Gas-blast valve of a gas-blast circuit-breaker
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United States of America Patent
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-
Oct 14, 1980
Grant Date -
N/A
app pub date -
Feb 7, 1979
filing date -
Feb 7, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A gas-blast circuit-breaker which includes at least one cutout chamber including at least one blast valve with two seats, one of which, when the valve is opened, is situated on the blast-gas exit path. The breaker is characterized in that a moving slide valve is associated with the valve, in such a manner that opening the valve causes a slightly delayed movement of the slide valve in the same direction as the valve and along the same axis, so that it masks said valve seat situated on the exit path of the hot blast-gases arriving from extinguishing the arc when the blast-gases flow towards the outside; the slide valve being opened by compressed gas contained in the gas-blast circuit-breaker.
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