ATE399385T1 - IMPROVED GAS STORAGE BUCHWOOD RELAY - Google Patents

IMPROVED GAS STORAGE BUCHWOOD RELAY

Info

Publication number
ATE399385T1
ATE399385T1 AT99104056T AT99104056T ATE399385T1 AT E399385 T1 ATE399385 T1 AT E399385T1 AT 99104056 T AT99104056 T AT 99104056T AT 99104056 T AT99104056 T AT 99104056T AT E399385 T1 ATE399385 T1 AT E399385T1
Authority
AT
Austria
Prior art keywords
relay
buchwood
float
gas storage
improved gas
Prior art date
Application number
AT99104056T
Other languages
German (de)
Inventor
Lago Silvio Dal
Original Assignee
Comem Spa
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 Comem Spa filed Critical Comem Spa
Application granted granted Critical
Publication of ATE399385T1 publication Critical patent/ATE399385T1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/55—Oil reservoirs or tanks; Lowering means therefor
    • H01H33/555—Protective arrangements responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
    • H01H35/40—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow actuated by devices allowing continual flow of fluid, e.g. vane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/02—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding actuated by movement of a float carrying a magnet

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Power Engineering (AREA)
  • Level Indicators Using A Float (AREA)
  • Organic Insulating Materials (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

A gas-accumulation Buchholz relay, which comprises, to be immersed in an oil bath, a supporting frame (23) for magnetic switches (27) for closing circuits and at least one movable device (28,29) of the float type for actuating the switches. The relay is characterized in that the float (30) is of the lever type with a rotation axis which is fixed to the frame (23) and is operatively connected to a magnet holder which acts as a counterweight. The float (30) is articulated in its rotation with respect to the magnet holder through a given angle. <IMAGE>
AT99104056T 1998-03-24 1999-03-17 IMPROVED GAS STORAGE BUCHWOOD RELAY ATE399385T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT98PD000061A ITPD980061A1 (en) 1998-03-24 1998-03-24 BUCHHOLZ TYPE IMPROVED GAS STORAGE RELAY

Publications (1)

Publication Number Publication Date
ATE399385T1 true ATE399385T1 (en) 2008-07-15

Family

ID=11392112

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99104056T ATE399385T1 (en) 1998-03-24 1999-03-17 IMPROVED GAS STORAGE BUCHWOOD RELAY

Country Status (5)

Country Link
EP (1) EP0945951B1 (en)
AT (1) ATE399385T1 (en)
DE (1) DE69938948D1 (en)
ES (1) ES2310021T3 (en)
IT (1) ITPD980061A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103620719B (en) * 2011-06-22 2016-07-13 赖茵豪森机械制造公司 Buchholz relay
PL2688081T3 (en) * 2012-07-20 2016-06-30 Abb Schweiz Ag Safety device for a power transformer, and related power transformer using such a safety device
CN103681099B (en) * 2013-12-11 2015-10-14 国家电网公司 A kind of Buchholz relay with Long-distance Control
CN105826128B (en) * 2015-01-07 2018-06-19 国家电网公司 Multi-functional double float gas relays
CN112038172B (en) * 2020-07-15 2023-03-10 国网山东省电力公司青岛供电公司 Gas relay automatic exhaust device, exhaust method and gas relay

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1012247A (en) * 1949-07-15 1952-07-07 Trist & Co Ltd Ronald Improvements to float-controlled magnetic devices
BE678625A (en) * 1965-03-30 1966-09-01
US5426271A (en) * 1994-01-18 1995-06-20 Honeywell Inc. Liquid level sensor

Also Published As

Publication number Publication date
EP0945951A2 (en) 1999-09-29
EP0945951A3 (en) 2000-06-07
ES2310021T3 (en) 2008-12-16
DE69938948D1 (en) 2008-08-07
EP0945951B1 (en) 2008-06-25
ITPD980061A1 (en) 1999-09-24

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties