Differential pressure pulsation pressure sensor calibration device
A technology of pulsating pressure and calibration device, which is used in measuring devices, measuring fluid pressure, instruments, etc., can solve the problems of troublesome sensor calibration, small size and large number of sensors, and achieves the advantages of accurate measurement, compact device structure, and not easy to damage. Effect
Inactive Publication Date: 2017-12-22
CHINA ACAD OF AEROSPACE AERODYNAMICS
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Problems solved by technology
[0004] Pulsating pressure sensors are widely used. The sensors used in the test are small in size and large in number. Sensor calibration is troublesome, especially for differential pressure pulsating pressure sensors. Their calibration needs to provide measurement pressure and reference pressure. Since the sensor itself reference pressure The steel pipe is very thin, and it is easy to cause damage during the installation test
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[0040] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0041] see figure 1 , the present invention provides a differential pressure pulsating pressure sensor calibration device, comprising: an inner cylinder structure, which is hollow inside to form a reference pressure chamber, and the inner cylinder structure is connected with a reference pressure tube; and an outer cylinder structure, the sleeve It is arranged on the outside of the inner cylinder structure, and the space between the inner cylinder structure and the inner cylinder structure forms a measurement pressure chamber, and the outer cylinder structure is connected with a measurement pressure tube for communicating the measurement pressure chamber with a measurement pressure source , the outer cylinder structure has a first throu...
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The invention discloses a calibration device for a differential pressure pulsating pressure sensor, which comprises: an inner cylinder structure, which is hollow inside to form a reference pressure chamber, and the inner cylinder structure is connected with a reference pressure tube; and an outer cylinder structure, which is sleeved in the inner cylinder The space between the outer side of the cylinder structure and the inner cylinder structure constitutes a measuring pressure chamber, and the outer cylinder structure is connected with a measuring pressure tube for communicating the measuring pressure chamber with the measuring pressure source. The first through hole connecting the reference pressure chamber with a reference pressure source; the inner cylinder structure is provided with a number of installation holes, the installation holes are used to install the sensor on the inner cylinder structure, and the reference pressure end of the sensor is located in the reference pressure chamber, The pressure measuring end is located in the measuring pressure chamber; the outer cylinder structure also has a wiring hole for the external wiring of the sensor to extend to the outside. The invention can meet the static calibration of multiple sensors at the same time and improve the efficiency of calibration.
Description
technical field [0001] The invention belongs to the technical field of sensor testing, and in particular relates to a sensor measuring device. More specifically, the invention relates to a static calibration device for a differential pressure pulsating pressure sensor. Background technique [0002] Pressure distribution measurement is one of the most basic contents of fluid mechanics experiments. It can provide the aerodynamic pressure load at the location of each measuring point. Further, by performing area-weighted integration on the pressure of each measuring point, the overall force on the research object can be obtained. Aerodynamic forces and moments. In experimental research, some experimental projects require dynamic aerodynamic time history. If the above-mentioned pressure integration method is used, the pressure time history of each measuring point must be synchronized, that is, the pressure at each point at the same moment must be recorded. Signal. Although the ...
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IPC IPC(8): G01L27/00
Inventor 贾毅田笑尹世博
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS