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Active feathering type chimney enclosure structure capable of resisting strong wind and operation method

An enclosure structure, feathering technology, applied in the direction of protective buildings/shelters, towers, building types, etc., can solve the problems of low natural vibration frequency, dense distribution, large flexibility, etc. The effect of reducing downwind wind loads and reducing the likelihood of failure

Pending Publication Date: 2022-07-29
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention found that the height of the current chimney has reached the order of 200 meters. It has the characteristics of large flexibility, small damping, extremely low natural frequency and dense distribution. It is a typical wind-sensitive structure. The chimney structure was destroyed in a strong typhoon. Not uncommon, and vortex-induced resonance phenomenon occurs under wind conditions of a specific Stroller number

Method used

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  • Active feathering type chimney enclosure structure capable of resisting strong wind and operation method
  • Active feathering type chimney enclosure structure capable of resisting strong wind and operation method
  • Active feathering type chimney enclosure structure capable of resisting strong wind and operation method

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Embodiment 1

[0044] Embodiment 1 of the present invention provides an active feathering type chimney enclosure structure capable of resisting strong winds, including:

[0045] It is used to set a plurality of leaf element enclosures on the outside of the chimney and a plurality of slide rails that are set on the outside of the chimney. two slides;

[0046] The blade element enclosure structure is streamlined, the top of the blade element enclosure structure is provided with a first pulley group matched with the first slideway, and the bottom of the blade element enclosure structure is provided with a second pulley group matched with the second slideway .

[0047] It can be understood that, in some other embodiments, each slide rail includes a first sub-track with an opening facing upward and a second sub-track with an opening facing downward, and the first sub-track and the second self-track are fixed away from the track; The enclosure structure is streamlined, the top of the blade eleme...

Embodiment 2

[0061] Embodiment 2 of the present invention provides an operation method for an active feathering type strong wind-resistant chimney enclosure structure, using the active feathering type strong wind-resistant chimney enclosure structure described in Embodiment 1 of the present invention, including:

[0062] When encountering strong winds, the blade element enclosures of each streamline body can slide relative to each other according to their own aerodynamic effects, and each segmented blade element enclosure can actively pitch in the wind. So that each leaf element always maintains the feathering state of the wind direction.

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Abstract

The invention provides an active feathering type strong-wind-resistant chimney enclosure structure and an operation method, and belongs to the technical field of chimney protection.The chimney enclosure structure comprises a plurality of blade element enclosure structures used for being arranged on the outer side of a chimney in a sleeving mode and a plurality of sliding rails used for being fixedly arranged on the outer side of the chimney in a sleeving mode; each slide rail comprises a first slide way with an upward opening and a second slide way with a downward opening; the blade element enclosure structure is in a streamline body shape, the top of the blade element enclosure structure is provided with a first pulley block matched with the first sliding way, and the bottom of the blade element enclosure structure is provided with a second pulley block matched with the second sliding way. According to the invention, the streamline body appearance is adopted, so that vortex shedding is not generated when wind flows through the surface of the blade element, the transverse wind load generated by vortex shedding is effectively reduced, and the vortex-induced resonance phenomenon can be avoided.

Description

technical field [0001] The invention relates to the technical field of chimney protection, in particular to an active feathering type chimney enclosure structure capable of resisting strong wind and an operation method. Background technique [0002] The statements in this section merely provide background related to the present disclosure and do not necessarily constitute prior art. [0003] At present, power resources play an irreplaceable role. Although new clean energy power generation methods such as photovoltaic power generation, wind power generation, and tidal power generation have emerged, power resources are still mainly obtained through thermal power generation at this stage. In a thermal power plant, a chimney is a structure that provides ventilation for the hot flue gas or smoke of the boiler. Its safety performance is not only directly related to the safety of surrounding buildings, but once the chimney is damaged, it will seriously affect the normal operation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04H12/28E04H12/18E04H9/14
CPCE04H12/28E04H12/18E04H9/14
Inventor 刘兵李旭徐俊祥孙晓红王君鹏
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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