29 for use.

[0044] Example 9, as Figure 2 shown, on the basis of Example 8, the following structure is added in this example. Thermal grease 37 is applied at the connection between both sides of the mounting frame 5 and the heat conducting plate 28.

[0045] In this example, during operation, through the thermal grease 37, the heat conducting performance between the mounting frame 5 and the heat conducting plate 28 is good, and rapid heat conduction work can be carried out.

[0046] Example 10, as Figure 1 and Figure 2 shown, on the basis of Example 1, the following structure is added in this example. A plurality of buffer sleeves 38 are installed on the top of the cabinet body 1. Springs 39 are installed inside the buffer sleeves 38. The free end of the spring 39 is connected to a buffer column 40. A support seat 41 is installed on the top of the buffer column 40. A shielding plate 42 is installed on the top of the support seat 41. Such a structural design can provide sunshade and rain protection when the cabinet body 1 is installed outdoors, as well as protection against damage caused by falling objects from a height.

[0047] In this example, when the cabinet body 1 is installed and used outdoors, the shielding plate 42 can provide sunshade and rain protection for the cabinet body 1. At the same time, when the shielding plate 42 is impacted, it can push the support seat 41, the support seat 41 pushes the buffer column 40, and the buffer column 40 compresses the spring 39. The impact force is reduced by the spring 39, thereby protecting the cabinet body 1.

[0048] The above embodiments only exemplarily illustrate the principles and effects of the present invention, rather than limiting the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A cooling device for a low-voltage switchgear cabinet, comprising a cabinet body (1), characterized in that: An air inlet mechanism (2) is installed at the bottom of the cabinet body (1), an air outlet assembly (3) is installed at the top of the back of the cabinet body (1), heat dissipation mechanisms (4) are installed on the left and right sides inside the cabinet body (1), an assembly frame (5) is installed between the two heat dissipation mechanisms (4), and double doors (6) are provided on the outer side of the cabinet body (1) at the assembly frame (5).

2. The cooling device for a low-voltage switchgear according to claim 1, characterized in that: The air inlet mechanism (2) includes a base (7), the base (7) is fixedly installed at the bottom of the cabinet body (1), a refrigeration box (8) is installed at the inner bottom of the base (7), an output pump (9) is installed in the refrigeration box (8), the output end of the output pump (9) is connected to an output pipe (10), the output end of the output pipe (10) is connected to a cooling plate (11), the cooling plate (11) is provided with a plurality of air holes (12), the output end of the cooling plate (11) is connected to a return pipe (13), the output end of the return pipe (13) is connected to the refrigeration box (8), the cooling plate (11) is arranged on the top of the base (7), a baffle (14) is installed on the outer side of the base (7) of the refrigeration box (8), a filter assembly (15) is installed on the baffle (14), and an air extractor (16) is installed on the inner side of the base (7) of the filter assembly (15).

3. The cooling device for a low-voltage switchgear according to claim 2, characterized in that: An assembly plate (17) is installed on the outer side of the cooling plate (11), the assembly plate (17) is installed between the base (7) and the cabinet body (1), and the assembly plate (17) is provided with clearance grooves (18) corresponding to the output pipe (10) and the return pipe (13).

4. The cooling device for a low-voltage switchgear according to claim 3, characterized in that: The filter assembly (15) includes a primary filter screen (19), a HEPA filter screen (20), and a zeolite filter screen (21) installed in the baffle (14) from left to right in sequence.

5. The cooling device for a low-voltage switchgear according to claim 4, characterized in that: Side plates (22) are installed on both sides of the refrigeration box (8) of the air extractor (16), the top of the side plates (22) is installed at the bottom of the assembly plate (17), and the two side plates (22) cooperate with the assembly plate (17) and the refrigeration box (8) to form a flow air duct (23), and the flow air duct (23) is arranged on the lower side of the cooling plate (11).

6. The cooling device for a low-voltage switchgear according to claim 5, wherein: The air outlet assembly (3) includes an air outlet plate (24), an exhaust fan (25) is installed on the inner side of the air outlet plate (24), a plurality of downwardly inclined exhaust grooves (26) are provided on the outer side of the air outlet plate (24), and a dust-proof net (27) is installed on the outer side of the air outlet plate (24) at the exhaust grooves (26).

7. The cooling device for a low-voltage switchgear according to claim 6, characterized in that: The size of the air extractor (16) is larger than the size of the exhaust fan (25).

8. The cooling device for a low-voltage switchgear according to claim 7, wherein: The heat dissipation mechanism (4) includes a heat conduction plate (28) installed on the cabinet body (1). A cooling cavity (29) is formed between the heat conduction plate (28) and the side wall of the cabinet body (1). Both sides of the bottom of the cooling cavity (29) are provided with an infusion pipe (30) and a drainage pipe (31). The other sides of the infusion pipe (30) and the drainage pipe (31) are both communicated with a refrigeration box (8). The infusion pipe (30) is connected with a working pump (32) inside the refrigeration box (8). A control valve (33) is installed in the drainage pipe (31). A temperature sensor (34) is installed in the cooling cavity (29). A number of evenly arranged heat dissipation fins (35) are installed on the heat conduction plate (28). The other sides of the number of heat dissipation fins (35) penetrate through the cabinet body (1) and extend to the outside thereof. A sealing sleeve (36) is installed at the penetration of the cabinet body (1) where the heat dissipation fins (35) are located.

9. The cooling device for a low-voltage switchgear according to claim 8, characterized in that: Thermal grease (37) is applied at the connection between both sides of the assembly frame (5) and the heat conduction plate (28).

10. The cooling device for a low-voltage switchgear according to claim 9, wherein: A number of buffer sleeves (38) are installed on the top of the cabinet body (1). Springs (39) are installed inside the buffer sleeves (38). The free ends of the springs (39) are connected with buffer columns (40). A support seat (41) is installed at the top of the buffer columns (40). A shielding plate (42) is installed on the top of the support seat (41).

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