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US2404995A - Gas blast circuit breaker - Google Patents

Gas blast circuit breaker Download PDF

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Publication number
US2404995A
US2404995A US522934A US52293444A US2404995A US 2404995 A US2404995 A US 2404995A US 522934 A US522934 A US 522934A US 52293444 A US52293444 A US 52293444A US 2404995 A US2404995 A US 2404995A
Authority
US
United States
Prior art keywords
pipe bend
circuit breaker
gas
blast circuit
pipe
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
US522934A
Other languages
English (en)
Inventor
Thommen Hans
Bruhlmann Gottfried
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.)
BBC Brown Boveri AG Germany
Original Assignee
Bbc Brown Boveri & Cie
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 Bbc Brown Boveri & Cie filed Critical Bbc Brown Boveri & Cie
Application granted granted Critical
Publication of US2404995A publication Critical patent/US2404995A/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
    • H01H33/56—Gas reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • F15D1/04—Arrangements of guide vanes in pipe elbows or duct bends; Construction of pipe conduit elements for elbows with respect to flow, e.g. for reducing losses of flow

Definitions

  • the present invention therefore concerns a pipe bend for the pressure gas piping of gasblast circuit breakers, where the aforementioned disadvantage is avoided according to the invention by providing means which so influence the ilow oi pressure gas in the pipe bends that the velocity of iiow on the discharge side of the bends is distributed approximately uniformly over the whole cross-section of the pipe.
  • FIGs. 1, 2 and 3 are fragmentary views, in longitudinal central section, of portions of gas-blast circuit breakers including pipe bends that constitute embodiments of the invention.
  • the pipe bend a which serves either to connect together lengths of pressure gas piping or to join ie latter to the switch chamber b of a gas-blast circuit breaker not shown in the drawing, has a circular crosssection c at the inlet end and an annular cross-section d at the discharge end for the passage of the pressure gas, the planes of the inlet and the outlet ends being at a substantial angle to each other, for example 90 as shown in the drawing.
  • the outer curved wall of the pipe bend a has a barrel-shaped bulge which is eccentric with reference to the axis of curvature, i.
  • the outer portion of the Wall is formed by extending the cylindrical outer walls of the inlet and outlet ends of the pipe bend into merging Contact eccentrically of the axis of curvature.
  • These flow guides can for instance consist of concentric cylinders that may be and preferably are located, as shown in the drawing, in the element adjoining the pipe bend, that is into the switch chamber or an adjoining pipe section.
  • a pipe bend for use in pressure gas piping comprising a hollow body having a circular inlet opening and an annular outlet opening in end planes at a substantial angle to each other, the inner wall of said annular outlet opening being formed by a core located within said hollow body at its outlet end, and means between said inlet and outlet end planes for effecting a substantially uniform velocity of gas flow through diierent parts of said annular outlet opening.
  • a pipe bend as recited in claim 1 in combination with flow guides located in the annular outlet of said pipe bend for directing the gas along paths parallel to the axis of the annular outlet opening of the pipe bend.
  • a pipe bend as recited in claim 1 in combination with a conduit section connected to the outlet end of said pipe bend, and ow guides located in said conduit section for directing the gas along paths parallel to the axis of the annular outlet opening of the pipe bend.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuit Breakers (AREA)
  • Pipeline Systems (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
US522934A 1943-01-20 1944-02-18 Gas blast circuit breaker Expired - Lifetime US2404995A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH576568X 1943-01-20

Publications (1)

Publication Number Publication Date
US2404995A true US2404995A (en) 1946-07-30

Family

ID=4521247

Family Applications (1)

Application Number Title Priority Date Filing Date
US522934A Expired - Lifetime US2404995A (en) 1943-01-20 1944-02-18 Gas blast circuit breaker

Country Status (6)

Country Link
US (1) US2404995A (hu)
BE (1) BE454028A (hu)
CH (1) CH233662A (hu)
FR (1) FR901942A (hu)
GB (1) GB576568A (hu)
NL (1) NL62855C (hu)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017902A (en) * 1956-01-16 1962-01-23 Holley Carburetor Co Flow control
US3092185A (en) * 1961-07-05 1963-06-04 Kiekhaefer Corp Outboard propulsion unit exhaust system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017902A (en) * 1956-01-16 1962-01-23 Holley Carburetor Co Flow control
US3092185A (en) * 1961-07-05 1963-06-04 Kiekhaefer Corp Outboard propulsion unit exhaust system

Also Published As

Publication number Publication date
BE454028A (hu)
GB576568A (en) 1946-04-10
NL62855C (hu)
FR901942A (fr) 1945-08-09
CH233662A (de) 1944-08-15

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