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EP3062320B1 - Système destiné à réduire le rayonnement du son de transformateurs ou bobines à refroidissement liquide - Google Patents

Système destiné à réduire le rayonnement du son de transformateurs ou bobines à refroidissement liquide Download PDF

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Publication number
EP3062320B1
EP3062320B1 EP15156920.9A EP15156920A EP3062320B1 EP 3062320 B1 EP3062320 B1 EP 3062320B1 EP 15156920 A EP15156920 A EP 15156920A EP 3062320 B1 EP3062320 B1 EP 3062320B1
Authority
EP
European Patent Office
Prior art keywords
assembly according
sandwich panel
boiler
wall
filler
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.)
Active
Application number
EP15156920.9A
Other languages
German (de)
English (en)
Other versions
EP3062320A1 (fr
Inventor
Anton HOLZER
Helmut Pregartner
Günter Pretterhofer
Alfons-Karl Schrammel
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.)
Siemens AG
Original Assignee
Siemens AG
Siemens Corp
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
Priority to EP15156920.9A priority Critical patent/EP3062320B1/fr
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to PL15156920T priority patent/PL3062320T3/pl
Priority to EP16702043.7A priority patent/EP3224842A1/fr
Priority to US15/552,360 priority patent/US10777350B2/en
Priority to PCT/EP2016/051083 priority patent/WO2016134888A1/fr
Priority to CN201680012249.1A priority patent/CN107408447B/zh
Priority to CA2977715A priority patent/CA2977715C/fr
Publication of EP3062320A1 publication Critical patent/EP3062320A1/fr
Application granted granted Critical
Publication of EP3062320B1 publication Critical patent/EP3062320B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F27/33—Arrangements for noise damping
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches

Definitions

  • the invention relates generally to the technical field of electrical transformers or chokes, in particular to an arrangement for reducing the emission of operating noise of a liquid-cooled transformer or a choke.
  • the vibration excitation of the magnetic core or the electrical coil propagates through the insulating and cooling liquid on the walls of the boiler, so that they are excited to bending vibrations and emit operating noise in the outside.
  • the DE 1 293 329 For example, provides heavy outer panels, wherein the cavity between the outer panel and boiler wall is filled with plastic foam. Also in the DE 1 902 910 and the DE 2 309 564 It is proposed to fill the cavity formed between the cover plate and reinforcement with an easily deformable polyurethane foam.
  • sandwich panels are arranged on the outside of the boiler of a liquid-cooled transformer or a throttle, which act as insulating elements.
  • Each sandwich panel has a hermetically sealed cavity.
  • In the cavity is a composition of a polymeric material and a filler, which composition has a specific gravity of> 2 grams per cubic centimeter.
  • the cavity is completely enclosed by a metallic wall. This hermetic encapsulation ensures that the polymeric material is completely sealed off from external influences.
  • the aging behavior of the polymer during a long period of operation is substantially unchanged and experiences little change in its physical property.
  • epoxy resin as a polymer material is a Metal-plastic compound created that is not flexible in contrast to the prior art, but forms a relatively rigid sandwich construction whose mass is increased by a filler.
  • the sandwich panel according to the invention is comparatively heavier than a metal-plastic-metal construction, but not so difficult that its attachment to the outer wall of the boiler would cause problems.
  • the filling material is particularly well suited for a material with a high specific weight, for example a metal. Particularly cost-effective is the use of so-called Stahlstrahlgut, which are steel grains with a diameter, for. in the range of 1 to 2 mm. Steel blasting material as filler is inexpensive. It is commercially available and is used industrially, for example, for surface treatment.
  • a cost-effective filling material can also be a mineral material, such as quartz sand.
  • a parallelepiped with a rectangular cross-section is particularly easy to install on the outer peripheral surface of the boiler, either between projecting boiler stiffeners or on their front side.
  • each sandwich panel is arranged on the outside between two projecting stiffeners, wherein it completely covers the region of the boiler wall lying between the stiffeners.
  • the connection between sandwich panel and stiffener can be inexpensively produced by a welded joint.
  • Another particularly preferred embodiment of the invention may be constructed so that each sandwich panel is secured to an end face of a stiffener with the interposition of an elastic element by means of a releasable connection.
  • a transformer already in operation or a throttle with sound-absorbing sandwich panels can be retrofitted.
  • an elastic element for example a rubber strip (neoprene or cellular rubber), is arranged between the sandwich panel and the boiler wall or stiffening of the boiler wall.
  • This mechanical decoupling between the insulating panel and the boiler makes it possible to reduce the emission of operating noise particularly efficiently.
  • FIG. 1 shows in a perspective view of a boiler 1 of a transformer, not shown, or a throttle.
  • the boiler 1 has side walls 2, which are provided on their outside with vertically arranged stiffeners 3.
  • Boiler 1 and stiffeners 3 are made of a steel sheet and welded together.
  • the stiffeners 3 can be designed differently, for example as reinforcing ribs or in the form of a profile (eg a U-profile with 150 mm side length and 250 mm leg connection part). They give the boiler 1 mechanical stability, especially in the phase of manufacture, when the interior of the boiler is subjected to a negative pressure.
  • the rectangular region 4 between the stiffeners 3 is excited in operation to bending vibrations and is covered with sandwich panels 5 (in FIG.
  • sandwich panels 5 act as Dämmpaneele, ie they reduce the noise emission occurring during operation.
  • the sandwich panels 5 are plate-shaped structures, which are arranged vertically in their longitudinal extent on the outside of the boiler 1. With their areal extent they cover the bending-vibrating area 4.
  • the sandwich panel 5 is in the The width of the cover plate corresponds to the distance between two stiffeners 3, that is, in a power transformer, for example 600 mm to 800 mm.
  • FIG. 2 shows in a cross section a section between two stiffeners 3.
  • the stiffeners 3 are formed in the form of a U-profile.
  • the legs of the U-profile are welded to the side wall 2 of the boiler.
  • the area 4 of the boiler wall 2 between adjacent opposite legs 3 of the U-profile is covered by a sandwich panel 5.
  • the sandwich panel 5 has a substantially rectangular cross section.
  • a metallic wall 6 surrounds a cavity 7.
  • the cavity 7 is filled with a polymeric material 8 containing a filler 9.
  • the composition between the polymeric material 8 and a filler 9 is selected so that this composition has a specific gravity of at least 2 g / cm 3.
  • the polymer material 8 is an epoxy resin and the filler 9 is a steel blasting material, which are steel grains with a diameter of 1 to 2 mm.
  • This composition of epoxy resin 8 and steel stock 9 has a specific gravity of about 5 g / cm 3 .
  • FIG. 2 is the sandwich panel 5 with the wall facing the boiler wall 2 6 with the interposition of an elastic member 11 at.
  • the elastic element 11 is formed by a plurality of rubber strips extending parallel to the stiffening 1. The rubber strips adhere to the side wall 2 and to the wall 6 by means of an adhesive bond.
  • the wall 6 forms a complete enclosure for the cavity 7, ie the cavity 7 is hermetically sealed.
  • the cavity 7 has an approximately rectangular cross-section. Less the wall thickness corresponds the width of the rectangle about the clear width between adjacent stiffeners 3, ie in a power transformer about 600 mm to 800 mm.
  • the narrow side of the rectangular cavity 7 is about 30 mm.
  • the wall 6 consists in the example shown of a two-piece sheet steel, wherein the one part has the shape of a tub, the other forms a lid on the tub.
  • the steel sheet has a thickness of about 5 mm. Tub and ceiling are welded together. As a result, the polymeric material contained in the cavity 7 8 is completely sealed off from external environmental influences and unaffected in its aging behavior.
  • FIG. 3 shows another preferred embodiment of the invention.
  • the area 4 between adjacent stiffeners 3 is completely covered by a sandwich panel 5.
  • the attachment of the sandwich panel 5 is carried out but not by a welded connection to the legs of the stiffener 3, but on a front side 12.
  • the sandwich panel 5 is screwed by means of screws 13 with the interposition of an elastomeric element 11 to the stiffener 3 .
  • the elastomeric element 11 consists of a strip or a strip of rubber.
  • the wall 6 and the area 4 are spaced apart.
  • the space between the sandwich panel 5 and the bending-vibrating area 4 is air space.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid Mechanics (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Building Environments (AREA)
  • Casings For Electric Apparatus (AREA)

Claims (10)

  1. Agencement destiné à réduire le rayonnement acoustique de transformateurs ou de bobines à refroidissement liquide, comprenant une cuve (1), qui présente des renforts (3) côté extérieur au niveau de ses parois latérales (2), dans lequel un secteur (4) se trouvant entre des renforts (3) est respectivement masqué grâce à un panneau-sandwich (5) fixé au niveau desdits renforts (3), dans lequel chaque panneau-sandwich (5) présente une paroi métallique (6) qui clôt de manière hermétique une cavité (7), dans lequel ladite cavité (7) est remplie d'une composition constituée d'un matériau polymère (8) et d'une matière de charge (9), et dans lequel la composition présente un poids spécifique supérieur à 2 grammes par centimètre cube.
  2. Agencement selon la revendication 1, caractérisé en ce que le matériau polymère (8) est une résine époxy.
  3. Agencement selon la revendication 1 ou 2, caractérisé en ce que la matière de charge (9) est un matériau métallique.
  4. Agencement selon la revendication 1 ou 2, caractérisé en ce que la matière de charge (9) est du sable de silice.
  5. Agencement selon la revendication 3 ou 4, caractérisé en ce que chaque panneau-sandwich (5) est réalisé en forme de quadrilatère.
  6. Agencement selon la revendication 5, caractérisé en ce que chaque panneau-sandwich (5) est agencé entre des renforts (3) voisins et la liaison entre une paroi métallique (6) d'un panneau-sandwich (5) et un renfort (3) est réalisée au moyen d'une soudure (10).
  7. Agencement selon la revendication 6, caractérisé en ce que chaque paroi (6), faisant office de paroi latérale (2) de la cuve (1), d'un panneau-sandwich (5) est agencée adjacente au secteur (4) avec interposition d'un élément élastique (11).
  8. Agencement selon la revendication 5, caractérisé en ce que chaque panneau-sandwich (5) est fixé au moyen d'une liaison amovible (13), avec interposition d'un élément élastique (11), au niveau d'une face avant (12), détournée de la paroi latérale (2) de la cuve (1), d'un renfort (3).
  9. Agencement selon la revendication 3, caractérisé en ce que la matière de charge métallique (9) est formée à partir d'un produit de sablage en acier.
  10. Agencement selon la revendication 7 ou 8, caractérisé en ce que l'élément élastique (11) est formé à partir d'une bande réalisée en un élastomère.
EP15156920.9A 2015-02-27 2015-02-27 Système destiné à réduire le rayonnement du son de transformateurs ou bobines à refroidissement liquide Active EP3062320B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
PL15156920T PL3062320T3 (pl) 2015-02-27 2015-02-27 Układ do redukcji emisji dźwięku przez chłodzone cieczą transformatory lub dławiki
EP15156920.9A EP3062320B1 (fr) 2015-02-27 2015-02-27 Système destiné à réduire le rayonnement du son de transformateurs ou bobines à refroidissement liquide
US15/552,360 US10777350B2 (en) 2015-02-27 2016-01-20 Arrangement for reducing radiation of noise from liquid-cooled transformers or chokes
PCT/EP2016/051083 WO2016134888A1 (fr) 2015-02-27 2016-01-20 Dispositif pour réduire l'émission sonore de transformateurs ou de bobines d'inductance refroidis par du liquide
EP16702043.7A EP3224842A1 (fr) 2015-02-27 2016-01-20 Dispositif pour réduire l'émission sonore de transformateurs ou de bobines d'inductance refroidis par du liquide
CN201680012249.1A CN107408447B (zh) 2015-02-27 2016-01-20 用于减少来自液冷变压器或扼流圈的噪音辐射的布置
CA2977715A CA2977715C (fr) 2015-02-27 2016-01-20 Disposition de reduction de rayonnement du bruit dans les transformateurs ou les etrangleurs refroidis par liquide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15156920.9A EP3062320B1 (fr) 2015-02-27 2015-02-27 Système destiné à réduire le rayonnement du son de transformateurs ou bobines à refroidissement liquide

Publications (2)

Publication Number Publication Date
EP3062320A1 EP3062320A1 (fr) 2016-08-31
EP3062320B1 true EP3062320B1 (fr) 2017-10-18

Family

ID=52672162

Family Applications (2)

Application Number Title Priority Date Filing Date
EP15156920.9A Active EP3062320B1 (fr) 2015-02-27 2015-02-27 Système destiné à réduire le rayonnement du son de transformateurs ou bobines à refroidissement liquide
EP16702043.7A Withdrawn EP3224842A1 (fr) 2015-02-27 2016-01-20 Dispositif pour réduire l'émission sonore de transformateurs ou de bobines d'inductance refroidis par du liquide

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP16702043.7A Withdrawn EP3224842A1 (fr) 2015-02-27 2016-01-20 Dispositif pour réduire l'émission sonore de transformateurs ou de bobines d'inductance refroidis par du liquide

Country Status (6)

Country Link
US (1) US10777350B2 (fr)
EP (2) EP3062320B1 (fr)
CN (1) CN107408447B (fr)
CA (1) CA2977715C (fr)
PL (1) PL3062320T3 (fr)
WO (1) WO2016134888A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI619127B (zh) * 2017-06-09 2018-03-21 Fortune Electric Co Ltd Vacuum noise suppression device for transformer
KR102210362B1 (ko) * 2019-06-13 2021-02-03 현대일렉트릭앤에너지시스템(주) 저소음 변압기
JP7523977B2 (ja) * 2020-07-17 2024-07-29 フクビ化学工業株式会社 ダクト構造

Family Cites Families (14)

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DE1293329C2 (de) 1967-05-18 1974-01-24 Brown, Boveri & Cie. AG, 6800 Mannheim-Käfertal Anordnung zur verminderung der schallabstrahlung von transformatorenoder drosselspulenkesseln
DE2309564C3 (de) 1973-02-26 1978-12-07 Transformatoren Union Ag, 7000 Stuttgart Verfahren und Vorrichtung zur Her- . stellung kombinierter Schalldämpfungsund Schalldämmungszellen im Bereich der Außenwandungen von Transformatorenoder Drosselspulenkesseln
US4215763A (en) * 1978-08-21 1980-08-05 General Electric Company Resonant sound attenuator for transformers
EP1889975A1 (fr) 2006-08-16 2008-02-20 Calenberg Ingenieure planmässig elastisch lagern GmbH Dispositif d'amortissement des bruits
US20080099275A1 (en) * 2006-10-31 2008-05-01 Robert Vaughan Seel Sound Attenuation Enclosure
CN102132339A (zh) * 2008-08-19 2011-07-20 西门子公司 降噪设备和降噪方法
US8028800B2 (en) * 2009-04-10 2011-10-04 Saint-Gobain Performance Plastics Rencol Limited Acoustic damping compositions
CN201893422U (zh) * 2010-11-30 2011-07-06 比亚迪股份有限公司 一种锂离子二次电池
CN201889013U (zh) * 2010-11-30 2011-07-06 张志明 一种转动阻尼装置
CN104335301B (zh) 2012-06-05 2017-10-31 西门子公司 用于以液体填充的变压器或感应器的罐
DE102012012442A1 (de) * 2012-06-22 2013-12-24 Loos & Co. Kg Neue Verwendung für schalldämmendes Verbundblech
CN105637602B (zh) * 2013-05-21 2018-05-15 西门子公司 用于空心电抗器的一体式声音屏障
US20150352950A1 (en) * 2014-06-10 2015-12-10 Thermo King Corporation Integrated noise suppression mechanism and method of using the same
MX355305B (es) * 2015-10-14 2018-04-12 Prolec Ge Int S De R L De C V Paneles acústicos para transformador.

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Also Published As

Publication number Publication date
WO2016134888A1 (fr) 2016-09-01
CA2977715C (fr) 2019-01-15
US20180047500A1 (en) 2018-02-15
US10777350B2 (en) 2020-09-15
EP3062320A1 (fr) 2016-08-31
CN107408447B (zh) 2019-04-16
EP3224842A1 (fr) 2017-10-04
PL3062320T3 (pl) 2018-03-30
CN107408447A (zh) 2017-11-28
CA2977715A1 (fr) 2016-09-01

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