Abstract: A plug-in coupling for cryogenic lines is described, having at least two pipes (3, 4, 9, 10) fitted one inside the other like a male/female connection while forming an annular gap (16), in which plug-in coupling the pipes (3, 4, 9, 10) are releasably connected to one another by a flange connection (5, 11) located at their “warm” end, the annular gap (16) between the two pipes (4, 9) is sealed at the “cold” end by an annular seal (7) and at the “warm” end by an annular seal (5d) located in the region of the flange connection (5, 11), and the annular gap (16) is connected to a safety valve (13) in the region of the flange connection (5, 11).

Abstract: A continuous communications conduit for use in a well is disclosed. A first (101) and second (102) conduit section are threadably engaged and a weldment is formed (200). A heat shield conduit (220) can be disposed within a bore (111, 112) of a conduit section (101, 102) between a first conduit section shoulder (151) and a second conduit section shoulder (152). A first (301), second (302), and third (303) conduit section can be threadably engaged and a weldment (400) formed. An electrical conductor (300) can be disposed in a bore of the conduit sections (301, 302, 303). A heat shield conduit (320) can be disposed between a first conduit section shoulder (351) and a second conduit section shoulder (352). Optionally, an elastomeric stabilizer (410, 420) may be utilized.

Abstract: A rigid fastener, for securing to one another adjacent portions of a cover member made of resiliently deformable material, has an end portion with an outward end section of relatively small outside diameter and an axially adjacent inward section of relatively large outside diameter. The end portion of the fastener is engagable in either of two positions in a corresponding recess formed into at least one of the adjacent portions of the cover piece, affording a high level of holding power in its fully inserted position and affording a low level of holding power in a partially inserted position.

Abstract: A method for manufacturing a double walled pipeline comprises providing a pipeline section including an inner tubular member and an outer tubular member, providing a coupling member, and controlling the stress distribution in the inner tubular member and the outer tubular member by coupling the inner tubular member and the outer tubular member directly to the coupling member.

Abstract: A cryogenic material transfer system incorporates a pipe-in-pipe configuration with a nanoporous or microporous insulating layer filling the annulus between the inner and outer pipe. The insulating layer is of sufficient flexibility to absorb and expansion or contraction of the inner pipe due to the flow of cryogenic material therethrough. For longer transfer systems a bulkhead is provided between adjacent pipe joints. Intermediately of the pipe joints an additional bulkhead may be employed to provide additional sealing or water stops and for providing provide additional load transfer. A fiber optic sensor system is installed in the annuals between the inner and outer pipe.

Abstract: Screw holes are provided on a contacting surface of an insulator so as to enable a carburetor to be mounted on the insulator at a plurality of positions rotated about an axial center of an intake hole. The insulator is mounted on a cylinder at a predetermined position while the carburetor is mounted on the insulator by inserting bolts for mounting the carburetor into the screw holes through through holes of the carburetor. Accordingly, the carburetor can be mounted at a plurality of positions rotated about the axial center of intake holes relative to an engine body. Thus, a protruding direction of a throttle lever from the carburetor, i.e., an operating direction of the throttle lever, can be changed.

Abstract: A one-piece shaped aluminum or stainless steel half fitting for an insulated pipe. The method may include cutting a predetermined sized blank from material stock. A top and a corresponding bottom die may be installed into a press along with a matching press plate. The predetermined sized blank may then be inserted onto the press plate and aligned with locating marks on the press plate. Once the blank is installed properly into the press, the method may further include cooperatively bringing the top and bottom dies together to press the blank into a specifically shaped half fitting. When pressed, excess flange material may be created along the perimeter of the fitting shape and excess end portion material is created at end portions of the fitting shape. The top die may then be separated from said bottom die and the shaped half fitting may then be removed from the press. The method may further include trimming the excess flange material and excess end portion material from the shaped half fitting.

Abstract: The invention relates to the envelopment of a connection of at least two pipes or parts thereof by an open-celled rigid foam, the production of such an envelope and also the use of open-celled rigid foam for protecting connections of two pipes.

Abstract: A gap sub assembly can be used to form an electrical isolation in a drill string, across which a voltage is applied to generate a carrier signal for an electromagnetic (EM) telemetry system. The assembly comprises two conductive generally cylindrical components fashioned with a matching set of male and female rounded coarse threads, held such that a relatively uniform interstitial space is formed in the overlap space between them. The third component is a substantially dielectric electrical isolator component placed into the gap between the threads that effectively electrically isolates the two conductive components. Injecting the dielectric material under high pressure forms a tight bond resistant to the ingress of conductive drilling fluids (liquids, gases or foam), thus forming a high pressure insulating seal.

Abstract: A heat exchanger for cooling reaction gas. A cooled tube receives hot reaction gas from a hot, uncooled tube. The cooled tube comprises a cooled inner tube and a tubular jacket that extends about the inner tube. A tubular connection is disposed between the uncooled and the cooled tubes, and includes a fork-shaped inlet head via which the inner tube is in communication with the uncooled tube. The inlet head is provided with an outer tubular section and an inner tubular section between which is disposed an intermediate space filled with heat-insulating material. The outer tubular section is connected to the tubular jacket. The inner tubular section is spaced slightly axially from the inner tube and is provided with an edge region that juts outwardly and is spaced slightly axially from the inner tube, this slight axial spacing being equal to or less than a maximum thermal expansion of the inlet head.

Abstract: Method of assembling a vacuum insulated piping run for conducting a cryogenic fluid in which piping sections are produced in a first location and then assembled in a second location into a piping run. Each of the piping sections incorporates an outer cylindrical casing and an inner pipe for transport of the cryogenic fluid to form an inner annular region for containing insulation that can be radiation shield insulation and aerogel blankets. The piping sections are joined by welding the ends of the inner pipes together and then joining the outer cylindrical casing by a shell-like section. Points of connections are tested by vacuum testing techniques as each of the connections is made. Thereafter, the annular region is purged with a condensable gas such as carbon dioxide and subjected to a subatmospheric pressure.

Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.

Abstract: An assembly for establishing a water-tight seal for a conduit passing through a wall or other structure wherein the conduit conveys heated fluid, such as exhaust gasses. The assembly is adapted to minimize the heat transferred to the wall or other structure by creating a circuitous heat transfer path in conjunction with thermally insulating materials.

Abstract: A ventilation chimney or exhaust fan flue section for hog barns has inner and outer plastic tubes formed by edge welding plastic sheets. A snug fitting insulation sheet is slid between the tubes. Collars of male and female coupling elements are inserted into the ends of the section between the inner and outer tubes and secured by screws passing through the outer tube and into the collars. The chimney can be installed by combining sections using a suitable adhesive.

Abstract: A subsea insulation device is described. The device includes a frame coupled to and at least partially enclosing a subsea component. A bag may be at least partially enclosed in the frame. The bag may substantially seal against at least one surface of the subsea component when the bag is at least partially inflated. A port may be attached to the bag. The port may allow the bag to be coupled to a fluid provider connector so that fluid can be provided into the bag to inflate the bag.

Abstract: An improved protective jacket for insulated, angled pipe includes a metal jacket having a first portion and a second portion, each portion having a generally semi-circular cross-section, and including two or more fingers. Each of the fingers defines a fillet at a junction of the fingers and a baseline of the jacket. The fingers include a flat face at an inner angle and curve from the flat face to a superior surface of the jacket. A first finger is formed a minimum distance of about 0.5 inches from a second finger, and a width of the fingers is created by an isosceles triangle with a radius of curvature between about 0.3 inches and 0.5 inches.

Abstract: A unit element of undersea pipe, in particular for providing a bottom-to-surface connection, constituted by an assembly of two coaxial pipe elements of the PiP type (1) presenting an inner pipe element (2) and an outer pipe element (3) coaxial thereabout with an annular space (41) between the pipes, preferably including a thermally insulating material (42) in the annular space, and including at each end a junction piece (6, 6a-6b) in the form of a steel forging for connecting together two of the unit elements of axial pipe (1), the junction forgings (6) being welded to the ends of both of the inner and outer pipes, the unit elements being characterized in that the inner pipe element (2) comprises in its main portion an inner tube (21) of metal presenting thickness that is small relative to the thickness of the ends of the inner pipes that are welded to the junction forgings (6), the thickness of the inner tube being less than 50% the thickness of the ends of the inner pipe, the inner tube (2) being covered in

Abstract: It is disclosed a connecting device for the manufacture of ducts for heating, conditioning, ventilation comprising a plate-like element (2) which is provided, on a face (2a) thereof at opposite positions, with at least two hooking points (3) adapted to penetrate contiguous portions to be joined of a duct (4) segment or of two consecutive duct segments. Also provided is a connecting process comprising a step of applying at least one connecting device (19 on either side of a junction line (4a) defined by two opposite longitudinal bands of a panel (5) adapted to form a duct (4) segment.

Abstract: A pipe-connector molded part for pre-insulated pipe conduits consisting of plastic, whereby the pipe conduit is pre-insulated with polyurethane foam and the pipe-connector molded part is positioned so that it can be connected to the internal wall of the pipe conduits to be connected by a method for connecting pre-insulated pipe conduits consisting of plastic by way of the molded part.

Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.

Abstract: The invention relates to a data and energy transmission system for telescopic boarding bridges with an inner section (2) joined to a first structure (4) and an outer section (3) connected to a second structure (5). The system has conductor rails (6) along the inner section (2) of the telescopic tunnel (1) connected to the first structure (4), and at least one pantograph mechanism (7) for electrically connecting the conductor rails (6) with the second structure (5), which is in permanent contact with said conductor rails (6) sliding along such rails accompanying the extension and retraction of the telescopic tunnel (1). There are additionally data transmission means connected to the first structure (4) and to the second structure (5).

Abstract: An insulated double-walled well completion tubing system comprising having an inner tubing, an outer tubing for insertion into a well casing; the inner tubing located within the outer tubing, with the bottom ends of the inner and outer tubings sealed together, an insulation layer in the annular volume between the inner and outer tubings, a wellhead connected to the top end of the outer tubing, a source of heated fluid connected to the wellhead, at least one sealing spacer in the annular space above the insulation layer and below the upper end of the inner tubing, for preventing fluid from passing downward through the annular volume and reaching the insulation, the wellhead enclosing a space of sufficient dimensions to accommodate the upper end of the inner tubing at any temperature thereof. In another embodiment the insulated double-walled tubing string may be a continuous, flexible string installed continuously into a well casing.

Abstract: Fire protection of pipe joints and valves in a pipeline is provided by two socket halves situated tightly against each other and against the pipe line and surrounding the joint, valve, or such. The socket halves are made from perforated stainless steel plate and have a fire insulation of heat expanding epoxy material on the inside, outside, or on both sides. One of the edges of the socket halves situated against each other comprises an internal cover plate with fire insulation which covers the joint between the two halves and prevents penetration of hot gases into the internal of the socket halves.

Abstract: The invention relates to a hose that comprises at least one inner layer (1) produced from an elastomer material, an embedded reinforcement carcass produced from a textile and/or metal material, an outer layer produced from an elastomer material and a coupling having a flange section inside the hose end. The inventive hose is characterized in that the coupling comprises a fitting, a supporting flange and at least one annular lamina. A first reinforcement carcass, consisting of at least one reinforcement layer, extends along the entire inside of the fitting and changes in the flange area from the axial to the radial direction of extension. The radial area of the first reinforcement carcass is mounted between the supporting flange and the annular lamina(e). A second reinforcement carcass, likewise consisting of at least one reinforcement layer, partially or completely holds the outside of the fitting, especially by way of fastening means.

Abstract: A system and method to connect a cryocooler (refrigerator) to a superconducting magnet or cooled object allows for replacement without the need to break the cryostat vacuum or the need to warm up the superconducting magnet or other cooled object. A pneumatic or other type of actuator establishes a thermo-mechanical coupling. The mechanical closing forces are directed perpendicular (cross-axially) to the cryocooler axis and are not applied to the thin wall cryocooler body or to the thin cryostat walls or to the cooled object or to its shield. It is also possible that some of the compressive force be transferred to the cryocooler body. In that case, the extensions are designed so that the forces transferred to the cryocooler thermal stages do not exceed allowable stresses in the cryocooler stage.

Abstract: A compound pipe for conveying fluid comprising an inner pipe positioned within an outer pipe such that the walls of the inner pipe and outer pipe define a gap. The compound pipe further including an insulating material for insulating the inner pipe from the outer pipe, the insulating material and outer pipe defining a fluid channel.

Abstract: To mount a partition cover (2) in a pipe joint (1), a nut (12) is screwed onto a joint body (11) to sandwich the partition cover (2) between the joint body and the nut. At this time, the partition cover is supported so as not to press a sleeve (13). As such, an opening (1a) of the pipe joint is sealed while preventing the sleeve from being deformed due to the partition cover being mounted.

Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.

Abstract: An apparatus for protecting exposed pipeline joints on weight coated pipelines used in offshore applications includes a pliable cover sleeve which overlaps a pair of weight coat sections that surround the pipeline on each side of the pipe joint. The cover sleeve circumferentially envelops the pipe joint, forming an annular space enclosed between the pipe and the cover sleeve and bordered by the pair of weight coat sections. The cover sleeve includes a number of protruding ridges forming a number of chambers between the ridges in flow communication with the annular space. A joint-filling material of polyurethane foam formed by polyurethane chemicals fills the annular space and the chambers between the ridges of the cover sleeve. As the joint filling material hardens it interlocks with the ridges of the cover sleeve, securing the joint filling material between the cover sleeve and the pipe joint.

Abstract: A thermally-insulated pipeline for the transportation of a cryogenic liquid, comprising three coaxial pipes formed of sections, one inner pipe made of a material having a low thermal expansion coefficient, a middle pipe and an outer pipe made of steel. The pipes are linked by linking parts which join sections of each respective pipe and take up the loads produced by thermal expansion or contraction when the pipes change temperature. The linking parts that join the inner pipe and the middle pipe are separated from the linking parts that join the middle and outer pipe, so that a thermal bridge cannot form between the inner pipe and the outer pipe.

Abstract: A pipe-in-pipe pipeline has a bulkhead that transfers thermal stress from an inner pipe to an outer pipe, wherein at least part of the bulkhead forms a conduit for a product traveling through the inner pipe. Most preferably, the pipeline is a cryogenic pipeline for transport of liquefied natural gas. Where desirable, insulating material may be disposed between the inner pipe and outer pipe, while spacers may maintain the distance between the pipes.

Abstract: Cryogenic swivel (1) including inner and outer concentric annular walls defining a toroidal chamber (7) between the walls, a fluid duct connected to a first opening (10) in the outer wall and a second fluid duct connected to an opening (9) in the inner wall, wherein a number of conducting elements (14, 15) are situated inside the toroidal chamber (7), connecting a lower and an upper part of the chamber (7).

Abstract: A joint is provided permitting relative radial and axial movement between a first wall thermally expanding at a first amount and a second wall thermally expanding at a second amount. The joint includes a first fixed connection between a first edge of the second wall and the first wall. The joint also includes an endplate including a first edge and a second fixed connection between a second edge of the second wall and the first edge of the endplate. The joint also includes a clip and a third fixed connection between the clip and the first wall. The joint further includes a fourth fixed connection between the clip and the endplate, the clip permitting the relative radial and axial movement.

Abstract: Insulated piping and methods of making and using insulated piping are disclosed herein. An insulated pipe according to one embodiment includes a plurality of elongate pipe sections. Each pipe section includes first and second ends, an inner pipe for transporting temperature sensitive fluids, an intermediate pipe extending around the inner pipe, and an outer pipe extending around the inner pipe and the intermediate pipe. The inner pipe is operatively coupled to the outer pipe to form an airtight insulation space between the inner and outer pipes, and the intermediate pipe segregates the airtight insulation space into a plurality of independent insulation spaces between the inner and outer pipes. At least one independent insulation space is radially inward of another independent insulation space.

Abstract: An apparatus for protecting exposed pipeline joints on weight coated pipelines used in offshore applications includes a pliable cover sleeve which overlaps a pair of weight coat sections that surround the pipeline on each side of the pipe joint. The cover sleeve circumferentially envelops the pipe joint, forming an annular space enclosed between the pipe and the cover sleeve and bordered by the pair of weight coat sections. The cover sleeve includes a number of protruding ridges forming a number of chambers between the ridges in flow communication with the annular space. A joint-filling material of polyurethane foam formed by polyurethane chemicals fills the annular space and the chambers between the ridges of the cover sleeve. As the joint filling material hardens, it interlocks with the ridges of the cover sleeve, securing the joint filling material between the cover sleeve and the pipe joint.

Abstract: An improved system is provided for connecting thermally insulated cryogenic delivery piping including a bayonet coupler comprising a thermally insulated section of dual walled piping, said dual walled piping having an annular space between the walls of said piping, the annular space maintained at high vacuum, said bayonet coupler sized to be securely received by internal sleeves disposed at the to-be-joined ends of said cryogenic delivery piping.

Abstract: An apparatus for protecting exposed pipeline joints on weight coated pipelines used in offshore applications includes a pliable cover sleeve which overlaps a pair of weight coat sections that surround the pipeline on each side of the pipe joint. The cover sleeve circumferentially envelops the pipe joint, forming an annular space enclosed between the pipe and the cover sleeve and bordered by the pair of weight coat sections. The cover sleeve includes a number of protruding ridges forming a number of chambers between the ridges in flow communication with the annular space. A joint-filling material of polyurethane foam formed by polyurethane chemicals fills the annular space and the chambers between the ridges of the cover sleeve. As the joint filling material hardens it interlocks with the ridges of the cover sleeve, securing the joint filling material between the cover sleeve and the pipe joint.

Abstract: An electrical isolation connector subassembly for interconnecting adjacent tubular drill rods of a drilling system used in drilling bore holes in earth formations, the connector comprising an electrically insulative sleeve being sandwiched between two electrically isolated subassembly components, the sleeve providing an exterior gap between the edges of the spaced apart electrically isolated components, the exterior gap having a width of less than 50 cm.

Abstract: An electrical isolation connector subassembly for interconnecting adjacent tubular drill rods of a drilling system used in drilling bore holes in earth formations, the connector comprising an electrically insulative sleeve being sandwiched between two electrically isolated subassembly components, the sleeve providing an exterior gap between the edges of the spaced apart electrically isolated components, the exterior gap having a width of less than 50 cm.

Abstract: A half elbow used with a second similar half elbow clads insulation or other structures about a bend. Each half elbow is formed of separate segments of thin sheet material fastened together. Each segment includes first and second edges adapted to be fastened to corresponding second and first edges of adjacent segments. The segments are fastened together and shaped so that they form a curving contour between outside edges and inside edges of the segments. The outside edges of the segments together form an outside seam and the inside edges of the segments together form an inside seam. Two outside seams of two half elbows can be joined together along with two inside seams of the two half elbows to entirely surround and cover a bend.

Abstract: A pipe-connection moulded part comprising an inner pipe part, an insulating layer and an outer casing of plastic, wherein the outer casing and the insulating layer are formed from the same plastic, for example polyurethane. A method of producing the pipe-connection moulded part is also proposed.

Abstract: An insert for use in connecting two lengths of pipe, each having a plastic liner. The insert consists of an inner tubular member of plastics material for connection at either end to the plastic liners of two pipe lengths, an insulating sleeve surrounding a central portion of the inner tubular member and a ring of heat-resistant material overlying a part of the insulating sleeve to be positioned, when in use, beneath a location at which the pipe length is butt welded, wherein the insulating sleeve includes an insulating material which is at least partially enclosed with a sheath, such that the sheath can be mechanically connected to the interior of one pipe length.

Abstract: An insulation shield for covering insulation disposed about a pipe includes an elongated body extending along a longitudinal axis between a first end and a second end. The elongated body includes a cylindrical tube wall extending along the longitudinal axis between the first end and the second end. The tube wall has an outer surface and an inner surface. The inner surface defines an elongated channel adapted to receive pipe insulation tubing. A slit extends from the first end to the second end and is defined by a first edge and a second edge and parallel to the longitudinal axis. An elongated hinge is parallel to the longitudinal axis extending from the first end to the second end.

Abstract: A swivel joint system for a cryogenic liquid transfer line, such as a liquefied natural gas line, and for return of cold gas associated with the cryogenic liquid transfer. The system includes a swivel joint for the passage of the cryogenic liquid and a swivel joint for the return of the cold gas. Each swivel joint includes a conduit with a fixed conduit portion and a rotating conduit portion, rotating relative to the fixed conduit portion, and a rotational guide interposed between the fixed and rotating conduit portions. The swivel joint device for the passage of the gas return is integrated in the swivel joint device for the passage of the cryogenic liquid.

Abstract: Apparatus and method for quickly disconnecting a wetted parts subassembly from a paint spray gun wherein the wetted parts subassembly includes a spray tip, pump cylinder and piston and paint cup components including a pump housing cylinder support carrying the pump cylinder and having a pair of protrusions formed on a pump housing cylinder support, a frame having a pair of slots aligned to receive the protrusions when the pump housing cylinder support is received in the frame, a locking lever pivotably attached to the frame adjacent at least one of the slots and movable between a latched position wherein the pump housing cylinder support is retained to the frame, and an unlatched position wherein the pump housing cylinder support is removable from the frame.

Abstract: A connector for piping destined to the transfer of fluid at very low temperature, in particular liquefied natural gas is described. The coupling comprises a first and a second length of piping (8, 9) that are provided with respective closing valves (20, 27) and destined to be fastened, respectively, to a piping (2) for the inflow of the fluid and to a piping (6) for the receiving of the fluid. Onto the second length of piping (9) a quick-coupling mechanism (34) is mounted that comprises a circumferential sequence of jaws (36) that are suitable to provide a firm front coupling between terminal flanges (12, 17) of the two lengths of piping (8, 9), and means (35 38) for the driving of the jaws. Each one of said lengths of piping (8, 9) is surrounded by an external coating band (23, 30) that defines with said length of piping a thermally insulating interspace (25, 32).

Abstract: A tubular assembly 10 is disclosed for passing fluids within a hydrocarbon recovery well. The tubular assembly 10 has an insulated connection 12 between insulated tubing segments 14, 16. Tubing segments 14, 16 are connected via a threaded connection, and the resulting joint 10 is insulated by an external insulating sleeve 18. The insulating sleeve 18 may have unitary construction, such that the sleeve 18 may only be installed or removed by first breaking apart the joint 10. Alternatively, the sleeve 18 may comprise a plurality of arcuate partial-sleeves, which may be assembled about or removed from the completed joint 10 without first breaking apart the joint 10.

Abstract: An insulating apparatus for use with vacuum insulated tubing sting to reduce heat loss through the joints, where the apparatus includes an insulator adapted to surround the joint and a latching joint protector adapted to surround the insulator and hold the insulator against the joint, where the protector also includes a channel for receiving injection and/or control tubing. The insulator is capable of reducing heat loss through the joints of a vacuum insulated tubing string by as much as 95%.

Abstract: A bulkhead assembly for a pipe-in-pipe system includes coxially inner and outer components which are screwed together along a first threaded portion and a locking device which includes a locking element screwed onto a threaded portion on one of the components having threads running opposite to the threads on the first threaded portion. One of the components further includes a radially extending abutment shoulder at an end of the first threaded portion away from the second threaded portion which abuts against the other component.

Abstract: A unitary protective pipe cover for disposition about a pipe configuration under a conventional sink, and which is sized and shaped so as to cover the J-trap, as well as the waste arm, in the undersink pipe configuration. In the event that the waste arm extends at an acute angle with respect to the J-trap, the pipe cover can be severed and the two severed pipe cover sections can be secured together in a generally tamper proof arrangement.