Remote bolted flange connection apparatus and methods of operation thereof
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United States of America Patent
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Nov 4, 2008
Grant Date -
Jun 30, 2005
app pub date -
Nov 6, 2001
filing date -
Nov 6, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A single-module deployable bolted flange connection apparatus (10) makes up standard flange joints (24, 32) for various pipeline tie-in situations, such as spool piece connection and flowline-tree connections, without the use of divers and auxiliary multiple pieces of equipment. An outer Flange Alignment Frame (FAF) (14), carries one or more claws (38) for grabbing the pipe/spool to provide flange alignment. The claws are suspended and driven by a novel arrangement of five hydraulic rams (412-420) A crash-resistant inner frame (148) houses complete connection tooling (150, 152 etc.) The tooling performs the final alignment steps, inserts the gasket and studs, applies the required tension, and connects the nuts. Studs and nuts are stored separately from the tooling in an indexed carousel, to permit multiple operations, reverse operations (disconnection), and re-work of failed steps, all without external intervention.
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