Abstract: A modular insulated conduit, and a packaged kit comprising plural modular conduits. Each modular conduit has a conduit and an insulating sleeve adhered about the conduit. The conduit is longer than the insulating sleeve, extends beyond both ends of the sleeve, and may optionally be either rigid or flexible. Optionally, the modular conduit has a reflective barrier which may be between the conduit and sleeve or outside the sleeve. The kit includes connecting and branching fittings. The insulation is effective from subfreezing to hyperboiling temperatures.

Abstract: In a flexible line pipe comprising an inner corrugated metal tube (4), an outer corrugated metal tube (5) located at some distance from the inner tube (4) and a spacer as well as an insulation material between the inner and the outer metal tubes, whereby a pressure that is less than atmospheric pressure prevails in the ring-shaped gap (6) between the tubes, the spacer comprises two cords (7, 8) made of fiber-reinforced plastic applied to the inner tube (4) and wrapped in opposite directions. The insulation material (9) is a fleece material, and the pressure in the ring-shaped gap is between 10−3 and 10−1 mbar.

Abstract: An improved, cost-effective, insulated flexible pipeline that is insulated with a bituminous composition.

Abstract: There is provided a heat-insulating and noise reducing duct constituted by reinforcing core 1, a thick felt layer 2, a foamed resin strip layer 3 and a resin-coating layer 4. The reinforcing core 1 is made of hard polyolefin resin material and wound spirally at predetermined intervals. The thick felt layer 2 is wound spirally on an outer circumferential surface of the reinforcing core so that adjacent side edge portions of the felt layer 2 are lapped over or brought into contact with each other, while the shape of the felt layer is retained by the reinforcing core 1. The foamed resin strip layer 3 made of polyolefin resin material and wound spirally on an outer circumferential surface of the felt layer 2 so that adjacent side edge portions of the foamed resin strip layer 3 are in abutment against or in tight contact with each other. The resin-coating layer 4 provided to cover an outer circumferential surface of the foamed resin strip layer 3.

Abstract: In a metallurgical furnace of the type for re-heating metal billets and slabs, a pair of composite refractory tiles for insulating fluid-cooled structural members of the furnace. The tiles are a composite of a cast refractory shell which extends radially inward at selected portions to contact the furnace member. Attachment assemblies are embedded in the cast refractory shell and maintain proper alignment of each tile with the furnace structural member. In portions of the tile where contact with the furnace member is not made, a ceramic fiber insulating blanket fills a hollow between the refractory shell and the furnace member. Incorporating the ceramic fiber insulating blanket into each tile decreases furnace heat loss as compared to solid cast refractory tiles of comparable thickness.

Abstract: The invention relates to a co-extruded multilayer plastic pipe comprising an inner pipe and an outer pipe and between them a middle layer of a softer material than the inner pipe. The invention also relates to a method of producing a co-extruded multilayer pipe in a multilayer extruder, and an apparatus for producing the co-extruded multilayer pipe.

Abstract: A ventilation duct includes an envelope lined on the inside by insulation panels. The panels have a lining on the side of the flow channel of the duct and on at least one part of at least one of transverse edges of the duct. This lining extends over at least one part of each of both sides of the edge and is integrated with the panel. Z shaped sections may be used to hold adjacent panels.

Abstract: An improved, cost effective, insulated pipeline suitable for use in water or below grade, that is insulated with a bituminous composition unmodified or modified with filler, extenders or other materials or structures to improve the dimensional stability of the bituminous composition.

Abstract: Ducts are formed from rigid or semi-rigid insulation boards by forming a plurality of longitudinally extending, spaced apart, parallel kerfs in a first major surface of each of the insulation boards which is adapted to be the interior surface of the duct. When the insulation board is formed into a duct of the preselected dimensions, the shoulders of the kerfs adjoining the interior surface of the duct abut and, preferably, the insulation material in the shoulders of the kerfs is compressed. The flexibility of the insulation boards, in the direction of the widths of the insulation boards, is controlled by increasing the depths and/or the widths of the kerfs and/or decreasing the spacing between the kerfs to make the insulation board more flexible and by decreasing the depths and/or the widths of the kerfs and/or increasing the spacing between the kerfs to make the insulation board less flexible.

Abstract: A line pipe with a double casing is especially used in transporting oil products. In a preferred embodiment, such a pipe is characterized in that, in a sealed annular space, located between an inner tube and an outer tube both coaxially arranged inside each other, there is included a self-sustaining plate made of open pore-microporous material, which is flexible enough to be externally wound around the inner tube. This plate is preferably less in thickness than said annular space such that a passageway is left free between the former and the outer tube whereby low pressure is maintained.

Abstract: A sealing member is provided which can be spirally wrapped around an elongate article (e.g., a cable) comprises a strip of sealing material (e.g., gel sealing material), and at least one series of gripping elements situated adjacent to the strip of sealing material and extending beside a longitudinal edge of the sealing material. In use, the gripping elements cause the sealing member to grip an elongate article around which it is spirally wrapped. The sealing member may also include a support strip to which the strip of sealing material and each series of gripping elements are attached.

Abstract: An internally insulated, corrosion resistant pipeline. An inner fluid barrier is formed preferably by a polymer liner. The outer pipe may be a steel pipe. The liner is provided with a plurality of passages or an open annulus. The passages in the liner or annulus between the pipe and liner are filled with an insulation material.

Abstract: A pipeline comprising pipe with a bituminous composition laminated onto a surface thereof and mechanical means for preventing the pipe from moving under its weight relative to the composition, the composition being applied to a thickness that will substantially inhibit heat transfer between the contents of the pipeline and the environment, wherein the means for keeping the pipe from moving through the insulating composition is a sleeve positioned along the pipeline, and adjacent to the insulating composition, the sleeve being held in a fixed position relative to, and spaced away from the pipeline by mechanical means that contact the pipe and the sleeve.

Abstract: An insulating housing for exposed pipeline valves, the housing having a base member which remains attached to the pipeline or pipeline connecting flanges and a removable cover member, where the base member is suspended above the ground and does not extend above the pipeline, so that access to the pipeline valves is maximized when the cover member is removed.

Abstract: A method of applying a thermally insulating coating to a pipe (10) or the like, comprises the steps of applying a thermally insulating foam material (14) to the pipe in a plurality of discrete segments over the surface area of the pipe, and applying an outer protective coating of water-proof elastomeric material (18) which bonds to the pipe between said segments, fills the gaps therebetween and forms an outer layer encapsulating the thermally insulating foam. The foam may be applied as annular bands extending around the circumference of the pipe, applied by ribbon pouring. The encapsulation of the foam (14) by the elastomer (18) allows the use of foams such as polyurethane foam having poor resistance to water ingress under hydrostatic pressure, since any ingress will be limited to individual encapsulated foam segments. Additional coating layers may include an anti-corrosion coat (12), a high temperature barrier layer, an impact shock absorbing coat or intermediate elastomer layers.

Abstract: A heat insulated hose includes a cylindrical member. This cylindrical member is formed by helically winding a laminated tape having a base layer of a foamed resin, a permeable coat film laminated on an inner surface of the base layer, and an air-tight coat film laminated on an outer surface of the base layer, with adjacent side edges thereof abutted against each other. A resin reinforcing member is helically wound on an outer peripheral surface or inner peripheral surface of the cylindrical member in a manner striding over the adjacent side edges of the laminated tape. The respective side edges of the laminated tape is thermally fused with the resin reinforcing member, thereby integrally joining between the adjacent side edges.

Abstract: An insulation blanket for a pipeline, comprising at least one insulating cell, wherein the or each insulating cell comprises a protective layer and an insulating layer.

Abstract: A deep sea insulated pipeline comprises an inner pipe which is encased lengthwise by an insulating core. The insulating core comprises macrospheres surrounded by syntactic foam that includes a semi-rigid resin binder and microspheres. The semi-rigid resin binder reinforces the macrospheres to provide sufficient strength to withstand the hydrostatic pressure at depths in excess of several thousand feet of water, and is yet flexible enough to accommodate bending associated with deep sea pipe laying operations. The deep sea insulated pipeline may also include a protective outer casing. The inner pipe extends through and cooperates with the outer casing to define an annulus chamber containing the insulating core. The outer casing may be a plastic pipe. In a preferred embodiment the semi-rigid resin binder includes Bisphenol-A epoxy resin, an anhydride curing agent, and a flexibilizer.

Abstract: An acoustically isolated structure for use on a high temperature pipe in a luid environment is disclosed. Thermal insulation is provided radially outward from and adjacent to the pipe, and a sleeve is located on the outer surface of the insulation preventing environmental fluid from damaging the thermal insulation. A spacer is joined to the sleeve to position an acoustical barrier away from the pipe. The spacer allows environmental fluid circulation between the sleeve and the acoustical barrier.

Abstract: A method and apparatus for re-insulating underground steam pipe in situ includes the steps of creating at least one hole in the ground, inserting a liner into the hole, using a drill string to drill a hole in the conduit, inserting a tubing into the liner so that a first end of the tubing is positioned next to the pipe and a second end of the tubing is attached to a pumping system. The foam is then pumped through the tubing around the pipe and then the tubing is removed and the foam is allowed to cure and become rigid, thereby functioning as insulation.The plastic foam may be a polyisocyanurate or a urethane-modified polyisocyanurate.

Abstract: A self-drying insulation system for a pipe or a container (1) which has a temperature that is periodically lower than the dew point temperature of the ambient air includes an inner capillary-active slot between the surface of the pipe or container (1) and a surrounding heat insulating layer (3) in which one or more capillary-active openings (5) are provided, these openings connecting the inner side of the insulating layer (3) with its outer side, and a water-repellent membrane (6) surrounding the outer side of the insulating layer so as to form an outer slot (7) between the outer side of the insulating layer (3) and the membrane (6).

Abstract: An electrochemical converter is disposed within a pressure vessel that collects hot exhaust gases generated by the converter for delivery to a cogeneration bottoming device, such as a gas turbine. The bottoming device extracts energy from the waste heat generated by the converter, such as a fuel cell for the generation of electricity, yielding an improved efficiency energy system. Bottoming devices can include, for example, a gas turbine system or an heating, ventilation or cooling (HVAC) system. The pressure vessel can include a heat exchanger, such as a cooling jacket, for cooling the pressure vessel and/or preheating an input reactant to the electrochemical converter prior to introduction of the reactant to the converter. In one embodiment, a compressor of a gas turbine system assembly draws an input reactant through the pressure vessel heat exchanger and delivers the reactant under pressure to a fuel cell enclosed therein.

Abstract: Pipe insulation sleeve and adhesive construction therefor, having a reduced amount of stress applied to the adhesive. A flexible foamed elastomeric tubular pipe insulation sleeve has a longitudinally extending slit which enables the sleeve or jacket to be placed around a pipe or portion thereof. An adhesive is applied to opposite walls of the slit, forming an adhesive joint, in order to hold the construction together after the insulation sleeve has been placed around a section of pipe. Stress on the adhesive joint is minimized or reduced in either of two ways. First, the tubular sleeve is formed with a V-shaped slit in which the opposite faces or walls of the slits intersect at an acute angle. In a preferred embodiment, the V is inverted (i.e., the open end of the V faces inwardly) and formed essentially along the minor axis of the elliptical shape which the sleeve assumes over time.

Abstract: A piping system for conveying one or more product flow lines within an outer casing includes a layer of insulation on each of the product flow lines to prevent heat lost and an improved spacer arrangement forming an interface between the product flow lines and the casing to prevent damage to the casing and flow lines as well as reduce friction when the flow lines are pulled through the casing. The spacer includes a pair of halves that can be assembled together using a bolted connection, for example, with flanges provided on the halves. An integral polymeric body comprises each of the halves with projecting portions spaced circumferentially about each of the spacers, the projecting portions extending longitudinally and radially and having inclined surfaces that lessen stress during the pulling of product flow lines through the outer casing. Annular shoulders on the spacer mate with corresponding annular shoulders of the insulation layer to prevent heat loss at the interface.

Abstract: A flexible and relatively low cost cryogenic conduit is described. The flexible cryogenic conduit of the present invention comprises a first inner corrugated tube with single braided serving, a second outer corrugated tube with single braided serving concentric with the inner corrugated tube, and arranged outwardly about the periphery of the inner corrugated tube and between the inner and outer corrugated tubes: a superinsulation layer; a one half lap layer of polyester ribbon; a one half lap layer of copper ribbon; a spirally wound refrigeration tube; a second one half lap layer of copper ribbon; a second one half lap layer of polyester ribbon; a second superinsulation layer; a third one half lap layer of polyester ribbon; and a spirally wound stretchable and compressible filament.

Abstract: An insulating jacket, that is removable and reusable, for insulating a hot or cold fluid distribution system is described. The jacket is made of a plurality of sections which mate and seal together to effectively seal the pipe section and/or fitting from the surrounding ambient atmosphere. Each of the jacket sections can be made of a clear thermoplastic material and the entire assembly is designed to employ the trapped air, between the inside wall of the jacket and the system element, as the insulator. Plural jackets are used to form plural radially spaced trapped air gaps.

Abstract: An acoustical and thermal energy insulating liner for gas transfer ducts, primarily in heating, ventilating and air conditioning applications is provided for installation within ducts having curvilinear cross section. The liner is made from a rectangular central block of insulating material such as foam or nonwoven web of glass fibers. A plurality of grooves running the full length of the block second major dimension and parallel thereto are cut through the front face of the block to a depth short of the block thickness. The front face is coated with an elastically deformable substance that forms a barrier layer adjacent the substrate insulating material. The barrier layer bridges the gaps of the grooves and thus contains the insulating material at the floor and side walls of the grooves internal to the central block.The barrier layer can be formed after the grooves are cut by spreading across the front face of the central block a layer of foam.

Abstract: A subsea flowline or pipeline with passive insulation having improved transient heat-loss characteristics. The flowline or pipeline has a phase change material insulating the flowline pipe joints and/or pipe sections to greatly extend the cooldown time of produced or processed hydrocarbon fluid mixtures being transported therethrough during shut-in conditions. The phase change material surrounds a carrier pipe of the flowline or pipeline. The phase change material may be either dispersed or encapsulated within standard insulation. Additional insulation and/or a jacket pipe surrounds the phase change material and holds it against the carrier pipe. The phase change material can be of a micro-encapsulated or bulk-encapsulated type.

Abstract: Pipes used for carrying hot fluids such as steam and process liquids and gases, often above 212.degree. F., and pipes for carrying cold fluids such as for refrigeration and air conditioning systems, are usually insulated where they extend for any appreciable distance in areas of different temperatures, for reducing heat transfers. Such pipes are used in central heating and cooling distribution systems for cities, schools, universities, prisons, military bases, in industrial processing plants, and the like, whether installed above ground or underground. Polyisocyanurate and similar foamed insulation materials including polyurethane are better insulators than those now commonly used, such as foamglass, fiberglass, mineral wool, and calcium silicate; polyisocyanurate has a very low K factor and is stable at up to 400.degree. F. for sustained temperatures and up to 450.degree. F. peak temperatures.

Abstract: The present invention relates to an arrangement in a pipe bundle, more specifically to a method and a system for heating subsea or on-shore pipelines, especially pipelines for transportation of substantially oil, gas and water, said pipelines (8, 108, 208) being arranged in a substantially cylindrical outer carrier pipe (1, 101, 201), and for the purpose of providing an arrangement wherein the quantity of heating cable can be reduced, and wherein the manufacturing of such arrangement can be simplified, at the same time as the finished arrangement will provide appropriate heating of the pipelines and the contents thereof, it is according to the invention suggested an arrangement comprising:a carrier pipe (1, 101) having an outer and/or inner thermal insulation (2, 102),one or more longitudinally extending energy carriers (3, 4, 5; 103, 104, 105) extending in the longitudinal direction of said carrier pipe (1, 101) for the dissipation/transfer of heat directly and/or indirectly to said pipelines (8, 108), respe

Abstract: A ventilation duct includes an envelope lined on the inside by insulation panels. The panels have a lining on the side of the flow channel of the duct and on at least one part of at least one of transverse edges of the duct. This lining extends over at least one part of each of both sides of the edge and is integrated with the panel. Z shaped sections may be used to hold adjacent panels.

Abstract: A duct lining insulation system for lining variable air volume boxes, air handling units, and ducts for heat ventilation and air conditioning has a sheet of a flexible, closed cell foam composition, said sheet having a face with a substantially smooth surface and having a coating of a pressure sensitive adhesive on a second face of the sheet, further providing that the pressure sensitive adhesive has a volatile content that is sufficiently low so that the adhesive gives off substantially no volatiles.

Abstract: An apparatus and method primarily intended for repairing pipes and conduits, particularly high-pressure pipes and conduits, such as a watermain. To prevent the creation of a gap between a repair sleeve and the inside of a host pipe, when an epoxy or other curable sealant is used, due to the slight rebound that occurs during the locking of the edges of the sleeve, a bubble gasket or a quantity of loose bubbles is used. During such rebound and locking of the edges of the repair sleeve, the bubbles maintain a force against the sealant as the sealant cures. Although conduit repair is an intended specific application of the invention, the apparatus and method of the invention has broader applicability and are contemplated to encompass the securing of a curable sealant to a surface and the general bonding of two surfaces together.

Abstract: The present invention relates to an adhesive closure system. More specifically, this invention relates to an adhesive closure system with an abridged release liner. Initially, the abridged release liner allows partial exposure of the single adhesive layer to achieve a temporary bond. When desired, the release liner can be removed exposing the remainder of the adhesive to achieve a permanent bond. This type of closure system has numerous applications including the closure system for pipe insulation sleeves.

Abstract: An insulated air duct includes a flexible, reinforced, inner tubular core; a layer of partially compressed flexible, resilient fibrous insulation surrounding the core; and a flexible jacket, preferably with a longitudinally extending seam, spaced outwardly from the core and enveloping the layer of partially compressed fibrous insulation. The layer of partially compressed fibrous insulation is formed from a resilient blanket of air laid, randomly oriented, entangled fibers. The resilient blanket may have a low binder content or be binderless with the fibers unbonded and, possibly, lubricated.

Abstract: A removable reusable insulating unit suitable for insulating exposed pipe sections forming components of an insulated pipe system, the unit having a hollow body constructed of an insulating material which is capable of being easily cut the hollow body defining an interior and an exterior of the insulating unit, the interior sized to envelop an exposed pipe section on an insulated pipe system, the body having at least two pipe receptor areas, each sized to accommodate a component of an insulated pipe system.

Abstract: A carbon monoxide containing gas mixture at a temperature of 500.degree. C. is conducted through the inner protective tubing of a sheath tube lined with a thermally insulating protecting composition. The inner tubing is divided into sections and a potentially CO-free mass is introduced in the sheath tube in the regions of the thermally insulating mass to permeate the latter and form a barrier between the carbon monoxide gas and sheath tube, thereby eliminating hot spots and metal dusting corrosion.

Abstract: A method and device for on-site producing a cable at the location for placing the cable includes a mobile device supporting an arrangement for forming a protective sheath of the cable and an arrangement for inserting the optical fibers or electrical leads into the sheath and then discharging the sheath into a cable laying position. The device may include an arrangement for forming a trench for receiving the cable, an arrangement for inserting a filling compound into the interior of the sheath as the leads or fibers are introduced therein and means for supplying a filling material for filling the trench subsequent to insertion of the cable therein.

Abstract: There is provided an insulation kit comprising an inner waterproof layer for contacting a pipe to be insulated. On the outside of the inner waterproof layer there is insulation. Then, on the outside of the insulation there is a protective layer to guard the insulation from being damaged by rock, hammer blows, knife marks and the like. The insulation kit can be taken to the field and applied to the exterior of the pipe in a relatively short period of time. The electrical fusion wire can be activated by a voltage of 120 volts or 240 volts in about 12 amps. There results insulation around the pipe to be protected and which insulation provides an inner moisture-proof barrier; the insulation; and, a tough material to resist objects such as screw drivers, knives, rocks and the like.

Abstract: A method of insulating a heated surface comprising enveloping the surface by a first layer of a heat insulating material having a high thermal resistivity such as Mineral Wool, and enveloping the first layer by a second layer of a material having a lower thermal resistivity, such as Polyurethane.

Abstract: An air conveying duct has a foam core sealed on the inside and reinforced on the outside. The duct absorbs noise and neither introduces impurities into the air nor collects impurities from the air.

Abstract: A system for shielding an interior metal surface of a metal container from a hot fluid within the metal container wherein the hot fluid is at a temperature greater than a temperature limit of the metal, including a first insulating layer including metal clad insulation proximate the interior metal surface, a second insulating layer spaced from the first insulating layer including a perforated reflective metal shield and a third insulating layer spaced from the second insulating layer which is structurally stable and substantially inert to the hot fluid.

Abstract: A heat exchanger tube (2, 2a, 2b) is made using a hollow, impermeable, monolithic ceramic inner tube (4) and wrapping the inner tube with a circumferentially extending reinforcing material (12) impregnated with a slurry of ceramic particles, particle carrier medium and thermoset binder. The combination of the inner tube and the impregnated reinforcing material is first heated to solidify the thermoset binder. The combination is then sintered to drive off the particle carrier medium and themoset binder to create a two-layer heat exchanger tube including the inner tube and an outer tube (6).

Abstract: An insulating jacket for covering and insulating an exterior faucet against damage from exposure to cold temperatures. The insulating jacket comprises three plastic bags arranged concentrically and all opening in one direction. The innermost bag is covered on its exterior surface with adhesive, to which is adhered loose insulating fill material. The insulated innermost bag is surrounded by a fabric sock. The fabric sock is in turn surrounded by the second bag. A woolen sock surrounds the second bag. The third plastic bag surrounds the woolen sock. The open end of the resultant assembly is rolled to form a cuff. A draw cord is disposed to constrict the cuff over a faucet, pipe, or other component of the object being protected.

Abstract: An improved, cost-effective, insulated pipeline or assembly of pipelines suitable for use in water or below grade, that is insulated with a bituminous composition.

Abstract: A pipeline is made by joining a number of pipe sections, each of which includes an inner pipe structure and an outer pipe structure. The outer pipe structure, which may be zinc plated or encased in an protective elastomeric material, includes mating couplings at each end to fasten similar sections together end to end. The inner pipe structure includes a hole extending throughout the pipeline and means for sealing around the hole at each joint. The inner pipe structure is resiliently mounted within the outer pipe structure. The outer pipe structure of each pipe section extends in both directions past the ends of the inner pipe structure.

Abstract: System for thermal and/or acoustic insulation of a tube intended, for example, to allow the outflow of hydrocarbons originating from an oil deposit, consisting of a sleeve surrounding the tube over at least a part of its length. According to the invention, the sleeve consists of an aerogel. A method for thermal and/or acoustic insulation of a tube is also described.

Abstract: The present invention refers to an insulating and fixation system of steam tracers in fluid transportation pipings, comprising the supply of a first internal metallic piping (50) with diameter a few larger than the piping (52) to be heated, endowed with equally spaced internal rips (54) in the longitudinal direction for arrangement and fixation of heating extensions (56) and a second external thermoplastic piping (58) being one concentrical to each other, forming an annular space (60) and presenting itself as a double wall tubular cylinder (62), said annular space (60) forming between the said first internal piping (50) and the second external piping (58) being fulfilled with insulating material (64) without any contact with the said piping (52) to be heated or external surroundings.

Abstract: A backup structure for a pipe for feeding a molten substance of high temperature has a pipe and a thermal insulation material surrounding the pipe wherein the pipe is provided with a plurality of projections on its outer periphery at predetermined intervals, and each of the productions is held at its both sides by the thermal insulation material.

Abstract: A rubber composition comprises a hydrogenated NBR, zinc dimethacrylate, zinc diacrylate, or an admixture thereof, an epoxy compound and an organic peroxide vulcanizer. A hose is also provided, comprising an inner tube, a reinforcement layer and an outer tube, at least the inner tube being formed from the above rubber composition.