CN2074409U

CN2074409U - Steel-plastics pipeline components lined inside and covered outside with plastics

Info

Publication number: CN2074409U
Application number: CN 90207494
Authority: CN
Inventors: 钱学成; 秦加兵
Original assignee: RUDONG COUNTY CHEMICAL ANTICOR
Current assignee: RUDONG COUNTY CHEMICAL ANTICOR
Priority date: 1990-08-04
Filing date: 1990-08-04
Publication date: 1991-04-03

Abstract

The utility model discloses a steel-plastic composite pipeline component lined inside and covered outside with plastic, which is anticorrosion pipeline equipment. The thickness of the outer covering layer of the composite pipeline component is even. The utility model has the advantages of non-foam, non-peeling or cracking, non-head fall, non-fold or edge lifting, good mechanical strength, and non-damage. An antiseptic function is offered for either the pipeline for conveying media or the external environment of the pipeline. The steel-plastic composite pipeline component lined inside and covered outside with plastic is helpful to enhance the antiseptic effect of the pipeline and prolong the service life of the pipeline. The utility model is characterized in that plastic is respectively lined inside and is covered outside the pipeline component. The selection of the plastic lined inside and covered outside is determined according to the requirement of anticorrosion.

Description

Steel-plastics pipeline components lined inside and covered outside with plastics

Liner encased steel composite metal plastic pipe parts are a kind of anti-corrosion pipeline equipment.

The outside surface anticorrosion of existing anti-corrosion pipeline parts twines outside pipeline in the coating of conduit component outer surface or with glass yarn, glass fibre cloth mostly, and coat pitch or resin, easily produce the coating thickness inequality, bubble and peel off, chap with non-metal powder or emulsion coating in the metallic conduit member outer surface, mechanical strength is relatively poor, and is fragile; Twine outside metallic conduit with glass yarn or glass fibre cloth, and pitching or resin, relatively poor with the pipeline external surface cohesive force sometimes, easily turn around, crape folding, alice, influence antiseptic effect and pipeline working life.

The purpose of this utility model is: a kind of composite metal plastic pipe parts that liner outsourcing plastics are arranged are provided, the surrounding layer thickness of this multiple tube parts is more even, non-foaming, peel off, chap, do not turn around, crape folding and alice, mechanical strength is good, not fragile, favorable anti-corrosion effect, working life is longer.

Specific embodiments of the present utility model is: with seamless steel pipe, steel elbow, steel threeway and steel four-way is matrix, through mechanical cold-drawn processing, at seamless steel pipe wall inner lining plastic tube, be lined with the seamless steel pipe outsourcing plastic tube of plastic tube again in pipe with expressing technique, formation is moulded, steel is moulded the steel-plastic composite pipe that liner outsourcing plastic tube is arranged that three layers of tube wall closely are integrated; At steel elbow plastic lining elbow, the steel elbow outsourcing plastic elbow of plastic lining elbow is arranged, form and to mould, steel, to mould three and laminatedly be the elbow of one; In the threeway of steel threeway plastic lining,, form and to mould, steel, to mould three and laminatedly be the threeway of one at the steel threeway outsourcing plastic three-way of plastic lining threeway; At steel four-way plastic lining four-way, steel four-way outsourcing plastics four-way at the plastic lining four-way, formation is moulded, steel, mould three and laminatedly be the four-way of one, the outsourcing plastics of seamless steel pipe, steel elbow, steel threeway, steel four-way are epoxy resin or PVC or polypropylene or polyvinylfluoride or polyethylene, select the outsourcing plastics for use according to requirement for anticorrosion.

Further specify below in conjunction with embodiment and accompanying drawing:

Fig. 1: liner encased steel plastic composite diagrammatic sketch (this figure make an abstract accompanying drawing).

Fig. 2: the liner encased steel is moulded the composite elbow diagrammatic sketch.

Fig. 3: the liner encased steel is moulded compound threeway diagrammatic sketch.

Fig. 4: the liner encased steel is moulded compound four-way diagrammatic sketch.

Among the figure: 1, inner lining plastic tube, 2, seamless steel pipe, 3, the outsourcing plastic tube, 4, screw, 5, the outsourcing plastic elbow, 6, the steel elbow, 7, plastic lining elbow, 8, non-metallic gasket, 9, flange, 10, flange hole, 11, the outsourcing plastic three-way, 12, the steel threeway, 13, plastic lining threeway, 14, screw, 15, screw, 16, outsourcing plastics four-way, 17, the steel four-way, 18, the plastic lining four-way.

Liner outsourcing plastic composite pipe (see figure 1), with seamless steel pipe 2 is matrix, through mechanical cold-drawn processing, inner lining plastic tube 1 and seamless steel pipe 2 closely are combined into the plastic-lined steel plastic composite, be matrix with the plastic-lined steel composite pipe again, adopt the expressing technique secondary operations, outsourcing plastic tube 3 is closely wrapped in outside the tube wall of seamless steel pipe 2, become and mould, steel, mould the steel-plastic composite pipe that liner outsourcing plastic tube is arranged that three layers of tube wall closely are integrated, there are internal thread or outside thread in the seamless steel pipe end at liner encased steel plastic composite two ends, is used for and steel-plastic composite pipe, elbow, being connected of threeway and four-way.

The liner encased steel is moulded the composite elbow (see figure 2), with steel elbow 6 is matrix, at its appearance bread one outsourcing plastic elbow 5, again at plastic lining elbow 7 of steel elbow 6 liners, formation is moulded, steel, mould three layers of steel that the liner outsourcing is arranged that closely is integrated and mould composite elbow, there is the outside thread that is complementary with flange 9 internal threads at steel elbow 6 two ends of moulding composite elbow in the liner encased steel, and flange 9 is screwed in respectively on the two ends outside thread of steel elbow 6, and non-metallic gasket 8 is bonding with plastic lining elbow two ends.

The liner encased steel is moulded compound threeway (see figure 3), with steel threeway 12 is matrix, in plastic lining threeway 13 of steel threeway 12 liners, again at outsourcing plastic three-way 11 of these steel threeway 12 outsourcings, become and mould, steel, mould three layers of steel that the liner outsourcing is arranged that closely is integrated and mould compound threeway, all there is the outside thread that is complementary with flange 9 internal threads three ends of moulding the steel threeway 12 of compound threeway in the liner encased steel, flange 9 is screwed in respectively on the outside thread of three ends of steel threeway 12, and non-metallic gasket 8 is bonding with three ends of plastic lining threeway respectively.

The liner encased steel is moulded compound four-way (see figure 4), with steel four-way 17 is matrix, at plastic lining four-way 18 of steel four-way 17 liners, again at outsourcing plastics of these steel four-way 17 outsourcings four-way 16, formation is moulded, steel, mould three layers of steel that the liner outsourcing is arranged that closely is integrated and mould compound four-way, all there is the outside thread that is complementary with flange 9 internal threads four ends of moulding the steel four-way 17 of compound four-way in the liner encased steel, flange 9 is screwed in respectively on the outside thread of four ends of steel four-way 17, and non-metallic gasket 8 is bonding with four ends of plastic lining four-way respectively.

Research, test show, the pipeline that adopts liner encased steel composite metal plastic pipe parts to be formed by connecting not only has antisepsis preferably to fed sheet of a media in the pipeline, and the environment of pipeline outside is also had antisepsis preferably, improve the pipeline corrosion protection effect, prolonged the working life of pipeline.

Claims

1, liner encased steel composite metal plastic pipe parts are with seamless steel pipe, the steel elbow, steel threeway and steel four-way are matrix, in the seamless steel pipe wall, be lined with plastic tube, in the steel elbow, be lined with plastic elbow, in the steel threeway, be lined with plastic three-way, in the steel four-way, be lined with the plastics four-way, it is characterized in that: in pipe, be lined with outside the seamless steel pipe of plastic tube and be surrounded by plastic tube, formation is moulded, steel is moulded the steel-plastic composite pipe that liner outsourcing plastic tube is arranged that three layers of tube wall closely are integrated, outside the steel elbow of plastic lining elbow, be surrounded by plastic elbow, outside the steel threeway of plastic lining threeway, be surrounded by plastic three-way, outside the steel four-way of plastic lining four-way, be surrounded by the plastics four-way.

2, according to the described liner encased steel of claim 1 composite metal plastic pipe parts, it is characterized in that: the outsourcing plastics of seamless steel pipe, steel elbow, steel threeway and steel four-way are epoxy resin or PVC or polypropylene or polyvinylfluoride or polyethylene.