Preheat steam multi-pipe bypass temperature regulating system for small-capacity boiler

Abstract

The invention discloses a preheat steam multi-pipe bypass temperature regulating system for a small-capacity boiler. The preheat steam multi-pipe bypass temperature regulating system comprises a low-temperature reheater, a high-temperature reheater, a spray desuperheater, a low-temperature reheater steam bypass pipe, an electric gate valve, a mixed collecting box, a desuperheating water regulating valve, an accident spray desuperheater, a lower-temperature reheater inlet collecting box, a low-temperature reheater outlet collecting box, a high-temperature reheater inlet collecting box and a high-temperature reheater outlet collecting box. By using the preheat steam multi-pipe bypass temperature regulating system for the small-capacity boiler, the problem that it is difficult to regulate the reheat steam of the small-capacity boiler is effectively solved; and the preheat steam multi-pipe bypass temperature regulating system has the advantages of simple system, small bypass pipe resistance, operation simplicity, reliable temperature regulating property and the like.

Description

technical field [0001] The invention belongs to the field of boiler equipment, and in particular relates to a small-capacity boiler reheat steam multi-pipe bypass temperature regulation system, which is used for temperature regulation of the small-capacity boiler reheat steam. Background technique [0002] With the continuous improvement of environmental protection and energy saving and emission reduction requirements, small-capacity boilers with high-parameter reheating systems will be a trend in the future development of the boiler industry. The reheat steam system is used on the small-capacity generator sets of high-pressure and high-temperature ultra-high-pressure boilers. However, due to various factors such as production operation and technology, small-capacity boilers have large load fluctuations and frequent changes in working conditions. Therefore, reliable reheat steam temperature regulation The system is an important condition to ensure the normal and stable opera...

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Problems solved by technology

[0004] The object of the present invention is to solve the above problems and provide a small-capacity boiler reheat steam multi-pipe bypass temperature adjustment system, which can realize reliable adjustment of the small-capacity boiler reheat steam temperature, and can effectively solve the problem of large load fluctuations of small-capacity boilers. Frequent, using flue gas side temperature adjustment means serious bias flow, difficult to control the problem

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