燃气轮机高压涡轮盘超速预应力试验研究
Experimental Study on Overspeed Prestressing of High Pressure Turbine Disk of Gas Turbine
孙彦博 1田强 2何建元 1秦鹤勇2
作者信息
- 1. 中国船舶集团有限公司第七○三研究所,黑龙江 哈尔滨 150078;船舶与海洋工程特种装备和动力系统国家工程研究中心-燃气轮机研发与检测试验室,黑龙江 哈尔滨 150078
- 2. 钢铁研究总院有限公司,北京 100081
- 折叠
摘要
为了降低涡轮盘的服役应力、提高涡轮盘的寿命和可靠性,对加工过程中未去应力的涡轮盘试验件进行超速预应力试验,并对试验前后的轮盘试验件进行残余应力测试.研究表明:超速预应力试验可以对轮盘的关键部位(盘心)预制残余压应力,残余周向应力计算值与测量值相比误差为 9.2%;超速预应力试验可以降低轮盘表面的残余应力,与试验前相比残余周向应力最大降幅达58%;超速预应力试验可以提高轮盘的服役寿命,与试验前相比寿命预测提升1 倍.
Abstract
In order to reduce the service stress of the turbine disk,and improve the service life and relia-bility of the turbine disk,the overspeed prestressing test was carried out on a turbine disk test piece with-out removing the stress in machining process,and the residual stress was tested on the disk test piece be-fore and after the test.The results show that overspeed prestressing test can prefabricate the residual com-pressive stress of the key part of the disk(disk core),and the error of the calculated residual circumfer-ential stress is 9.2%compared with the measured value;the overspeed prestressing test can reduce the residual stress on the surface of the disk,and the residual circumferential stress decreases by the maxi-mum of 58%compared with that before the test;the overspeed prestressing test can improve the service life of the disk,and the life prediction can be doubled compared with that before the test.
关键词
燃气轮机/涡轮盘/超速预应力/试验Key words
gas turbine/turbine disk/overspeed prestress/test引用本文复制引用
基金项目
中船集团自立科技项目(202109Z)
黑龙江省自然科学基金(TD2021E001)
出版年
2024
NETL
NSTL
万方数据