CN203706791U - Novel energy-saving finned radiator for transformers - Google Patents
Novel energy-saving finned radiator for transformers Download PDFInfo
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- CN203706791U CN203706791U CN201320695875.9U CN201320695875U CN203706791U CN 203706791 U CN203706791 U CN 203706791U CN 201320695875 U CN201320695875 U CN 201320695875U CN 203706791 U CN203706791 U CN 203706791U
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- radiator
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- conserving
- oil duct
- gilled radiator
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Abstract
The utility model discloses a novel energy-saving finned radiator for transformers. A plurality of cooling fin surface oil channels are distributed on the surface of the radiator; the two sides and the middles of the cooling fin surface oil channels form an eddy generator in a variable cross section manner; part of the diameter of the eddy generator is reduced from the two sides to the middle; the width of the cooling fin surface oil channels ranges from 10 mm to 100 mm. Through adopting the manner that the width of the cooling fin surface oil channels ranges from 10 mm to 100 mm, the oil distribution is changed, and heat dissipation is facilitated; as the eddy generator adopts a variable cross section structure from the two sides to the middle and the diameter is reduced, the heat transfer effect is greatly improved, the heat dissipation capability of the entire radiator in a self-cooling state is improved by 10% to 30%, chosen finned radiator units for high-capacity oil immersed power transformers are reduced, oil of transformers is reduced, manufacturing cost for transformers is reduced, and the horizontal space surrounding the transformer occupied by the radiator is reduced.
Description
Technical field
The utility model relates to radiator field, particularly relates to a kind of transformer novel energy-conserving gilled radiator.
Background technology
Gilled radiator is the main flow radiator that current oil-immersed power transformer, reactor are used, particularly high at criteria of noise control, is widely used on main product take self cooling (ONAN).But during for jumbo Transformer Selection gilled radiator, owing to affected by its thermal transmission coefficient, a fairly large number of gilled radiator, has taken transformer larger horizontal space around, has increased the manufacturing cost of transformer.As large oil immersed power transformer, 240MVA/220KV selects PC2800(2400)-26(2)/520(40 group), by the uniform high voltage side of transformer of collecting pipe and low-pressure side two ends.The horizontal volume of gilled radiator is larger, therefore how to improve the self cooling effect of radiator, select greater room is provided for large-scale power transformer cooling device, and reduce costs, become high pressure or ultrahigh pressure large-scale oil-immersed power transformer, reactor development urgent problem.
Summary of the invention
The technical problem that the utility model mainly solves is to provide a kind of transformer novel energy-conserving gilled radiator, can under natural draft condition, improve heat-sinking capability, reduce transformer oil, reduced transformer manufacturing cost, reduced radiator and taken transformer horizontal space around.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of transformer novel energy-conserving gilled radiator is provided, spreader surface is laid with multiple fin appearance oil ducts, on the surface of fin appearance oil duct, from both sides, extremely middle variable cross section-type forms a vortex generator, and the section diameter of described vortex generator arranges from large to small from both sides to centre.
In preferred embodiment of the utility model, the width range of described fin appearance oil duct is 10mm ~ 100mm.
In preferred embodiment of the utility model, described vortex generator both sides are two bulge-structures, form spill mouth windward between two bulge-structures.
In preferred embodiment of the utility model, each bulge clearance 30mm ~ 200mm is arranged in the surface of fin appearance oil duct.
In preferred embodiment of the utility model, described projection rule or the irregular surface that is arranged in fin appearance oil duct.
In preferred embodiment of the utility model, described fin appearance oil duct depth bounds be 8mm-15mm.
In preferred embodiment of the utility model, described radiator two ends are all the angle inclination of 0 ~ 15 ° take center line as starting point to dual-side.
In preferred embodiment of the utility model, the two ends of described radiator are provided with for connecting the crescent hole into, oil return pipe.
In preferred embodiment of the utility model, spaced apart by non-oil duct between each described fin appearance oil duct.
The beneficial effects of the utility model are: the utility model transformer has been made 10mm ~ 100mm on the width of fin oil duct difformity with novel energy-conserving gilled radiator changes, oil content dosage is changed, be easy to heat radiation, from both sides to middle variable cross-section distribution, diameter from large to small, heat-transfer effect is improved greatly, whole radiator heat-dissipation ability is improving 10% ~ 30% under cold state, reduce large capacity oil immersed power transformer and selected gilled radiator group number, or reduce the sheet number of single group of gilled radiator, reduce transformer oil, reduce transformer manufacturing cost, reduce radiator and taken transformer horizontal space around.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing, wherein:
Fig. 1 is the structural representation of the utility model transformer novel energy-conserving gilled radiator one preferred embodiment;
Fig. 2 is the schematic cross-section of the novel energy-conserving of the transformer shown in Fig. 1 gilled radiator;
In accompanying drawing, the mark of each parts is as follows: 1, fin appearance oil duct, 2, non-oil duct, 3, projection, 4, crescent hole.
Embodiment
To the technical scheme in the utility model embodiment be clearly and completely described below, obviously, described embodiment is only a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making all other embodiment that obtain under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model belongs to the significant components of transformer, and it is 110KV, 220KV, 330KV and 500KV large oil immersed power transformer, the supporting novel energy-conserving gilled radiator of using of reactor that its object is to provide a kind of.It improves the gentle side structure of gilled radiator oil side, implements augmentation of heat transfer.It can make gilled radiator improve heat-sinking capability 10-30% under natural draft (ONAN) condition.
Heat transmission has three kinds of basic modes: heat conduction, convection current and thermal radiation.Gilled radiator is take heat convection as main, the heat exchanger that thermal radiation is taken second place, and air and transformer oil are implemented heat exchange.Augmentation of heat transfer just refers to when high temperature fluid and cryogen are during in a certain heat-transfer area two side flow, makes the heat dissipation capacity Q value increase exchanging between two fluids in the unit interval.
The heat radiation process of oil is divided into three links: the heat convection of the loose inner chamber of oil and sheet, the heat conduction in the loose inwall of sheet and outside, the complex heat transfer between the loose outside of sheet and surrounding air.R is very little for wherein heat conduction link thermal resistance, can ignore.Therefore gilled radiator augmentation of heat transfer only has two approach, i.e. complex heat transfer between heat convection and strengthening sheet wall outside and the surrounding air of strengthening oil and sheet wall inner side.Transformer oil is high-viscosity fluid, and its flow resistance is little, in transformer, flows and belongs to laminar condition.
According to heat transfer principle:
（W）
In formula: Q is heat dissipation capacity (W);
K is the overall heat-transfer coefficient (W/m2, ℃) of radiator;
F is radiator self cool efficiently radiates heat area (m2);
△ t be average oil temperature and ambient air temperature poor (℃);
α
1for oil and radiator inwall convection transfer rate (W/m2, ℃);
α
2for radiator outer wall and surrounding air integrated heat transfer coefficient (W/m2, ℃).
Want enhancing heat transfer K, can improve the heat exchange coefficient of oil collecting pipe both sides, especially will improve the heat exchange coefficient of the poor side of heat exchange in oil collecting pipe both sides, to obtain good augmentation of heat transfer effect.Through test of many times research, take to change sheet shape or optimal design structure, transformer is not obvious with oil gilled radiator oil side heat transfer effect, and transformer temperature field changes little.
Therefore, the utility model, according to thermal conduction study and fluid mechanics principle, proposes to finish structure in radiator gas side and improves.
Refer to Fig. 1, the utility model embodiment comprises:
Embodiment 1:
A kind of transformer novel energy-conserving gilled radiator, spreader surface is laid with multiple fin appearance oil ducts 1, spaced apart by non-oil duct 2 between each described fin appearance oil duct 1.
The width of described fin appearance oil duct 1 is 10mm, on the surface of fin appearance oil duct 1, from both sides, extremely middle variable cross section-type forms a vortex generator, the section diameter of described vortex generator arranges from large to small from both sides to centre, on the width of fin appearance oil duct 1, make difformity change, oil content dosage is changed, be easy to heat radiation.
Described vortex generator both sides are protruding 3 structures, form spill mouth windward between two projection 3 structures.Projection 3 structures are to press out on fin appearance oil duct 1 by special equipment, two projections 3 and interruption-forming certain angle windward, laminar flow is become to turbulent flow, and gas side heat-transfer effect improves greatly, and whole radiator heat-dissipation ability is improving 10% ~ 30% under cold state.
Each protruding 3 interval 30mm rule or irregular surfaces that are arranged in fin appearance oil duct 1.Described fin appearance oil duct 1 the degree of depth be 8mm.In the time that air flows through fin from the bottom up, air stopped by fin outer lug 3 parts, and formation is streamed, and has destroyed gas side thermal boundary layer, and thermal resistance diminishes, and energy saving increases, and improved the exchange capability of heat of gas side, reached enhancing heat-transfer effect.
Described radiator two ends are all zero degree take center line as starting point to dual-side.
The two ends of described radiator are provided with for connecting the crescent hole 4 into, oil return pipe.The utility model fin crescent hole 4 size and below the length of termination of non-oil duct 2 from 30mm-100mm, also made change in various degree.
Embodiment 2: change the width of described fin appearance oil duct 1 into 50mm, each protruding 3 spacing distances change 115mm into, described fin appearance oil duct 1 the degree of depth change 12mm into, radiator two ends are all the inclination of 8 ° take center line as starting point to dual-side.All the other all describe identical with embodiment 1.
Embodiment 3: change the width of described fin appearance oil duct 1 into 100mm, each protruding 3 spacing distances change 300mm into, described fin appearance oil duct 1 the degree of depth change 15mm into, radiator two ends are all 15 ° of overturning angles take center line as starting point to dual-side.All the other all describe identical with embodiment 1.
The utility model after improving is carried out to parameter comparison with not improved prior art, specific as follows:
1, transformer specification: SZ11-240000/220
2, select gilled radiator model and the type of cooling: PC2800 (2400)-26 (2)/520 (ONAN)
3, parameter comparison, as shown in table 1:
Table 1:
This parameter is relatively by improving 15% analysis in the self cooling situation of gilled radiator, and comparative result explanation, due to augmentation of heat transfer effect, improves K value, improves the loose economic and technical norms of rear panel and obviously improves, and acquisition is compared with great society benefit.
The utility model transformer has been made 10mm ~ 100mm on the width of fin oil duct difformity with novel energy-conserving gilled radiator changes, oil content dosage is changed, be easy to heat radiation, from both sides to middle variable cross-section distribution, diameter from large to small, heat-transfer effect is improved greatly, whole radiator heat-dissipation ability is improving 10% ~ 30% under cold state, reduce large capacity oil immersed power transformer and selected gilled radiator group number, or reduce the sheet number of single group of gilled radiator, reduce transformer oil, reduce transformer manufacturing cost, reduce radiator and taken transformer horizontal space around.
The foregoing is only embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model description to do; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present utility model.
Claims (9)
1. a transformer novel energy-conserving gilled radiator, it is characterized in that, spreader surface is laid with multiple fin appearance oil ducts, on the surface of fin appearance oil duct, from both sides, extremely middle variable cross section-type forms a vortex generator, and the section diameter of described vortex generator arranges from large to small from both sides to centre.
2. transformer according to claim 1 novel energy-conserving gilled radiator, is characterized in that, the width range of described fin appearance oil duct is 10mm ~ 100mm.
3. transformer according to claim 1 novel energy-conserving gilled radiator, is characterized in that, described vortex generator both sides are bulge-structure, forms spill mouth windward between two bulge-structures.
4. transformer according to claim 3 novel energy-conserving gilled radiator, is characterized in that, each bulge clearance 30mm ~ 200mm is arranged in the surface of fin appearance oil duct.
5. transformer according to claim 4 novel energy-conserving gilled radiator, is characterized in that, described projection rule or the irregular surface that is arranged in fin appearance oil duct.
6. transformer according to claim 1 novel energy-conserving gilled radiator, is characterized in that, described fin appearance oil duct depth bounds be 8mm-15mm.
7. transformer according to claim 1 novel energy-conserving gilled radiator, is characterized in that, described radiator two ends are all the angle inclination of 0 ~ 15 ° take center line as starting point to dual-side.
8. transformer according to claim 1 novel energy-conserving gilled radiator, is characterized in that, the two ends of described radiator are provided with for connecting the crescent hole into, oil return pipe.
9. transformer according to claim 1 novel energy-conserving gilled radiator, is characterized in that, spaced apart by non-oil duct between each described fin appearance oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695875.9U CN203706791U (en) | 2013-11-07 | 2013-11-07 | Novel energy-saving finned radiator for transformers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695875.9U CN203706791U (en) | 2013-11-07 | 2013-11-07 | Novel energy-saving finned radiator for transformers |
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| CN203706791U true CN203706791U (en) | 2014-07-09 |
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| CN201320695875.9U Expired - Fee Related CN203706791U (en) | 2013-11-07 | 2013-11-07 | Novel energy-saving finned radiator for transformers |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680826A (en) * | 2013-11-07 | 2014-03-26 | 江苏腾奇电力设备科技有限公司 | Novel energy-saving finned radiator used for transformer |
| CN105810401A (en) * | 2016-04-27 | 2016-07-27 | 沈阳天通电气有限公司 | High-capacity forced-oil circulation air cooler |
| CN108299704A (en) * | 2018-01-29 | 2018-07-20 | 谭丁宁 | A kind of energy-saving slice and its manufacturing method |
| WO2019052399A1 (en) * | 2017-09-13 | 2019-03-21 | 沈阳天通电气有限公司 | Y-shaped finned radiator |
-
2013
- 2013-11-07 CN CN201320695875.9U patent/CN203706791U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103680826A (en) * | 2013-11-07 | 2014-03-26 | 江苏腾奇电力设备科技有限公司 | Novel energy-saving finned radiator used for transformer |
| CN105810401A (en) * | 2016-04-27 | 2016-07-27 | 沈阳天通电气有限公司 | High-capacity forced-oil circulation air cooler |
| WO2019052399A1 (en) * | 2017-09-13 | 2019-03-21 | 沈阳天通电气有限公司 | Y-shaped finned radiator |
| CN108299704A (en) * | 2018-01-29 | 2018-07-20 | 谭丁宁 | A kind of energy-saving slice and its manufacturing method |
| CN108299704B (en) * | 2018-01-29 | 2020-05-12 | 谭丁宁 | Energy-saving sheet and manufacturing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20171107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |