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Chimney suspension inner cylinder passive frequency modulation damping vibration attenuation shake-stopping device and chimney
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A damping and inner cylinder technology, applied in friction shock absorbers, building types, buildings, etc., can solve the problems of increased wind load, inability to install TMD or TLD, large external dimensions, etc., to achieve easy replacement and improved vibration reduction effect , the effect of small size
Active Publication Date: 2021-06-01
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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Abstract
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Problems solved by technology
TMD or TLD cannot be installed inside the flue of a self-supporting chimney; the TMD or TLD device installed outside the chimney will increase the wind load at this stage due to its large size
Method used
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Embodiment 1
[0052] In a typical embodiment of the present invention, such as figure 1 As shown, a passive frequency modulation damping, vibration reduction and anti-sway device for hanging the inner cylinder of a chimney is proposed, which includes a damping and anti-sway structure 1000 .
[0053] Such as Figure 2-Figure 6 As shown, according to the embodiment of the present invention, the damping and anti-sway structure 1000 includes a damper 300, an outer cylinder side damper connector 400 (ie, the first connector), an inner cylinder side damper connector 500 (the second connector ), one end of the damper 300 is connected to the damper connector 400 on the outer cylinder side, and the other end of the damper 300 is connected to the damper connector 500 on the inner cylinder side.
[0054] Such as image 3 , Figure 4 As shown, the damper includes a rotating main board 1, a corrugated brass friction plate 2, a corrugated brass friction plate 3, a pre-tightening high-strength bolt 4, ...
Embodiment 2
[0073] A chimney is proposed in this embodiment, as figure 1 As shown, it includes an outer cylinder 100, an inner cylinder 200, and the above-mentioned vibration damping and anti-sway device.
[0074] The axes of the outer cylinder and the inner cylinder are arranged in parallel, the inner cylinder is placed inside the outer cylinder, and one or more inner cylinders can be selectively installed. In this embodiment, there are two inner cylinders, and the two inner cylinders are arranged at intervals outside inside the barrel.
[0075] The outer cylinder is a reinforced concrete chimney outer cylinder, and the inner cylinder is a section-suspended frequency-tuned steel inner cylinder.
[0076] The inner cylinder is generally divided into two sections, and the suspension length of the sections and the rotational stiffness of the suspended platform beam should be adjusted according to the first and second vibration modes of the outer cylinder, so that the natural vibration frequ...
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Abstract
The invention discloses a chimney suspension inner cylinder passive frequency modulation damping vibration attenuation shake-stopping device and a chimney. The chimney suspension inner cylinder passive frequency modulation damping vibration attenuation shake-stopping device comprises a damping shake-stopping structure, and the damping shake-stopping structure comprises a damper. The damper comprises a plurality of rotating main plates and a plurality of rotating auxiliary plates, the first ends of the rotating main plates are connected with the first ends of the rotating auxiliary plates through fastening connecting pieces, the rotating main plates and the rotating auxiliary plates are sequentially connected to the fastening connecting pieces in a staggered mode, and the rotating main plates and the rotating auxiliary plates intersect to form a set angle.
Description
technical field [0001] The invention belongs to the technical field of vibration damping of a suspended inner cylinder chimney for thermal power generation, and in particular relates to a passive frequency modulation damping vibration reduction and anti-sway device for a chimney suspended inner cylinder and a chimney. Background technique [0002] The statements herein merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] Large-scale thermal power plants can be as high as 200-300m, and the tallest chimney in the world is located in Kazakhstan, with a height of 400m. Wind-induced and earthquake damage are common in towering chimneys, and usually the first and second mode shapes play a controlling role. [0004] At present, steel inner tube sleeve type or multi-pipe chimneys are often used. The steel inner tube is the exhaust tube, and the reinforced concrete outer tube is the main stress structure. A stee...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/04E04H12/28
CPCF16F7/04E04H12/28
Inventor 徐俊祥李旭刘兵张兰春孙晓红申加胜董斌王君鹏安春国时玲云李国静陈瑛
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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