1000MW机组高压主汽调节阀壳装焊技术研究

Study of Assembling and Welding Technology for 1000MW HP Main Steam Regulating Valve Shell

1000MW超超临界机组高压主汽调节阀作为公司引入的全新产品,其材料、结构都非常特殊,焊缝厚度大,操作空间狭窄,焊接难度非常大。通过开展一系列试验研究,攻克了新材料焊接问题,明确了该阀壳的具体装焊工艺方案,并最终通过试验和产品生产验证,成功解决了该高压主汽调节阀壳的装焊难题。

The high pressure main steam regulating valve of 1000 MW ultra-supercritical unit is a new product. The material and stnlcture are very special, the weld thickness is large, space is narrow, and welding is very difficult. Through a series of experiments, the problem of welding new materials is captured, the scheme of the assembly and welding process of the valve shell is clear. Finally, through the study test and production test, this paper successfully solves the problem of assembly and welding of the valve shell.