US3629757A - Low-noise transformer device - Google Patents

Low-noise transformer device Download PDF

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Publication number
US3629757A
US3629757A US95793A US3629757DA US3629757A US 3629757 A US3629757 A US 3629757A US 95793 A US95793 A US 95793A US 3629757D A US3629757D A US 3629757DA US 3629757 A US3629757 A US 3629757A
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United States
Prior art keywords
noise
transformer
chamber
liquefied gas
cooling
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.)
Expired - Lifetime
Application number
US95793A
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English (en)
Inventor
Hideo Katayama
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Application granted granted Critical
Publication of US3629757A publication Critical patent/US3629757A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • H01F27/08—Cooling; Ventilating
    • 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
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/18—Liquid cooling by evaporating liquids

Definitions

  • Kozma Attorney-Holman & Stern ABSTRACTrA low-noise transformer device is so arranged that the transformer main body is disposed inside of a noiseshielding chamber, and a cooler for cooling the insulation oil circulated throughout the transformer is cooled with a liquefied gas ejected onto a cooling pipe for removing out of the cooler heat corresponding principally to the heat of vaporization of the gas, which is discharged into the atmospheric without being recovered.
  • transformers of large capacities tend to be installed within such densely in habited areas.
  • reduction of noises from the transformer main body and also from the associated coolers is urgently required.
  • the noise of the transformer main body has been substantially reduced by surrounding the transformer within a noise-shielding wall structure.
  • the reduction of the noises from the coolers associated with the transformer is more difficult than that of the transformer main body, and in some particular cases, the noises from the coolers have been louder than that of the transformer main body.
  • the noise from the transformer main body has been transmitted through the cooling oil to the associated coolers (or radiators) disposed outside of the noise-shielding chambers, so that another noise source has been thereby created.
  • the noise from the blowers has been considerably high, and in the case of a transformer having water-cooling towers, the noises from the blowers and also of the falling water have reached a still higher level.
  • a primary object of the present invention is to provide a transformer device the noise level of which is extremely low.
  • Another object of the invention is to provide a transformer device the noise level of which is substantially lowered through a simple and economical procedure.
  • Still another object of the invention is to provide a transformer device wherein a liquefied gas is employed as its ultimate cooling medium.
  • a novel transformer device wherein the transformer main body is enclosed in a noise-shielding chamber, a liquefied gas is ejected onto a cooling pipe of the cooler of the transformer oil for removing heat corresponding principally to the heat of vaporization of the gas, and the gas thus used is discharged into the atmosphere.
  • FIG. I is a schematic view of a transformer device according to the present invention.
  • FIG. 2 is another schematic view showing another example of the transformer device according to the present invention.
  • FIG. 1 there is indicated a main body 1 of a transformer device located in a noise-shielding chamber 2 in a building or surrounded by noise-shielding walls as is widely known in the art.
  • a cooler 3 for cooling oil in the transformer main body I in this embodiment of the invention is provided outside of the noise-shielding chamber 2, and is connected to the transformer main body 1 through oil pipes 4 and an oilfeeding pump 41.
  • a liquefied gas stored in a tank is conducted through a pipe 6 and a pump 61 into the interior of the cooler 3 and ejected on to the outside surface of a cooling pipe 31 of the cooler 3.
  • the liquefied gas contacting the cooler pipe 31 at a high temperature corresponding to that of the oil circulating through the transformer thereby evaporates, thus removing heat for vaporization out of the pipe 31 and reducing the temperature of the circulating oil.
  • the cooling device of the transformer having the above-described construction could reduce the noise level far lower than the conventional cooling systems such as that of the previously described air-cooled type or coolingtower type, and the cooling efficiency thereof was also excellent.
  • the cooling medium thus evaporated is thereafter discharged directly into the atmosphere, whereby complication of the cooling device is avoided, and noise created in the cooling device can be substantially reduced.
  • a nonflammable gas such as nitrogen gas is used, whereby there is no possibility of fire hazard.
  • one set of the terminals of the transformer may be guided, as shown in the drawing, through bushings ll penetrating the wall 21 of the noise-shield chamber 2 to the outside of the chamber, and other set of terminals may be connected through elephant-type cable heads 12 to underground cables.
  • the noise-shield chamber 2 may be further provided with an air inlet port 22 and an exhaust port 23 through the walls 21 so that the temperature inside of the chamber is prevented from rising, these ports being provided in a manner which will not impair the noise-suppressing effect of the chamber 2.
  • FIG. 2 there is indicated another embodiment of the present invention wherein the cooling device 3 is provided inside of the noise-shielded chamber 20 together with the transformer main body I.
  • the evaporated gas which has cooled the cooling pipe 31 within the cooler 3 is discharged into the atmosphere through a tall stacklike exhaust tube 24 provided to communicate with the noise shielded chamber 20 for promoting the exhausting effect for the chamber.
  • the storing tank 5 of the liquefied gas provided outside of the chamber 20 is connected with a pipe 6 through a pump 61 as in the case of the preceding example.
  • the pipe 6 in this example may be branched to provide another pipeline 62 which is opened into the noiseshielded chamber 20 so that the liquefied gas may be partly discharged through the pipeline 62 and the temperature of the chamber 20 may be thereby controlled.
  • the tank 5 for storing the liquefied gas may be placed at a higher level than that of the cooler 3, whereby the energy due to the difference in heights of the locations of the tank 5 and the cooler 3 can be effectively utilized and the pump 61 may be thereby omitted.
  • a low-noise transformer device comprising a noiseshielding chamber, a transformer main body located within said noise-shielding chamber, a liquefied gas storing tank provided outside of the noise-shielding chamber, and a cooler having a cooling pipe through which a cooling oil of the transformer is circulated, and onto the outside surface of which is ejected the liquefied gas from said storing tank, whereby an amount of heat corresponding principally to the heat of vaporization of the liquefied gas ejected onto the cooling pipe is removed out of the cooling oil of the transformer circulating inside of the pipe and the gas thus evaporated is discharged directly into the atmosphere outside of the chamber.
  • a low-noise transformer device comprising a noiseshielding chamber, a transformer main body located inside of the noise-shielding chamber, a liquefied gas storing tank provided outside of the noise-shielding chamber, a cooler provided inside of said noise-shielding chamber and having a cooling pipe through which a cooling oil of the transformer is circulated, and onto the outside surface of which is ejected the liquefied gas from said storing tank so that an amount of heat corresponding principally to the heat of vaporization of the liquefied gas ejected onto the pipe is removed out of the cooling oil of the transformer circulating inside of the pipe, and a stackiike exhaust tube provided in communication with said noise-shielding chamber for exhausting the liquefied gas thus evaporated on the cooler into the atmosphere outside of the chamber. 5

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)
US95793A 1969-12-11 1970-12-07 Low-noise transformer device Expired - Lifetime US3629757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9968869 1969-12-11

Publications (1)

Publication Number Publication Date
US3629757A true US3629757A (en) 1971-12-21

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Family Applications (1)

Application Number Title Priority Date Filing Date
US95793A Expired - Lifetime US3629757A (en) 1969-12-11 1970-12-07 Low-noise transformer device

Country Status (3)

Country Link
US (1) US3629757A (enrdf_load_stackoverflow)
DE (1) DE2060894C3 (enrdf_load_stackoverflow)
GB (1) GB1304557A (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5724017A (en) * 1995-07-31 1998-03-03 General Electric Company Electrical transformer with reduced core noise
US5726617A (en) * 1995-07-31 1998-03-10 General Electric Company Electrical transformer with reduced core noise
US5815059A (en) * 1991-04-26 1998-09-29 Lockheed Martin Corporation Coaxial isolation mounting of a toroidal transformer
CN106449024A (zh) * 2016-11-18 2017-02-22 蔡洪祥 一种变压器装载机架

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2708705C3 (de) * 1977-03-01 1982-04-29 Transformatoren Union Ag, 7000 Stuttgart Anordnung zur Geräuschdämmung bei Großtransformatoren mit getrennt aufgestellten Kühlanlagen
CN118116710B (zh) * 2023-12-25 2024-12-06 邢台市华兴电器设备有限公司 一种具有降噪功能的室内智能变压器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US886246A (en) * 1907-08-03 1908-04-28 Westinghouse Electric & Mfg Co Cooling system for transformers.
US1334041A (en) * 1919-03-06 1920-03-16 Lindstrom Arvid Insulating and cooling means for transformers
US2711882A (en) * 1952-01-12 1955-06-28 Westinghouse Electric Corp Electrical apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US886246A (en) * 1907-08-03 1908-04-28 Westinghouse Electric & Mfg Co Cooling system for transformers.
US1334041A (en) * 1919-03-06 1920-03-16 Lindstrom Arvid Insulating and cooling means for transformers
US2711882A (en) * 1952-01-12 1955-06-28 Westinghouse Electric Corp Electrical apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5815059A (en) * 1991-04-26 1998-09-29 Lockheed Martin Corporation Coaxial isolation mounting of a toroidal transformer
US5724017A (en) * 1995-07-31 1998-03-03 General Electric Company Electrical transformer with reduced core noise
US5726617A (en) * 1995-07-31 1998-03-10 General Electric Company Electrical transformer with reduced core noise
CN106449024A (zh) * 2016-11-18 2017-02-22 蔡洪祥 一种变压器装载机架
CN106449024B (zh) * 2016-11-18 2017-12-19 浙江江山博奥电气有限公司 一种变压器装载机架

Also Published As

Publication number Publication date
DE2060894B2 (de) 1975-01-02
DE2060894C3 (de) 1975-08-07
DE2060894A1 (de) 1971-06-16
GB1304557A (enrdf_load_stackoverflow) 1973-01-24

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