Airtightness detector

Abstract

The invention relates to an air tightness detection device of a filter absorber, in particular to an air tightness detector. According to the invention, a three-phase power output end of a frequency converter is connected with an air pump; a power supply end of an industrial programmable controller is connected with an external one-phase alternating current through a power switch; and an output end of the industrial programmable controller is connected with a control end of the frequency converter; the industrial programmable controller is further connected with a man-machine interface; the output end of the air pump is connected with a mass flow meter; the mass flow meter is connected with an air path output interface; the pressure transmitter is connected with the air path input interface; and the pressure transmitter and the mass flow meter are connected with the input end of the industrial programmable controller. The air pump is adopted to provide an air source, and the air pump is adjusted through the industrial programmable controller and the frequency converter, so automatic adjustment of different air flows needed by different products is achieved, and detection efficiency is improved; the high-precision mass flow meter and a pressure sensor are adopted, so precise quantitative detection is realized; and a movable miniaturization design concept is adopted, so field use is facilitated.

Description

technical field [0001] The invention relates to an airtightness detection device for a filter absorber, in particular to an airtightness detector. Background technique [0002] Air tightness is an important technical parameter of the filter absorber, and its air tightness is tested by an air tightness detection device. The source is compressed air. During the air tightness test, turn on the compressed air, unscrew the adjusting screw clamp, slowly turn on the compressed air, and turn the adjusting screw clamp until the pressure of one U-shaped pressure gauge reaches the specified value and balance, then observe the other U-shaped pressure gauge Whether there is a pressure difference, if there is no pressure difference, it is considered that the airtightness of the filter absorber is qualified, otherwise it is unqualified. [0003] The existing technical shortcomings are mainly: [0004] (1) The accuracy of the U-shaped pressure gauge is low, and it is easy to cause readin...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problems that the airtightness of the existing filter absorber cannot be quantitatively detected and the detection operation is cumbersome, the present invention provides an airtight detector, which uses an air pump to provide an air source, and adjusts the air pump through an industrial programmable controller and a frequency converter. Realize the automatic adjustment of different air flows required by different products to improve detection efficiency; use high-precision mass flowmeters and pressure sensors to achieve accurate quantitative detection; adopt a mobile and miniaturized design concept, which is convenient for on-site use

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