焊管
銲管
한관
Welded Pipe and Tube
2015年
9期
51-55,60
,共6页
孙巧飞%姚登樽%范玉然%张希悉
孫巧飛%姚登樽%範玉然%張希悉
손교비%요등준%범옥연%장희실
焊管%油气管道%0.8设计系数%水压试验%应变电测法%压力-容积曲线
銲管%油氣管道%0.8設計繫數%水壓試驗%應變電測法%壓力-容積麯線
한관%유기관도%0.8설계계수%수압시험%응변전측법%압력-용적곡선
welded pipe%oil and gas pipeline%0.8 design factor%hydrostatic test%electromotive strain method%pressure-volume curve
为了保证0.8设计系数油气长输管道的安全运行, 对0.8设计系数试验段管道进行了高强度水压试验. 结合埋地管道的应力状态, 通过理论分析确定了管道试压强度为105%SMYS, 在试验过程中利用压力-容积曲线监测试压过程中整个试验段管道变形情况, 并利用应变电测法测得管道典型位置的应力应变情况. 结果表明, 0.8设计系数水压试验压力在(100%~105%)SMYS时, 水压试验中管道未发生塑性变形, 管道的等效应力均低于规定的最小屈服强度, 且未泄漏, 表明该水压试验压力分段合理, 可以用于0.8设计系数管道的设计试压分段和管道现场水压施工.
為瞭保證0.8設計繫數油氣長輸管道的安全運行, 對0.8設計繫數試驗段管道進行瞭高彊度水壓試驗. 結閤埋地管道的應力狀態, 通過理論分析確定瞭管道試壓彊度為105%SMYS, 在試驗過程中利用壓力-容積麯線鑑測試壓過程中整箇試驗段管道變形情況, 併利用應變電測法測得管道典型位置的應力應變情況. 結果錶明, 0.8設計繫數水壓試驗壓力在(100%~105%)SMYS時, 水壓試驗中管道未髮生塑性變形, 管道的等效應力均低于規定的最小屈服彊度, 且未洩漏, 錶明該水壓試驗壓力分段閤理, 可以用于0.8設計繫數管道的設計試壓分段和管道現場水壓施工.
위료보증0.8설계계수유기장수관도적안전운행, 대0.8설계계수시험단관도진행료고강도수압시험. 결합매지관도적응력상태, 통과이론분석학정료관도시압강도위105%SMYS, 재시험과정중이용압력-용적곡선감측시압과정중정개시험단관도변형정황, 병이용응변전측법측득관도전형위치적응력응변정황. 결과표명, 0.8설계계수수압시험압력재(100%~105%)SMYS시, 수압시험중관도미발생소성변형, 관도적등효응력균저우규정적최소굴복강도, 차미설루, 표명해수압시험압력분단합리, 가이용우0.8설계계수관도적설계시압분단화관도현장수압시공.
In order to guarantee safe operation of long-distance oil and gas pipeline with 0.8 design factor, the hydrostatic test was carried out on the pipe section with a design factor of 0.8, and the hoop stress was 105%SMYS by theoretical analysis combined with the state of buried pipeline. In the test, the pressure-volume curve was used to monitor the deformation of the whole pipeline section, and the electromotive strain method was used to determine the stress state of the typical location. The results showed that no plastic deformation and no leakage are found during the test when the test pressure is in the range of (100%~105%)SMYS, the equivalent stress of pipeline are lower than the specified minimum yield strength, which shows that the hydrostatic test pressure section is reasonable, it can be used for the design test section and hydraulic construction at the scene of pipeline with 0.8 design factor.