A device and method for suppressing vortex-induced vibration of a standpipe with an umbrella-supported adjustable-spacing streamline column
A technology of vortex-induced vibration and suppression device, applied in the direction of fluid flow, drill pipe, casing, etc., can solve the problems of weak adaptability, inability to cope with marine environment, fixed structure, etc., to slow down vortex-induced vibration and enhance environmental adaptability Effect
Inactive Publication Date: 2018-09-18
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology
However, most of these vortex-induced vibration suppression devices cannot cope with the frequently changing marine environment, and the structure is fixed and the adaptability is weak
Method used
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[0020] When installing the device, the casing 2 is set outside the standpipe 1, coaxial with the standpipe 1, and there is no relative sliding between the standpipe 1 and the standpipe 1. The lower collar 4 is sleeved on the lower end of the casing 2, and the internal thread on the inner wall thereof is engaged with the external thread on the lower end of the casing 2. The upper collar 3 is set on the upper end of the sleeve 2, and can slide relative to the sleeve 2, and the hinge 13 and the lug 5 of the upper collar 3 and the lower collar 4 correspond vertically uniformly. Between the two corresponding ear seats 5 of the upper collar 3 and the lower collar 4, the screw rod 7 connected to the motor 6 at the lower end is arranged, so that the two screw rods 7 are parallel to the axis of the casing 2, and the motor 6 is fixed on the ear seat of the lower collar 4 5, the screw rod 7 upper end stretches out the screw hole of the upper collar 3 lugs 5. The hinge 13 in the middle o...
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The invention relates to a vertical pipe vortex induced vibration suppressing device with umbrella-supporting type distance-adjustable streamline columns and its application method. The device for suppressing vortex induced vibration of vertical pipe of umbrella-supporting type adjustable distance streamline column is composed of an axial telescopic module, eight supporting frames and eight rotating units. The support frame is respectively connected with an upper ring sleeve of the axial telescopic module and a lower ring sleeve of the axial telescopic module through a pull rod and a support rod and the rotating unit is embedded in the support frame. Under the impact of ocean current, the streamline columns swing back and forth; in the combined action of the interference of the support frame, the pull rod and the supporting rod, the flow field around the riser is destroyed, and the formation and development of vortices are suppressed, so that the vibration suppression is realized; moreover, the screw rotation drives the upper collar to slide in the sleeve, and changes the distance between the streamline column and the sleeve pipe and the space position of the pull rod and the supporting rod.vertical pipe vortex induced vibration suppressing device with umbrella-supporting type distance-adjustable streamline columns and its application method are capable of dealing with ocean currents with different flow rates so as to achieve the best suppression effect.
Description
technical field [0001] The invention belongs to the technical field of laying of marine riser facilities, and in particular relates to a device and method for suppressing vortex-induced vibration of a standpipe with an umbrella-supported adjustable distance streamline column. Background technique [0002] The development and exploitation of offshore oil and gas resources has become one of the important measures to alleviate the national energy strategic crisis, and the pace of advancing to deep water has quietly accelerated. However, deep-sea oil and gas development relies on a large number of umbilical cables such as risers and risers, and the cost of these umbilical cables often accounts for more than half of the cost of the entire deep-sea mining system. Therefore, the safe service performance of the umbilical is of great significance for deepwater oil and gas production. The deepwater riser has a relatively large slenderness and outstanding flexibility. In the complex ...
Claims
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IPC IPC(8): E21B17/01F15D1/00
CPCE21B17/01F15D1/002
Inventor 朱红钧李帅王萌萌颜知音
Owner SOUTHWEST PETROLEUM UNIV