Dry-type transformer

Abstract

The invention discloses a dry-type transformer, and relates to the technical field of transformers, the transformer comprises a box body, two air conditioners are installed in the box body, one side of each air conditioner is provided with a heat dissipation assembly used for conducting heat dissipation on the dry-type transformer, a shell is arranged above the heat dissipation assembly, and the heat dissipation assembly is provided with an air inlet and an air outlet. An iron core is arranged in the shell, the heat dissipation assembly comprises two air inlet bins connected with the output ends of the two air conditioners in a penetrating mode, an auxiliary plate and a matching plate are slidably connected to the interiors of the two air inlet bins correspondingly, a plurality of air inlet grooves are formed in the upper portions of the air inlet bins, and the auxiliary assembly and the gain assembly are arranged in a matched mode, so that the heat dissipation efficiency is improved. Heat generated by the high-voltage side of the dry-type transformer can be rapidly dissipated and cooled, the requirement for targeted cooling of the high-voltage side of the dry-type transformer is met, and the situation that due to the fact that the heat generated by the high-voltage side of the transformer cannot be specifically and forcibly cooled, the heat of the high-voltage side of the transformer is too high, and accidents are caused is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of transformers, in particular to a dry-type transformer. BACKGROUND

[0002] The dry-type transformer is a common power equipment, and is opposite to the oil-immersed transformer, and is named because the iron core and winding are not immersed in the insulating oil, and is widely used in the fields of power supply, industrial production, commercial buildings and the like.

[0003] The dry-type transformer is usually composed of an iron core, a winding, an insulating material and a cooling device. When the dry-type transformer works, based on the principle of electromagnetic induction, the alternating current passing through the winding will generate copper loss, and the alternating magnetic flux in the iron core will cause hysteresis loss and eddy current loss. These losses will be converted into heat. When the heat reaches the preset temperature threshold of the dry-type transformer, the cooling device starts to cool it down.

[0004] However, the dry-type transformer is usually divided into a high-voltage side and a low-voltage side. Because the high-voltage side winding has more turns and thinner wire diameter, and the high-voltage side also serves as the input end of electric energy, the winding structure is relatively compact and the heat dissipation path is relatively long, which will bear more losses and thus generate more heat. In use, the existing dry-type transformer usually installs multiple refrigerators at the bottom of the transformer, and blows cold air from the bottom or side to the heat dissipation channel between the winding and the shell, so as to dissipate heat from the iron core and the winding.

[0005] However, because the high-voltage side is prone to generate more heat, when the same flow rate and flow of cold air are used to cool the transformer on the high-voltage side and the low-voltage side, the heat dissipation of the high-voltage side cannot be targeted and strengthened, so that the temperature of the high-voltage side is difficult to be discharged in time, and the rapid and effective cooling cannot be achieved. Therefore, we propose a dry-type transformer. SUMMARY

[0006] In order to solve the problem of low heat dissipation effect of the high-voltage side of the dry-type transformer and the problem of inability to target and strengthen the heat dissipation efficiency of the high-voltage side of the dry-type transformer in the background art, the present application adopts the following technical scheme:

[0007] A dry-type transformer, comprising a box body, two cold air machines are installed in the inside of the box body, a heat dissipation assembly for dissipating heat from the dry-type transformer is arranged on one side of the cold air machine, an outer shell is arranged above the heat dissipation assembly, and an iron core is arranged in the inside of the outer shell.

[0008] The heat dissipation assembly comprises two air inlet bins which are in communication with the output ends of the two cold air machines, auxiliary plates and cooperation plates which are respectively slidably connected to the insides of the two air inlet bins, and a plurality of air inlet grooves are formed in the upper part of the air inlet bin.

[0009] Preferably, the heat dissipation assembly further comprises two inclined grooves respectively formed in the lower surfaces of the auxiliary plate and the matching plate, an included angle is present between the two inclined grooves, a slide column frame is slidably arranged in the inclined grooves, an electric push rod is fixedly connected to one side of the slide column frame, and the slide column frame is fixedly connected to the output end of the electric push rod, and the electric push rod is fixedly connected to the box body.

[0010] Preferably, an auxiliary assembly is arranged in the heat dissipation channel inside the shell, the auxiliary assembly comprises a lower ring disc rotatably connected to the air inlet bin, a plurality of inclined rods are fixedly connected to the upper side of the lower ring disc, a spoiler is slidably connected to the middle position of the inclined rods, and the lower ring disc and the inclined rods are rotatably connected to the inner side of the shell.

[0011] Preferably, an upper ring disc is fixedly connected to the upper side of the inclined rod, a magnetic ring is mounted to the outer side of the shell, the spoiler is magnetically connected to the magnetic ring, and the plurality of inclined rods are arranged in an inclined manner.

[0012] Preferably, a gain assembly for improving the heat dissipation effect of the dry-type transformer is arranged on the outer side of the shell, the gain assembly comprises a gas conveying bin fixedly communicated with the shell, a conveying bin is communicated with the inside of the gas conveying bin through a hose, a cold air blower is arranged on one side of the conveying bin, the cold air blower is mounted on one side of the box body, a baffle is rotatably connected to one side of the conveying bin through a pin shaft, and an L-shaped rod is slidably connected to the inside of the conveying bin.

[0013] Preferably, a moving rod is fixedly connected to the lower side of the L-shaped rod, the lower end of the moving rod is fixedly connected to the upper surface of the auxiliary plate, an adjusting baffle is fixedly connected to the upper side of the moving rod, the adjusting baffle is slidably connected to the gas conveying bin, and the two ends of the adjusting baffle are arranged in a triangular shape.

[0014] Preferably, the gas conveying bin and the upper ring disc are through-penetrated, a right-angle hole is formed in the inside of the upper ring disc, an exhaust groove is formed in the surface of the upper ring disc, the number of through holes formed in the position of the gas conveying bin close to the high-voltage side of the transformer is greater than the number of through holes formed in the position close to the low-voltage side, and an extrusion spring is arranged at the sliding position of the L-shaped rod and the conveying bin.

[0015] Preferably, a support plate is arranged below the heat dissipation assembly and is fixedly connected to the box body, two cold air blowers are mounted above the support plate, two groups of clamping plates are arranged above the shell, and the lower side of the clamping plates is fixedly communicated with the inside of the shell.

[0016] Preferably, the inclination direction of the surface guide groove of the auxiliary plate is consistent with the inclination direction of the gas outlet groove formed in the inside of the lower ring disc, a sealing gasket is arranged at the sliding position of the auxiliary plate, the matching plate and the air inlet bin, and the air inlet groove is formed in a semicircular arc shape above the air inlet bin.

[0017] Preferably, the upper surface of the L-shaped rod is in sliding connection with the bottom surface of the gas conveying chamber, the moving rod is in sliding connection with the gas conveying chamber, and a sealing gasket is arranged at the sliding position, the gas conveying chamber is in communication with the inside of the conveying chamber through a hose close to the high-voltage side of the dry-type transformer, and a sealing gasket is arranged at the contact position of the conveying chamber and the baffle.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. By sliding the auxiliary plate and the matching plate in the inside of the air inlet chamber, and relying on the guide groove and the horizontal groove opened on the surface of the auxiliary plate and the matching plate, the flow path of the cold air generated by the air conditioner and conveyed into the heat dissipation channel in the inside of the shell can be changed, so that the cold air can quickly contact the heat generated by the iron core, and the effect of rapidly dissipating heat from the iron core and other elements can be achieved.

[0020] 2. By cooperating the auxiliary assembly and the gain assembly, the heat generated by the high-voltage side of the dry-type transformer can be rapidly dissipated and cooled, the demand for targeted cooling of the high-voltage side of the dry-type transformer is improved, and the situation that the heat generated by the high-voltage side of the transformer is forcibly cooled without being targeted, thereby causing the high-voltage side of the transformer to have too high heat and causing accidents, is avoided.

[0021] In summary, the present application overcomes the shortcomings of the prior art and has high social use value and application prospect. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0023] Figure 1 is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 is a schematic diagram of the structure of the present application without part of the box;

[0025] Figure 3 is a schematic diagram of the internal structure of the present application;

[0026] Figure 4 is a schematic diagram of the heat dissipation assembly of the present application;

[0027] Figure 5 is an exploded view of the heat dissipation assembly of the present application;

[0028] Figure 6 is a schematic diagram of the bottom structure of the present application Figure 5 ;

[0029] Figure 7 Structure diagram of auxiliary assembly of the present application;

[0030] Figure 8 Structure diagram of magnetic ring and spoiler in the present application;

[0031] Figure 9 Structure diagram of lower ring disc and upper ring disc of the present application;

[0032] Figure 10 Structure diagram of gain assembly of the present application;

[0033] Figure 11 Structure diagram of gas delivery bin and adjusting blocking plate of the present application;

[0034] Figure 12 Exploded view of gain assembly of the present application.

[0035] In the figure: 1, box body; 2, shell; 3, cold air machine; 4, heat dissipation assembly; 401, air inlet bin; 402, auxiliary plate; 403, air inlet groove; 404, matching plate; 405, electric push rod; 406, slide column frame; 407, inclined groove; 5, clamping plate; 6, auxiliary assembly; 601, lower ring disc; 602, inclined rod; 603, upper ring disc; 604, magnetic ring; 605, spoiler; 7, gain assembly; 701, moving rod; 702, L-shaped rod; 703, delivery bin; 704, baffle; 705, gas delivery bin; 706, adjusting blocking plate; 8, iron core; 9, cold air machine. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] Embodiment 1: Reference Figures 1 to 9 A dry-type transformer, comprising a box body 1, two cold air machines 3 are installed inside the box body 1, one side of the cold air machine 3 is configured with a heat dissipation assembly 4 for heat dissipation of the dry-type transformer, an outer shell 2 is arranged above the heat dissipation assembly 4, and an iron core 8 is arranged inside the outer shell 2;

[0038] The heat dissipation assembly 4 comprises two air inlet bins 401 which are in through connection with the output ends of the two cold air machines 3, the inside of the two air inlet bins 401 is respectively slidably connected with an auxiliary plate 402 and a matching plate 404, and a plurality of air inlet grooves 403 are formed above the air inlet bin 401.

[0039] The present application considers that in the use process of the existing dry-type transformer, a plurality of cooling machines 3 are usually installed on both sides or the bottom of the transformer, at this time, the operation of the cooling machine 3 can blow the cooling air into the heat dissipation channel inside the shell 2 or the outside of the shell 2, thereby cooling the coil and winding, but since the dry-type transformer is divided into high-voltage side and low-voltage side, the winding turns on the high-voltage side are more, the wire diameter is thinner, and the high-voltage side also serves as the input end of electric energy, the winding structure is relatively compact, and the heat dissipation path is longer, and the high-voltage side of the transformer often generates excessive heat, at this time, when the cooling machine 3 is used to cool the core 8, it cannot be targeted to cool the high-voltage side of the dry-type transformer, which may cause uneven heat dissipation at the local position of the high-voltage side, reducing the effect of cooling the core 8;

[0040] Therefore, by fixing the through two air inlets 401 at the output end of the two cooling machines 3, and opening a plurality of air inlet grooves 403 corresponding to a plurality of shells 2 above the air inlet 401, when the cooling machine 3 is started, the cold air generated at this time will be transported to the inside of the air inlet 401, and then transported to the heat dissipation channel inside the shell 2 from the plurality of air inlet grooves 403 above the air inlet 401, which can effectively cool the core 8 inside the shell 2. It should be noted that since the inside of the air inlet 401 is arc-shaped, at this time, the cold air generated by the cooling machine 3 will flow to the position of the air inlet groove 403 in an arc-shaped motion track after entering the inside of the air inlet 401, and then flow out from above the air inlet groove 403, which can avoid the cold air directly blowing to the surface of the core 8 inside the shell 2, causing the cold air to flow upwards. Effectively, the near-cooling and far-heating situation occurs, improving the flow effect of the cold air in the heat dissipation channel inside the shell 2, and avoiding the influence of excessive cooling at the bottom of the shell 2;

[0041] It should be noted that when the working load of the dry-type transformer increases, the heat at the high-voltage side and the low-voltage side of the dry-type transformer also increases. Therefore, the auxiliary plate 402 and the matching plate 404 are respectively arranged to slide in the two air inlet bins 401, the guide grooves are arranged in the auxiliary plate 402, and the horizontal grooves are arranged in the matching plate 404. When the auxiliary plate 402 and the matching plate 404 slide into the air inlet bin 401, the horizontal grooves of the matching plate 404 partially coincide with the air inlet grooves 403 arranged above the air inlet bin 401. When the cold air is blown from the air conditioner 3 to the inside of the air inlet bin 401, the cold air flows to the horizontal grooves arranged on the surface of the matching plate 404 after being guided in the air inlet bin 401, so that the flow path of the cold air is lengthened, and the flow rate of the cold air is prevented from being too large due to the increase in the working efficiency of the air conditioner 3, so that the air flow at the low-voltage side of the dry-type transformer is not disturbed. The flow path of the cold air in the air inlet bin 401 is adjusted by the matching plate 404, so that the cold air with increased flow rate and flow rate can uniformly flow to the low-voltage side, and the heat dissipation effect of the dry-type transformer is improved.

[0042] It should be noted that since more heat is generated at the high-voltage side, the high-voltage side of the transformer needs to be cooled. Therefore, when the auxiliary plate 402 slides into the air inlet bin 401, a plurality of guide grooves are arranged on the surface of the auxiliary plate 402. When the cold air is blown from the air conditioner 3 to the inside of the air inlet bin 401, the cold air flows into the heat dissipation channel in the housing 2 in an inclined state along the guide grooves arranged on the surface of the auxiliary plate 402. Since the core 8 in the housing 2 is usually arranged in a cylindrical shape, when the cold air enters the heat dissipation channel at an inclined angle, the cold air flows along the cylindrical core 8, so that the cold air can fully flow in the heat dissipation channel in the housing 2, the cold air uniformly contacts the core 8, and the heat dissipation effect of the core 8 is improved.

[0043] It should be further noted that when the cold air flows in the heat dissipation channel in the housing 2, the cold air flows from bottom to top, and after the heat exchange and transmission, the hot air is quickly discharged from the top of the housing 2. When the cold air enters the heat dissipation channel in the housing 2 in an inclined state, the cold air forms an angle with the heat dissipation channel, so that the cold air can fully interfere with the heat generated on the surface of the core 8 during the flow process, the heat exchange effect of the cold air and the heat is improved, and the high-voltage side of the dry-type transformer is quickly cooled.

[0044] Specifically, referring to Figures 4 to 6The heat dissipation assembly 4 further comprises two inclined grooves 407 respectively formed in the lower surfaces of the auxiliary plate 402 and the matching plate 404, the two inclined grooves 407 have an included angle, a slide column frame 406 is slidably arranged in the inclined grooves 407, one side of the slide column frame 406 is fixedly connected with an electric push rod 405, and the slide column frame 406 is fixedly connected with the output end of the electric push rod 405, and the electric push rod 405 is fixedly connected with the box body 1.

[0045] During operation, when the load of the dry-type transformer increases, the operation power of the air cooler 3 can be increased, and the electric push rod 405 can be started to drive the slide column frame 406 to move to a position close to the center of the box body 1, at this time, the upper end of the slide column frame 406 slides in the inclined grooves 407, and because the two inclined grooves 407 have an included angle, when the slide column frame 406 slides in the inclined grooves 407, the slide column frame 406 pushes the auxiliary plate 402 and the matching plate 404 to move relatively, so that the auxiliary plate 402 and the matching plate 404 slide in the two air inlet chambers 401, thereby changing the flow path of the cold air generated by the air cooler 3 to the air inlet chambers 401 and the air inlet grooves 403, and effectively improving the heat dissipation effect of the high-voltage side and the low-voltage side of the dry-type transformer.

[0046] It should be noted that because the guide grooves and the horizontal grooves on the surfaces of the auxiliary plate 402 and the matching plate 404 are located directly below the air inlet grooves 403 and are in sliding connection with the air inlet chambers 401, in order to avoid the situation that the airflow of the low-voltage side of the transformer is turbulent and cannot dissipate heat in the low-voltage area during the delivery of the cold air, the diameter of the horizontal grooves in the matching plate 404 is slightly smaller than the diameter of the air inlet grooves 403, so that even if the matching plate 404 slides in the air inlet chamber 401, the cold air will not be delivered to the inside of the housing 2 in the heat dissipation channel in a discontinuous manner after the flow path of the cold air is lengthened, and the situation that the airflow of the low-voltage area of the dry-type transformer is turbulent can be avoided, thereby effectively improving the uniformity and stability of heat dissipation in the low-voltage area of the dry-type transformer.

[0047] Specifically, referring to Figures 7 to 9 The inside of the housing 2 is provided with an auxiliary assembly 6, the auxiliary assembly 6 comprises a lower ring disc 601 in rotating connection with the air inlet chamber 401, a plurality of inclined rods 602 are fixedly connected above the lower ring disc 601, a spoiler 605 is slidably connected at the middle position of the inclined rods 602, and the lower ring disc 601 and the inclined rods 602 are in rotating connection with the inner side of the housing 2.

[0048] The application also considers that when the cold air path is changed, the cold air flows to the high-voltage side of the dry-type transformer in an inclined state, but the cold air always flows from bottom to top, which may cause the lower part of the heat dissipation channel inside the shell 2 to have better heat dissipation effect, while the upper part has weaker heat dissipation effect. Even if the cold air is transported into the channel in an inclined state, it cannot effectively disturb the heat on the upper surface of the iron core 8, and cannot fully dissipate heat from the iron core 8. Therefore, by arranging the lower ring disc 601 in the heat dissipation channel inside the shell 2, when the cold air flows out from the air inlet groove 403 above the air inlet chamber 401 in an inclined state, the air outlet groove is inclined inside the lower ring disc 601. At this time, the cold air will flow in the air outlet groove opened by the lower ring disc 601, thereby exerting a thrust force on the lower ring disc 601, so that the lower ring disc 601 rotates inside the shell 2. When the lower ring disc 601 rotates, it drives the plurality of inclined rods 602 to rotate. The rotation of the inclined rods 602 not only can destroy the heat on the surface of the iron core 8, so that it quickly mixes with the cold air and accelerates the heat dissipation effect, but also can effectively mix the heat and the cold air, accelerate the exchange efficiency between the heat and the cold air, and avoid the situation that the cold air and the heat cannot be fully mixed at the upper position of the heat dissipation channel, further improving the heat dissipation effect of the iron core 8.

[0049] It should be noted that when the lower ring disc 601 drives the inclined rods 602 to rotate, the inclined rods 602 also drive the spoiler 605 to rotate synchronously. Since there is a gap between the spoiler 605 and the inclined rods 602, and the spoiler 605 is inclinedly arranged at the middle position of the inclined rods 602, when the inclined rods 602 drive the spoiler 605 to rotate, the spoiler 605 can further improve the disturbance effect of the heat on the surface of the iron core 8, further improve the mixing effect of the cold air and the heat, so that the cold air can fully contact with the heat, avoid the situation that the cooling is not uniform in some parts, and further improve the mixing effect of the cold air and the heat.

[0050] Specifically, referring to Figures 7 to 9 , the upper ring disc 603 is fixedly connected to the upper side of the inclined rod 602, the magnetic ring 604 is installed on the outer side of the shell 2, the spoiler 605 is magnetically connected to the magnetic ring 604, and the plurality of inclined rods 602 are arranged in an inclined manner.

[0051] When working, since the magnetic ring 604 is arranged at the low-voltage side of the dry-type transformer, when the lower ring disc 601 drives the spoiler 605 to one side of the magnetic ring 604 through the inclined rod 602, at this time, the spoiler 605 is adsorbed by the magnetic ring 604, so as to slide to a position away from the iron core 8 at the groove position in the middle of the inclined rod 602, so that the spoiler 605 can be attached to the inside of the groove of the inclined rod 602, so as to avoid that after the inclined rod 602 drives the spoiler 605 to move to the low-voltage side of the dry-type transformer, the spoiler 605 disturbs the cold air at the low-voltage side, so as to cause the cold air at the low-voltage side to be disturbed, thereby further improving the uniformity and stability of the cold air flowing at the low-voltage side; after the inclined rod 602 drives the spoiler 605 to move out of the magnetic field range of the magnetic ring 604, at this time, the spoiler 605 is reset under the elastic force of the spring and moves to a position close to the center line of the iron core 8, so that after the spoiler 605 moves to the high-voltage side, it can continue to disturb the heat on the surface of the iron core 8, so that the cold air can be fully mixed with the heat.

[0052] It needs to be noted again that since the inclined rod 602 is arranged obliquely above the lower ring disc 601, after the cold air flows into the heat dissipation channel in the inside of the shell 2 in an inclined state through the air inlet groove 403, at this time, the inclined rod 602 can also guide the cold air to a certain extent, so that the cold air contacts the spoiler 605 at the middle position of the heat dissipation channel flowing quickly, so that the spoiler 605 can quickly mix the heat with the cold air, avoid the heat dissipation uneven situation above the heat dissipation channel, and effectively improve the heat dissipation effect of the iron core 8 in the inside of the shell 2.

[0053] Embodiment 2: refer to Figures 10 to 12 The difference between this embodiment and embodiment 1 is that the outside of the shell 2 is provided with a gain assembly 7 for improving the heat dissipation effect of the dry-type transformer, the gain assembly 7 comprises a gas conveying bin 705 fixedly communicated with the shell 2, the inside of the gas conveying bin 705 is communicated with a conveying bin 703 through a hose, one side of the conveying bin 703 is provided with a cold air fan 9, the cold air fan 9 is installed on one side of the box 1, the conveying bin 703 is rotatably connected with a baffle 704 through a pin shaft, and the inside of the conveying bin 703 is slidably connected with an L-shaped rod 702.

[0054] After the cold air machine 3 conveys the cold air into the heat dissipation channel in the inside of the shell 2 through the air inlet bin 401, at this time, the cold air can be fully mixed with the heat generated by the iron core 8 under the disturbance of the inclined rod 602 and the spoiler 605, and the mixed hot air can be extruded by the continuously conveyed cold air below, and then discharged from the top of the shell 2, but considering that the hot air may still be mixed with the heat generated by the iron core 8 during the rising process, so as to cause the residual heat, which may cause the hot air to be not uniformly discharged, so as to cause the hot air to be residual;

[0055] Therefore, by driving the L-shaped rod 702 to slide inside the conveying bin 703, since the upper end of the conveying bin 703 is in sliding contact with the inner side of the baffle plate 704, and the baffle plate 704 is rotationally connected to one side of the conveying bin 703 through a pin shaft, and the baffle plate 704 is provided with a reset spring between the conveying bin 703, when the L-shaped rod 702 no longer exerts a pushing force on the baffle plate 704, the baffle plate 704 will reset under the action of the spring force, so that the conveying bin 703 is in a sealed state. It should be noted that since the air cooler 9 is constantly running to generate cold air, when the conveying bin 703 is in an incomplete sealing state, the cold air will directly blow to the surface of the outer shell 2 at this time, and the surface of the outer shell 2 is cooled and cooled. However, considering that the load of the dry-type transformer increases, the heat generated by the high-voltage side of the transformer will increase, and the cooling effect of the surface of the outer shell 2 is not enough to meet the cooling demand;

[0056] It should be noted that by conveying the cold air generated by the air cooler 9 through the hose inside the conveying bin 703 to the inside of the air conveying bin 705, the cold air will be filtered by the conveying bin 703, and then conveyed to the inside of the air conveying bin 705 through the hose, and then conveyed to the inside of the outer shell 2. When the cold air enters the heat dissipation channel inside the outer shell 2, the cold air will enter the heat dissipation channel from top to bottom at this time, and can form a convection with the cold air flowing from bottom to top below. At this time, the cold air and the cold air will be in the middle position of the inclined rod 602, and when the inclined rod 602 drives the spoiler 605 to rotate at this time, the cold air, cold air and heat can be mixed. On the one hand, it can accelerate the cooling effect of the core 8, and on the other hand, it can make the cold air and the heat exchange after the heat exchange, and the residual heat during the rising of the hot air cannot effectively discharge the heat generated by the core 8. It can improve the effect of heat dissipation.

[0057] It should be noted again that since the baffle plate 704 and the conveying bin 703 are connected by a reset spring, when the conveying bin 703 is in a sealed state, the cold air generated by the air cooler 9 will not move from the connection position of the baffle plate 704 and the conveying bin 703, so that the cold air can be fully conveyed from the hose to the inside of the air conveying bin 705, so that the air conveying bin 705 guides the cold air to the inside of the heat dissipation channel of the outer shell 2, so that the cold air and the cold air form a convection, and improve the cooling effect of the core 8.

[0058] Specifically, referring to Figures 10 to 12 , the lower end of the L-shaped rod 702 is fixedly connected with the moving rod 701, the lower end of the moving rod 701 is fixedly connected with the upper surface of the auxiliary plate 402, the upper end of the moving rod 701 is fixedly connected with the adjusting baffle 706, the adjusting baffle 706 is slidably connected with the air conveying bin 705, and the two ends of the adjusting baffle 706 are triangularly arranged.

[0059] When the load of the dry-type transformer increases, the auxiliary plate 402 slides in the air inlet chamber 401, and the auxiliary plate 402 drives the moving rod 701 to move synchronously, the moving rod 701 drives the L-shaped rod 702 to slide in the conveying chamber 703, the cold air is conveyed to the air conveying chamber 705 through the hose, and the adjusting baffle 706 is fixedly arranged at the upper end of the moving rod 701, when the moving rod 701 drives the L-shaped rod 702 to move away from the baffle 704, the adjusting baffle 706 also moves away from the low-voltage side of the dry-type transformer in the air conveying chamber 705, so that the distance between the arc surface of the adjusting baffle 706 and the through hole in the air conveying chamber 705 is reduced, and a large amount of cold air is prevented from flowing into the heat dissipation channel of the shell 2 through the through hole in the air conveying chamber 705, so that the normal flow of the cold air on the low-voltage side of the transformer is not affected, and the cold air used on the low-voltage side is protected.

[0060] It should be noted that when the adjusting baffle 706 moves away from the low-voltage side of the transformer, the distance between the adjusting baffle 706 and the high-voltage side increases, a large amount of cold air flows into the heat dissipation channel in the shell 2 through the large distance, and the cold air, the cold wind and the heat are fully mixed at the high-voltage side, and the generated hot air is quickly and uniformly discharged from the top of the shell 2 under the extrusion of the continuously entering cold air and cold wind, so that the heat dissipation effect of the high-voltage side of the iron core 8 is effectively improved.

[0061] Specifically, referring to Figures 10 to 12 , the air conveying chamber 705 is in communication with the inner portion of the upper ring disc 603, the inner portion of the upper ring disc 603 is provided with a right-angle hole, the surface of the upper ring disc 603 is provided with an air outlet groove, the number of through holes in the air conveying chamber 705 and the shell 2 near the high-voltage side of the transformer is greater than that near the low-voltage side, and the sliding position of the L-shaped rod 702 and the conveying chamber 703 is provided with an extrusion spring.

[0062] When the cold air flows from bottom to top to cool the iron core 8, the cold wind flows from top to bottom, which not only improves the cooling effect of the iron core 8, but also prevents the hot air from being quickly and uniformly discharged after the heat exchange between the cold air and the iron core 8, so that the iron core 8 is quickly cooled, but when the cold wind changes from blowing to the surface of the shell 2 to blowing into the heat dissipation channel in the shell 2, in order to avoid the mixing of the cold wind and the cold air at the middle position of the inclined rod 602, so that vortex or air flow disorder occurs;

[0063] Therefore, by opening the right-angle holes inside the upper ring disc 603 above the plurality of inclined rods 602, when the inclined rods 602 drive the upper ring disc 603 to rotate, the right-angle holes inside the upper ring disc 603 will coincide with the through holes inside the shell 2 and the gas conveying chamber 705 intermittently, at this time, the cold air inside the gas conveying chamber 705 will be conveyed to the right-angle holes inside the upper ring disc 603 through the through holes inside the shell 2, and then blown to the heat dissipation channels inside the shell 2 to exchange with the cold air in convection, so as to accelerate the heat dissipation efficiency of the iron core 8.

[0064] It should be noted that, since the through holes inside the gas conveying chamber 705 and the shell 2 are mostly located near the high-voltage side of the dry-type transformer, at this time, the cold air conveyed from the gas conveying chamber 705 to the upper ring disc 603 will directly flow to the position of the high-voltage side of the transformer, so as to exchange with the cold air in convection, and since the upper ring disc 603 is inclined, at this time, the upper ring disc 603 can also guide the cold air to a certain extent, so that the cold air quickly exchanges with the cold air in convection, and can avoid the cold air directly blowing to the heat dissipation channels inside the shell 2, causing the airflow in the heat dissipation channels to be disturbed, so as to improve the heat dissipation efficiency of the iron core 8.

[0065] Specifically, referring to Figures 1 to 3 , the lower part of the heat dissipation assembly 4 is provided with a support plate, and the support plate is fixedly connected with the box body 1, the two air conditioners 3 are installed above the support plate, the upper part of the shell 2 is provided with two groups of clamping plates 5, and the lower part of the clamping plate 5 is fixedly communicated with the inside of the shell 2.

[0066] When working, through the installation of the two heat dissipation assemblies 4 and the clamping plates 5, when the cold air enters the heat dissipation channels inside the shell 2 through the two heat dissipation assemblies 4, the hot air exchanged with the heat of the iron core 8 will be discharged from the inside of the two clamping plates 5, and by setting the gas conveying chamber 705 outside the shell 2, the entry of the cold air into the heat dissipation channels inside the shell 2 will not affect the discharge effect of the hot air from the inside of the clamping plate 5, but under the double extrusion of the cold air and the cold wind, the hot air can be quickly discharged from the heat dissipation channels, so as to improve the heat dissipation effect.

[0067] Specifically, referring to Figures 4 to 6 , the inclination direction of the surface guide groove of the auxiliary plate 402 is consistent with the inclination direction of the gas outlet groove inside the lower ring disc 601, the auxiliary plate 402 and the cooperation plate 404 are provided with sealing gaskets at the sliding positions of the gas conveying chamber 401, and the gas inlet groove 403 is opened in a semicircular arc shape above the gas conveying chamber 401.

[0068] When working, because the inclined direction of the surface guide groove of the auxiliary plate 402 is consistent with the inclined direction of the air outlet groove in the lower ring disc 601, when the auxiliary plate 402 slides in the air inlet bin 401, the cold air flows to the air inlet groove 403, and then the cold air blows to the air outlet groove in the lower ring disc 601 in an inclined state, so as to drive the lower ring disc 601 to rotate in the shell 2, and because the horizontal groove is arranged in the cooperation plate 404, the cold air is discharged from the cooperation plate 404 and contacts the lower ring disc 601, and then the cold air sprays to the low-voltage side of the dry-type transformer in an inclined state, so that the cold air also flows upward quickly, thereby uniformly and stably cooling the low-voltage side of the transformer.

[0069] It should be noted that because the air inlet groove 403 is arranged in a semicircular arc shape above the air inlet bin 401, and the air outlet groove in the lower ring disc 601 is uniformly arranged, the cold air that is inclined from the surface guide groove of the auxiliary plate 402 to the air outlet groove in the lower ring disc 601 continuously applies a thrust force to the lower ring disc 601, so that the lower ring disc 601 can continuously drive the inclined rod 602 and the upper ring disc 603 to rotate, so that the lower ring disc 601 can stably rotate, and the spoiler 605 at the middle position of the inclined rod 602 can effectively mix the cold air, cold wind and heat, thereby improving the heat dissipation effect of the iron core 8.

[0070] Specifically, referring to Figures 10 to 12 The upper surface of the L-shaped rod 702 is in sliding connection with the bottom surface of the air conveying bin 705, the moving rod 701 is in sliding connection with the air conveying bin 705, and sealing washers are arranged at the sliding positions, the air conveying bin 705 is in communication with the conveying bin 703 through a hose close to the high-voltage side of the dry-type transformer, and sealing washers are arranged at the contact positions of the conveying bin 703 and the baffle 704.

[0071] When the moving rod 701 drives the L-shaped rod 702 to move, the L-shaped rod 702 slides on the lower surface of the air conveying bin 705, so that the L-shaped rod 702 can stably slide, and the sealing washers arranged at the sliding positions of the moving rod 701 and the air conveying bin 705 can prevent the cold wind from leaking when the cold wind enters the air conveying bin 705, thereby effectively ensuring the pressure of the cold wind conveyed to the heat dissipation channel in the shell 2, so that the cold wind can quickly enter the heat dissipation channel in the shell 2, and the heat dissipation and cooling effect of the iron core 8 is improved.

[0072] The control mode of the present application is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming of those skilled in the art, and the power supply also belongs to the common knowledge in the art, and the present application is mainly used for protecting mechanical devices, so the control mode and circuit connection of the present application will not be explained in detail.

[0073] The above description is only the preferred embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent substitutions or changes according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. Dry-type transformer comprising a tank (1), characterized in that: The inside of the box (1) is provided with two air coolers (3), one side of the air cooler (3) is provided with a heat dissipation assembly (4) for heat dissipation of the dry-type transformer, the upper side of the heat dissipation assembly (4) is provided with a shell (2), the inside of the shell (2) is provided with an iron core (8); The heat dissipation assembly (4) comprises two air inlet bins (401) connected with the output ends of the two air coolers (3), the inside of the two air inlet bins (401) is respectively slidably connected with an auxiliary plate (402) and a matching plate (404), a plurality of air inlet grooves (403) are formed in the upper side of the air inlet bin (401).

2. A dry-type transformer according to claim 1, characterized in that: The heat dissipation assembly (4) further comprises two inclined grooves (407) respectively formed in the lower surfaces of the auxiliary plate (402) and the matching plate (404), the two inclined grooves (407) have an included angle therebetween, a slide column frame (406) is slidably arranged in the inside of the inclined groove (407), one side of the slide column frame (406) is fixedly connected with an electric push rod (405), and the output end of the electric push rod (405) is fixedly connected with the slide column frame (406), and the electric push rod (405) is fixedly connected with the box (1).

3. A dry-type transformer according to claim 1, characterized in that: An auxiliary assembly (6) is arranged in the heat dissipation channel in the inside of the shell (2), the auxiliary assembly (6) comprises a lower ring disc (601) rotatably connected with the air inlet bin (401), a plurality of inclined rods (602) are fixedly connected to the upper side of the lower ring disc (601), a spoiler (605) is slidably connected to the middle position of the inclined rod (602), and the lower ring disc (601) and the inclined rod (602) are rotatably connected with the inside of the shell (2).

4. A dry-type transformer according to claim 3, characterized in that: The upper side of the inclined rod (602) is fixedly connected with an upper ring disc (603), the outside of the shell (2) is provided with a magnetic ring (604), the spoiler (605) is magnetically connected with the magnetic ring (604), and the plurality of inclined rods (602) are arranged in an inclined manner.

5. A dry-type transformer as claimed in claim 1, characterized in that: The outside of the shell (2) is provided with a gain assembly (7) for improving the heat dissipation effect of the dry-type transformer, the gain assembly (7) comprises a gas conveying bin (705) fixedly connected with the shell (2), the inside of the gas conveying bin (705) is communicated with a conveying bin (703) through a hose, one side of the conveying bin (703) is provided with a cold air fan (9), the cold air fan (9) is arranged on one side of the box (1), one side of the conveying bin (703) is rotatably connected with a baffle (704) through a pin shaft, and the inside of the conveying bin (703) is slidably connected with an L-shaped rod (702).

6. A dry-type transformer according to claim 5, characterized in that: The lower side of the L-shaped rod (702) is fixedly connected with a moving rod (701), the lower end of the moving rod (701) is fixedly connected with the upper surface of the auxiliary plate (402), the upper side of the moving rod (701) is fixedly connected with an adjusting baffle (706), the adjusting baffle (706) is slidably connected with the gas conveying bin (705), and the two ends of the adjusting baffle (706) are arranged in a triangular shape.

7. A dry-type transformer according to claim 6, characterized in that: The gas conveying bin (705) is through in the inside of the upper ring disc (603), the inside of the upper ring disc (603) is provided with a right-angle hole, the surface of the upper ring disc (603) is provided with a gas exhaust groove, the number of through holes of the gas conveying bin (705) and the shell (2) near the high-voltage side of the transformer is greater than that near the low-voltage side, and the sliding position of the L-shaped rod (702) and the conveying bin (703) is provided with a compression spring.

8. A dry-type transformer as claimed in claim 1, characterized in that: The lower portion of the heat dissipation assembly (4) is provided with a supporting plate, and the supporting plate is fixedly connected with the box body (1), the two air conditioners (3) are installed above the supporting plate, the upper portion of the shell (2) is provided with two groups of clamping plates (5), and the lower portion of the clamping plate (5) is fixedly connected with the inside of the shell (2).

9. A dry-type transformer as claimed in claim 2, characterized in that: The inclination direction of the surface guide groove of the auxiliary plate (402) is consistent with the inclination direction of the gas outlet groove inclinedly arranged in the inside of the lower ring disc (601), the sliding position of the auxiliary plate (402) and the cooperation plate (404) and the air inlet bin (401) is provided with a sealing gasket, and the air inlet groove (403) is arranged in a semicircular arc shape above the air inlet bin (401).

10. A dry-type transformer according to claim 7, characterized in that: The upper surface of the L-shaped rod (702) is slidably connected with the bottom surface of the gas conveying bin (705), the moving rod (701) is slidably connected with the gas conveying bin (705), and a sealing gasket is arranged at the sliding position, the gas conveying bin (705) is communicated with the inside of the conveying bin (703) through a hose near the high-voltage side of the dry-type transformer, and a sealing gasket is arranged at the contact position of the conveying bin (703) and the baffle (704).

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