Supersonic flow calibration large-stroke single-point displacement measurement device for wind tunnel and wiring method

A technology of supersonic flow and large stroke, which is applied in the direction of measuring devices, testing of machines/structural components, instruments, etc., and can solve problems such as air flow disorder, harsh working environment, and high frequency of use of single-point moving measurement devices

Pending Publication Date: 2020-10-27
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

However, the airflow in the wind tunnel is turbulent, the working environment is very harsh and the frequency of use of the single-point moving measurement device is relatively high. method presents great challenges

Method used

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  • Supersonic flow calibration large-stroke single-point displacement measurement device for wind tunnel and wiring method
  • Supersonic flow calibration large-stroke single-point displacement measurement device for wind tunnel and wiring method
  • Supersonic flow calibration large-stroke single-point displacement measurement device for wind tunnel and wiring method

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Experimental program
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Effect test

Embodiment 1

[0042] Embodiment 1: A large-stroke single-point moving measurement device for supersonic flow in a wind tunnel, such as Figure 1 to Figure 6 As shown, it includes a wind tunnel wall plate 15, a tail support 9, a main support 11, an actuator and a pressure measuring part. The tail support 9 and the main support 11 are fixedly connected with the wind tunnel wall plate 15, and the actuator is a servo electric cylinder 2. The electric cylinder 2 is fixed on the tail support 9 and the main support 11 , and the piston rod of the servo electric cylinder 2 is close to the main support 11 . A connection section 5 is fixedly connected to the end of the piston rod of the servo electric cylinder 2 . The end of the connection section 5 away from the servo electric cylinder 2 is connected with a probe adapter section 6 . The pressure measuring part is installed at the end of the probe adapter section 6 away from the connection section 5 . The pressure measuring part includes a total pre...

Embodiment 2

[0059] Embodiment 2: A wiring method for a wind tunnel supersonic flow correction large-stroke single-point moving measurement device, such as Figure 7 shown, including the following steps:

[0060] S1. Install the protective tube 18, and pass the two measuring pipelines 10 connecting the total pressure probe 7 and the static pressure probe 8 through the protective tube 18 to ensure that the measuring pipeline 10 bears the load and the worn part is covered with the protective tube 18, wherein the protective tube 18 The surface is smooth, wear-resistant and rigid.

[0061] S2. Determine the pipeline wiring position of the single-point moving measurement device, drill wiring holes on the wind tunnel wall plate 15, and install the wear-resistant sliding sleeve 14 and the pulley block mechanism 13.

[0062] S3, pipeline wiring, the measuring pipeline 10 connected with the total pressure probe 7 and the static pressure probe 8 is wound around the outer wall of the piston rod of t...

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Abstract

The invention discloses a large-stroke single-point displacement measuring device for wind tunnel supersonic flow calibration and a wiring method, and relates to the technical field of wind tunnel supersonic flow field calibration. The large-stroke single-point displacement measuring device is characterized by comprising a wind tunnel wall plate, a tail support, a main support, an executing mechanism, a connecting section, a probe switching section and a pressure measuring part, wherein the executing mechanism is a servo electric cylinder, the pressure measuring part comprises a total pressureprobe and a static pressure probe, the total pressure probe and the static pressure probe are connected with a measuring pipeline, the measuring pipeline is fixedly wound with a piston rod of the servo electric cylinder, and the measuring pipeline is connected with a balance weight located outside the wind tunnel. According to the single-point moving measurement device, the stroke of the executing mechanism is increased, the measurement area is wider, the measurement pipeline wiring structure of the device is simple, cost is low, wiring of the measurement pipeline is close to the device, theinterference of turbulent airflow in a wind tunnel on the measurement pipeline is reduced, the blockage degree of the device is reduced, and the device is economical and practical, meanwhile, the device is high in position control precision, more reliable in measurement data and convenient to operate and maintain.

Description

technical field [0001] The invention relates to the technical field of supersonic flow field calibration in a wind tunnel, and more specifically, relates to a large-stroke single-point moving measurement device and a wiring method for supersonic flow calibration in a wind tunnel. Background technique [0002] The single-point moving measurement device is an indispensable tool in the verification of the supersonic flow field in the wind tunnel. It is mainly used to measure the incoming pressure in key areas in the wind tunnel, including total pressure and static pressure. Through the processing and analysis of the measured pressure data, it can provide directions for the optimization of the wind tunnel operation control strategy and flow field indicators, thereby improving the overall performance of the wind tunnel. [0003] In the previous one-meter-level wind tunnel flow calibration, the stroke of the traditional single-point moving measurement device is relatively short, o...

Claims

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Application Information

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IPC IPC(8): G01M9/04G01M9/06
CPCG01M9/04G01M9/062
Inventor 张胜汪路路陈海峰丁寿和徐来武阎成熊波马烈波樊杨杨陈庭黄文浩贺振阳
Owner INST OF HIGH SPEED AERODYNAMICS OF CHINA AERODYNAMICS RES & DEV CENT
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