Pneumatic type multifunctional pressure scanning valve

Abstract

The invention provides a pneumatic type multifunctional pressure scanning valve. The pneumatic type multifunctional pressure scanning valve comprises a valve shuttle, a valve body and a power assembly, the valve shuttle linearly slides in the valve body through the power assembly, a middle pipeline a and a middle pipeline b are arranged in the valve shuttle, and a calibration air source pipeline, a detected air source pipeline and a pressure sensor pressure measuring end pipeline are arranged in the valve body. The valve shuttle reaches the first valve position under the action of the power assembly, and the calibration air source pipeline and the pressure sensor pressure measuring end pipeline communicate through a middle pipeline a. The valve shuttle reaches the second valve position under the action of the power assembly, and the detected air source pipeline communicates with the pressure sensor pressure measuring end pipeline through a middle pipeline b. According to the pressure scanning valve, the working modes can be simply and rapidly switched, a tedious switching control system and various valves are not needed, and miniaturization design of the pressure scanning valve is better facilitated.

Description

technical field [0001] The invention relates to a pneumatic multifunctional pressure scanning valve, which belongs to the field of pressure scanning valves. Background technique [0002] The pressure scanning valve is a set of highly integrated, highly modular, and high-accuracy pressure acquisition and measurement devices integrating electronics and precision machinery, including calibration gas path, purge gas path, zero-clearing gas path and measurement gas path. [0003] In the fields of aero-engine test, wind tunnel test and other fields, pressure is an important measurement parameter. It has the characteristics of large number of measurement points, high measurement accuracy requirements, wide range, many test states, and long running time. Pressure scanning valve technology has become more and more Mainstream of point pressure measurement. [0004] The current pressure scanning valve is provided with multiple valves, and the opening and closing of the multiple valves...

AI Technical Summary

Problems solved by technology

[0004] The current pressure scanning valve is equipped with multiple valves, and the opening and closing of multiple valves are controlled by the logic circuit to realize the switching of the working mode. Facilitates the miniaturization of this pressure scanning valve and is more expensive to manufacture and repair

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