Power electrical cabinet with heat dissipation function

Abstract

The invention relates to the technical field of electric power electrical cabinets, in particular to an electric power electrical cabinet with a heat dissipation function, which comprises an electric power electrical cabinet, a mounting seat is fixedly arranged at the bottom of the electric power electrical cabinet, an embedded cooling pipe is fixedly connected to the bottom of the mounting seat in a penetrating manner, and an adjusting ring seat is rotatably connected to the mounting seat. An air guide pipe is fixedly connected to the adjusting ring seat in a penetrating manner, an anti-blocking mechanism is rotatably connected to the inner wall of the air guide pipe, an exhaust pipe is fixedly connected to the top end of the power electrical cabinet in a penetrating manner, and an auxiliary driving mechanism is rotatably connected to the exhaust pipe. It is ensured that the heat dissipation process can still run efficiently in a high-temperature environment, the negative influence of high-temperature weather on a heat dissipation system is avoided, meanwhile, spiral metal plates are arranged on the inner side and the outer side of the pre-buried cooling pipe, a higher convection effect is formed, and the air flowing efficiency and the heat exchange capacity are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power electrical cabinets, and in particular to a power electrical cabinet with a heat dissipation function. BACKGROUND

[0002] A power electrical cabinet with a heat dissipation function is a housing for electrical equipment designed to protect electrical equipment from overheating damage and ensure that electrical equipment can operate at an optimal working temperature. The heat dissipation function is a core part of the design of a power electrical cabinet, especially in high-load or high-temperature environments, where heat dissipation is particularly important. In electrical equipment, power electronic components such as frequency converters, rectifiers, and power semiconductors are widely used, and these components generate a large amount of heat during operation, placing higher demands on the heat dissipation system. The manufacturing process of power electronic components directly affects their performance and heat dissipation capacity. For example, power semiconductor components, due to their high-speed switching characteristics and high power density, often generate a large amount of heat, and if there is no effective heat dissipation measure, it may cause the components to overheat, affecting their reliability and lifespan. Therefore, the design of a power electrical cabinet must take into account the heat dissipation needs of power electronic components, and reasonably configure the heat dissipation system, such as using air cooling, liquid cooling, heat pipes, etc. to ensure that power electronic components can work within a safe and stable temperature range, prolong the service life of the equipment and improve the operating efficiency.

[0003] The prior art document with publication number CN214899542U provides an outdoor electrical cabinet with temperature regulation and protection function, which can prevent rainwater from entering the interior of the electrical cabinet, causing damage to the electronic equipment inside the electrical cabinet; it can also adjust the heat dissipation according to the temperature inside the electrical cabinet, avoiding the high-load operation of electronic equipment under low or high temperature conditions, which may cause damage to the electronic equipment; it can also extinguish fires in the event of an accidental electrical cabinet fire.

[0004] In the use of the prior art, the external air is sucked into the electrical cabinet through the rotation of the fan blades for heat dissipation, but since the prior art does not facilitate the cooling of the external air sucked in, the temperature of the air sucked in will also be high when the weather temperature is high, which cannot effectively remove the heat in the cabinet, resulting in poor heat dissipation effect.

[0005] In summary, in the prior art, there is a lack of technology for cooling the external air sucked in. SUMMARY

[0006] The purpose of the present application is to solve the shortcomings in the background art and provide a power electrical cabinet with a heat dissipation function.

[0007] In order to achieve the above object, the technical scheme adopted by the present application is: a power electrical cabinet with heat dissipation function, comprising a power electrical cabinet, a mounting seat is fixedly arranged at the bottom of the power electrical cabinet, a pre-buried cooling pipe is fixedly and penetratingly connected at the bottom of the mounting seat, an adjusting ring seat is rotatably connected on the mounting seat, an air guide pipe is fixedly and penetratingly connected on the adjusting ring seat, a anti-blocking mechanism is rotatably connected on the inner wall of the air guide pipe, an exhaust pipe is fixedly and penetratingly connected at the top end of the power electrical cabinet, and an auxiliary driving mechanism is rotatably connected on the exhaust pipe.

[0008] Preferably, a gas guide cavity is formed in the inner wall of the mounting seat, a motor A is fixedly connected on the inner wall of the mounting seat, and an adjusting wheel is fixedly connected at the output end of the motor A.

[0009] Preferably, one end of the pre-buried cooling pipe is in communication with the inner wall of the mounting seat, the other end of the pre-buried cooling pipe is in communication with the power electrical cabinet, and helical metal plates are fixedly connected on both sides of the pre-buried cooling pipe.

[0010] Preferably, an annular gear rack is fixedly connected on one end of the adjusting ring seat located in the mounting seat, and the annular gear rack is in meshing transmission with the adjusting wheel.

[0011] Preferably, a wind gathering cover is fixedly connected at the top end of the air guide pipe, a filter pipe is fixedly connected on the inner wall of the top end of the air guide pipe, a guide rod is fixedly connected on the inner wall of the filter pipe, and a helical groove is formed on the outer wall of the guide rod.

[0012] Preferably, the anti-blocking mechanism comprises a connecting rod set, one end of the connecting rod set is rotatably connected with the inner wall of the air guide pipe, a gear is fixedly connected on the end of the connecting rod set connected with the air guide pipe, a transmission gear rack is in meshing transmission on one side of the gear, the transmission gear rack is in penetrating sliding fit with the inner wall of the air guide pipe, and a contact roller is rotatably connected at the bottom end of the transmission gear rack.

[0013] Preferably, a sliding frame is rotatably connected on the other end of the connecting rod set, the other end of the sliding frame is in penetrating sliding fit with the filter pipe, a scraper is fixedly connected on one end of the sliding frame located in the filter pipe, the scraper is in sliding fit with the inner wall of the filter pipe, a guide sleeve is penetratingly and rotatably connected in the middle of the scraper, the inner wall of the guide sleeve is in sliding fit with the inner wall of the helical groove, a brush ring is fixedly connected on the outer wall of the guide sleeve, the brush ring is in frictional contact with the filter pipe, and a tension spring is fixedly connected between the sliding frame and the inner wall of the air guide pipe.

[0014] Preferably, the exhaust pipe inner wall is fixedly connected with a motor B, the output end of the motor B is fixedly connected with a transmission wheel, the exhaust pipe inner wall is fixedly connected with an electric push rod, the output end of the electric push rod is fixedly connected with a sliding seat, a gear shaft is rotatably connected through the middle of the sliding seat, the bottom end of the gear shaft is in meshing transmission with the transmission wheel, the middle of the gear shaft is fixedly connected with a fan blade, and the outer wall of the exhaust pipe is fixedly connected with a plurality of raised blocks which are in sliding contact with the contact rollers.

[0015] Preferably, the auxiliary driving mechanism comprises a rotating seat which is rotatably connected with the outer wall of the exhaust pipe, a dust screen pipe is fixedly connected to the outer side of the upper end of the rotating seat, a rain cover is fixedly connected to the top end of the dust screen pipe, a rotating shaft is rotatably connected through the upper end of the rain cover, the bottom end of the rotating shaft is fixedly connected with a driving wheel, the top end of the gear shaft is in meshing transmission with the driving wheel, and the top end of the rotating shaft passes through the air guide pipe and is fixedly connected with an impeller.

[0016] Compared with the prior art, the present application has the following advantages:

[0017] 1. By arranging the pre-buried cooling pipe below the power electrical cabinet, when injecting external air into the power electrical cabinet to achieve heat dissipation, the underground temperature is utilized to ensure that the heat dissipation process can still operate efficiently in a high-temperature environment, avoiding the negative impact of high-temperature weather on the heat dissipation system. Meanwhile, spiral metal plates are arranged on both the inner and outer sides of the pre-buried cooling pipe, which not only increases the heat dissipation area, but also increases the rotational effect of the airflow, which helps to form a stronger convection effect and improve the flow efficiency and heat exchange capacity of the air.

[0018] 2. By arranging the adjusting ring seat and the wind collecting cover at the end of the air guide pipe, the wind collecting cover can automatically collect external wind into the pre-buried cooling pipe according to the wind direction to dissipate heat from the power electrical cabinet. This does not require the use of electrically driven mechanical equipment, which not only improves the heat dissipation efficiency, but also reduces the dependence on external energy, having the advantages of energy saving, environmental protection, and automatic adjustment.

[0019] 3. By arranging the auxiliary driving mechanism, when the external natural wind can drive the impeller, the fan blades driven by the impeller can enhance the exhaust efficiency and accelerate the airflow, which helps to improve the ventilation effect of the entire system. Meanwhile, by arranging the anti-blocking mechanism, the filter pipe in the air guide pipe can be automatically cleaned when the air guide pipe is turned, avoiding the obstruction of air flow, thereby improving the efficiency of external air entering the system, ensuring smooth air flow, and more quickly and efficiently completing the exhaust process, which optimizes the performance of the overall ventilation system. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1It is a whole structure schematic diagram of the power electrical cabinet with heat dissipation function of the application;

[0021] Figure 2 It is a mounting seat structure sectional view schematic diagram of the power electrical cabinet with heat dissipation function of the application;

[0022] Figure 3 It is a pre-buried cooling pipe structure schematic diagram of the power electrical cabinet with heat dissipation function of the application;

[0023] Figure 4 It is an adjusting ring seat structure schematic diagram of the power electrical cabinet with heat dissipation function of the application;

[0024] Figure 5 It is a partial sectional view schematic diagram of the air guide pipe and other structures of the power electrical cabinet with heat dissipation function of the application;

[0025] Figure 6 It is a schematic diagram of the anti-blocking mechanism structure of the power electrical cabinet with heat dissipation function of the application;

[0026] Figure 7 It is a sectional view schematic diagram of the exhaust pipe and other structures of the power electrical cabinet with heat dissipation function of the application;

[0027] Figure 8 It is a partial sectional view schematic diagram of the auxiliary driving mechanism structure of the power electrical cabinet with heat dissipation function of the application.

[0028] In the figure, 1 is a power electrical cabinet, 2 is a mounting seat, 3 is a pre-buried cooling pipe, 4 is an adjusting ring seat, 5 is an air guide pipe, 6 is an anti-blocking mechanism, 7 is an exhaust pipe, 8 is an auxiliary driving mechanism, 201 is a gas guide cavity, 202 is a motor A, 203 is an adjusting wheel, 301 is a spiral metal plate, 401 is an annular rack, 501 is a wind gathering cover, 502 is a filter pipe, 503 is a guide rod, 504 is a spiral groove, 601 is a connecting rod set, 602 is a gear, 603 is a transmission rack, 604 is a contact roller, 605 is a sliding frame, 606 is a scraper, 607 is a guide sleeve, 608 is a brush ring, 609 is a tension spring, 701 is a motor B, 702 is a transmission wheel, 703 is an electric push rod, 704 is a sliding seat, 705 is a gear shaft, 706 is a fan blade, 707 is a raised block, 801 is a rotating seat, 802 is a dustproof mesh pipe, 803 is a rain cover, 804 is a rotating shaft, 805 is a driving wheel, and 806 is an impeller. DETAILED DESCRIPTION

[0029] The following description is used to disclose the application so that those skilled in the art can implement the application. The preferred embodiments in the following description are only as examples, and other obvious modifications can be thought of by those skilled in the art.

[0030] As Figures 1-8The power cabinet shown includes a power cabinet 1, a mounting base 2 fixedly installed at the bottom of the power cabinet 1, a pre-embedded cooling pipe 3 fixedly connected through the bottom of the mounting base 2, an adjusting ring seat 4 rotatably connected to the mounting base 2, an air guide pipe 5 fixedly connected through the adjusting ring seat 4, an anti-blocking mechanism 6 rotatably connected to the inner wall of the air guide pipe 5, an exhaust pipe 7 fixedly connected through the top of the power cabinet 1, and an auxiliary drive mechanism 8 rotatably connected to the exhaust pipe 7.

[0031] like Figure 2 As shown, an air guide cavity 201 is provided on the inner wall of the mounting base 2. A motor A202 is fixedly connected to the inner wall of the mounting base 2, and an adjusting wheel 203 is fixedly connected to the output end of the motor A202. The motor A202 drives the connected adjusting wheel 203 to rotate, so that the adjusting wheel 203 can drive the adjusting ring seat 4 connected to the ring rack 401 to rotate. At this time, the air guide duct 5 will rotate, so that the wind concentrator 501 is aligned with the wind direction.

[0032] like Figure 3 As shown, one end of the pre-embedded cooling pipe 3 is connected to the inner wall of the mounting base 2, and the other end of the pre-embedded cooling pipe 3 is connected to the inside of the power cabinet 1. Spiral metal plates 301 are fixedly connected to both the inner and outer sides of the pre-embedded cooling pipe 3.

[0033] By installing a pre-embedded cooling pipe 3 below the electrical cabinet 1, when external air is injected into the electrical cabinet 1 to dissipate heat, the underground temperature is utilized to ensure that the heat dissipation process can still operate efficiently in high-temperature environments, avoiding the negative impact of high-temperature weather on the heat dissipation system. At the same time, spiral metal plates 301 are installed on both the inner and outer sides of the pre-embedded cooling pipe 3, which can increase the heat dissipation area. In addition, the internal spiral metal plates 301 increase the rotation effect of airflow, which helps to form a stronger convection effect, improve the air flow efficiency and heat exchange capacity.

[0034] like Figure 4 As shown, an annular rack 401 is fixedly connected to one end of the adjusting ring seat 4 located inside the mounting base 2. The annular rack 401 is meshed with the adjusting wheel 203 for transmission.

[0035] like Figure 5 As shown, a wind-gathering hood 501 is fixedly connected to the top of the air duct 5, a filter tube 502 is fixedly connected to the inner wall of the top of the air duct 5, a guide rod 503 is fixedly connected to the inner wall of the filter tube 502, and a spiral groove 504 is formed on the outer wall of the guide rod 503. An ultrasonic wind direction sensor is installed on the air duct 5 to calculate the wind speed and wind direction using the propagation time of the ultrasonic signal.

[0036] like Figure 6As shown, the anti-blocking mechanism 6 includes a linkage 601, one end of which is rotatably connected to the inner wall of the air duct 5, and the end of the linkage 601 connected to the air duct 5 is fixedly connected with a gear 602, one side of the gear 602 is meshingly and drivingly provided with a transmission rack 603, the transmission rack 603 is slidingly and penetratingly arranged on the inner wall of the air duct 5, and the bottom end of the transmission rack 603 is rotatably connected with a contact roller 604. The contact roller 604 can effectively reduce the friction when in contact.

[0037] The other end of the linkage 601 is rotatably connected with a sliding frame 605, the other end of the sliding frame 605 is slidingly and penetratingly arranged on the filter pipe 502, one end of the sliding frame 605 located in the filter pipe 502 is fixedly connected with a scraper 606, the outer wall of the scraper 606 is slidingly arranged on the inner wall of the filter pipe 502, a guide sleeve 607 is penetratingly and rotatably arranged in the middle of the scraper 606, the inner wall of the guide sleeve 607 is slidingly arranged on the inner wall of the spiral groove 504, a brush ring 608 is fixedly connected to the outer wall of the guide sleeve 607, the brush ring 608 is frictionally arranged on the filter pipe 502, and a tension spring 609 is fixedly connected between the sliding frame 605 and the inner wall of the air duct 5. The tension spring 609 realizes the automatic reset of the sliding frame 605. When the contact roller 604 contacts the raised block 707, the contact roller 604 drives the connected transmission rack 603 to move upwards, at this time, the transmission rack 603 drives the linkage 601 connected with the gear 602 to rotate, so that the linkage 601 pushes the scraper 606 connected with the sliding frame 605 to move, and at the same time, the spiral groove 504 opened on the guide rod 503 in the filter pipe 502 drives the guide sleeve 607 to rotate, at this time, the guide sleeve 607 drives the connected brush ring 608 to rotate, and the inner wall of the filter pipe 502 is cleaned.

[0038] As shown in the drawings, Figure 7 The inner wall of the exhaust pipe 7 is fixedly connected with a motor B701, the output end of the motor B701 is fixedly connected with a transmission wheel 702, the inner wall of the exhaust pipe 7 is fixedly connected with an electric push rod 703, the output end of the electric push rod 703 is fixedly connected with a sliding seat 704, a gear shaft 705 is penetratingly and rotatably arranged in the middle of the sliding seat 704, the bottom end of the gear shaft 705 is meshingly and drivingly arranged with the transmission wheel 702, a fan blade 706 is fixedly connected to the middle of the gear shaft 705, a plurality of raised blocks 707 are fixedly connected to the outer wall of the exhaust pipe 7, and the raised blocks 707 are slidingly arranged on the contact roller 604. The electric push rod 703 drives the connected sliding seat 704 to move downwards, so that the top end of the gear shaft 705 on the sliding seat 704 is separated from the meshing of the driving wheel 805, the bottom end of the gear shaft 705 is meshed with the transmission wheel 702, then the motor B701 drives the transmission wheel 702 to rotate, thereby driving the fan blade 706 to rotate.

[0039] As shown in the drawings, Figure 8As shown, the auxiliary drive mechanism 8 includes a rotating seat 801, which is rotatably connected to the outer wall of the exhaust pipe 7. A dust screen pipe 802 is fixedly connected to the outer side of the upper end of the rotating seat 801. A rain cover 803 is fixedly connected to the top end of the dust screen pipe 802. A rotating shaft 804 is rotatably connected to the rain cover 803. A drive wheel 805 is fixedly connected to the bottom end of the rotating shaft 804. The drive wheel 805 is in meshing transmission with the top end of the gear shaft 705. The rotating shaft 804 penetrates the air guide pipe 5 and is fixedly connected to an impeller 806. The impeller 806 can drive the drive wheel 805 connected thereto to rotate, so that the drive wheel 805 can drive the fan blade 706 connected to the gear shaft 705 to rotate. The dust screen pipe 802 can prevent dust in the external air from entering the power electrical cabinet 1.

[0040] Working principle: during the use of the power electrical cabinet 1, the wind direction is monitored by the ultrasonic wind direction sensor on the air guide pipe 5, and then the motor A 202 drives the connected adjusting wheel 203 to rotate, so that the adjusting wheel 203 can drive the adjusting ring seat 4 connected to the annular rack 401 to rotate, which drives the air guide pipe 5 to rotate, so that the wind collector 501 is aligned with the wind direction. At this time, the external natural wind will be gathered through the wind collector 501 and filtered through the filter pipe 502, then injected into the mounting seat 2 through the air guide pipe 5, and then injected into the pre-buried cooling pipe 3 through the mounting seat 2 for cooling treatment, and then the cooled air is injected into the power electrical cabinet 1 for heat dissipation;

[0041] At the same time, when the air guide pipe 5 rotates, the contact roller 604 will contact the raised block 707, so that the contact roller 604 drives the connected transmission rack 603 to move upwards. At this time, the transmission rack 603 drives the connecting rod set 601 connected to the gear 602 to rotate, so that the connecting rod set 601 drives the scraper 606 connected to the sliding frame 605 to move. At the same time, the spiral groove 504 opened on the guide rod 503 in the filter pipe 502 will make the guide sleeve 607 rotate, and at this time the guide sleeve 607 will drive the connected brush ring 608 to rotate, so as to clean the inner wall of the filter pipe 502;

[0042] At the same time, the external natural wind can drive the impeller 806 to rotate, and at this time the impeller 806 can drive the drive wheel 805 connected to the impeller 806 to rotate, so that the drive wheel 805 can drive the fan blade 706 connected to the gear shaft 705 to rotate, so that the fan blade 706 can extract the hot air in the power electrical cabinet 1 to the outside, so as to accelerate the air circulation;

[0043] When the outside natural wind is not enough to enter into the electric power electrical cabinet 1, the electric push rod 703 drives the connected sliding seat 704 to move downwards, so that the top end of the gear shaft 705 on the sliding seat 704 is disengaged from the engagement with the driving wheel 805, so that the bottom end of the gear shaft 705 is engaged with the transmission wheel 702, then the motor B 701 drives the transmission wheel 702 to rotate, thereby driving the fan blade 706 to rotate, realizing that the external air is injected into the electric power electrical cabinet 1 after being cooled by the pre-buried cooling pipe 3 to realize heat dissipation.

[0044] It should be noted that in this document, the terms "first" and "second" and the like are used merely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0045] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A power electrical cabinet with heat dissipation function, comprising a power electrical cabinet (1), characterized in that: The bottom of the power electrical cabinet (1) is provided with a mounting seat (2), the bottom of the mounting seat (2) is provided with a pre-buried cooling pipe (3) penetratingly and fixedly connected, the mounting seat (2) is provided with an adjusting ring seat (4) rotatingly connected, the adjusting ring seat (4) is provided with a wind guide pipe (5) penetratingly and fixedly connected, the wind guide pipe (5) is provided with an anti-blocking mechanism (6) rotatingly connected on the inner wall, the top of the power electrical cabinet (1) is provided with an exhaust pipe (7) penetratingly and fixedly connected, and the exhaust pipe (7) is provided with an auxiliary driving mechanism (8) rotatingly connected.

2. The power electrical cabinet with heat dissipation function according to claim 1, characterized in that: The inner wall of the mounting seat (2) is provided with a gas guide cavity (201), and the inner wall of the mounting seat (2) is provided with a motor A (202) fixedly connected.

3. The power electrical cabinet with heat dissipation function according to claim 1, characterized in that: One end of the pre-buried cooling pipe (3) is in communication with the inner wall of the mounting seat (2), the other end of the pre-buried cooling pipe (3) is in communication with the power electrical cabinet (1), and the pre-buried cooling pipe (3) is provided with a spiral metal plate (301) fixedly connected on the inner and outer sides.

4. The power electrical cabinet with heat dissipation function according to claim 2, characterized in that: The adjusting ring seat (4) is fixedly connected with a ring gear (401) at one end in the mounting seat (2), and the ring gear (401) is in meshing transmission with the adjusting wheel (203).

5. The power electrical cabinet with heat dissipation function according to claim 1, characterized in that: The top of the wind guide pipe (5) is provided with a wind gathering cover (501) fixedly connected, the top of the wind guide pipe (5) is provided with a filter pipe (502) fixedly connected on the inner wall, the inner wall of the filter pipe (502) is provided with a guide rod (503) fixedly connected, and the outer wall of the guide rod (503) is provided with a spiral groove (504).

6. The power electrical cabinet with heat dissipation function according to claim 5, characterized in that: The anti-blocking mechanism (6) comprises a connecting rod set (601), one end of the connecting rod set (601) is rotatingly connected with the inner wall of the wind guide pipe (5), the connecting rod set (601) is fixedly connected with a gear (602) at the end connected with the wind guide pipe (5), one side of the gear (602) is in meshing transmission with a transmission rack (603), the transmission rack (603) is penetratingly and slidingly matched with the inner wall of the wind guide pipe (5), and the bottom end of the transmission rack (603) is rotatingly connected with a contact roller (604).

7. The power electrical cabinet with heat dissipation function according to claim 6, characterized in that: The other end of the connecting rod set (601) is rotatingly connected with a sliding frame (605), the other end of the sliding frame (605) is penetratingly and slidingly matched with the filter pipe (502), one end of the sliding frame (605) in the filter pipe (502) is fixedly connected with a scraper (606), the outer wall of the scraper (606) is slidingly matched with the inner wall of the filter pipe (502), the middle part of the scraper (606) is penetratingly and rotatingly connected with a guide sleeve (607), the inner wall of the guide sleeve (607) is slidingly matched with the inner wall of the spiral groove (504), the outer wall of the guide sleeve (607) is fixedly connected with a brush ring (608), the brush ring (608) is frictionally connected with the filter pipe (502), and the sliding frame (605) and the inner wall of the wind guide pipe (5) are fixedly connected with a tension spring (609).

8. The power electrical cabinet with heat dissipation function according to claim 7, characterized in that: The inner wall of the exhaust pipe (7) is fixedly connected with a motor B (701), the output end of the motor B (701) is fixedly connected with a transmission wheel (702), the inner wall of the exhaust pipe (7) is fixedly connected with an electric push rod (703), the output end of the electric push rod (703) is fixedly connected with a sliding seat (704), the middle part of the sliding seat (704) is rotatably connected with a gear shaft (705), the bottom end of the gear shaft (705) is in meshing transmission with the transmission wheel (702), the middle part of the gear shaft (705) is fixedly connected with a fan blade (706), the outer wall of the exhaust pipe (7) is fixedly connected with a plurality of raised blocks (707), and the raised blocks (707) are in sliding contact with the contact rollers (604).

9. The power electrical cabinet with heat dissipation function according to claim 8, characterized in that: The auxiliary driving mechanism (8) comprises a rotating seat (801), the rotating seat (801) is rotatably connected with the outer wall of the exhaust pipe (7), the outer side of the upper end of the rotating seat (801) is fixedly connected with a dust screen pipe (802), the top end of the dust screen pipe (802) is fixedly connected with a rain cover (803), the rain cover (803) is rotatably connected with a rotating shaft (804), the bottom end of the rotating shaft (804) is fixedly connected with a driving wheel (805), the driving wheel (805) is in meshing transmission with the top end of the gear shaft (705), the rotating shaft (804) penetrates through the air guide pipe (5) and is fixedly connected with an impeller (806).

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