RU2502007C1 - Method to manufacture pipeline of large diameter - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: rolled flexible plastic pipes of smaller diameter are transported to a place of laying, which are then unfolded from rolls and pulled in parallel to each other in the place of pipeline laying into a trench or along the earth surface. The quantity of pipes is selected so that the total cross section of smaller diameter pipe area sum is equal or exceeded the area of the cross section of the pipe of larger diameter required in accordance with throughput capacity. Then pipes are cemented or concreted together in the form of a pipe of larger diameter.

EFFECT: simplified transportation, manufacturing and installation of pipes of larger diameter, reduced costs.

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Description

A method of manufacturing a large diameter pipeline relates to a section of class B65 - transportation through pipes B65G 51/00 and is intended for the transfer of liquids (household water) or gases (domestic gas) to a distance.

It is well known that the transfer of large amounts of gas, oil and water over long distances is carried out using pipes of large diameter, usually buried underground. But the production, and especially the transportation of such pipes and their burial, is very, very difficult, and therefore expensive.

A known method of production of pipes (RF Patent No. 2464325, IPC C21D 9/10 (2006.01), op.20.10.2012). The method includes the deformation and heat treatment of pipes of intermediate sizes, as well as the deformation of the pipes to the finished size and the final heat treatment, dressing and grinding of the pipes.

A known method of manufacturing pipes (RF Patent No. 2466323, IPC F16L 9/12 (2006.01), op.10.11.2012). When implementing the method, a composite fiber material with a binder material is wound on a mandrel with the formation of four-way through channels in the wall and the arrangement of their diagonals along helical lines. After that, the fibrous material is wound with a binder material and polymerization is carried out.

A known prototype in the form of a method for the production of large diameter pipes (RF Patent No. 2460601, IPC VC 37/08 (2006.01), op.10.09.2012). A package of two rectangular plates welded along the edges with a continuous longitudinal seam is rolled on hot rolling mills. From the roll, pipes with longitudinal ribs are obtained, sections of the ribs are heated and they are deformed together with welds.

The possibility of obtaining essentially continuous pipes with a diameter of up to 3200 mm due to repeated deformation of the welds is ensured by the fact that plastic deformation is carried out until the metal of the ribs and welds is completely in contact with the surface of the shaped mandrel.

After another deformation, the pipe with longitudinal ribs is moved along the mandrel. The mandrel has a cross section in the form of a circle bounded by a circle with a radius equal to the radius of the inner surface of the produced pipe.

The disadvantages of the method include the fact that the production of large-diameter pipes, their transportation to the place of construction of the pipeline and instillation are complex and cumbersome, and therefore unnecessarily expensive.

A patented new method for manufacturing a large diameter pipeline also consists in the production of large diameter pipes, transportation and laying of the pipeline at its location.

But new in the method is that flexible plastic pipes of smaller diameter, rolled up into rolls, are transported to the place of laying the pipeline, which are then deployed from the rolls and pulled parallel to each other at the place of laying the pipeline in the earth's trench or on the earth's surface. Moreover, in an amount having a total cross-section by the sum of the areas of pipes of smaller diameter equal to or greater than the cross-sectional area of the pipe required for large diameter pipes. And then cement or concrete them together in the form of a pipe of large diameter.

The technical result of the new method is to simplify both transportation and the manufacture of large diameter pipes, as well as placing them in the ground, which means that cheaper processes are compared with the prototype.

The figure shows a block diagram of the manufacture of a large diameter pipeline. It includes the manufacture of 1 flexible plastic pipes at the manufacturing plant, their folding 2 into rolls, transportation of 3 smaller flexible plastic pipes twisted into rolls, then unwrapping them 4 at the destination from the rolls and pulling 5 parallel to each other at the location of the pipeline .

Moreover, in an amount having a total cross-section by the sum of the areas of pipes of smaller diameter equal to or greater than the cross-sectional area of the pipe required for large diameter pipes.

And then they fix 6 along the surface or lower 7 into a trench, cement or concrete them 8 together in the form of a pipe of large diameter and bury it in the ground 9.

Obviously, industrial applicability is feasible because the manufacture, transportation and deployment of flexible plastic pipes rolled into rolls at the manufacturing plant, as well as their concreting, are much simpler than the manufacture, transportation and instillation of large-diameter pipes, which also have large and inconvenient long pipes for these processes.

Claims (1)

A method of manufacturing a large diameter pipeline, which consists in the production of large diameter pipes, transportation and laying of the pipeline at its location, characterized in that flexible plastic pipes of smaller diameter, which are then rolled out from rolls and pulled parallel to each other, are transported to the place of laying the pipeline at the place of laying the pipeline in the earth’s trench or on the earth’s surface, and in an amount having a total cross-section by the sum of the areas of pipes of smaller diameter, equal th or exceeding the cross-sectional area of the required throughput pipe of large diameter, and then cement or concrete them together in the form of a pipe of large diameter.