EP0083718A1 - Installation de diminution de bruit pour dispositif stationnaire d'induction - Google Patents

Installation de diminution de bruit pour dispositif stationnaire d'induction Download PDF

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Publication number
EP0083718A1
EP0083718A1 EP82110831A EP82110831A EP0083718A1 EP 0083718 A1 EP0083718 A1 EP 0083718A1 EP 82110831 A EP82110831 A EP 82110831A EP 82110831 A EP82110831 A EP 82110831A EP 0083718 A1 EP0083718 A1 EP 0083718A1
Authority
EP
European Patent Office
Prior art keywords
sound insulation
insulation panels
tank
vibrations
induction apparatus
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.)
Withdrawn
Application number
EP82110831A
Other languages
German (de)
English (en)
Inventor
Yasuro Hori
Minoru Kanoi
Syuya Hagiwara
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 Ltd
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Publication of EP0083718A1 publication Critical patent/EP0083718A1/fr
Withdrawn legal-status Critical Current

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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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/125—Transformers
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/10—Applications
    • G10K2210/129—Vibration, e.g. instead of, or in addition to, acoustic noise
    • G10K2210/1291—Anti-Vibration-Control, e.g. reducing vibrations in panels or beams
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3011—Single acoustic input
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/301—Computational
    • G10K2210/3013—Analogue, i.e. using analogue computers or circuits
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/30—Means
    • G10K2210/321—Physical
    • G10K2210/3216—Cancellation means disposed in the vicinity of the source
    • 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
    • G10K2210/00—Details of active noise control [ANC] covered by G10K11/178 but not provided for in any of its subgroups
    • G10K2210/50—Miscellaneous
    • G10K2210/509—Hybrid, i.e. combining different technologies, e.g. passive and active

Definitions

  • the present invention relates to a noise-reduction device for reducing the noises generated from the tank of a stationary induction apparatus such as a transformer or reactor.
  • the demand has increasingly be raised for reducing the noises generated from stationary induction apparatuses such as the transformer.
  • the noises of the stationary induction apparatuses are caused by the magnetostriction of the core which in turn causes electromagnetic vibrations to be transmitted to the tank through such a medium as oil and are radiated into the atmosphere as a noise from the tank.
  • Various measures have so far been taken to prevent such noises.
  • the transformer is installed in a sound-proof building of concrete or steel plates to shut off or absorb the noises.
  • This method has various disadvantage including an increased installation space of the stationary induction apparatus, an increased production cost and a lengthened construction period.
  • the former method has the disadvantage that although the noises (primary noises) radiated by way of the outer wall of the tank through the oil from the winding and core are capable of being reduced, it is impossible to reduce the noises (secondary noises) caused by the vibrations of the sound insulation panels in which the vibrations are transmitted from the outer wall of the tank through the reinforcing channel.
  • the noise reduction level is limited by the physical limitations of the strength or dimensions of the elastic member for carrying the sound insulation panels or the size of the weighty material.
  • An object of the present invention is to provide a noise-reduction device for stationary induction apparatuses, which obviates the disadvantages of the prior art devices and effectively reduces the noises caused by the tank.
  • a noise-reduction device in which the primary noises radiated from the outer wall of the tank are prevented by sound insulation panels mounted on the outer wall of the tank through a framework such as reinforcing channels, and vibration cancelling means including vibration sensors and vibrators are mounted on the sound insulation panels, so that the controlling force of a phase opposite to the vibration transmitted from the tank through the reinforcing channel to the sound insulation panels causing the secondary noises is applied thereto, thus making it possible to cancel the vibrations by a smaller number of vibrators with a smaller controlling force than when the controlling force is applied directly to the tank.
  • reference numeral 1 designates a transformer tank containing a winding and core 18 and filled with an insulating oil 19. At least a pair of reinforcing channels 3 of U-shaped steel surrounding the tank 1 are securely welded to the side walls 2 of the tank 1 thereby to reinforce the tank 1. A plurarity of sound-insulation panels 4 surrounding the whole periphery of the tank including the main vibration section providing a noise source are mounted in such a manner as to close the part of the side walls 2 between the reinforcing channels 3. At the part of the side walls 2 which is covered by the sound insulation panels 4, as shown by the arrow A in Fig.
  • the sound insulation panels 4 is preferably made of highly damped plate with resin sandwiched between a pair of steel plates which absorbs vibrations more than an ordinary steel plate.
  • vibration sensors 5 and vibrators 6 are mounted on the sound insulation panels 4, so that detection signals from the vibration sensors 5 are applied to a control signal generator 7, which in turn applies a control signal to the vibrators 6 through an amplifier 8.
  • the vibration transmitted from the reinforcing channels 3 to the sound insulation panels 4 is thus detected by the vibration sensors 5 and a control signal corresponding to the detection signal is generated by the generator 7, which signal, after being amplified by the amplifier 8, is applied to the vibrators 6 to generate vibrations of the phase opposite to the vibrations transmitted to the sound insulation panels 4, thereby cancelling the vibrations of the sound insulation panels 4.
  • the circuit configuration and the operation of the control signal generator, the amplifier and the vibrators are essentially identical to those of similar devices disclosed in aforesaid U.S. Patent Application Serial No. 279,814, except that according to the present invention, the vibrators are adapted to reduce the vibrations transmitted to the sound insulation panels but not the vibrations of the tank itself and therefore a smaller number of vibrators with a smaller power are used to achieve the object of the invention.
  • the vibration sensors 4 and the vibrators 5 are mounted on the sound insulation panels 4 in such a manner of construction as shown in Fig. 3.
  • Each of the vibration sensors 5 and the vibrators 6 is held on a mounting plate 9, which is bolted replaceably to the sound insulation panel 4 so that the vibration sensor 5 and the vibrator 6 are situted in the space between the sound insulation panel 4 and the side plate 2 through a hole 10.
  • Lead wires 11, 12 from the vibration sensor 5 and the vibrator 6 are led through a hole 13 into a reinforcing channel 3 and after being wired therein, are connected to the control signal generator 7 and the amplifier 8 together with the lead wires of the other vibration sensors and vibrators.
  • the sound insulation panel 4 is mounted on the reinforcing channels 3 through a frame 14 and a flexible thin plate 15.
  • the vibration sensor 5 and the vibrator 6 are mounted on the frame 14 through mounting frames 16.
  • the vibration sensor 5 and the vibrator 6 alternatively may be mounted directly on the frame 14 without the mounting frame 16.
  • Numeral 17 designates an inspection cover.
  • the frame 14 and the thin plate 15 function as a weighty member and a spring respectively thereby to reduce the transmission of the vibrations from the reinforcing channel 3.
  • the vibration reduce effect may be increased by reducing the spring constant of the thin plate 15 and increasing the weight of the frame 14.
  • the vibrators 6 are mounted on the frame 14 through the mounting frame 16 so that the force of the phase opposite to the vibrations applied through the reinforcing channels 3 is applied to the tank 1 thereby to cancel the vibrations thereof, thus cancelling the vibrations of the sound insulation panels 4 and the inspection cover 17 connected with the frame 14.
  • Each vibrator 6 is mounted on the frame 14 by reason of the fact that the frame 14 has a larger rigidity than the sound insulation panel 4, resulting in a smaller number of natural vibration frequencies in the frequency range to be reduced. Specifically, when cancelling the vibrations of a structure by applying a control force thereto, vibrators as many as number of the natural vibration frequencies are theoretically required. When the vibrators 6 are mounted, not on the sound insulation panel 4, but on the frame 14 which is larger in rigidity, a smaller number of natural vibration frequencies to be reduced are involved, thus making it possible to reduce the vibrations with a smaller number of vibrators 6.
  • the embodiment under consideration which uses a control signal generator, an amplifier and vibrators similar to those of the first embodiment, has the advantages mentioned below.
  • the sound insulation panel 4 is supported from the reinforcing channel 3 by a spring of the thin plate 15, and therefore the vibration system of the sound insulation panel 4 may be considered substantially independently of the reinforcing channel 3, thereby clarifying and making it easy to predict the vibration characteristics of the sound insulation panel 4. This facilitates the vibration control on the one hand and improves the stability of vibration control on the other hand.
  • the vibration cancelling devices including the vibration sensors 5, the vibrators 5 and the frame 14 are contained in the space surrounded by the tank side plates 2 and the reinforcing channels 3, the tank dimension is not generally increased. Further, since the vibration cancelling devices are hermetically enclosed by the sound insulation panels 4, the thin plates 15 and the inspection covers 17, the vibration cancelling devices are not exposed to the elements, thus ensuring the long service life thereof.
  • the primary noises radiated from the surface of the tank are reduced by sound insulation panels mounted on the outer walls of the tank through framework such as reinfocing channels on the one hand
  • the vibration cancelling devices including vibration sensors and vibrators are mounted on sound insulation panels or weighty members installed on the sound insulation panels thereby to apply the controlling force of opposite phase to the vibrations transmitted to the sound insulation panels through the reinforcing channels from the tank causing the secondary noises on the other hand.
  • the noises generated from the tank are effectively reduced by a small number of vibrators with smaller power.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Regulation Of General Use Transformers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP82110831A 1981-12-02 1982-11-23 Installation de diminution de bruit pour dispositif stationnaire d'induction Withdrawn EP0083718A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP192844/81 1981-12-02
JP56192844A JPS5895806A (ja) 1981-12-02 1981-12-02 静止誘導電器の防音装置

Publications (1)

Publication Number Publication Date
EP0083718A1 true EP0083718A1 (fr) 1983-07-20

Family

ID=16297911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110831A Withdrawn EP0083718A1 (fr) 1981-12-02 1982-11-23 Installation de diminution de bruit pour dispositif stationnaire d'induction

Country Status (3)

Country Link
EP (1) EP0083718A1 (fr)
JP (1) JPS5895806A (fr)
CA (1) CA1181013A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632474A1 (fr) * 1988-06-01 1989-12-08 Saint Louis Inst Dispositif d'attenuation active de vibrations et notamment de bruit sans retard acoustique
GB2260874A (en) * 1991-10-21 1993-04-28 Marconi Gec Ltd A sound control device
EP0664044A1 (fr) * 1992-10-08 1995-07-26 Noise Cancellation Technologies, Inc. Caisson actif reduisant la transmission acoustique
EP0746843A1 (fr) * 1993-09-09 1996-12-11 Noise Cancellation Technologies, Inc. Systeme global de reduction de bruit pour dispositif fixe a induction
WO2004107312A2 (fr) * 2003-05-28 2004-12-09 Nederlandse Organisatie Voor Toegepast- Natuurwetenschappelijk Onderzoek Tno Produit semi-fini destine a etre monte sur une paroi vibrante ou sur un panneau vibrant afin d'amortir activement les vibrations de la paroi, paroi ou panneau presentant ledit produit semi-fini, systeme presentant un produit semi-fini et une unite de commande, paroi ou panneau presentant une unite de commande et procede d'a
EP2141691A1 (fr) * 2008-07-03 2010-01-06 Preform GmbH Dispositif de production de fumée adaptatif
WO2010063323A1 (fr) * 2008-12-04 2010-06-10 Abb Technology Ag Dispositif à induction
CN105609236A (zh) * 2016-01-19 2016-05-25 株洲南车时代电气股份有限公司 一种列车变流器用辅助变压器安装装置
WO2016147158A1 (fr) * 2015-03-18 2016-09-22 Efacec Energia - Máquinas E Equipamentos Eléctricos S.A. Paroi de réservoir de transformateur de puissance immergé dans de l'huile

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6120790A (ja) * 1984-07-10 1986-01-29 Canon Inc ワイヤドツト記録装置の印字ヘツド
JPH0661073A (ja) * 1992-08-03 1994-03-04 Chubu Electric Power Co Inc 電力用変圧器の騒音低減装置
CN106847254A (zh) * 2017-03-17 2017-06-13 浙江大学 一种局域性主动降噪系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782794A (en) * 1955-02-09 1957-09-11 Gen Electric Improvements relating to noise reduction applicable to electric induction apparatus and other sound sources
DE1227142B (de) * 1964-03-13 1966-10-20 Smit & Willem & Co Nv Einrichtung zur Geraeuschminderung bei Transformatoren und Drosselspulen
CH610429A5 (fr) * 1975-08-12 1979-04-12 Westinghouse Electric Corp
WO1981001479A1 (fr) * 1979-11-10 1981-05-28 Sound Attenuators Ltd Suppression des vibrations transmises par un fluide dans un conteneur
DE3047341A1 (de) * 1979-12-18 1981-09-17 Hitachi, Ltd., Tokyo Statische induktionsvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB782794A (en) * 1955-02-09 1957-09-11 Gen Electric Improvements relating to noise reduction applicable to electric induction apparatus and other sound sources
DE1227142B (de) * 1964-03-13 1966-10-20 Smit & Willem & Co Nv Einrichtung zur Geraeuschminderung bei Transformatoren und Drosselspulen
CH610429A5 (fr) * 1975-08-12 1979-04-12 Westinghouse Electric Corp
WO1981001479A1 (fr) * 1979-11-10 1981-05-28 Sound Attenuators Ltd Suppression des vibrations transmises par un fluide dans un conteneur
DE3047341A1 (de) * 1979-12-18 1981-09-17 Hitachi, Ltd., Tokyo Statische induktionsvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Section E1., week C 39, nov. 5. 1980 DERWENT PUBLICATIONS LTD.LONDON; T 06; & SU-A-714471 (WORK SAFETY RES.) *

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2632474A1 (fr) * 1988-06-01 1989-12-08 Saint Louis Inst Dispositif d'attenuation active de vibrations et notamment de bruit sans retard acoustique
GB2260874A (en) * 1991-10-21 1993-04-28 Marconi Gec Ltd A sound control device
EP0664044A1 (fr) * 1992-10-08 1995-07-26 Noise Cancellation Technologies, Inc. Caisson actif reduisant la transmission acoustique
EP0664044A4 (fr) * 1992-10-08 1996-04-03 Noise Cancellation Tech Caisson actif reduisant la transmission acoustique.
EP0746843A1 (fr) * 1993-09-09 1996-12-11 Noise Cancellation Technologies, Inc. Systeme global de reduction de bruit pour dispositif fixe a induction
EP0746843A4 (fr) * 1993-09-09 1998-12-09 Noise Cancellation Tech Systeme global de reduction de bruit pour dispositif fixe a induction
WO2004107312A2 (fr) * 2003-05-28 2004-12-09 Nederlandse Organisatie Voor Toegepast- Natuurwetenschappelijk Onderzoek Tno Produit semi-fini destine a etre monte sur une paroi vibrante ou sur un panneau vibrant afin d'amortir activement les vibrations de la paroi, paroi ou panneau presentant ledit produit semi-fini, systeme presentant un produit semi-fini et une unite de commande, paroi ou panneau presentant une unite de commande et procede d'a
WO2004107312A3 (fr) * 2003-05-28 2005-02-24 Tno Produit semi-fini destine a etre monte sur une paroi vibrante ou sur un panneau vibrant afin d'amortir activement les vibrations de la paroi, paroi ou panneau presentant ledit produit semi-fini, systeme presentant un produit semi-fini et une unite de commande, paroi ou panneau presentant une unite de commande et procede d'a
EP2141691A1 (fr) * 2008-07-03 2010-01-06 Preform GmbH Dispositif de production de fumée adaptatif
WO2010000411A1 (fr) * 2008-07-03 2010-01-07 Preform Gmbh Dispositif de production de bruit adaptatif
US8611576B2 (en) 2008-07-03 2013-12-17 Preform Gmbh Adaptive noise generating device
WO2010063323A1 (fr) * 2008-12-04 2010-06-10 Abb Technology Ag Dispositif à induction
US8198967B2 (en) 2008-12-04 2012-06-12 Abb Technology Ag Induction device
CN102227787B (zh) * 2008-12-04 2014-11-12 Abb技术有限公司 感应设备
WO2016147158A1 (fr) * 2015-03-18 2016-09-22 Efacec Energia - Máquinas E Equipamentos Eléctricos S.A. Paroi de réservoir de transformateur de puissance immergé dans de l'huile
CN105609236A (zh) * 2016-01-19 2016-05-25 株洲南车时代电气股份有限公司 一种列车变流器用辅助变压器安装装置
CN105609236B (zh) * 2016-01-19 2017-11-14 株洲南车时代电气股份有限公司 一种列车变流器用辅助变压器安装装置

Also Published As

Publication number Publication date
JPS5895806A (ja) 1983-06-07
CA1181013A (fr) 1985-01-15

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): CH DE FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19830728

STAA Information on the status of an ep patent application or granted ep patent

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Effective date: 19841130

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HORI, YASURO

Inventor name: HAGIWARA, SYUYA

Inventor name: KANOI, MINORU