600MW空冷发电机组风量测量装置的技术改造

Technical Upgrading of the Airflow Measurement Device in 600 MW Air-cooled Power Units

叙述了600MW空冷发电机组原装美国威力巴风量测量装置,因空预器密封不良产生的测孔易堵塞,测值波动大,测量精度不够的问题,是由于与测量装置配套的差压变送器选型不合理造成的,以及针对上述问题进行技术改造的方案和取得的效果。

The air preheater of original verabar airflow measurment device in 600 MW air-cooled power units is sealed incompletely, so the problems such as the easily-plugged gauging hole, fierce fluctuation of the measurement values, and the insufficient measuring accuracy are existed. All of these are caused by the irrational selection of differential pressure transducer equipped with measurment device. The technical upgrading proposal taking account of the problem above and the effect of it are also described in this article.