英语翻译The spooling-on phase of the reeling process was simulat
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英语翻译
The spooling-on phase of the reeling process was simulated by small scale bending testing to prepare for the full scale bending testing.It was necessary to be aware of how the bending tests (small scale and full scale) resembled the spooling-on phase and how the bending tests differed from the actual spooling-on process.It needed to be determined whether these differences could be neglected or how they could be accounted for.When comparing actual reeling with simulation of reeling in a bending rig (small scale and full scale),several differences were identified:
1.During actual reeling the reaction force of the reel on the pipeline (Freel;T;P) is in equilibrium with the perpendicular force in the tensioner (FT;P in Figure 5.3) and the reaction force of the reel on the pipeline is small due to a large distance between the reel and the tensioner.In the bending rig the reaction force of the reel on the pipe (Freel;HC;P) was in equilibrium with the perpendicular component of the hydraulic cylinder force (FHC;P in Figure 5.8) and the reaction force of the reel on the pipe was relatively large due to the relatively small distance between the reel and the hydraulic cylinder.
2.During actual reeling the reaction force of the reel on the pipeline (Freel;T;P) is constant because of the fixed distance between the tensioners and reel on board of the reeling vessel.In the bending rig the reaction force of the reel on the pipe (Freel;HC;P) was not constant in value.This reaction force of the reel on the pipe increased as more pipe became in contact with the reel and the distance between the reel and the hydraulic cylinder decreased.
3.During actual reeling,the tension force in the pipeline delivered by the tensioners (FT;A in Figure 5.3) is constant.In the bending rig the tension force in the pipe caused by the axial component of the hydraulic cylinder (FHC;A) was increasing in value throughout the test due to the increasing hydraulic cylinder force and the changing orientation of the hydraulic cylinder (Figure 5.8).
4.During actual reeling a pipeline with welds is being reeled while in the small scale reeling test only pipes without a weld were reeled.However,in the full scale bending rig pipes with a weld were reeled (Chapter 6 and 7).
不要用翻译软件应付 完全不能用
The spooling-on phase of the reeling process was simulated by small scale bending testing to prepare for the full scale bending testing.It was necessary to be aware of how the bending tests (small scale and full scale) resembled the spooling-on phase and how the bending tests differed from the actual spooling-on process.It needed to be determined whether these differences could be neglected or how they could be accounted for.When comparing actual reeling with simulation of reeling in a bending rig (small scale and full scale),several differences were identified:
1.During actual reeling the reaction force of the reel on the pipeline (Freel;T;P) is in equilibrium with the perpendicular force in the tensioner (FT;P in Figure 5.3) and the reaction force of the reel on the pipeline is small due to a large distance between the reel and the tensioner.In the bending rig the reaction force of the reel on the pipe (Freel;HC;P) was in equilibrium with the perpendicular component of the hydraulic cylinder force (FHC;P in Figure 5.8) and the reaction force of the reel on the pipe was relatively large due to the relatively small distance between the reel and the hydraulic cylinder.
2.During actual reeling the reaction force of the reel on the pipeline (Freel;T;P) is constant because of the fixed distance between the tensioners and reel on board of the reeling vessel.In the bending rig the reaction force of the reel on the pipe (Freel;HC;P) was not constant in value.This reaction force of the reel on the pipe increased as more pipe became in contact with the reel and the distance between the reel and the hydraulic cylinder decreased.
3.During actual reeling,the tension force in the pipeline delivered by the tensioners (FT;A in Figure 5.3) is constant.In the bending rig the tension force in the pipe caused by the axial component of the hydraulic cylinder (FHC;A) was increasing in value throughout the test due to the increasing hydraulic cylinder force and the changing orientation of the hydraulic cylinder (Figure 5.8).
4.During actual reeling a pipeline with welds is being reeled while in the small scale reeling test only pipes without a weld were reeled.However,in the full scale bending rig pipes with a weld were reeled (Chapter 6 and 7).
不要用翻译软件应付 完全不能用
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旨在为大规模弯曲试验做准备,我们用小型弯曲试验模拟了卷筒制造过程中的卷筒这一步骤.了解弯曲试验(无论是小型还是大型的)与卷筒制造的相似性以及弯曲试验与实际卷筒过程的区别是十分必要的.我们必须明确这些区别到底是十分重要,还是无足轻重,乃至可以被忽视.
把实际卷筒过程与利用弯曲装置(无论是小型还是大型的)模拟卷筒实验进行对比,我们发现其区别如下:
1. 在实际卷筒过程中,卷筒对管道的反作用力与张紧轮的垂直力是平衡的.卷筒对管道的反作用力部分是来源于卷筒和张紧轮之间较远的距离.而在实验弯曲装置中,卷筒对管道的反作用力与垂直部分的液压缸推力(图5.8)是平衡的.卷筒对管道的反作用力很大部分是源于卷筒和液压缸之间相对较短的距离.
2. 在实际卷筒过程中,由于张紧轮与卷机面板上的卷筒的距离是固定的,所以卷筒对管道的反作用力也是恒定的.而在实验弯曲装置中,卷筒对管道的反作用力数值并不恒定.与卷筒发生作用的管子越多,卷筒和液压缸之间的距离缩短,这种反作用力就会随之加大.
3. 在实际卷筒过程中,由张紧轮传送的管道张力(图5.3中A处)是恒定的.而在实验弯曲装置中,由液压缸轴向部分造成的管道的张力数值在整个实验中是不断上升的,这是由液压缸推力的不断增加和推力方向的不断改变造成的.(图5.8)
4. 在实际卷筒过程和大型弯曲装置中,被使用的卷筒有焊缝.在小型卷筒实验中卷筒是没有焊缝的.(第6、7章)
旨在为大规模弯曲试验做准备,我们用小型弯曲试验模拟了卷筒制造过程中的卷筒这一步骤.了解弯曲试验(无论是小型还是大型的)与卷筒制造的相似性以及弯曲试验与实际卷筒过程的区别是十分必要的.我们必须明确这些区别到底是十分重要,还是无足轻重,乃至可以被忽视.
把实际卷筒过程与利用弯曲装置(无论是小型还是大型的)模拟卷筒实验进行对比,我们发现其区别如下:
1. 在实际卷筒过程中,卷筒对管道的反作用力与张紧轮的垂直力是平衡的.卷筒对管道的反作用力部分是来源于卷筒和张紧轮之间较远的距离.而在实验弯曲装置中,卷筒对管道的反作用力与垂直部分的液压缸推力(图5.8)是平衡的.卷筒对管道的反作用力很大部分是源于卷筒和液压缸之间相对较短的距离.
2. 在实际卷筒过程中,由于张紧轮与卷机面板上的卷筒的距离是固定的,所以卷筒对管道的反作用力也是恒定的.而在实验弯曲装置中,卷筒对管道的反作用力数值并不恒定.与卷筒发生作用的管子越多,卷筒和液压缸之间的距离缩短,这种反作用力就会随之加大.
3. 在实际卷筒过程中,由张紧轮传送的管道张力(图5.3中A处)是恒定的.而在实验弯曲装置中,由液压缸轴向部分造成的管道的张力数值在整个实验中是不断上升的,这是由液压缸推力的不断增加和推力方向的不断改变造成的.(图5.8)
4. 在实际卷筒过程和大型弯曲装置中,被使用的卷筒有焊缝.在小型卷筒实验中卷筒是没有焊缝的.(第6、7章)
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