Abstract: A large scale geotextile tube includes a plurality of cylindrical geotextile segments permanently connected end-to-end via circumferential ribs. In one embodiment, each geotextile segment is formed of the sheet of geotextile fabric that has an overlapping region that measures at least 5% of the elongation at break length of the sheet and permanently connected with at least one transverse rib to form an axial closure.

Abstract: An adjustable bent housing includes an outer tubular member having an interior surface defining an interior bore. The outer tubular member has a first angular offset. An inner tubular member is provided and has an exterior surface. The inner tubular member has a second angular offset. The inner tubular member has at least one engagement end received within the interior bore of the outer tubular member. A desired cumulative angular offset is selected by relative rotation of the outer tubular member and the inner tubular member to adjust the positioning of the first angular offset relative to the second angular offset. A rotational stop is provided that limits relative rotation of the outer tubular member and the inner tubular member to a limited rotational range. A locking sleeve locks the outer tubular member and the inner tubular member in a selected rotational position to fix the cumulative angular offset.

Abstract: An existing-pipe rehabilitation method for constructing a rehabilitation pipe inside an existing pipe to rehabilitate the existing pipe. A rehabilitation pipe is constructed inside an existing pipe by coupling segments in the circumferential direction and the lengthwise direction of the existing pipe so that the rehabilitation pipe has a constant outer diameter. A lining material impregnated with a liquid curable resin is inserted into the rehabilitation pipe thus constructed. The liquid curable resin is cured to line the internal circumferential surface of the rehabilitation pipe with the lining material so that an inner diameter of the rehabilitation pipe lined with the lining material is smaller than an inner diameter of the existing pipe.

Abstract: A method for protecting a welded pipe assembly from metal dusting and a welded pipe assembly suitable for performing the method. The welded pipe assembly comprises two pipes, weld material joining the two pipes and insulating material. The pipes are protected from metal dusting by a protective coating. The present invention is useful for conveying gases comprising carbon monoxide at temperatures greater than 425° C. while preventing metal dusting of the welded piping assembly.

Abstract: A coupling (20) capable of connecting together two piping sections (30, 30) having the same outer diameter, two piping sections (40, 40) having the same inner diameter, or two piping sections (30, 40) having different diameters. The coupling (20) can have a unitary tubular structure and it can be made of the same material and in the same manner as conventional PVC piping. Installation of the coupling (20) during construction of a passageway can be accomplished in same manner as is conventionally accomplished with three distinct types of coupling.

Abstract: Provided is a submerged arc welding method for a steel plate. In welding the steel plate from an internal surface or an external surface by a submerged arc welding, welding condition is set such that, a cross-sectional area of internal weld metal S1 and a cross-sectional area of external weld metal S2 satisfy the formula (1), the formula (2), and the formula (3), that is, 0.40?(S1+S2)/t2?0.80 . . . (1), S1/t2?0.35 . . . (2), and S2/t2?0.45 . . . (3), wherein t is a plate thickness of the steel plate (mm), S1 is a cross-sectional area of the internal weld metal (mm2) excluding the cross-sectional area of a portion of the internal weld metal overlapping with the external weld metal after external welding, and S2 is a cross-sectional area of the external weld metal (mm2).

Abstract: A heat exchanger and related methods are provided. An example heat exchanger has moveable or flexible joints between tubular members that contain flowing heating medium. The moveable joints allow the overall structure of the heat exchanger to adapt to expansion, contraction, and other stresses of high-temperature, high thermal-gradient operation. The moveable joints also provide breaks in the structure, enabling repair or replacement of parts. A negative internal pressure is maintained to prevent flue gases and heat from escaping through the moveable joints, and prevents contamination of the ambient environment and products being dried. Moveable support measures also allow each tier of tubes to expand or contract independently of each other to accommodate thermal gradients within a given tier of tubes, within a given manifold, and between tiers of tubes, so that virtually all of the thermal stresses associated with conventional heat exchangers are mitigated or eliminated.

Abstract: A wind turbine tower in which a horizontal force received by an upper part of the tower is dispersed to a lower part of the tower or to a base so as to reduce the load acting on a tower shell and suppress deformation of the tower caused by an external force is provided. A monotype-type wind turbine tower 2 in which mainly a tower shell 21 is configured to bear load includes a platform 22 connected to an inner wall of the tower shell 21 and dividing an internal space of the tower in the vertical direction; an elastic bearing 30 attached by fixing one end thereof to the platform 22; and a load transmission member 23 disposed in the internal space of the tower and connecting another end of the elastic bearing 30 to the platform 22 located at a position facing the elastic bearing 30 or to a base B so as to transmit a horizontal force from the elastic bearing 30 to the tower shell 21 or the base B.

Abstract: A metal utility pole including a hollow, centrifugally cast, ductile iron utility pole member having a tapered exterior and variable wall thickness for providing a shortened press-fit, slip joint between interconnected pole members. The shortened joint length requires less metal than conventional press-fit, slip joints while maintaining or improving the overall strength of the joint. This is accomplished by increasing the wall thickness of one or both interconnected pole members along the joint relative to the wall thickness of the body or mid-section of the pole members.

Abstract: A conduit for facilitating the installation of insulation is disclosed. In one embodiment, the conduit comprises a body having one or more ribs and a collar having a forward end taper. In another embodiment, two or more pieces of conduit are joined to form a conduit network, with at least one piece of conduit comprising a body having one or more ribs and a collar having a forward end taper.

Abstract: A flexible segment system including: a first link; a first flexible hinge integral to the first link; and a second link integral to and continuing from the first flexible hinge.

Abstract: The present invention principally relates to a thermal insulation element (200) of cylindrical shape for a fluid transport pipe comprising an envelope (204) of longitudinal axis (X), a thermal insulation arranged in said envelope (204), the envelope (204) comprising a deformable annular zone, comprising a first (212.6) and a second (212.12) cylindrical surface that overlap and are able to slide against each other in the case of movement imposed by thermal loads applied to said pipe insulation element (200). The present invention also relates to a method of fabricating pipes for transporting fluids at high temperature, particularly hot gases, from elements according to the present invention by fitting a male connector of one element into a female connector of the other element.

Abstract: The present invention relates to a device for passively reducing the noise vibrations in a liquid resulting from a sound source (62) which is arranged below the liquid level of a body of water (w), the device comprising a noise-insulating pipe (1) which is designed to be arranged around the sound source, wherein the pipe comprises a number of telescopically extendable and retractable pipe sections, (2,3,4) fastening means for attaching at least one first and one second pipe section to one another in extended and/or retracted position, wherein the fastening means are designed to allow the mutual displacement of the pipe sections in a starting position and to attach the pipe sections to one another in a fastening position, and wherein the fastening means are also designed to keep the first (2) and second pipe sections (3) substantially acoustically disconnected in the fastening position.

Abstract: An airflow guide cover assembly includes a first airflow guide cover, and a second airflow guide cover. The first airflow guide cover defines a groove in an inner surface around a rear end of the first airflow guide cover, and a number of recesses in a rear end of an outer surface of the first airflow guide cover. A flange extends forwards from a front end of an inner surface of the second airflow guide cover, to engage in the groove of the first airflow guide cover. A number of blocks protrudes forwards from a front end of an outer surface of the second airflow guide cover, to engage in the corresponding recesses of the first airflow guide cover. The airflow guide cover assembly is modular, the airflow guide covers can be assembled to suit any situation where it's required.

Abstract: Exemplary illustrations of a supply tube, e.g., for a painting system, such as for supplying compressed air to a turbine in a rotary atomizer or for supplying an atomizer with a fluid medium, such as paint or a rinsing agent, are disclosed. An exemplary supply tube may include an upstream tube section and a downstream tube section. The upstream tube section may have a larger inner cross-section than the downstream tube section. A painting robot is also disclosed, which includes an exemplary supply tube.

Abstract: An omni-directional delivery tube includes at least two cascade units, each including an enclosure body and a connection axle. The enclosure body of one cascade unit receives and encloses the connection axle of another cascade unit, and the connection axle of the one cascade unit is connected to the enclosure body of an additional cascade unit. Thus, the combination of cascade units in cascade fashion provides a delivery tube of a desired length by connecting a desired number of cascade units. The second cascade unit that is in cascade connection with the first cascade unit provides angular positioning of a full circle of 360 degrees with respect to the first cascade unit for angular adjustment, and an additional, third cascade unit connected in the same cascade fashion provides a second angular adjustment of a full circle of 360 degrees, whereby omni-directional positioning can be realized without any potential dead zone.

Abstract: An insertion part of an endoscope includes at least a bending portion and two portions connected to one and the other ends of the bending portion. A bending structure of the bending portion is connected at its other end adjoining area overlapping with an adjoining area of at least one of the two portions to the adjoining area of the at least one of the two portions by a fixing member. A thread member wound on an end portion of a flexible covering member covering the bending structure, the end portion corresponding to the fixing member, has a pulled-in part arranged between the outer peripheral surface of that end portion of the cover member and a winding portion formed by the wound thread member, and the pulled-in part is arranged in a side of the fixing member. The winding portion of the thread member is covered by a resin layer.

Abstract: A bellows seal assembly and bellows valve equipped therewith. The bellows seal assembly includes an internal bellows, an external bellows, a hollow upper bellows seat, a first hollow lower bellows seat, and a second hollow lower bellows seat. One end of the internal bellows is fixed to the upper bellows seat and the other end is fixed to the second lower bellows seat. One end of the external bellows is fixed to the upper bellows seat and the other end is fixed to the first lower bellows seat. The external bellows is sheathed around the internal bellows. The first lower bellows seat is sheathed around the second lower bellows seat. The bellows valve includes the bellows seal assembly.

Abstract: Methods of joining pipe section and joined pipe assemblies are described. The pipe sections, e.g., pipes and couplers, are joined by a mechanical interference bond formed using a shape memory polymer key. The key can be inserted into a first keyway of one pipe section, the pipes fitted to align first keyway with a second keyway of the second pipe section, and the shape memory polymer activated to at least partially fill both keyways.

Abstract: A method for manufacturing a one-piece axle tube housing with localized sections of increased wall thickness includes providing a tube blank, inserting a mandrel having a reduced diameter profile, passing the tube through an extrusion die to conform the tube to the shape of the mandrel; and extraction of the mandrel from the tube to cause outward deformation of the tube at specific locations. A further reducing step may be used to form the final desired profile, including reduced inner and outer diameters along sections of the axle tube housing.

Abstract: A pipe joint for plastic pipe includes a bell member and a spigot member. The bell member includes a tubular plastic body wall having a metal reinforcement ring. The spigot member, which is insertable into the bell member, includes a tubular plastic body wall having an internal surface and an external surface and a longitudinal axis and metal reinforcement encased within the tubular plastic body wall. A plurality of plastic ribs extend from the external surface of the tubular plastic body wall and form a gasket channel.

Abstract: A pipe of unique design capable of augmenting any flow, including but not limited to: gas, liquid, particulate, plasma, and/or other fluid state or any combination thereof whether the flow is human and/or naturally made such that the tunnel produces a net decrease in pressure and a net increase in speed of a flow. The tunnel(s) can be used to augment flow to, from, in, at, and/or around turbines and/or rotors.

Abstract: This disclosure describes a method and apparatus for controlling the temperature of a welding zone for welding together pipe sections. The temperature is controlled by a flow of inert gas through the pipes. The inert gas flow is cooled and acts as a heat sink to remove heat from the weld zone thereby controlling the weld zone temperature.

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: In an energy conversion system, a flexible conduit is disposed on the outside of a high rise of terrain drawing a stream of heated air through the conduit from a low to a higher elevation, a support structure supports the flexible conduit to maintain a substantially uniform cross-sectional area of the conduit orthogonal to its longitudinal axis. A plurality of longitudinal sections are included that individually include a plurality of lateral modular segments disposed orthogonally about the longitudinal axis of the conduit to laterally enclose the interior of the individual section of the conduit. The conduit has an interior surface of a repetitive varying contour that reduces friction between the interior surface and the air that flows through the conduit.

Abstract: A water intake pipe of an ocean thermal energy conversion power plant is made by connecting a plurality of connecting sections, and each connecting section includes a plurality of steel ropes between two flange disks and covered with a soft tube material, and each connecting section is in a cage form and fixed by the flange disks, and the water intake pipe includes a support means, and the closer the connecting section to the sea surface, the higher is the load-carrying capacity of each steel rope, and the steel rope closer to the sea surface has a greater tension.

Abstract: A metal tube including at least one metal profile arranged so that the at least one metal profile forms at least one channel for conduction of a fluid, wherein the at least one metal profile includes a first and a second portion joined with each other by clad-rolling, wherein the clad rolled portions jointly form a clad-rolled seal that holds the at least one metal profile together.

Abstract: A repair kit for use in repairing hydraulic lines, such as are found on aircraft, is described along with a method of utilizing the repair kit to repair hydraulic lines in aircraft. The kit in its most basic form comprises one or more series of rigid hydraulic line tubing sections. Each series comprises a plurality of tubing sections bent to a variety of different angles. To repair a leaking or damaged line, the repair technician removed the damaged section. If the damaged section includes a bend therein, the technician selects a repair tubing section having a similar bend. The repair section is appropriately sized and secured into place to complete the repair.

Abstract: An extrudable polyvinyl chloride composition comprising from 80 to 99.9 percent by weight polyvinyl chloride for use in extruding a first part and a second part, wherein a fusion joint between the first extruded part and the second extruded part is formed by: A) composition at least a portion of a first terminal edge of the first extruded part and a first terminal edge of the second extruded part; B) engaging the melted terminal edges; and C) maintaining pressure between the engaged terminal edges to create a fused joint having a strength that is at least 50% of the tensile strength of the extruded part as measured by ASTM D638-2a. The extruded parts can be pipe sections.

Abstract: A hose or cable protector has a pair of articulating guides, each with rollers for creating an arcuate hose path around the sharp corner of a tunnel mouth which would otherwise cause abrasion to the hose. A stop imposes a guide to guide angle of eighty (80) degrees but the usual angle is greater and up to one hundred and twenty (120) degrees. Arches span the guides and retain the protector on the hose or cable. In a variant, the arches are spring loaded and adjustable to retain or release the hose. A control line positions the protector at the selected site.

Abstract: The tube flow turbulator, type TC-09/A-B is a unique invention, resulted from work in measuring and regulation technology, and resolving problems in this field of work. The tube flow turbulator solves the problem of dirt collection in control assemblies and enhances operation of a dirt collector. The advantage of the tube flow turbulator is that maximally reduces necessity for human intervention, and resolves problems in cases where there are no dirt collectors. It is simply installed in a closed pipeline system, between pipeline and control assembly flanges with two seals.

Abstract: A duct system comprises a duct region to be monitored and an aircraft leakage monitoring element (2). The aircraft leakage monitoring element comprises a sensor wire which is designed, at least in one section, in the shape of a coil with a plurality of windings.

Abstract: The disclosure provides a three-way structure, including a straight tube and a branch tube perpendicular to and connected with the straight tube, is characterized in that the inner surface of the straight tube is provided with a hollow structure surrounding the straight tube. The three-way structure of the disclosure can both attenuate the noise and simplify the pipeline arrangement of the unit.

Abstract: An aesthetic cover assembly includes first mounting portion of a cover wall for concealing a portion of a building structure that is secured to the building structure. An alignment pin is secured on one of the first mounting portions and the building structure. The alignment pin supports a second mounting portion of a cover wall for concealing a portion of the building structure. A method of installing an aesthetic cover assembly is also included.

Abstract: An offshore power generation structure comprising a submerged portion having a first deck portion comprising an integral multi-stage evaporator system, a second deck portion comprising an integral multi-stage condensing system, a third deck portion housing power generation equipment, cold water pipe; and a cold water pipe connection.

Abstract: A method of producing an umbilical includes providing an elongate flat metal strip, providing an elongate service carrier, encasing the service carrier in an insulation that is strain tolerant and high temperature tolerant, forming the metal strip into a tube shape around the insulated service carrier, and thereafter welding the edges of the metal strip to form a tube surrounding the insulated service carrier. The method may further comprise coiling the umbilical onto a spool. Such an umbilical may be useful for carrying fluids, power, control signals, or the like into a well.

Abstract: An apparatus for conveying fluids is provided which includes a plurality of segments, such as preferably ceramic segments, including a first segment and a last segment and an inner lining. Each of the plurality of segments may have a central opening, a periphery surrounding the central opening, a substantially concave top surface surrounding the central opening, and a substantially convex bottom surface surrounding the central opening. The plurality of segments may be configured so that the substantially convex bottom surface of each segment of the plurality of segments, except for the last segment, sits on the substantially concave top surface of an adjacent segment of the plurality of segments. The plurality of segments are configured so that fluids can pass through the central openings of the plurality of segments. The inner lining surrounds the periphery of each of the plurality of segments.

Abstract: A wind turbine tower, includes a first substantially tubular wall section having a tapered edge; a second substantially tubular wall section, arranged substantially coplanar with the first wall section, having a flared edge for seating against the tapered edge of the first wall section; and at least one fastener for securing the tapered edge of the first wall section to the flared edge of the second wall section. The at least one fastener includes a bolt extending through the tapered edge and the flared edge, and the bolt is arranged substantially perpendicular to a longitudinal axis of the first and second wall sections.

Abstract: A flexible cryogenic transfer hose for connecting two cryogenic facilities, has a length of at least 20 m, and: an inner flexible hose with at least two segments, interconnected via at least two transverse inner connecting members, an outer hose surrounding the inner hose and including a watertight elastomeric or composite material, the outer hose having at least two segments mutually connected via two outer connecting members, the outer hose having a wall thickness of at least 2 cm, a bend radius of at least 2 m, and an internal diameter of at least 20 cm, the inner hose being kept at a distance from the outer hose via spacer elements bridging a distance between the outer wall of the inner hose and an inner wall of the outer hose, which distance is between 0.1 and 0.8 times the internal diameter dio of the inner hose.

Abstract: A strip-connecting type spiral tube is configured so that strip members serving as segments are connected to each other. The strip-connecting type spiral tube for pressure-supporting and easy pull-out has a new-type connection structure of strip members, which allow easy and convenient pull-out of strip members adjacently connected and prevents an arrangement of strip members from collapsing due to an external pressure.

Abstract: Provided is an in-tank tube excellent in pressure-resisting performance. The in-tank tube is an in-tank tube (1) for an automotive fuel of a monolayer structure, the in-tank tube (1) for an automotive fuel being installed in a fuel tank (2) and having a construction that absorbs displacement of the fuel tank (2) and vibration of a fuel pump (5). Further, the in-tank tube (1) for an automotive fuel is formed into a monolayer structure formed of a resin material using an aliphatic polyamide resin as a main component, and has the following pressure-resisting characteristic (X): (X) when silicone oil is charged as a pressurizing medium into the in-tank tube immersed in a test liquid (Fuel C:methanol=85:15 (volume basis)) at 80° C. for 168 hours, both ends of the in-tank tube are each blocked with a test pipe, and a pressure test is performed at a rate of pressure increase of 1.0 MPa/min and room temperature, a pressure (burst pressure) at which the in-tank tube bursts or the test pipe disconnects is 2.

Abstract: A large scale structure includes a plurality of panels, wherein each panel has at least one opening therethrough. And each panel has opposed edge profiles that are positionable next to adjacent panels and opposed end profiles that are positionable next to adjacent panels. A plurality of rods extend through aligned openings so as to interconnect the plurality of panels to one another. And a plurality of coupling nuts, each coupling nut attachable to an end of one of the rods, wherein the coupling nuts secure the panels to one another. An insert with apertures aligned with the openings allows a rod to extend through the insert and facilitate securement of the insert to the plurality of panels so as to form a section. Additional sections can be assembled as needed to form the structure. A method of assembling the structure is also disclosed.

Abstract: The invention describes easily attachable and detachable joints for use in pipe systems carrying pressured fluids. The pipes used for the purpose are made using thermoplastics, preferably polyolefin and provided with integrally formed male spigot end (1) and a female socket end (2). The invention also discloses a method of forming tubes along with their male spigot (1) and the female sockets (2). Joints made using the pipes provided with integral male (1) and female ends (2) are constructed using a push-fit principle. A sealing ring (10) is inserted in the sealing groove (3) of the female socket (2), making the joint leak proof. Plastic or metal clamps (6) are provided to sustain the longitudinal forces imposed on the joint exerted by the pressured fluid. The male spigot (1) is provided with an integrally formed collar (4) that serves as the holding surface to clamp resisting longitudinal forces. The joint is simple in its construction, easy to assemble in field, robust and cost effective.

Abstract: An in-line treble port venturi connector provides a low flow, low pressure inlet port for drawing supplemental fluid into a main flow path. The connector includes a main flow tube having a mixing channel restricting flow and lowering pressure between an upstream port and a downstream port. A baffle projects into the main flow tube from the inner surface of the mixing channel at a location upstream of an inlet port, obstructing main flow to create a separation zone in the low pressure area, causing rotational flow within the separation zone and lowering the average flow rate in the direction of main flow. A pressure differential allows supplemental fluid to be drawn into the mixing channel through the inlet port. The connector may be used to introduce hydrogen or oxygen gas from an on-board generator into a main flow of hydrocarbon fuel in the intake manifold of an internal combustion engine.

Abstract: Disconnectable connector assemblies, sets including the assemblies, and methods of using the assemblies, are disclosed.

Abstract: The pipe has a non-circular cross section that generally looks like that of a squashed circle. The pipe would not deform significantly from that having the squashed circle cross section under the condition in which the inside pressure is the same or less than that of the internal pressure of the pipe that carries ordinary cold tap water. The cross section of the pipe gets deformed to become rounder and larger when the water within the pipe is frozen, and the rounder and larger cross section is large enough for the pipe to contain the frozen water or ice without having any damages. The pipe is made of material such as high carbon content steel that allows the pipe to change its shape back to the pre-frozen shape as the water inside is thawed out.

Abstract: An anticorrosion sleeve including a resin sleeve and a metal sleeve tightly received in the resin sleeve. The metal sleeve has a gradually expanding outer diameter thereof toward one circular edge thereof in a tapered shape in cross section so that the metal sleeve expands the resin sleeve in diameter when the metal sleeve is inserted into the resin sleeve. The resin sleeve includes a large-diameter portion and a small-diameter portion. The metal sleeve includes an engagement end portion, an intermediate portion, and a tapered end portion in that order. The outer circumference of the engagement end portion of the metal sleeve is engaged beforehand with a step between the inner circumferences of the large-diameter portion and the small-diameter portion of the resin sleeve.

Abstract: A system and method for monitoring and/or detecting the flow of one or more fluids in a fluid system including leak detection system integral to the fluid system (e.g., at any point along a conduit, at a connection between conduits such as at a fitting assembly, etc.) configured to detect incipient, early stage levels of the leak. Based on one or more factors related to the fluid and/or the leak, the methods, devices, and systems disclosed herein can provide an indication of a suitable action or process in response to the fluid or the leak including performing preventative maintenance or providing an indication of the need of maintenance in response to the leak.

Abstract: A foldable extension pipe is provided which consists of upper and lower pipe sections which are folded and unfolded. The operation input from the upper side is transmitted towards the lower side by means of the transmission rods of the upper and lower pipe sections being magnetic-coupled by first and second magnetic couplings. The measuring wheel unit and the spraying wheel unit having the foldable extension pipe are carried or stored with ease, and when a user inputs an operation via the upper portion of the extension pipe, particularly the operation input portion such as an operation lever at the grip portion of the upper portion, the operation output portion manipulates the reset switch of the counter, manipulates the nozzle section of the spray can for spraying paint, or brakes the rotary wheel.

Abstract: An offshore power generation structure comprising a submerged portion having heat exchange sections, power generation sections, a cold water pipe and a cold water pipe connection. The cold water pipe comprises a plurality of offset first and second staved portions.