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WO2025153219A1 - Système de fixation de bloc de bobine pour transformateur et transformateur - Google Patents

Système de fixation de bloc de bobine pour transformateur et transformateur

Info

Publication number
WO2025153219A1
WO2025153219A1 PCT/EP2024/083554 EP2024083554W WO2025153219A1 WO 2025153219 A1 WO2025153219 A1 WO 2025153219A1 EP 2024083554 W EP2024083554 W EP 2024083554W WO 2025153219 A1 WO2025153219 A1 WO 2025153219A1
Authority
WO
WIPO (PCT)
Prior art keywords
supporting plate
coil block
coil
fixation system
rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/083554
Other languages
English (en)
Inventor
Luigi DE-MERCATO
Vito MURGIDA
Sauro VANNICOLA
Marcos Ivan TRIBESS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Energy Ltd
Original Assignee
Hitachi Energy Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Energy Ltd filed Critical Hitachi Energy Ltd
Publication of WO2025153219A1 publication Critical patent/WO2025153219A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/06—Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support

Definitions

  • the coil block includes a f irst elementhaving atleastone supporting surface for contacting the atleastone coilwinding and a firstclamping surface, and a second element having fastening means and a s econd clamping surface forcontacting the firstclamping surface to restrictrotation ofthe coilblock.
  • the documents CN 217181983 U, JP 2004207330 A an d CN 106 298198 A disclose furthersetupsoftransformers or componentsthereof. Extreme loading conditionshave to be counteracted to contribute to a longerservice life and a reliable operation ofthe transformerand itswindings.Consequently, itisa task to provide a system for a transformer that ena bles to withstand such challenging operationalconditions.
  • the coil block fixa tion system further comprises at least two rods that are coupled to an upper surface of the supporting plate opposit e the bottom surface ofthe supporting plate forsetting a load to the supporting plate towards the coil block body.
  • T he supporting plate and the coil block body are formed geometricallyin coordination with each othersuch thatat least one of the supporting plate and the coil bloc k body comprises one or more recesses and the other one of the supporting plate and the coilblockbodycomprises one or more protrusion that extends into the corresponding recess of supporting plate or the coil block body.
  • the protru sion within the recess forms a respective movement limit er to counteract a translation and/or a rotation of the s upporting plate relative to the coilblockbody.
  • the coil block fixation system the supporting plate further comprises a first lateral recess formed at a side s urface of the supporting plate and the coil block body compri ses a corresponding protrusion that forms a lateral movem ent limiter extending into the lateral recess of the su pporting plate.
  • the supporting plate further comprises a second lat eral recess formed at a lateral side surface of the supp orting plate opposite the first lateral recess.
  • the coil b lock body P2024,0013 WO N /P230186WO01 November26,2024 -3 - comprises a further corresponding protrusion that f orms a further lateral movement limiter extending into the second lateral recess of the supporting plate.
  • the s upporting plate comprises a substantially rectangular externa l shape with four outer edges or corners, and the supportin g plate including the opposite first end second lateral rec esses substantiallyhasan H-shape with respectto a top view onto the uppersurfaces.
  • a transform er is feasible that enables to withstand accelerations du e to high loadsduring operation,transportation and others.
  • the fixation system provides a specific design of the c oil block body in coordination with the supporting plate on t op which allows for an advantageous configuration with parti cular high mechanicalstabilityofthe transformerin view of compensation ofmovementsthatare unavoidable.
  • the supporting plate can comprise a lateral movement limiter formed at a sid e surface of the supporting plate extending into a lateral re cess of the coil block body formed in an upper surface or w all of the coil block body, for example formed in the describe d protruding wall of the coil block body.
  • a lateral movement limiter can reliably counteract an unwanted rotation ofthe supporting plate around an axisof rotation which may be parallel to a longitudinal axis of the elongated rod substantially.
  • a lateral mov ement limiter can counteract an unwanted translation in d irected limited by a recess contour of the coil block body.
  • the three rods and the corresponding spri ng washers or spring element can provide equal or different lo cal loads to the supporting plate.Differentlocalloadscan be realized by using different spring elements includi ng different material or elastic properties and/or a d ifferent number of spring elements. This analogously applies to a configuration with two rods and associated spring e lements.
  • the coil block fixation system merel y comprises one rod and at least one corresponding sp ring element coupled to the upper surface of the support ing plate forsetting a load to the supporting plate towards the coil block body. In order to provide an enhanced stabili ty and to withstand high loads two, three or more rods are pr eferred.
  • Th e coil block fixation system can be realized as a H-shaped flange fixation that allows for stable and reliable operat ion of the transformer in particular in view of shock and sine beat load requirements due to its spring washers and the spec ific design options which contribute to an enhanced over all robustness.
  • the specifically shaped supporting plate and coil b lock body preferably in interaction with the specific rods an d associated spring elements, are specifically engine ered to withstand high acceleration shocks.
  • the coil block fixation system ca n contribute to prevent structural damages and perfor mance issues under extreme loading condition.
  • the H-shape d supporting plate can reliably provide mechanical st ability and shock resistance of the coil block fixation sys tem and the corresponding transformer.
  • the spring elements preferably formed as spring washers, can reliably a bsorb thermal dilatation of a winding or coil of the tran sformer while maintaining beneficial stiffness, specificall y tuned, to withstand dynamic loads.
  • an overall resili ence and performance of transformers can be improved even in view of high acceleration shocks.
  • the described configurati ons of the coil block fixation system can provide a beneficial compromise between the necessity for having a stiff coil- block to support the windings or coils of the trans former being subject to extreme loads and, at the same tim e, providing a sufficient room for the thermal expansi on of the windings or coils.
  • the coil block body may comprise a bulky structure itself with some protrusions and/or reces ses that serve as interface for the supporting plate and the assembled P2024,0013 WO N /P230186WO01 November26,2024 -11 - rods and spring washers.
  • the rods form pins through which a proper pre-load on the coils of the transformer can be applied.
  • the combination ofthe preload and spring washers' stiffness can advantageously contribute to required stability and robustnessofthe transformer.
  • the described coil block fixation system can contri bute to an enhanced lifetime or service life, can allow for ea sy mounting and also passes several tough requirements including sine beat tests based on increasing amplitudes with fixed frequencyrequirementsbya customer.
  • the coil block fixation system passes mechanical resonance c homes due to the counteracting damping set up by the describe d configurations. Exemplary embodiments are explained in the followin g with the aid of schematic drawings and reference numbers.
  • Th e figures show: Figure 1 an embodiment of a coil block fixation sys tem for a transformerin a perspective view, Figure 2 a cross section side view of components of the coil blockfixation system offigure 1,and Figure 3 an embodiment of a coupling structure incl uding a plurality of the coil block fixation systems couple d to a transformer.
  • the accompanying figures are included to provide a further understanding.
  • Identical reference numbers designat e elements or components with identical functions. In so far a s elements or components correspond to one another in terms of their P2024,0013 WO N /P230186WO01 November26,2024 -12 - function in different figures, the description ther eof is not repeated for each of the following figures.
  • Figure 1 illustrates a perspective view an embodime nt of a coil block fixation system 30 for a transformer.
  • Th e coil block fixation system 30 comprises a coil block bod y 10 with a bottom surface 24 and an upper surface 23 opposit e the bottom surface 24.
  • the bottom surface 24 is configu red for coupling to a coil 19 of the transformer by means o f a contact element 20, such as a rubber pad or silicon rubber.
  • the coil block fixation system 30 further comprises a supporting plate 1 with a bottom surface 22 and an upper surface 21 opposite the bottom surface 22.
  • the bott om surface 22 is coupled to the upper surface 23 of the coil b lock body 10.
  • the protruding body wall 15 is adjacent to an inner edg e of the supporting plate 1 and can reliably counteract an u nwanted translation movement of the supporting plate toward s the centre in x-direction.
  • the protruding bodywall 15 in contact with the adjacent edge of the support ing plate 1 counteractsan unwanted rotationalmovement.
  • the protrusions and/or recesses of the supporting plate 1 and the coil block body 10 are designed such that the suppo rting plate 1 tightlyfitsinto the coilblockbody10.
  • the coil block fixation system 30 further comprises two rods 3 that are coupled to the upper surface 21 of the s upporting plate for setting a load to the supporting plate to wards the coil block body.
  • the rod sleeve 7 limits the associated rod 3 and P2024,0013 WO N /P230186WO01 November26,2024 -15 - the positioning element 4 tilting while still leavi ng their translation in vertical direction free.
  • the supporting plate 1 can furthercomprise one or more lateral protrusion at an outer side surface. Such a lateral protrusion can form a further lateral movement limi ter that extendsinto a corresponding lateralrecessformed in the coil block body 10.
  • the spring washers 2 are installed around t he associated sliding guide sleeve 27 and can be verti cally P2024,0013 WO N /P230186WO01 November26,2024 -18 - movable with it.
  • the nuts 5 enable fine-tuning the pre-load of the s pring washers 2 and affect their interaction with the sup porting plate 1 and the coilblockbody10.
  • the respective nut5 serves a dual purpose of adjusting the pre-load and securing the coil block body 10 in place.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Springs (AREA)

Abstract

L'invention concerne un système de fixation de bloc de bobine (30) pour un transformateur comprenant un corps de bloc de bobine à coupler à une bobine (19) du transformateur, et une plaque de support qui est couplée à une surface supérieure (23) du corps de bloc de bobine (10) opposée à une surface inférieure (24) du corps de bloc de bobine (10). Le système de fixation de bloc de bobine (30) comprend en outre au moins deux tiges (3) qui sont couplées à une surface supérieure (21) de la plaque de support (1) opposée à une surface inférieure (22) de la plaque de support (1) pour fixer une charge sur la plaque de support (1) vers le corps de bloc de bobine (10). La plaque de support (1) et le corps de bloc de bobine (10) sont formés géométriquement en coordination l'un avec l'autre de telle sorte que l'un comprend au moins un évidement (13, 14) et l'autre comprend au moins une saillie (9, 16) qui s'étend dans l'évidement correspondant (13, 14) formant un limiteur de mouvement respectif pour contrebalancer une translation et/ou une rotation de la plaque de support (1) par rapport au corps de bloc de bobine (10).
PCT/EP2024/083554 2024-01-16 2024-11-26 Système de fixation de bloc de bobine pour transformateur et transformateur Pending WO2025153219A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP24382039.6 2024-01-16
EP24382039.6A EP4589611A1 (fr) 2024-01-16 2024-01-16 Système de fixation de bloc de bobine pour transformateur et transformateur avec ce système

Publications (1)

Publication Number Publication Date
WO2025153219A1 true WO2025153219A1 (fr) 2025-07-24

Family

ID=89620772

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/083554 Pending WO2025153219A1 (fr) 2024-01-16 2024-11-26 Système de fixation de bloc de bobine pour transformateur et transformateur

Country Status (2)

Country Link
EP (1) EP4589611A1 (fr)
WO (1) WO2025153219A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004207330A (ja) 2002-12-24 2004-07-22 Hitachi Ltd 静止誘導電器の巻線締付構造
KR100827687B1 (ko) * 2006-11-29 2008-05-07 신한전기공업주식회사 변압기용 조립형 스페이서 및 이를 구비한 변압기
CN203706822U (zh) * 2014-03-11 2014-07-09 浙江马克变压器有限公司 一种干式变压器的线圈压紧单元
CN106298198A (zh) 2016-10-14 2017-01-04 国家电网公司 一种干式变压器及其垫块压紧结构
EP3817015A1 (fr) 2019-10-31 2021-05-05 ABB Power Grids Switzerland AG Conception de blocs de bobine de transformateur pour application sismique
CN217181983U (zh) 2022-03-28 2022-08-12 山东达驰电气有限公司 一种提高塔筒变压器抗振动和冲击的结构
CN218299572U (zh) * 2022-06-17 2023-01-13 海南金盘智能科技股份有限公司 一种干式变压器线圈垫块弹性压紧防松结构

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004207330A (ja) 2002-12-24 2004-07-22 Hitachi Ltd 静止誘導電器の巻線締付構造
KR100827687B1 (ko) * 2006-11-29 2008-05-07 신한전기공업주식회사 변압기용 조립형 스페이서 및 이를 구비한 변압기
CN203706822U (zh) * 2014-03-11 2014-07-09 浙江马克变压器有限公司 一种干式变压器的线圈压紧单元
CN106298198A (zh) 2016-10-14 2017-01-04 国家电网公司 一种干式变压器及其垫块压紧结构
EP3817015A1 (fr) 2019-10-31 2021-05-05 ABB Power Grids Switzerland AG Conception de blocs de bobine de transformateur pour application sismique
CN217181983U (zh) 2022-03-28 2022-08-12 山东达驰电气有限公司 一种提高塔筒变压器抗振动和冲击的结构
CN218299572U (zh) * 2022-06-17 2023-01-13 海南金盘智能科技股份有限公司 一种干式变压器线圈垫块弹性压紧防松结构

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