Multi-wall interlayer hollow plastic heat preserving and cold insulating pipeline

A hollow tube and plastic technology, which is applied in the direction of thermal insulation protection of pipelines, thermal insulation, pipeline protection, etc., can solve problems such as poor thermal insulation performance, and achieve the effects of short production cycle, simple processing technology and easy processing.

Inactive Publication Date: 2009-07-01
张征年
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the defect that the existing single and double-wall plastic pipes only use the poor heat preservation performance of the pipe wall, the present invention provides a multi-wall interlayer hollow plastic heat preservation and cold heat preservation pipe, which utilizes the limited space and the air has a small thermal

Method used

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  • Multi-wall interlayer hollow plastic heat preserving and cold insulating pipeline
  • Multi-wall interlayer hollow plastic heat preserving and cold insulating pipeline
  • Multi-wall interlayer hollow plastic heat preserving and cold insulating pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1: a kind of multi-wall interlayer hollow plastic insulation, cold insulation pipeline, such as Figure 13 , Figure 14 As shown, the pipe has six walls and five hollows, and five layers of reinforcement inside the wall. The raw materials used are two kinds, plastic and compound. Extrusion processing is divided into two schemes, scheme 1, plastic pipe walls (1), (2), (6) planting ribs (4) extruder, functional layer (5) extruder, composite with six walls and five layers of ribs Pipe die extrusion processing. The functional layer extruder extrudes the mixed flow material (45) through the secondary flow divider (55), the plastic pipe wall extruder flow with the compound pipe head, the main flow divider cone (49), and the primary flow divider (53). Material (46) (50) confluence, makes six wall five hollow pipes. Scheme two uses three groups of double-walled single- and double-bar composite pipe heads and six extruders, pipe wall (1) (6) planting bars (4) extru...

Embodiment 2

[0044] Embodiment 2: a kind of multi-wall interlayer hollow plastic insulation, cold insulation pipeline, such as image 3 , Figure 4 , as shown in Figure 9, the pipe wall is formed by co-extrusion process of two kinds of plastics. It is made of steel, copper and plastic composite pipe head extruding double-walled hollow plastic embedded metal pipe with high temperature-resistant plastic material, and then embedded in another head and welded with the extruded pipe wall to form it. Multi-wall interlayer hollow plastic-embedded metal insulation pipes with resistance to 360°C of different materials. If the melting temperature of the two plastics differs little, multi-wall steel, copper, and plastic composite pipe heads ( Figure 16 ) Extruded at one time. Plastic embedded metal pipes use seamless pipes, and pipes with large diameters also use straight seam welded pipes to eliminate the expansion and wrapping marks of plastic and metal wires and ensure the covering effect of p...

Embodiment 3

[0046] Embodiment 3: a kind of multi-wall interlayer hollow plastic insulation, cold insulation pipeline, such as Figure 6 , as shown in Figure 10, when extruding the outer pipe wall (2), hollow pipe wall (6) and planting reinforcement (4) with a wall thickness less than 2mm, the pipe wall and planting reinforcement can be made into a mixture of plastics and aluminum powder tendon, wall. It is processed with six-wall five-layer rib composite pipe head and two extruders. The first extrudes the mixed outer pipe wall (10), mixed planted ribs (11), and mixed hollow pipe wall (12), and the second extrudes The inner pipe wall (1) is made of a multi-wall interlayer hollow plastic pipe.

[0047] Thin-walled tube hollow tube wall (6) planting bar (4) dovetail body bar (18) slit (22) is extruded once and made with multi-wall composite tube (16 walls and 17 bars) machine head. The hollow pipe wall (6) utilizes the thickness of the ribs between the rib walls (59) of the sizing sleeve t...

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Abstract

The invention discloses a multi-wall interlayer hollow plastic heat-insulation, cold insulation pipeline, which is composed of an inner pipe wall, a hollow pipe wall, an outer pipe wall which are connected through embedded rebars, and hollow heat-insulation layer arranged between the inner pipe wall, the hollow pipe wall and the outer pipe wall, characterized in that in the hollow heat-insulation layer, atmospheric pressure or negative pressure gases are used or heat-insulation material is filled as heat insulator; each pipe wall and the embedded rebars can be dipped, sprayed, or coated with low-emissivity mixing layer or a functional layer with low emissivity is extrudedly sticked to the inner pipe wall surface of the hollow heat-insulation layer; the outer pipe wall, the hollow pipe wall and the embedded rebars can be manufactured into rebars and walls mixed by plastics, aluminum powder and adsorption getter according to proportion; metal pipes can be embedded into the plastic inner pipe wall, linear expansion difference of which is melt by a compensator or a corrugated pipe; the cross section of the pipelines can be various shapes by using multi-wall composite pipe head extrusion processing or other molding technology; the pipeline is hot-melt by a using a hot-melt clamp, or secured by using a metal pipe outer wall nut and an inner wall nut and a connector, or uses connection method such as flange, cementation, welding or the like.

Description

【Technical field】 [0001] The invention relates to a pipe used for conveying cold and hot media in the fields of construction, chemical industry, petroleum and electric power, in particular to a hollow plastic heat-preservation and cold-preservation pipe between multi-wall layers. 【Background technique】 [0002] There are many types of plastic pipes, including single-wall pipes and double-wall pipes. Double-wall pipe In order to make the pipe diameter larger and the strength higher, a variety of models of double-wall series have been designed. The diversification of the pipe wall type is mostly considered from the aspects of improving the stress structure of the pipe wall and reducing the use of materials. Pipes are mostly used in non-pressurized drainage systems for buildings and infrastructure. At present, the plastic pipes that are widely used in construction and chemical industry to transport cold and hot media are single-wall plastic pipes. For single-wall plastic pip...

Claims

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Application Information

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IPC IPC(8): F16L9/147F16L59/02F16L59/06F16L47/00
Inventor 张征年
Owner 张征年
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