电蒸汽锅炉受热面结构介绍

1、一般水冷壁回路均由不受热的下降管和作为上升管的受热水冷壁管构成,下降管从上锅筒将炉水经集箱引入水冷壁,下降管和水冷壁管的上端和上锅筒胀接或焊接,下端和下集箱焊接,炉膛中部的斜管束为对流蒸发受热面管束。
General wall circuit by the unheated down pipe and a rising pipe as the water wall tube, down tube from the upper boiler barrel water collecting box into the furnace water wall tube, the upper end and the decline of water wall tubes and the upper barrel expansion or welding, and the lower end of the lower header welding, oblique the tube bundle in the middle of the hearth for the convective evaporation heat exchange tubes.

2、多次强制循环电蒸汽锅炉http://www.eossinc.com/的水冷壁均为垂直上升管屏,其结构与自然循环锅炉的水冷壁结构相似。
Water cooled wall repeatedly forced circulation electric steam boilers are vertical upward tube screen, water wall structure and the structure of natural circulation boiler similar.

3、电蒸汽锅炉受热面的高温腐蚀及发生在烟温>700℃的区域内,布置在炉膛火焰中心区的水冷壁管金属与含硫高温烟气接触会发生水冷壁管的高温腐蚀减轻这类腐蚀的方法有各燃烧器中燃料和空气分配均匀;火焰不直接冲刷管壁;过量空气系数不宜过;采用添加剂和应用渗铝管作为水冷壁等。
Electric steam boiler high temperature corrosion of heating surface and occurred in the smoke temperature of >700 DEG C area, method of metal and sulfur of high temperature flue gas contact will occur high temperature corrosion of water wall tube to alleviate this kind of corrosion of the water wall is arranged in the furnace flame center area of the pipe with the fuel and air distribution of the burner flame uniform; not to directly flush the pipe wall; excess air coefficient should not be too small; the use of additive and application of aluminizing pipe as the water wall.

4、在电蒸汽锅炉http://www.eossinc.com/中,根据用户需要也可装设过热器,但汽温一般不超过400℃,过热器可根据布置位置和传热方式分为几类,工业锅炉的过热器均为对流式过热器,现代大型电站锅炉的过热器则常由对流式,半辐射式和辐射式过热器组成。
In the electric steam boiler boiler, according to user needs can also be installed steam temperature of superheater, but generally not more than 400 DEG C, superheater can be according to the arrangement position and mode of heat transfer is divided into several categories, industrial boiler superheater are convection superheater, the modern large-scale power plant boiler superheater is often by convection, radiation and a half radiant superheater composition.

 


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