概述锅炉排污的意义、排污与节能的关系和定期排污的操作技术要点等。
Significance of boiler blowdown, relationship of blowdown and energy-saving and key points of operation technology are described.
锅筒的紧急放水及锅炉的各种疏放水亦通过排污管路接入定期排污扩容器。
Drum's emergency water drainage pipes and boiler's other water drainage pipes will also be connected with intermittent flash evaporator via blowdown pipelines.
分析了利用继电器实现锅炉定期排污控制系统存在的问题，阐述了采用PC机改进后的该系统控制过程及特点。
Analyses problems of boiler regularity blow down control system which is controlled by relay, describes control process and characteristic of the system using PC.
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