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A gas impingement jet pressure measurement device based on a three-coordinate moving platform

A mobile platform and impingement jet technology, which is applied in the direction of measuring devices, machine/structural component testing, fluid dynamic testing, etc., can solve the problems of low pressure in the boundary area, high price, limited range and precision, etc., and achieve high-precision measurement , fast replacement, strong applicability

Active Publication Date: 2020-04-14
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If multiple sensors are arranged on the surface of the object to measure the jet impact surface pressure, it is limited by the price and quantity of the sensors, as well as the limitation of the space size, the measurement cost is high, and the spatial resolution accuracy is not enough
Although thin-film sensors can directly measure surface pressure distribution, they are expensive and have limited range and accuracy
And because the jet impact has the characteristics of wide action area, high pressure in the central area, and low pressure in the boundary area, it is also difficult to use a single-range sensor to achieve high-precision measurement of the entire impact area
In addition, in actual operation, there are many gas jet impact conditions, and the above-mentioned traditional measurement schemes are difficult to achieve efficient and universal measurement

Method used

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  • A gas impingement jet pressure measurement device based on a three-coordinate moving platform
  • A gas impingement jet pressure measurement device based on a three-coordinate moving platform
  • A gas impingement jet pressure measurement device based on a three-coordinate moving platform

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Experimental program
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Effect test

Embodiment 1

[0031] see figure 1 , a gas impingement jet pressure measuring device based on a three-coordinate moving platform, comprising a first linear adjustment device 1, a second linear adjustment device 2, a third linear adjustment device 3, a rotary joint 4, a pressure bearing plate 5, and a gas pressure Sensor 6 and base 7. The first linear adjustment device 1, the second linear adjustment device 2, and the third linear adjustment device 3 are all driven by the same screw, and the first linear adjustment device 1 is vertically connected to the third linear adjustment device 3, The second linear adjustment device 2 is horizontally connected to the first linear adjustment device 1 . One end of the second linear adjustment device 2 is connected to the second motor 21, and the other end is provided with an end plate 23. The end plate 23 is connected to one end of the rotary joint 4, and the other end of the rotary joint 4 is connected to the pressure bearing plate 5. The pressure bear...

Embodiment 2

[0041] see Figure 10 , the pressure-bearing plate 5 is rotated by an angle through the rotary joint 4. During detection, the nozzle 8 sprays a pressurized airflow on the front of the pressure-bearing plate 5, and the first motor 11, the second motor 21 and the third motor 31 are linked to drive the pressure-bearing The plate 5 moves along the three coordinates of X, Y, and Z, and the gas pressure sensor 6 captures and detects the pressure distribution parameters of the pressurized gas flow in the movement range of the pressure receiving plate 5 when the nozzle 8 moves in three-dimensional space.

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Abstract

The invention discloses a three-coordinate-moving-platform-based pressure measuring device of an air impingement jet. The three-coordinate-moving-platform-based pressure measuring device comprises three linear adjusting devices, a rotating joint, a bearing plate, a gas pressure sensor, three displacement sensors and a base. The three linear adjustment devices have the same lead-screw driving modes; the first linear adjustment device is vertically connected to the third linear adjustment device; and the second linear adjustment device is horizontally connected to the first linear adjustment device. One end of the second linear adjustment device is connected with a second motor and an end plate is arranged at the other end of the second linear adjustment device; the end plate is connected with one end of the rotating joint and the bearing plate is connected to the other end of the rotating joint; and the gas pressure sensor is connected to the back of the bearing plate. When detection iscarried out, a nozzle sprays pressured airflow to the front side of the bearing plate; the first motor, the second motor, and the third motor are linked and drives the bearing plate to move along theX coordinate, the Y coordinate, and the Z coordinate; the gas pressure sensor captures and detects the pressure intensity parameters of the pressured air flow in the moving zone of the bearing duringmovement of the nozzle in three-dimensional space.

Description

technical field [0001] The invention relates to the technical field of flow parameter measurement of gas impinging jets, in particular to a gas impinging jet pressure measuring device based on a three-coordinate moving platform. Background technique [0002] Gas impingement jets are widely used in blowing, drying, cold flow spraying and other operations. The magnitude and distribution characteristics of the pressure generated by the jet impinging on the surface of the object determine its effect. Therefore, accurate measurement of the surface pressure distribution generated by the impinging jet is of great significance for evaluating the performance of the jet and optimizing the design of the jet generating device. If multiple sensors are arranged on the surface of the object to measure the jet impact surface pressure, it is limited by the price and quantity of the sensors, as well as the limitation of the space size, the measurement cost is high, and the spatial resolution ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M10/00
CPCG01M10/00
Inventor 高文智曹绕陈建曾亿山刘磊
Owner HEFEI UNIV OF TECH