A high-voltage power distribution cabinet heat dissipation device

Abstract

The application provides a high-voltage power distribution cabinet heat dissipation device, and relates to the technical field of high-voltage power distribution cabinet heat dissipation, comprising a power distribution cabinet body, a U-shaped air distribution assembly, a heat dissipation channel, an adjustable air flow channel and a cold air distribution assembly. The application divides the inside of the power distribution cabinet body into a power distribution area and a heat dissipation distribution area by adjusting the installation positions of the porous mounting frame and the power distribution element mounting horizontal rack, installs the U-shaped air distribution assembly in the heat dissipation distribution area, and forms a circulating channel with the heat dissipation channel. The application separately designs the heat dissipation distribution area, and the cold air distribution assembly is used for distribution design. In specific application, the user can adjust the installation position of the cold air distribution shell of the cold air distribution assembly to realize efficient heat dissipation of the power distribution element installation position prone to heat generation / high heat generation.

Description

Technical Field

[0001] This invention relates to the field of heat dissipation technology for high-voltage switchgear, specifically to a heat dissipation device for high-voltage switchgear. Background Technology

[0002] High-voltage switchgear is a key piece of equipment used for power distribution in power systems. It houses a variety of power distribution components. During use, these components generate heat. If the heat cannot be absorbed in time, it will have a concentrated effect, further affecting the operation of the components and even causing them to overheat and be damaged, or even resulting in a fire. Therefore, it is essential to equip high-voltage switchgear with heat dissipation devices.

[0003] When high-voltage distribution cabinets are actually used, the installation position and quantity of internal electrical components need to be specifically designed. Therefore, the heat dissipation structure inside many existing dedicated high-voltage distribution cabinets is specially designed and has a good heat dissipation effect. However, the heat dissipation effect inside general / universal high-voltage distribution cabinets is obviously insufficient. They can only try to place the power distribution components that are prone to heat generation or have high heat generation as close as possible to the heat dissipation outlet. In actual use, the problem of high-voltage distribution cabinet overheating will frequently occur. Therefore, this invention provides a heat dissipation device for high-voltage distribution cabinets. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a heat dissipation device for high-voltage distribution cabinets. This device solves the problem that the heat dissipation effect inside general high-voltage distribution cabinets is significantly insufficient. They can only place the power distribution components that are prone to heat generation or generate high heat as close as possible to the heat dissipation outlet. In actual use, the high-voltage distribution cabinet will frequently overheat.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A heat dissipation device for a high-voltage switchgear includes:

[0007] The main body of the power distribution cabinet has a multi-hole mounting bracket fixedly connected to its inner side wall. A horizontal mounting frame for mounting power distribution components is fixedly mounted on the multi-hole mounting bracket by bolts. The multi-hole mounting bracket and the horizontal mounting frame for mounting power distribution components divide the interior of the main body of the power distribution cabinet into a power distribution area and a heat dissipation distribution area. The power distribution area is close to the door frame of the main body of the power distribution cabinet.

[0008] The U-shaped air distribution assembly is fixedly installed on the inner side of the heat dissipation distribution area. The two top ends of the U-shaped air distribution assembly are a first air inlet and a first air outlet, respectively. A first air inlet is opened on the side of the U-shaped air distribution assembly near the first air inlet, and a second air inlet is opened on the side of the U-shaped air distribution assembly near the first air outlet.

[0009] The heat dissipation channel has an installation platform on the top outer side of the main body of the power distribution cabinet. The heat dissipation channel is fixedly installed on the inner side of the installation platform, and the two ends of the heat dissipation channel are respectively connected to the first air inlet end and the first air outlet end of the U-shaped air distribution assembly. At least one fan assembly is installed on the heat dissipation channel.

[0010] An adjustable airflow channel is installed in the U-shaped air distribution assembly near the second air inlet;

[0011] A cold air distribution assembly, one end of which is connected to a U-shaped air distribution assembly and located between the adjustable airflow channel and the first air inlet, and the air outlet of the cold air distribution assembly is located in the power distribution area.

[0012] Preferably, the heat dissipation channel includes:

[0013] The channel housing has a second air inlet and a second air outlet respectively provided at the bottom of both ends. The second air inlet is connected to the first air outlet, and the second air outlet is connected to the first air inlet.

[0014] The channel housing has a first side and a second side arranged in parallel. The first side of the channel housing has a plurality of first recesses equidistantly provided, and the second side of the channel housing has a plurality of second recesses equidistantly provided. The first recesses and the second recesses are staggered from each other.

[0015] Thermoelectric cooling modules are fixedly connected inside both the first and second recesses, with the cooling side of the thermoelectric cooling modules facing the inside of the first and second recesses.

[0016] Preferably, the number of fan assemblies is not greater than the number of first recesses, and the fan assemblies are installed on the second side of the channel housing, with the positions of the fan assemblies corresponding to the positions of the first recesses.

[0017] Preferably, an anti-backflow component is fixedly connected to the inner side of the U-shaped air distribution assembly and at the position corresponding to the first air inlet, and the anti-backflow component is in the shape of an inverted "L".

[0018] Preferably, the air conditioning distribution assembly includes:

[0019] The airway tube has multiple air outlets on its side, and the first end of the airway tube is connected to the air outlet of the U-shaped air distribution assembly.

[0020] A cooling distribution housing, wherein a connecting lug is fixedly connected to the end of the cooling distribution housing, the connecting lug is fixedly installed to a multi-hole mounting bracket by bolts, and air holes are opened on one / two sides of the upper and lower surfaces of the cooling distribution housing, and the second end of the air duct is connected to the cooling distribution housing;

[0021] The air outlet that is not connected to the airway tube is fixedly fitted with a blocking plate.

[0022] Preferably, the adjustable airflow channel includes:

[0023] The first block is a U-shaped valve distribution assembly with a rectangular cross-sectional shape. The U-shaped valve distribution assembly has a third side and a fourth side that are parallel to each other on its inner side. The first block is fixedly installed on the third side of the U-shaped valve distribution assembly. The first block has an upwardly inclined first surface on the side of the first block away from the third side of the U-shaped valve distribution assembly.

[0024] The second block has a sliding opening on the fourth side of the U-shaped air distribution assembly. A connecting block is fixedly connected to the back of the second block. A second inclined surface parallel to the first inclined surface is opened on the front of the second block. The connecting block slides inside the sliding opening.

[0025] The cover is slidably connected to the outer side of the U-shaped air distribution assembly. A rectangular hole is provided on the side of the cover. One end of the connecting block passes through the rectangular hole and is rotatably mounted with a pressure block via a rotating shaft. A torsion spring is sleeved on the rotating shaft. The first end of the torsion spring abuts against the inner side of the connecting block, and the second end of the torsion spring is stuck on the outer side of the pressure block.

[0026] Preferably, the cover is a C-shaped structure that surrounds three sides.

[0027] Preferably, a filter-type drying component is provided inside the U-shaped gas distribution component and / or inside the cold air distribution component, and a silica gel desiccant is provided on the screen of the filter-type drying component.

[0028] Preferably, the main body of the power distribution cabinet is provided with terminals for supplying power to the thermoelectric cooling module of the heat dissipation channel.

[0029] Preferably, the top mounting platform of the power distribution cabinet body is fitted with an outer cover via a hinge, and the heat dissipation channel is located inside the outer cover.

[0030] This invention provides a heat dissipation device for high-voltage switchgear. It has the following beneficial effects:

[0031] 1. This invention, by adjusting the installation positions of the perforated mounting bracket and the horizontal mounting frame for power distribution components inside the main body of the power distribution cabinet, divides the interior of the main body of the power distribution cabinet into a power distribution area and a heat dissipation distribution area. A U-shaped air distribution assembly is installed in the heat dissipation distribution area, and a heat dissipation channel is installed at the external mounting platform of the main body of the power distribution cabinet. The heat dissipation channel and the U-shaped air distribution assembly form a circulation channel. At least one fan assembly installed on the heat dissipation channel drives air circulation. Air inside the main body of the power distribution cabinet is drawn into the circulation channel through a second air inlet on the side of the U-shaped air distribution assembly, where heat exchange is completed. When the cooled gas flows through the first air inlet, a negative pressure is generated at the first air inlet due to Bernoulli's principle. The gas inside the main body of the power distribution cabinet is drawn into the U-shaped air distribution assembly and mixed with the cooled gas to form cooled gas. The cooling of the power distribution components is then achieved by discharging the cooled gas through the cold air distribution assembly. An adjustable airflow channel is designed to adjust the flow rate of the cooled gas returning to the secondary circulation. During high-efficiency heat dissipation, the adjustable airflow channel can be adjusted less to draw in as much gas as possible from the main body of the power distribution cabinet through the second air inlet. When high-efficiency heat dissipation is not required, the adjustable airflow channel can be adjusted slightly larger to allow a larger flow rate of the gas returning to the secondary circulation, while drawing in less gas from the main body of the power distribution cabinet through the second air inlet, thus saving energy. Since this invention has a separately designed heat dissipation distribution area, which is distributed by the cold air distribution assembly, users can adjust the installation position of the cold air distribution housing of the cold air distribution assembly to achieve efficient heat dissipation at the installation location of power distribution components that are prone to heat generation or generate high heat.

[0032] 2. In this invention, by designing a specific structure for the heat dissipation channel, the channel has a first recess and a second recess on both sides, so that the channel shape inside the channel housing is a multi-fold linear curved channel, which can better achieve heat exchange with the thermoelectric cooling module. Furthermore, there are multiple thermoelectric cooling modules, and at least one can be selected to be turned on according to actual needs, thus making it more versatile. Attached Figure Description

[0033] Figure 1 This is a perspective view of a high-voltage distribution cabinet heat dissipation device installed in a distribution cabinet, as proposed in this invention.

[0034] Figure 2 This is a front view of a high-voltage distribution cabinet heat dissipation device installed in a distribution cabinet, as proposed in this invention.

[0035] Figure 3 This is a three-dimensional schematic diagram of a heat dissipation device for a high-voltage distribution cabinet proposed in this invention;

[0036] Figure 4 for Figure 3 Enlarged view of a portion of point A in the middle;

[0037] Figure 5This is a front view of a high-voltage switchgear heat dissipation device proposed in this invention;

[0038] Figure 6 for Figure 5 A sectional view of the section line at point CC;

[0039] Figure 7 This is a cross-sectional view of a high-voltage switchgear heat dissipation device proposed in this invention;

[0040] Figure 8 for Figure 7 A magnified view of section B in the middle.

[0041] The components include: 1. Main body of the distribution cabinet; 2. Multi-hole mounting bracket; 3. Horizontal mounting frame for power distribution components; 4. Mounting platform; 5. U-shaped air distribution assembly; 6. Heat dissipation channel; 601. Channel housing; 602. First recess; 603. Second recess; 604. Thermoelectric cooling module; 7. First air inlet; 8. Second air inlet; 9. Anti-backflow component; 10. Cold air distribution assembly; 1001. Air duct; 1002. Cold air... Distribution housing; 1002a, connecting ear; 1002b, vent; 11, fan assembly; 12, adjustable airflow channel; 1201, first blocking block; 1202, second blocking block; 1203, sliding port; 1204, connecting block; 1205, cover; 1206, pressure block; 1207, torsion spring; 1207a, first end; 1207b, second end; a, power distribution area; b, heat dissipation distribution area. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example 1:

[0044] like Figures 1-8 As shown, an embodiment of the present invention provides a heat dissipation device for a high-voltage distribution cabinet, including: a distribution cabinet body 1, a U-shaped air distribution assembly 5, a heat dissipation channel 6, an adjustable airflow channel 12, and a cold air diversion assembly 10.

[0045] Among them, the inner side wall of the main body 1 of the power distribution cabinet is fixedly connected to a multi-hole mounting bracket 2. Two sets of multi-hole mounting brackets 2 are symmetrically arranged. A power distribution component mounting crossbeam 3 is fixedly installed on the multi-hole mounting bracket 2 by bolts. The two ends of the power distribution component mounting crossbeam 3 correspond to the two sets of multi-hole mounting brackets 2. The power distribution component mounting crossbeam 3 is used to install power distribution components.

[0046] In actual use, the number and installation position of the power distribution component mounting brackets 3 are designed according to the specific installation requirements inside the power distribution cabinet. The multi-hole mounting bracket 2 and the power distribution component mounting brackets 3 divide the interior of the power distribution cabinet body 1 into a power distribution area a and a heat dissipation distribution area b. The power distribution area a is close to the door frame of the power distribution cabinet body 1, and the heat dissipation distribution area b is close to the inner bottom of the power distribution cabinet body 1. The U-shaped air distribution assembly 5 is fixedly installed on the inner side of the heat dissipation distribution area b. The two top ends of the U-shaped air distribution assembly 5 extend out of the power distribution cabinet body 1. The two top ends of the U-shaped air distribution assembly 5 are the first air inlet and the first air outlet, respectively. A first air inlet 7 is opened on the side of the U-shaped air distribution assembly 5 near the first air inlet, and a second air inlet 8 is opened on the side of the U-shaped air distribution assembly 5 near the first air outlet. Both the first air inlet 7 and the second air inlet 8 are used to draw hot air from inside the power distribution cabinet body 1 into the circulation channel formed by the U-shaped air distribution assembly 5 and the heat dissipation channel 6. The top of the power distribution cabinet body 1 An installation platform 4 is provided on the outer side. A heat dissipation channel 6 is fixedly installed on the inner side of the installation platform 4. The two ends of the heat dissipation channel 6 are respectively connected to the first air inlet and the first air outlet of the U-shaped air distribution assembly 5. At least one fan assembly 11 is installed on the heat dissipation channel 6. The U-shaped air distribution assembly 5 and the heat dissipation channel 6 form a ring-shaped circulating air passage. The fan assembly 11 provides driving force for the airflow inside the circulating air passage. An adjustable airflow passage 12 is installed on the U-shaped air distribution assembly 5 near the second air inlet 8. The adjustable airflow passage 12 is used to control the airflow of the secondary circulation, that is, to control the airflow rate entering from the second air inlet 8. One end of the cold air diversion assembly 10 is connected to the U-shaped air distribution assembly 5 and is located between the adjustable airflow passage 12 and the first air inlet 7. The air outlet of the cold air diversion assembly 10 is located in the power distribution area a. The specific location of the cold air diversion assembly 10 is designed according to actual needs. It is preferable to place the air outlet of the cold air diversion assembly 10 near the power distribution components that are prone to heat generation / high heat generation.

[0047] When in use, the fan assembly 11 is powered on and operates, drawing hot air from inside the main body 1 of the distribution cabinet through the second air inlet 8. The hot air passes through the heat dissipation channel 6 and exchanges heat with the thermoelectric cooling module 604, cooling the hot air into cold air, which is then accelerated to the first air inlet of the U-shaped air distribution assembly 5. When it passes near the first air inlet 7, a negative pressure is generated at the first air inlet 7 by relying on Bernoulli's principle, which draws hot air from inside the main body 1 of the distribution cabinet through the first air inlet 7. This hot air mixes with the cold air and is then blown out through the cold air diversion assembly 10, blowing it near the power distribution components that are prone to heat generation / high heat generation, thereby achieving efficient heat dissipation for the power distribution components that are prone to heat generation / high heat generation. Furthermore, because the airflow near the first air inlet 7 and the second air inlet 8 in the heat dissipation distribution area b is drawn away, airflow is triggered inside the main body 1 of the distribution cabinet, thereby achieving heat dissipation for the entire interior of the main body 1 of the distribution cabinet.

[0048] The heat dissipation channel 6 includes: a channel housing 601, a first recess 602, a second recess 603, and a thermoelectric cooling module 604.

[0049] The thermoelectric cooling module 604 has a cooling side and a heating side. The working principle of both is based on the Peltier effect. When a direct current passes through the thermoelectric cooling module, one side (cold side) will absorb heat, causing the temperature to drop, while the other side (hot side) will release heat, causing the temperature to rise. The heat dissipation channel 6 is designed to be installed on the outside of the main body 1 of the distribution cabinet. Its purpose is to enable better heat dissipation on the heating side of the thermoelectric cooling module 604, and the heating side of the thermoelectric cooling module 604 will not affect the inside of the main body 1 of the distribution cabinet.

[0050] The bottom of both ends of the channel housing 601 are respectively provided with a second air inlet and a second air outlet. The second air inlet is connected to the first air outlet, and the second air outlet is connected to the first air inlet. The channel housing 601 and the U-shaped air distribution assembly 5 form an annular circulation channel. The channel housing 601 has a first side and a second side arranged in parallel. The first side of the channel housing 601 is provided with a plurality of first recesses 602 at equal intervals, and the second side of the channel housing 601 is provided with a plurality of second recesses 603 at equal intervals. The first recesses 602 and the second recesses 603 are staggered, so that the interior of the channel housing 601 forms a linear channel with a multi-fold line shape. Thermoelectric cooling modules 604 are fixedly connected inside the first recesses 602 and the second recesses 603. The cooling side of the thermoelectric cooling module 604 faces the inside of the first recesses 602 and the second recesses 603, that is, the heating side of the thermoelectric cooling module 604 faces away from the inside of the first recesses 602 and the second recesses 603.

[0051] In one embodiment, the number of fan assemblies 11 is no greater than the number of first recesses 602, and the fan assemblies 11 are installed on the second side of the channel housing 601, and the positions of the fan assemblies 11 correspond to the positions of the first recesses 602. For example, two sets of fan assemblies 11 and two sets of first recesses 602 are provided, and three sets of second recesses 603 are provided.

[0052] When in use, the fan assembly 11 is started, driving the airflow inside the channel housing 601. When the airflow passes through the positions corresponding to the first notch 602 and the second notch 603, the airflow exchanges heat with the cooling side of the thermoelectric cooling module 604 to achieve cooling of the airflow.

[0053] In one embodiment, an anti-backflow component 9 is fixedly connected to the inner side of the U-shaped air distribution assembly 5 and at the corresponding position of the first air inlet 7. The anti-backflow component 9 is in the shape of an inverted "L".

[0054] In one embodiment, the cold air distribution assembly 10 includes: an air duct 1001 and a cold air distribution housing 1002.

[0055] The air duct 1001 can be a flexible pipe or a rigid pipe that can be extended. Generally, the side of the U-shaped air distribution assembly 5 is provided with multiple air outlets. The first end of the air duct 1001 is connected to the air outlet of the U-shaped air distribution assembly 5, and the second end of the air duct 1001 is connected to the cold air distribution housing 1002. The cold air passes through the air duct 1001 and then enters the cold air distribution housing 1002. The cold air distribution housing 1002 has air holes 1002b on one / two sides of the upper and lower surfaces. The air holes 1002b are multiple evenly distributed dense holes. The cold air flows out through the air holes 1002b and blows onto the power distribution components to cool them down. The end of the cold air distribution housing 1002 is fixedly connected to a connecting ear 1002a. The connecting ear 1002a is fixedly installed to the multi-hole mounting bracket 2 by bolts. The specific installation position of the cold air distribution housing 1002 can be adjusted according to actual needs.

[0056] like Figure 3 As shown, four air outlets are provided on the horizontal part at the bottom of the U-shaped air distribution assembly 5. Two of the air outlets are connected to the cold air splitter assembly 10. In order to ensure the proper use of cold air flow, a blocking plate is fixedly installed on the air outlet that is not connected to the air duct 1001 to block the air outlet that is not connected to the air duct 1001.

[0057] In one embodiment, the adjustable airflow channel 12 includes: a first block 1201, a second block 1202, a cover 1205, a pressure block 1206, and a torsion spring 1207.

[0058] The U-shaped air distribution assembly 5 has a rectangular cross-sectional shape. The inner side of the U-shaped air distribution assembly 5 has a third side and a fourth side that are parallel to each other. A first blocking block 1201 is fixedly installed on the third side of the U-shaped air distribution assembly 5. The side of the first blocking block 1201 away from the third side of the U-shaped air distribution assembly 5 has a first inclined surface that slopes upwards. A sliding opening 1203 is provided on the fourth side of the U-shaped air distribution assembly 5. A connecting block 1204 is fixedly connected to the back of a second blocking block 1202. A second inclined surface parallel to the first inclined surface is provided on the front of the second blocking block 1202. The connecting block 1204 slides inside the sliding opening 1203, allowing for slidable adjustment of the position of the second blocking block 1202, thereby adjusting the distance between the first and second inclined surfaces, i.e., adjusting the cross-sectional area of ​​the airflow channel. A cover 1205 is slidably connected to the outer side of the U-shaped air distribution assembly 5. The cover 1205 is used for blocking... The sliding port 1203 is located on the side of the cover 1205, which has a rectangular hole. One end of the connecting block 1204 passes through the rectangular hole and is rotatably mounted on the pressure block 1206 via a rotating shaft. A torsion spring 1207 is sleeved on the rotating shaft. The first end 1207a of the torsion spring 1207 abuts against the inner side of the connecting block 1204, and the second end 1207b of the torsion spring 1207 is stuck on the outer side of the pressure block 1206. Under the action of the torsion spring 1207, the bottom of the pressure block 1206 presses against the cover 1205. The cover 1205 and the U-shaped air distribution assembly 5 press against each other, thereby fixing the cover 1205 and the U-shaped air distribution assembly 5. When it is necessary to adjust the position of the second blocking block 1202, the pressure block 1206 can be lifted from the bottom to overcome the elastic force of the torsion spring 1207. Then the cover 1205 can be slidably adjusted, and the second blocking block 1202 slides up and down with the cover 1205 to adjust its position.

[0059] In one embodiment, the cover 1205 is a C-shaped structure that surrounds three sides, so that the cover 1205 can better cover the sliding opening 1203.

[0060] In one embodiment, a filter-type drying component is provided inside the U-shaped air distribution component 5 and / or inside the cold air distribution component 10. Silica gel desiccant is provided on the screen of the filter-type drying component. Silica gel desiccant has advantages such as high moisture absorption performance, strong stability, reusability, high safety, and good thermal stability.

[0061] In one embodiment, the main body 1 of the power distribution cabinet is provided with a terminal block for supplying power to the thermoelectric cooling module 604 of the heat dissipation channel 6, and the thermoelectric cooling module 604 of the heat dissipation channel 6 is powered by the power supply inside the main body 1 of the power distribution cabinet.

[0062] In one embodiment, the top mounting platform 4 of the main body of the power distribution cabinet is fitted with an outer cover (not shown in the attached figure) by hinges. The heat dissipation channel 6 is located inside the outer cover, which has a mesh structure and serves a protective function.

[0063] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat dissipation device for a high-voltage switchgear, comprising: The inner wall of the main body of the distribution cabinet is fixedly connected to a multi-hole mounting bracket, and the multi-hole mounting bracket is fixedly installed with a horizontal bracket for installing power distribution components by bolts. Its characteristic feature is that the multi-hole mounting bracket and the power distribution component mounting crossbeam divide the interior of the power distribution cabinet body into a power distribution area and a heat dissipation distribution area, with the power distribution area close to the door frame of the power distribution cabinet body; The U-shaped air distribution assembly is fixedly installed on the inner side of the heat dissipation distribution area. The two top ends of the U-shaped air distribution assembly are the first air inlet and the first air outlet, respectively. A first air inlet is opened on the side of the U-shaped air distribution assembly near the first air inlet, and a second air inlet is opened on the side of the U-shaped air distribution assembly near the first air outlet. The top outer side of the main body of the power distribution cabinet has an installation platform, and the heat dissipation channel is fixedly installed on the inner side of the installation platform. The two ends of the heat dissipation channel are respectively connected to the first air inlet and the first air outlet of the U-shaped air distribution assembly. At least one fan assembly is installed on the heat dissipation channel; the adjustable airflow channel is installed near the second air inlet of the U-shaped air distribution assembly. One end of the cold air splitter assembly is connected to the U-shaped air distribution assembly and is located between the adjustable airflow channel and the first air inlet. The air outlet of the cold air splitter assembly is located in the power distribution area. The heat dissipation channel includes: a second air inlet and a second air outlet respectively provided at the bottom of both ends of the channel housing; the second air inlet is connected to the first air outlet, and the second air outlet is connected to the first air inlet; the channel housing has a first side and a second side arranged in parallel; the first side of the channel housing has a plurality of first recesses equidistantly provided, and the second side of the channel housing has a plurality of second recesses equidistantly provided, with the first recesses and second recesses being staggered from each other; a thermoelectric cooling module is fixedly connected inside the first recess and the second recess, with the cooling side of the thermoelectric cooling module facing the inside of the first recess and the second recess; The adjustable airflow channel includes: a U-shaped air distribution assembly with a rectangular cross-section, the inner side of the U-shaped air distribution assembly having a third side and a fourth side that are parallel to each other, a first block fixedly installed on the third side of the U-shaped air distribution assembly, the side of the first block away from the third side of the U-shaped air distribution assembly having a first inclined surface that slopes upward; a sliding port is opened on the fourth side of the U-shaped air distribution assembly, a connecting block is fixedly connected to the back of the second block, a second inclined surface parallel to the first inclined surface is opened on the front of the second block, and the connecting block slides inside the sliding port; a cover is slidably connected to the outer side of the U-shaped air distribution assembly, a rectangular hole is opened on the side of the cover, one end of the connecting block passes through the rectangular hole and is rotatably mounted with a pressure block through a rotating shaft, a torsion spring is sleeved on the rotating shaft, the first end (1207a) of the torsion spring abuts against the inner side of the connecting block, and the second end (1207b) of the torsion spring is stuck on the outer side of the pressure block.

2. The high-voltage switchgear heat dissipation device according to claim 1, characterized in that: The number of fan assemblies is no greater than the number of first recesses. The fan assemblies are installed on the second side of the channel housing, and the positions of the fan assemblies correspond to the positions of the first recesses.

3. The high-voltage switchgear heat dissipation device according to claim 1, characterized in that: An anti-backflow component is fixedly connected to the inside of the U-shaped air distribution assembly and at the corresponding position of the first air inlet. The anti-backflow component is in the shape of an inverted "L".

4. The high-voltage distribution cabinet heat dissipation device according to claim 1, characterized in that, The air distribution assembly includes: a U-shaped air distribution assembly with multiple air outlets on its side; the first end of the air duct is connected to the air outlet of the U-shaped air distribution assembly; a connecting lug (1002a) is fixedly connected to the end of the air distribution housing; the connecting lug (1002a) is fixedly installed to the multi-hole mounting bracket by bolts; air holes (1002b) are opened on one / both sides of the upper and lower surfaces of the air distribution housing; the second end of the air duct is connected to the air distribution housing; and a blocking plate is fixedly installed on the air outlets not connected to the air duct.

5. The high-voltage switchgear heat dissipation device according to claim 1, characterized in that: The enclosure is a C-shaped structure that surrounds three sides.

6. The high-voltage switchgear heat dissipation device according to claim 1, characterized in that: The U-shaped air distribution assembly and / or the cold air distribution assembly are equipped with a filter-type drying assembly, and the filter-type drying assembly has silica gel desiccant on its screen.

7. The high-voltage switchgear heat dissipation device according to claim 1, characterized in that: The main body of the distribution cabinet has terminals inside for supplying power to the thermoelectric cooling module of the heat dissipation channel.

8. The heat dissipation device for high-voltage distribution cabinets according to claim 1, characterized in that: The top mounting platform of the main body of the power distribution cabinet is fitted with an outer cover by hinges, and the heat dissipation channel is located inside the outer cover.

Images