Device and method for stabilizing atmospheric pressure with gauge pressure sensor in wind tunnel

A gauge pressure sensor and atmospheric pressure technology, which is applied in the direction of measuring devices, machine/structural component testing, instruments, etc., can solve problems affecting the measurement results of gauge pressure sensors, etc., and achieve the effect of simple structure, reliable reference pressure, and fewer components

Active Publication Date: 2018-01-16
AVIC SHENYANG AERODYNAMICS RES INST
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Since the gauge pressure sensor generally uses the ambient atmospheric pressure of the test site as the reference pressure, when the ambient atmospheric pressure changes (such as the reason for the sealing of the temporary three-sonic wind tunnel, during the wind tunnel blowing test, the ambient atmospheric pressure of the test site may Large changes occur), which will directly affect the pressure measurement results of the gauge pressure sensor

Method used

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  • Device and method for stabilizing atmospheric pressure with gauge pressure sensor in wind tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A device for stabilizing atmospheric pressure with a wind tunnel gauge pressure sensor, which consists of: a box container 1, a set of pressure measuring pipe joints 2 are installed on one side of the box container, the pressure measuring pipe joints and the box A pipe head gasket 3 is installed between the body containers, and the upper part of the box container is provided with a charging and discharging hole 4, and the charging and discharging hole is matched with a sealing ring 5, and the upper part of the sealing ring is equipped with an electromagnetic switch valve 6 , the other side of the box container is equipped with a sealing plug 7, and a plug gasket 8 is installed between the sealing plug and the box container.

Embodiment 2

[0015] The device for stabilizing atmospheric pressure with a wind tunnel gauge pressure sensor according to Embodiment 1 is characterized in that: one side of the box container is provided with a set of pipe sockets 9, and the pipe sockets are connected with the pressure measuring tubes. The joint is matched, and the other side of the box container is provided with a plug socket 10, and the plug socket is matched with the sealing plug; the pressure measuring tube joint is connected with the pressure sensor 12 through the pressure measuring tube 11.

Embodiment 3

[0017] A method for stabilizing air pressure using the device for stabilizing atmospheric pressure in a wind tunnel gauge pressure sensor described in Embodiment 1 or 2. During use, the pressure sensor used in the wind tunnel test is connected to the pressure measuring pipe joint through the pressure measuring hose, and the pressure becomes The transmitter is placed inside the box container, and its cable is connected to the external equipment through the sealing plug on the right side; when the wind tunnel is not blowing, the electromagnetic switch valve is always open, and the external air can pass through the charging port on the top surface of the box container. The air release hole is exchanged with the air inside the box container. At this time, the pressure inside the box container is equal to the ambient atmospheric pressure; before the wind tunnel blowing test, the electromagnetic switch valve is closed, and the inside of the box container is a closed container, and the...

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Abstract

The invention provides a device for stabilizing the atmospheric pressure for a wind tunnel gauge pressure sensor and a method for stabilizing air pressure. In a wind tunnel test, a gauge pressure sensor is usually used for measuring pressures of measurement points of designate positions; the ambient atmosphere pressure of a testing site is commonly used by the gauge pressure sensor as a reference pressure, so when the ambient atmosphere pressure changes, the results of the pressure measured by the gauge pressure sensor will be directly influenced therefore. The device comprises a box body container, wherein one side of the box body container is provided with a set of piezometer tube joints; tube head sealing gaskets are provided between the piezometer tube joints and the box body container; the upper part of the box body container is provided with an air filling and deflating hole; the air filling and deflating hole matches with a sealing ring; the upper part of the sealing ring is equipped with an electromagnetic switch valve; the other side of the box body container is equipped with a sealing plug; a plug sealing gasket is arranged between the sealing plug and the box body container. The device and method provided by the invention are used for stabilizing air pressure.

Description

Technical field: [0001] The invention relates to a device for stabilizing atmospheric pressure of a wind tunnel gauge pressure sensor and a method for stabilizing the atmospheric pressure. Background technique: [0002] In wind tunnel tests, gauge pressure sensors are usually used to measure the pressure at specified measurement points (such as wind tunnel total pressure, static pressure and model surface pressure). Since the gauge pressure sensor generally uses the ambient atmospheric pressure of the test site as the reference pressure, when the ambient atmospheric pressure changes (such as the reason for the sealing of the temporary three-sonic wind tunnel, during the wind tunnel blowing test, the ambient atmospheric pressure of the test site may large changes), will directly affect the pressure measurement results of the gauge pressure sensor. Invention content: [0003] The object of the present invention is to provide a device and a method for stabilizing atmospheric...

Claims

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Application Information

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IPC IPC(8): G01M9/06G01M9/04
CPCG01M9/04G01M9/065
Inventor 张锴张永存邹德印
Owner AVIC SHENYANG AERODYNAMICS RES INST
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