燃气轮机使用过程,由于引射空气不足造成了箱装体超温报警故障。从引射空气原理出发,对燃气轮机试验台进行建模并计算,实际试验数据验证计算模型的准确性。利用验证后的计算模型计算,结果排气蜗壳出口面积缩小后可增大引射空气量;最后通过更换喷口试验,试验表明额定功率下,直径为1 280 mm、1 250 mm的喷口,较直径为1 330 mm的喷口引射空气流量分别提高了9.4%、22.3%,箱装体出口空气温度分别降低了7℃、14℃。
During the use of the gas turbine, due to insufficient injection air, the box body overheat alarm malfunction occurred. Based on the principle of ejecting air, the gas turbine test bench was modeled and calculated. The actual test data validation verified the accuracy of the calculation model. By using the validated calculation model, it was found that reducing the outlet area of the exhaust volute can increase the amount of injected air; Finally, through the replacement nozzle test, it was found that under rated power, the injection air flow rate of the 1 280 mm and 1 250 mm nozzles increased by 9.4% and 22.3% respectively compared to the 1 330 mm nozzle, and the outlet air temperature of the box body decreased by 7 ℃ and 14 ℃ respectively.
2024,46(8): 122-125 收稿日期:2023-5-5
DOI:10.3404/j.issn.1672-7649.2024.08.022
分类号:TK477
作者简介:魏昌淼(1989-),男,硕士,高级工程师,研究方向为燃气轮机科研试验及故障诊断
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