CN119008175A - Energy-saving dry-type transformer - Google Patents
Energy-saving dry-type transformer Download PDFInfo
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- CN119008175A CN119008175A CN202411291037.4A CN202411291037A CN119008175A CN 119008175 A CN119008175 A CN 119008175A CN 202411291037 A CN202411291037 A CN 202411291037A CN 119008175 A CN119008175 A CN 119008175A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/02—Casings
- H01F27/025—Constructional details relating to cooling
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Abstract
本发明属于干式变压器技术领域，具体涉及一种节能型干式变压器，包括变压器本体以及固定设置在其上下两端的连接支架，变压器本体包括铁芯、低压绕组和高压绕组，低压绕组和高压绕组间隔并组成冷却气道，冷却气道内同轴设有隔热筒，隔热筒与高压绕组之间共同组成第一散热气道，隔热筒内圈与低压绕组共同组成第二散热气道，隔热筒的外圈表面设有第一导气壳体，第一导气壳体与隔热筒之间共同组成封闭的第一环形腔室，第一环形腔室、第一散热气道共同连通有第一散热风机，隔热筒的内圈表面设有第二导气壳体，采用本发明技术方案，能够有效解决现目前干式变压器在工作时，高压绕组与低压绕组之间的冷却气道不能均匀地对两者进行有效散热的问题。
The present invention belongs to the technical field of dry-type transformers, and specifically relates to an energy-saving dry-type transformer, comprising a transformer body and connecting brackets fixedly arranged at the upper and lower ends thereof, the transformer body comprising an iron core, a low-voltage winding and a high-voltage winding, the low-voltage winding and the high-voltage winding are spaced apart and form a cooling air duct, an insulating cylinder is coaxially arranged in the cooling air duct, the insulating cylinder and the high-voltage winding together form a first heat dissipation air duct, the inner circle of the insulating cylinder and the low-voltage winding together form a second heat dissipation air duct, a first air guide shell is arranged on the outer circle surface of the insulating cylinder, the first air guide shell and the insulating cylinder together form a closed first annular chamber, the first annular chamber and the first heat dissipation air duct are jointly connected to a first heat dissipation fan, and a second air guide shell is arranged on the inner circle surface of the insulating cylinder. The technical solution of the present invention can effectively solve the problem that when the current dry-type transformer is working, the cooling air duct between the high-voltage winding and the low-voltage winding cannot effectively dissipate heat to both evenly.
Description
Technical Field
The invention belongs to the technical field of dry transformers, and particularly relates to an energy-saving dry transformer.
Background
The dry type transformer is widely used in places such as local illumination, high-rise buildings, airports and wharf CNC mechanical equipment, and simply refers to a transformer with an iron core and windings not immersed in insulating oil, and because the heat inside the transformer is large, the heat dissipation is not timely, the working efficiency of the transformer is affected, the transformer needs to be cooled, the cooling mode is divided into natural air cooling and forced air cooling, when in natural air cooling, the transformer can continuously run for a long time under rated capacity, when in forced air cooling, the surface of the winding of the transformer can be quickly cooled, the service life is prolonged, but when in actual work, the convection heat dissipation effect of air cooling is limited, if the external temperature is too high, the air cooling effect is very little, and the transformer cannot be effectively cooled in time.
Therefore, chinese patent discloses a heat radiation structure of a dry type transformer (patent publication No. CN 117672673A), through the gas-liquid conversion of the phase change cooling liquid in the copper heat pipe, the heat generated by the self-winding absorbed by the heat conducting plate is quickly transferred into the heat radiation fins of the cooling device, the heat radiation fins can also ensure the quick absorption of the heat transferred from the copper heat pipe to the copper heat pipe, so that the temperature of the tail end of the copper heat pipe is always lower than the temperature of the heat conducting plate, the heat transfer process can be continuously and efficiently carried out, and finally the temperature control of the dry type transformer is realized.
According to the technical scheme, although the temperature control of the dry-type transformer is realized, the heat of the winding is absorbed through the heat transfer device and transferred to the heat conducting plate, then the heat is dissipated through the copper heat pipe, the heat dissipating fins and other components, the heat on the surface of the winding can be cooled through multiple conduction, the heat is not directly cooled at the heat source, and the cooling effect is not ideal; in the actual working process, the heat source of the dry-type transformer is mainly an iron core and a winding, the winding heats due to resistance loss generated by current, the iron core heats due to hysteresis loss and eddy current loss caused by magnetic flux change, wherein, particularly, the high-voltage winding and the low-voltage winding are easy to generate and accumulate heat, the problems of heat accumulation between the high-voltage winding and the low-voltage winding and poor heat dissipation effect can not be effectively solved in the prior art, even though there is a cooling air channel between the high-voltage winding and the low-voltage winding at present (refer to fig. 1), the air flow direction in the cooling air channel is from bottom to top, which often results in lower temperature near the inlet end of the cooling air channel, and higher temperature near the outlet end of the cooling air channel, which does not have the effect of cooling the whole high-voltage winding and the low-voltage winding, therefore, we propose an energy-saving dry-type transformer for solving the technical problem.
Disclosure of Invention
In view of the above, the present invention is directed to an energy-saving dry-type transformer, which is used for solving the problem that the cooling air passage between the high-voltage winding and the low-voltage winding cannot uniformly dissipate heat when the current dry-type transformer works.
In order to achieve the above purpose, the present invention provides the following technical solutions:
An energy-saving dry transformer comprises a transformer body and connecting brackets fixedly arranged at the upper end and the lower end of the transformer body, wherein the transformer body comprises an iron core, a low-voltage winding and a high-voltage winding which are sequentially sleeved outside the iron core from inside to outside, the low-voltage winding and the high-voltage winding are spaced and form an annular cooling air passage, a vertically arranged heat insulation cylinder is coaxially arranged in the cooling air passage, the heat insulation cylinder is fixedly arranged on the connecting brackets, the surfaces of the heat insulation cylinder and the surfaces of the low-voltage winding and the high-voltage winding are spaced, an annular first heat dissipation air passage is jointly formed between the outer ring surface of the heat insulation cylinder and the surface of the high-voltage winding, an annular second heat dissipation air passage is jointly formed between the inner ring surface of the heat insulation cylinder and the surface of the low-voltage winding, an annular first air guide shell is alternately arranged on the outer ring surface of the heat insulation cylinder, a closed first annular chamber is jointly formed between the first air guide shell and the heat insulation cylinder, the first air guide shell is close to the peripheral side surface of the high-voltage winding and is provided with a plurality of air guide openings communicated with the inside of the first annular chamber, the first annular chamber and the first heat dissipation air passage are jointly communicated with a first heat dissipation air blower, annular second air guide shells are arranged on the inner ring surface of the heat insulation cylinder at intervals, a closed second annular chamber is jointly formed between the second air guide shells and the heat insulation cylinder, the second air guide openings are jointly formed in the surface of the second air guide shells close to the low-voltage winding, the second annular chamber and the second heat dissipation air passage are jointly communicated with a second heat dissipation air blower, and the first heat dissipation air blower and the second heat dissipation air blower are both fixed on the surface of the connecting support, wherein air flows generated by the first heat dissipation air passage and the second heat dissipation air passage respectively flow through the first heat dissipation air passage and the second heat dissipation air passage along different directions up and down, and respectively flow towards the corresponding high-voltage winding, the low-voltage winding surface dissipates heat.
Further, a plurality of vertically arranged first separation blocks are arranged on the surface of the first air guide shell, facing the periphery of the high-voltage winding, and are uniformly arranged at intervals around the vertical axis of the first air guide shell, one end, far away from the first air guide shell, of each first separation block is abutted against the surface of the high-voltage winding, and a plurality of air guide openings between any two adjacent first separation blocks are arranged at intervals along the vertical direction; the surface of the second air guide shell facing the low-voltage winding is provided with a plurality of vertically arranged second partition blocks, the second partition blocks are uniformly arranged at intervals around the vertical axis of the second air guide shell, one side surface of each second partition block is abutted against the surface of the low-voltage winding, and a plurality of air guide openings between any two adjacent second partition blocks are arranged at intervals along the vertical direction.
Further, every the equal activity of air guide mouth department is equipped with a plurality of pendulum leaves, and a plurality of pendulum leaves in the air guide mouth set up along vertical direction even interval, every the pendulum leaf is all rotated and is connected at first air guide casing, second air guide casing surface, every the pendulum leaf all is connected with the drive assembly that drives its reciprocal wobbling in vertical plane, the drive piece is fixed on the linking bridge surface, wherein, when the air current in first annular cavity, the second annular cavity passes through the air guide mouth, every pendulum leaf makes the air current of air guide mouth department reciprocate at vertical plane under the drive of drive assembly.
Further, one end surface of the heat insulation cylinder penetrates out of the cooling air passage and is connected with a first driving motor which drives the heat insulation cylinder to rotate around the vertical axis, and the first driving motor is fixedly arranged on the surface of the connecting support.
Further, on the horizontal plane, each first partition block and each second partition block are arranged in a staggered mode at intervals along the annular direction.
Further, the outlet ends of the first heat radiation fan and the second heat radiation fan are communicated with a cooling assembly, and the cooling assembly is fixedly arranged on the surface of the connecting support.
Further, a plurality of through channels for heat insulation are formed in the heat insulation cylinder, each through channel is vertically arranged, and two ends of each through channel respectively penetrate through the upper end face and the lower end face of the heat insulation cylinder.
The invention has the beneficial effects that:
1. According to the invention, the heat insulation cylinder is arranged in the cooling air passage between the high-voltage winding and the low-voltage winding, the cooling air passage is divided into two independent heat dissipation areas, and heat dissipation airflows enter the cooling air passage in opposite directions to dissipate heat of the high-voltage winding and the low-voltage winding, so that the problem that the temperature difference between the inlet and the outlet of the cooling air passage is large when the traditional unidirectional airflows dissipate heat is effectively prevented, the first air guide shell and the second air guide shell are respectively arranged on the peripheral side surfaces of the outer ring and the inner ring of the heat insulation cylinder, and the airflows entering the first air guide shell and the second air guide shell are subjected to the operation of leading backward heat dissipation, so that the temperature in the cooling air passage is further reduced and the airflow velocity in the cooling air passage is improved;
2. Through setting up first spacer block, second spacer block and air guide mouth, can separate first heat dissipation air flue, second heat dissipation air flue into a plurality of even regions to dispel the heat to every region, still drive the swing leaf of every air guide mouth department through drive assembly and reciprocate the swing, guide the homogeneity when so improving the heat dissipation to the air current, and drive thermal-insulated section of thick bamboo rotation through first driving motor, can scrape the dust that high-voltage winding, low-voltage winding surface is attached, effectively ensured radiating efficiency and long-time life.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objects and other advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
FIG. 1 is a schematic diagram of a transformer in the background of the invention;
FIG. 2 is a schematic diagram of the overall structure of a transformer according to an embodiment of the present invention;
FIG. 3 is a side view of the overall structure of a transformer in an embodiment of the invention;
FIG. 4 is a partial cross-sectional view of the internal structure of a transformer body according to an embodiment of the present invention;
FIG. 5 is an enlarged schematic view of the invention at A in FIG. 2;
FIG. 6 is a schematic view of a heat insulating cylinder according to an embodiment of the present invention;
Fig. 7 is a partial cross-sectional view at B-B in fig. 6.
The figures are marked as follows:
The transformer comprises a transformer body 1, an iron core 101, a high-voltage winding 102, a low-voltage winding 103, a connecting bracket 2, a clamping plate 201, a split bolt 202, a cushion block 3, a cooling air passage 4, a heat insulation cylinder 5, a first heat dissipation air passage 6, a second heat dissipation air passage 7, a first air guide shell 8, a second air guide shell 9, a first air guide opening 10, a first heat dissipation fan 11, a second heat dissipation fan 12, a first separation block 13, a second separation block 14, a swing blade 15, a first driving motor 16, a driving rod 17, a second driving motor 18, a cam 19, a movable ring 20 and a connecting rod 21.
Detailed Description
As shown in figures 1 to 7 of the drawings,
An energy-saving dry-type transformer comprises three transformer bodies 1 which are sequentially arranged along a horizontal straight line and connecting brackets 2 fixedly arranged at the upper end and the lower end of the transformer bodies, each connecting bracket 2 consists of two U-shaped clamping plates 201 and a split bolt 202 used for connecting the two clamping plates 201, each transformer body 1 comprises an iron core 101, and a low-voltage winding 103 and a high-voltage winding 102 which are sequentially sleeved outside the iron core 101 from inside to outside, wherein four cushion blocks 3 are uniformly arranged between the clamping plates 201 and each transformer body 1 at intervals circumferentially and are separated, the cushion blocks 3 are fixed on the clamping plates 201 through bolts and nuts, the low-voltage winding 103 and the high-voltage winding 102 are separated and form annular cooling air passages 4, vertical heat insulation cylinders 5 are coaxially arranged in the cooling air passages 4, the upper end and the lower end of each heat insulation cylinder 5 respectively extend out of the two ends of the corresponding cooling air passages 4, the heat insulation device is rotationally connected with corresponding cushion blocks 3, clamping grooves matched with heat insulation cylinders 5 are formed in one side surface of each cushion block 3, the corresponding heat insulation cylinders 5 are jointly fixed by eight cushion blocks 3, surfaces of the heat insulation cylinders 5, low-voltage windings 103 and high-voltage windings 102 are arranged at intervals, annular first heat dissipation air passages 6 are jointly formed between the outer ring surfaces of the heat insulation cylinders 5 and the surfaces of the high-voltage windings 102, annular second heat dissipation air passages 7 are jointly formed between the inner ring surfaces of the heat insulation cylinders 5 and the surfaces of the low-voltage windings 103, annular first air guide shells 8 are arranged on the outer ring surfaces of the heat insulation cylinders 5 at intervals, a first annular cavity is jointly formed between the first air guide shells 8 and the heat insulation cylinders 5, a plurality of air guide ports 10 communicated with the inside of the annular cavity are formed in the circumferential side surfaces, close to the high-voltage windings 102, of the first annular cavity, the first heat dissipation air flue 6 is communicated with the first heat dissipation fan 11 jointly, annular second air guide shells 9 are arranged on the inner ring surface of the heat insulation cylinder 5 at intervals, a closed second annular chamber is formed between the second air guide shells 9 and the heat insulation cylinder 5 jointly, an air guide opening 10 is formed in the surface, close to the low-voltage winding 103, of the second air guide shells 9, the second annular chamber and the second heat dissipation air flue 7 are communicated with the second heat dissipation fan 12 jointly, the first heat dissipation fan 11 and the second heat dissipation fan 12 are fixed on the surface of the connecting support 2 through bolts, wherein air flow generated by the first heat dissipation fan 11 is upward along the axis of the heat insulation cylinder 5 and passes through the first heat dissipation air flue 6, and air flow generated by the second heat dissipation fan 12 is downward along the axis of the heat insulation cylinder 5 and passes through the second heat dissipation air flue 7 to dissipate heat on the surfaces of the corresponding high-voltage winding 102 and low-voltage winding 103 respectively.
As shown in the combined drawing, the cooling air passage 4 is divided into a first heat dissipation air passage 6 and a second heat dissipation air passage 7 through the heat insulation cylinder 5, air flow blown out by the first heat dissipation fan 11 enters from the lower end of the heat insulation cylinder 5, passes through the first heat dissipation air passage 6 upwards along the axis of the heat insulation cylinder 5, flows out from the top end of the heat insulation cylinder 5, and the air flow can take away heat on the surface of the high-voltage winding 102; the air flow blown out by the second heat dissipation fan 12 is opposite to the air flow blown out by the first heat dissipation fan 11, and enters from the upper end of the heat insulation cylinder 5, the air flow can take away the heat on the surface of the low-voltage winding 103, and the heat on the surfaces of the high-voltage winding 102 and the low-voltage winding 103 can be respectively taken away by two air flows with different opposite directions; in addition, the surface of the heat insulation cylinder 5 is provided with the first air guide shell 8, the surface of the first air guide shell 8 is provided with the air guide port 10 facing the high-voltage winding 102, a part of air flow blown out by the first heat dissipation fan 11 enters the first annular chamber and flows out from the air guide port 10, and the air flow flowing out from the air guide port 10 blows to the surface of the corresponding high-voltage winding 102 so as to take away the heat on the surface of the corresponding high-voltage winding, and because part of air flow of the first heat dissipation fan 11 directly enters the first annular chamber and does not exchange heat with the first heat dissipation air channel 6, the temperature of the air flow blown out from the first annular chamber is not greatly different from the temperature entering the first annular chamber, the surface of the high-voltage winding 102 can be effectively cooled, and the temperature difference between the upper end and lower end of the air flow when passing through the high-voltage winding 102 can be effectively improved, wherein the first air guide shell 8 occupies a part of the first annular chamber, so that the flow speed of the air flow entering the first heat dissipation air channel 6 can be accelerated, the heat dissipation efficiency can be further improved, and the heat dissipation principle is similar to that the second heat dissipation air guide shell 9 is arranged in the first annular chamber, the second heat dissipation air guide shell 9 and the heat dissipation air channel 6 is not similar to the heat dissipation principle and the heat dissipation air channel 6, and the heat dissipation principle is similar to the heat dissipation principle;
Through the setting of two opposite directions and mutually noninterfere's air current can be respectively to high-voltage winding 102, low-voltage winding 103 cooling, prevent heat exchange, effectively improve dry-type transformer's radiating efficiency, and through first air guide casing 8, second air guide casing 9 and air guide mouth 10, can further improve the temperature difference of air current's entrance point and exit, further strengthened the air current and to high-voltage winding 102, low-voltage winding 103's radiating efficiency, prevent that the heat from piling up, have more energy-conserving, high-efficient and clear radiating effect.
In this embodiment, the peripheral side surface of the first air guiding housing 8 facing the high-voltage winding 102 is provided with a plurality of vertically arranged first separation blocks 13, the plurality of first separation blocks 13 are uniformly spaced around the vertical axis of the first air guiding housing 8, one end of each first separation block 13 far away from the first air guiding housing 8 is abutted against the surface of the high-voltage winding 102, and a plurality of air guiding ports 10 between any two adjacent first separation blocks 13 are spaced along the vertical direction; the surface of the second air guide shell 9 facing the low-voltage winding 103 is provided with a plurality of vertically arranged second partition blocks 14, the second partition blocks 14 are uniformly arranged at intervals around the vertical axis of the second air guide shell 9, one side surface of each second partition block 14 is abutted against the surface of the low-voltage winding 103, and a plurality of air guide ports 10 between any two adjacent second partition blocks 14 are arranged at intervals along the vertical direction.
As shown in the combined drawing, by arranging a plurality of first separation blocks 13, the area between the first air guide shell 8 and the inner side surface of the high-voltage winding 102 can be uniformly separated into a plurality of areas with equal volume, when the air flow blown by the first heat dissipation fan 11 enters the first heat dissipation air channel 6, the plurality of first separation blocks 13 can uniformly separate the entering air flow, the entering air flow can be guided and the flow speed of the air flow can be increased, the air flow blown by the air guide opening 10 is arranged between two adjacent first separation blocks 13, the temperature of the air flow blown by the air guide opening 10 is constant and smaller than the temperature in the first heat dissipation air channel 6, the heat dissipation of the surface of the high-voltage winding 102 between the two first separation blocks 13 can be quickly carried out, and the air flow entering from the first heat dissipation air channel 6 can accelerate the heat dissipation efficiency of the air flow discharged from the air guide opening 10, so that the heat accumulation is prevented, and finally the heat dissipation efficiency of the surface of the high-voltage winding 102 is effectively improved; the second spacer 14 provided in the second air guiding housing 9 has a similar effect as the first spacer 13 and is not described in detail herein.
In this embodiment, each air guide port 10 is movably provided with a plurality of swing blades 15, the plurality of swing blades 15 in the air guide port 10 are uniformly arranged at intervals along the vertical direction, each swing blade 15 is rotatably connected to the surfaces of the first air guide shell 8 and the second air guide shell 9, each swing blade 15 is connected with a driving component for driving the swing blades to reciprocate in the vertical plane, the driving component comprises a plurality of connecting rods 21 which are vertically arranged, each connecting rod 21 is hinged with the corresponding plurality of swing blades 15, the top end of each connecting rod 21 extends out of the heat insulation cylinder 5 and is fixedly connected with a movable ring 20, a spring which is abutted between the heat insulation cylinder 5 and the surface of the movable ring 20 is sleeved on the outer surface of each connecting rod 21, the side surface of each cushion block 3 is fixedly connected with a cam 19 which is abutted to the surface of the movable ring 20 through a bolt, and a second driving motor 18 which is connected with the cam 19, drives the movable ring 20 to reciprocate along the vertical direction and indirectly drives each swing blade 15 to reciprocate in the vertical direction, and the second driving motor 18 drives the air flow in the annular cavity 10 through the annular driving support 2 and the annular air guide port 10 when passing through the annular air guide port 10.
The cam 19 is driven to rotate by the second driving motor 18, so that the cam 19 is in reciprocating intermittent abutting connection with the surface of the movable ring 20 and is matched with the spring, each connecting rod 21 is made to reciprocate along the vertical direction, each swinging blade 15 is driven to reciprocate in the vertical plane, air flow blown out of the air guide port 10 is guided, the coverage area of the air flow can be further increased, the heat dissipation dead angle is reduced, and the heat dissipation efficiency is improved.
In this embodiment, every the one end surface of thermal-insulated section of thick bamboo 5 wears out cooling air flue 4 and is connected with and drives its rotatory first driving motor 16 around vertical axis, first driving motor 16 passes through the bolt fastening and sets up on the linking bridge 2 surface, is equipped with drive assembly between three thermal-insulated section of thick bamboo 5 and the first driving motor 16, and drive assembly includes transfer line 17 and three ring gear, every the lower extreme outer lane surface of thermal-insulated section of thick bamboo 5 all is connected with the ring gear through the bolt fastening, and transfer line 17 level sets up in the below of thermal-insulated section of thick bamboo 5, and the one end of transfer line 17 pass a plurality of corresponding cushion 3 and rotate with it and be connected, and the screw thread of mutually supporting with three ring gear is seted up on the week side surface of transfer line 17, and one end and the first driving motor 16 of transfer line 17 pass through the bevel gear group and carry out the transmission with first driving motor 16 and are connected.
In combination with the illustration, the first driving motor 16 can drive the three heat insulation cylinders 5 to rotate around the vertical axes thereof through the transmission shaft, and as the surfaces of the first separation blocks 13 and the second separation blocks 14 are respectively abutted against the surfaces of the high-voltage winding 102 and the low-voltage winding 103, when the heat insulation cylinders 5 rotate, each first separation block 13 and each second separation block 14 can be synchronously driven to rotate, dust attached to the surfaces of the low-voltage winding 103 and the high-voltage winding 102 is scraped, dust is prevented from accumulating on the surfaces of the heat insulation cylinders to influence the heat dissipation efficiency, and the heat dissipation stability and the service life are ensured.
In this embodiment, on the horizontal plane, each of the first partition blocks 13 and the second partition blocks 14 are alternately arranged along the annular direction at intervals, so that heat exchange between the first heat dissipation air passages 6 and the second heat dissipation air passages 7 at two sides of the heat insulation cylinder 5 can be reduced to a certain extent.
In this embodiment, the outlet ends of the first heat dissipation fan 11 and the second heat dissipation fan 12 are both connected with a cooling component, and the cooling component is fixedly disposed on the surface of the connection bracket 2.
The cooling component can adopt a semiconductor refrigeration sheet or a copper heat pipe, a heat radiation fin and other modes adopted by a comparison document in the background art to cool the air flow blown out by the first heat radiation fan 11 and the second heat radiation fan 12, so that the air flow is lower than the ambient temperature, and the cooled air flow enters the transformer body 1 again, so that the heat radiation efficiency of the transformer body 1 can be further improved.
In this embodiment, a plurality of through channels (not shown in the drawing) for heat insulation are formed in the heat insulation cylinder 5, each through channel is vertically disposed, and two ends of each through channel respectively pass through the upper and lower end surfaces of the heat insulation cylinder 5, so that the heat insulation efficiency of the heat insulation cylinder 5 can be improved.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides an energy-saving dry-type transformer, includes transformer body (1) and fixed linking bridge (2) that set up upper and lower both ends thereof, transformer body (1) include iron core (101) and from inside to outside cover in proper order establish low-voltage winding (103) and high-voltage winding (102) in the iron core (101) outside, low-voltage winding (103) and high-voltage winding (102) interval and constitution annular cooling air flue (4), its characterized in that: the cooling air flue (4) is internally and coaxially provided with a vertically arranged heat insulation cylinder (5), the heat insulation cylinder (5) is fixedly arranged on a connecting bracket (2), the surface of the heat insulation cylinder (5) and the surfaces of a low-voltage winding (103) and a high-voltage winding (102) are arranged at intervals, an annular first heat dissipation air flue (6) is jointly formed between the outer ring surface of the heat insulation cylinder (5) and the surface of the high-voltage winding (102), an annular second heat dissipation air flue (7) is jointly formed between the inner ring surface of the heat insulation cylinder (5) and the surface of the low-voltage winding (103), an annular first air guide shell (8) is arranged on the outer ring surface of the heat insulation cylinder (5) at intervals, an annular first annular chamber is jointly formed between the first air guide shell (8) and the heat insulation cylinder (5), a plurality of air guide openings (10) communicated with the inner side surfaces of the first annular chamber are formed on the periphery of the first air guide shell (8) close to the high-voltage winding (102), an annular second air guide shell (9) is jointly formed between the annular second air guide shell (9) and the annular air guide shell (9) close to the inner ring surface of the heat insulation cylinder (5), the second annular chamber and the second radiating air passage (7) are communicated with a second radiating fan (12) together, and the first radiating fan (11) and the second radiating fan (12) are fixed on the surface of the connecting support (2), wherein air flows generated by the first radiating fan (11) and the second radiating fan (12) flow through the first radiating air passage (6) and the second radiating air passage (7) along different directions up and down respectively and radiate heat on the surfaces of the corresponding high-voltage winding (102) and the corresponding low-voltage winding (103) respectively.
2. An energy efficient dry-type transformer according to claim 1, characterized in that: the first air guide shell (8) is provided with a plurality of vertically arranged first separation blocks (13) towards the peripheral side surface of the high-voltage winding (102), the plurality of first separation blocks (13) are uniformly arranged at intervals around the vertical axis of the first air guide shell (8), one end, far away from the first air guide shell (8), of each first separation block (13) is abutted against the surface of the high-voltage winding (102), and a plurality of air guide ports (10) between any two adjacent first separation blocks (13) are arranged at intervals along the vertical direction; the surface of the second air guide shell (9) facing the low-voltage winding (103) is provided with a plurality of vertically arranged second partition blocks (14), the second partition blocks (14) are uniformly arranged at intervals around the vertical axis of the second air guide shell (9), one side surface of each second partition block (14) is abutted to the surface of the low-voltage winding (103), and a plurality of air guide ports (10) between any two adjacent second partition blocks (14) are arranged at intervals along the vertical direction.
3. An energy efficient dry transformer according to claim 2, characterized in that: every all the activity of air guide mouth (10) department is equipped with a plurality of swing leaves (15), and a plurality of swing leaves (15) in air guide mouth (10) set up along vertical direction even interval, every swing leaf (15) all rotate and connect on first air guide casing (8), second air guide casing (9) surface, every swing leaf (15) all are connected with the drive assembly who drives its reciprocal wobbling in vertical plane, the drive piece is fixed on linking bridge (2) surface, wherein, when the air current in first annular cavity, the second annular cavity is through air guide mouth (10), every swing leaf (15) makes the air current of air guide mouth (10) department at the reciprocal wobbling in vertical plane under the drive of drive assembly.
4. An energy efficient dry transformer according to claim 3, wherein: one end surface of the heat insulation cylinder (5) penetrates out of the cooling air passage (4) and is connected with a first driving motor (16) for driving the heat insulation cylinder to rotate around a vertical axis, and the first driving motor (16) is fixedly arranged on the surface of the connecting support (2).
5. An energy efficient dry-type transformer according to claim 4, wherein: on the horizontal plane, each first separation block (13) and each second separation block (14) are arranged in a staggered mode along the annular direction.
6. An energy efficient dry-type transformer according to claim 5, wherein: the outlet ends of the first radiating fan (11) and the second radiating fan (12) are respectively communicated with a cooling component, the cooling component is fixedly arranged on the surface of the connecting bracket (2).
7. An energy efficient dry-type transformer according to claim 6, wherein: the inside of a plurality of thermal-insulated penetrating channel that are used for thermal-insulated has been seted up to thermal-insulated section of thick bamboo (5), and the equal vertical setting of every penetrating channel just runs through the upper and lower both ends face of thermal-insulated section of thick bamboo (5) respectively at the both ends of penetrating the passageway.
Priority Applications (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119964935A (en) * | 2025-02-11 | 2025-05-09 | 宜兴市兴益特种变压器有限公司 | Compound magnetic voltage regulator |
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| JPH0817645A (en) * | 1994-06-28 | 1996-01-19 | Toshiba Corp | Gas insulation transformer |
| JP2008153293A (en) * | 2006-12-14 | 2008-07-03 | Komatsu Ltd | Transformer |
| JP2012212822A (en) * | 2011-03-31 | 2012-11-01 | Daihen Corp | Dry-type transformer |
| KR20180029755A (en) * | 2016-09-13 | 2018-03-21 | 삼일변압기 주식회사 | A Cooling Apparatus for Transformer |
| CN217426505U (en) * | 2022-06-14 | 2022-09-13 | 柳州索能特种变压器有限责任公司 | Heat dissipation structure of dry-type transformer |
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2024
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0817645A (en) * | 1994-06-28 | 1996-01-19 | Toshiba Corp | Gas insulation transformer |
| JP2008153293A (en) * | 2006-12-14 | 2008-07-03 | Komatsu Ltd | Transformer |
| JP2012212822A (en) * | 2011-03-31 | 2012-11-01 | Daihen Corp | Dry-type transformer |
| KR20180029755A (en) * | 2016-09-13 | 2018-03-21 | 삼일변압기 주식회사 | A Cooling Apparatus for Transformer |
| CN217426505U (en) * | 2022-06-14 | 2022-09-13 | 柳州索能特种变压器有限责任公司 | Heat dissipation structure of dry-type transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN119964935A (en) * | 2025-02-11 | 2025-05-09 | 宜兴市兴益特种变压器有限公司 | Compound magnetic voltage regulator |
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| CN119008175B (en) | 2025-05-16 |
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