火电厂锅炉一/二次风速测量技术的现状与发展

Current Situation and Development of the Measuring Techniques for Primary and Secondary Air Speed in Boiler Control of Fossil-fired Power Plant

火电厂锅炉一/二次风速的准确快速测量对锅炉的燃烧调整和安全经济运行起着极为重要的作用。一/二次风速测量技术种类繁多,其中差压式风速测量技术应用较为广泛。全面介绍了当前基于多种风速测量技术的测量仪器的工作原理、优缺点和适用范围,阐述了风速测量技术的发展趋势与测量仪器选用原则;同时,指出在实际应用中,应根据实际情况做合理的选择。这对风速测量技术的选择和研究具有一定的参考价值。

Accurate and rapid measurement of the primary and secondary air speed for boiler control in fossil-fired power plant is very important to combustion adjustment and safety and economical operation of the boiler.The techniques for measuring the air speed are in a great variety,while among those;the differential pressure air speed measurement is in wider use.The measuring instruments operational principles,merits and demerits as well as the applicable scopes of various measuring techniques commonly used at present are introduced comprehensively.The developing trend and the selection criteria of the measuring instruments for air speed are described.In addition,specific and reasonable considerations in practical application under actual situation are proposed.These are valuable reference in selecting and researching the air speed measuring techniques.