写出预热器LCS系统设计中的保护措施？
参考答案：
该系统采用一系列安全运行措施，如双电机，双线路，双重限位，温度控制，转子停转报警，紧急手控回复等；
在系统中特别还对扇形板的位移量采用双重显示。LCS-D装有数显表和行程指示钟面，其作用是显示扇形板的准确位置，以便通过在密封运行中的扇形板的移动情况来掌握转子下垂的程度，使操作者心中有数；
为了防止烟气和粉尘的外泄，提升杆的密封装置采来用了柔性石墨加隔离锢套；
传感器中用压缩空气0.2Mp流量1m3吹扫降温。
Have you ever been in a meeting while, someone was making a speech and realized suddenly that your mind was a million miles away? You probably felt sorry and made up your mind to pay attention and ever have been told that daydreaming is a waste of time. “On the contrary,” says L. Giambra, an expert in psychology, “daydreaming is quite necessary. Without it, the mind couldn't get done all the thinking it has to do during a normal day: You can't possibly do all your thinking with a conscious mind. Instead, your unconscious mind is working out problems all the time. Daydreaming then may be one way that the conscious and unconscious states of mind have silent dialogues.” Early experts in psychology paid no attention to the importance of daydreams or even considered them harmful. At one time daydreaming was thought to be a cause of some mental illnesses. They did not have a better understanding of daydreams until the late 1980s. Eric Klinger, a professor of psychology, is the writer of the book Daydreaming. Klinger says, “We know now that daydreaming is one of the main ways that we organize our lives, learn from our experiences, and plan for our futures: Daydreams really are a window on the things we fear and the things we long for in life.” Daydreams are usually very simple and direct, quite unlike sleep dreams, which may be hard to understand. It's easier to gain a deep understanding of your life by paying close attention to your day dreams than by trying to examine your sleep dreams carefully. Day dreams help you recognize the difficult situations in your life and find out a possible way of dealing with them. Daydreams cannot be predicted, they move off in unexpected direction which may be creative and full of ideas. For many famous artists and scientists, daydreams were and are a main source of creative energy. About Daydreams
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