CN101388279A - Body of shell type amorphous alloy transformer - Google Patents
Body of shell type amorphous alloy transformer Download PDFInfo
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- CN101388279A CN101388279A CNA2008101165542A CN200810116554A CN101388279A CN 101388279 A CN101388279 A CN 101388279A CN A2008101165542 A CNA2008101165542 A CN A2008101165542A CN 200810116554 A CN200810116554 A CN 200810116554A CN 101388279 A CN101388279 A CN 101388279A
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Abstract
A body of a shell type amorphous alloy transformer comprises an amorphous alloy shell type iron core (1) and rectangular coils which are alternatively arranged, and a U-shaped epoxy resin insulating clamp (3) is arranged outside an iron yoke (31) of the amorphous alloy shell type iron core (1). Square type frameworks (5) are respectively arranged on the upper portion and the lower portion of the iron core (5) outside each phase winding (2), and the phase winding is clamped by the square type frameworks (5) through an insulating plate (6). An intermediate section of box body and a lower section of box body in a transformer with an oil box or a gas box can stretch the square type framework (5) of each phase winding through a breast beam and box walls, thereby facilitating the short-circuit force of the phase winding to transfer to the square type framework (5) and the oil box walls. A coil support plate (4) which is formed by insulating elements is arranged on the inner side of the phase winding (2), which can lead the crosswise force of a coil not to press the amorphous alloy shell type iron core (1) when the coil is in short-circuit. The intermediate section of box body and the lower section of box body are used to position the iron core through the U-shape clamp (3). A dry transformer is used to fix the iron core (1) through an upper location press plate and a lower location press plate (27).
Description
Technical field
The present invention relates to the device body of shell-type amorphous alloy transformer.
Background technology
Amorphous alloy transformer is a kind of low-loss energy-economic transformer of excellence, and it utilizes amorphous alloy material to replace silicon steel sheet to make iron core, and its feature is that no-load loss is low and no-load current is little, has therefore obtained increasing attention.But, be that tensile stress or bending stress all can influence its magnetic property because amorphous alloy material is very responsive to mechanical stress.Therefore the anti-short circuit capability of amorphous alloy transformer is relatively poor, and iron core can not bear the effect of mechanical force.
Present amorphous alloy transformer has generally adopted the core type transformer structure, and high-voltage coil and low-voltage coil is enclosed within on the core limb with one heart, and coil surrounds unshakable in one's determination.When this core type transformer structure was born short-circuit electromotive force, the radial load direction that the high pressure winding bears was outside, and the radial load direction that the low pressure winding bears is inside.Because the particularity of amorphous alloy strips (frangible, hardness big, be difficult to cutting processing etc.), core section have to be rectangle, and the high-low pressure winding also is designed to rectangle.Under conventional core type transformer structure, the short-circuit electromotive force that is radially born of rectangle winding is harsher than circular winding, easy stress deformation when bearing short-circuit electromotive force.In existing amorphous alloy transformer structure, axially compressing by folder from top to bottom of winding can be born axial short-circuit force effect, but the radially electric power of interior loop is big during short circuit in winding, caused moderate finite deformation, the harshest point when becoming amorphous alloy transformer and bearing short circuit.
And the main leakage direction of shell type transformer be winding radially, so being in the axial force of the winding in phase winding centre position, the transformer of this structure offsets because of the opposition in the winding, have only the axial extrapolability of outermost layer winding to affact on unshakable in one's determination and the tank wall, as long as make ability that core clamping and tank wall bear extrapolability enough.Again because the little and left-right symmetric of axial magnetic flux of this structure winding, so its radial load is little and offset substantially on the winding cross section, and winding does not produce radially unstability.It is many to add the shell type transformer coil leakage field group that is designed to the alternating expression winding, and every group of leakage field is little, so the corresponding short-circuit force of shell type transformer is little than core type, has better anti-short circuit capability.
Existing shell type transformer iron core has all adopted the core limb in rectangle cross section, and iron core surrounds coil outside, and coil section also is enclosed within on the core limb for rectangle, and there is return yoke on both sides.Coil windings tightens together by brace summer and insulating part and core limb, in the horizontal direction, core lamination and fuel tank and winding are all with the very high timber wedge jam-pack of intensity, this structure is to bear the major part of coil short power by unshakable in one's determination and oil tank wall conduct, and for winding supporting construction is set no longer separately.
Summary of the invention
The object of the invention mainly is the shortcoming that overcomes existing amorphous alloy transformer, improves the amorphous alloy transformer anti-short circuit capability, proposes a kind of shell-type machine body structure that is suitable for amorphous alloy transformer.
Non-crystaline amorphous metal shell type transformer machine body structure of the present invention is made of the square coil of non-crystaline amorphous metal shell-type iron core, interlaced arrangement and the structural support of iron core and coil.Wherein structural support comprises: be centered around the iron yoke unshakable in one's determination outside " ∪ " type epoxy resins insulation folder, be arranged on the coil support plate that above and below unshakable in one's determination is looped around the outer frame type metallic framework of every phase winding, is arranged on ring in every phase winding, structural support also comprises the insulating part of filling between pressing plate folder unshakable in one's determination below the outer square frame skeleton of the every phase coil of brace summer, dry-type transformer of iron core on the tank wall of oil tank of transformer (or gas tank) and coil and each supporting structure.
Of the present inventionly specifically be characterised in that:
Three-phase shell-type iron core of the present invention is the core construction of many frames, both can adopt common three-phase shell-type core construction, also can adopt composite type three-phase shell-type core construction.
The winding wire cake of phase winding of the present invention is the flat rectangular shape, and every phase winding high-voltage coil and low-voltage coil is interlaced arrangement vertically, inserts molded insulator between the line cake.
The present invention design has the structural member with winding unshakable in one's determination to support, and makes unshakable in one's determination and winding is stressed does not disturb mutually, and short-circuit force is not delivered to amorphous alloy in the heart.Concrete structure is:
On the three-phase shell-type iron yoke unshakable in one's determination four sections ∪ type epoxy resins insulation folders are set, four sections folders round along the iron yoke outside, and every section ∪ type folder is fixed on iron yoke surface by insulated bolt.In existing shell type transformer structure, clamping structure unshakable in one's determination is with the very high timber wedge jam-pack of intensity between core lamination and fuel tank and the winding, oil tank wall and winding when iron core is stressed, have very big mutual frictional force as the location of iron core in the core lamination junction.But in amorphous alloy transformer, amorphous alloy core can't directly bear big like this external force effect, therefore earlier at the arranged outside ∪ of iron yoke type insulation folder, fixed the displacement of level unshakable in one's determination and vertical direction, made core construction become the integral body of an independent support.Such structure also makes the outside active force of location unshakable in one's determination of giving act on ∪ type insulation folder, has reduced itself stressed unshakable in one's determination.
There are two frame type metallic frameworks in the every phase winding outside, lays respectively at non-crystaline amorphous metal shell-type iron core both sides up and down, coil by insulation board by square frame skeleton banding.In the existing shell type transformer structure, winding coil is compressed by the support beam on unshakable in one's determination and the oil tank wall, and the short-circuit force that coil is subjected to need be overcome by iron core.And in the present invention, every phase winding outside frame type metallic framework is used for compressing the axial and radial outside of coil, thereby offsets the short-circuit force of this coil on this both direction, and short-circuit force is not affacted on the non-crystaline amorphous metal shell-type iron core.
The inboard of phase winding makes the inside radial load of coil coil when short circuit not oppress the amorphous alloy stem by the coil support plate that insulating part constitutes.
Transformer device structure of the present invention can be the amorphous alloy transformer that has fuel tank or gas tank, and this moment, the fuel tank (or gas tank) of transformer was made up of upper, middle and lower three joint casings.Middle joint box inside has the support beam, and the support beam is by the square frame skeleton outside the every phase coil of insulation board stretching upside unshakable in one's determination, and the lower box body is designed to suitable shape fuel tank, directly compresses the outer square frame skeleton of the every phase coil of downside unshakable in one's determination by tank wall.The short-circuit force of coil all will be delivered on the square frame skeleton and tank wall in the outside like this, rather than affact amorphous alloy in the heart.Simultaneously, in, the lower box body can give the non-crystaline amorphous metal shell-type location unshakable in one's determination again, because core limb, the iron yoke outside have " ∪ " type folder, also make iron core be subjected to smaller mechanical force.
Transformer device structure of the present invention can also be a dry type amorphous alloy transformer of not being with fuel tank or gas tank, and this moment, the transformer body bottom was equipped with bottom bracket and pad pin, and the outer square frame skeleton of the every phase coil of bottom bracket and bottom unshakable in one's determination downside unshakable in one's determination is connected as a single entity.The outer square frame skeleton of every phase coil has the pressing plate that covers the iron yoke near a side unshakable in one's determination, and iron yoke pressing plate up and down connects by the outer screw rod of iron yoke.Go up lower platen like this and can fix non-crystaline amorphous metal shell-type position unshakable in one's determination, because there is " ∪ " type folder in the outside, iron yoke edge, also make iron core be subjected to smaller mechanical force simultaneously.
The present invention compared with prior art has following advantage owing to adopted above technical scheme:
1, compares with traditional shell type transformer, designed the outer frame type skeleton of every phase winding among the present invention, the winding compressing structure is established one's own system, and its short-circuit force is not delivered to amorphous alloy in the heart, and unshakable in one's determination by " ∪ " type insulation folder hang with supporting surface independently on.These designs adapt to the particularity of amorphous alloy cores, make unshakable in one's determination and winding is stressed does not disturb mutually, have further improved the anti-short circuit capability of this transformer.
2 and make the shell-type amorphous alloy transformer compared to traditional heart type structure amorphous alloy transformer, owing to adopt the alternating expression winding, the leakage field group is divided into many groups by symmetry, and magnetic leakage flux obviously reduces, and electromagnetic force reduces.Greatly improved anti-short circuit capability.
3, the dimensional weight of shell-type amorphous alloy transformer, oil mass and floor space reduce, and compact conformation is convenient to transportation.
4, the line cake of shell-type amorphous alloy transformer is if vertically assemble, and the vertical oil duct on line cake surface makes oil that good heat loss through convection be arranged, and obtains good cooling effect.
5, shell-type amorphous alloy transformer coil cake number is few, and every cake area is big, and electric capacity is big between cake, and line cake direct-to-ground capacitance is little, adopts
Description of drawings
Fig. 1 is the structural representation of embodiment of the present invention one.
Among the figure: save on casing, 18 lower box bodies, the 19 tank walls support beam, 110 in supporting bracket, 5 coil former type skeletons, 6 insulation boards, 17 in 1 non-crystaline amorphous metal shell-type iron core, 2 winding coils, 3 " ∪ " sections yoke insulation folder, 4 coils and save casing.
Fig. 2 is the structural representation of embodiment of the present invention two.
Among the figure: the positioning pressuring plate up and down, 28 of 27 iron cores is worn screw rod, 29 bottom brackets, 210 pad pin.
Fig. 3 is the structural representation of iron yoke of the present invention outside ∪ type insulation folder.Among the figure: 31 iron yokes, 32 ∪ types insulation folder, 33 are pressed screw rod, 34 nuts.
Fig. 4 is the common three-phase shell-type core construction schematic diagram that the present invention adopts.
Fig. 5 is the composite type three-phase shell-type core construction schematic diagram that the present invention adopts.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Fig. 1 is the specific embodiment of the present invention one: the shell-type amorphous alloy transformer that has fuel tank or gas tank.Here can transformer oil or oil resistant in the oil tank of transformer; If the using gases insulation can be sulfur hexafluoride gas in the gas tank, or fluorine carbon gas, or inert gas, or compressed air, or nitrogen, or carbon dioxide etc.
As shown in Figure 1, the non-crystaline amorphous metal shell-type iron core 1 usefulness amorphous alloy strips of present embodiment is reeled and is formed, and the cross section is a rectangle.The structure of non-crystaline amorphous metal shell-type iron core 1 can be common three-phase shell-type core construction shown in Figure 4, be that core limb is connected in three phase windings, iron yoke between phase winding has only a magnetic circuit, also can be composite type three-phase shell-type core construction shown in Figure 5, promptly the iron yoke between phase winding is divided into two independent magnetic circuits.
The coil 2 line cakes of present embodiment are the flat rectangular shape, form with lead coiling on the rectangular lines mould.Phase winding is formed by several line cake closed assemblies, inserts molded insulator between the line cake, and every phase winding high-voltage coil and low-voltage coil is interlaced arrangement vertically.
On the three-phase of the present embodiment iron yoke unshakable in one's determination four sections ∪ type epoxy resins insulation folders 3 are set, as shown in Figure 3, four sections epoxy resins insulation ∪ type 32 folders round along iron yoke 31 outsides, and every section ∪ type folder is pressed screw rod 33 nuts 34 and is fixed on iron yoke 31 surfaces by insulation.
The coil support plate 4 that is made of insulating part has been placed in the inboard of present embodiment phase winding 2, as shown in Figure 1, coil support plate 4 is positioned at coil inboard radially, is looped around outside the core limb, makes the width of cloth of coil coil when short circuit not oppress non-crystaline amorphous metal shell-type iron core 1 to power.
Respectively there is a frame type metallic framework 5 outside of each phase winding 2 of present embodiment in the upper and lower of non-crystaline amorphous metal shell-type iron core 1 respectively.2 of square frame shape skeleton 5 and phase windings are by insulation board 6 stretchings, and square frame shape skeleton 5 lower ends do not contact with non-crystaline amorphous metal shell-type iron core 1 surface, between certain interval is arranged.
The fuel tank of present embodiment or gas tank are made up of last joint casing 110, middle joint casing 17, lower box body 18 3 joint square box.There is outstanding support beam 19 middle joint casing 17 inboards, and support beam 19 is by the square frame skeleton 5 in the every phase coil of the insulation board 6 stretchings outside, and lower box body 18 is designed to fit the shape fuel tank, directly compress the outer square frame skeleton 5 of the every phase coil of non-crystaline amorphous metal shell-type 1 downside unshakable in one's determination by tank wall.The short-circuit force of coil all will be delivered on the square frame skeleton 5 and tank wall in the outside like this, rather than affact on the non-crystaline amorphous metal shell-type iron core 1.
The fuel tank of present embodiment or gas tank: the support of the non-crystaline amorphous metal shell-type iron core 1 that middle joint casing 17, lower box body 18 are placed as accumbency again, non-crystaline amorphous metal shell-type iron core 1 is fixed between the outstanding support beam 19 of two fuel-economizing casees by ∪ type folder 3, because there is ∪ type folder 3 in non-crystaline amorphous metal shell-type 1 outside unshakable in one's determination, also makes non-crystaline amorphous metal shell-type iron core 1 be subjected to smaller mechanical force.
Fig. 2 is the specific embodiment of the present invention two: the shell-type amorphous alloy transformer of dry type.
The non-crystaline amorphous metal shell-type of this execution mode unshakable in one's determination 1 is identical with execution mode one with coil 2 structures.
As shown in Figure 2, present embodiment is provided with the square frame shape skeleton 5 of supporting bracket 4 and winding outside in the iron yoke ∪ type insulation folder 3 identical with execution mode one, the coil equally.
What present embodiment and execution mode one were different is that device body bottom is equipped with bottom bracket 29 and pad pin 210, and the outer square frame skeleton 5 of bottom bracket 29 and non-crystaline amorphous metal shell-type 1 downside phase coil unshakable in one's determination is connected as a single entity.Square frame skeleton 5 outside every phase coil 2 has the positioning pressuring plate up and down 27 that covers iron yoke 31 near a side of non-crystaline amorphous metal shell-type iron cores 1, and the pressing plate 27 of iron yoke about in the of 31 connects by the iron yoke 31 outer screw rods 28 of wearing.Positioning pressuring plate 27 can be fixed non-crystaline amorphous metal shell-type 1 position unshakable in one's determination so up and down.
Claims (3)
1, a kind of device body of non-crystaline amorphous metal shell type transformer comprises non-crystaline amorphous metal shell-type iron core (1), square coil, it is characterized in that, described non-crystaline amorphous metal shell-type iron core (1) is made for amorphous alloy material; Described square coil interlaced arrangement; The structural support of described coil comprises the ∪ type epoxy resins insulation folder (3) that is centered around iron yoke unshakable in one's determination (31) outside, is arranged on non-crystaline amorphous metal shell-type iron core (1) above and below, is looped around the outer frame type metallic framework (5) of every phase winding (2), is arranged on the inboard coil support plate (4) of every phase winding (2); Every phase winding (2) high-voltage coil and low-voltage coil is interlaced arrangement vertically, the coil support plate (4) that the inboard of phase winding (2) is made of insulating part, the outside of each phase winding (2), in the upper and lower of non-crystaline amorphous metal shell-type iron core (1) a frame type skeleton (5) is arranged respectively respectively, phase winding (2) passes through insulation board (6) by square frame skeleton (5) banding.
2, the device body of non-crystaline amorphous metal shell type transformer according to claim 1, it is characterized in that, in transformer device structure with fuel tank or gas tank, the support beam of middle joint casing (17) is by the square frame skeleton (5) in the every phase winding of insulation board (6) the stretching outside, lower box body (18) is designed to suitable shape fuel tank, directly compresses the outer square frame skeleton (5) of the every phase winding of non-crystaline amorphous metal shell-type iron core (1) downside by tank wall; Save casing (17) and lower box body (18) simultaneously and give non-crystaline amorphous metal shell-type iron core (1) location.
3,, the device body of non-crystaline amorphous metal shell type transformer according to claim 1, it is characterized in that, in the dry type non-crystaline amorphous metal transformation structure, the outer square frame skeleton (5) of every phase winding is equipped with the positioning pressuring plate up and down (27) that covers iron yoke (31) near non-crystaline amorphous metal shell-type iron core (1) one side, iron yoke (31) positioning pressuring plate (27) up and down connects by the outer screw rod (28) of iron yoke (31), fixedly non-crystaline amorphous metal shell-type iron core (1).
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| CN2008101165542A CN101388279B (en) | 2008-07-11 | 2008-07-11 | Body of shell type amorphous alloy transformer |
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| CN2008101165542A CN101388279B (en) | 2008-07-11 | 2008-07-11 | Body of shell type amorphous alloy transformer |
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| CN101388279A true CN101388279A (en) | 2009-03-18 |
| CN101388279B CN101388279B (en) | 2011-08-24 |
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| CN102097870A (en) * | 2010-12-17 | 2011-06-15 | 中国科学院电工研究所 | Linear electric motor stator made of amorphous alloy material |
| CN102054563B (en) * | 2009-10-30 | 2012-08-01 | 黄上立 | Novel seamless coiled core transformer |
| CN102709030A (en) * | 2012-02-01 | 2012-10-03 | 鸿康磁业电子（昆山）有限公司 | Transformer |
| CN101916642B (en) * | 2008-11-21 | 2013-07-17 | 株式会社东芝 | Stationary induction unit |
| CN103268811A (en) * | 2013-05-27 | 2013-08-28 | 遵义桦坤节能设备有限公司 | 35KV novel shell type power transformer body structure |
| CN104376992A (en) * | 2014-11-20 | 2015-02-25 | 华北电力大学 | Physical structure of series coupling transformer |
| CN105575630A (en) * | 2016-03-04 | 2016-05-11 | 特变电工股份有限公司 | Supporting structure for improving short-circuit resisting ability of power transformer and realizing method thereof |
| CN106683879A (en) * | 2017-03-17 | 2017-05-17 | 保定天威保变电气股份有限公司 | Process for processing shell type transformer insulating partition board |
| CN107546012A (en) * | 2017-09-29 | 2018-01-05 | 佛山市中研非晶科技股份有限公司 | A kind of amorphous alloy oil immersion type transformer of noise reduction and anti-sudden short circuit |
| CN109786068A (en) * | 2019-01-31 | 2019-05-21 | 上海置信电气非晶有限公司 | A kind of shock resistance support construction and transformer applied to amorphous plane reeling iron core body |
| CN110085401A (en) * | 2019-05-17 | 2019-08-02 | 沈阳工业大学 | Amorphous alloy transformer winding skeleton with anti-short circuit capability and preparation method thereof |
| CN110534312A (en) * | 2019-09-23 | 2019-12-03 | 北京中热信息科技有限公司 | A kind of New single-phase energy-economic transformer and its manufacturing method |
| CN112635181A (en) * | 2020-11-18 | 2021-04-09 | 上海置信电气非晶有限公司 | Assembly method of amorphous alloy oil-immersed transformer body insulation structure |
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| US4663605A (en) * | 1985-12-24 | 1987-05-05 | General Electric Company | Clamping means for the core and coil assembly of an electric transformer |
| CN2387620Y (en) * | 1999-03-03 | 2000-07-12 | 上海置信变压器有限公司 | Amorphous alloy drying transformer |
| JP2001160513A (en) * | 1999-12-01 | 2001-06-12 | Hitachi Ltd | Amorphous wound core transformer |
| CN2459743Y (en) * | 2001-01-10 | 2001-11-14 | 西安非晶科技有限公司 | Core structure for three-phase oil-immersed non-crystalline transformer |
| CN2508365Y (en) * | 2001-11-30 | 2002-08-28 | 上海置信电气股份有限公司 | Amorphous alloy transformer body structure |
| TWI243387B (en) * | 2003-12-17 | 2005-11-11 | Tatung Co Ltd | Vertical assembly method and structure for amorphous iron-cored transformer |
| CN100498991C (en) * | 2004-12-03 | 2009-06-10 | 上海置信电气股份有限公司 | Structure of amorphous alloy iron core dry distribution transformer body |
| CN101192467B (en) * | 2006-11-22 | 2011-09-21 | 上海置信电气非晶有限公司 | Amorphous alloy ground transformer body structure |
| DE202007007130U1 (en) * | 2007-05-18 | 2007-08-16 | Sunrise Power Transformers Gmbh | Amorphous metal alloy and aluminum foils used transformers |
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| CN101916642B (en) * | 2008-11-21 | 2013-07-17 | 株式会社东芝 | Stationary induction unit |
| CN102054563B (en) * | 2009-10-30 | 2012-08-01 | 黄上立 | Novel seamless coiled core transformer |
| CN102097870A (en) * | 2010-12-17 | 2011-06-15 | 中国科学院电工研究所 | Linear electric motor stator made of amorphous alloy material |
| CN102709030A (en) * | 2012-02-01 | 2012-10-03 | 鸿康磁业电子（昆山）有限公司 | Transformer |
| CN103268811A (en) * | 2013-05-27 | 2013-08-28 | 遵义桦坤节能设备有限公司 | 35KV novel shell type power transformer body structure |
| CN104376992A (en) * | 2014-11-20 | 2015-02-25 | 华北电力大学 | Physical structure of series coupling transformer |
| CN105575630A (en) * | 2016-03-04 | 2016-05-11 | 特变电工股份有限公司 | Supporting structure for improving short-circuit resisting ability of power transformer and realizing method thereof |
| CN106683879B (en) * | 2017-03-17 | 2018-08-31 | 保定天威保变电气股份有限公司 | A kind of processing technology of shell type transformer insulating barrier |
| CN106683879A (en) * | 2017-03-17 | 2017-05-17 | 保定天威保变电气股份有限公司 | Process for processing shell type transformer insulating partition board |
| CN107546012A (en) * | 2017-09-29 | 2018-01-05 | 佛山市中研非晶科技股份有限公司 | A kind of amorphous alloy oil immersion type transformer of noise reduction and anti-sudden short circuit |
| CN109786068A (en) * | 2019-01-31 | 2019-05-21 | 上海置信电气非晶有限公司 | A kind of shock resistance support construction and transformer applied to amorphous plane reeling iron core body |
| CN109786068B (en) * | 2019-01-31 | 2024-04-16 | 上海置信电气非晶有限公司 | Impact-resistant supporting structure applied to amorphous planar coiled iron core body and transformer |
| CN110085401A (en) * | 2019-05-17 | 2019-08-02 | 沈阳工业大学 | Amorphous alloy transformer winding skeleton with anti-short circuit capability and preparation method thereof |
| CN110085401B (en) * | 2019-05-17 | 2024-04-09 | 沈阳工业大学 | Amorphous alloy transformer winding framework with short circuit resistance and manufacturing method thereof |
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| CN112635181A (en) * | 2020-11-18 | 2021-04-09 | 上海置信电气非晶有限公司 | Assembly method of amorphous alloy oil-immersed transformer body insulation structure |
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