Steam pipeline laying method for thermoelectric plant

Abstract

The invention relates to a method for laying stem tube in thermoelectric plant, which comprises: laying thermal-insulated waterproof underground tube, laying open tubes, processing tube bend head, and arranging condensed water discharger. Compared with present technique, the inventive tube has long service life and wide application.

Description

technical field [0001] The invention relates to a technology for laying steam pipes, in particular to a method for laying steam pipes in thermal power plants. Background technique [0002] The laying process of laying large-diameter steam pipes outside the thermal power plant leads from the thermal power plant to the user, and the geographical environment to be passed through is very complicated. On flat ground, pipeline ditches are generally excavated, and then steam pipelines are laid in them; in places where pipeline ditches cannot be excavated, such as mountain ridges, stone walls, and residential areas, the method of erecting at high altitude is adopted. But no matter which laying method all has its deficiency. [0003] In the prior art, the structure of large-diameter steam pipes laid outside thermal power plants is that the center is the inner steam pipe, the second layer is the insulation layer, the outside of the insulation layer is a steel...

AI Technical Summary

Problems solved by technology

Due to the heavy weight and special shape of the insulation pipe elbow, and the soft insulation layer is filled between the steel shell and the inner steam pipe, no matter whether the hoisting steel cable is hung on the steel shell or the inner steam pipe during the hoisting process It will cause damage to the insulation layer material and misalignment between the inner steam pipe and the steel shell, so that the insulation performance and service life of the pipe will be affected.

[0006] Furthermore, most of the devices currently used for steam pipe condensate discharge are that the drain pipe is connected at the lower joint of the steam pipe, and the drain pipe has a small bend at the joint. In this way, when the temperature difference between the external environment is large, the connection between the drain pipe and the steam pipe is easily damaged due to thermal expansion and contraction, which will not only affect the normal operation of the steam pipe, but also be very inconvenient to maintain

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