Device for automatically identifying number of wind tunnel nozzle

An automatic identification and wind tunnel technology, which is applied in the direction of measuring device, aerodynamic test, machine/structural component test, etc., to achieve the effect of low maintenance cost, convenient installation and strong practicability

Inactive Publication Date: 2017-03-22
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a device for automatically identifying the number of the nozzle of the wind tunnel, which solves the problem that during the preparation process of the wind tunnel test, after the replacement of the nozzle is completed, the personnel in the main control room of the wind tunnel must walk to the site again to confirm whether the replacement of the nozzle is correct , can reduce the inefficiency and identification errors caused by human operation, and greatly improve the efficiency of wind tunnel test operation. At the same time, the non-contact switch element adopted is simple in structure, not easy to damage, and has strong practicability

Method used

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  • Device for automatically identifying number of wind tunnel nozzle

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Embodiment Construction

[0017] Such as figure 1 As shown, the present invention provides a device for automatically identifying the serial number of a wind tunnel nozzle, which is characterized in that it includes a magnet seat 1, magnets 2-1, 2-2, 2-3, 2-4, Hall switch seat 3, and Hall switch seat 3. Seoul switch 4-1, 4-2, 4-3, 4-4;

[0018] Install the Hall switch seat 3 on the side wall of the docking flange of the front chamber of the wind tunnel, and install four Hall switches 4-1, 4-2, 4-3, 4-4 on the Hall switch seat 3, and connect them through lead wires To the wind tunnel measurement and control system; a magnet base 1 is installed on the side wall of the wind tunnel nozzle butt flange, and there are 4 magnet holes in the magnet base 1, and magnets 2-1, 2-2, 2-3, 2- are placed in the holes 4. When the nozzle is not docked with the front chamber, the four Hall switches 4-1, 4-2, 4-3, 4-4 are in an open circuit state; when the nozzle is docked with the front chamber, the magnets 2-1, 2-2, 2-...

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Abstract

The invention discloses a device for automatically identifying the number of a wind tunnel nozzle. The device comprises a magnet base, magnets, a Hall switch base and Hall switches. The Hall switch base is installed on the side wall butt joint with a flange of a wind tunnel prechamber. The four Hall switches are installed on the Hall switch base and are connected to a wind tunnel measurement and control system through leads. The side wall butt joint with a flange of a wind tunnel is provided with the magnet seat, the magnet seat is internally provided with four magnet holes, and the magnets are located in the magnet holes. The wind tunnel measurement and control system determines the nozzle state and then automatically adjusts the state parameter setting of the wind tunnel testing, so that the wind tunnel testing efficiency is greatly improved, and the Hall switches are non-contact switching elements and are featured by being not easy to damage, simple in structure, convenient to install, and low in use and maintenance cost.

Description

technical field [0001] The invention relates to the field of test devices in wind tunnel tests. It mainly uses the wind tunnel measurement and control system to automatically read the number of the defined wind tunnel nozzle, and automatically adjusts the wind tunnel test according to the different Mach numbers corresponding to the number of the wind tunnel nozzle. The relevant test parameters can be used to improve the efficiency of wind tunnel tests. Background technique [0002] The wind tunnel nozzle is the core device for establishing different velocity flow fields in the wind tunnel. Its main function is to uniformly and stably accelerate the airflow to the design Mach number by changing the geometry of the inner wall of the nozzle. At present, solid-wall nozzles are mostly used in supersonic wind tunnels. Nozzles with different Mach numbers correspond to different inner wall profiles. Generally, a supersonic wind tunnel is equipped with 6 to 10 nozzles. In order to o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/04G01M9/06
CPCG01M9/04G01M9/06
Inventor 袁雄李世强赵顺友吴晋鹏
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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