Energy consumption of a temperature control unit can be reduced. A flexible pipe 13 includes a bellows pipe 130 made of a metal and an inner tube 131. The inner tube 131 is provided at an inner side of the bellows pipe 130, and an inner surface of the inner tube where a fluid flows is smooth. The inner surface of the inner tube 131 where the fluid flows may be smoother than a surface of a braided body. Further, the inner tube 131 may be made of, for example, a conductive material. An inner side of the inner tube 131 where the fluid flows may be coated with a conductive film.

Energy consumption of a temperature control unit can be reduced. A flexible pipe 13 includes a bellows pipe 130 made of a metal and an inner tube 131. The inner tube 131 is provided at an inner side of the bellows pipe 130, and an inner surface of the inner tube where a fluid flows is smooth. The inner surface of the inner tube 131 where the fluid flows may be smoother than a surface of a braided body. Further, the inner tube 131 may be made of, for example, a conductive material. An inner side of the inner tube 131 where the fluid flows may be coated with a conductive film.

A sealed joint assembly for transmitting high temperature and high pressure fluid between adjoining ducts in, for example, an aircraft bleed air system, includes a gimbal ring and two annular clevises. Each clevis includes a pair of axially-extending lobes that each includes a bore hole extending therethrough. The bore holes of the clevis lobes may each align with a respective bore hole formed within the gimbal ring, through which a pin may be inserted to couple the clevises to the gimbal ring. The clevises and gimbal ring may be formed using additive manufacturing, to produce component geometries and topologies that reduce the overall weight of the joint assembly while maintaining or improving its structural integrity. For example, the clevis lobes may include a plurality of gaps, such that the remaining material forms a shear web. The gimbal ring may also include strut or truss networks to enhance structural integrity.

A sealed joint assembly for transmitting high temperature and high pressure fluid between adjoining ducts in, for example, an aircraft bleed air system, includes a gimbal ring and two annular clevises. Each clevis includes a pair of axially-extending lobes that each includes a bore hole extending therethrough. The bore holes of the clevis lobes may each align with a respective bore hole formed within the gimbal ring, through which a pin may be inserted to couple the clevises to the gimbal ring. The clevises and gimbal ring may be formed using additive manufacturing, to produce component geometries and topologies that reduce the overall weight of the joint assembly while maintaining or improving its structural integrity. For example, the clevis lobes may include a plurality of gaps, such that the remaining material forms a shear web. The gimbal ring may also include strut or truss networks to enhance structural integrity.

A hose and rigid pipe connecting system used in a high pressure system comprises: a hose made up of connecting a core pipe and a corrugated pipe, the outer side of the corrugated pipe being wound and woven by metal wires; a rigid pipe; a transition joint connecting the hose and the rigid pipe; and a retaining ring buckled on the outer side of the hose and the transition joint. The invention has the advantages that the sealing performance between the hose and the rigid pipe can be greatly improved, and the problem that the connecting part of the hose and the rigid pipe can not bear pressure Or resist high and low temperatures is solved; besides, the axial tensile strength and sealing reliability are improved by winding and weaving metal wires on the outer side of the metal corrugated pipe and then welding with the core pipe.

A hose and rigid pipe connecting system used in a high pressure system comprises: a hose made up of connecting a core pipe and a corrugated pipe, the outer side of the corrugated pipe being wound and woven by metal wires; a rigid pipe; a transition joint connecting the hose and the rigid pipe; and a retaining ring buckled on the outer side of the hose and the transition joint. The invention has the advantages that the sealing performance between the hose and the rigid pipe can be greatly improved, and the problem that the connecting part of the hose and the rigid pipe can not bear pressure Or resist high and low temperatures is solved; besides, the axial tensile strength and sealing reliability are improved by winding and weaving metal wires on the outer side of the metal corrugated pipe and then welding with the core pipe.

An expansion pipe joint that absorbs displacement occurring at a connection portion between an upstream pipe and a downstream pipe includes an outer tube having a downstream end coupled to the downstream pipe, an inner tube that is inserted into the outer tube and has an upstream end coupled to the upstream pipe, and a closing member having elasticity that is provided between an upstream end of the outer tube and the upstream end of the inner tube so as to close a gap between them. Then, a difference between a position in an axial direction of the upstream end of the outer tube and a position in the axial direction of the upstream end of the inner tube is within a predetermined range so that a bus line of the closing member is inclined from the axial direction.

A power tool arrangement includes a frame having an outlet. A power tool is coupled to the frame and includes a movable working element configured to engage a work piece. A hose includes first and second opposite ends and a biasing device configured to bias the hose into a longitudinally compressed position. The first end is coupled to the outlet. The second end is coupled to the working element such that the second end follows the movement of the working element and the hose thereby moves between the longitudinally compressed position and a longitudinally expanded position.

A power tool arrangement includes a frame having an outlet. A power tool is coupled to the frame and includes a movable working element configured to engage a work piece. A hose includes first and second opposite ends and a biasing device configured to bias the hose into a longitudinally compressed position. The first end is coupled to the outlet. The second end is coupled to the working element such that the second end follows the movement of the working element and the hose thereby moves between the longitudinally compressed position and a longitudinally expanded position.

A flexible line segment for the exhaust system of an internal combustion engine, with an annularly corrugated or helically corrugated metallic bellows, for exhaust gas flow therethrough, and a line segment arranged upstream in reference to the metallic bellows, with a precipitation device provided in the line section, arranged upstream in reference to the metallic bellows or mounted thereat. The precipitation device is provided for urea derivatives or urea entrained in an edge layer of the exhaust gas flow from an oversaturated edge layer of the exhaust gas flow.