CN107424756B - Heat abstractor of oil immersed transformer - Google Patents
Heat abstractor of oil immersed transformer Download PDFInfo
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- CN107424756B CN107424756B CN201710334640.XA CN201710334640A CN107424756B CN 107424756 B CN107424756 B CN 107424756B CN 201710334640 A CN201710334640 A CN 201710334640A CN 107424756 B CN107424756 B CN 107424756B
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- oil
- oil inlet
- transformer
- inlet pipe
- pipe
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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
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
-
- 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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Transformer Cooling (AREA)
Abstract
The utility model provides a heat abstractor of oil-immersed transformer, includes oil tank and radiator, the radiator includes transformer oil feed pipe, transformer returns oil pipe and connects a plurality of fin between transformer oil feed pipe, transformer play oil pipe to every group fin all is linked together with transformer oil feed pipe and transformer play oil pipe, the fin be S type fin, transformer oil feed pipe includes first oil feed pipe and second oil feed pipe, the second oil feed pipe nestification is intraductal at first oil feed, first oil feed pipe both ends constitute and seal, and the first oil inlet of being connected with the oil tank has been seted up to the upper end, second oil feed pipe both ends constitute and open, and the second oil inlet that the width is less than first oil inlet has been seted up to the middle part, and the second branch mouth corresponding with the first shunt opening of first oil feed pipe bottom is seted up to the bottom, and the second branch mouth is linked together with the inlet of S type fin. The invention solves the problem of uneven oil quantity distribution in the radiating fin, and effectively improves the radiating effect of the radiator.
Description
Technical Field
The invention belongs to the field of heat dissipation of transformers, and particularly relates to a heat dissipation device of an oil-immersed transformer.
Background
The transformer is operated to generate heat, which comes from two aspects, namely iron loss, namely heat generated by the lack of eddy current in the transformer core, and heat generated by the load current flowing through the transformer winding, wherein the heat generation amount is proportional to the square of the current, and the heat is emitted in time, otherwise, the transformer is damaged, so that the transformer needs to be provided with a radiator.
The existing transformers often have the following disadvantages: firstly, the heat dissipation effect is poor, because after the high-temperature oil is introduced into the oil inlet pipe of the radiator through the oil outlet pipe of the transformer, the oil is theoretically uniformly distributed to all the radiating fins which are assembled between the oil inlet pipe and the oil return pipe of the same radiator through the oil inlet pipe of the radiator, however, the situation is not the same, the smaller the quantity of the oil which is obtained by the radiating fins which are far away from the oil inlet pipe and the oil return pipe of the radiator is, the weaker the heat dissipation effect is, so that the integral effect of each group of radiating fins cannot be fully exerted, namely the heat dissipation effect cannot be fully embodied, and the oil temperature which is returned into the transformer body is insufficient to be reduced to a satisfactory degree; secondly, physical parameters of oil used in the transformer, viscosity is greatly affected by temperature in the flowing process of the oil, and viscosity is greatly increased along with temperature reduction, so that flowing resistance of the oil in the radiator is rapidly increased, a flowing boundary layer and a thermal boundary layer of the oil in the radiator are rapidly developed due to continuous increase of viscosity and existence of viscosity force, and the flowing and heat transfer conditions of the oil are more complicated due to existence of the boundary layer, so that flowing speed of the oil is reduced, oil quantity returned into the transformer body is seriously insufficient, and damage to the transformer body is easily caused.
Disclosure of Invention
The invention aims to provide a heat dissipation device of an oil immersed transformer with S-shaped heat dissipation fins and a nested oil inlet pipe, so as to solve the defects of the technical problems: if the radiator cannot be uniformly distributed to all the radiating fins assembled between the oil inlet pipe and the oil return pipe of the same radiator, the radiating fins cannot fully play the role of radiating, and the viscosity of oil is rapidly increased along with the reduction of temperature, so that the flow of the oil in the radiating fins is resisted.
The technical scheme of the invention is as follows: the utility model provides a heat abstractor of oil-immersed transformer, includes oil tank and radiator, the radiator includes transformer oil feed pipe, transformer returns oil pipe and connects a plurality of fin between transformer oil feed pipe, transformer play oil pipe to every group fin all is linked together with transformer oil feed pipe and transformer play oil pipe, the fin be S type fin, transformer oil feed pipe includes first oil feed pipe and second oil feed pipe, the second oil feed pipe nestification is intraductal at first oil feed, first oil feed pipe both ends constitute and seal, and the first oil inlet of being connected with the oil tank has been seted up to the upper end, second oil feed pipe both ends constitute and open, and the second oil inlet that the width is less than first oil inlet has been seted up to the middle part, and the second branch mouth corresponding with the first shunt opening of first oil feed pipe bottom is seted up to the bottom, and the second branch mouth is linked together with the inlet of S type fin.
Further preferably, each set of S-shaped fins has a plurality of bends.
Further preferably, the S-shaped radiating fin is provided with a metal fixing strip.
Further preferably, the metal fixing strips are perpendicular to the S-shaped radiating fins.
Further preferably, two ends of the second oil inlet pipe are welded on the inner wall of the first oil inlet pipe through metal brackets.
Further preferably, the width of the second oil inlet is smaller than 0.5-1.5mm of the first oil inlet.
Further preferably, the width of the first shunt opening is the same as that of the second shunt opening.
Aiming at the problems of high production cost, complex structure and unsatisfactory radiating effect of the existing transformer radiating device, the beneficial effects of the invention mainly comprise the following two aspects:
1. the high-temperature oil in the transformer gradually reduces from top to bottom in the process of passing through the radiating fins, meanwhile, the viscosity of the oil is rapidly increased from top to bottom, and the flow resistance of the oil in the radiating fins is also greatly increased, so that the recovery quantity of the oil in the transformer is insufficient, the working process of the transformer is influenced, the S-shaped radiating fins are formed by a plurality of curves, the radiating area and the cooling path of the transformer are increased, downward impact force is generated at the curves when the high-temperature oil flows due to the existence of the curves, the flow speed of the oil is effectively improved, the defect of insufficient oil return quantity in the transformer body due to high viscosity is overcome, and the oil temperature returned into the transformer body is reduced to a satisfactory degree;
2. the oil inlet pipe of the transformer is nested, the oil inlet pipe is divided into a first oil inlet pipe and a second oil inlet pipe, the second oil inlet pipe is nested in the first oil inlet pipe, the first oil inlet pipe and the second oil inlet pipe are respectively provided with a first oil inlet and a second oil inlet which are corresponding to each other, the width of the first oil inlet is larger than that of the second oil inlet, when high-temperature oil flows into the oil inlet pipe from the transformer body, a part of the high-temperature oil directly enters the second oil inlet pipe through the second oil inlet, and then flows into each group of S-shaped cooling fins through a second flow dividing port, a first flow dividing port and two open ends of the second oil inlet pipe in sequence, and the other part of the high-temperature oil flows between the first oil inlet pipe and the second oil inlet pipe along the outer wall of the second oil inlet pipe towards two ends and enters the S-shaped cooling fins through the first flow dividing port, so that the problem that the oil quantity of the cooling fins far from the transformer body is less is effectively solved, and the ideal effect of uniform dispersion is achieved;
in summary, compared with the prior art, the heat radiator has a simple structure, the heat radiating area of the heat radiator is increased by utilizing the S-shaped heat radiating fins, the problem of uneven oil quantity distribution in the heat radiating fins is solved by utilizing the nested structure of the oil inlet pipe, the heat radiating effect of the heat radiator is effectively improved, the power supply of enterprises and public institutions and vast users is ensured, the economic loss is reduced, and the influence on the life and production of people is reduced.
Drawings
Fig. 1 is a schematic diagram of a side structure of a heat dissipating device of an oil-immersed transformer
Fig. 2 is a schematic diagram of an oil inlet pipe structure of an oil immersed transformer
The marks in the figure: 1. s-shaped cooling fins, 2, transformer oil inlet pipes, 201, first oil inlet pipes, 2011, first oil inlets, 2012, first shunt ports, 202, second oil inlet pipes, 2021, second oil inlets, 2022, second shunt ports, 3, transformer oil outlet pipes, 4 and metal fixing strips.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purposes and the beneficial effects of the present invention easy to understand, the present invention is further described below in connection with the specific embodiments.
The heat dissipating device of the oil immersed transformer comprises the following specific embodiments: the radiator comprises a transformer oil inlet pipe 2, a transformer oil return pipe 3 and a plurality of radiating fins connected between the transformer oil inlet pipe 2 and the transformer oil outlet pipe 3, wherein each group of radiating fins is communicated with the transformer oil inlet pipe 2 and the transformer oil outlet pipe 3, the radiating fins are S-shaped radiating fins 1 formed by a plurality of curves, the radiating area and the cooling path of the transformer are increased, the high-temperature oil temperature is reduced to a satisfactory temperature, and the high-temperature oil flows to the curves to generate downward impact force due to the existence of the curves, so that the flow speed of the oil is effectively improved, the problem of insufficient oil return amount in the transformer body due to high viscosity is solved, and the oil temperature is reduced to a satisfactory degree;
the oil inlet pipe 2 of the transformer comprises a first oil inlet pipe 201 and a second oil inlet pipe 202, the second oil inlet pipe 202 is nested in the first oil inlet pipe 201, two ends of the first oil inlet pipe 201 are closed, a first oil inlet 2011 connected with an oil tank is formed at the upper end of the first oil inlet pipe, two ends of the second oil inlet pipe 202 are open, a second oil inlet 2021 with the width smaller than that of the first oil inlet 2011 is formed at the middle of the second oil inlet pipe, a second shunt 2022 corresponding to a first shunt port 2012 at the bottom end of the first oil inlet pipe 201 is formed at the bottom end of the second oil inlet pipe, and the second shunt 2022 is communicated with a liquid inlet of the S-shaped cooling fin 1, so that the problem that the quantity of oil split by the cooling fin far away from the transformer body is smaller is effectively solved, and an ideal uniform dispersion effect is achieved;
further optimizing, the S-shaped radiating fin 1 is provided with a metal fixing strip 4, so that unstable structure caused by deformation of the radiating fin at high temperature for a long time is prevented;
further optimizing, the metal fixing strips 4 are perpendicular to the S-shaped radiating fins 1;
further preferably, two ends of the second oil inlet pipe 202 are welded on the inner wall of the first oil inlet pipe 201 through metal brackets;
further optimizing, the width of the second oil inlet 2021 is smaller than 0.5-1.5mm of the first oil inlet 2011, and the arrangement ensures that high-temperature oil plays a role in diversion when entering the transformer oil inlet pipe 2, and finally the effect of uniform oil quantity distributed to the S-shaped cooling fins 1 is achieved;
further preferably, the width of the first shunt opening 2012 is the same as the second shunt opening 2022.
The working process of the invention comprises the following steps: the transformer oil inlet pipe is nested, the oil inlet pipe is divided into a first oil inlet pipe 201 and a second oil inlet pipe 202, the second oil inlet pipe 202 is nested in the first oil inlet pipe 201, when high-temperature oil flows into the oil inlet pipe from the transformer body, a part of the high-temperature oil directly enters the second oil inlet pipe 202 through a second oil inlet 2021, then flows into each group of S-shaped cooling fins 1 through a second split port 2022, a first split port 2012 and two open ends of the second oil inlet pipe 202 in sequence, and the other part of the high-temperature oil flows into the S-shaped cooling fins 1 formed by a plurality of curves along the outer wall of the second oil inlet pipe 202 due to the fact that the second oil inlet 2021 is smaller than the first oil inlet 2011, and finally flows back into the transformer body through the transformer oil return pipe 3.
The foregoing has outlined and described the main features, methods of use, basic principles, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that the above-described embodiments and descriptions are merely illustrative of the principles of the present invention, and that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The utility model provides a heat abstractor of oil-immersed transformer, includes oil tank and radiator, the radiator includes transformer oil feed pipe (2), transformer oil outlet pipe (3) and connects a plurality of fin between transformer oil feed pipe (2), transformer oil outlet pipe (3) to every group fin all is linked together its characterized in that with transformer oil feed pipe (2) and transformer oil outlet pipe (3): the cooling fin is an S-shaped cooling fin (1), the oil inlet pipe (2) of the transformer comprises a first oil inlet pipe (201) and a second oil inlet pipe (202), the second oil inlet pipe (202) is nested in the first oil inlet pipe (201), two ends of the first oil inlet pipe (201) are closed, a first oil inlet (2011) connected with an oil tank is formed in the upper end of the first oil inlet pipe, two ends of the second oil inlet pipe (202) are open, a second oil inlet (2021) with the width smaller than that of the first oil inlet (2011) is formed in the middle of the second oil inlet pipe, a second shunt opening (2022) corresponding to a first shunt opening (2012) at the bottom end of the first oil inlet pipe (201) is formed in the bottom end of the second shunt opening (2022) and is communicated with a liquid inlet of the S-shaped cooling fin (1);
the first oil inlet (2011) and the second oil inlet (2021) are coaxially arranged, the width of the first shunt opening (2012) is the same as that of the second shunt opening (2022), when high-temperature oil flows into the oil inlet pipe from the transformer body, one part of the high-temperature oil directly enters the second oil inlet pipe (202) through the second oil inlet (2021), then flows into each group of S-shaped cooling fins (1) through the second shunt opening (2022), the first shunt opening (2012) and the two ends of the second oil inlet pipe (202) in sequence, and the other part of the high-temperature oil can flow between the first oil inlet pipe (201) and the second oil inlet pipe (202) due to the fact that the second oil inlet (2021) is smaller than the first oil inlet (2011) and flows towards the two ends along the outer wall of the second oil inlet pipe (202) and enters the S-shaped cooling fins (1) through the first shunt opening (2012).
2. The heat dissipation device of an oil-immersed transformer as claimed in claim 1, wherein: each group of S-shaped cooling fins (1) consists of a plurality of curved lines.
3. The heat dissipation device of an oil-immersed transformer as claimed in claim 1, wherein: the S-shaped radiating fin (1) is provided with a metal fixing strip (4).
4. A heat sink for an oil immersed transformer as claimed in claim 3, wherein: the metal fixing strips (4) are perpendicular to the S-shaped radiating fins (1).
5. The heat dissipation device of an oil-immersed transformer as claimed in claim 1, wherein: and two ends of the second oil inlet pipe (202) are welded on the inner wall of the first oil inlet pipe (201) through metal brackets.
6. The heat dissipation device of an oil-immersed transformer as claimed in claim 1, wherein: the width of the second oil inlet (2021) is smaller than that of the first oil inlet (2011) by 0.5-1.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710334640.XA CN107424756B (en) | 2017-05-12 | 2017-05-12 | Heat abstractor of oil immersed transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710334640.XA CN107424756B (en) | 2017-05-12 | 2017-05-12 | Heat abstractor of oil immersed transformer |
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| Publication Number | Publication Date |
|---|---|
| CN107424756A CN107424756A (en) | 2017-12-01 |
| CN107424756B true CN107424756B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710334640.XA Active CN107424756B (en) | 2017-05-12 | 2017-05-12 | Heat abstractor of oil immersed transformer |
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| Country | Link |
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| CN (1) | CN107424756B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201673770U (en) * | 2010-06-01 | 2010-12-15 | 沈阳大型电力变压器维修有限公司 | Improved structure of finned radiator oil collecting tube for large transformer |
| CN202394650U (en) * | 2011-12-15 | 2012-08-22 | 江苏腾奇电力设备科技有限公司 | Finned radiator |
| CN203130293U (en) * | 2013-03-15 | 2013-08-14 | 北京联飞翔科技股份有限公司 | Fuel filter assembly |
| CN203982968U (en) * | 2014-08-11 | 2014-12-03 | 杭州钱联散热器有限公司 | Transformer radiator |
| CN204628932U (en) * | 2015-05-05 | 2015-09-09 | 常州苏润机械有限公司 | high strength oil collecting pipe |
| CN105304276A (en) * | 2014-06-05 | 2016-02-03 | 江苏圣塔电力设备有限公司 | Radiator |
| CN205050667U (en) * | 2015-11-04 | 2016-02-24 | 六安力达生产力促进中心有限公司 | Oil -immersed transformer |
| CN205069283U (en) * | 2015-11-06 | 2016-03-02 | 红旗集团温州变压器有限公司 | Oily formula fin subassembly and oil -immersed transformer thereof |
| CN205230726U (en) * | 2015-11-15 | 2016-05-11 | 重庆南瑞博瑞变压器有限公司 | Radiating device of transformer |
| CN205428646U (en) * | 2016-03-17 | 2016-08-03 | 温州凯唐电子科技有限公司 | Oil -immersed transformer |
| JP2017020847A (en) * | 2015-07-09 | 2017-01-26 | 株式会社日立製作所 | Oil leakage detection device of oil containing equipment |
-
2017
- 2017-05-12 CN CN201710334640.XA patent/CN107424756B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201673770U (en) * | 2010-06-01 | 2010-12-15 | 沈阳大型电力变压器维修有限公司 | Improved structure of finned radiator oil collecting tube for large transformer |
| CN202394650U (en) * | 2011-12-15 | 2012-08-22 | 江苏腾奇电力设备科技有限公司 | Finned radiator |
| CN203130293U (en) * | 2013-03-15 | 2013-08-14 | 北京联飞翔科技股份有限公司 | Fuel filter assembly |
| CN105304276A (en) * | 2014-06-05 | 2016-02-03 | 江苏圣塔电力设备有限公司 | Radiator |
| CN203982968U (en) * | 2014-08-11 | 2014-12-03 | 杭州钱联散热器有限公司 | Transformer radiator |
| CN204628932U (en) * | 2015-05-05 | 2015-09-09 | 常州苏润机械有限公司 | high strength oil collecting pipe |
| JP2017020847A (en) * | 2015-07-09 | 2017-01-26 | 株式会社日立製作所 | Oil leakage detection device of oil containing equipment |
| CN205050667U (en) * | 2015-11-04 | 2016-02-24 | 六安力达生产力促进中心有限公司 | Oil -immersed transformer |
| CN205069283U (en) * | 2015-11-06 | 2016-03-02 | 红旗集团温州变压器有限公司 | Oily formula fin subassembly and oil -immersed transformer thereof |
| CN205230726U (en) * | 2015-11-15 | 2016-05-11 | 重庆南瑞博瑞变压器有限公司 | Radiating device of transformer |
| CN205428646U (en) * | 2016-03-17 | 2016-08-03 | 温州凯唐电子科技有限公司 | Oil -immersed transformer |
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| CN107424756A (en) | 2017-12-01 |
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Address after: 467100 Chengdong Industrial Cluster, Jia County, Pingdingshan City, Henan Province Applicant after: PINGDINGSHAN TIANSHENG ELECTRIC CO.,LTD. Address before: 467100 Chengdong Industrial Cluster, Jia County, Pingdingshan City, Henan Province Applicant before: T-YOUNG ELECTRIC CO.,LTD. |
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