Heat insulating type double-walled corrugated pipe

Abstract

The invention discloses a heat insulating type double-walled corrugated pipe. The heat insulating type double-walled corrugated pipe comprises a double-walled corrugated pipe layer and a vacuum heat insulating plate heat-insulating layer connected with the double-walled corrugated pipe layer. A vacuum heat insulating plate used by the double-walled corrugated pipe has good heat insulation performance, and a very high heat insulation effect can be achieved only in need of thin thickness, and existing polyurethane foam heat insulation materials are replaced by the vacuum heat insulating plate, so that the thickness of the heat insulating layer is reduced, and the heat insulation effect is also improved. Two design plans adapt to different working conditions; compared with the existing polyurethane foam heat insulation materials, the heat insulating type double-walled corrugated pipe disclosed by the invention adopts prefabricated parts, so that transportation is convenient, and damage ina transportation process is avoided; and moreover, compared with the previous on-site mounting of the polyurethane foam heat insulation materials, the double-walled corrugated pipe is convenient tomount, the heat insulating layer cannot be destroyed, and the double-walled corrugated pipe can adapt to complicated working conditions on site preferably.

Description

technical field [0001] The invention relates to the technical field of railway tunnel drainage, in particular to a thermal insulation double-wall corrugated pipe. Background technique [0002] The drainage pipes of railway tunnels in cold regions often freeze the accumulated water due to the extremely low temperature in winter, which affects the drainage effect. Therefore, it is necessary to insulate the drainage pipes of railway tunnels in cold regions. The current tunnel drainage pipes in cold regions use foamed polyurethane shells for insulation. This insulation material is brittle and needs to be installed on site. It is difficult to ensure the quality, and it is easy to leave gaps, resulting in insulation voids and poor insulation effects. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a heat-insulating double-wall corrugated pipe, which is used as a drainage pipe for railway tunnels in cold regions, and s...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a heat-insulating double-wall corrugated pipe, which is used as a drainage pipe for railway tunnels in cold regions, and solves the problem that the insulation layer of traditional drainage pipes is easily damaged, powdered, difficult to construct, and difficult to ensure quality during construction. , poor insulation effect, etc.

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