Ultra-distance steam conveying pipeline

Abstract

The invention relates to an ultra-distance steam conveying pipeline. The ultra-distance steam conveying pipeline comprises a superheated steam section and a superheated / saturated steam section. The superheated steam section and the superheated / saturated steam section each comprise an overhead steam pipeline and a buried steam pipeline. The superheated steam section comprises a steam pipeline body, multiple insulating layers, multiple reflecting layers, a nanometer air cushion thermal insulating layer, a damp-proof layer and a protective layer (or an air layer or an outer steel pipe). The superheated / saturated steam section comprises a steam pipeline body, a heat storage layer, multiple insulating layers, multiple reflecting layers, a nanometer air cushion thermal insulating layer, a damp-proof layer and a protective layer (or an air layer and an outer steel pipe). The ultra-distance steam conveying pipeline further comprises a fixed seat matched with the overhead steam pipeline. The steam pipe conveying distance can be effectively increased, and the conveying distance ranges from 40 km to 50 km. The pressure drop, temperature drop and quality losses in the conveying process are reduced, and the quality losses are only 0-1%. Thus, the steam production cost is reduced, energy is saved, and waste gas emissions are reduced.

Description

technical field [0001] The invention relates to a steam pipeline, in particular to an ultra-long-distance steam pipeline for energy saving and emission reduction, and belongs to the technical field of thermal energy engineering. Background technique [0002] With the vigorous implementation of energy saving and emission reduction policies, the country has further accelerated the development of central heating, and the scope of central heating has also been further expanded. Especially in steam pipe network heating projects, the heating radius is getting larger and larger. The requirements for network pressure drop and temperature drop are getting higher and higher. For the steam pipeline network project of more than 40km, the conventional technology cannot be realized. [0003] The steam pipe network heating project is mainly based on industrial heat load. According to the different production properties of each user, the industrial heat load fluctuates greatly in each time...

AI Technical Summary

Problems solved by technology

For the steam pipeline network project of more than 40km, the conventional technology cannot realize

[0003] The steam pipe network heating project is mainly based on industrial heat load. According to the different production properties of each user, the industrial heat load fluctuates greatly in each time period, and the minimum heat load is often only half of the maximum heat load, or even smaller. During low-load operation, a large amount of condensed water is formed, resulting in large pipe loss and poor economy

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