公开(公告)号：US20030120415A1

公开(公告)日：2003-06-26

申请号：US09683403

申请日：2001-12-21

Applicant: General Electric Company CRD

Inventor： Charles Erklin Seeley ,  Ramanath Iyer Ramakrishnan ,  James Patrick Claeys ,  Martel Alexander McCallum ,  Anthony Constantine Thermos ,  Hsin-Pang Wang ,  Weiping Wang

IPC: G06F019/00

CPC classification number: F01D21/04 ,  F01D17/085 ,  F01D21/08 ,  F01D25/24 ,  F01D25/26 ,  F05D2270/303 ,  F05D2270/44

Abstract: A method for controlling distortion of a turbine case (nullcasenull) includes measuring a temperature distribution for the case that includes thermal gradients. The method further includes modeling thermal stresses on the case induced by the thermal gradients, calculating an out of roundness index (nullindexnull) resulting from the thermal stresses, and comparing the index with at least one distortion limit to determine whether the case has a satisfactory or an unsatisfactory index. The temperature distribution is controlled for an unsatisfactory index to produce the satisfactory index. A system for controlling distortion of the turbine case includes a thermal measurement system, for measuring the temperature distribution, and a computer configured for modeling the thermal stresses, calculating and comparing the index with the distortion limit, and controlling the temperature distribution for an unsatisfactory index to produce the satisfactory index.

Abstract translation: 一种用于控制涡轮壳体的变形的方法（“情况”）包括测量包括热梯度的情况的温度分布。 该方法还包括对由热梯度引起的壳体上的热应力建模，计算由热应力产生的圆度指数（“指标”），并将该指数与至少一个失真极限进行比较，以确定该情况是否具有 令人满意或令人不满意的指标。 控制温度分布为不令人满意的指标，以产生令人满意的指标。 用于控制涡轮壳体的变形的系统包括用于测量温度分布的热测量系统，以及用于对热应力建模，计算和比较指数与失真极限的计算机，以及控制不满意指数的温度分布 产生令人满意的指标。