Vortex-induced vibration suppression device with rotational variable-hole-diameter waved porous plates and vortex-induced vibration suppression method
A technology of vortex-induced vibration and suppression device, which is used in earth-moving drilling, fluid flow, drilling equipment, etc., can solve the problems of incoming flow direction and flow velocity sensitivity, etc., and achieve the effect of convenient installation
Inactive Publication Date: 2018-04-17
SOUTHWEST PETROLEUM UNIV
View PDF7 Cites 8 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, they are sensitive to the flow direction and flow velocity, and often can only exert their inhibitory effect under limited flow velocity and flow direction conditions.
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
specific Embodiment
[0021] When installing the device of the present invention, first assemble two rotating support frames 4, assemble the bearing inner ring 5, cylindrical roller 7, roller cage 8, and bearing outer ring 6 from inside to outside, and then assemble the cylindrical roller 7 and When the roller cage 8 is embedded in the bearing inner ring 5 and the bearing outer ring 6, lubricating oil is added to ensure the rotation performance of the rotating support frame 4; Frames 4 are fixed on the outer wall of standpipe 1 one by one up and down, and the inner screw holes of the upper and lower rotating support frames 4 support plates 9 are aligned. Place the four corrugated orifice plates 2 between the rotating support frames 4, screw the bolts into the inner screw holes of the support plate 9 of the rotating support frame 4 and the threaded holes of the corrugated orifice plates 2, and screw the four corrugated orifice plates 2 along the The standpipe 1 is fixed on the rotating support frame...
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
The invention relates to a vortex-induced vibration suppression device with rotational variable-hole-diameter waved porous plates and a vortex-induced vibration suppression method. Two rotary supporting frames fixedly sleeve the outer wall of a vertical pipe at an interval of the height of one waved porous plate, and the four waved porous plates are peripherally fixed at equal intervals to the rotary supporting frames along the vertical pipe. The ocean current impacts the waved porous plates to drive the whole device to rotate around the vertical pipe, the rotating waved porous plates continuously cut a flow field around the vertical pipe and induce the ocean current to generate vertical and radial flow adjustment along the surfaces of the waved porous plates, and the ocean current forms local jet flow when passing through turbulence holes, so that the flow field around the vertical pipe is further disturbed. Under joint action of rotary cutting, spatial flow adjustment and local jet flow, a vortex structure is damaged, and accordingly vortex-induced vibration suppression is realized.
Description
technical field [0001] The invention belongs to the technical field of laying marine riser facilities, and in particular relates to a vortex-induced vibration suppression device and method for a rotatable variable-aperture corrugated orifice plate. Background technique [0002] The offshore oil and gas reserves are abundant, and its exploration and development have extended from the shallow sea to the deep sea. Facing the harsh marine environment in the deep sea, the equipment for drilling and production operations has been severely challenged. The marine riser is the first to bear the brunt. As a key fluid channel connecting the seabed and the sea surface, its importance and safety are self-evident. Marine risers exposed to deep water for a long time are subjected to physical and chemical hazards such as the impact of ocean currents and corrosion of seawater. In particular, when the ocean current velocity is within a certain range, the vortex released from both sides of th...
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 Applications(China)
IPC IPC(8): E21B17/01F15D1/00
CPCE21B17/01F15D1/0025
Inventor 朱红钧胡昊李国民唐涛王柯楠
Owner SOUTHWEST PETROLEUM UNIV