GB1157390A - Pressure Balancing Conservator for Oil-filled Transformers - Google Patents

Pressure Balancing Conservator for Oil-filled Transformers

Info

Publication number
GB1157390A
GB1157390A GB49517/67A GB4951767A GB1157390A GB 1157390 A GB1157390 A GB 1157390A GB 49517/67 A GB49517/67 A GB 49517/67A GB 4951767 A GB4951767 A GB 4951767A GB 1157390 A GB1157390 A GB 1157390A
Authority
GB
United Kingdom
Prior art keywords
cell
oil
air
conservator
water
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
Application number
GB49517/67A
Inventor
Shinji Nakazawa
Tohru Nakazawa
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1157390A publication Critical patent/GB1157390A/en
Expired legal-status Critical Current

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
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)

Abstract

1,157,390. Transformers. S. NAKAZAWA, and T. NAKAZAWA. 31 Oct., 1967 [26 Dec., 1966], No. 42517/67. Heading H1T. The upper surface 8 of an expansible cell 4 in the oil-conservator for an oil-filled transformer is made buoyant by the use of, e.g., a foam plastics portion 17 or a network of spacers and air-pockets, and air-filled tubes 19 secured by adhesive tapes 20 around the upper peripheral edge of the cell, whereby the upper surface of the cell is maintained substantially at the same level as that of oil 13 between cell 4 and the conservator casing 3 during operation of the cell, the arrangement being such that the sidewalls of the cell do not make appreciable contact with the inner surface of the casing 3. The upper surface of the cell is covered with a sheet 18 of material, e.g. synthetic rubber or resin, which is impermeable to water, oil or air, the side walls and bottom of the cell being made of the same material. The air-filled tubes 19 are of thin vinyl or metal. An undulated vinyl plate may be placed over the covering sheet 18 to collect water deposited from the air-space S and to direct the water to a well 15 from which it may be drained.
GB49517/67A 1966-12-26 1967-10-31 Pressure Balancing Conservator for Oil-filled Transformers Expired GB1157390A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11742566 1966-12-26

Publications (1)

Publication Number Publication Date
GB1157390A true GB1157390A (en) 1969-07-09

Family

ID=14711313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49517/67A Expired GB1157390A (en) 1966-12-26 1967-10-31 Pressure Balancing Conservator for Oil-filled Transformers

Country Status (2)

Country Link
US (1) US3448219A (en)
GB (1) GB1157390A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934453A (en) * 1974-10-25 1976-01-27 Allmanna Svenska Elektriska Aktiebolaget Conservator system
FR2413624A1 (en) * 1977-12-28 1979-07-27 Matra Engins Electronic circuit cooling device - has expansion chamber and non-return valve to prevent air from being drawn into refrigerant vessel
US4253518A (en) * 1979-01-26 1981-03-03 Matra Cooling installation working through a change in phase
US4609900A (en) * 1984-06-26 1986-09-02 Bruno Bachhofer High-voltage transformer with liquid cooling
US5976226A (en) * 1997-12-18 1999-11-02 Bastian; Juergen Means to ensure a minimum of gas content in liquids used for heat exchange and insulating purposes with complementary means for liquid expansion into vessels with variable volumes
DE19847313A1 (en) * 1998-10-14 2000-05-04 Hydac Technology Gmbh Compensating device, suitable for use in transformers of rail vehicles
CN103377802A (en) * 2012-04-13 2013-10-30 沈阳海为电力设备有限公司 Internal metal bellow expansion oil conservator with self-protection function
EP2704162B1 (en) * 2012-08-29 2014-11-12 ABB Technology AG Pressure Compensator
JP5490969B1 (en) * 2013-07-09 2014-05-14 三菱電機株式会社 Conservator
CN103675000A (en) * 2013-12-05 2014-03-26 常州东芝变压器有限公司 Container for material and oil compatibility tests
JP7063002B2 (en) * 2018-02-23 2022-05-09 株式会社Ihi Coil device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3019280A (en) * 1962-01-30 Pressure type oil feeding tank for oil
US1088197A (en) * 1911-12-15 1914-02-24 Bbc Brown Boveri & Cie Device on transformers for preventing the decomposition of oil by the oxygen contained in air.
US2034736A (en) * 1931-06-04 1936-03-24 Rca Corp Transformer breather
US1944005A (en) * 1933-02-21 1934-01-16 Habirshaw Cable And Wire Corp Pressure reservoir with fabric bag
US2668186A (en) * 1948-05-28 1954-02-02 Comp Generale Electricite Electric cable with oil pressure outside the insulation
US3330902A (en) * 1964-07-14 1967-07-11 Nakazawa Shinji Conservator for oil-filled transformer

Also Published As

Publication number Publication date
US3448219A (en) 1969-06-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees