Cryogenic reciprocating pump intermediate distance piece
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United States of America Patent
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Dec 23, 2014
Grant Date -
May 16, 2013
app pub date -
Nov 11, 2011
filing date -
Nov 11, 2011
priority date (Note) -
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Abstract
The present invention teaches providing heating elements into the nose of an intermediate distance piece of a cryogenic reciprocating pump in order to warm the piston packing seals of the pump. The heating elements increase the temperature of the piston packing seals to limit deformation of the seals while the pump is in operation. In addition, a warm, dry vapor purge may be provided to the interior of the intermediate distance piece to reduce or eliminate rime from interfering with the piston packing seals.
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