大容量汽轮机性能测试流量喷嘴的校验  

The Calibration and Discussion of Flow Nozzle for Large Capacity Turbine Performance Test

作　　者：江浩[1] 李珩[2] 

机构地区：[1]西安热工研究院有限公司,西安710032 [2]西安电力高等专科学校,西安710032

出　　处：《中国仪器仪表》2008年第10期58-61,共4页China Instrumentation

摘　　要：准确可靠的机组性能指标是发电企业制定机组节能降耗措施,提高设备可用率的基本依据,也是开展节能发电调度工作的基础,主流量测量结果的正确与否是准确获取这些指标最为关键的因素。低β值喉部取压喷嘴是《ASMEPTC6汽轮机性能试验规程》推荐的一种高精度流量测量装置,测量不确定度可达0.25%。为保证其较低的不确定度,校验方法和校验结果评价尤为关键。对其进行了详细的介绍,同时探讨校验中存在的问题。The accurate and reliable unit performance indictors are the basis of developing the energy saving measures and improving the equipment availabilities in the power plant, and it also is the foundation of the saving-energy scheduling work. But correct or not of the primary flow measurement result is the key factors to access those indictors. The low β ratio throat-tap nozzle is a high accurate flow measurement which recommended by ASME PTC6, and it＇s uncertainty is only 0.25%. To ensure the lower uncertainty, the method of calibration and the evaluation of calibrating result are particularly critical, so the detailed presentation is given in the paper, and some exiting problem are discussed.

关 键 词：节能降耗 节能发电调度 喉部取压喷嘴 校验 

分 类 号：TK263[动力工程及工程热物理—动力机械及工程]