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1 引言我国供热锅炉房工艺系统的定压,主要有高位水箱定压、补给水泵定压、蒸汽定压及惰性气体(氮气)定压等,而惰性气体定压又分为气、水接触式和气、水隔离式。高位水箱定压时,水箱需要设置于整个供热系统最高建筑物顶部,近年来新建供热锅炉房已较少采用。补给水泵定压(间歇补水定压),由于其动水压曲线上、下波动,再加上水泵开、关频繁,故障率高。补给水泵定压(连续补水定压)补水量不易调节,且能耗高。蒸汽定
1 Introduction China’s heating boiler process system of constant pressure, there are high water tank constant pressure, feed pump constant pressure, steam pressure and inert gas (nitrogen) constant pressure, and inert gas pressure is divided into gas and water contact Style and gas, water isolated. High water tank constant pressure, the water tank needs to be set at the top of the highest building heating system, in recent years, the new heating boiler room has been less used. Supply pump constant pressure (intermittent replenishment pressure), due to its hydrodynamic pressure curve fluctuations, coupled with the pump on and off frequently, the failure rate is high. Supply pump constant pressure (continuous replenishment pressure) is not easy to adjust the amount of water, and high energy consumption. Steam set