CN104538152A - Oil type transformer and application thereof - Google Patents
Oil type transformer and application thereof Download PDFInfo
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- CN104538152A CN104538152A CN201510029841.XA CN201510029841A CN104538152A CN 104538152 A CN104538152 A CN 104538152A CN 201510029841 A CN201510029841 A CN 201510029841A CN 104538152 A CN104538152 A CN 104538152A
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Abstract
The invention discloses an oil type transformer which comprises an oil tank, a work assembly, transformer oil and cooling assemblies. The number of the cooling assemblies is at least one, and the cooling assemblies are arranged on the outer wall of the transformer but not communicated with the interior of the transformer. Different from the prior art, the cooling mode that the cooling assemblies are arranged on the outer wall of the oil type transformer but not communicated with the interior of the oil type transformer is initiatively adopted, air serves as a cooling medium, natural cooling is achieved by fully using the principle of circulating convection of the air in a cooling channel, low-carbon environment protection is achieved, efficiency is high, and energy is saved; besides, on the premise that the body structure of the oil type transformer is not affected and good natural cooling performance is guaranteed, the size of the transformer is greatly reduced, by means of the cooperative use of cooling fins, two natural cooling modes including air cooling and transformer oil cooling are ingeniously combined, and accordingly the cooling effect of the oil type transformer is optimal; the oil type transformer has very broad application prospects and high popularization value.
Description
Technical field
The present invention relates to a kind of transformer, specifically, relate to a kind of oily formula transformer, belong to electrical equipment technical field.
Background technology
Oil formula transformer, also known as oil-filled transformer, belong to a kind of version of transformer, operating state lower coil is immersed in oil, there is the features such as volume is large, cost is low, easy to maintenance, good heat dissipation, capability of overload strong, good environmental adaptability, the power transformer major part of current electric online operation is still oily formula transformer, wherein ensures that the excellent heat dispersion performance of transformer is one of key technology performance of transformer.
The type of cooling of current domestic outer oil type transformer mainly contains four kinds, i.e. Natural Oil Circulation Power self-cold radiating, Natural Oil Circulation Power wind-cooling heat dissipating, forced oil-circulation wind-cooling heat dissipating and forced oil circulation water-cooling heat radiation.Natural Oil Circulation Power self-cold radiating is applicable to small-sized oily formula transformer, usual employing gilled radiator dispels the heat, a kind of oil-filled transformer disclosed in Chinese utility model patent CN 203466020U, by oil tank of transformer four sidewalls on uniform radiating fin, the built-in heat dissipation cavity of radiating fin, transformer oil flows in fuel tank and between heat dissipation cavity, can increase area of dissipation, improves the radiating effect of transformer.But, find in practice, the horizontal volume national language of transformer under this kind of chip radiating mode is huge, that transport or maintenance are all very inconvenient, and chip radiating efficiency is very low, although be used widely in the heat radiation of low capacity transformer, be difficult to the heat dissipation problem solving high-power transformer, therefore have some limitations.Natural Oil Circulation Power wind-cooling heat dissipating mode is that after utilizing Transformer Winding and heating unshakable in one's determination, intrinsic oil forms convection current, and after oil flows through radiator, heat is taken away by the wind blown out by cooling fan, thus reaches heat radiation object.This kind of radiating mode adopts cooling fan usually, a kind of type of cooling of high-power transformer radiating fin disclosed in Chinese invention patent CN 1933046A, several to fan by arranging on radiating fin, and it is positioned opposite from the horizontal by the 8-12 degree elevation angle, wind direction is tilted, change heat dissipation path, there is certain radiating effect, in being applicable to, Large Oil formula transformer.Forced oil-circulation wind-cooling heat dissipating mode is used in especially big and big-and-middle-sized oily formula transformer, and the effect mainly through oil pump makes the oil in transformer be forced to Rapid Circulation, and when oil flows through radiator, heat is taken away by the wind blown out by cooling fan.This kind of radiating mode adopts forced air cooler usually, and transformer top layer high temperature oil is sent in cooling water pipe by oil pump by forced air cooler, and the heat produced passes to cooling water pipe inwall and fin, then by cooling fan dry just heat dissipation in air.This kind of radiating mode brings convenience not only can to the making and installation of transformer, use, maintenance, and can leakage of oil be reduced, but it compares and is applicable to cold weather area and few water area, for the area that long-term temperature is higher, then to consider the problem that the specified cooling capacity of forced air cooler declines to some extent.The main distinction of forced oil-circulation forced air cooler and Natural Oil Circulation Power forced air cooler adopts oil-immersed pump forced oil to circulate, and so oily flow velocity is accelerated, and cooling effectiveness is improved.Forced oil circulation water-cooling heat radiation adopts water cooler as heat-exchange device that is large, oversize transformer usually, specific heat due to air is only 1/4 of water, so water cooler is than forced air cooler good cooling results, and due to the thermal transmission coefficient of the ratio of heat transfer coefficient water of air low, therefore under the prerequisite that cooling capacity is identical, water cooler is less than the volume of forced air cooler, lightweight and noise is low.But current domestic conventional water cooler nearly all adopts single tube structure, to break the phenomenon causing cooling water to enter into transformer oil so there is cooling copper tube in too much cause water cooler, due to transformer oil cannot be entered into by Timeliness coverage water, the transformer oil insulation property into water are often made significantly to decline, thus causing transformer, in running, serious accident occurs, impact is very severe.For above-mentioned situation, Chinese utility model patent CN 201311821Y discloses a kind of oil-immersed water-cooled transformer, water-cooled panel radiator is adopted to substitute the conventional vertical cooling heat dissipation tubular construction of single tube, while increasing heat exchange area, improve the stability of transformer work, there is certain radiating effect.
In sum, be not difficult to find out, in order to maintain preferably heat dispersion, in the big-and-middle-sized transformer that capacity is larger, the foreign compulsion that adopts dispels the heat more, and adopt natural oil to dispel the heat often because the topology layout of its oily formula transformer self limit, the natural heat dissipation system that convection current is good cannot be formed, and the density of transformer oil can increase with the growth of service time, transformer oil is made to become sticky, therefore its mobility also can reduce greatly, radiating effect is deteriorated and needs periodic replacement, therefore have to dispel the heat by the above-mentioned heat dissipation equipment that forces, so add the equipment in oily formula transformer, total cost and maintenance difficulties is caused to increase, limit the popularization of oil-filled transformer to a certain extent.
Summary of the invention
For the problems referred to above that prior art exists, the object of the present invention is to provide a kind of oily formula transformer, forcing heat dissipation equipment and the problems such as the transformer that causes is complicated, total cost and maintenance difficulties increase to overcome oily formula transformer in prior art by increasing.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of oily formula transformer, comprise fuel tank, work package, transformer oil and radiating subassembly, transformer oil is contained in fuel tank, and work package part is immersed in transformer oil, radiating subassembly is at least one, and the outer wall being located at transformer is not communicated with inside transformer.
Preferably, work package comprises iron core and winding, and winding to be wrapped on iron core and to be placed in the middle part of fuel tank with iron core.
Preferably, this radiating subassembly is located in oily formula transformer.
Preferably, radiating subassembly comprise a heat radiation wall and by heat radiation wall around the heat dissipation channel formed.
More preferably, realize energy-saving, environment-friendly and high-efficiency heat radiation to make full use of natural draft, a pair opposing sidewalls in transformer four sidewall is run through at heat dissipation channel two ends simultaneously, i.e. disjunct two side; Or roof and diapire; Or sidewall and diapire; Or same sidewall; Or more any one above combination.
Preferably, heat dissipation channel and a pair opposing sidewalls running through in transformer four sidewall parallel with transformer diapire, i.e. disjunct two side; Or heat dissipation channel is parallel with transformer sidewall and run through roof and the diapire of transformer.
It is worth mentioning that, this radiating subassembly greatly can reduce the volume of oily formula transformer, heat dissipation channel is in order to mate oily formula transformer device structure further, reduce the structure of manufacturing cost and this oily formula transformer uncomplicated, heat dissipation channel and sidewall be arranged in parallel and run through transformer diapire, in addition, also can set up an auxiliary heat dissipation passage and run through sidewall, this auxiliary heat dissipation passage makes it into nonlinear type by bending two ends, now this radiating subassembly becomes bend pipe (curved passage) shape, the circular arc degree of this bend pipe can be determined by concrete manufacture craft, select cost in prior art minimum and the radian of stable performance, greatly can reduce the fuel tank volume of oily formula transformer thus.With routine oil formula transformer unlike, the oily formula transformer applying this radiating subassembly can greatly reduce transformer oil consumption, and reduces the radiating fin quantity that transformer oil or coolant are housed, and even can not be realized heat radiation by this type of radiating fin.
More preferably, in order to ensure radiating effect further, the length of conventional transformer fuel tank can be increased, to increase volume of fuel tank, and then transformer content transformer oil being increased, thus increase heat eliminating medium, improve radiating effect further.
For realizing reducing box-type substation volume further and floor space still can maintain preferably heat dispersion, as one preferably execution mode, can on the basis that the length of oil tank of transformer is increased, reduce the width (thickness) of fuel tank, and make this fuel tank still maintain the transformer oil with routine oil formula transformer same volume.
More preferably, the cross section of heat radiation wall is on-plane surface.
More preferably, the cross section of heat radiation wall is waveform face.
More preferably, the cross section of heat radiation wall comprises arc-shaped wave shape wave face and polygon waveform face.
More preferably, the cross section of heat dissipation channel comprises non-enclosed cross section or closed cross section.
Still more preferably, the shape of the cross section of heat dissipation channel includes but not limited to rectangle, rhombus, circle, ellipse, triangle, trapezoidal, hexagon, octagon or dodecagon.
Still more preferably, the preferred rectangle of the shape of the cross section of heat dissipation channel, rhombus, circle or hexagon.
More preferably, the axis of heat dissipation channel comprises linear, fold-line-shaped, arc line shaped or scroll.
Preferably, the connected mode of radiating subassembly and oil tank of transformer, for being fixedly connected with, is preferably welding.
In order to improve heat dispersion further, especially natural heat dissipation performance, as one preferably execution mode, the multiple radiating fin of this oily formula transformer peripheral hardware, radiating fin communicates with oil tank of transformer inside, and in other words, transformer oil flows in radiating fin.Wherein, the shape of radiating fin and installation site can with reference to the oily formula transformers of band radiating fin of the prior art.
As further preferred version, radiating fin symmetry is arranged on oily formula transformer two side, be communicated with oily formula inside transformer, transformer oil can at each radiating fin internal circulation flow, heat is brought in each radiating fin, carry out heat exchange heat radiation by radiating fin and extraneous air, two kinds of ingenious combinations of natural heat dissipation mode of air heat radiation and transformer oil being dispelled the heat, natural cooling effect significantly increases.As preferably execution mode, radiating fin is arranged on the larger two side of oily formula transformer phase spacing.
In addition, in order to increase the air flow property in transformer room further, promote the heat dispersion of transformer room, oil formula transformer is other also can arrange multiple fan, fan installation straggly, air blast direction is consistent with the heat dissipation channel direction of each radiating subassembly, can accelerate the air passage rates in heat dissipation channel, significantly increase radiating effect.
Another object of the present invention is to the application providing a kind of oily formula transformer, above-mentioned arbitrary described oily formula transformer is in box-type substation as transformer.
Preferably, this oily formula transformer is applicable to all kinds of box-type substation.
Relative to prior art, the invention has the beneficial effects as follows: the present invention adopts radiating subassembly to be located at oily formula transformer outer wall but not inner with it radiating mode be communicated with initiatively, take air as heat eliminating medium, make full use of air and realize natural heat dissipation in the principle of heat dissipation channel Inner eycle convection current, low-carbon environment-friendly, energy-efficient, and do not affecting oily formula transformer body structure and greatly reducing the volume of transformer under ensureing the prerequisite of good natural heat dissipation performance, radiating fin with the use of, the natural heat dissipation of transformer oil can be utilized better, the natural cooling effect of oily formula transformer is made to reach best, therefore, there is very wide application prospect and promotional value.
Accompanying drawing explanation
Fig. 1 is the cutaway view of the first preferred embodiment of oily formula transformer provided by the invention;
Fig. 2 is the cutaway view of the second preferred embodiment of oily formula transformer provided by the invention;
Fig. 3 is the cutaway view of the third preferred embodiment of oily formula transformer provided by the invention;
Fig. 4 is the stereogram of the 4th kind of preferred embodiment of oily formula transformer provided by the invention;
Fig. 5 is the cutaway view of the 4th kind of preferred embodiment of oily formula transformer provided by the invention.
Embodiment
Do to illustrate in detail, intactly further to the present invention below in conjunction with accompanying drawing and preferred embodiment.
Embodiment 1
Fig. 1 is the preferred embodiment schematic diagram of a kind of oily formula transformer provided by the invention, as shown in Figure 1, oil formula transformer is rectangular structure, comprise fuel tank 1, work package 2, transformer oil (not shown) and multiple radiating subassembly 3, be contained in fuel tank 1 in transformer oil, work package 2 comprises iron core 201 and winding 202, and winding 202 to be wrapped on iron core 201 and to be placed in the middle part of fuel tank 1 with iron core 201; Radiating subassembly 3 is by heat radiation wall 301 and form around the heat dissipation channel 302 formed; Radiating subassembly 301 is located in fuel tank 1, but is not communicated with inside transformer.
The cross section of heat radiation wall 301 is waveform face, planar shaped of comparing cross section, and wavy cross-section has larger cross-sectional area, also larger with the heat exchange area of inside transformer, is more conducive to heat radiation.The cross section of heat dissipation channel 302 is circular, is convenient to processing and manufacturing equally, is conducive to reducing manufacturing cost.In addition, the trajectory of radiating subassembly 3 is linear pattern, makes radiating subassembly 3 on the whole in hollow tubular.It should be noted that the shape of cross section of heat radiation wall and heat dissipation channel is not unique herein, but adjust flexibly with the structure of corresponding transformer; Should not be considered as uniquely for the description of the heat radiation wall of this radiating subassembly and the shape of cross section of heat dissipation channel in the present embodiment.
In order to make full use of the inner space of oily formula transformer, improve oily formula inside transformer natural heat dissipation performance, a pair opposing sidewalls 101 and 103 in fuel tank 1 four sidewall is run through at heat dissipation channel 302 two ends simultaneously, radiating subassembly 3 is fixedly mounted on sidewall 101 and 103 in a welding manner, is not communicated with inside transformer.As shown in Figure 1, radiating subassembly 3 is arranged symmetrically in both sides in oily formula transformer, be distributed on the both sides of the oily formula transformer work package 2 mediated from top to bottom, when oily formula transformer is in running order, the heat that its work package 2 distributes absorbs and to be brought in extraneous air through heat dissipation channel 302 by the circulating air naturally circulated naturally distribute by organizing radiating subassembly 3 more, and natural cooling effect is remarkable.It is worth mentioning that, this radiating subassembly 3 is using air as heat eliminating medium, make full use of air and realize natural heat dissipation in the principle of heat dissipation channel 302 Inner eycle convection current, low-carbon environment-friendly, energy-efficient, and not affecting oily formula oil formula transformer body structure and greatly reducing the volume of oily formula transformer under ensureing the prerequisite of good natural heat dissipation performance, there is very wide application prospect and promotional value.
Embodiment 2
Fig. 2 is the preferred embodiment schematic diagram of the oily formula transformer of another kind provided by the invention.Because the work package 2 of formula transformer oily in embodiment 1 is positioned at its interior central area, cause radiating subassembly 3 cannot pass from central area, both sides can only be distributed in, reduce the natural heat dissipation performance of oily formula inside transformer to a certain extent, therefore, in order to utilize the inner space of oily formula transformer more fully, increase the heat exchange area of radiating subassembly 3 and oily formula inside transformer, improve radiating effect, inventor has made the improvement on part-structure on the basis of embodiment 1.
As shown in Figure 2, 10 groups of symmetries have been set up and equally distributed radiating subassembly 31 in the region that the opposing sidewalls 101 and 103 of oily formula oil tank of transformer 1 corresponds to work package 2, often organize radiating subassembly 31 and include 3 independent radiating subassembly 31a from large to small, 31b and 31c, each independently radiating subassembly 31a, 31b and 31c is by non-planar shaped heat radiation wall 3101 and form around the square heat dissipation channel 3102 formed, three the radiating subassembly 31a often organized, 31b and 31c interval is even, its corresponding trajectory is c-shaped and be all in same perpendicular, large-scale radiating subassembly 31a is in outermost, medium-sized radiating subassembly 31b mediates, small heat-dissipating assembly 31c is in inner side, the same sidewall 101 or 103 of oily formula oil tank of transformer 1 is run through at heat dissipation channel 3102 two ends often organizing radiating subassembly 31 simultaneously, radiating subassembly 31 is fixedly mounted on sidewall 101 and 103 all in a welding manner, be not communicated with fuel tank 1 inside.Radiating subassembly 3 and radiating subassembly 31 with the use of, the surrounding heat radiation of work package 2 evenly, when under oily formula transformer is in running order, the heat that its work package 2 one way or another distributes is absorbed from surrounding by radiating subassembly 3 and radiating subassembly 31, and to be brought in extraneous air through heat dissipation channel 302 and 3102 by the circulating air naturally circulated and naturally distribute, the basis of embodiment 1 improves the natural heat dissipation performance of oily formula inside transformer central area, improves the natural cooling effect of oily formula transformer.
Embodiment 3
Fig. 3 is the preferred embodiment schematic diagram of the oily formula transformer of another kind provided by the invention.With above-described embodiment unlike, dispel the heat to utilize the natural cold air of oily formula transformer bottom more fully, promote the circulation of cold air in oily formula transformer, improve radiating effect further, the structure of inventor to oily formula transformer has made further improvement.
As shown in Figure 3, two groups of radiating subassemblies 32 set up by oil formula transformer 2 on the basis of embodiment 1, its heat dissipation channel 3201 two ends run through the sidewall 101 of fuel tank 1 and diapire 106 and sidewall 103 and diapire 106 respectively, because cold air focuses mostly in the bottom of oily formula transformer, therefore this kind of layout type cold air of being conducive to oily formula transformer bottom carries out exchange heat with the hot-air of middle and upper part, heat dissipation channel 3201 be arranged so that the air at the oily upper and lower two ends of formula transformer is circulated, thus oily formula transformer each several part homogeneous temperature from top to bottom can be made, avoid local overheating phenomenon, greatly improve the natural heat dissipation performance of oily formula transformer.
Embodiment 4
Fig. 4 and Fig. 5 is the preferred embodiment schematic diagram of the oily formula transformer of another kind provided by the invention.With above-described embodiment unlike, in order to the natural heat dissipation performance of the oil of lift tank better formula transformer, two groups of radiating fins can be set up on the architecture basics of above-mentioned any embodiment, specifically for the oily formula transformer described in embodiment 2.As shown in Figure 4 and Figure 5, often organize radiating fin 4 to form by 15 independent radiating fins 401, radiating fin 401 is in C font hollow-core construction, be symmetricly set in the distant two opposite side walls of fuel tank 1 102 and 104 respectively, and be communicated with the inside of oily formula oil tank of transformer 1, transformer oil can at each radiating fin 401 internal circulation flow, and the heat that oily formula inside transformer produces is brought in each radiating fin 401 by the transformer oil flowed, and carries out heat exchange heat radiation by radiating fin 401 and extraneous air.The setting that the oily formula transformer of this kind of structure compensate for because of radiating subassembly 3 and 31 causes transformer oil to reduce thus weakens the deficiency of oily circulation cooling, air heat radiation and transformer oil are dispelled the heat two kinds of ingenious combinations of natural heat dissipation mode, greatly improves the natural heat dissipation performance of oily formula transformer.
Embodiment 5
In order to increase the air flow property in transformer room further, promote the heat dispersion of transformer room, on the basis of above-mentioned any embodiment, cooling system sets up at least one fan further, fan is arranged in transformer room, air blast direction is consistent with the heat dissipation channel direction of each radiating subassembly, can accelerate the air passage rates in heat dissipation channel, significantly increase radiating effect.
Finally be necessary described herein: above embodiment is only for being described in more detail technical scheme of the present invention; can not be interpreted as limiting the scope of the invention, some nonessential improvement that those skilled in the art's foregoing according to the present invention is made and adjustment all belong to protection scope of the present invention.
Claims (10)
1. an oily formula transformer, it is characterized in that: comprise fuel tank, work package, transformer oil and radiating subassembly, radiating subassembly is at least one, and the outer wall being located at transformer is not communicated with inside transformer.
2. oily formula transformer according to claim 1, is characterized in that: described radiating subassembly comprise a heat radiation wall and by heat radiation wall around the heat dissipation channel formed.
3. oily formula transformer according to claim 4, is characterized in that: a pair opposing sidewalls in transformer four sidewall is run through at described heat dissipation channel two ends simultaneously, i.e. disjunct two side; Or roof and diapire; Or sidewall and diapire; Or same sidewall; Or more any one above combination.
4. oily formula transformer according to claim 4, is characterized in that: described heat dissipation channel and a pair opposing sidewalls running through in transformer four sidewall parallel with transformer diapire, i.e. disjunct two side; Or heat dissipation channel is parallel with transformer sidewall and run through roof and the diapire of transformer.
5. oily formula transformer according to claim 7, is characterized in that: described oily formula transformer also can be set up an auxiliary heat dissipation passage and run through sidewall.
6. oily formula transformer according to claim 8, is characterized in that: described auxiliary heat dissipation passage is nonlinear type, and now this radiating subassembly becomes syphon shape.
7. oily formula transformer according to claim 4, is characterized in that: the cross section of described heat radiation wall is on-plane surface.
8. oily formula transformer according to claim 1, is characterized in that: the multiple radiating fin of described oily formula transformer peripheral hardware, radiating fin communicates with oil tank of transformer inside, and in other words, transformer oil flows in radiating fin.
9. oily formula transformer according to claim 1, is characterized in that: described oily formula transformer is other also can arrange fan, fan installation straggly, and air blast direction is consistent with the heat dissipation channel direction of each radiating subassembly.
10. the application of the arbitrary described oily formula transformer of claim 1 ~ 23, is characterized in that: described oily formula transformer is used in box-type substation as transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510029841.XA CN104538152A (en) | 2015-01-01 | 2015-01-21 | Oil type transformer and application thereof |
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| CN2015100009424 | 2015-01-01 | ||
| CN201510000942 | 2015-01-01 | ||
| CN201510029841.XA CN104538152A (en) | 2015-01-01 | 2015-01-21 | Oil type transformer and application thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104992810A (en) * | 2015-07-03 | 2015-10-21 | 安徽广正电气科技有限公司 | Oil-immersion transformer |
| CN105448479A (en) * | 2015-12-28 | 2016-03-30 | 人民电器集团江苏斯诺成套设备工程有限公司 | Cooling mechanism of energy-saving type power transformer |
| CN108010665A (en) * | 2017-12-29 | 2018-05-08 | 国网山东省电力公司嘉祥县供电公司 | A kind of power transformer with wind-force pumping heat dissipation channel |
| CN110164656A (en) * | 2019-06-26 | 2019-08-23 | 哈尔滨理工大学 | A kind of combined type oil immersed type wind-cooling heat dissipating transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104992810A (en) * | 2015-07-03 | 2015-10-21 | 安徽广正电气科技有限公司 | Oil-immersion transformer |
| CN105448479A (en) * | 2015-12-28 | 2016-03-30 | 人民电器集团江苏斯诺成套设备工程有限公司 | Cooling mechanism of energy-saving type power transformer |
| CN108010665A (en) * | 2017-12-29 | 2018-05-08 | 国网山东省电力公司嘉祥县供电公司 | A kind of power transformer with wind-force pumping heat dissipation channel |
| CN110164656A (en) * | 2019-06-26 | 2019-08-23 | 哈尔滨理工大学 | A kind of combined type oil immersed type wind-cooling heat dissipating transformer |
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Application publication date: 20150422 |