Abstract An insulating section and a method for insulating a length of pipe in northern regions subseqeunt to installation of the pipe is provided by a prefabricated pipe insulation system comprising (a) forming a cylindrical metallic outer jacket longitudinally flanged for seaming, (b) applying a layer of synthetic insulating foam to the interior of the outer jacket thereby forming insulating sections of insulating material adhering to an outer jacket, (c) placing said sections end-to-end longitudinally and circumferentially along the length of pipe, (d) providing batten straps, adaptable to mating with the longitudinal seams, around the pipe circumference and extending between adjacent seams of insulating sections, and (e) securing the insulating section against the pipe and the circumferential battens by forming the longitudinal seam which incorporates the battens. The pipe insulating system provides a means of forming pipe insulation sections in a mobile unit near the pipe location and is particularly applicable in northern regions to insulate newly laid or existing pipelines.
An insulated pipeline having a plurality of insulation sections secured against the pipe by longitudinal and circumferential securing means at insulating section joints wherein said longitudinal securing means is a double fold standing rib seam formed by doubly folding pairs of flanges extending radially outward from the longitudinal edges of circumferentially adjacent insulation sections and said circumferential securing means comprises batten straps free of exposed edges.
Claim 2
Dependent Claim
66 words
An insulated pipeline having a plurality of insulation sections secured against the pipe by longitudinal and circumferential securing means at insulating section joints wherein said longitudinal securing means is a double fold standing rib seam formed by doubly folding pairs of flanges extending radially outward from the longitudinal edges of circumferentially adjacent insulation sections and said circumferential securing means comprises batten straps free of exposed edges.
Claim 3
Dependent Claim
66 words
An insulated pipeline having a plurality of insulation sections secured against the pipe by longitudinal and circumferential securing means at insulating section joints wherein said longitudinal securing means is a double fold standing rib seam formed by doubly folding pairs of flanges extending radially outward from the longitudinal edges of circumferentially adjacent insulation sections and said circumferential securing means comprises batten straps free of exposed edges.
Claim 4
Dependent Claim
66 words
An insulated pipeline having a plurality of insulation sections secured against the pipe by longitudinal and circumferential securing means at insulating section joints wherein said longitudinal securing means is a double fold standing rib seam formed by doubly folding pairs of flanges extending radially outward from the longitudinal edges of circumferentially adjacent insulation sections and said circumferential securing means comprises batten straps free of exposed edges.
Claim 5
Dependent Claim
31 words
An insulated pipeline according to claim 1 wherein said insulating sections comprise an outer metallic jacket and a layer of insulating foam adhering to the interior surface of the outer jacket.
Claim 6
Dependent Claim
23 words
An insulated pipeline according to claim 2 wherein the transverse edge of said insulation sections forms an arc of about 90* to 180*.
Claim 7
Dependent Claim
23 words
An insulated pipeline according to claim 2 wherein said jacket is made from a metal selected from aluminum, carbon steel, and stainless steel.
Claim 8
Dependent Claim
13 words
An insulated pipeline according to claim 2 wherein said insulating foam is polyurethane.
Claim 9
Dependent Claim
18 words
An insulated pipeline according to claim 1 wherein the edges of said batten straps are folded back 180*.