Direct-reflux rapid switching device for large-scale environment wind tunnel

A fast switching and environmental technology, applied in measurement devices, instruments, aerodynamic tests, etc., can solve problems such as the inability to connect the intake and exhaust ports, the large space occupied by the wind tunnel, and the heavy weight of the corner section.

Active Publication Date: 2021-04-23
中国空气动力研究与发展中心设备设计及测试技术研究所
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method will cause the wind tunnel to occupy a large space, cannot be connected with the intake and exhaust ports, and the weight of ...

Method used

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  • Direct-reflux rapid switching device for large-scale environment wind tunnel
  • Direct-reflux rapid switching device for large-scale environment wind tunnel
  • Direct-reflux rapid switching device for large-scale environment wind tunnel

Examples

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Embodiment Construction

[0029] Attached below Figure 1-6 The present invention is further described with embodiment:

[0030] A direct-return fast switching device for a large-scale environmental wind tunnel, comprising an intake section 1, a second corner section 5, a straight section 9, a first corner section 11, and an exhaust section 15 welded in sequence, the intake section 1, The second corner section 5, the straight section 9, the first corner section 11 and the exhaust section 15 are respectively provided with a split sealing working door I2, a split working door I7, a split working door II10 and a split sealing working door II14 , when the four working doors are fully opened, the air flow surface is flush with the flow channel of the cave body. When conducting the direct current test, the airflow enters the flow channel through the inlet section 1 and the second corner section 5, and is discharged into the atmosphere through the first corner section 11 and the exhaust section 15, and the c...

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PUM

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Abstract

The invention provides a direct-reflux quick switching device for a large-scale environmental wind tunnel, which is characterized in that each of an oppositely-opened sealing working door I, an oppositely-opened working door I, an oppositely-opened working door II and an oppositely-opened sealing working door II consists of two doors, the upper end of each door is provided with a driving end, and the driving end is connected with a driving mechanism for driving the driving end; a driven end is arranged at the lower end of each door, a self-aligning thrust bearing used for bearing the weight of the door body is arranged at the driven end, a corner flow deflector assembly I is rotatably connected into a second corner section, and a corner flow deflector assembly II is slidably connected to the inner walls of the straight section and the first corner section; according to the invention, in an environmental wind tunnel with a narrow installation space, a temperature change range of -10 DEG C to 95 DEG C and high sealing requirements, the switching of direct reflux test modes is realized by reasonably arranging four pairs of working doors and adjusting the angles and positions of the corner flow deflector assemblies I and the corner flow deflector assemblies II according to the airflow flowing direction of the environmental wind tunnel.

Description

technical field [0001] The invention relates to the technical field of ground simulation tests, in particular to a direct-backflow fast switching device for a large-scale environmental wind tunnel. Background technique [0002] In the environmental wind tunnel simulation test involving a wide temperature range and high sealing requirements, according to different test conditions, the wind tunnel needs to have a direct current / return flow mode, that is, the wind tunnel flow channel can switch between direct and return flow, and the environmental wind tunnel is performing return flow The simulation test involves temperature, sealing and flow field requirements. During the DC simulation test, the flow channel loss should be minimized, and it can be automatically switched during the simulation test of both DC and reflux. Usually, the temperature involved in the environmental wind tunnel is not high, there are no strict sealing requirements and space restrictions, and the followi...

Claims

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Application Information

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IPC IPC(8): G01M9/04
CPCY02E10/72
Inventor 虞择斌王睿高鑫宇蔡清青谢强万稳宋道军
Owner 中国空气动力研究与发展中心设备设计及测试技术研究所
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