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我县热水锅炉近几年不断增加,愈来愈显示了它在节能、安全等方而的强大生命力。但也存在一点问题,主要是水循环问题。全县62台热水锅炉全部采用强制低温热水循环。从炉型上看,只有4台是制造厂设计生产的热水锅炉(水管式)。有30台是用户将蒸汽锅炉改装成的热水锅炉。其余12台是制造厂设计生产的蒸汽锅炉,取消下降管水位表,加送回水管座,就作为热水锅炉出厂的。几年来,我们在定期检验中发现:机械厂和煤矿的双纵汽包型水管蒸汽炉,经改装热水锅炉后运行一冬水冷壁管严重结垢、堵塞,並产生激烈水击声。义县旅社和农机修造厂的双横锅筒型蒸汽锅炉改装成热水锅炉后,在水冷壁管和拱管出现鼓包、变形、漏水,被迫仃炉割掉数根管子。对于采用水火管型蒸汽炉改装热水锅炉的,也在水冷壁管上出现上述情况。针对这些问题我们对蒸汽锅炉改装成强制循环的热水锅炉,采用了如下
In recent years, our county hot water boiler has been increasing, showing more and more its strong vitality in energy conservation, safety and other aspects. But there are also some problems, mainly the issue of water cycle. The county’s 62 hot water boilers all use mandatory low-temperature hot water circulation. From the furnace point of view, only four are the design and manufacture of hot water boiler (water pipe). There are 30 units of steam boilers converted into hot water boiler. The remaining 12 units are steam boilers designed and manufactured by the manufacturer to cancel the drop pipe water level gauge and return the water pipe seat to the factory as a hot water boiler. Over the past few years, we found in regular inspections: Machinery and coal mines double longitudinal steam drum steam boiler, after the operation of a modified hot water boiler running a cold water wall tube serious scaling, clogging, and intense water hammer sound. Yixian hotel and farm machinery repair shop double horizontal drum steam boiler into hot water boiler, the water wall pipe and arch tube appear bulge, deformation, leakage, was forced Ding furnace cut off several tubes. For the use of water and steam pipe steam boiler modified hot water boiler, but also in the water wall tube on the above situation. In response to these problems, we modified the steam boiler into a forced circulation of hot water boiler, using the following