Back to results
US 4,381,801 AGranted
Thermal insulation for pipes and method for fabricating the same
AssigneeSulzer Brothers Limited
InventorAlfred Brunner
Life of this patent
Estimating the term…
Abstract
The thermal insulation is formed of a plurality of sheet metal elements which are aligned in interfitting manner to define a multiplicity of cells for disposition within or about a pipe or tube. The elements rest against the wall of the tube in a resilient manner and the cells defined by the elements retard heat transfer to and from the pipe wall.
Claims12
In combination,
- a pipe having a peripheral wall defining a flow path for a flowable medium, and
- thermal insulation slidably mounted on at least one side of said wall, said insulation including a plurality of spatially deformed sheet metal annular elements resting resiliently against said wall and aligned coaxially longitudinally of said pipe, said elements defining a plurality of annular cells therebetween for retarding heat transfer to and from said pipe wall.
In combination,
- a pipe having a peripheral wall defining a flow path for a flowable medium, and
- thermal insulation on an outside of said wall, said insulation including at least one spatially deformed sheet metal strip wound in overlapping helix relation against said wall and aligned longitudinally of said pipe, said strip defining a plurality of turns supporting and overlapping each other and a plurality of spirally extending cells between overlying turns for retarding heat transfer to and from said pipe wall.
In combination,
- a pipe having a peripheral wall defining a flow path for a flowable medium, and
- thermal insulation slidably mounted on at least one side of said wall, said insulation including a plurality of spatially deformed annular sheet metal elements resting resiliently against said wall and aligned coaxially longitudinally of said pipe, each of said elements defining a plurality of radially staggered cells between adjacent elements reducing heat transfer to and from said pipe wall, said cells containing a stagnant part of the medium flowing on the element side of said pipe.
In combination,
- a metallic pipe having a peripheral wall defining a flow path for a flowable medium, and
- thermal insulation on the outside of said wall, said insulation including at least one spatially deformed helically wound sheet metal strip resting resiliently around and against said wall of said pipe, said strip defining a plurality of windings supporting and overlapping each other and between adjacent windings a plurality of radially staggered cells for reducing heat transfer to and from said pipe wall, said cells containing a stagnant part of the medium flowing on the outside of said wall.
Dependencies are inferred from the claim text.