High precision intelligent gas pressure source

Abstract

The high-precision intelligent gas pressure source disclosed by the invention belongs to the field of static pressure measurement and calibration. Miniature pneumatic pump, gas container A, pressure switch A, and proportional valve together form the driving source part of the pneumatic valve, which is used to provide the driving source for the pneumatic valve in the positive pressure output channel; electric high-pressure pump, filter, gas container B, solenoid valve C. Gas capacity C, pneumatic valve, pressure switch B, gas capacity D, pressure sensor, solenoid valve B, and output end together form the positive pressure output channel of the entire high-precision intelligent gas pressure source; negative pressure sensor, solenoid valve A, vacuum pump , the pressure switch C, the gas capacity D, and the output end together form the negative pressure output channel of the entire high-precision intelligent gas pressure source. Both the positive pressure gas source and the negative pressure are provided with gas capacity, which can improve the gas supply efficiency and output stability of the gas source. The purpose of the present invention is to provide a high-precision intelligent gas pressure source, which provides an intelligent, fast, portable, automatic gas pressure source with high output accuracy for on-site pressure calibration.

Description

technical field [0001] The invention relates to an intelligent pressure source, in particular to a high-precision intelligent gas pressure source, and belongs to the technical field of pressure calibration. Background technique [0002] Usually in the field test and calibration of gas pressure parameters, the calibration device or test equipment used requires an external air source system. When calibrating and testing positive pressure parameters, a gas cylinder or compressed air pump is usually used in conjunction with a pressure reducing valve as a positive When the negative pressure parameters are calibrated and tested, a vacuum pump is usually used as the input of the negative pressure gas source. In the traditional test and calibration, the detection of positive pressure and negative pressure is often completed separately, which requires different calibration instruments, and each uses a set of air source systems. There are also some pressure test and calibration equipm...

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Problems solved by technology

[0003] In view of the actual needs of on-site pressure calibration, in order to solve the problem that the pressure source in the on-site calibration of gas pressure parameters is large, not portable, and cannot intelligently, quickly and accurately provide any pressure specified by the user, the purpose of the present invention is to provide a high-precision intelligent gas pressure source , to provide an intelligent, fast, portable, automatic, and high output gas pressure source for on-site pressure calibration

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