A heat dissipation structure for a box-type step-up transformer

Abstract

This utility model discloses a heat dissipation structure for a box-type step-up transformer, including a heat dissipation structure body installed on the box-type step-up transformer. Multiple downwardly inclined heat dissipation holes are formed on the inner wall of the box-type step-up transformer, and stainless steel filter screens adapted to the multiple heat dissipation holes are fixedly installed on the outer side of the box-type step-up transformer. This utility model, through a series of structures, facilitates single-drive, two-point synchronous air blowing for heat dissipation. Compared to existing single-fan applications, it improves the air blowing heat dissipation effect and eliminates the need to increase the number of fans, avoiding the significant increase in energy consumption caused by increasing the number of fans. It also facilitates automatic back-blowing cleaning and unblocking of the two circular stainless steel filter plates at regular intervals, eliminating the need for manual disassembly and cleaning by personnel periodically. Furthermore, it prevents the accumulation of large amounts of impurities at the bottom from affecting the air intake and air blowing heat dissipation, improving the convenience of cleaning and the stability of ventilation and heat dissipation.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation technology for box-type step-up transformers, specifically a heat dissipation structure for a box-type step-up transformer. Background Technology

[0002] With the continuous development of the power industry, box-type transformers are being used more and more widely. Although dry-type transformers are simpler in structure and easier to maintain than oil-immersed transformers, they have relatively higher requirements for the environment, especially box-type transformers, which have poor overall heat dissipation. Under high load in summer, the internal temperature of the equipment is high, which can easily cause abnormal high temperature, reduce the service life of the equipment, and seriously damage the equipment.

[0003] Existing box-type step-up transformers dissipate heat by installing fans and temperature control devices on the outside to blow air into the interior, and by using multiple louvers or ventilation holes on the outside to expel hot air. A filter is installed at the air inlet to filter particulate impurities from the incoming air to ensure safe operation. However, these methods have the following shortcomings:

[0004] 1. The single-fan cooling system has poor heat dissipation effect, and simply increasing the number of fans will undoubtedly greatly increase energy consumption, making it difficult to meet the heat dissipation requirements of the box-type step-up transformer; 2. There is no automatic cleaning and unblocking mechanism for the air intake filter, and the outside of the filter is gradually blocked by particulate impurities, which affects the heat dissipation effect and reduces the stability of long-term heat dissipation application; In view of this, this application proposes a heat dissipation structure for the box-type step-up transformer to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a heat dissipation structure for a box-type step-up transformer to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat dissipation structure for a box-type step-up transformer, comprising a heat dissipation structure body installed on the box-type step-up transformer, wherein a plurality of downwardly inclined heat dissipation holes are provided on the inner wall of the box-type step-up transformer, and a stainless steel filter screen adapted to the plurality of heat dissipation holes is fixedly installed on the outer side of the box-type step-up transformer.

[0007] The heat dissipation structure body includes:

[0008] The fixing plate is embedded and fixed to the top right side of the box-type step-up transformer;

[0009] The L-shaped air inlet pipe consists of two sets, both of which are embedded and fixed on the right side of the fixing plate and connected to the inside of the box-type step-up transformer. The bottom of each L-shaped air inlet pipe is integrally set as an amplification section, and a circular stainless steel filter plate is rotatably sleeved inside the amplification section of the two L-shaped air inlet pipes.

[0010] The centrifugal impeller consists of two sets, each located within the vertical section of the corresponding L-shaped air inlet pipe;

[0011] The PLC controller is fixedly connected to the right side of the mounting plate;

[0012] The linkage rotary drive assembly is fixedly connected to the top of two L-shaped air inlet pipes and to two circular stainless steel filter plates. Two centrifugal impellers are fixedly sleeved on the linkage rotary drive assembly. A drive motor electrically connected to the PLC controller is installed on the linkage rotary drive assembly. The linkage rotary drive assembly is used to drive the two centrifugal impellers to rotate synchronously when the drive motor starts. The rotation of the two centrifugal impellers is used to draw external gas through the two L-shaped air inlet pipes and the two circular stainless steel filter plates in sequence and blow it into the box-type step-up transformer for heat dissipation, achieving the effect of single-drive two-point synchronous heat dissipation.

[0013] The fixing box has an opening on its right side, which is fixedly connected to the fixing plate.

[0014] The telescopic air guide assembly is connected and installed on the fixed box, and makes movable contact with the left end of the front L-shaped air inlet pipe and the left side of the fixed plate, and is electrically connected to the PLC controller. The telescopic air guide assembly is used to move up and down under the control of the PLC controller, and to perform timed alignment or staggering with the left end of the front L-shaped air inlet pipe. When aligned, it is used to guide the gas supplied by the front L-shaped air inlet pipe into the fixed box, and when staggered, it is used to remove the obstruction so that the gas supplied by the front L-shaped air inlet pipe can be blown into the box-type step-up transformer for cooling.

[0015] The backflush cleaning assembly consists of two sets, each located above the left half of the corresponding circular stainless steel filter plate. Both are embedded and fixed on the left side of the fixed plate and are connected to the inside of the fixed box. The two backflush cleaning assemblies are used to backflush and clean the two rotating circular stainless steel filter plates when gas is supplied into the fixed box.

[0016] Preferably, the linkage rotary drive assembly includes a U-shaped seat, two synchronous pulleys, a synchronous belt, and two rotating shafts. The U-shaped seat is fixedly connected to the top right side of the two L-shaped air inlets. The drive motor is fixedly installed on the top front side of the U-shaped seat. The two rotating shafts are respectively sealed and rotatably embedded in the top inner wall of the corresponding L-shaped air inlets. The bottom ends of the two rotating shafts are respectively fixedly connected to the top center of the corresponding circular stainless steel filter plates. The two centrifugal impellers are respectively fixedly sleeved on the corresponding rotating shafts. The top ends of the two rotating shafts extend into the U-shaped seat and are respectively fixedly connected to the bottom of the corresponding synchronous pulleys. The synchronous belt is connected to the two synchronous pulleys. The bottom end of the output shaft of the drive motor is fixedly connected to the top of the front synchronous pulley.

[0017] Preferably, the telescopic air guide assembly includes a telescopic hose, an air guide cover, and an electric telescopic rod. The telescopic hose is fixedly connected to the front top of the fixed box, and its top end is fixedly connected to the left side of the bottom of the air guide cover. The right side of the air guide cover is in movable contact with the left end of the front L-shaped air inlet pipe and the left side of the fixed plate, and is connected to the front L-shaped air inlet pipe. The electric telescopic rod is fixedly installed on the front left side of the fixed box, with its extended end in the maximum extended state and fixedly installed on the left side of the air guide cover. The electric telescopic rod is electrically connected to the PLC controller.

[0018] Preferably, the backflush cleaning assembly includes a horizontal tube and multiple backflush heads. Both horizontal tubes are embedded and fixed on the right side of the fixing plate. The right end of the horizontal tube is set as a sealing structure. The bottom of the horizontal tube is connected and fixed to the top of the corresponding multiple backflush heads. The backflush heads are located above the left half of the corresponding circular stainless steel filter plate. The left ends of both horizontal tubes are set as a cover-shaped structure and connected to the inside of the fixing box.

[0019] Preferably, a circular perforation is provided on the top inner wall of the L-shaped air intake pipe, and a sealed bearing is fixedly fitted inside the circular perforation. The inner ring of the sealed bearing is fixedly fitted to the outer side of the corresponding rotating shaft.

[0020] Preferably, the top right side and bottom right side of the fixing plate are integrally provided with an outer edge, and two bolt holes are opened on the right side of the outer edge. The right side of the box-type step-up transformer is provided with four threaded grooves, and fixing bolts are screwed into the threaded grooves. The bolt holes are movably sleeved on the corresponding fixing bolts.

[0021] Preferably, a temperature sensor is fixedly connected to the inside of the box-type step-up transformer, and the temperature sensor is electrically connected to the PLC controller.

[0022] Preferably, a breathable filter cloth is bonded and fixed to the bottom of the circular stainless steel filter plate.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. By using a set temperature sensor, PLC controller, two L-shaped air inlet pipes, two centrifugal impellers, two circular stainless steel filter plates, drive motor and linkage rotary drive assembly, it can perform single-drive two-point synchronous air blowing and heat dissipation. Compared with the existing single-fan application method, the air blowing and heat dissipation effect is improved by using a single drive for two-point air blowing and heat dissipation, and there is no need to increase the number of fans, thus avoiding the phenomenon of greatly increasing energy consumption due to increasing the number of fans.

[0025] 2. Through the PLC controller, circular stainless steel filter plate, L-shaped air inlet pipe, telescopic air guide component, fixed box and back-blowing cleaning component, the two circular stainless steel filter plates can be back-blown and cleaned automatically at regular intervals, eliminating the need for personnel to manually disassemble and clean them periodically. It also avoids the accumulation of a large amount of impurities at the bottom, which affects the air intake and heat dissipation, thus improving the convenience of cleaning and the stability of ventilation and heat dissipation.

[0026] In addition, the method of using only the front L-shaped air intake pipe to align and clear the airflow each time ensures that the rear L-shaped air intake pipe continues to blow air and dissipate heat while the airflow is being used, thus guaranteeing uninterrupted operation of the airflow.

[0027] This utility model, through a series of structures, facilitates single-drive, two-point synchronous air blowing and heat dissipation. Compared with the existing single-fan application method, it improves the air blowing and heat dissipation effect, and eliminates the need to increase the number of fans, thus avoiding the phenomenon of greatly increased energy consumption due to increasing the number of fans. It also facilitates the automatic back-blowing cleaning and unblocking of the two circular stainless steel filter plates at regular intervals, eliminating the need for personnel to manually disassemble, clean, and unblock them periodically. Furthermore, it avoids the accumulation of a large amount of impurities at the bottom, which affects the air intake and air blowing heat dissipation, thus improving the convenience of cleaning and unblocking and the stability of ventilation and heat dissipation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the heat dissipation structure of a box-type step-up transformer proposed in this utility model;

[0029] Figure 2 This utility model Figure 1 Enlarged cross-sectional view of part A in the diagram;

[0030] Figure 3 This is a three-dimensional structural diagram of the heat dissipation structure of a box-type step-up transformer proposed in this utility model.

[0031] Figure 4 For the present utility model Figure 3 A schematic diagram of the left-side view structure.

[0032] In the diagram: 100, box-type step-up transformer; 101, heat dissipation hole; 102, stainless steel filter screen; 1, fixing plate; 2, L-shaped air inlet pipe; 201, circular stainless steel filter plate; 202, PLC controller; 3, U-shaped seat; 301, synchronous pulley; 302, synchronous belt; 303, drive motor; 304, rotating shaft; 305, centrifugal impeller; 5, fixing box; 501, telescopic hose; 502, air guide hood; 503, electric telescopic rod; 504, horizontal pipe; 505, backflush pipe head. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] like Figures 1 to 4 As shown, the heat dissipation structure of the box-type step-up transformer proposed in this embodiment includes a heat dissipation structure body installed on the box-type step-up transformer 100. Multiple downwardly inclined heat dissipation holes 101 are opened on the inner wall of the box-type step-up transformer 100. A stainless steel filter screen 102 adapted to the multiple heat dissipation holes 101 is fixedly installed on the outer side of the box-type step-up transformer 100.

[0035] The heat dissipation structure body includes:

[0036] Fixing plate 1 is embedded and fixed on the top right side of box-type step-up transformer 100;

[0037] The L-shaped air inlet pipe 2 consists of two sets, both of which are embedded and fixed on the right side of the fixing plate 1 and connected to the inside of the box-type step-up transformer 100. The bottom of each pipe is integrally set as an amplification section, and a circular stainless steel filter plate 201 is rotatably sleeved inside the amplification section of the two L-shaped air inlet pipes 2.

[0038] Centrifugal impellers 305 consist of two sets, each located within the vertical section of the corresponding L-shaped air inlet pipe 2;

[0039] PLC controller 202 is fixedly connected to the right side of fixed plate 1;

[0040] The linkage rotary drive assembly is fixedly connected to the top of the two L-shaped air inlet pipes 2 and to the two circular stainless steel filter plates 201. The two centrifugal impellers 305 are fixedly sleeved on the linkage rotary drive assembly. The linkage rotary drive assembly is equipped with a drive motor 303 that is electrically connected to the PLC controller 202. The linkage rotary drive assembly is used to drive the two centrifugal impellers 305 to rotate synchronously when the drive motor 303 starts. The rotation of the two centrifugal impellers 305 is used to draw external gas through the two L-shaped air inlet pipes 2 and the two circular stainless steel filter plates 201 in sequence and blow it into the box-type step-up transformer 100 for heat dissipation, thus achieving the effect of single-drive two-point synchronous heat dissipation.

[0041] The fixing box 5 has an opening on its right side and is fixedly connected to the fixing plate 1.

[0042] The telescopic air guide assembly is connected and installed on the fixed box 5, and is in movable contact with the left end of the front L-shaped air inlet pipe 2 and the left side of the fixed plate 1, and is electrically connected to the PLC controller 202. The telescopic air guide assembly is used to move up and down under the control of the PLC controller 202 at timed intervals to align or stagger with the left end of the front L-shaped air inlet pipe 2 at timed intervals. When aligned, it is used to guide the gas supplied by the front L-shaped air inlet pipe 2 into the fixed box 5, and when staggered, it is used to remove the obstruction so that the gas supplied by the front L-shaped air inlet pipe 2 can be blown into the box-type step-up transformer 100 for cooling.

[0043] The backflush cleaning assembly consists of two sets, which are located above the left half of the corresponding circular stainless steel filter plate 201, and are both embedded and fixed on the left side of the fixing plate 1 and are connected to the inside of the fixing box 5. The two backflush cleaning assemblies are used to backflush and clean the two rotating circular stainless steel filter plates 201 when gas is supplied into the fixing box 5.

[0044] In this embodiment, the top right side and bottom right side of the fixing plate 1 are integrally provided with an outer edge. Two bolt holes are opened on the right side of the outer edge. Four threaded grooves are opened on the right side of the box-type step-up transformer 100. The threaded grooves are threaded with fixing bolts. The bolt holes are movably sleeved on the corresponding fixing bolts. The bottom of the circular stainless steel filter plate 201 is bonded and fixed with a breathable filter cloth. The expansion section of the L-shaped air inlet pipe 2 is fixedly sleeved with a first bearing. The inner ring of the first bearing is fixedly sleeved with the outer side of the corresponding circular stainless steel filter plate 201, so as to achieve the effect of rotating and installing the circular stainless steel filter plate 201.

[0045] In this embodiment, a temperature sensor is fixedly connected to the inside of the box-type step-up transformer 100, and the temperature sensor is electrically connected to the PLC controller 202. The temperature sensor is used to monitor the temperature inside the box-type step-up transformer 100, convert it into a standard electrical signal and transmit it to the PLC controller 202. The PLC controller 202 converts the received standard electrical signal into an actual temperature value through analog-to-digital conversion, so that the PLC controller 202 can control the drive motor 303 to start and stop automatically according to the preset heat dissipation temperature range.

[0046] Furthermore, such as Figure 1 , 2As shown in Figure 3, the linkage rotary drive assembly includes a rotary seat 3, two synchronous pulleys 301, a synchronous belt 302, and two rotating shafts 304. The rotary seat 3 is fixedly connected to the top right side of the two L-shaped air inlet pipes 2. The drive motor 303 is fixedly installed on the top front side of the rotary seat 3. The two rotating shafts 304 are respectively sealed and rotatably embedded in the top inner wall of the corresponding L-shaped air inlet pipe 2. The bottom ends of the two rotating shafts 304 are respectively fixedly connected to the top center of the corresponding circular stainless steel filter plate 201. The two centrifugal impellers 305 are respectively fixedly sleeved on the corresponding rotating shafts 304. The top ends of the two rotating shafts 304 extend into the rotary seat 3 and are respectively fixedly connected to the bottom of the corresponding synchronous pulley 301. The synchronous belt 302 is driven and connected to the two synchronous pulleys 301. The bottom end of the output shaft of the drive motor 303 is fixedly connected to the top of the front synchronous pulley 301.

[0047] In this embodiment, a circular perforation is provided on the top inner wall of the L-shaped air intake pipe 2, and a sealed bearing is fixedly fitted inside the circular perforation. The inner ring of the sealed bearing is fixedly fitted to the outer side of the corresponding rotating shaft 304, so as to achieve the effect of sealing and rotating the rotating shaft 304.

[0048] In this embodiment, the synchronous pulley 301, synchronous belt 302, and two rotating shafts 304 are coordinated by the rotary seat 303. The synchronous pulley 301 on the front side is driven to rotate by the drive motor 303. The synchronous pulley 301 on the front side drives the synchronous pulley 301 on the rear side to rotate together via the synchronous belt 302. The synchronous pulleys 301 rotate synchronously and drive the two rotating shafts 304 to rotate synchronously. The two rotating shafts 304 drive the two centrifugal impellers 305 and the two circular stainless steel filter plates 201 to rotate. The rotation of the centrifugal impellers 305 draws external gas through the corresponding L-shaped air inlet pipes 2 and the two circular stainless steel filter plates 201 in sequence, and blows it into the box-type step-up transformer 100 for cooling. The coordination of the two centrifugal impellers 305 and the two L-shaped air inlet pipes 2 achieves the effect of single-drive two-point synchronous air blowing and cooling. Compared with the existing single-fan application method, the air blowing and cooling effect is improved by using a single drive for two-point air blowing and cooling.

[0049] It should be noted that when the centrifugal impeller 305 is rotating, the gas flow direction of the centrifugal impeller 305 is from bottom to top.

[0050] Furthermore, such as Figure 1 and 2As shown, the telescopic air guide assembly includes a telescopic hose 501, an air guide cover 502, and an electric telescopic rod 503. The telescopic hose 501 is connected and fixed to the front top of the fixed box 5. The top end of the telescopic hose 501 is connected and fixed to the bottom left side of the air guide cover 502. The right side of the air guide cover 502 is in contact with the left end of the front L-shaped air inlet pipe 2 and the left side of the fixed plate 1, and is connected to the front L-shaped air inlet pipe 2. The electric telescopic rod 503 is fixedly installed on the front left side of the fixed box 5. The extended end of the electric telescopic rod 503 is in the maximum extended state and is fixedly installed on the left side of the air guide cover 502. The electric telescopic rod 503 is electrically connected to the PLC controller 202.

[0051] In this embodiment, a connecting seat is fixedly connected between the extended end of the electric telescopic rod 503 and the left side of the air guide cover 502;

[0052] In this implementation scheme, the telescopic hose 501, the air guide hood 502, and the electric telescopic rod 503 work together. The PLC controller 202 is pre-set to control the forward and reverse start times of the electric telescopic rod 503, as well as the time interval between these starts, according to the on-site cleaning needs. This interval is preferably set to one minute. The timed cleaning is preferably performed once every two hours in the active state, i.e., one minute after forward start, reverse start is performed, and two hours later, forward start is performed again. When the cleaning time is reached, the PLC controller 202 drives the electric telescopic rod 503 to start forward, causing it to move the air guide hood 502 upwards to align laterally with the L-shaped air inlet pipe 2 on the front side, and stretching the telescopic hose 501. At this time, the L-shaped air inlet pipe on the front side... The gas supplied by pipe 2 is sequentially supplied into the fixed box 5 through the air guide hood 502 and the telescopic hose 501. One minute later, when the electric telescopic rod 503 is started in reverse, the air guide hood 502 is driven to move downward and offset from the front L-shaped air inlet pipe 2, and then blown into the box-type step-up transformer 100 for heat dissipation. Two hours later, the air guide hood 502 is driven to move upward again to align with the air guide, and so on, so as to achieve the effect of automatically aligning or offsetting with the left end of the front L-shaped air inlet pipe 2 at a timed time, thereby achieving the effect of automatically switching to air supply to the fixed box 5 at a timed ...-only timed-only timed-only-only-front-side-L-shaped-inlet-pipe 2 forddling, so that the rear-side-L-shaped-inlet-pipe 2 is still blowing air for heat dissipation, so as to ensure uninterrupted operation of blowing air.

[0053] Furthermore, such as Figure 1 and 2As shown, the backflush cleaning assembly includes a horizontal pipe 504 and multiple backflush nozzles 505. Both horizontal pipes 504 are embedded and fixed on the right side of the fixing plate 1. The right end of the horizontal pipe 504 is set as a sealing structure. The bottom of the horizontal pipe 504 is connected and fixed to the top of the corresponding multiple backflush nozzles 505. The backflush nozzles 505 are located above the left half of the corresponding circular stainless steel filter plate 201. The left ends of both horizontal pipes 504 are set as a cover-shaped structure and connected to the inside of the fixing box 5.

[0054] In this implementation scheme, through the cooperation of horizontal pipes 504 and multiple backflush nozzles 505, when gas is supplied into the fixed box 5, the gas is diverted to the two horizontal pipes 504, and then blown downwards through the multiple backflush nozzles 505 to backflush and clean the two rotating circular stainless steel filter plates 201, ensuring their smooth application. Furthermore, by using the method that the backflush nozzles 505 are all located above the left half of the circular stainless steel filter plates 201, the normal air intake of other large areas is not affected. This achieves the effect of automatically backflushing and cleaning the two circular stainless steel filter plates 201 at regular intervals, eliminating the need for personnel to manually disassemble and clean them periodically. It also avoids the phenomenon of a large amount of impurities accumulating and clogging at the bottom, affecting the air intake and heat dissipation, thus improving the convenience of cleaning and the stability of ventilation and heat dissipation.

[0055] It should be noted that: the PLC controller 202 preferably adopts a Siemens S7-200SMART programmable controller with an integrated analog input module, which can receive the standard electrical signal output by the temperature sensor and convert it into the actual temperature value through the integrated analog-to-digital conversion function; in addition, using the time control function of this programmable controller, the corresponding opening and closing time and interval of the electric telescopic rod 503 can be set by programming to control its start-up at the appropriate time, thereby realizing the time control function of the corresponding steps. The above operations are all conventional applications of the programmable controller; the installation position of the temperature sensor is preferably flexibly installed by personnel according to the heat-prone area inside the box-type step-up transformer 100. The method of flexibly rotating the installation position of the temperature sensor according to the heat-prone area is a basic and well-known technical means in the application of heat dissipation monitoring, and will not be described in detail here.

[0056] Polypropylene filter cloth is preferred for its breathable filter cloth, which has good chemical stability and breathability, high porosity and uniform pore size, and can effectively intercept dust particles in the gas. This material is a common application material in the fields of industrial dust removal and gas filtration, and is widely used in various ventilation systems and dust removal equipment. Specific specifications (such as density and filtration accuracy) can be selected according to the actual working conditions. By conventionally configuring breathable filter cloth and rotating the appropriate specifications according to the application, it is a mature and well-known conventional technical means in this field, and will not be elaborated further.

[0057] In addition, the temperature sensor is electrically connected to the PLC controller 202 via wires. The electric drive motor 303 and the electric telescopic rod 503 are electrically connected to the PLC controller 202 via wires and servo drivers. The servo driver preferably uses a Siemens V90 servo driver, which is a commonly used driver for controlling motors and electric actuators in conjunction with Siemens programmable controllers. This meets the requirements of the programmable controller to directly control the drive motor 303 and the electric telescopic rod 503. This method of establishing an electrical connection controlled by the PLC controller 202 through direct wire connection is a mature and well-known technology for conventional wired control of controllers, and will not be described in detail here.

[0058] Regarding power supply, given that the application site of the box-type step-up transformer is a power supply location with existing mains power supply facilities, the power supply conditions are sufficient and adequate. All electrical components of this device are connected to the mains power on site and connected to the power input interface of each device through conventional power distribution devices such as circuit breakers, contactors, and power modules, as well as flexible wires (not marked in the figure), forming a complete power supply circuit. This power supply scheme is a conventional power distribution method for industrial equipment and is a mature and well-known technical means, which will not be elaborated here.

[0059] The usage method of this embodiment is as follows: When the heat dissipation structure of the box-type step-up transformer is in use, the temperature sensor monitors the internal temperature of the box-type step-up transformer 100, converts it into a standard electrical signal, and transmits it to the PLC controller 202. The PLC controller 202 converts the received standard electrical signal into an actual temperature value through analog-to-digital conversion. The PLC controller 202 controls the drive motor 303 to start and stop automatically according to the preset heat dissipation temperature range. When the drive motor 303 starts, it drives the front synchronous pulley 301 to rotate. The front synchronous pulley 301 drives the rear synchronous pulley 301 to rotate together through the synchronous belt 302. The two synchronous pulleys 301 rotate synchronously and drive the two rotating shafts 304 to rotate synchronously. The two rotating shafts 304 drive the two... The centrifugal impeller 305 and two circular stainless steel filter plates 201 rotate, and external gas is drawn through the corresponding L-shaped air inlet pipe 2 and the two circular stainless steel filter plates 201 in sequence by the rotation of the centrifugal impeller 305. The gas is then blown into the box-type step-up transformer 100 for heat dissipation. The hot air inside is discharged to the outside through multiple heat dissipation holes 101. By using the cooperation of the two centrifugal impellers 305 and the two L-shaped air inlet pipes 2, the effect of single-drive two-point synchronous air blowing and heat dissipation is achieved. Compared with the existing single-fan application method, the air blowing and heat dissipation effect is improved by using a single drive for two-point air blowing and heat dissipation, and there is no need to increase the number of fans, thus avoiding the phenomenon of greatly increased energy consumption due to increasing the number of fans.

[0060] Initially, the air guide hood 502 is in a lower position. The air guide hood 502 in the attached diagram is only a schematic diagram of the raised state. The PLC controller 202 is used to pre-set the forward and reverse start times of the electric telescopic rod 503 according to the on-site cleaning needs, as well as the time interval between forward and reverse starts. This interval is preferably set to one minute. The timed cleaning time is preferably once every two hours in the starting state, that is, one minute after forward start, reverse start is performed, and two hours later, forward start is performed again. When the cleaning time is reached, the PLC controller... The controller 202 drives the electric telescopic rod 503 to start forward, causing it to move the air guide shroud 502 upward to align laterally with the L-shaped air inlet pipe 2 on the front side, and to stretch the telescopic hose 501. At this time, the gas supplied by the L-shaped air inlet pipe 2 on the front side passes through the air guide shroud 502 and the telescopic hose 501 sequentially into the fixed box 5. One minute later, when the controller controls the electric telescopic rod 503 to start in reverse, it drives the air guide shroud 502 to move downward back, offset from the L-shaped air inlet pipe 2 on the front side, and to blow into the box-type step-up transformer 100 for heat dissipation. Two hours later, the air guide shroud is driven again. The air guide 502 moves upward to align with the left end of the front L-shaped air inlet pipe 2, and so on, to achieve the effect of automatically aligning or offsetting with the left end of the front L-shaped air inlet pipe 2 at regular intervals. This achieves the effect of automatically switching to supplying air to the fixed box 5 at regular intervals. Moreover, by using only the front L-shaped air inlet pipe 2 for alignment and air guiding each time, the rear L-shaped air inlet pipe 2 can still perform blowing and heat dissipation work when air is being guided, ensuring uninterrupted operation of the blowing work. When gas is supplied into the fixed box 5, the gas is split into two horizontal pipes 504, and then blown downward through multiple back-blowing pipe heads 505, which circulates between the two vortex pipes. The rotating circular stainless steel filter plate 201 is cleaned and unblocked by backflushing, ensuring its smooth application. The backflushing pipe head 505 is located on the upper left side of the circular stainless steel filter plate 201, which does not affect the normal air intake of other large areas. Combined with timed air supply, it can achieve the effect of automatic backflushing and cleaning of the two circular stainless steel filter plates 201 at regular intervals. There is no need for personnel to manually disassemble and clean them periodically. It also avoids the accumulation of a large amount of impurities at the bottom, which affects the air intake and heat dissipation, thus improving the convenience of cleaning and unblocking and the stability of ventilation and heat dissipation.

[0061] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat dissipation structure for a box-type step-up transformer, comprising a heat dissipation structure body mounted on a box-type step-up transformer (100), characterized in that: The inner wall of the box-type step-up transformer (100) is provided with a plurality of downwardly inclined heat dissipation holes (101), and a stainless steel filter screen (102) adapted to the plurality of heat dissipation holes (101) is fixedly installed on the outer side of the box-type step-up transformer (100). The heat dissipation structure body includes: The fixing plate (1) is embedded and fixed on the top right side of the box-type step-up transformer (100); The L-shaped air inlet pipe (2) consists of two sets, both of which are embedded and fixed on the right side of the fixing plate (1) and connected to the inside of the box-type step-up transformer (100). The bottom of the pipe is integrally set as an amplification section, and a circular stainless steel filter plate (201) is rotatably sleeved inside the amplification section of the two L-shaped air inlet pipes (2). Centrifugal impellers (305) consist of two sets, each located within the vertical section of the corresponding L-shaped air inlet pipe (2); The PLC controller (202) is fixedly connected to the right side of the mounting plate (1); The linkage rotary drive assembly is fixedly connected to the top of the two L-shaped air inlet pipes (2) and fixedly connected to the two circular stainless steel filter plates (201). The two centrifugal impellers (305) are fixedly sleeved on the linkage rotary drive assembly. The linkage rotary drive assembly is equipped with a drive motor (303) that is electrically connected to the PLC controller (202). The fixing box (5) has an opening on its right side and is fixedly connected to the fixing plate (1); The telescopic air guide assembly is connected to the fixed box (5) and is in active contact with the left end of the L-shaped air inlet pipe (2) on the front side and the left side of the fixed plate (1), and is electrically connected to the PLC controller (202); The backflush cleaning assembly consists of two sets, which are located on the upper left side of the corresponding circular stainless steel filter plate (201) and are both embedded and fixed on the left side of the fixing plate (1) and are connected to the inside of the fixing box (5).

2. The heat dissipation structure of a box-type step-up transformer according to claim 1, characterized in that: The linkage rotary drive assembly includes a rotary seat (3), two synchronous pulleys (301), a synchronous belt (302), and two rotating shafts (304). The rotary seat (3) is fixedly connected to the top right side of the two L-shaped air inlet pipes (2). The drive motor (303) is fixedly installed on the top front side of the rotary seat (3). The two rotating shafts (304) are respectively sealed and rotatably embedded on the top inner wall of the corresponding L-shaped air inlet pipe (2). The bottom ends of the two rotating shafts (304) are respectively fixedly connected to the top center of the corresponding circular stainless steel filter plate (201). The two centrifugal impellers (305) are respectively fixedly sleeved on the corresponding rotating shafts (304). The top ends of the two rotating shafts (304) extend into the rotary seat (3) and are respectively fixedly connected to the bottom of the corresponding synchronous pulley (301). The synchronous belt (302) is driven and connected to the two synchronous pulleys (301). The bottom end of the output shaft of the drive motor (303) is fixedly connected to the top of the front synchronous pulley (301).

3. The heat dissipation structure of a box-type step-up transformer according to claim 1, characterized in that: The telescopic air guiding assembly includes a telescopic hose (501), an air guiding cover (502), and an electric telescopic rod (503). The telescopic hose (501) is connected and fixed to the front top of the fixed box (5). The top end of the telescopic hose (501) is connected and fixed to the left bottom of the air guiding cover (502). The right side of the air guiding cover (502) is in contact with the left end of the front L-shaped air inlet pipe (2) and the left side of the fixed plate (1), and is connected to the front L-shaped air inlet pipe (2). The electric telescopic rod (503) is fixedly installed on the front left side of the fixed box (5). The extended end of the electric telescopic rod (503) is extended to the maximum state and fixedly installed on the left side of the air guiding cover (502). The electric telescopic rod (503) is electrically connected to the PLC controller (202).

4. The heat dissipation structure of a box-type step-up transformer according to claim 1, characterized in that: The backflush cleaning assembly includes a horizontal tube (504) and multiple backflush nozzles (505). Two of the horizontal tubes (504) are embedded and fixed on the right side of the fixing plate (1). The right end of the horizontal tube (504) is set as a sealing structure. The bottom of the horizontal tube (504) is connected and fixed to the top of the corresponding multiple backflush nozzles (505). The backflush nozzles (505) are located above the left half of the corresponding circular stainless steel filter plate (201). The left end of both horizontal tubes (504) is set as a cover-shaped structure and connected to the inside of the fixing box (5).

5. The heat dissipation structure of a box-type step-up transformer according to claim 2, characterized in that: A circular perforation is provided on the top inner wall of the L-shaped air intake pipe (2), and a sealed bearing is fixedly fitted inside the circular perforation. The inner ring of the sealed bearing is fixedly fitted to the outer side of the corresponding rotating shaft (304).

6. The heat dissipation structure of a box-type step-up transformer according to claim 1, characterized in that: The top right side and bottom right side of the fixing plate (1) are integrally provided with an outer edge. Two bolt holes are opened on the right side of the outer edge. Four threaded grooves are opened on the right side of the box-type step-up transformer (100). The threaded grooves are threaded with fixing bolts, and the bolt holes are movably sleeved on the corresponding fixing bolts.

7. The heat dissipation structure of a box-type step-up transformer according to claim 1, characterized in that: A temperature sensor is fixedly connected to the inside of the box-type step-up transformer (100), and the temperature sensor is electrically connected to the PLC controller (202).

8. The heat dissipation structure of a box-type step-up transformer according to claim 1, characterized in that: The bottom of the circular stainless steel filter plate (201) is bonded with a breathable filter cloth.

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