Intermittent prefabricated overhead heat insulation pipe and manufacturing method thereof

Abstract

The invention discloses an intermittent prefabricated overhead heat insulation pipe and a manufacturing method thereof, and relates to the technical field of long-distance steam conveying. The heat insulation pipe comprises a core pipe, an inner lining layer, an outer protection pipe, a plurality of hard heat insulation sections and a plurality of soft heat insulation sections, wherein the hard heat insulation sections and the soft heat insulation sections are arranged between the inner lining layer and the outer protection pipe, wrap the outer side of the inner lining layer and are arranged in a staggered mode in the length direction of the core pipe; the hard heat insulation sections and the soft heat insulation sections are in staggered lap joint through a heat insulation material; andan organic heat insulation layer is arranged on the inner side of the outer protection pipe and used for tightly wrapping the hard heat insulation sections and the soft heat insulation sections in theouter protection pipe together. By implementing the technical scheme provided by the embodiment of the invention, the manufactured heat insulation pipe can achieve the effects of bearing the operation load of a heat supply network and considering the heat insulation function, has excellent heat insulation performance, is low in heat conductivity coefficient and light in weight, beneficial to remarkably reducing the energy loss of a heat supply pipe network, and applied to the field of prefabricated overhead steam conveying so as to achieve the effects of safety, stability, high efficiency andenergy conservation of the whole pipe network.

Description

technical field [0001] The invention relates to the technical field of long-distance steam transportation, in particular to an intermittent prefabricated overhead heat-insulated pipe and a manufacturing method thereof. Background technique [0002] With the increasingly serious environmental problems, the energy sector has higher and higher requirements for energy conservation and emission reduction. The construction scale of thermal power plants and the matching heating networks is developing rapidly, and the requirements for thermal insulation technology of heating networks are also getting higher and higher. As a result, the disadvantages of traditional heat insulation technology are gradually exposed, and the development and application of finished heat insulation pipes have attracted more and more attention from all over the world. [0003] As far as steam pipeline insulation technology is concerned, there are currently three types of prefabricated insulation pipe struc...

AI Technical Summary

Problems solved by technology

However, according to the inventors’ practice, they found that the above-mentioned finished heat-insulated pipes also showed their own deficiencies in the face of problems such as support, heat insulation, and processing. Difficult problem, the soft heat insulation material at the position of the pipe support is easy to be crushed, resulting in failure of heat insulation at this place, and it is difficult to ensure the installation height of the pipe; the use of a fully rigid heat insulation structure is expensive, heavy load, and requires high strength for the pipe support and basic structure , and the heat insulation effect is average; it is not easy to process the hard + soft heat insulation structure, and the rigid polyurethane is directly foamed outside the soft heat insulation material, and the foam material will squeeze and deform the inner soft material, resulting in the insulation thickness cannot be guaranteed , the above problems all expose the room for optimization in the design, processing, installation and other links of the finished thermal insulation pipe

Images