CN213340004U - Oil-immersed box-type transformer heat radiation structure - Google Patents
Oil-immersed box-type transformer heat radiation structure Download PDFInfo
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- CN213340004U CN213340004U CN202021852491.XU CN202021852491U CN213340004U CN 213340004 U CN213340004 U CN 213340004U CN 202021852491 U CN202021852491 U CN 202021852491U CN 213340004 U CN213340004 U CN 213340004U
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Abstract
The application relates to a heat dissipation structure of an oil-immersed box type transformer, which comprises a box body, wherein mineral oil is filled in the box body, three iron cores arranged in parallel are arranged in the box body, iron yokes are arranged at two ends of each iron core, the periphery of the iron core is sleeved with a coil winding, the side wall of the box body is provided with a plurality of heat exchangers for taking away the heat of the mineral oil in the box body, the heat exchanger comprises a plurality of cooling pipes which are arranged on the side wall of the box body in parallel, the cooling pipes are arranged in parallel with the horizontal plane, the cooling pipes are mutually communicated through communicating pipes, the cooling pipes and the communicating pipes are connected into an arch shape, the cooling pipes positioned at the uppermost side and the lowermost side are respectively mutually communicated with the box body through connecting pipes, and a circulating oil pump is arranged on the connecting pipe, and the circulating oil pump drives the mineral oil to move from top to bottom in the same circulating direction. This application has the effect that promotes oil-immersed transformer's heat dispersion and efficiency.
Description
Technical Field
The application relates to the field of transformer equipment, in particular to an oil-immersed box type transformer heat dissipation structure.
Background
Transformers are one of the main devices of power plants and substations. The transformer has the advantages that the transformer has multiple functions, the voltage can be increased to transmit electric energy to an electricity utilization area, and the voltage can be reduced to various levels of use voltage to meet the requirement of electricity utilization. The transformer can be divided into a dry type transformer and an oil immersed type transformer according to an insulating medium, wherein the oil immersed type transformer takes mineral oil as a main insulating medium and a cooling medium of the transformer, a main body element of the transformer is immersed into an oil tank filled with the mineral oil, and a wiring terminal is led out of the top of an oil tank cover.
Current oil-immersed transformer can produce heat formation high temperature at the course of the work, and behind the heat transfer for mineral oil, the box is passed through natural air cooling through transformer oil transfer again, however this kind of radiating mode not only the effect is relatively poor but also the radiating efficiency is lower for oil-immersed transformer is in the in-process trouble frequent appearance that uses, both influences the use, has the potential safety hazard again.
SUMMERY OF THE UTILITY MODEL
In order to promote the heat dispersion and the efficiency of oil-immersed transformer, this application provides an oil-immersed box transformer heat radiation structure.
The application provides a pair of oil-immersed box transformer heat radiation structure adopts following technical scheme:
the utility model provides an oil-immersed box transformer heat radiation structure, includes the box, the box intussuseption is filled with mineral oil, the inside iron core that is provided with three parallel arrangement of box, the both ends of iron core are provided with the yoke, the periphery cover of iron core is equipped with coil winding, be provided with a plurality of heat exchangers that are used for taking away the inside mineral oil heat of box on the lateral wall of box, the heat exchanger includes a plurality of cooling tubes of parallel arrangement on the box lateral wall, cooling tube and horizontal plane parallel arrangement, communicate each other through communicating pipe between the cooling tube, connect into the bow type between cooling tube and the communicating pipe, be located the cooling tube of the top and downside respectively through the connecting pipe with the box communicates each other, just be provided with the circulating oil pump on the connecting pipe, the same all for driving mineral oil from the last downstream.
By adopting the technical scheme, when the transformer works, more heat can be generated between the coil winding and the iron core, so that the stability in the box body is higher, at the moment, the heat generated by the coil winding and the iron core can be transferred to the mineral oil, then the circulating oil pump is started to pump the mineral oil with higher temperature in the box body out of the upper side of the box body, at the moment, the mineral oil with higher stability flows through the cooling pipe and the communicating pipe which are arranged in an arch shape, so that the mineral oil with higher temperature can rapidly take the heat out of the box body, and the temperature in the mineral oil can exchange heat with air longer by prolonging the moving path of the mineral oil in the cooling pipe, so that the mineral oil can be rapidly cooled; compared with a conventional heat dissipation scheme, the active heat dissipation scheme is more effective, so that the heat dissipation performance and efficiency of the oil-immersed transformer are improved.
Preferably, a plurality of cooling fans are arranged on the side wall of the box body, and the cooling fans are arranged on the lower side of the heat exchanger. And cooling air blown out by the cooling fan is arranged towards the heat exchanger.
Through adopting above-mentioned technical scheme, cooling fan's setting can further promote the heat exchange efficiency of heat exchanger, sets up cooling fan at the downside of heat exchanger simultaneously, and the reducible hot-air after absorbing the mineral oil heat blows and reduces the radiating effect of box self on the box.
Preferably, a plurality of fins are additionally arranged on the circumferential surface of each cooling tube, the fins are perpendicular to the axis of each cooling tube, and the fins between the adjacent upper and lower rows of cooling tubes are arranged in a staggered mode at equal intervals.
Through adopting above-mentioned technical scheme, the fin can further increase the heat transfer area between cooling tube and the air. Thereby further increasing the cooling efficiency of the mineral oil.
Preferably, the lower side of the box body is provided with a plurality of support rods for supporting the box body to be separated from the ground.
Through adopting above-mentioned technical scheme for have certain clearance between the diapire of box and the ground, thereby promote the air flow of box downside, make cooling fan's working effect better.
Preferably, the supporting rod is arranged in parallel with the horizontal plane, the vertical section of the supporting rod is arranged in a U shape, the opening of the supporting rod is arranged downwards, and the opening of the supporting rod is provided with a plurality of brake universal wheels.
Through adopting above-mentioned technical scheme, accessible brake universal wheel is convenient transports and installs the transformer, and then reduces staff's labor consumption.
Preferably, the box is provided with the damping pad on the diapire towards the bracing piece, the vertical cross-section of damping pad is trapezoidal setting, and the lateral wall of the broad of damping pad bonds each other with the lateral wall of box.
Through adopting above-mentioned technical scheme, the setting of damping pad can absorb the vibration that the transformer work produced to make the operation of transformer more stable, and then reduce the transformer and produce the higher thermal possibility of trouble production because of the vibration, prolong the life of transformer.
Preferably, a support column is arranged between the iron yoke of the bottom wall inside the box body and the side wall of the box body, a preset interval is reserved between the iron yoke and the side wall of the box body, and a preset interval is also reserved between the coil winding and the iron core.
Through adopting above-mentioned technical scheme, reduce the hindrance that the mineral oil in the box flows for the inside mineral oil of box can produce the circulation effect of preferred in the box under the pump-out of circulating oil pump, makes mineral oil can take more heats in the box.
Preferably, every group the upper and lower both sides of coil winding all are provided with the vortex circulating pump, the vortex circulating pump is located the space of yoke and box, the vortex circulating pump includes the casing and sets up the turbine in the casing, the casing pass through the connecting rod with the lateral wall interconnect of box, turbine and the coaxial setting of iron core, two turbines that are located both sides about same iron core revolve to all for making mineral oil can follow supreme circulatory motion down.
By adopting the technical scheme, mineral oil at the lower layer in the box body is attracted by the eddy current circulating pump at the lower side to push the interior of the coil winding upwards, takes away heat generated by the coil winding and the iron core due to work, rises, is attracted by the eddy current circulating pump at the upper side, diffuses towards the periphery at the upper layer in the box body, one part of the mineral oil enters the cooling pipe through the connecting pipe after being cooled through the pumping of the circulating oil pump, and then enters the lower side of the box body through the connecting pipe, and the other part of the mineral oil directly moves downwards to the lower layer in the box body and; meanwhile, mineral oil disturbed by the turbine in the vortex circulating pump can form upward movement vortex-shaped columnar fluid, so that the mineral oil flows more fully and uniformly in the box body.
To sum up, the application comprises the following beneficial technical effects:
1. the mineral oil can be rapidly cooled outside the box body through the heat exchanger, and an active heat dissipation scheme is more effective than a conventional heat dissipation scheme, so that the heat dissipation performance and efficiency of the oil-immersed transformer are improved;
2. the arrangement of the vibration damping pad can absorb vibration generated in the working process of the transformer, so that the operation of the transformer is more stable, the possibility of generating higher heat due to the failure of the transformer caused by vibration is further reduced, and the service life of the transformer is prolonged;
3. the setting of eddy current circulating pump can make mineral oil form the column fluid of upward movement vortex shape when external cooling for the mineral oil is abundant more and even in the flow of box, and then makes mineral oil can carry out the cooling effect of preferred to coil winding and iron core.
Drawings
Fig. 1 is a sectional view showing the internal structure of a case according to the present invention.
Fig. 2 is a schematic perspective view of the present application.
FIG. 3 is a schematic view of the fin and cooling tube of the present application.
Fig. 4 is a schematic view showing the structure of the vortex circulation pump.
In the figure, 1, a box body; 11. a tap; 12. an iron core; 13. an iron yoke; 14. a support pillar; 15. a coil winding; 16. a support bar; 17. braking the universal wheel; 18. a vibration damping pad; 2. a heat exchanger; 21. a cooling tube; 22. a fin; 23. a communicating pipe; 24. a connecting pipe; 25. a circulating oil pump; 26. a cooling fan; 27. a support; 3. a vortex circulation pump; 31. a housing; 32. a turbine; 33. a connecting rod.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
The embodiment of the application discloses oil-immersed box type transformer heat radiation structure. Referring to fig. 1 and 2, the oil-immersed box type transformer heat dissipation structure comprises a box body 1, wherein the box body 1 is a box type cube, mineral oil is filled in the box body 1, and a plurality of taps 11 which are mutually communicated inside the box body 1 are arranged on the upper side of the box body 1; three iron cores 12 arranged in parallel are arranged in the box body 1, the iron cores 12 are arranged perpendicular to the bottom wall of the box body 1, iron yokes 13 are arranged at two ends of each iron core 12, the iron yokes 13 are arranged parallel to the box body 1, and the end parts of the three iron cores 12 located on the same side are vertically and fixedly connected to the side wall of the same iron yoke 13; in this embodiment, two support columns 14 arranged in parallel are arranged between the iron yoke 13 located on the bottom wall inside the box body 1 and the side wall of the box body 1, the two support columns 14 are respectively located between the two iron cores 12, the support columns 14 are arranged in parallel with the iron cores 12, and two ends of each support column 14 are respectively fixedly connected with the side wall of the iron yoke 13 away from the iron cores 12 and the side wall of the box body 1, so that a preset distance is reserved between the iron yoke 13 and the side wall of the box body 1; the coaxial cover in periphery of iron core 12 is equipped with coil winding 15, also leaves between coil winding 15 and the iron core 12 and predetermines the interval, and the above-mentioned interval of reserving all is used for circulating mineral oil and dispels the heat.
Referring to fig. 2 and 3, two support bars 16 for supporting the cabinet 1 to be separated from the ground are provided at the lower side of the cabinet 1. The two support rods 16 are arranged in parallel, the support rods 16 are arranged in parallel with the horizontal plane, the vertical sections of the support rods 16 are arranged in a U shape, the openings of the support rods 16 are arranged downwards, two brake universal wheels 17 are fixedly connected in the openings of the support rods 16, and the two brake universal wheels 17 are respectively arranged close to the end parts of the support rods 16; the bottom wall of the box body 1 facing the supporting rod 16 is provided with a damping pad 18, the vertical section of the damping pad 18 is in a trapezoidal arrangement, the wider side wall of the damping pad 18 is mutually bonded with the side wall of the box body 1, and the narrower side wall of the damping pad 18 is mutually bonded with the side wall of the supporting rod 16.
Referring to fig. 2 and 3, in this embodiment, two sets of heat exchangers 2 for taking away heat of mineral oil inside the box 1 are disposed on a side wall of the box 1, and the two heat exchangers 2 are respectively located on two longer side walls of the box 1; the heat exchanger 2 comprises four cooling tubes 21 arranged on the side wall of the box body 1 in parallel, the cooling tubes 21 are arranged in parallel with the horizontal plane, a plurality of fins 22 are additionally arranged on the circumferential surface of the cooling tubes 21, and the fins 22 between the adjacent upper and lower rows of cooling tubes 21 are arranged in a staggered mode at equal intervals, so that the heat exchange area and the heat exchange efficiency are greatly improved; the adjacent cooling pipes 21 are mutually communicated through the communicating pipes 23, the four cooling pipes 21 and the three communicating pipes 23 are connected into an arch shape, the cooling pipes 21 positioned at the uppermost side and the lowermost side are mutually communicated with the inside of the box body 1 through the connecting pipes 24 respectively, the connecting pipes 24 are provided with circulating oil pumps 25, and the circulating directions of the circulating oil pumps 25 are the same and are all used for driving mineral oil to move from top to bottom.
Referring to fig. 2 and 3, three cooling fans 26 located on the same plane are disposed on the lower side of the heat exchanger 2, the cooling fans 26 are disposed in parallel with the horizontal plane, the cooling fans 26 are disposed on the lower side of the heat exchanger 2, the cooling fans 26 are fixedly connected to the side walls of the vibration damping pads 18 through brackets 27, and cooling air blown by the cooling fans 26 is directed toward the heat exchanger 2.
When the transformer works, more heat can be generated between the coil winding 15 and the iron core 12, so that the stability in the box body 1 is higher, at the moment, the heat generated by the coil winding 15 and the iron core 12 can be transferred to the mineral oil, then the circulating oil pump 25 is started to pump the mineral oil with higher temperature in the box body 1 out of the upper side of the box body 1, at the moment, the mineral oil with higher stability flows through the cooling pipe 21 and the communicating pipe 23 which are arranged in an arch shape, so that the mineral oil with higher temperature can rapidly take the heat out of the box body 1, and the temperature in the mineral oil can be subjected to longer heat exchange with air by prolonging the moving path of the mineral oil in the cooling pipe 21, so that the mineral oil can be rapidly cooled; simultaneously turning on the cooling fan 26 to promote air flow between the fins 22 further promotes the heat exchange efficiency of the heat exchanger 2.
Referring to fig. 1 and 4, the upper side and the lower side of each group of coil windings 15 are both provided with a vortex circulating pump 3, and the vortex circulating pumps 3 are positioned in a gap between an iron yoke 13 and a box body 1; vortex circulating pump 3 includes casing 31 and the turbine 32 of setting in casing 31, and casing 31 passes through connecting rod 33 and the lateral wall interconnect of box 1, and turbine 32 and the coaxial setting of iron core 12, two turbines 32 that are located same iron core 12 upper and lower both sides revolve to the same all for making mineral oil can follow up carry out the circulatory motion down. Mineral oil at the lower layer in the box body 1 is attracted by the eddy current circulating pump 3 at the lower side to push the interior of the coil winding 15 upwards, takes away heat generated by the operation of the coil winding 15 and the iron core 12, then rises, is attracted by the eddy current circulating pump 3 at the upper side, and diffuses to the periphery at the upper layer in the box body 1, wherein one part of the mineral oil enters the cooling pipe 21 through the pumping of the circulating oil pump 25 to be cooled and then enters the lower side of the box body 1 through the connecting pipe 24, and the other part of the mineral oil directly moves downwards to the lower layer in the box body 1 and is attracted by the eddy current circulating; meanwhile, the mineral oil which is disturbed by the turbine 32 in the vortex circulating pump 3 can form a columnar fluid in an upward movement vortex shape, so that the flow of the mineral oil in the box body 1 is more sufficient and uniform.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. The utility model provides an oil-immersed box transformer heat radiation structure, includes box (1), box (1) intussuseption is filled with mineral oil, box (1) inside is provided with three parallel arrangement's iron core (12), the both ends of iron core (12) are provided with yoke (13), the periphery cover of iron core (12) is equipped with coil winding (15), its characterized in that: the side wall of the box body (1) is provided with a plurality of heat exchangers (2) used for taking away heat of mineral oil in the box body (1), each heat exchanger (2) comprises a plurality of cooling pipes (21) which are arranged on the side wall of the box body (1) in parallel, the cooling pipes (21) are arranged in parallel with the horizontal plane, the cooling pipes (21) are communicated with each other through communicating pipes (23), the cooling pipes (21) and the communicating pipes (23) are connected into a bow shape, the cooling pipes (21) positioned at the uppermost side and the lowermost side are communicated with the box body (1) through connecting pipes (24) respectively, circulating oil pumps (25) are arranged on the connecting pipes (24), and the circulating directions of the circulating oil pumps (25) are the same and are all used for driving the mineral oil to move from top to; a plurality of support rods (16) used for supporting the box body (1) to be separated from the ground are arranged on the lower side of the box body (1); the supporting rod (16) is arranged in parallel with the horizontal plane, the vertical section of the supporting rod (16) is U-shaped, the opening of the supporting rod (16) is arranged downwards, and a plurality of brake universal wheels (17) are arranged on the opening of the supporting rod (16); the damping pad (18) is arranged on the bottom wall of the box body (1) facing the supporting rod (16), the vertical section of the damping pad (18) is in a trapezoidal arrangement, and the wide side wall of the damping pad (18) is bonded with the side wall of the box body (1).
2. The oil-filled box type transformer heat dissipation structure of claim 1, wherein: the side wall of the box body (1) is provided with a plurality of cooling fans (26), the cooling fans (26) are located on the lower side of the heat exchanger (2), and cooling air blown out by the cooling fans (26) is arranged towards the heat exchanger (2).
3. The oil-filled box type transformer heat dissipation structure of claim 1, wherein: the peripheral surface of each cooling tube (21) is additionally provided with a plurality of fins (22), the fins (22) are perpendicular to the axis of each cooling tube (21), and the fins (22) between the adjacent upper and lower rows of cooling tubes (21) are arranged in a staggered mode at equal intervals.
4. The oil-filled box type transformer heat dissipation structure of claim 1, wherein: be located be provided with between the lateral wall of iron yoke (13) of the inside diapire of box (1) and box (1) support column (14), all leave between the lateral wall of iron yoke (13) and box (1) and preset the interval, just also leave between coil winding (15) and iron core (12) and preset the interval.
5. The oil-filled box type transformer heat dissipation structure of claim 4, wherein: every group the upper and lower both sides of coil winding (15) all are provided with eddy current circulating pump (3), eddy current circulating pump (3) are located the space of yoke (13) and box (1), eddy current circulating pump (3) include casing (31) and set up turbine (32) in casing (31), casing (31) through connecting rod (33) with the lateral wall interconnect of box (1), turbine (32) and iron core (12) coaxial setting, two turbines (32) that are located both sides about same iron core (12) revolve to the same all for making mineral oil can follow supreme circulatory motion down.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021852491.XU CN213340004U (en) | 2020-08-29 | 2020-08-29 | Oil-immersed box-type transformer heat radiation structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021852491.XU CN213340004U (en) | 2020-08-29 | 2020-08-29 | Oil-immersed box-type transformer heat radiation structure |
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| CN213340004U true CN213340004U (en) | 2021-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115691953A (en) * | 2022-11-03 | 2023-02-03 | 浙江江山变压器股份有限公司 | Heat radiation structure of oil-immersed transformer |
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2020
- 2020-08-29 CN CN202021852491.XU patent/CN213340004U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115691953A (en) * | 2022-11-03 | 2023-02-03 | 浙江江山变压器股份有限公司 | Heat radiation structure of oil-immersed transformer |
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