摘要:
A method for manufacturing high speed pressure compensator-type drip irrigation tubes and the tubes obtained thereby having absolute radial orientation of molecular chains, the orientation imparting strength as well as flexibility to the tube material. The said method comprises extruding a tube using a plurality of extruders; blowing up the extruded tube by introducing a pressure inside the tube relatively higher than the pressure outside the tube; drawing the blown tube simultaneously to the blowing of tube; flattening the blown tube by heat welding the collapsed halves together and forming a tape immediately, subsequent to the process of blowing and drawing the tube; extrusion of a bonding polymer on one border of the tape; printing flow channels into the hot and viscous bonding polymer; and forming a tube by lengthwise folding the tape and heat welding the overlapping borders together using the bonding polymer.
摘要:
A contiguous duct assembly has first and second ducts that share at least one common wall element. An expansion joint is formed at the end of the contiguous duct assembly using a connector element that extends with respective portions into the internal spaces of the first and second ducts. First and second expansion fabrics are coupled to the respective portions from the inside of the ducts using fasteners that are accessible from and disposed within the internal space of the first and second ducts.
摘要:
The present subject matter provides a drain line adapter. The drain line adapter includes at least two conduits. The two conduits can be oriented or positioned relative to one another in order to facilitate drainage of the drain line adapter. The two conduits can also be oriented or positioned relative to one another in order to hinder clogging of the drain line assembly.
摘要:
A pipe system comprises a metallic pipe section having a wall comprising a metal material, and a deformation absorber coupled to the first pipe section in end-to-end relation. The deformation absorber comprises a composite pipe section having a wall comprising a composite material formed of at least a matrix and a plurality of reinforcing fibres embedded within the matrix. The composite pipe section is configured to sustain a greater level of strain than the metallic pipe section when the pipe system is subject to deformation by a load event.
摘要:
Disclosed is a pressure damping device for a brake system. The pressure damping device is installed at the brake system having a hydraulic block provided with a first hydraulic circuit to control transfer of fluid pressures generated by a first port of a master cylinder and discharged from a first pump to a first wheel, and a second hydraulic circuit to control transfer of fluid pressures generated by a second port of the master cylinder and discharged from a second pump to a second wheel, and the hydraulic block includes a bore connecting the master cylinder with discharge outlets of the first and second pumps and formed between first and second main oil paths to communicate with the first and second main oil paths, and a pressure damping unit provided in the bore and having a volume changed according to the fluid pressures from the first and second pumps.
摘要:
According to an embodiment, a gas delivery device for a fuel cell system includes a hollow ceramic element comprising a dielectric material having at least one groove in one end face of the ceramic element and a first metal tube, wherein an end of the first metal tube is inserted into the groove of the hollow ceramic element. According to an embodiment, a fuel cell system includes a fuel cell stack or column, a gas delivery line fluidly connected to the stack or column, and a coefficient of thermal expansion compensator/isolator located in the gas delivery line, where the coefficient of thermal expansion compensator/isolator includes a hollow ceramic element made of a dielectric material having at least one groove in one end face of the ceramic element, a first metal tube, where an end of the first metal tube is inserted into the groove of the hollow ceramic element, and a hollow flexible element which compensates for differences in coefficients of thermal expansion between components of the fuel cell system.
摘要:
A method for manufacturing high speed pressure compensator-type drip irrigation tubes and the tubes obtained thereby having absolute radial orientation of molecular chains, the orientation imparting strength as well as flexibility to the tube material. The said method comprises extruding a tube using a plurality of extruders; blowing up the extruded tube by introducing a pressure inside the tube relatively higher than the pressure outside the tube; drawing the blown tube simultaneously to the blowing of tube; flattening the blown tube by heat welding the collapsed halves together and forming a tape immediately, subsequent to the process of blowing and drawing the tube; extrusion of a bonding polymer on one border of the tape; printing flow channels into the hot and viscous bonding polymer; and forming a tube by lengthwise folding the tape and heat welding the overlapping borders together using the bonding polymer.
摘要:
A security splicing system of aligned pipes against an expansion and/or contraction thereof due to variations in temperatures, has a flange unit providing a stability and watertightness of a splice, and including a double flange with two identical fastening elements gripping an outer face of an end area of two previously spliced pipes with a watertight connecting flange, so that an accidental displacement of the watertight connecting flange is prevented in an event that dimensions of the end area of the pipes vary due to an expansion or contraction.
摘要:
A flexible pipe joint apparatus for use in a fluid (e.g., water) transport pipe system for maximally absorbing an external force such as a compression or tensile force applied to a pipe of the fluid transport system due to an earthquake, differential settlement, thermal expansion or contraction of the pipe per se, thus preventing resultant damage at a weak portion of the pipe. The apparatus includes a receiving tubular member and an inserting tubular member insertable into and connectable with the receiving tubular member along a tube axial direction. A stopper portion is formed in an outer peripheral face of the inserting tubular member, the stopper portion projecting radially outward from the outer peripheral face. A retaining portion is formed in an inner peripheral face of the receiving tubular member, the retaining portion coming into contact with the stopper portion of the inserting tubular member so as to prevent slidable displacement between the two tubular members at least on a withdrawal side in a predetermined relative slidable range of the tubular members. The stopper portion includes a plurality of projections formed at a plurality of positions along a periphery of the inserting tubular member. The retaining portion of the receiving tubular member includes a plurality of detaching recesses, each said recess allowing passage of each of the projections axially relative to the detaching recess only when the receiving tubular member and the inserting tubular member are located in a predetermined phase relationship with each other.
摘要:
Method and apparatus for pneumatically transporting solid and abrasive particulate materials at high temperature, by means of a carrier gas through a plurality of co-axial straight pipes. The pipes are maintained under constant tension by applying a force across at least one expansion joint coupling said pipes in order to maintain said pipes straight against the forces acting on said pipes which tend to cause bending and deformation thereof, as for example: thermal elongation, the weight of the solids conveyed through said pipes, the friction forces between said pipes and its supporting frame, and the pressure of the carrier gas inside said pipes. The constant tensioning force may be applied for example, by means of hydraulic cylinders in combination with a telescopic water-cooled sleeve.