An adaptive vortex-induced vibration suppression device with a wing-shaped streamer
A technology of vortex-induced vibration and suppression device, which is applied to drill pipes, casings, wellbore/well components, etc., can solve problems such as marine environment damage, and achieve the purpose of suppressing vortex-induced vibration, suppressing the formation and development of vortices, and prolonging the use of effect of life
Active Publication Date: 2019-04-09
YANSHAN UNIV
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Once the riser is damaged, it will not only cause major safety accidents at sea, cause huge economic losses, but also cause catastrophic damage to the marine environment
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.
[0021] exist figure 1 In the schematic diagram of the self-adaptive vortex-induced vibration suppression device with wing-shaped streamers shown, the sliding sleeve 11 is connected and fastened outside the riser by bolts 4, and the porous cover 5 is set on the sliding sleeve through the positioning mandrel; the spoiler One end of 10 is connected with porous cover 5 through positioning mandrel, and the other end is connected with wing-shaped streamer 8 through rivet 9 .
[0022] Such as figure 2 As shown, the sliding sleeve 11 is composed of two identical light alloy semi-cylinders, and three upper, middle and lower sliding sleeve bosses 2 of the same size are arranged on its outer surface around the axis, and the upper and lower edges of the upper and lower two sliding sleeve bosses 2 There is a circular through hole A6 in the axial di...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
A self-adaptive vortex-induced vibration restraining device with wing-shaped ribbons comprises a sliding sleeve, a porous cover, a spoiler and the wing-shaped ribbons, wherein the sliding sleeve is connected and fastened outside a water insulation pipe through bolts; the sliding sleeve is sleeved with the porous cover through a positioning mandrel; and one end of the spoiler is connected with the porous cover, and the other end of the spoiler is provided with the wing-shaped ribbons. The porous cover can guide incoming flow to diffuse, the spoiler and the porous cover can freely rotate to adapt to different incoming flow directions, and the wing-shaped ribbons can wave continuously under the action of sea flow to restrain formation and expansion of vortexes. The self-adaptive vortex-induced vibration restraining device with the wing-shaped ribbons is simple in structure, capable of guiding incoming flow to diffuse, not prone to corrosion and damage and recyclable, and the service life of the water insulation pipe is prolonged.
Description
technical field [0001] The invention belongs to the technical field of marine engineering, in particular to a suppression device for suppressing vortex-induced vibration. Background technique [0002] During the exploitation of deepwater oil and gas fields, the marine riser connects the platform and the underwater wellhead to provide a safe channel for drilling fluid and formation fluid. The reliability of its service is of great significance to the safe operation of oil and gas drilling and production. The marine riser is located in a harsh environment, and the stress situation is complicated. When the sea current flows through the riser, a vortex will be formed behind the riser. During the formation and shedding process of the vortex, the velocity distribution of the sea current behind the riser will be changed, thereby inducing the vortex-induced vibration of the riser. When the frequency of vortex shedding is close to or equal to the natural frequency of the riser, reso...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/10E21B43/01
CPCE21B17/1078E21B43/01
Inventor 李子丰陈雁玲宋广明马建伟
Owner YANSHAN UNIV