Double-tube-plate cooling air pipe system of high-temperature air preheater

Abstract

The invention discloses a double-tube-plate cooling air pipe system of a high-temperature air preheater. The double-tube-plate cooling air pipe system is a cooling air pipe system which plays a role in protecting double tube plates of a high-temperature air preheater body, and the service life of the high-temperature air preheater is guaranteed. The double-tube-plate cooling air pipe system comprises a cold air main pipe (2), a middle straight pipe (3), a middle bent pipe (4), a right-angle metal hose (5) and a double-tube-plate short section (6), wherein air inlet connecting pipes which are uniformly distributed on the double-tube-plate short section (6) are connected to the cold air main pipe (2) through the right-angle metal hose (5), the middle straight pipe (3) and the middle bent pipe (4). According to the double-tube-plate cooling air pipe system, the problems that an original double-tube-plate cooling air main air pipe system of the high-temperature air preheater is large in occupied area, and the strength and the rigidity are caused due to the fact that the length of a hot air outlet connecting pipe is influenced by the pipe system are effectively solved.

Description

technical field [0001] The invention relates to a double-tube plate cooling system for the heat exchange section body of a shell-and-tube high-temperature air preheater. Supervisor composition. The cooling air enters the cold air main pipe and enters each metal hose and cold air connection pipe, then enters between the double tube sheets, passes through the heat exchange tubes, enters the two cold air pipes in the middle of the tube sheets, and enters the shell of the heat exchange section. The wind participates in heat exchange together, and finally flows out from the hot air outlet of the body. The lower tube sheet of the heat exchange section body is in contact with the heat exchange tubes and high-temperature air, and at the same time bears the influence of high temperature and equipment weight. Therefore, the lower tube sheet must not only withstand high temperature but also maintain its strength and rigidity. Background technique [0002] For many years, shell-and-tu...

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Problems solved by technology

[0005] The invention aims at developing the double-tube-sheet cooling air piping system of the high-temperature air preheater, which effectively solves the problems caused by the large occupation area of ​​the high-temperature air preheater double-tube-sheet cooling air piping system and the length of the hot air outlet connecting pipe being affected by the piping system. strength, rigidity, etc.

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