Oblique uniform flow deep sea pipeline segment model bidirectional forced vibration experiment apparatus

Abstract

The invention provides an oblique uniform flow deep sea pipeline segment model bidirectional forced vibration experiment apparatus which comprises a deep sea pipeline module, prosthesis modules, horizontal slide modules, vertical slide modules, a measurement analysis control module and a false bottom module. Two ends of the deep sea pipeline module connect with the end prosthesis modules. The vertical slide modules connect with the end prosthesis modules and the horizontal slide modules. The horizontal slide modules are fixedly connected with a bottom of a trailer. The measurement analysis control module is provided on the trailer, and connects with the end prosthesis modules and two slide modules. The prosthesis modules are fixedly connected with the trailer. According to the invention, through setting a false base plate, a surface effect of a seabed can be simulated; mutual coupling of pipe fittings and a flow field; vibration of two degrees of freedom of forward flow and vertical inflow are considered, and condition of forming a certain inclination between inflow and pipe fitting axis is realized; an experimental condition can reach an actual Reynolds number range.

Description

technical field

[0001] The invention belongs to the field of marine engineering, and in particular relates to a bidirectional forced vibration experiment device of a deep-sea pipeline segmented model flowing obliquely and uniformly. Background technique

[0002] Submarine pipelines are laid on the rugged seabed. Due to the inhomogeneity of the seabed contour, seabed undercurrent, tide and other factors, in some areas along the pipeline laying path, the pipeline is exposed to form a suspended section. Under the long-term action of environmental loads, the suspended section is extremely prone to fatigue failure. Among the various failure modes, vortex-induced vibration has the highest probability of occurrence and is the most harmful, that is, the periodic shedding of the vortex on the pipeline causes the lateral and flow-direction alternating external forces acting on the pipeline, causing the object to vibrate.

[0003] Under the above working conditions, the height of the ...

Examples

Embodiment 1

[0035] Such as figure 1 , figure 2 and image 3 As shown, the device includes: a deep-sea pipeline module 1, a first end prosthesis module 2, a second end prosthesis module 3, a first vertical sliding module 4, a second vertical sliding module 5, and a first horizontal sliding module 6 , the second horizontal sliding module 7, the measurement analysis control module 8 and the false bottom module 11, wherein: the two ends of the deep-sea pipeline module 1 are respectively connected with the first end prosthesis module 2 and the second end prosthesis module 3, the first The vertical sliding module 4 is connected with the first end prosthesis module 2 and the first horizontal sliding module 6 respectively, the second vertical sliding module 5 is connected with the second end prosthesis module 3 and the second horizontal sliding module 7 respectively, and the first The horizontal sliding module 6 is fixedly connected to one end of the bottom of the trailer 9 and connected to th...

technical field

[0001] The invention belongs to the field of marine engineering, and in particular relates to a bidirectional forced vibration experiment device of a deep-sea pipeline segmented model flowing obliquely and uniformly. Background technique

[0002] Submarine pipelines are laid on the rugged seabed. Due to the inhomogeneity of the seabed contour, seabed undercurrent, tide and other factors, in some areas along the pipeline laying path, the pipeline is exposed to form a suspended section. Under the long-term action of environmental loads, the suspended section is extremely prone to fatigue failure. Among the various failure modes, vortex-induced vibration has the highest probability of occurrence and is the most harmful, that is, the periodic shedding of the vortex on the pipeline causes the lateral and flow-direction alternating external forces acting on the pipeline, causing the object to vibrate.

[0003] Under the above working conditions, the height of the ...

Examples

Embodiment 1

[0035] Such as figure 1 , figure 2 and image 3 As shown, the device includes: a deep-sea pipeline module 1, a first end prosthesis module 2, a second end prosthesis module 3, a first vertical sliding module 4, a second vertical sliding module 5, and a first horizontal sliding module 6 , the second horizontal sliding module 7, the measurement analysis control module 8 and the false bottom module 11, wherein: the two ends of the deep-sea pipeline module 1 are respectively connected with the first end prosthesis module 2 and the second end prosthesis module 3, the first The vertical sliding module 4 is connected with the first end prosthesis module 2 and the first horizontal sliding module 6 respectively, the second vertical sliding module 5 is connected with the second end prosthesis module 3 and the second horizontal sliding module 7 respectively, and the first The horizontal sliding module 6 is fixedly connected to one end of the bottom of the trailer 9 and connected to th...

Images