Directly-buried steam pipeline for long-distance transportation

Abstract

The invention relates to a directly-buried steam pipeline for long-distance transportation, specifically to a pipeline which is used for urban cogeneration central heating and which is improved according to the underground directly-buried main pipe network, belonging to the technical field of energy conservation and consumption reduction of heat distribution pipelines in the heating field. Advanced porous fiber materials are utilized as a support body, newest nanoscale particles are added to compose a soft coil which is flexible, light, temperature resistant (540 degrees centigrade), hydrophobic and noncombustible, and which has a low thermal conductivity factor lambda that is not greater than 0.003, and pure aluminum foils with high reflection performance of 50-90% are hierarchically filled according to the need, and are organically combined with a heat insulation bracket to compose a new composite heat insulation structure which has small heat transfer coefficient, high radiation shielding rate and no convection radiation. The bracket utilizes a plurality of new locking-plate type structures so as to reduce heat transfer area, and also coordinates with high-efficiency heat insulation materials to securely transfer thrust of the pipeline, also insulate heat, keep warm and prevent heat flow leaking.

Description

[0001] technical field [0002] The invention relates to a direct-buried steam pipeline for long-distance transportation, in particular to a pipeline used for the technical transformation of the underground direct-buried main network for centralized heating of urban heat and power cogeneration, which belongs to the energy-saving and consumption-reducing method of thermal pipelines in the field of heating technology field. Background technique [0003] With the development of science and technology, high-efficiency, energy-saving and environmentally friendly materials are constantly emerging, which promotes the continuous update and development of professional product structure and process applications. Since the beginning of the 20th century, countries all over the world have been moving towards reducing energy consumption, reducing pollution, and building low-carbon cities. In the past ten years, we have started to develop and develop a new type of high-efficiency energy-s...

AI Technical Summary

Problems solved by technology

At present, the start-up of the power pipe network or the drainage of condensed water during operation are very important. Accidental water ingress in the external insulation interlayer of the pipeline or water inflow from the rupture of the inner and outer pipes; long-term use of pipelines, corrosion of underground soil, or construction Accidental trauma in the middle of the accident, causing flooded and floating pipes, and blockage in the drainage section, which seriously affect the operation of the pipe network, heat loss and other problems

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