A vortex-induced vibration suppression device and method for deploying a flow around to drive a rotating rod to rotate
A technology of vortex-induced vibration and suppression device, which is applied in the directions of fluid flow, drill pipe, earth-moving drilling, etc.
Inactive Publication Date: 2019-05-03
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
[0004] The problem to be solved by the present invention is to address the shortcomings of the existing vortex-induced vibration suppression devices for marine risers, and propose a vortex-induced vibration suppression device and method that integrates the advantages of active and passive control and has no energy consumption to drive the rotating rod to rotate around the flow.
Method used
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Embodiment
[0030] When the device of the present invention is installed, a sub-module installation method is adopted. Install the rotating parts first, such as Figure 4 As shown, four T-shaped slide buckles 10 with braces are screwed into the channel of T-shaped chute 9, and then T-shaped chute 9 is fixed on the outer wall of standpipe 1 through bolt connection, and the upper and lower parts of the rotating parts The distance between the two rotating modules is determined by the position of the threaded hole on the perforated wind deflector 2 that is matched with the thread at the end of the strut of the T-shaped slider 10 .
[0031] Then, the transmission system is installed on the diversion case. Since the diversion case and the transmission system are distributed symmetrically about the standpipe 1, a pair of transmission rotating rods are installed on each half of the diversion case. Such as figure 2 As shown, the connecting rod 15 is passed through the through hole on the perfor...
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The invention relates to a vortex-induced vibration restraining device and method for driving a rotating rod to rotate through detour flow allocation. The vortex-induced vibration restraining device is composed of three parts of a rotating part, a flow guiding cover shell and a transmission system. The rotating part is composed of a T-shaped sliding groove and a T-shaped sliding buckle with a supporting rod, and takes charge of rotating of the whole device. The flow guide cover shell is composed of a trepanning flow guiding cover and a direction adjusting tail plate. The transmission system iscomposed of two pairs of transmission rotating rods and matched transmission screw rods, gears, bearing seats and connection rods. Under the joint effect of flow rate allocation at an inflow port ofthe trepanning flow guiding cover of the vortex-induced vibration restraining device, rotating and shearing of a driven rotating rod, jet flowing at an outflow port of the trepanning flow guiding cover and dividing of a wake flow area by the direction adjusting tail plate, the total flow rate of external detour flow is decreased, the separation point of a detour flow boundary layer is delayed, theformed length of vortex is lengthened, and the width of wake is smaller, and thus vortex-induced vibration restraining without energy consumption is achieved.
Description
technical field [0001] The invention belongs to the technical field of laying of marine riser facilities, and in particular relates to a vortex-induced vibration suppression device and method for deploying and driving a rotating rod around a flow to rotate. Background technique [0002] At present, my country's onshore oil and gas resources have long been in short supply, and the dependence on foreign oil and gas continues to rise, highlighting the energy crisis. Vigorously developing offshore oil and gas resources is one of the key measures to alleviate this crisis. The marine riser is the core pipeline from the seabed oil and gas wellhead to the sea surface storage and processing facilities, and plays a vital role in the development of offshore oil and gas resources. With the deepening of offshore oil and gas development, the offshore riser is placed in a complex marine environment. On the one hand, it is affected by the vortex-induced vibration of waves and currents, whi...
Claims
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IPC IPC(8): E21B17/01F15D1/00
CPCE21B17/01F15D1/006
Inventor 朱红钧唐涛李国民胡昊王柯楠
Owner SOUTHWEST PETROLEUM UNIV