CN1093151A

CN1093151A - Double-layer insulating plastic pipe pipe (road)

Info

Publication number: CN1093151A
Application number: CN 93110371
Authority: CN
Inventors: 郑金安
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-02
Filing date: 1993-04-02
Publication date: 1994-10-05

Abstract

A kind of plastic tube (road) that relates to double-layer heat insulation is particularly suitable for carrying the fluid that needs insulation.It is made of inside and outside two layers of plastic pipe, between the sealed annular space that keeps certain intervals is arranged.This annular space can be filled with air or carbon dioxide, can is vacuum by pumping also, can apply one deck reflector layer on the inside and outside tube wall of annular space.This double layer heat preservation pipe (road) has easy to make, in light weight, insulating efficiency height, advantage such as site operation is convenient, and is anticorrosive, of many uses, and cost is low.

Description

Double-layer insulating plastic pipe pipe (road)

The present invention relates to the plastic tube (road) of a kind of plastic tube (road), especially double-layer heat insulation.It is suitable for carrying the fluid (as oil, gas, water, heat transport fluid or other chemical industry liquid gas) that needs insulation.

The pipeline of existing conveyance fluid (as oil, gas, water, heat transport fluid etc.) is to adopt common iron and steel pipe, stoneware pipe, cement pipe, also useful plastic tube or Glass Steel Tube.The temperature of conveyance fluid in order to guarantee will add the bundle thermal insulation layer to the pipeline outside in the construction at the scene.This practice has played the effect of insulation conveyance fluid.But in the site operation,, both increased labor intensity, also increased construction cost, prolonged the construction time, reduced the site operation working efficiency because condition is relatively poor.

Number of patent application 88201715 disclosed glass fibre reinforced plastics casing insulation direct buried pipe are characterized in being added with successively resin foam separation layer, thermal insulation layer and glass fibre reinforced plastics casing outside metallic conduit.The deficiency of this insulation direct buried pipe is that preparation process is complicated, and insulating efficiency is not ideal enough.

Task of the present invention is to design a kind of above-mentioned deficiency that overcomes, and site operation is convenient, site operation efficient height, and cost reduces, the insulating plastic pipe pipe (road) of high insulating effect.

The present invention is done in such a manner: select mechanicalness, heat resistance, anti-aging, the plastics of good stability are (as melamine plastics, polypropylene plastics, polyvinyl plastics, ABS plastic, polytetrafluoroethylplastic plastic, Maranyl, poly-imines plastics, polyimide plastic, the perfluoro alkoxy plastics, polysulfone plastic, the polyarylsulfone (PAS) plastics, polyether sulfone plastic, the acetal copolymer plastics, the melamine formaldehyde resin plastics, the polyphenylene sulfide plastics, polydiphenyl ether plastics, polyphenylene sulfide plastic, acetal plastic, the alkoxyl group plastics, Polycarbonate plastics and reinforced plastic, conductive plastic etc.) make raw material, with casting pressing mold method for making, compression moulding, drape process or extrinsion pressing are made into the two-ply plastic (road) of the annular space sealing of certain intervals.Use plastics wall or post as supporter and fastening between the two-ply plastic.Can be filled with the low gas (as carbon dioxide) of air or thermal conductivity in the annular space, also can be evacuated.Can apply one deck reflector layer on the tube wall of annular space, reduce thermal radiation, improve heat insulation effect.The linkage structure of screw thread mode can be adopted in the two ends of plastic tube, also can adopt the linkage structure of flange plate mode, or adopts the linkage structure of inserting the box cupling mosaic mode.

The present invention is made as one with the pipe (road) of thermal insulation layer and conveyance fluid, all adopting plastics is raw material, have easy to make, in light weight, insulating efficiency height (insulating efficiency than asbestos fiber heat preserving mode improves more than 10 times), site operation is convenient, and is anticorrosive, of many uses, cost low (not as good as steel pipeline 1/4th) etc. advantage.

The concrete structure of invention is provided by following examples and accompanying drawing thereof.

Fig. 1 is the sectional arrangement drawing that two ends have the double-layer insulating plastic pipe pipe of screw thread mode linkage structure.

Fig. 2 is the sectional view of the A-A line of double-layer insulating plastic pipe pipe.

Fig. 3 is the sectional arrangement drawing that two ends have the double-layer insulating plastic pipe pipe of flange plate mode linkage structure.

Fig. 4 is the left view that two ends have the double-layer insulating plastic pipe pipe of flange plate mode linkage structure.

Fig. 5 adopts plastic tube to insert the sectional arrangement drawing of the linkage structure of plastics box cupling mosaic mode between the two joint plastic tubes.

Shown in Fig. 1～5, the double-layer insulating plastic pipe pipe is made of outer tube 1 and interior pipe 2, and the annular space 3 that keeps a determining deviation is arranged between two pipes.Annular space 3 is sealed, can be filled with the low gas (as carbon dioxide) of air or other thermal conductivity, can is vacuum by pumping also, outer tube 1 and interior pipe 2 by four road plastics walls or post 9 as supporter and fastening.Annular space 3 can apply the reflective thing 4 of one deck on outer tube wall, also can respectively apply the reflective thing of one deck on inside and outside tube wall, to reduce thermal radiation, improves heat insulation effect.The two ends of double-layer insulating plastic pipe pipe are by plastic seal 5 adhesive seal that have with the matter material of plastic tube capacitive, and plastic seal 5 leaves aperture 6 as passage, be used for pumping or charge into the gas of annular space 3 after and sealed.

As shown in Figure 1, the two ends of every joint double-layer insulating plastic pipe pipe are provided with public screw thread 7 and female screw thread 8, as the interconnective a kind of structure of screw thread mode between the plastic tube.As Fig. 3, shown in 4, the two ends of double-layer insulating plastic pipe pipe are the linkage structure of flange plate 5 modes, are provided with eight screw holes that are used for fixing and are connected plastic tube 10 around it.As shown in Figure 5, the two ends of double-layer insulating plastic pipe pipe also can adopt plastic tube to insert the structure that plastics box cupling 12 mosaic modes connect.The matter material of plastics box cupling 5 should have capacitive with plastic tube.The internal diameter of plastics box cupling 5 is identical with the internal diameter of plastic inner pipe 2.The internal diameter of plastics box cupling 5 outer shrouds is identical with the external diameter of plastic outer tube 1.When inlaying, the contact position of box cupling and plastic tube should be coated with one deck plastic binder in advance.

Double-layer insulating plastic pipe pipe (road) selects mechanicalness good, the vitrification point superior heat resistance is good, the plastics of anti-aging good stability are (as melamine plastics, polypropylene plastics, polyvinyl plastics, ABS plastic, polytetrafluoroethylplastic plastic, Maranyl, poly-imines plastics, polyimide plastic, the perfluoro alkoxy plastics, polysulfone plastic, the polyarylsulfone (PAS) plastics, polyether sulfone plastic, the acetal copolymer plastics, the melamine formaldehyde resin plastics, the polyphenylene sulfide plastics, polydiphenyl ether plastics, polyphenylene sulfide plastic, acetal plastic, the alkoxyl group plastics, Polycarbonate plastics and reinforced plastic, conductive plastic etc.) as raw material, by casting pressing mold method for making, compression moulding, drape process or extrinsion pressing are made the pipe (road) of different tube diameters Dimensions according to actual demand.

As shown in Figure 1, in order to strengthen the mechanical property and the radiation resistance of double-layer insulating plastic pipe pipe (road), also can on outer tube 1, increase some plastic tubes and to wrap up in the radiation-resistant reinforced fiber plastics 11 of one deck.

Claims

1, a kind of double-layer insulating plastic pipe pipe (road) is characterized in that being made of two-ply plastic, the annular space that a sealing at regular intervals is arranged between the plastic tube, described annular space can be filled with air or the low gas (as carbon dioxide) of other thermal conductivity, can is vacuum by pumping also.

2,, it is characterized in that to apply one deck reflector layer on the inside and outside tube wall of annular space according to the described double-layer insulating plastic pipe pipe of claim 1 (road).

3, according to the described double-layer insulating plastic pipe pipe of claim 1 (road), in it is characterized in that between pipe and the outer tube by plastics wall or post as supporter and fastening.

4, according to the described double-layer insulating plastic pipe pipe of claim 1 (road), the two ends that it is characterized in that every joint double-layer insulating plastic pipe pipe are by having the plastic seal adhesive seal of the matter material of capacitive with plastic tube, leave aperture on the Sealing as to the annular space pumping or after charging into gas and sealed temporary transient passage.

5, according to the described double-layer insulating plastic pipe pipe of claim 1 (road), the interconnective structure of screw thread mode is adopted at the two ends that it is characterized in that plastic tube (road), also can adopt the interconnective structure of flange plate mode, or adopt plastic tube to insert the structure that plastics box cupling mosaic mode connects.

6,, it is characterized in that also can on outer layer plastic tube, increasing and wrap up in the radiation-resistant reinforced fiber plastics of one deck according to the described double-layer insulating plastic pipe pipe of claim 1 (road).

7, according to claim 1,2,3,4,5,6 described double-layer insulating plastic pipe pipes (road), the raw material that it is characterized in that described plastic tube are melamine plastics, polypropylene plastics, polyvinyl plastics, ABS plastic, polytetrafluoroethylplastic plastic, Maranyl, poly-imines plastics, polyimide plastic, the perfluoro alkoxy plastics, polysulfone plastic, the polyarylsulfone (PAS) plastics, polyether sulfone plastic, the acetal copolymer plastics, the melamine formaldehyde resin plastics, the polyphenylene sulfide plastics, polydiphenyl ether plastics, polyphenylene sulfide plastic, acetal plastic, the alkoxyl group plastics, Polycarbonate plastics and reinforced plastic, conductive plastic.