超临界机组空冷风机运行优化试验研究  

Experimental study on operation optimization of air-cooled fans in supercritical units

作　　者：陈树宽 杜秦洲 王瑶 高飞 周戈 周强 薛康康 CHEN Shu-kuan;DU Qin-zhou;WANG Yao;GAO Fei;ZHOU Ge;ZHOU Qiang;XUE Kang-kang

机构地区：[1]大唐陕西发电有限公司延安热电厂,陕西延安716000 [2]中国大唐集团科学技术研究院有限公司西北电力试验研究院,陕西西安710065

出　　处：《节能》2024年第6期57-60,共4页Energy Conservation

摘　　要：文中通过对空冷风机的运行进行优化,确定空冷机组在不同环境温度和负荷下的最佳风机运行频率,提高机组运行的经济性。结果表明,机组50%THA(理论热可用率)工况时,在5~15℃温度参数变化范围内,增加空冷风机频率,使机组背压接近阻塞背压;在5~30℃温度参数变化范围内,空冷风机频率应运行在39 Hz左右。机组75%THA工况时,在5~15℃温度参数变化范围内,增加空冷风机频率,使机组背压接近阻塞背压;在15~25℃温度参数变化范围内,空冷风机频率应运行在39 Hz左右;在超过30℃温度参数变化范围内,空冷风机应超频运行。机组100%THA工况时,在5~30℃温度参数变化范围内,空冷风机均应超频运行。Optimizing the operation of air-cooled fans to determine the optimal fan operating frequency for air-cooled units under different environmental temperatures and loads,thereby improving the economic operation of the unit.The results show that at 50%THA condition of the unit,within the temperature parameter range of 5~15°C,increasing the frequency of the air-cooled fans causes the unit back pressure to approach the blocking back pressure;within the temperature parameter range of 5~30°C,the air-cooled fan frequency should operate around 39 Hz.At 75%THA condition,within the temperature parameter range of 5~15°C,increasing the frequency of the air-cooled fans causes the unit back pressure to approach the blocking back pressure;within the temperature parameter range of 15~25°C,the air-cooled fan frequency should operate around 39 Hz;when the temperature parameter exceeds 30°C,the air-cooled fans should operate at an overclocked frequency.At 100%THA condition of the unit,within the temperature parameter range of 5~30°C,the air-cooled fans should all operate at an overclocked frequency.

关 键 词：直接空冷 运行优化 最佳真空 最佳风机频率 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]