Long heat transportation net method

Abstract

The invention relates to a long-distance heating network method, which is characterized in that: high-temperature glass wool insulation material is used, the fiber diameter is ≤6 μm, and the fiber length is 20-25cm; a multi-layer insulation structure is adopted, and the top third of the outermost insulation layer A circular arc part is added with a layer of high-temperature glass wool outer layer top insulation layer, and each layer of insulation material is wrapped with a flame-retardant aluminum foil glass fiber cloth reflective layer; high-efficiency heat insulation and energy-saving sliding pipe supports are used; the outermost layer is covered Color-coated board; set steam pipe start-up drainage in the front and middle of the steam pipe network, and set start-up drainage and continuous drainage in the rear of the steam pipe network. The invention can effectively reduce the heat loss in the steam transportation process, ensure the heat supply parameters of the steam pipe network terminal, reduce energy consumption, and reduce production costs. After adopting the present invention, the temperature drop of the steam pipeline is reduced from the conventional design of 15-20 degrees per kilometer to less than 8 degrees per kilometer, and the transportation distance of the steam pipe network can reach 15-18 kilometers, and the longest can reach 20 kilometers.

Description

technical field [0001] The invention relates to a long-distance heating network method, in particular to a long-distance steam pipeline network transmission technology for energy conservation and emission reduction, and belongs to the technical field of thermal energy engineering. Background technique [0002] According to the current conventional design technology of the steam pipe network, the transmission distance of the steam pipe network is generally 5 to 8 kilometers, and the longest is no more than 10 kilometers (the current design specification is also stipulated in this way). [0003] Following the requirements of the national energy conservation and emission reduction policy, the state compulsorily shuts down high-energy-consuming small thermal power plants below 200,000 Kwh. Energy, improve heat-to-electricity ratio. Therefore, at present, all power generation or thermal power enterprises must carry out unit transformation, provide external heating or increase th...

AI Technical Summary

Problems solved by technology

[0005] However, according to the current conventional design technology, in the steam transportation process, due to the limitation of the existing technology, the heat loss is large, the temperature drop is large (15-20°C temperature drop per kilometer), and the heating radius is greatly limited. , unable to meet the requirements of long-distance terminal heating users

Therefore, many enterprises cannot adopt central heating

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