US1699144A - Electric switch - Google Patents

Electric switch Download PDF

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Publication number
US1699144A
US1699144A US602701A US60270122A US1699144A US 1699144 A US1699144 A US 1699144A US 602701 A US602701 A US 602701A US 60270122 A US60270122 A US 60270122A US 1699144 A US1699144 A US 1699144A
Authority
US
United States
Prior art keywords
tank
gas
liquid
chamber
pressure
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
US602701A
Other languages
English (en)
Inventor
John D Hilliard
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to US602701A priority Critical patent/US1699144A/en
Priority to FR574190D priority patent/FR574190A/fr
Application granted granted Critical
Publication of US1699144A publication Critical patent/US1699144A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • a ⁇ tank 1 having an insulating lining 2, adapted to contain an insulating liquid 3, the normal level of which is indicated by the shading.
  • a cover 4 is secured to the tank l and is made tightl by the gasket 5.
  • Apertures in the ycover 4' are provided to receive insulating bushings 6 for stationary electrodes A7 the bushings being held in place by the flanges 8, which may be semi-circular in form.
  • Suitable gaskets may be placed between t-he insulators 6 and the flanges 8 in order to make a gas tight connection.
  • the operating rod 10 enters the tank 1 through an aperture 11 in the cover 4 and supports a movable contact bridging member 12.
  • a gas shield 13 adapted to be placed between the tank 1 and its insulating lining 2 is formed integral with the cover 4 and extends below the level of the fluid 3.
  • Another gas shield 14 is attached to the cover 4 around the operating rod 10.
  • a safety valve 15 is inserted in the cover 4 to relieve excessypressure in the tank 1.
  • An adjustable counterweight 27 is attached to the cover member 26 in the manner shown to regulate the pressure of the gas within the cock 29 is opened and as the top member rises a mixture of carbon dioxide and nitrogen is drawn into the holder 20.
  • An auxiliary expansion chamber casing 30 is located near the bottom of the tank 1 and is provided with a. valved gas drain pipe 31 which is rotatable within the Vopening in the wall of the tank 1 so as to adjust the height of the mouth of the tube 34 in the expansion chamber. Inert gas may be admitted to chamber 30 through the pipe 31 and valve 32.
  • the switch is prepared for service in the following manner: After the usual contact adjustments have been made the tank 1 is secured to the cover 4 which as is usual in this type of switch is secured t-o a framework or other support (not shown) and the gaskets are then tested for leakage.
  • the tank 1, the separating chamber 16 and the valved connections 17, 18 and 21 are completely filled with the insulating liquid (as evinced by the appearance of liquid flowing out through the valve 35 located at the bottom of connection 21).
  • the proper valves are t-hen manipulated to connect the separating chamber 16 and tank 1 with the gas holder 20 in which has been accumulated a sufficient amount of inert gas to replace the excessive insulating liquid.
  • the liquid is then withdrawn ⁇ from the tank throughthe pipe 33 to the normal operating level, the space above the liquid being taken up with the gas supplied from the gas holder 20.
  • Pressure upon the gas in the, switch tank 1 is maintained by adjustment of the counterweight 27 which is attached to the top of the gas holder 20. lIhis pressure is preferably somewhat above atmosphericA pressure. Leakage of gas from the system is thus replaced by injecting additional gas into the tank. This is necessary in order to prevent the entrance of air in case of a leak in the tank.
  • a.- tan-k Vcontaining a liquid contacts separable within said liquid to break a circuit whereby an arc is formed and pressure is created within said tank, means forming a submerged chamber arranged beneath said contacts and means for supplying an inert gas to said chamber.
  • a switching apparatus atank containing a liquid, contacts separable within said liquid to break a'circuit whereby an arc is formed and pressure is created Within said tank, means forming a gas compression chamber immersed in the liquid and spaced from the walls of the tank and Vmeans for conveying gas to and from said chamber to regulate the volume of gas therein;
  • a tank consure is created within saidA tank, and a liquid and gas separating chamber communicating with said tank above the normal level of said liquid.
  • a tank containing an insulating liquid and an inert gas, a liquid and gas separating chamber in communication with said tank above the normal level of said liquid, and means for conducting liquid fromA said chamber to said tank.
  • a vessel containing an insulating fluid and an inert gas, a. liquid and gas separating chamber in communication with said vessel, and a pressure tank in communication with said chamber.
  • a tank containing an insulating liquid and anV inert gas contacts separable within said liquid to break a. circuit whereby an arc is formed and pressure is generated within said tank, means forming a compression chamber beneath said liquid, liquid land gas separating means in communication with said tank, and a source of inert gas under pressure in communication with said separating means.

Landscapes

  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
US602701A 1922-11-23 1922-11-23 Electric switch Expired - Lifetime US1699144A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US602701A US1699144A (en) 1922-11-23 1922-11-23 Electric switch
FR574190D FR574190A (fr) 1922-11-23 1923-11-20 Perfectionnements aux interrupteurs électriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US602701A US1699144A (en) 1922-11-23 1922-11-23 Electric switch

Publications (1)

Publication Number Publication Date
US1699144A true US1699144A (en) 1929-01-15

Family

ID=24412440

Family Applications (1)

Application Number Title Priority Date Filing Date
US602701A Expired - Lifetime US1699144A (en) 1922-11-23 1922-11-23 Electric switch

Country Status (2)

Country Link
US (1) US1699144A (fr)
FR (1) FR574190A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734973A (en) * 1951-08-18 1956-02-14 Circuit interrupters
US2872561A (en) * 1956-04-26 1959-02-03 Hoover Co Electric fry pan
US2998499A (en) * 1958-06-04 1961-08-29 Gen Electric Electric circuit breaker

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2734973A (en) * 1951-08-18 1956-02-14 Circuit interrupters
US2872561A (en) * 1956-04-26 1959-02-03 Hoover Co Electric fry pan
US2998499A (en) * 1958-06-04 1961-08-29 Gen Electric Electric circuit breaker

Also Published As

Publication number Publication date
FR574190A (fr) 1924-07-07

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