论文部分内容阅读
五、水平衡表和压力平衡图为了进行反应、再生部分的计算需要作出水平衡表和压力平衡图。水平衡表的格式见表4。各处松动、吹扫、冷却蒸汽都装有限流孔板。限流孔板都是在临界条件下工作的,能够按设计要求维持流量恒定。如果拿一块限流孔板做试验,先使孔板前后压力相等,则流量为零;然后逐渐降低出口压力,则流量随之增加,但出口压力小于一定值后,流量就不再增加,而保持恒定值。在流量开始不再增加时的出口压力与入口压力之比就叫临界压力比。在临界压力比以下工作的都
Fifth, the water balance and pressure balance chart In order to carry out the reaction, the regeneration part of the calculation needs to be made of water balance and pressure balance diagram. The format of water balance is shown in Table 4. Loose everywhere, purging, cooling steam are equipped with a current limiting orifice. Current limiting orifice plates are working under critical conditions and are capable of maintaining constant flow rates as designed. If you take a current-limiting orifice to do the experiment, first before and after the orifice plate pressure equal, the flow is zero; then gradually reduce the outlet pressure, then the flow increases, but the outlet pressure is less than a certain value, the flow will not increase, and Keep a constant value. The ratio of outlet pressure to inlet pressure at the beginning of flow no longer increases is called the critical pressure ratio. In the critical pressure than the following work