Patent EA-016946-B1 (EA)
Title: Set of items for heat- and hydro-insulated pipeline and procedure for fabricating a set of heat- and hydro-insulated pipe connections
Inventor: EHNTONI KOSTA
IPC: B29C44/24
Filed: 2008-06-18
Abstract: The invention relates to machine building, in particular to procedures of fabricating connections and also to designs of heat- and hydro-insulated transfers used for connecting pipes of different diameters as well as for connecting branching with simultaneous transfer from one pipeline diameter to another for use in transporting liquid mediums in hot and/or cold water supply systems. Procedure for fabricating set of heat-hydro-insulated pipe transfers consists in connecting transfer pipe connections with different diameter branches of working pipe for each pipe sub. Heat- and hydro-insulated pipe transfers are fabricated separately in the form of a pipe-casing - rotating cylindrical body or of a composed structure the hydro-insulation is centered with the connection of working pipes, and a heat-insulation layer is poured. A set of pipe connections is fabricated within the range of values of diameters of working pipe branches of smaller diameter from 25 to 230 mm and selectively correlating to them in ranges of diameters of working pipe branches with bigger diameters from 35 to 435 mm, creating from 2 to 10 combinations with conditionally similar by shape to working pipe of lesser diameter, wherein for pipe transfer with connections of working pipe of greater diameter from 45 to 60 mm a pipe connection is fabricated using circular cylindrical hydro insulation with permanent, at least, outer diameter for the whole length of heat-insulated connection and providing volume protection of the working pipe with heat-insulating material at least heat-insulated part with specific volume of heat-insulation of the latter related to a unit of payload volume of a conditional running metre of a corresponding connection not less than 4.0. The complete set of items for the heat-insulation pipeline includes items each containing a working pipe or branches of a working pipe, a layer of heat-insulation and external hydro-insulation, further including a set of pipe connections fabricated according to the above described procedure, wherein each connection contains a transfer of working pipes with hydro-insulation in the form of pipe casing rotating cylindrical body or of a composed structure, exceeding relative diameters of said working pipe connection by the thickness required and sufficient to a protective layer of heat-insulation arranged underneath having the calculated density not less than 60 kg/min the middle of the layer and provided with wires of the on-line remote control system. The technical result reached by the proposed invention facilitates versatility, process simplicity and efficiency of items production design of which using them in pipelines for transporting liquid mediums in systems of hot and/or cold water supply, in particular in connecting pipelines of different diameter and in connecting pipelines of different diameter with branches ensures reduced heat losses and increased reliability of pipeline operation in whole.