CN104361980A - Railway isolation transformer - Google Patents
Railway isolation transformer Download PDFInfo
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- CN104361980A CN104361980A CN201410628321.6A CN201410628321A CN104361980A CN 104361980 A CN104361980 A CN 104361980A CN 201410628321 A CN201410628321 A CN 201410628321A CN 104361980 A CN104361980 A CN 104361980A
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- secondary winding
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- armature winding
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Abstract
The invention provides a railway isolation transformer structure which comprises a primary winding and a secondary winding, wherein the primary winding is wound on the outer side of a cylindrical iron core; the primary winding is located on the outer side of the secondary winding; the primary winding and the secondary winding both have oval-shaped structures with straight edges on two sides; the length of a straight edge part of the primary winding is equal to the length of a straight edge part of the secondary winding; an insulating layer of the straight edge part of the primary winding is connected with an insulating layer of the straight edge part of the secondary winding; a long axis of the primary winding is greater than the long axis of the secondary winding; arc edge parts of the primary winding and arc edge parts of the secondary winding are formed into arc-shaped cavities; a plurality of reinforcing ribs are arranged in each arc-shaped cavity. According to the railway isolation transformer structure, the oval-shaped structures are adopted, and the whole height and width of the iron core are both less than the height and width of circular and square iron cores, so that the loss of the iron core is reduced, the center distance of the oval-shaped iron core is reduced, the magnetic circuit is shortened, the no-load current is correspondingly reduced, the total loss of the transformer is further reduced, and the running cost is reduced.
Description
Technical field
The invention belongs to field of electrical equipment, especially relates to a kind of railway isolating transformer.
Background technology
It is all generally fixing column type iron core or square iron core that railway isolating transformer traditional at present uses unshakable in one's determination, and core section is circular or rectangle, and winding construction and iron core shape cooperatively interact.Although the iron core good looking appearance of circular cross-section and square-section, core loss is many, and no-load current is comparatively large, and total losses of transformer is comparatively large, increases production cost, reduces product profit rate.Chinese patent CN201522917 U discloses a kind of ellipse oil immersion-type distribution transformer, comprise cylindricality iron core and the low pressure winding be wrapped on iron core and high pressure winding, core section is set as the ellipsoidal structure that both sides are straight flange, low pressure winding and high pressure winding are also set to this ellipsoidal structure, and low pressure winding and high pressure winding arrange insulating barrier.Although transformer disclosed in patent to some extent solves the high problem of common transformer cost, but due to the stability of transformer device structure will be ensured between low pressure winding and high pressure winding, need to be fixed connection to inside and outside winding, so there is no special heat dissipation structure, make whole transformer radiating effect poor.
Summary of the invention
The invention will solve above technical problem, a kind of novel railway isolating transformer being provided, solving outside the high problem of existing transformer cost, effectively can also improving radiating effect, compared to the transformer device structure disclosed in patent, its effect reducing transformer cost high is more obvious.
For solving the problems of the technologies described above, the technical scheme that the invention adopts is: a kind of railway isolating transformer structure, comprise armature winding and secondary winding, described secondary winding wound is outside cylindricality iron core, described armature winding is positioned at outside described secondary winding, described armature winding and described secondary winding are the ellipsoidal structure that both sides are straight flange, described armature winding and described secondary winding periphery are equipped with insulating barrier, the straight portion of described armature winding is equal with the straight portion length of described secondary winding, and the insulating barrier of the straight portion of the insulating barrier of the straight portion of described armature winding and described secondary winding is interconnected, the major axis of described armature winding is greater than the major axis of described secondary winding, the arc edge of described armature winding divides camber cavity fractal with the arc edge of described secondary winding, some ribs are provided with in described arc-shaped cavity, the arc edge that described ribs connects described armature winding is divided and is divided with the arc edge of described secondary winding, described arc-shaped cavity is made to form some cooling airway.
Further, the tangent line that divides of the arc edge of described ribs and described secondary winding is perpendicular.
Further, radiating copper sheet is provided with between the straight portion of described armature winding and the straight portion of described secondary winding.
The advantage that the invention has and good effect are: a kind of railway isolating transformer structure, abandoning tradition core limb is square, circular configuration mode, by the experimental data accumulated in production practices, design the transformer produced and adopt ellipsoidal structure, whole height unshakable in one's determination and width are all than circle, square iron core is little, thus reduce core loss, oval centre-to-centre spacing unshakable in one's determination reduces, shorten magnetic circuit, no-load current is corresponding reduction also, activity coefficient unshakable in one's determination is higher, window and perimeter dimension less, angle heavy and light, can effectively save silicon steel sheet and copper cash, further shorten copper conductor length, reduce copper loss, total losses of transformer is reduced further, save operating cost.Oval railway isolating transformer comparatively traditional transformer, saves the copper consumption of 30.4%, and total losses of transformer reduces 23.2%, and cost reduces by 18.7%, and all technical meets technical requirement completely, and technical merit is leading.The armature winding of the invention and secondary winding only have straight portion to be connected to each other; the fractal camber cavity of arc edge; the high and low pressure loop construction that can be parallel to each other compared to two in existing patent like this, more save cost, do not reduce the integrally-built stability of transformer simultaneously.In addition some cooling airway of being formed by ribs of radiating copper sheet and arc-shaped cavity, improve transformer heat dispersion.
Accompanying drawing explanation
Fig. 1 is the perspective view of the invention.
In figure: 1, armature winding; 2, secondary winding; 3, arc-shaped cavity; 4, ribs.
Embodiment
Elaborate below in conjunction with the specific embodiment of accompanying drawing to the invention.
As shown in Figure 1, a kind of railway isolating transformer structure, comprise armature winding 1 and secondary winding 2, described secondary winding 2 is wrapped in outside cylindricality iron core, described armature winding 1 is positioned at outside described secondary winding 2, described armature winding 1 and described secondary winding 2 are the ellipsoidal structure that both sides are straight flange, described armature winding 1 and described secondary winding 2 periphery are equipped with insulating barrier, the straight portion of described armature winding 1 is equal with the straight portion length of described secondary winding 2, and the insulating barrier of the insulating barrier of the straight portion of described armature winding 1 and the straight portion of described secondary winding 2 is interconnected, the major axis of described armature winding 1 is greater than the major axis of described secondary winding 2, the arc edge of described armature winding 1 divides camber cavity 3 fractal with the arc edge of described secondary winding 2, some ribs 4 are provided with in described arc-shaped cavity 3, the arc edge that described ribs 4 connects described armature winding 1 is divided and is divided with the arc edge of described secondary winding 2, described arc-shaped cavity 3 is made to form some cooling airway.The tangent line that described ribs 4 and the arc edge of described secondary winding 2 are divided is perpendicular.Radiating copper sheet is provided with between the straight portion of described armature winding 1 and the straight portion of described secondary winding 2.
A kind of railway isolating transformer structure, abandoning tradition core limb is square, circular configuration mode, by the experimental data accumulated in production practices, design the transformer produced and adopt ellipsoidal structure, whole height unshakable in one's determination and width are all than circle, square iron core is little, thus reduce core loss, oval centre-to-centre spacing unshakable in one's determination reduces, shorten magnetic circuit, no-load current is corresponding reduction also, adopt oval winding mode, further shorten copper conductor length, reduce copper loss, activity coefficient unshakable in one's determination is higher, window and perimeter dimension less, angle heavy and light, can effectively save silicon steel sheet and copper cash, also the total losses of transformer are effectively reduced, save operating cost.Oval snow melt transformer comparatively traditional transformer, saves the copper consumption of 30.4%, and total losses of transformer reduces 23.2%, and cost reduces by 18.7%, and all technical meets technical requirement completely, and technical merit is leading.The armature winding of the invention and secondary winding only have straight portion to be connected to each other; the fractal camber cavity of arc edge; the high and low pressure loop construction that can be parallel to each other compared to two in existing patent like this, more save cost, do not reduce the integrally-built stability of transformer simultaneously.In addition some cooling airway of being formed by ribs of radiating copper sheet and arc-shaped cavity, improve transformer heat dispersion.
Above an embodiment of the invention has been described in detail, but described content being only the preferred embodiment of the invention, the practical range for limiting the invention can not being considered to.All equalization changes done according to the invention application range with improve, within the patent covering scope that still all should belong to the invention.
Claims (3)
1. a railway isolating transformer structure, it is characterized in that: comprise armature winding and secondary winding, described secondary winding wound is outside cylindricality iron core, described armature winding is positioned at outside described secondary winding, described armature winding and described secondary winding are the ellipsoidal structure that both sides are straight flange, described armature winding and described secondary winding periphery are equipped with insulating barrier, the straight portion of described armature winding is equal with the straight portion length of described secondary winding, and the insulating barrier of the straight portion of the insulating barrier of the straight portion of described armature winding and described secondary winding is interconnected, the major axis of described armature winding is greater than the major axis of described secondary winding, the arc edge of described armature winding divides camber cavity fractal with the arc edge of described secondary winding, some ribs are provided with in described arc-shaped cavity, the arc edge that described ribs connects described armature winding is divided and is divided with the arc edge of described secondary winding, described arc-shaped cavity is made to form some cooling airway.
2. a kind of railway isolating transformer structure according to claim 1, is characterized in that: the tangent line that the arc edge of described ribs and described secondary winding is divided is perpendicular.
3. a kind of railway isolating transformer structure according to claim 1, is characterized in that: be provided with radiating copper sheet between the straight portion of described armature winding and the straight portion of described secondary winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410628321.6A CN104361980A (en) | 2014-11-10 | 2014-11-10 | Railway isolation transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410628321.6A CN104361980A (en) | 2014-11-10 | 2014-11-10 | Railway isolation transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104361980A true CN104361980A (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410628321.6A Pending CN104361980A (en) | 2014-11-10 | 2014-11-10 | Railway isolation transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104361980A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284718A (en) * | 2021-05-19 | 2021-08-20 | 云南电网有限责任公司电力科学研究院 | Long-circle transformer winding and method for checking short-circuit-resistant bearing capacity thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638655U (en) * | 2010-01-04 | 2010-11-17 | 宁波奥克斯高科技有限公司 | Transformer |
| CN202394674U (en) * | 2011-12-28 | 2012-08-22 | 天津鼎一电气成套设备有限公司 | Oil-immersed transformer |
| CN103151149A (en) * | 2013-03-07 | 2013-06-12 | 山东威特变压器厂 | Oil-saving transformer |
| CN204242778U (en) * | 2014-11-10 | 2015-04-01 | 天津市元和华铁电气设备有限公司 | A kind of railway isolating transformer |
-
2014
- 2014-11-10 CN CN201410628321.6A patent/CN104361980A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201638655U (en) * | 2010-01-04 | 2010-11-17 | 宁波奥克斯高科技有限公司 | Transformer |
| CN202394674U (en) * | 2011-12-28 | 2012-08-22 | 天津鼎一电气成套设备有限公司 | Oil-immersed transformer |
| CN103151149A (en) * | 2013-03-07 | 2013-06-12 | 山东威特变压器厂 | Oil-saving transformer |
| CN204242778U (en) * | 2014-11-10 | 2015-04-01 | 天津市元和华铁电气设备有限公司 | A kind of railway isolating transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284718A (en) * | 2021-05-19 | 2021-08-20 | 云南电网有限责任公司电力科学研究院 | Long-circle transformer winding and method for checking short-circuit-resistant bearing capacity thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150218 |