Abstract: The disclosure relates to a plastic jacket having air spaces formed by spaced walls used to insulate hot and cold piping systems and the fittings for those systems. The jacket is made from multiple segments, which are joined together along their longitudinal joints. The segments are joined to each other by tongue and groove connections. One segment can be cut longitudinally and glued to another segment to make a larger segment to fit various diameters of pipe. In a further embodiment, the plastic jacket is modified to form the duct of a heating, ventilating and air conditioning system. The inner wall of the jacket forms the air duct. In both embodiments, at least some of the segments have hinge portions created by omitting the inner wall at the hinge portions.

Abstract: Composite flexible air ducting comprising an elongated inner lining of plastic reinforced by a spirally wound coil member providing an elongated continuous air passage; a layer of natural fiber insulation surrounding the inner lining and an outer sheath surrounding the layer of natural fiber insulation. The outer sheath and the layer of fiber insulation are bonded to each other by a layer of adhesive having substantial thermal insulating properties.

Abstract: A pipe insulation jacket comprises two jacket members that can be joined to form a hollow cylinder. Both jacket members are made of a dimensionally stable, thermally insulating material. Both jacket members are provided with an elastic coating layer extending over the inner surface and over one of the radially extending end faces of the jacket members. The outer surfaces of the two jacket members are covered by a common tape linking the jacket members at one side in such a way that they can be spread apart at the other to such an extent that the insulation jacket can be radially moved onto the pipe to be insulated. The tape extends over the jacket member at the side where the two jacket members are spread apart, and its inner side is provided with an adhesive layer to interconnect the two jacket members once the pipe is enclosed.

Abstract: The present invention embodies a temperature control device for preventing the formation of alkane hydrates in a subsea oil and gas production equipment component having at least one flow path through which a well fluid is permitted to flow, the well fluid having a flow temperature and a lower hydrate formation temperature at which hydrates will form in the well fluid, the temperature control device comprising a housing positioned in heat exchange relation with respect to the flow path and a phase change material disposed in the housing, the phase change material having a melting point which is below the flow temperature but above the hydrate formation temperature, whereby when the temperature of the phase change material drops to its melting point, the phase change material will solidify and its latent heat will be transferred to the well fluid to maintain the temperature of the well fluid in the flow path above its hydrate formation temperature.

Abstract: A method for inhibiting external corrosion on an insulated pipeline including a pipe insulation positioned outside and around the pipe and a coating material around the insulation by positioning a plurality of concentrated charges of alkaline material in the insulation material.

Abstract: A removable/reusable insulating cover includes an insulating material, a flexible and puncture resistant coating, a flap which is an extension of the coating and a hinge which is an integral part of the coating. The system provides a flexible yet durable insulation cover, which may be removed and reused.

Abstract: There is disclosed an elbow protection cover constituting a bending portion of the protection cover covering insulating material used for insulation of pipes with heat insulating material, wherein the whole curved surface of the above-mentioned cover is integrally fabricated by press drawing of a thin metal plate. There can be provided a high quality elbow protection cover wherein cost performance is good, and high strength and prevention of water leak or the like can be achieved by introducing a mass-production method of elbow protection covers instead of manual operation where board members are joined by soldering or the like.

Abstract: An insulating system for pipes is provided which includes at least two different types of pipe insulation, wherein each pipe insulation is a pipe jacket formed by two mating sections, a first section and a second section with each section having a mating surface, wherein further when the two mating sections are put together with the mating surface of the first section exactly abutting the mating surface of the second section, they form a tubular structure having a bore which is a suitable size to receive a pipe. Of the three possible types of pipe insulation available, insulation A, insulation B, and insulation C, each pipe insulation type is formulated to insulate pipes having a different surface temperature, and yet pipe insulations A, B, and C each have identical outer diameters.

Abstract: Pipes or pipelines insulated on their surface or surfaces are described. The pipes or pipelines may be for submerged service, below the surface of water. The insulation chosen may be an epoxy substantially free of phenolics and one or more of glass or ceramics. The coating may be an abrasion resistant coating. Such pipes or pipelines are generally intended for the transport of fluids, which can include natural gas, natural gas liquids, crude oil, refined products, chemicals, combinations thereof, and the like.

Abstract: Pipes or pipelines insulated and optionally coated on their interior surface or surfaces are described. Pipes or pipelines insulated and optionally coated on their exterior surface or surfaces are also contemplated, The pipes or pipelines may be for submerged service, below the surface of water. The insulation chosen may be an epoxy substantially free of phenolics and one or more of glass or ceramics. The coating may be an abrasion resistant coating. Such pipes or pipelines are generally intended for the transport of fluids, which can include natural gas, natural gas liquids, crude oil, refined products, chemicals, combinations thereof, and the like.

Abstract: Sheet having a multilayer structure, called a sandwich sheet, composed of two rolled metal skins which are joined together by a core, in which sheet the core contains a stainless steel wool.

Abstract: Thermal insulating device for high temperature reactors and furnaces utilizing highly active chemical gases in a reducing atmosphere, in the form of a shell of resin bonded flexible graphite sheet.

Abstract: The application discloses an insulated pipework system comprising an outer sleeve, an inner flow pipe and an insulating layer within the space therewith, characterized in that the insulating layer comprises at least one discrete block of a first insulating material substantially surrounded by a second insulating material in particulate form. This enables the discrete blocks of the first insulating material to provide the majority or all of the necessary insulation, whilst the particulate second insulating material can be packed around the first material in order to provide the necessary shear force transfer. It is preferred if the first insulating material has a lower thermal conductivity than the second, more preferably a thermal conductivity of less than half of the second. It is still more preferred if the thermal conductivity of the first material is less than 35% of the second, yet still more preferably less than 25%. It is also preferred if the first insulating material is silica block.

Abstract: An adjustable jacket and method of covering an insulated conduit, the jacket having two parts which together form a cylindrical configuration over the insulated conduit. Overlapping flanges of the two parts equipped with grooves and ridges allow tightening of the two parts so that the jacket conforms to the underlying conduit having bends and curves.

Abstract: Thermal insulating panels for application to HVAC rectangular ductwork each comprise a first layer of solid insulation with a second layer of solid insulation laminated to the first layer. An outer metal layer of embossed aluminum is laminated to the second layer of each panel. These panels are secured to the outside of the rectangular ductwork with at least four interlocking panels, one on each side thereof joined together at the four corners of the ductwork. The outside metal layer of embossed aluminum of at least some of the panels includes right angle flanges along the sides thereof for attachment to an adjacent panel. A number of panels are arranged end-to-end in a series along each side of the rectangular duct, and an overlapping joint is provided between adjacent panels in the series.

Abstract: An adjustable jacket and method of covering an insulated conduit, the jacket having two parts which together form a cylindrical configuration over the insulated conduit. Overlapping flanges of the two parts equipped with grooves and ridges allow tightening of the two parts so that the jacket conforms to the underlying conduit having bends and curves.

Abstract: A coolant line for air-conditioning systems that are operated with carbon dioxide as a coolant, particularly air-conditioning systems of motor vehicles, can be tightly connected at both ends to connecting parts. The line has an inside, metallic, corrugated hose that is coolant-tight, a radially pressure-resistant, flexible, metallic jacket that surrounds the hose with radial spacing and provides axial support, and a compression-proof, temperature-resistant intermediate plastic layer that fills the space between at least the radially-outside corrugation crests of the metal hose and the jacket so as to prevent play.

Abstract: An insulated tubing is disclosed having a liner, a pipe surrounding the liner defining an annulus between the pipe and the liner, a plurality of sets of spacers, and an insulating material located between the liner and pipe, substantially filling the annulus. The spacers within a set of spacers are spaced apart from each other around the circumference of the liner and each set of spacers is spaced apart from each other set along the length of the liner. A method for producing the insulated tubing is also disclosed.

Abstract: In a super-insulation support system disposed in an annular space between concentric inner and outer corrugated tubes, a number of axially spaced rings is provided, which are interconnected by axially extending rods mounted in circumferentially spaced relationship alternately to the inside and the outside of the axially spaced rings thereby forming a cylindrical frame structure, which is disposed adjacent the inner corrugated tube and super-insulation is disposed on the cylindrical frame structure and supported thereby at a distance from the corrugated inner tube.

Abstract: A glass lined container such as a vessel or conduit for liquid or gaseous material is disclosed consisting of a strong outer shell and an inner glass liner. The glass liner is spaced uniformly from the outer shell and a molten material which will expand when solidified is poured into the space between the outer shell and glass liner and solidified to place the glass liner under high compression.

Abstract: Contoured structural members containing vibration damping mechanisms and methods for making the same. The contoured structural members comprise composite or metal materials sandwiching a support or stabilizing structure. The contoured structure can be provided by tube rolling (or roll wrapping) the composite or metal materials and the support structure together and then, if necessary, bonding them or connecting them. With a contoured and generally non-flat structure, applications for the structural members of the present invention are nearly limitless. As well, by incorporating a vibration damping mechanism, the structural impact of oscillations caused by varying mechanical loads is diminished.

Abstract: A pipe insulation and fire retardant composition and method for coating the inside and/or outside surfaces of a thin flexible metal, fiberglass or plastic jacket, and measured in fractions of an inch, for pipes and pipe fixtures carrying hot fluids, to markedly reduce the loss of heat.

Abstract: A body is enclosed by an elongated tube of shape-recovering tubing having a direction of elongation and having materials properties described by a recovered state and an expanded state which contracts toward the recovered state upon heating. The piece of shape-recovering tubing is processed to have a first region in the recovered state, the first region being in the form of a stripe extending parallel to the direction of elongation, a second region in the expanded state, and, optionally, printed matter on the first region. The tube is positioned overlying the body, and the second region is heated so that it contracts toward the recovered state.

Abstract: A flexible secondarily-contained pipe of unitary or one-piece construction characterized in that it comprises the following combination of features: an inner supply pipe (1); an inner barrier layer (6) which forms an internal surface of the supply pipe (1) and which is formed from a first polymeric plastics material, an outer containment pipe (2); a plurality of passages associated with the secondary containment pipe, said passages being adapted to receive any fluid which has leaked from the inner supply pipe and to convey said fluid to a remote leak detector.

Abstract: An insulating element (1) for pipes, for forming a suspending or supporting section, with two carrier strips (1, 2) between which thermally insulating, dimensionally stable and flexible mouldings (5, 6) are alternately arranged. The mouldings (5, 6) are arranged transversely to the longitudinal axis of the carrier strips (2, 3). The insulating element (1) is of a basic continuous shape at least 1 meter long. Individual suspending or supporting sections can be cut off from this basic shape by means of a cutting device. The inner carrier strip (2) facing the pipe which is to be insulated is compression-flexible.

Abstract: A pipe insulation coupling for coupling adjacent facing ends of elongated cylindrical pipe insulation tubing encased around a fluid pipe includes an elongated body extending longitudinally between a first end and a second end. The elongated body includes a pair of C-shaped clam shell portion interconnected by a living hinge for pivotal movement between an open position for receiving the pipe and a closed position clamped around the pipe and insulation tubing. Each clam shell portion includes an outer tube wall and an inner tube extending longitudinally between the first and second ends and defining a channel therebetween for receiving the adjacent facing ends of the insulation tubing. A planar wall interconnects the outer tube wall and the inner tube wall midway between the ends to abut the adjacent ends of the insulation tubing.

Abstract: An adjustable jacket and method of covering an insulated conduit, the jacket having two parts which together form a cylindrical configuration over the insulated conduit. Overlapping flanges of the two parts equipped with grooves and ridges allow tightening of the two parts so that the jacket conforms to the underlying conduit having bends and curves.

Abstract: In a super-insulation support system disposed in an annular space between concentric inner and outer corrugated tubes, a number of axially spaced rings is provided, which are interconnected by axially extending rods mounted in circumferentially spaced relationship alternately to the inside and the outside of the axially spaced rings thereby forming a cylindrical frame structure, which is disposed adjacent the inner corrugated tube and super-insulation is disposed on the cylindrical frame structure and supported thereby at a distance from the corrugated inner tube.

Abstract: Two embodiments of insulated pipework system are described. The first comprises an outer sleeve, an inner flow pipe and insulating material within the space therebetween and is characterised by the use of a longitudinally compressed elastomeric member in the space between the inner and outer pipes as the primary means for transferring longitudinal forces between the inner and outer pipes. The second comprises an outer sleeve pipe, an inner flow pipe, an insulating material within the space therebetween, other than hollow alumina-silicate microspheres, wherein a longitudinally compressed elastomeric member is provided at intervals in the space between the inner and outer pipes. Compression of the elastomeric member is preferably by way of rigid plates on either side thereof which compress an the elastomeric member. For example, bolts can be passed through bores in the plates and elastomeric member and tightened thereby to compress the said member.

Abstract: An insulation system for shafts through which hot gases flow, especially exhaust gas shafts of gas turbines has an insulation layer (20, 40) as well as a flat cover (26, 39), which holds the insulation layer (20, 40) and covers it against the gas flow. The cover (26, 39) is guided by bearing rails (21, 41). In such an insulation system, the number of spacers (22, 23, 24; 47, 48, 49) by which the bearing rails (21, 41) are fastened to a shaft wall (25, 50) shall be minimized. Furthermore, the insulation system shall be able to be manufactured with a high degree of prefabrication in the workshop and with low assembly effort at the construction site. The bearing rails (21, 41) are fastened to the shaft wall (25, 50) with a fixed mount (31, 51) and at least one movable mount (32, 52).

Abstract: An explosion resistant blanket for a flow line component having a plurality of flexible inner layers constructed from a high tensile strength material. A flexible cover layer covers the inner layers and is constructed from a material that is resistant to degradation from ultraviolet light and that is water resistant. Elongate straps are attached to the inner and cover layers that wrap around the pipeline component and secure the blanket to the component.

Abstract: An easy to install one-piece end cap is provided to protect the cut end of insulation over a preinsulated tubing. The end cap has a tubular body which is dimensioned to receive the uncompressed cut end of the insulation in a first passageway portion and, in a second passageway portion to provide a snug fit. A third passageway portion is dimensioned to slide over the exposed end of the tubing so that it may exit the end cap to permit connection. A tube end capped with the end cap is also provided, as is a method of end capping a preinsulated tube.

Abstract: A thermoformed PVC, modified PVC, CPVC, metal or coated metal cover, covering system and method is provided for covering assemblies of pipe and pipe insulation, hangers, support rods and mechanical assemblies wherein the assembly is biocide treated, covered by and completely enclosed by the cover, the cover is sealed in order to prevent bacteria growth within the cover while allowing a smooth outside surface for biocide application. The cover can be modified to facilitate the application of biocide after the assembly is covered by providing resealable openings in said cover.

Abstract: A lagged flexible tubular pipe for conveying fluids, produced by helically winding at least one strip made of thermal insulation around a flexible central core at a uniform pitch and with a gap. Jointly winding gap-free an intermediate extruded section into the gap between the turns of strip and sealing the gap. The intermediate section is made of a material which volume wise is nearly incompressible.

Abstract: This invention is related to ultra-light conduit for used air and a method for construction of such a conduit with sandwich sheet type of material such as “THERMO-FOIL™” permitting to avoid losses of heat and humid air. The method of construction of a used air rectangular conduit includes the following five (5) steps: 1) cutting of a sandwich sheet 2) sealing around the sandwich sheet 3) heat formation of lengthwise channels on the surface of sandwich sheet 4) assembling the sandwich sheet into a conduit of a predetermined length and 5) installing a lengthwise vertical reinforcement into the conduit and providing a male adaptor to a fore end of the conduit which could be adapted to an aft end of a joining conduit.

Abstract: A method for inhibiting external corrosion on an insulated pipeline including a pipe and a coating material around the pipe by positioning an alkaline material in the coating material.

Abstract: A rigid air duct is provided for conducting flowing air. The air duct includes a fiber glass board that is deformed to define a channel for conducting flowing air. A mat facing is adhered to an interior surface of the board and is made of a fabric including glass fibers. Uncured portions of a binder material in the fiber glass board are heated and cured to adhere the mat facing to the board.

Abstract: Prefabricated insulated pipe sections are constructed of an inner pipe surrounded by a concentrically-positioned outer pipe. End portions of the inner and outer pipes are joined with bellow members so that an annular space is defined. A portion of the inner pipe is wrapped with layers of insulation material with inert insulating granules positioned between the layers. The annular space is partially evacuated to below atmospheric pressure. Multiple pipe sections may be joined by their inner pipes through brazing or other known methods. The joints and neighboring bellow members on abutting pipe sections are covered by vacuum sleeves that are sealed and provide a vacuum tight joint.

Abstract: There is provided a sound-absorbing and a heat-insulating duct comprising a nonwoven cloth layer 1, a reinforcing core 2, a foam strip layer 3, a bonding resin 4 and resin-coating layer 5. The nonwoven cloth layer 1 is formed by wound spirally a nonwoven cloth 10 into a tube-like shape in which adjacent side edges of the adjacent nonwoven cloths 10 are brought in abutment against or lapped with each other so as to form a bonding portion 1a. The reinforcing core 2 made of hard synthetic resin material is wound spirally on the bonding portion 1a while a surface of the reinforcing core 2 being brought into contact with the nonwoven cloth 10 is welded or bonded to the nonwoven cloth 10. The foam strip layer 3 is formed by wound spirally a foam resin strip 30 having a width approximately equal to a width of the nonwoven cloth 10. Both adjacent edges 3a, 3b of the foam resin strip are disposed on adjacent reinforcing cores 2, 2 respectively.

Abstract: Thermal insulating panels for application to HVAC rectangular ductwork each comprise a first layer of solid insulation with a second layer of solid insulation laminated to the first layer. An outer metal layer of embossed aluminum is laminated to the second layer of each panel. These panels are secured to the outside of the rectangular ductwork with at least four interlocking panels, one on each side thereof joined together at the four corners of the ductwork. The outside metal layer of embossed aluminum of at least some of the panels includes right angle flanges along the sides thereof for attachment to an adjacent panel. A number of panels are arranged end-to-end in a series along each side of the rectangular duct, and an overlapping joint is provided between adjacent panels in the series.

Abstract: A method and device for drawing off humidity, such as condensation fluid, from an insulation layer around apparatuses, such as pipe lines and the like. The method is characterized in that a hollow body, such as a sleeve is arranged in a passage in the insulation material, and where a number of openings in the wall portion of the hollow body or the sleeve communicates with the surroundings outside the insulation layer, whereby condensation fluid can be drawn off from the insulation layer to the surroundings via the hollow body in the form of the sleeve.

Abstract: An insulated air duct apparatus including insulated duct modules and associated insulated fitting apparatus for transferring a volume of fluid in a warm air heating and air conditioning installation without employing external insulation or structural support members, otherwise required to support and insulate duct apparatus including a plurality of lightweight duct modules in combination with take-off connectors for joining such modules, each duct module comprising duct walls joined by corner members wherein said duct walls and take-off connectors comprise rigid fibrous glass (RFGB) with reinforced facing having inherent structural strength such that each duct module is self supporting.

Abstract: This invention is related to ultra-light conduit for used air and a method for construction of such a conduit with sandwich sheet type of material such as “THERMO-FOIL™” permitting to avoid losses of heat and humid air. The method of construction of a used air rectangular conduit includes the following five (5) steps: 1) cutting of a sandwich sheet 2) sealing around the sandwich sheet 3) heat formation of lengthwise channels on the surface of sandwich sheet 4) assembling the sandwich sheet into a conduit of a predetermined length and 5) installing a lengthwise vertical reinforcement into the conduit and providing a male adaptor to a fore end of the conduit which could be adapted to an aft end of a joining conduit.

Abstract: It is of the type having a thermal insulation structure placed around a central core (1) of longitudinal axis and it is characterized in that the thermal insulaton structure comprises at least one layer (3) consisting of separate solid strips (4), each strip being wound with a very long pitch and a maximum wind angle to the horizontal axis of less than 30°.

Abstract: There is provided a heat insulating hose which comprises a seamless cylindrical inner tube formed of a synthetic resin, and a cylindrical heat insulating layer formed of a foamed synthetic resin for covering an outer peripheral face of the inner tube, characterized in that the inner tube is provided at its one end with a cylindrical part for connection with a drain outlet of an air conditioning appliance and formed with a number of ring-shaped protrusion stripes which project toward its outer circumference over an entire length thereof in its axial direction except the cylindrical part spacing a distance W which is wider than an axial width w of each of the ring-shaped protrusion stripes, and that an area b of a desired range spaced by a determined length a from the cylindrical part is an area wherein a number of ring-shaped protrusion stripes are formed at a smaller distance s.

Abstract: Prefabricated insulated pipe sections are constructed of an inner pipe surrounded by a concentrically-positioned outer pipe. End portions of the inner and outer pipes are joined with bellow members so that an annular space is defined. A portion of the inner pipe is wrapped with layers of insulation material with inert insulating granules positioned between the layers. The annular space is partially evacuated to below atmospheric pressure. Multiple pipe sections may be joined by their inner pipes through brazing or other known methods. The joints and neighboring bellow members on abutting pipe sections are covered by clam shells that are sealed and filled with insulation.

Abstract: A pipeline comprises flow lines in which petroleum products flow and a protective carrier pipe around the flow lines. It further comprises a buoyancy module made of a thermally insulative material that is mechanically resistant to the hydrostatic pressure at the underwater site at which the pipeline is installed, the module providing the buoyancy required for installing the pipeline, in an economical manner.

Abstract: A generally tubular laminated acoustic damping pipe cover to be used on a water pipe to reduce the noise level of the pipe, having a sound insulation layer whose area density is 1.5-5.0 kg/m2 and a sound absorptive layer whose thickness is 4.0-10.0 mm, covered with a heat-contractile film which when heat treated will tighten the acoustic damping pipe cover on the water pipe but hold the pipe cover in a sliding fashion. The acoustic damping pipe cover is lightweight and easy to manipulate, and provides an excellent acoustic damping performance.

Abstract: A piping system for conveying one or more product flow lines within an outer casing includes insulation members on the product flowline(s) 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 insulation members includes a plurality of halves that can be assembled together circumferentially and end-to-end. In one embodiment, a frame carries a U-shaped insulation member that is polymeric and foam filled. The frame is ballasted so that it can be towed to a job site underwater yet buoyant and above the seabed, then lowered onto the pipeline by flooding the ballast tanks.

Abstract: A protective sleeve for a fluid pipe is disclosed. The sleeve includes an inner and outer member which provide heat, sound and abrasion resistance. The inner member includes a pair of terminal edges which are spaced apart a predetermined distance. This distance is greater than the distance between the terminal edges of the outer member. A method of making such a protective sleeve is also disclosed.