焊管
銲管
한관
WELDED PIPE AND TUBE
2014年
3期
28-33
,共6页
刘迎来%吴宏%井懿平%郭志梅
劉迎來%吳宏%井懿平%郭誌梅
류영래%오굉%정의평%곽지매
焊管%三通%设计壁厚%承载能力
銲管%三通%設計壁厚%承載能力
한관%삼통%설계벽후%승재능력
welded pipe%tee%design wall thickness%bearing capacity
选用不同厚度的三通专用板材，利用爆破验证试验方法，进行了DN1200 Te555强度级别三通的极限承载能力测试和爆破断口分析，结果指出，厚壁三通在高应力状态下的爆破断口均属于脆性断口。基于试验测试结果，提出了优化的管道工程用Te555三通，该三通极限承载能力大于φ1219 mm管道12 MPa设计工作压力的3.5倍，具有较大的管道承压安全裕度，大幅度降低了三通热加工技术难度，并为今后管道工程用大直径三通的制造提供了设计依据。
選用不同厚度的三通專用闆材，利用爆破驗證試驗方法，進行瞭DN1200 Te555彊度級彆三通的極限承載能力測試和爆破斷口分析，結果指齣，厚壁三通在高應力狀態下的爆破斷口均屬于脆性斷口。基于試驗測試結果，提齣瞭優化的管道工程用Te555三通，該三通極限承載能力大于φ1219 mm管道12 MPa設計工作壓力的3.5倍，具有較大的管道承壓安全裕度，大幅度降低瞭三通熱加工技術難度，併為今後管道工程用大直徑三通的製造提供瞭設計依據。
선용불동후도적삼통전용판재，이용폭파험증시험방법，진행료DN1200 Te555강도급별삼통적겁한승재능력측시화폭파단구분석，결과지출，후벽삼통재고응력상태하적폭파단구균속우취성단구。기우시험측시결과，제출료우화적관도공정용Te555삼통，해삼통겁한승재능력대우φ1219 mm관도12 MPa설계공작압력적3.5배，구유교대적관도승압안전유도，대폭도강저료삼통열가공기술난도，병위금후관도공정용대직경삼통적제조제공료설계의거。
In this article, it chose three special plates with different thicknesses to carry out the limit load test and fracture analysis for DN1 200 Te555 tees by using blasting experiment validated method, the result showed that the blasting fracture of thick tee is brittle under high stress state. Based on this test result, the optimized Te555 tees used in pipeline engineering was put forward. The ultimate bearing capacity of this tee was greater than 12 MPa φ1 219 mm pipeline design working pressure of 3.5 times, it was with great pipeline pressure safety margin. It significantly reduced the technical difficulty of thermal processing, and provided design basis for manufacturing large diameter tee in the future.
