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浅谈棒材生产中冷床同步控制的改进
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作者 魏玉生 《酒钢科技》 2012年第3期239-240,共2页
为了达到两段冷床的同步运行,常规方法是利用PLC计算冷床转动的角度来给定速度来实现,但这种方法由于冷床角度的计算不准,时常造成冷床的错位,影响了正常生产。在酒钢100万吨生产线建设中我们对冷床的同步控制采用了一种全新的同步控制... 为了达到两段冷床的同步运行,常规方法是利用PLC计算冷床转动的角度来给定速度来实现,但这种方法由于冷床角度的计算不准,时常造成冷床的错位,影响了正常生产。在酒钢100万吨生产线建设中我们对冷床的同步控制采用了一种全新的同步控制方法:将1#冷床电机为主,2#冷床电机为从,在传动中做主从位置跟随系统,更好的实现了冷床的同步控制。本文主要论述的是冷床的同步控制方法。 展开更多
关键词 冷床 同步 码盘脉冲 工艺调节器
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Characteristics of a Supersonic Swirling Dehydration System of Natural Gas 被引量:24
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作者 刘恒伟 刘中良 +2 位作者 冯永训 顾克宇 颜廷敏 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2005年第1期9-12,共4页
A new type of dehydration unit for natural gas was briefly described and its basic structure and working principles were presented. An indoor test rig for testing the unit performance was set up and the experimental r... A new type of dehydration unit for natural gas was briefly described and its basic structure and working principles were presented. An indoor test rig for testing the unit performance was set up and the experimental results were given. The results showed that the unit could attain a maximum dew point depression of about 20℃ without any need of external mechanical power and chemicals. The pressure loss ratio, shock wave and the flow rate had great influence on the dehydration characteristics. From the systematic analysis of the factors that affect the dehydration efficiency of the unit, the suggestions for improving the unit are put forward. 展开更多
关键词 supersonic swirling separator DEHYDRATION natural gas
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