发电与空调
髮電與空調
발전여공조
Refrigeration Air Conditioning & Electric Power Machinery
2015年
1期
49-51
,共3页
王星%叶建建%潘利坦
王星%葉建建%潘利坦
왕성%협건건%반리탄
蝶阀%合拢焊缝%焊缝拘束应力%焊接
蝶閥%閤攏銲縫%銲縫拘束應力%銲接
접벌%합롱한봉%한봉구속응력%한접
butterfly valve%closured weld joint%constraint stress%welding
水电厂蝶阀安装焊缝实际就是压力钢管与金属蜗壳端的合拢焊缝。蝶阀安装时，金属蜗壳与压力钢管均已经与锚筋固定、并已浇筑混凝土。此时蝶阀安装焊接施工，由于焊缝收缩而使焊缝承受强大的拘束应力，焊缝易于产生焊接裂纹。为保证蝶阀安装焊缝的顺利施工，对合拢焊缝进行焊接拘束应力的施工监测，利用实测数据进行具体分析，从而指导蝶阀安装合拢焊缝的焊接施工。
水電廠蝶閥安裝銲縫實際就是壓力鋼管與金屬蝸殼耑的閤攏銲縫。蝶閥安裝時，金屬蝸殼與壓力鋼管均已經與錨觔固定、併已澆築混凝土。此時蝶閥安裝銲接施工，由于銲縫收縮而使銲縫承受彊大的拘束應力，銲縫易于產生銲接裂紋。為保證蝶閥安裝銲縫的順利施工，對閤攏銲縫進行銲接拘束應力的施工鑑測，利用實測數據進行具體分析，從而指導蝶閥安裝閤攏銲縫的銲接施工。
수전엄접벌안장한봉실제취시압력강관여금속와각단적합롱한봉。접벌안장시，금속와각여압력강관균이경여묘근고정、병이요축혼응토。차시접벌안장한접시공，유우한봉수축이사한봉승수강대적구속응력，한봉역우산생한접렬문。위보증접벌안장한봉적순리시공，대합롱한봉진행한접구속응력적시공감측，이용실측수거진행구체분석，종이지도접벌안장합롱한봉적한접시공。
Butterfly valve field weld joint is actually the closured weld joint of steel penstock and spiral case. Steel penstock and spiral case are fixed by anchor bar and poured with concrete when the butterfly valve is in installation. The weld joints are more prone to welding crack because of strong weld shrinkage-induced constraint stress. In order to the completion of butterfly valve field closured weld joint, field construction monitoring methods are taken. It can instruct butterfly valve field closured weld joint and welding procedure in welding construction according to measurement data and analysis.
