Trimerical composite thermal insulation pipe
A composite thermal insulation and trimming technology, applied in the direction of thermal insulation, pipeline protection through thermal insulation, pipeline protection, etc., can solve the problems of rising prices, increasing the cost of pipeline engineering, etc., and achieve the effect of reducing costs
Inactive Publication Date: 2012-05-23
崔承波
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Problems solved by technology
The increase in demand has made the already expensive polyurethane material more tense, and the price has continued to rise, which has greatly increased the cost of pipeline engineering
Method used
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[0022] The first embodiment: as figure 1 , figure 2 As shown, the similarities between this insulation pipe and the existing polyurethane foam insulation pipe are: the inside is also a steel pipe 1, the outside has a polyurethane insulation layer 3, and the outermost is also a waterproof protection pipe made of high-pressure polyethylene thin-walled pipe 4. The difference is: between the steel pipe 1 and the polyurethane insulation layer 3, there is another layer of polystyrene insulation layer 2. Depend on image 3 It can be seen that this polystyrene insulation layer 2 is two semicircular arc panels 5 whose radius matches the outer diameter of the steel pipe made of polystyrene on a special foaming hot-press molding machine. Buckle it on the outside of the steel pipe 1, and bind it with a special clip to make the polystyrene insulation layer 2. Put the polyethylene waterproof protective tube 4 with an inner diameter larger than the outer diameter of the waterproof prote...
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The invention relates to a water pipe, namely, a trimerical composite thermal insulation pipe, wherein a steel tube (1) is arranged in the thermal insulation pipe, a polyurethane thermal insulation layer (3) is arranged outside the steel tube (1), a waterproof protective tube (4) is arranged outside the polyurethane thermal insulation layer (3); and the thermal insulation pipe is characterized in that a polystyrene thermal insulation layer (2) is further arranged between the steel tube (1) and the polyurethane thermal insulation layer (3). The polystyrene thermal insulation layer (2) is formed by buckling at least two cambered plates (5) made of the polystyrene on a foaming hot press forming machine and having a radius identical to an outer diameter of the steel tube (1). The outside of the polystyrene thermal insulation layer (2) is sleeved by the waterproof protective tube (4), and a gap is reserved therebetween. The polyurethane thermal insulation layer (3) is formed by putting a polyurethane foaming gun in the gap, and spraying the polyurethane foam to fill the whole cavity. As a large amount of polyurethane is replaced by polystyrene and polyurethane is still filled between the polyurethane thermal insulation layer and the waterproof protective tube, thus all the advantages of the original polyurethane thermal insulation tube are retained, the cost of the product is greatly reduced, and advanced and practical product and technology are provided for water transfer project.
Description
Technical field [0001] The invention relates to a water delivery pipeline, that is, a three-polymer composite thermal insulation pipe. Background technique [0002] Water pipes used for heating or production must take insulation measures. For hot water pipes, insulation prevents heat loss. For cold water pipes, insulation can prevent freezing. At present, the commonly used thermal insulation pipes are mostly polyurethane thermal insulation pipes. There is a layer of polyurethane foam insulation on the outside of this water pipe, and a layer of waterproof protection tube on the outside of the insulation layer, mostly made of polyethylene or fiberglass. Polyurethane foam, also known as polyurethane rigid foam, is mostly made of active hydrogen such as polyether polyol and isocyanate as the main raw materials, and is foamed by chemical reaction under the action of a catalyst. The manufacturing process of the polyurethane insulation pipe is to put the thicker polyethylene pro...
Claims
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IPC IPC(8): F16L59/147
Inventor 崔承波
Owner 崔承波