引射汇流装置在供热机组中的应用研究

Research on the Application of Ejector Afflux Installment in Heat-supplying Unit

为充分利用抽汽供热系统中高压抽汽能量,实现热能"质"的合理利用,采用引射汇流装置实现高压缸排汽(以下简称高排)与四段抽汽(以下简称四抽)联合供汽,并把除氧器排汽引入该装置,从而有效减少了高排抽汽量,解决了由于除氧器排气带汽而造成的能量损失问题,提高了机组的经济性。根据已有装置的试验数据,利用□分析方法进行定量计算,对于某330MW热电联产机组计算结果表明,加装引射汇流装置具有很好的节能效果,并得出了不同调节手轮位置时引射汇流装置引射比的变化规律,为该装置的应用奠定了基础。

In order to take full use of high pressure extraction energy in the extraction steam heating system and realize reasonable use of heat ＂mass＂ ,we adopt the ejector afflux installment to make high pressure cylinder exhaust steam and the fourth section extraction joint for steam-supplying, and draw the deaerator exhaust steam into the device, so as to effectively reduce the high pressure extraction quantity, solve the problem of energy loss caused by the deaerator exhaust gas blended steam, and improve the economy of the unit. According to the existing device test data, we conduct quantitative calculation by using exergy analysis method. For a 330 MW cogeneration unit calculation results show that the ejector afflux device has the very good energy-saving effect, and we draw a different ejector ratio variation law with different adjustment handwheel position ,which lays a foundation for the application of the device.