Section of two-layer hard pipeline and method of its manufacture (versions)

FIELD: construction.

SUBSTANCE: pipeline section comprises an outer pressure shell 1 made of a fiberglass material based on a reactive plastic binder and an inner containment shell 2 secured to it from a plurality of flat or cylindrical elements made of electrical porcelain that cover the inner surface of the outer shell and are fastened together at the ends and with a hardened casing reactoplastic binder. In the first embodiment, a forming base is formed from the planar elements by temporarily securing it on the process mandrel with a releasable adhesive. After that, the outer shell is manufactured by impregnating the fiberglass material with a reactive plastic binder and winding it onto the forming base. After the binder solidifies, the mandrel is separated. According to the second embodiment of the method, the shaping base is made of hollow cylindrical elements by their free arrangement on a cylindrical mandrel and axial compression. The following operations are the same as in the first version of the method.

EFFECT: simplification of the pipe manufacturing technology while providing a significant level of its strength and protection against destruction.

4 cl, 6 dwg

 



 

Same patents:

FIELD: machine building.

SUBSTANCE: multilayer pipe includes external 1 and internal 2 layers, between which intermediate layer 3 adjacent to external 1 and internal 2 layers through adhesive layers is located. External 1 and internal 2 layers are made from copolymer of polypropene, and intermediate layer 3 is made from copolymer of ethyl vinyl alcohol as base with pieces of fibres as filler.

EFFECT: effective gas insulation of multilayer pipe at simplification of its manufacturing technology owing to using only extrusion equipment and equipment for application of adhesive material between internal, intermediate and external layers, which allows achieving the cheapening of pipe manufacture, and its high operating properties allowing to minimise the pipe material consumption.

8 cl, 1 dwg

FIELD: construction.

SUBSTANCE: invention is related to construction and is used in construction and repair of pipelines. In method for manufacturing of spiral-wound pipes from thermoplastic with hollow wall of closed profile, including manufacturing of closed hollow profile in the form of pipe with rectangular cross section by method of continuous auger extrusion with further winding and extrusion welding of wound profiles between each other on cylindrical mandrel, extrusion welding of wound profiles between each other is carried out along whole height of rectangular profile, at the same time winding of hollow profiles is carried out with gap between each other by value, which does not exceed thickness of hollow profile wall.

EFFECT: development of efficient method for manufacturing and repair of pipelines.

6 cl, 3 dwg

Pipe // 2383809

FIELD: construction.

SUBSTANCE: invention is related to combined pipes from polymer materials. Pipe, comprising polymer, reinforcing and primer layers, is arranged with primer layer in the form of woven cellular material, which is partially inbuilt into polymer layer and produces common composite-fibrous material with reinforcing layer.

EFFECT: improved reliability.

2 cl, 1 dwg

Pipe // 2350819

FIELD: mechanics.

SUBSTANCE: proposed pipe comprises wall with inner polymer layer furnished with protective coating representing polyureas.

EFFECT: pipe longer life.

3 cl, 3 dwg

FIELD: mechanics.

SUBSTANCE: pipe incorporates load-bearing composite-material carcass and tip with circular stepwise flanges representing cylindrical ledges with radial circular grooves. The first layer of the aforesaid load-bearing carcass features the thickness equal to that of the first flange, while every following layer is a combined one with alternating lengthwise or a spiral and circular layers wherein the end of every lengthwise or spiral layer is laid into the radial groove and is secured by an additional circular layer with the thickness equal to the groove depth. The propose method of pipe production consisting in a layer-by-layer laying on to the mandrel of the reinforcing layers, wherein every lengthwise or spiral combined layer is laid so that the fibers extend the reinforcing carcass edges and are secured in the tip outer edges, comprises coiling an additional circular along with deforming the previous layer and cutting off excess fibers coiling the final layer with subsequent thermal treatment and withdrawal from the mandrel. The proposed invention allows obtaining rectilinear fibers and their minimum possible deformation in all bearing layers, layer-by-layer coupling and independent layer securing on the tips.

EFFECT: smaller pipe sizes, reduced wall thickness and higher strength and reliability.

7 cl, 12 dwg

Pipe // 2260736

FIELD: pipeline transport.

SUBSTANCE: pipe comprises fiberglass layer with electroconducting binder. The electroconducting binder is applied only on the outer side of the reinforced fiberglass layer.

EFFECT: enhanced reliability.

1 dwg

Pipe // 2258858

FIELD: rigid pipes.

SUBSTANCE: pipe comprises reinforced composition layer and protecting inner and outer polymeric layers. The composition layer is provided with through passages. The protecting polymeric layers are interconnected through passages.

EFFECT: enhanced reliability.

1 dwg

FIELD: pipes.

SUBSTANCE: connecting pipe is made of at least tree layers. The inner and intermediate layers are made of a polymeric material. The amorphous zones of partially crystal polymeric material of the inner layer which is in a contact with the fluid to be transported is provided with anticorrosion admixtures, which, in particular, protect the connecting pipe against oxidizing and reducing fluids. The amorphous zones of the polymeric material of the intermediate layer is provided with fillers and/or admixtures for decreasing diffusion of admixtures from the inner layer to the outer layer of the pipe.

EFFECT: enhanced strength.

11 cl, 2 dwg

Pipe // 2255265

FIELD: rigid pipes.

SUBSTANCE: pipe comprises thermoplastic shell with the locking collar and fiber glass layer which embraces it. The collar is made of an unclosed ring secured to the shell through a glue-melt. The pipe is provided with an additional device for securing the ring. The device which is made of a layer of adhesive belt which embraces the ring and shell sections which abuts against it.

EFFECT: enhanced reliability and simplified assembling.

1 dwg

Pipe // 2255264

FIELD: rigid pipes.

SUBSTANCE: pipe comprises polymeric sealing layer with the locking collar and reinforcing fiber glass layer. The collar is cylindrical and made of a layers of adhesive polymeric belt wound each other. The pipe is provided with rest rings interposed between the reinforcing layer and the face collars.

EFFECT: enhanced reliability.

1 dwg

Pipeline section // 2519528

FIELD: construction.

SUBSTANCE: invention relates to pipeline elements, which may be used in construction, communal services and in mining industry during transportation of polluted waste water, loose products and other liquids containing solid phase. The pipeline section comprises a body made of electric porcelain of group 100 according to GOST 20419-83 with glazed internal surface.

EFFECT: expanded arsenal of technical facilities.

8 cl, 1 dwg, 2 tbl

FIELD: chemical industry, in particular fiber-glass materials for polymeric glass composites.

SUBSTANCE: claimed reinforcing weave filler for polymeric glass composites contains glass fiber comprising (mass %): silica 50-99; alumina 1-20; calcium oxide 0-15; magnesium oxide 0-15; sodium oxide 0-20; boron oxide 0-15; silanole group of formula SiO(OH)2, formed in glass fiber surface layer during chemical treatment process. Fiber-glass reinforcing weave filler has specific surface of 2-50 m2/g, and surface layer of elementary fiber, wherein silanole groups are concentrated, has a depth 0.001-0.01 parts of fiber diameter.

EFFECT: composite with improved physico-mechanical properties, in particular bending strength, interlaminar strength, and water resistance.

FIELD: chemical industry, in particular fiber-glass materials for polymeric glass composites.

SUBSTANCE: claimed reinforcing weave filler for polymeric glass composites contains glass fiber comprising (mass %): silica 50-99; alumina 1-20; calcium oxide 0-15; magnesium oxide 0-15; sodium oxide 0-20; boron oxide 0-15; silanole group of formula SiO(OH)2, formed in glass fiber surface layer during chemical treatment process. Fiber-glass reinforcing weave filler has specific surface of 2-50 m2/g, and surface layer of elementary fiber, wherein silanole groups are concentrated, has a depth 0.001-0.01 parts of fiber diameter.

EFFECT: composite with improved physico-mechanical properties, in particular bending strength, interlaminar strength, and water resistance.

Pipeline section // 2519528

FIELD: construction.

SUBSTANCE: invention relates to pipeline elements, which may be used in construction, communal services and in mining industry during transportation of polluted waste water, loose products and other liquids containing solid phase. The pipeline section comprises a body made of electric porcelain of group 100 according to GOST 20419-83 with glazed internal surface.

EFFECT: expanded arsenal of technical facilities.

8 cl, 1 dwg, 2 tbl

FIELD: construction.

SUBSTANCE: pipeline section comprises an outer pressure shell 1 made of a fiberglass material based on a reactive plastic binder and an inner containment shell 2 secured to it from a plurality of flat or cylindrical elements made of electrical porcelain that cover the inner surface of the outer shell and are fastened together at the ends and with a hardened casing reactoplastic binder. In the first embodiment, a forming base is formed from the planar elements by temporarily securing it on the process mandrel with a releasable adhesive. After that, the outer shell is manufactured by impregnating the fiberglass material with a reactive plastic binder and winding it onto the forming base. After the binder solidifies, the mandrel is separated. According to the second embodiment of the method, the shaping base is made of hollow cylindrical elements by their free arrangement on a cylindrical mandrel and axial compression. The following operations are the same as in the first version of the method.

EFFECT: simplification of the pipe manufacturing technology while providing a significant level of its strength and protection against destruction.

4 cl, 6 dwg

Pipe // 2255263

FIELD: connecting arrangements or fittings.

SUBSTANCE: pipe comprises thermoplastic shell provided with locking collar and fiber glass layer which embraces it. The shell is provided with the second locking collar. The collars are provided with conical face surfaces and arranged in the vicinity of the pipe ends.

EFFECT: enhanced reliability.

1 dwg

Pipe // 2255264

FIELD: rigid pipes.

SUBSTANCE: pipe comprises polymeric sealing layer with the locking collar and reinforcing fiber glass layer. The collar is cylindrical and made of a layers of adhesive polymeric belt wound each other. The pipe is provided with rest rings interposed between the reinforcing layer and the face collars.

EFFECT: enhanced reliability.

1 dwg

Pipe // 2255265

FIELD: rigid pipes.

SUBSTANCE: pipe comprises thermoplastic shell with the locking collar and fiber glass layer which embraces it. The collar is made of an unclosed ring secured to the shell through a glue-melt. The pipe is provided with an additional device for securing the ring. The device which is made of a layer of adhesive belt which embraces the ring and shell sections which abuts against it.

EFFECT: enhanced reliability and simplified assembling.

1 dwg

FIELD: pipes.

SUBSTANCE: connecting pipe is made of at least tree layers. The inner and intermediate layers are made of a polymeric material. The amorphous zones of partially crystal polymeric material of the inner layer which is in a contact with the fluid to be transported is provided with anticorrosion admixtures, which, in particular, protect the connecting pipe against oxidizing and reducing fluids. The amorphous zones of the polymeric material of the intermediate layer is provided with fillers and/or admixtures for decreasing diffusion of admixtures from the inner layer to the outer layer of the pipe.

EFFECT: enhanced strength.

11 cl, 2 dwg

Pipe // 2258858

FIELD: rigid pipes.

SUBSTANCE: pipe comprises reinforced composition layer and protecting inner and outer polymeric layers. The composition layer is provided with through passages. The protecting polymeric layers are interconnected through passages.

EFFECT: enhanced reliability.

1 dwg

Pipe // 2260736

FIELD: pipeline transport.

SUBSTANCE: pipe comprises fiberglass layer with electroconducting binder. The electroconducting binder is applied only on the outer side of the reinforced fiberglass layer.

EFFECT: enhanced reliability.

1 dwg

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