CN203642764U - Heat radiator for transformer - Google Patents
Heat radiator for transformer Download PDFInfo
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- CN203642764U CN203642764U CN201320695914.5U CN201320695914U CN203642764U CN 203642764 U CN203642764 U CN 203642764U CN 201320695914 U CN201320695914 U CN 201320695914U CN 203642764 U CN203642764 U CN 203642764U
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- transformer
- radiator
- oil
- heat radiator
- oil duct
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Abstract
The utility model discloses a heat radiator for a transformer, which comprises a cooling fin, wherein oil ducts and non-oil duct are arranged on the cooling fin at intervals; bulges are distributed on the surfaces of the oil ducts at intervals of 30-200mm; the bulges comprise left side bulges and right side bulges; and a sunken area is arranged between each left side bulge and each right side bulge. With the adoption of the mode, the heat radiator can the heat exchange capability on a gas side, and achieves an effect of improving heat transfer; the watt dissipating capacity of the whole heat radiator in a self-cooling state is improved by 10-30%; the number of finned heat radiator groups adopted by the high-capacity oil immersed power transformer; the number of fins of the single finned heat radiator group is reduced; transformer oil is reduced; the manufacturing cost of the transformer is lowered; and a transverse space around the transformer occupied by the heat radiator is reduced.
Description
Technical field
The utility model relates to radiator field, particularly relates to a kind of radiator for transformer.
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 heat transfer 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 the problem of high pressure or ultrahigh pressure large-scale oil-immersed power transformer, the solution of reactor development urgent need.
Utility model content
The technical problem that the utility model mainly solves is to provide a kind of radiator for transformer, can improve the exchange capability of heat of gas side, has reached and has strengthened the effect of conducting heat.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of radiator for transformer is provided, comprise: fin, described fin is provided with apart from one another by the oil duct and the non-oil duct that arrange, each oil duct surface is all placed with projection, between described projection, spacing distance is 30mm-200mm, and described projection comprises left hand projection and right side projection, between left hand projection and right side projection, is a depressed area.
In preferred embodiment of the utility model, the depth bounds of described oil duct is 8mm-15mm.
In preferred embodiment of the utility model, described oil duct width range is 10mm-100mm.
In preferred embodiment of the utility model, oil duct is variable cross section-type setting in the middle of described arranged on left and right sides is raised to, and diameter arranges from large to small.
In preferred embodiment of the utility model, described projection rule or the irregular surface that is arranged in oil duct.
The beneficial effects of the utility model are: the utility model radiator for transformer is in the time that air flows through fin from the bottom up, air is stopped by fin outer lug part, formation is streamed, destroy gas side thermal boundary layer, thermal resistance diminishes, energy saving increases, improve the exchange capability of heat of gas side, reach enhancing heat-transfer effect, 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 radiator for transformer one preferred embodiment;
Fig. 2 is the schematic cross-section of radiator for transformer shown in Fig. 1;
In accompanying drawing, the mark of each parts is as follows: 1, oil duct, 2, non-oil duct, 3, left hand projection, 4, right side projection, 5, depressed area.
The specific 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 high-efficiency and energy-saving 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 gravity-flow ventilation (ONAN) condition.
Heat transmission has three kinds of basic modes: heat conduction, convection current and heat radiation.Gilled radiator is take heat convection as main, the heat exchanger that heat 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:
In formula: Q is heat dissipation capacity (W);
K is the overall heat-transfer coefficient (W/m2, ℃) of radiator;
F is radiator self-cooled 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 coefficient of heat transfer of oil collecting pipe both sides, especially will improve the coefficient of heat transfer 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, for the problems referred to above, has extruded bulge-structure on the oil duct 1 of fin surface.
Refer to Fig. 1 and Fig. 2, the utility model embodiment comprises:
A kind of radiator for transformer, comprising: fin, and described fin is provided with apart from one another by the oil duct 1 and the non-oil duct 2 that arrange, all rule or irregular projections that is placed with of each oil duct 1 surface, between described projection, spacing distance is 30mm-200mm, and when air flows through fin from the bottom up, air is stopped by fin outer lug part, formation is streamed, destroyed gas side thermal boundary layer, thermal resistance diminishes, and energy saving increases, the exchange capability of heat that has improved gas side, has reached enhancing heat-transfer effect.
Described projection comprises left hand projection 3 and right side projection 4, between left hand projection 3 and right side projection 4, is a depressed area 5, and laminar flow is become to turbulent flow, and gas side heat-transfer effect improves greatly, and whole radiator heat-dissipation ability has improved 10%-30% under self cooling (ONAN) state,
The depth bounds of described oil duct 1 is 8mm-15mm, has increased the space of oil duct 1, makes oil in oil duct 1, have sufficient space to carry out from heat radiation.Described oil duct 1 width range is 10mm-100mm.And oil duct 1 is variable cross section-type setting in the middle of described arranged on left and right sides is raised to, and diameter arranges from large to small.On oil duct 1 width, make difformity change, oil content dosage is changed, be easy to heat radiation.
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 radiator for transformer is in the time that air flows through fin from the bottom up, air is stopped by fin outer lug part, formation is streamed, destroy gas side thermal boundary layer, thermal resistance diminishes, energy saving increases, improve the exchange capability of heat of gas side, reach enhancing heat-transfer effect, 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 (5)
1. a radiator for transformer, it is characterized in that, comprise: fin, described fin is provided with apart from one another by the oil duct and the non-oil duct that arrange, each oil duct surface is all placed with projection, between described projection, spacing distance is 30mm-200mm, and described projection comprises left hand projection and right side projection, between left hand projection and right side projection, is a depressed area.
2. radiator for transformer according to claim 1, is characterized in that, the depth bounds of described oil duct is 8mm-15mm.
3. radiator for transformer according to claim 1, is characterized in that, described oil duct width range is 10mm-100mm.
4. radiator for transformer according to claim 1, is characterized in that, oil duct is variable cross section-type setting in the middle of described arranged on left and right sides is raised to, and diameter arranges from large to small.
5. radiator for transformer according to claim 1, is characterized in that, described projection rule or the irregular surface that is arranged in oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695914.5U CN203642764U (en) | 2013-11-07 | 2013-11-07 | Heat radiator for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320695914.5U CN203642764U (en) | 2013-11-07 | 2013-11-07 | Heat radiator for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203642764U true CN203642764U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320695914.5U Expired - Fee Related CN203642764U (en) | 2013-11-07 | 2013-11-07 | Heat radiator for transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN203642764U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142089A (en) * | 2014-06-27 | 2014-11-12 | 常熟市友邦散热器有限责任公司 | Rivet-free riveting radiator and manufacturing method thereof |
-
2013
- 2013-11-07 CN CN201320695914.5U patent/CN203642764U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142089A (en) * | 2014-06-27 | 2014-11-12 | 常熟市友邦散热器有限责任公司 | Rivet-free riveting radiator and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20171107 |