EXCESS FLOW SHUTOFF

A flexible connector (10) incorporates an excess flow shutoff (24) at its inlet (14) to prevent uncontrolled flow in the event of a failure such as rupture or separation of the connector. A shutoff sleeve (62) moves in a body (26) between an upstream, open position and a downstream, closed position....

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Bibliographic Details
Main Author JOHNSON, DWIGHT N
Format Patent
LanguageEnglish
French
Published 17.04.2012
Subjects
ACTUATING-FLOATS
BLASTING
COCKS
DEVICES FOR VENTING OR AERATING
ENGINEERING ELEMENTS AND UNITS
GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS
HEATING
LIGHTING
MECHANICAL ENGINEERING
TAPS
THERMAL INSULATION IN GENERAL
VALVES
WEAPONS
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Summary:A flexible connector (10) incorporates an excess flow shutoff (24) at its inlet (14) to prevent uncontrolled flow in the event of a failure such as rupture or separation of the connector. A shutoff sleeve (62) moves in a body (26) between an upstream, open position and a downstream, closed position. A spring (52) biases the shutoff sleeve toward the open position. The sleeve includes a flow metering passage (64), and a pressure drop resulting from excess flow through the passage moves the sleeve to the closed position against a shutoff seat (60). A time delay is provided by a damping assembly (70) including a variable volume damper chamber (82) defined in part by a flexible bladder (72). Upstream pressure is communicated to the damper chamber by a restricted flow passage provided by metal to metal contact of a washer (92) against a body surface (96).
Bibliography:Application Number: CA20042524740