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| 1000MW级超超临界机组蒸汽阀材质更改可行性研究 | |
| 引用本文： | 吴军,肖世荣,李延群,王泳涛,杨富.1000MW级超超临界机组蒸汽阀材质更改可行性研究[J].中国电力,2006,39(1):59-62. |
| 作者姓名： | 吴军 肖世荣 李延群 王泳涛 杨富 |
| 作者单位： | 1. 山东大学,山东,济南,250010;山东电力研究院,山东,济南,250002 2. 山东电力研究院,山东,济南,250002 3. 华电国际邹县发电厂,山东,邹城,273522 4. 中国电力企业联合会,北京,100761 |
| 摘 要： | 通过对9%～12%Cr耐热钢基本特点的分析认为,KT5917(12Cr铸钢)的Cr、W含量较KT5031A(9Cr-1Mo锻钢)高,所以KT5917(12Cr铸钢)的高温抗蠕变性能、抗氧化性能、抗腐蚀性能优于KT5031A(9Cr-1Mo锻钢)。但KT5917(12Cr铸钢)610℃许用应力小于KT5031A(9Cr-1Mo锻钢)的许用应力,使其阀体设计壁厚大于KT5031A(9Cr-1Mo锻钢)设计壁厚,铸造阀体还存在无损检测和焊接难度增大的问题,KT5917(12Cr铸钢)的实际使用性能要劣于KT5031A(9Cr-1Mo锻钢)。 |
| 关 键 词： | 超超临界机组 主汽阀 调节阀 中压联合汽阀 耐热钢 |
| 文章编号： | 1004-9649(2006)01-0059-04 |
| 收稿时间： | 2005-08-10 |
| 修稿时间： | 2005-11-03 |
Study on the possibility to change the material of MSV,CV and CRV used in 1 000 MW-level ultra supercritical unit |
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| WU Jun,XIAO Shi-rong,LI Yan-qun,WANG Yong-tao,YANG Fu.Study on the possibility to change the material of MSV,CV and CRV used in 1 000 MW-level ultra supercritical unit[J].Electric Power,2006,39(1):59-62. | |
| Authors: | WU Jun XIAO Shi-rong LI Yan-qun WANG Yong-tao YANG Fu |
| Affiliation: | 1. Shandong University, Jinan 250010, China; 2. Shandong Electric Research Institute, Jinan 250002, China; 3. Zouxian Power Plant, Zoucheng 273522,China; 4.China Electricity Council, Beijing 100761, China |
| Abstract: | Based on the analysis of principal characteristics of 9%~12%Cr heat-resistant steel,this paper pointed out that the creep,oxidation and corrosion resistance performance of KT5917(12Cr casting) steel is better than that of KT5031A(9Cr-1Mo forging) steel as a result of higher content of Cr and W.On the other hand,the allowable stress of KT5917(12Cr casting) steel is 53.8 MPa,less than 56.8 MPa of KT5031A(9Cr-1Mo forging) steel.As a result,the design thickness of KT5917(12Cr casting) valve body is more than that of KT5031A(9Cr-1Mo forging) valve.Meanwhile,the casting valve body with thicker casing also leads to the difficulties in Nondestructive Testing(NDT) and welding.The practical performance of KT5917(12Cr casting) is inferior to that of KT5031A(9Cr-1Mo forging). |
| Keywords: | ultra-supercritical unit main stop valve control valve reheat stop valve heat-resistant steel |
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