Underwater stand pipe vortex induced vibration inhibiter adopting rotatable cowling
A technology of rotating rectification and vortex-induced vibration, which is applied in the direction of fluid flow, drill pipe, casing, etc., to achieve the effects of increasing the scope of use, suppressing vortex-induced vibration, and simple and convenient manufacturing and installation
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[0017] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.
[0018] Such as figure 1 , figure 2 , image 3 , Figure 4 with Figure 5 As shown, the present invention includes a pair of rotating modules, a fairing fixing pad 5 and a fairing 6.
[0019] The rotating module includes a rotating module fixing member 2, a rotating module rotating member 3, a roller 10, and an axial stop piece 4. The rotating module fixing part 2 is composed of two symmetrical half-ring steel members. The inner diameter of the rotating module fixing part 2 is equal to the outer diameter D of the riser 1, and the thickness of the inner and outer diameters is 0.12D to 0.14D. The top surface is uniformly processed with rollers. Sub slot 7. The rotating module fixing part 2 is sleeved on the riser 1 from both sides, and is connected and fixed by bolts 9. The diameter of the roller 10 is 0.5 to 0.8 times the thickness of the in...
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