CAJ | 학술논문

分析冷氨泵低速运行时打量突然下降的主要原因是由于泵打量过低，不足以将热量带走，液氨在泵的某一级或几级入口过热汽化造成的。根据机组已知的设计参数计算实际工况下冷氨泵在2608r／min转速运转时，为保证泵内液氨不汽化，散热所需的最小流量为13．54m^3／h。
분석랭안빙저속운행시타량돌연하강적주요원인시유우빙타량과저，불족이장열량대주，액안재빙적모일급혹궤급입구과열기화조성적。근거궤조이지적설계삼수계산실제공황하랭안빙재2608r／min전속운전시，위보증빙내액안불기화，산열소수적최소류량위13．54m^3／h。
Aiming at a sudden drop of pumping capacity of cold-ammonia pump under running at a low speed, the analysis confirms that this is caused by an over-heat vaporization of liquid ammonia at the suction of one stage or at the suctions of some stages owing to a low pumping capacity insufficient to take the heat away. In order to ensure a non-vaporization of liquid ammonia in the pump, the minimum flow needed for heat release is 13.54 m^3/h calculated with the known design parameters of the cold-ammonia pump running at the actual condition of 2608r/min.