A kind of composite liquid damper and using method
A liquid damping and damper technology, which is applied in the direction of building type, machine/engine, shockproof, etc., can solve the problems of occupying a large structural space and the narrow applicable frequency band of damper vibration reduction, and achieve a wide range of vibration reduction frequencies and save installation space Effect
Active Publication Date: 2020-10-02
SHANGHAI ELECTRIC WIND POWER GRP CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to solve the problem that the applicable frequency band of the damper for vibration reduction in the prior art is narrow and the structural space is relatively large
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[0047]The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer" and the like are based on the orientation or positional relationship shown in the accompanying drawings, and are only for It is convenient to describe the present invention and simplify the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a s...
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The invention discloses a composite type liquid damper. The composite type liquid damper comprises a damper shell, a hemispherical liquid tank, a multi-layer arc-shaped liquid tank, a multi-layer cylindrical liquid tank and a bottom annular liquid tank, wherein the hemispherical liquid tank, the multi-layer arc-shaped liquid tank, the multi-layer cylindrical liquid tank and the bottom annular liquid tank are arranged inside the damper shell; and the bottom of the damper shell is fixedly connected with an object to be subjected to vibration reduction. The composite type liquid damper is composed of a plurality of liquid tanks of geometric structures, and thus an installation space on a high-rise structure is saved; and the damper is provided with annular partition plates to divide the multi-layer arc-shaped liquid tank into a plurality of annular independent compartments. The flexible adjustment of the operating frequency of each compartment is realized by combining different attributeliquid in each compartment, so that the composite type liquid damper has a wide range of vibration reduction frequency.
Description
technical field [0001] The invention relates to the field of shock absorption of towering structures, in particular to a composite liquid damper and a use method thereof. Background technique [0002] At certain speeds, wind blowing over any bluff structure will alternately generate vortices on either side of the structure and break away from the surface of the structure. For towering structures (such as wind turbine towers, super high-rise buildings, etc.), the pressure difference induced by the alternating vortices on the surface of the structure will lead to periodic vibration of the structure. The natural frequency is close to the emission frequency of the vortex, which will cause resonance damage to the structure. In order to avoid catastrophic damage to structures caused by such vortex-induced vibrations, the method often adopted in engineering is to install suitable dampers on structures. Among them, the liquid damper has the advantages of simple structure and low c...
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IPC IPC(8): E04H9/02E04B1/98F03D80/00
CPCE04H9/02F03D80/00Y02E10/72
Inventor 张友林蒋勇李华祥张天明曹广启季剑
Owner SHANGHAI ELECTRIC WIND POWER GRP CO LTD