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Wind tunnel flow field mobile measurement device

A technology of mobile measurement and wind tunnel, which is applied in the field of wind tunnel test, can solve the problems of complex mechanical structure and control system, excessive mechanism blockage, cumbersome installation process, etc., and achieve simple and convenient installation process, reduce blockage, and structure simple effect

Active Publication Date: 2021-06-25
INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the mobile measurement devices commonly used in wind tunnels mostly adopt the structure of "movable guide rail + mobile bent frame" or "gantry" frame structure. The guide rail or the gantry frame needs to be installed inside the wind tunnel, and the blockage degree of the mechanism is relatively large. In addition, in order to ensure sufficient structural strength when the incoming flow velocity of the wind tunnel is high, the size of each part of the device is also relatively large. There are many limitations in hole application

Method used

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  • Wind tunnel flow field mobile measurement device
  • Wind tunnel flow field mobile measurement device
  • Wind tunnel flow field mobile measurement device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This embodiment is an application mode when a single probe is installed at the front end of the device.

[0050] Such as Image 6As shown, in this embodiment, a single probe 13 is fixedly connected to the head installation interface 1, and the pressure measurement pipeline or power line extends to the rear side of the device through the wiring groove 11 and the pipeline groove 12 of the axially moving substrate 2, And extend out the test section through the isolation seam on the rear side of the scimitar mechanism in the wind tunnel, and connect with the pressure measuring equipment or the power supply. Drive the gear 7 to rotate through the reducer motor 10, and drive the rack 8 to move back and forth in the axial direction, thereby realizing the forward and backward movement of the axially moving substrate 2, so that a single probe 13 can complete the flow field measurement at different positions of the central axis of the test section .

Embodiment 2

[0052] This embodiment is an application mode when a measuring bent frame is installed at the front end of the device.

[0053] Such as Figure 7 As shown, in this embodiment, five probes 13 are installed on the measuring bent frame 14 at the same interval, and the measuring bent frame 14 is fixedly connected to the head mounting interface 1, and the pressure measuring pipeline or power line moves the substrate through the axial direction. The wiring groove 11 and the pipeline groove 12 of 2 extend to the rear side of the device, and extend out of the test section through the wire groove on the rear side of the scimitar mechanism of the wind tunnel, and are connected with the pressure measuring equipment or the power supply. The motor 10 of the reducer drives the gear 7 to rotate, and drives the rack 8 to move back and forth in the axial direction, thereby realizing the axial movement of the substrate 2 in the axial direction. The five probes 13 installed on the measuring bent...

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Abstract

The invention discloses a wind tunnel flow field mobile measurement device. The wind tunnel flow field mobile measurement device comprises a fixed part, a driving part and a moving part, wherein a machete connecting bracket of the fixing part is fixed on a wind tunnel machete mechanism; an output shaft of a speed reducer motor of the driving part is fixedly connected with a gear positioned above a speed reducer base; a rack meshed with the gear is mounted on a moving axial moving base plate of the moving part; the speed reducer motor drives the gear, the gear is meshed with the rack, and the rack drives the axial moving base plate to move front and back in the axis direction. The speed reducer motor of the device is located behind the wind tunnel machete mechanism, and the blocking degree of the mechanism can be effectively reduced. The wind tunnel flow field mobile measurement device is simple in structure, convenient to install, small in blockage degree in a wind tunnel and capable of moving back and forth in the axial direction of the wind tunnel, different measuring instruments can be installed at the head installation interface of the axial moving substrate according to needs, and the device can be used as a supporting mechanism of a model for carrying out a wind tunnel test besides wind tunnel dynamic and static flow field calibration, and has universality.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel tests, and in particular relates to a device for measuring movement of a wind tunnel flow field. Background technique [0002] The wind tunnel test has extremely high requirements on the uniformity of the spatial flow field. Since the quality of the flow field can directly affect the quality of the test data, in order to ensure accurate and reliable test results, the flow field in the test section must be detected by a reasonable measurement method before the test. quality, and obtain the distribution range of the uniform area of ​​the flow field. Generally speaking, the flow field calibration test will be carried out after the completion of the construction of the wind tunnel and major equipment transformation. Even under normal circumstances, the flow field calibration test should be carried out regularly to ensure the stability of the flow field during the use of the wind tunnel. Reliable ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M9/06G01M9/04
CPCG01M9/06G01M9/04
Inventor 郭鹏闫昱吕彬彬石洋查俊寇西平张昌荣郭洪涛曾开春张汇卓余立杨兴华
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT