JPS55105306A - Tank for oil filled electrical machine - Google Patents

Tank for oil filled electrical machine

Info

Publication number
JPS55105306A
JPS55105306A JP1227479A JP1227479A JPS55105306A JP S55105306 A JPS55105306 A JP S55105306A JP 1227479 A JP1227479 A JP 1227479A JP 1227479 A JP1227479 A JP 1227479A JP S55105306 A JPS55105306 A JP S55105306A
Authority
JP
Japan
Prior art keywords
radiation plate
forming
trough
side wall
curved portion
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.)
Granted
Application number
JP1227479A
Other languages
Japanese (ja)
Other versions
JPS5829609B2 (en
Inventor
Hiroshi Nishio
Masao Uchida
Akihiro Ooyama
Masaru Sakamoto
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
Priority to JP1227479A priority Critical patent/JPS5829609B2/en
Publication of JPS55105306A publication Critical patent/JPS55105306A/en
Publication of JPS5829609B2 publication Critical patent/JPS5829609B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Transformer Cooling (AREA)
  • Housings And Mounting Of Transformers (AREA)

Abstract

PURPOSE: To enable the R forming of a radiation plate of a oil filled electrical machine without to damage the close adhesion between the curved portion of the side wall and the trough portion of radiation plate, and facilitate the transporting operation and the like by a method wherein the partially curved parts are prepared at both upper and lower end of the trough portion of the wave formed radiation plate corresponding to each curved portion R of the side wall.
CONSTITUTION: A circular tank is constructed with an upper flange 13, a lower bottom plate 14 and a radiation plate 11 which is made with a steel sheet formed in the consecutive wave form. Every one pitch wave form of the radiation plate is transfered horizontally on the feed roller 9, and a trough part 2 of the radiation plate 11 is stopped on a lower mold 10a of an R forming machine 10. Lowering a upper mold 10b, the upper and lower end 12a, 12b of the trough part 12 are partially pressed against the lower mold 10a to put into practice the R forming, and flatten the center part 12c. Thus after the R forming is performed, all over the radiation plate 11 is kept in straight with no bend at the trough part 12, and R forming operation is practised without to damage the close adhesion between the curved portion of the side wall and the trough part of radiation plate 12, and facilitate the transporting operation and the like.
COPYRIGHT: (C)1980,JPO&Japio
JP1227479A 1979-02-07 1979-02-07 Tank for oil-filled electrical equipment Expired JPS5829609B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1227479A JPS5829609B2 (en) 1979-02-07 1979-02-07 Tank for oil-filled electrical equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1227479A JPS5829609B2 (en) 1979-02-07 1979-02-07 Tank for oil-filled electrical equipment

Publications (2)

Publication Number Publication Date
JPS55105306A true JPS55105306A (en) 1980-08-12
JPS5829609B2 JPS5829609B2 (en) 1983-06-23

Family

ID=11800778

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1227479A Expired JPS5829609B2 (en) 1979-02-07 1979-02-07 Tank for oil-filled electrical equipment

Country Status (1)

Country Link
JP (1) JPS5829609B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147421A (en) * 1983-02-10 1984-08-23 Hitachi Ltd Assembling of tank
US4745966A (en) * 1986-07-22 1988-05-24 Westinghouse Electric Corp. Heat exchangers and electrical apparatus having heat exchangers
JP2009267184A (en) * 2008-04-28 2009-11-12 Daihen Corp Method of manufacturing transformer case
JP2011092998A (en) * 2009-09-29 2011-05-12 Daihen Corp Method and equipment of welding cylindrical body and corrugated heat radiation plate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59147421A (en) * 1983-02-10 1984-08-23 Hitachi Ltd Assembling of tank
JPH0221645B2 (en) * 1983-02-10 1990-05-15 Hitachi Ltd
US4745966A (en) * 1986-07-22 1988-05-24 Westinghouse Electric Corp. Heat exchangers and electrical apparatus having heat exchangers
JP2009267184A (en) * 2008-04-28 2009-11-12 Daihen Corp Method of manufacturing transformer case
JP2011092998A (en) * 2009-09-29 2011-05-12 Daihen Corp Method and equipment of welding cylindrical body and corrugated heat radiation plate
JP2011092997A (en) * 2009-09-29 2011-05-12 Daihen Corp Method and equipment of welding cylindrical body and corrugated heat radiation plate

Also Published As

Publication number Publication date
JPS5829609B2 (en) 1983-06-23

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