抑制围护结构振动的浮动体设备

• Format: Patent
• Language: Chinese
• Published: 26.04.2019
• Subjects: BLASTING; HEATING; LIGHTING; MACHINES OR ENGINES FOR LIQUIDS; MECHANICAL ENGINEERING; OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR; PRODUCING MECHANICAL POWER; WEAPONS; WIND MOTORS; WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS

本发明公开种抑制围护结构振动的浮动体设备，包括环绕所述围护结构的浮动体，以及能够激发所述浮动体上下浮动的激发装置；所述激发装置包括连接所述浮动体以使其不脱离所述围护结构的系绳。当浮动体上下浮动时，可破坏塔筒外壁的气流边界层，直接抑制涡激振动的成因；另外，获得气动外形的变化，使得空气动力系数C变小(降低顺风向振动振幅)，也可以降低涡激共振振幅A；浮动体上下浮动对附近流场的上、下段均进行了扰乱破坏，由此打乱了浮动体附近上风向气流的相关性，相应地即打乱了浮动体和其他位置气流旋涡脱落频率的致性，从而使得它们共同作用削弱，也就阻止了塔筒涡激诱发的振动。 A floating body device for suppressing vibration of enclosure includes a floating body surrounding the enclosure and an excitation device which can excite the floating body to float up and down. The excitation device includes a tether connected to the floating body to prevent the floating body from falling off from the enclosure. When the floating body floats up and down, an airflow boundary layer on an outer wall of a tower can be destroyed, and a cause of vortex-induced vibration can be directly suppressed. In addition, a change of an aerodynamic configuration is obtained, to decrease an aerodynamic coefficient C (decrease a vibration amplitude in a downwind direction), and also reduce an amplitude A of a vortex-induced resonance. The up