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Reflux dual-purpose gustiness wind tunnel

A wind tunnel, dual-purpose technology, applied in the field of dual-purpose gust wind tunnels, can solve problems such as damage to fans, and achieve the effect of high airflow speed and low power

Pending Publication Date: 2019-05-24
GUODIAN ENVIRONMENTAL PROTECTION RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When conducting sand and dust experiments, the use of direct current suction and backflow will cause sand and gravel to be carried into the power section by the air flow and damage the fan. Only the open blowing wind tunnel is suitable for sand and dust tests.

Method used

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  • Reflux dual-purpose gustiness wind tunnel
  • Reflux dual-purpose gustiness wind tunnel
  • Reflux dual-purpose gustiness wind tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] The embodiment of the present invention proposes a backflow dual-purpose gust wind tunnel to realize gusts with high and low frequencies.

[0039] like figure 1 As shown, the backflow dual-purpose gust tunnel mainly includes the power and fan section 1, the first diffusion section 2, the split flow unit 13, the first backflow section 3, the stabilization and contraction section 4, the test section 5, and the second diffusion section 6 , the second backflow section 7. An air inlet 8 and an air intake valve 11 are arranged upstream of the power and fan section 1 , and an air outlet 9 and an air outlet valve 12 are arranged downstream of the second diffuser section 6 .

[0040] The power and fan section 1, the first diffuser section 2, the splitter unit 13, the first return section 3, the stabilization and contraction section 4, the test section 5, the second diffuser section 6 and the second return section 7 can adopt an all-steel structure.

[0041] A deflector unit 10...

Embodiment 2

[0056] In this embodiment of the present invention, the outlet valve 12 and the intake valve 11 in Example 1 are replaced by two closed doors on the inner and outer surfaces of the second recirculation section 7, and the conversion of the wind tunnel opening and closing is carried out by controlling the opening and closing of the closed doors. This backflow gust wind tunnel is mainly connected in turn by the following sections to form a closed circuit, including: power and fan section 1, first diffusion section 2, first backflow section 3, stabilization and contraction section 4, test section 5, and second diffusion section 6 And the second backflow section 7.

[0057] like Figure 5 As shown, a first closed door 18 is provided on the outer surface of the second return section 7 , and a second closed door 19 is provided on the inner surface of the second return section 7 . Both the first closed door 18 and the second closed door 19 are solid doors. The power section and the ...

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Abstract

The invention discloses a reflux dual-purpose gustiness wind tunnel which is technically characterized in that distribution units are arranged at a first reflux section and a first diffusion section,flow deflector units are arranged at connecting corners of two sides of a second reflux section, opening and closing doors are arranged at two ends of the inner wall and the outer wall of the second reflux section, the wind tunnel runs in a closed-circuit manner when the opening and closing doors at the two ends of the second reflux section are simultaneously closed, the wind tunnel runs in an open-circuit manner when the opening and closing doors at the two ends of the inner wall and the outer wall of the second reflux section are simultaneously opened, the distribution units can be loaded atthe moment, so that part of airflow flows towards the outside through the distribution units, the discharge rate of the airflow at the distribution units towards the outside is controlled by rotationof a shutter door, and the wind speed of a wind tunnel test section is instantaneously changed.

Description

technical field [0001] The invention belongs to a wind tunnel experiment device, and relates to a backflow dual-purpose gust wind tunnel. Background technique [0002] Boundary layer wind tunnels are playing an increasingly important role in the research of wind engineering. The boundary layer wind tunnel has the ability to simulate the flow of the atmospheric boundary layer, and can provide technical support for the study of the diffusion law of atmospheric pollutants and the safety design research of many other unique structures such as long-span bridges, high-rise buildings, and towers. [0003] However, for some extreme meteorological events (such as gust fronts, hurricanes, etc.) when the unsteady airflow plays a dominant role, ordinary boundary layer wind tunnels lack the ability to simulate the transient effects of these events. Therefore, there is a need for an atmospheric boundary layer wind tunnel capable of generating gust effects. [0004] In order to make the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/04
Inventor 田文鑫姚增权徐振孙雪丽马进王冠
Owner GUODIAN ENVIRONMENTAL PROTECTION RES INST CO LTD
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