Anti-interference phase-shifting rectification dry-type high-capacity transformer

Abstract

The invention relates to the technical field of transformers, in particular to an anti-interference phase-shifting rectification dry-type high-capacity transformer which comprises a cooling channel, an air inlet system, an air outlet system and a compression system. The cooling channel is arranged between the high-voltage coil and the low-voltage coil; the air inlet system is connected with the mounting frame, and when the air inlet system works, low-temperature gas outside the anti-interference shell is sucked in, forms rotational flow and is fed into the cooling channel; the air outlet system is connected with the top of the anti-interference shell, and the compression system is connected with the air outlet system; low-temperature air is extracted from the outside and fed into the space between the high-voltage coil and the low-voltage coil in a rotational flow mode, dead-corner-free heat dissipation is guaranteed, the heat dissipation efficiency can be improved by changing the included angle between the low-temperature air and the horizontal plane during rotational flow along with heat change, heat is recycled for refrigeration, and the heat dissipation efficiency is further improved; the problem that due to heat accumulation in the anti-interference shell, air blown into the position between the high-voltage coil and the low-voltage coil by the draught fan is hot air and is not evenly distributed is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of transformers, and particularly to an anti-interference phase-shifting rectifying dry-type large-capacity transformer. Background Art

[0002] A dry-type transformer is a power transformer that uses air as a cooling medium. Compared with traditional oil-immersed transformers, it has higher safety, lower maintenance costs, is not prone to fires, and is more environmentally friendly. Currently, dry-type radiators are mostly used in industrial, power, and communication fields, especially in places with high requirements for fire safety.

[0003] Due to the need to carry larger currents and loads, the volume and weight of dry-type large-capacity transformers are also larger, and the heat dissipation speed will decrease. When the dry-type transformer overheats, it will lead to a decrease in power supply stability and even overload damage to the equipment itself. Moreover, as the current and load carried by the large-capacity dry-type transformer increase, more losses will occur in the iron core of the transformer, resulting in a rapid increase in heat during the operation of the transformer. At this time, the generated heat cannot be dissipated in time. In response to the above problems, the prior art has proposed a solution. A dry-type transformer with a patent publication number of CN117854883B cools the coil windings by blowing air from four directions using four fanless air outlet covers and a fan, and a temperature measurement module is arranged outside the coil windings. The temperature measurement module is connected to the fan, and the fan speed is changed according to the temperature of the coil windings, thereby improving the safety of the dry-type transformer during high-load operation.

[0004] Although the prior art has solved the problem that dry large-capacity transformers cannot dissipate heat quickly, there are still the following problems: To optimize the heat dissipation effect, a circular gap is usually left between the high-voltage coil winding and the low-voltage coil winding to form a cooling channel, so that the airflow guided by the fan can quickly flow through the coil windings and iron core of the transformer. The cold air enters from the bottom of the cooling channel and is discharged through the top to take out the heat, making full use of the principle of hot air rising to form a natural airflow cycle. As the capacity of the dry large-capacity transformer increases, the electromagnetic field strength of the dry transformer will also increase accordingly. To prevent mutual influence between the electromagnetic field and the electromagnetic fields of other devices, an anti-interference housing is usually added outside the dry transformer. However, due to the shielding effect of the anti-interference housing, the heat generated will accumulate inside the anti-interference housing, and even if some heat dissipation holes are opened, the heat cannot be quickly exchanged with the outside air. When the temperature inside the anti-interference housing is too high, the gas blown by the fan at the bottom of the cooling channel into the cooling channel is still hot air. Since the air flowing through the surfaces of the coil windings and the iron core is hot air, this will cause the coil windings and the iron core to be unable to dissipate heat effectively. In addition, the airflow blown into the cooling channel from the bottom mainly blows in from both sides where the fan is located. At this time, the low-temperature airflow is unevenly distributed in the cooling channel. The diffusion speed of the low-temperature airflow in the cooling channel towards the position where the fan is not installed is slow. Referring to Figure 1 the position of the dashed box in

[0005] In view of the above situation, in order to overcome the above technical problems, the present invention proposes an anti-interference phase-shifting rectifying dry large-capacity transformer. Summary of the Invention

[0006] The present invention provides an anti-interference phase-shifting rectifying dry large-capacity transformer, which solves the problem that the heat accumulation in the anti-interference housing causes the air blown into the space between the high-voltage coil and the low-voltage coil by the fan to be hot air and unevenly distributed, resulting in poor heat dissipation effect and unstable transformer voltage. By extracting low-temperature air from the outside and sending it into the space between the high-voltage coil and the low-voltage coil in a swirling flow manner to ensure heat dissipation without dead angles, and being able to change the angle between the swirling low-temperature air and the horizontal plane according to the heat change, so as to achieve the purpose of quickly flowing out and taking away the heat in the high-temperature state, increasing the contact time in the low-temperature state to fully exchange heat and take away the heat, and setting up a compression system to recycle the heat, using a vortex tube for refrigeration, using the cold air to further cool the air extracted from the outside and blowing it into the cooling channel to improve the heat dissipation efficiency. At the same time, the returned cold air will help the compression system reset and recompress the air, and send the compressed air into the vortex tube for the next refrigeration cycle to ensure that the transformer is at an appropriate working temperature.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An anti-interference phase-shifting rectifying dry large-capacity transformer includes an anti-interference shell, a mounting frame, a high-voltage coil, a low-voltage coil, and an iron core; it also includes a cooling channel, an air inlet system, an air outlet system, and a compression system; the cooling channel is arranged between the high-voltage coil and the low-voltage coil; the air inlet system is connected to the mounting frame, and when the air inlet system works, it pumps the low-temperature gas outside the anti-interference shell and forms a swirl to send it into the cooling channel; the air outlet system is connected to the top of the anti-interference shell, and when the low-temperature air passes through the cooling channel, it absorbs heat and flows into the air outlet system; the compression system is connected to the air outlet system, and when the air outlet system discharges the hot air to the outside of the compression system, the compression system absorbs the heat in the hot air to make the expansion substance inside it expand. When the expansion substance inside the compression system absorbs heat and expands, it compresses the air inside it and discharges it to the air outlet system, and the air discharged from the compression system to the air outlet system is separated into cold air and transported to the position of the air inlet system.

[0009] Preferably, the air inlet system includes a cooling fan, an air inlet channel, and a swirl channel; the cooling fan is connected to the bottom of the mounting frame; the air inlet channel is connected between the cooling fan and the bottom of the anti-interference shell; the swirl channel is connected to the air outlet position of the cooling fan.

[0010] In the above solution, the cooling fan in the air inlet channel extracts low-temperature air from the outside and transports it into the cooling channel, avoiding the air blown by the fan into the cooling channel being the hot air inside the anti-interference shell, further improving the cooling efficiency. And the air flowing out of the cooling fan will enter the swirl channel. At this time, the low-temperature air forms a swirl in the swirl channel and enters the cooling channel, so that the low-temperature air can flow through the high-voltage coil and the low-voltage coil without dead angles, uniformly taking away the heat and avoiding the problem of insufficient local heat dissipation effect.

[0011] Preferably, the swirl channel includes a channel body, a plurality of oblique outlets, and an air outlet adjusting member; the channel body is connected to the cooling fan; the plurality of oblique outlets are opened along the side line direction of the channel body; the air outlet adjusting member is arranged inside the channel body.

[0012] In the above solution, when the low-temperature air from the outside is sent into the swirl channel by the cooling fan and flows out through the inclined outlet, the low-temperature air will form an inclined swirl along the wall surface of the cooling channel. Moreover, the height that the air flow rises per revolution can be controlled by changing the inclination angle of the inclined outlet. And by changing the height that the low-temperature air flow rises per revolution, the flow rate of the gas flowing out of the cooling channel can be changed. When the temperatures of the high-voltage coil and the low-voltage coil are relatively high, the included angle between the inclined outlet and the horizontal plane increases, so that the low-temperature air can flow out of the cooling channel more quickly, thereby taking away heat more rapidly. While when the temperatures of the high-voltage coil and the low-voltage coil are relatively low, the air flow rotates more turns in the cooling channel, increasing the residence time in the cooling channel, so as to better absorb and take out the heat.

[0013] Preferably, the air outlet adjusting member includes a thermal expansion box, an adjusting plate, an adjusting push rod and a return spring; the thermal expansion box is arranged above the channel body; the adjusting plate is arranged in the inclined air outlet, and the adjusting plate and the inclined outlet are connected by a torsion spring; the adjusting push rod is connected to the adjusting plate; the return spring is connected between the thermal expansion box and the adjusting push rod.

[0014] In the above solution, the expansion medium in the thermal expansion box expands when the temperature rises to drive the adjusting push rod to slide. When the adjusting push rod slides, it will drive the adjusting plate to flip, thus changing the included angle between the adjusting plate and the horizontal plane, so that the angle of the inclined outlet changes. And when the temperature drops, the expansion medium in the thermal expansion box will return to its original state, and the return spring will pull the adjusting push rod to drive the adjusting plate to reset, achieving automatic adjustment of the flow of low-temperature air in the cooling channel according to the heat change.

[0015] Preferably, the air outlet system includes an outflow channel, a heating channel, a vortex tube and a cooling tube; the outflow channel is connected to the top of the anti-interference shell; the heating channel is connected to the outflow channel; the vortex tube is connected to the compression system; the cooling tube is connected to the vortex tube.

[0016] In the above solution, the hot air flow flows out of the anti-interference shell through the outflow channel, ensuring that the overall temperature inside the anti-interference shell is within an appropriate range. And through the recycling of heat, it is guided to the external position of the compression system by the heating channel, so that the expansion substance inside the compression system expands after being heated to compress the air inside it. The compressed air enters the vortex tube. Since the vortex tube can separate the compressed air into hot air and cold air, and the temperature of the cold air generated here can reach as low as minus 46 degrees Celsius at the lowest, the separated low-temperature gas is sent to the air inlet channel position to further cool the gas drawn in from the outside, so as to quickly cool the high-voltage coil and the low-voltage coil and ensure their normal operation.

[0017] Preferably, the compression system includes a compression chamber, a compression piston, an air extraction spring, an intake valve, and an exhaust valve; the compression chamber passes through the heating channel; the compression piston is slidably installed in the compression chamber; the air extraction spring is connected between the compression chamber and the compression piston; the intake valve is connected to the compression chamber; the exhaust valve is provided between the compression chamber and the vortex tube.

[0018] In the above solution, the compression system utilizes thermal energy to achieve the compression process, thereby recovering and utilizing heat, preventing the temperature of the environment where the dry-type transformer is located from rising rapidly, and being able to automatically reset after the temperature recovers to perform repeated work for refrigeration, thus helping the high-voltage coil and the low-voltage coil to cool down quickly.

[0019] Preferably, the intake valve is a one-way valve and only allows opening into the compression chamber; the exhaust valve is a one-way valve and only allows opening out of the compression chamber.

[0020] In the above solution, the intake valve and the exhaust valve are set as one-way valves. During the compression process, when the air is compressed to a limited value (within the range where the vortex tube can perform cold and heat separation), the exhaust valve will open towards the vortex tube. When the air in the compression chamber is emptied and the thermal expansion substance cools down, it will restart the air extraction movement. The air extraction spring drives the compression piston to slide back to its original position. At this time, a negative pressure will be generated on the side where the compression piston compresses the air, causing the intake valve to open, enabling it to extract external air and restart the compression activity.

[0021] Preferably, the cooling cold tube includes a connection section, a cooling section, and a return section; the connection section is connected to the vortex tube; the cooling section is sleeved outside the intake channel; the return section is connected to the heating channel.

[0022] In the above solution, through the return of cold air, the returned cold air will enter to help with cooling, enabling the expansion substance in the compression tank to quickly return to the unexpanded state at a low temperature. At this time, if the discharged gas is a low-temperature gas, the temperature at the high-voltage coil and the low-voltage coil has been reduced to an appropriate range. If the discharged gas is a high-temperature gas, the expansion substance in the compression tank will be heated again at this time, thereby restarting the refrigeration cycle to help with rapid cooling.

[0023] The beneficial effects of the present invention are as follows:

[0024] 1. Compared with the existing dry-type large-capacity transformer, the present invention uses an anti-interference shell to ensure that the electromagnetic field of the transformer does not interfere with the electromagnetic field of the external equipment, and solves the adverse effect of the anti-interference shell on the heat dissipation of the transformer. The cooling fan is used to extract air from the outside of the anti-interference shell, and the hot air in the anti-interference shell is discharged to ensure that the temperature in the anti-interference shell is maintained at a suitable working temperature, thereby ensuring the stability of the transformer voltage and avoiding overheating of the transformer and causing excessive load failure; at the same time, a swirl channel is set to allow the low-temperature air to swirl and rise when entering the cooling channel, thereby helping the transformer to dissipate heat without dead angles, evenly taking away the heat, avoiding the problem of inadequate local heat dissipation effect, further improving the heat dissipation effect of the transformer, and ensuring that the transformer can work stably.

[0025] 2. The present invention can control the rising height of the low-temperature airflow per rotation by setting an air outlet adjustment member and adjusting the inclination angle of the oblique outlet, and achieve the purpose of adjusting the speed of gas flowing out of the cooling channel by changing the rising height of the low-temperature airflow. Therefore, when the temperature of the high-pressure and low-pressure coils is high, the angle between the oblique outlet and the horizontal plane increases, and the low-temperature air flows out of the cooling channel faster to quickly take away the heat; when the temperature is low, the airflow rotates more circles in the cooling channel, increasing the residence time for sufficient heat exchange, more effectively absorbing and taking away the heat, and ensuring that the transformer can work stably under different temperature conditions.

[0026] 3. The present invention recycles the exhausted heat and utilizes the thermal expansion materials in the compression chamber to absorb and expand the heat, thereby compressing the air in the compression chamber, discharging the compressed air into the vortex tube, and utilizing the principle of the vortex tube to separate hot air and cold air for refrigeration, and transports the cold air to the air inlet channel to further cool the air drawn in from the outside, thereby helping the transformer to quickly cool down to a suitable temperature and avoiding transformer voltage instability caused by continuous high temperature; and the cold air will reach the heating channel through the reflux section, helping the expansion material in the compression tank to cool down and return to its original state. When the cold air is consumed, the expansion material will absorb heat again to expand and enter the next refrigeration cycle, increasing the refrigeration cycle speed, thereby ensuring that the transformer can maintain an appropriate temperature to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 This is a schematic diagram of a slow heat dissipation position in the prior art;

[0029] Figure 2 is the overall structure diagram of the present invention;

[0030] Figure 3 is the schematic diagram of the air inlet system structure of the present invention;

[0031] Figure 4 is the schematic diagram of the swirl channel structure of the present invention;

[0032] Figure 5 is Figure 4 the enlarged view of the structure at position A in;

[0033] Figure 6 is the pipeline layout diagram of the air outlet system of the present invention;

[0034] Figure 7 is the internal structure diagram of the compression system of the present invention;

[0035] Figure 8 is the diagram of different gas flow directions in the present invention;

[0036] In the figure: 1, anti-interference shell; 2, mounting rack; 3, high-voltage coil; 4, low-voltage coil; 5, iron core; 6, cooling channel; 7, air inlet system; 71, cooling fan; 72, air inlet channel; 73, swirl channel; 731, channel body; 732, inclined outlet; 733, air outlet adjusting part; 7331, thermal expansion box; 7332, adjusting plate; 7333, adjusting push rod; 7334, return spring; 8, air outlet system; 81, outflow channel; 82, heating channel; 83, vortex tube; 84, cooling pipe for temperature reduction; 841, connection section; 842, cooling section; 843, return section; 9, compression system; 91, compression chamber; 92, compression piston; 93, air extraction spring; 94, intake valve; 95, outlet valve. Detailed implementation manners

[0037] In order to better understand the above technical solutions, the above technical solutions will be described in detail below in conjunction with the accompanying drawings of the specification and specific implementation manners.

[0038] Please refer to Figures 1 to 8 , the present invention provides an anti-interference phase-shifting rectifying dry-type large-capacity transformer, and the technical solution is as follows:

[0039] As a specific implementation manner of the present invention, referring to Figure 1 , Figure 2 and Figure 3, An anti-interference phase-shifting rectifying dry large-capacity transformer, comprising an anti-interference shell 1, a mounting frame 2, a high-voltage coil 3, a low-voltage coil 4 and an iron core 5; further comprising a cooling channel 6, an air inlet system 7, an air outlet system 8 and a compression system 9; the cooling channel 6 is arranged between the high-voltage coil 3 and the low-voltage coil 4; the air inlet system 7 is connected to the mounting frame 2, and when the air inlet system 7 works, it pumps the low-temperature gas outside the anti-interference shell 1 and forms a swirl to send it into the cooling channel 6; the air outlet system 8 is connected to the top of the anti-interference shell 1, and when the low-temperature air passes through the cooling channel 6, it absorbs heat and flows into the air outlet system 8; the compression system 9 is connected to the air outlet system 8, when the air outlet system 8 discharges the hot air to the outside of the compression system 9, the compression system 9 absorbs the heat in the hot air to make the expansion substance inside it expand, when the expansion substance inside the compression system 9 absorbs heat and expands, it compresses the air inside it and discharges it to the air outlet system 8, the air discharged from the compression system 9 to the air outlet system 8 is separated into cold air and transported to the position of the air inlet system 7, thereby helping the air sent into the cooling channel 6 by the air inlet system 7 to cool down and improving the heat dissipation efficiency.

[0040] As a specific embodiment of the present invention, refer to Figure 3 , the air inlet system 7 comprises a cooling fan 71, an air inlet channel 72 and a swirl channel 73; the cooling fan 71 is connected to the bottom of the mounting frame 2; the air inlet channel 72 is connected between the cooling fan 71 and the bottom of the anti-interference shell 1; the swirl channel 73 is connected to the air outlet position of the cooling fan 71. Through the air inlet channel 72, the cooling fan 71 extracts low-temperature air from the outside and transports it into the cooling channel 6, avoiding the air blown by the fan into the cooling channel 6 being the hot air inside the anti-interference shell 1, further improving the cooling efficiency, and the air flowing out of the cooling fan 71 will enter the swirl channel 73, at this time the low-temperature air forms a swirl in the swirl channel 73 and enters the cooling channel 6, so that the low-temperature air can flow through the high-voltage coil 3 and the low-voltage coil 4 without dead angles, taking away the heat evenly and avoiding the problem of insufficient local heat dissipation effect.

[0041] As a specific embodiment of the present invention, refer to Figure 4, the swirling channel 73 includes a channel body 731, a plurality of oblique outlets 732 and an air outlet adjusting member 733; the channel body 731 is connected to the cooling fan 71; the plurality of oblique outlets 732 are opened along the edge direction of the channel body 731; the air outlet adjusting member 733 is disposed within the channel body 731. When the low-temperature air from the outside is sent into the swirling channel 73 by the cooling fan 71, it flows out through the oblique outlets 732. At this time, the low-temperature air will form an oblique swirl along the wall surface of the cooling channel 6, and the height of the air flow rising per revolution can be controlled by changing the inclination angle of the oblique outlets 732. Moreover, by changing the height of the low-temperature air flow rising per revolution, the outflow speed of the gas from the cooling channel 6 can be changed. When the temperatures of the high-voltage coil 3 and the low-voltage coil 4 are relatively high, the included angle between the oblique outlets 732 and the horizontal plane increases, so that the low-temperature air can flow out of the cooling channel 6 more quickly, thereby taking away heat more rapidly. While when the temperatures of the high-voltage coil 3 and the low-voltage coil 4 are relatively low, the air flow rotates more turns in the cooling channel 6, increasing the residence time in the cooling channel 6, so as to better absorb heat and carry the heat out.

[0042] As a specific embodiment of the present invention, referring to Figure 5, the air outlet adjusting member 733 includes a thermal expansion box 7331, an adjusting plate 7332, an adjusting push rod 7333 and a return spring 7334; the thermal expansion box 7331 is arranged above the channel body 731; the adjusting plate 7332 is arranged in the inclined seal 732, and the adjusting plate 7332 and the inclined outlet 732 are connected by a torsion spring; the adjusting push rod 7333 is connected to the adjusting plate 7332, and the connection between the two is a movable connection. Under the action of the torsion spring, the adjusting plate 7332 will be pressed against the adjusting push rod 7333; the return spring 7334 is connected between the thermal expansion box 7331 and the adjusting push rod 7333. When the temperature rises, the thermal expansion substance in the thermal expansion box 7331 expands to drive the adjusting push rod 7333 to slide. Here, the thermal expansion substance is placed so that when it expands, the adjusting push rod 7333 can perform a contraction movement, and the return spring 7334 is compressed. When the adjusting push rod 7333 slides, the adjusting plate 7332 will be flipped, thereby changing the angle between the adjusting plate 7332 and the horizontal plane, so that the angle of the inclined outlet 732 changes. When the temperature drops, the expansion medium in the thermal expansion box 7331 will return to its original state, and the return spring 7334 will push the adjusting push rod 7333 to drive the adjusting plate 7332 to reset, achieving automatic adjustment of the flow of low-temperature air in the cooling channel 6 according to the heat change; since a large-capacity transformer will generate a strong electromagnetic field under high-load conditions, when using an electronic temperature measuring element for control, under the action of a strong electromagnetic field, its temperature measuring function may be affected, resulting in abnormal operation. Here, a thermal expansion substance and a pure mechanical structure are used, which is more reliable than using an electronic temperature measuring element to electronically control the angle of the adjusting plate 7332.

[0043] As a specific embodiment of the present invention, refer to Figure 6 and Figure 8, the air outlet system 8 includes an outflow channel 81, a heating channel 82, a vortex tube 83, and a cooling cold tube 84; the outflow channel 81 is connected to the top of the anti-interference shell 1; the heating channel 82 is connected to the outflow channel 81; the vortex tube 83 is connected to the compression system 9; the cooling cold tube 84 is connected to the vortex tube 83. The hot air flows out of the anti-interference shell 1 through the outflow channel 81 to ensure that the overall temperature inside the anti-interference shell 1 is within an appropriate range. And by recycling the heat, it is guided to the external position of the compression system 9 through the heating channel 82, so that the expanding substance inside the compression system 9 expands when heated to compress the air inside it. The compressed air enters the vortex tube 83. Since the vortex tube 83 can separate the compressed air into hot air and cold air, (the compressed gas enters the vortex tube 83 for swirling. There is viscous friction between the high-speed rotating air flow layers. Since the angular velocity of the free vortex is larger closer to the center, there is friction between the air flow layers with different angular velocities; the air flow with the maximum velocity in the central part transfers energy to the outer air flow with a lower angular velocity, resulting in the loss of energy and the reduction of kinetic energy in the central layer part, and the temperature also decreases accordingly, forming a cold air flow) and the lowest temperature of the cold air generated here can reach minus 46 degrees. The separated low-temperature gas is sent to the position of the air inlet channel 72 to further cool the gas drawn in from the outside, so as to quickly cool the high-voltage coil 3 and the low-voltage coil 4 and ensure their normal operation; the hot air finally discharged from the heating channel 82 and the vortex tube 83 can be led out by a pipeline for recycling. On the one hand, it can avoid the increase of the working environment temperature, and on the other hand, it can recycle and utilize the heat energy, playing a role in saving energy.

[0044] As a specific embodiment of the present invention, referring to Figure 6 and Figure 7 , the compression system 9 includes a compression chamber 91, a compression piston 92, an air extraction spring 93, an intake valve 94, and an exhaust valve 95; the compression chamber 91 passes through the heating channel 82; the compression piston 92 is slidably installed in the compression chamber 91; the air extraction spring 93 is connected between the compression chamber 91 and the compression piston 92; the intake valve 94 is connected to the compression chamber 91; the exhaust valve 95 is arranged between the compression chamber 91 and the vortex tube 83. The compression system 9 utilizes heat energy to realize the compression process, thereby recycling the heat, avoiding the rapid increase of the temperature of the environment where the dry-type transformer is located, and being able to automatically reset after the temperature recovers and perform repeated work for refrigeration, so as to help the high-voltage coil 3 and the low-voltage coil 4 to quickly cool down.

[0045] As a specific embodiment of the present invention, referring to Figure 7, the intake valve 94 is a one-way valve and only allows opening into the compression chamber 91; the outlet valve 95 is a one-way valve and only allows opening out of the compression chamber 91. The intake valve 94 and the outlet valve 95 are set as one-way valves. During the compression process, when the air is compressed to a defined value (within the range where the vortex tube 83 can perform cold and heat separation), the outlet valve 95 will open towards the vortex tube 83. When the air in the compression chamber 91 is emptied and the thermally expanding substance cools down, it will restart the air extraction movement. The extraction spring 93 drives the compression piston 92 to slide back to its original position. At this time, a negative pressure will be generated on the side where the compression piston 92 compresses the air, causing the intake valve 94 to open, enabling it to extract external air and restart the compression activity.

[0046] As a specific embodiment of the present invention, referring to Figure 6 , Figure 7 and Figure 8 , the cooling cold tube 84 includes a connection section 841, a cooling section 842, and a return section 843; the connection section 841 is connected to the vortex tube 83; the cooling section 842 is sleeved outside the intake passage 72; the return section 843 is connected to the heating passage 82. Through the return of the cold air, and the returned cold air will enter to help with cooling, enabling the thermally expanding substance in the compression chamber 91 to quickly return to the unexpanded state at a low temperature. And in cooperation with the air intake system 7, at a high temperature state, the low-temperature air can quickly flow through the cooling passage 6, ensuring that the discharged gas has a fast speed but the overall temperature will not be too high at a high temperature state, thereby preventing the expanding substance from being unable to return to its original state. When the thermally expanding substance returns to the unexpanded state, if the discharged gas is a low-temperature gas, the temperatures at the high-voltage coil 3 and the low-voltage coil 4 have been reduced to an appropriate range. If the discharged gas is a high-temperature gas, at this time, the expanding substance in the compression tank will be heated again, thereby restarting the refrigeration cycle to help with rapid cooling.

[0047] Workflow: The cooling fan 71 starts, extracts low-temperature air from the outside and sends it into the swirl channel 73. The swirl channel 73 makes the low-temperature air enter the cooling channel 6 in a swirling form, achieving the purpose of dissipating heat from the high-voltage coil 3 and the low-voltage coil 4 without dead angles. As the temperature changes, the air outlet adjusting member 733 changes the angle between the swirling direction of the low-temperature air and the horizontal plane. When the temperatures of the high-voltage coil 3 and the low-voltage coil 4 are relatively high, the angle between the inclined outlet 732 and the horizontal plane increases, so that the low-temperature air can flow out of the cooling channel 6 more quickly, thereby taking away heat faster. When the temperatures of the high-voltage coil 3 and the low-voltage coil 4 are relatively low, the air flow rotates more circles in the cooling channel 6, increasing the residence time in the cooling channel 6, so as to better absorb heat and take out the heat, thereby improving the heat dissipation effect; The hot air enters the heating channel 82 from the outflow channel 81 to drive the compression system 9 to work. The compression system 9 compresses the gas and sends it into the vortex tube 83. The vortex tube 83 separates the cold air and guides it to the position of the air inlet channel 72 to cool the gas drawn in by the cooling fan 71, further improving the heat dissipation effect and ensuring that the transformer can work normally.

[0048] Specifically, in order to ensure that the air blown into the cooling channel 6 has a relatively low temperature and can dissipate heat from the high-voltage coil 3 and the low-voltage coil 4 without dead angles, the cooling fan 71 starts to extract low-temperature air from the outside and send it into the swirl channel 73. The low-temperature air entering the swirl channel 73 will flow out through the inclined outlet 732. By changing the structure of the inclined outlet 732, the flow direction of the low-temperature air is changed, so that the low-temperature air can form a swirl and enter the cooling channel 6, thereby achieving the purpose of dissipating heat from the high-voltage coil 3 and the low-voltage coil 4 without dead angles;

[0049] In order to further improve the heat dissipation efficiency and ensure that the low-temperature air can fully take away the heat generated by the high-voltage coil 3 and the low-voltage coil 4, the thermal expansion substance in the thermal expansion box 7331 absorbs the heat generated by the high-voltage coil 3 and the low-voltage coil 4 and expands. The expansion of the thermal expansion substance causes the adjusting push rod 7333 to contract into the thermal expansion box 7331. At this time, the adjusting plate 7332 will be pressed by the torsion spring in the direction of the sliding of the adjusting push rod 7333, that is, the angle between the adjusting plate 7332 and the horizontal plane becomes larger, so that the low-temperature air can flow out of the cooling channel 6 more quickly, thereby taking away heat faster; When the temperatures of the high-voltage coil 3 and the low-voltage coil 4 decrease, the thermal expansion substance will return to its original volume. At this time, the return spring 7334 returns from the compressed state. At this time, the adjusting push rod 7333 will be pushed out again, causing the adjusting plate 7332 to turn over and reduce the angle with the horizontal plane. At this time, the low-temperature air will rotate more circles in the cooling channel 6, increasing the residence time in the cooling channel 6, so as to better absorb heat and take out the heat, thereby improving the heat dissipation effect;

[0050] In order to recycle the exhausted hot air and ensure rapid cooling when the temperature of the transformer is too high, when the hot air enters the outflow channel 81, it will enter the heating channel 82, where it will heat the thermally expandable substance in the compression chamber 91. The thermally expandable substance in the compression chamber 91 absorbs heat and expands, compressing the air in the compression chamber 91. When the air is compressed to the limit value, the air outlet valve 95 will be opened, and at this time the compressed gas will flow into the vortex tube 83. Under the action of the special structure of the vortex tube 83, the compressed gas will be separated into hot air and cold air, and the generated cold air can be as low as minus, referring to Figure 8 the direction of the cold air flow in []. The generated cold air flows through the connection section 841 to the cooling section 842, where it will cool the low-temperature gas extracted from the outside by the cooling fan 71 through the air inlet channel 72, reducing its temperature and thus improving the heat dissipation efficiency. The excess cold air flows from the return section 843 into the heating channel 82 to cool the thermally expandable substance in the compression chamber 91. At this time, the thermally expandable substance returns to its original volume, and the compression piston 92 is reset under the action of the air extraction spring 93. The negative pressure generated during the reset process will open the air inlet valve 94 to supplement the compressed and consumed air, and when it absorbs heat again, it can quickly enter the next refrigeration cycle to further improve the heat dissipation effect.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An anti-interference phase-shifting rectifier dry-type large-capacity transformer, comprising an anti-interference shell (1), a mounting frame (2), a high-voltage coil (3), a low-voltage coil (4) and an iron core (5); characterized in that: The invention also comprises a cooling channel (6), an air intake system (7), an air outlet system (8) and a compression system (9); the cooling channel (6) is arranged between the high-voltage coil (3) and the low-voltage coil (4); the air intake system (7) is connected to the mounting frame (2); when the air intake system (7) is in operation, the low-temperature gas outside the anti-interference shell (1) is sucked in and forms a swirl flow and is sent into the cooling channel (6); the air outlet system (8) is connected to the top of the anti-interference shell (1); when the low-temperature air passes through the cooling channel (6), it absorbs heat and flows into the cooling channel (6). to the air outlet system (8); the compression system (9) is connected to the air outlet system (8); when the air outlet system (8) discharges the hot air to the outside of the compression system (9), the compression system (9) absorbs the heat in the hot air to expand the expansion material inside the compression system (9); when the expansion material inside the compression system (9) absorbs the heat and expands, the air inside the compression system (9) is compressed and discharged to the air outlet system (8); the air discharged by the compression system (9) to the air outlet system (8) is separated into cold air, and the separated cold air is transported to the position of the air inlet system (7).

2. The anti-interference phase-shifting rectifier dry-type large-capacity transformer according to claim 1 is characterized in that: The air intake system (7) comprises a cooling fan (71), an air intake channel (72) and a swirl channel (73); the cooling fan (71) is connected to the bottom of the mounting frame (2); the air intake channel (72) is connected between the cooling fan (71) and the bottom of the anti-interference shell (1); and the swirl channel (73) is connected to the air outlet position of the cooling fan (71).

3. The anti-interference phase-shifting rectifier dry-type large-capacity transformer according to claim 2 is characterized in that: The swirl channel (73) comprises a channel body (731), a plurality of oblique outlets (732) and an air outlet adjustment member (733); the channel body (731) is connected to a cooling fan (71); the plurality of oblique outlets (732) are opened along the sideline direction of the channel body (731); and the air outlet adjustment member (733) is arranged in the channel body (731).

4. The anti-interference phase-shifting rectifier dry-type large-capacity transformer according to claim 3 is characterized in that: The air outlet adjustment member (733) includes a thermal expansion box (7331), an adjustment plate (7332), an adjustment push rod (7333) and a return spring (7334); the thermal expansion box (7331) is arranged above the channel body (731), and a thermal expansion material is stored in the thermal expansion box (7331); the adjustment plate (7332) is arranged in the oblique outlet (732), and the adjustment plate (7332) and the oblique outlet (732) are connected by a torsion spring; the adjustment push rod (7333) is connected to the adjustment plate (7332); and the return spring (7334) is connected between the thermal expansion box (7331) and the adjustment push rod (7333).

5. The anti-interference phase-shifting rectifier dry-type large-capacity transformer according to claim 1 is characterized in that: The air outlet system (8) comprises an outflow channel (81), a heating channel (82), a vortex tube (83) and a cooling tube (84); the outflow channel (81) is connected to the top of the anti-interference shell (1); the heating channel (82) is connected to the outflow channel (81); the vortex tube (83) is connected to the compression system (9); and the cooling tube (84) is connected to the vortex tube (83).

6. The anti-interference phase-shifting rectifier dry-type large-capacity transformer according to claim 5 is characterized in that: The compression system (9) comprises a compression chamber (91), a compression piston (92), an air extraction spring (93), an air inlet valve (94) and an air outlet valve (95); the compression chamber (91) passes through a heating channel (82), and a heat-expanding substance is stored in the compression chamber (91); the compression piston (92) is slidably mounted in the compression chamber (91); the air extraction spring (93) is connected between the compression chamber (91) and the compression piston (92); the air inlet valve (94) is connected to the compression chamber (91); and the air outlet valve (95) is arranged between the compression chamber (91) and the vortex tube (83).

7. The anti-interference phase-shifting rectifier dry-type large-capacity transformer according to claim 6 is characterized in that: The air inlet valve (94) is a one-way valve and is only allowed to open toward the compression chamber (91); the air outlet valve (95) is a one-way valve and is only allowed to open toward the outside of the compression chamber (91).

8. The anti-interference phase-shifting rectifier dry-type large-capacity transformer according to claim 6 is characterized in that: The cooling tube (84) comprises a connecting section (841), a cooling section (842) and a reflux section (843); the connecting section (841) is connected to the vortex tube (83); the cooling section (842) is sleeved on the outside of the air intake channel (72); and the reflux section (843) is connected to the heating channel (82).

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