Gas flowmeter complete machine automatic leakage detection device and working method thereof

Abstract

The invention provides a gas flowmeter complete machine automatic leakage detection device and a working method thereof. The method comprises the steps that S1, the gas flow meter is placed in a cylindrical light absorption cover, a light path gap is reserved between the outer wall of the gas flow meter and the light absorption cover, and the surface of the gas flow meter is coated with foam water; s2, a light output end is arranged beside one end of the gas flowmeter, a light receiving end is arranged beside the other end of the gas flowmeter, and low-brightness detection light is input from the light output end to form an annular columnar detection light path; the light receiving end focuses the detection light on a detection point through a light focusing device to form a light spot; the detection point detects the light intensity value of the light spot through a light intensity detection circuit; s3, gas is filled into the gas flowmeter, the gas escapes from the leakage point and forms foam, the light attenuation of the detection light path is increased, and when the attenuation amplitude of the light spot light intensity within the preset duration is larger than a threshold value, it is judged that leakage exists on the outer wall of the gas flowmeter; according to the invention, leakage detection evaluation can be automatically carried out on the whole gas flowmeter.

Description

technical field [0001] The invention relates to the technical field of detection equipment, in particular to an automatic leak detection device of a gas flow meter and a working method thereof. Background technique [0002] When the gas flowmeter conducts the leak detection test, it is used to ventilate the inside of the sealed gas flowmeter while spraying foam water on the surface, and observe whether the surface of the gas flowmeter is foamed to determine whether the gas flowmeter leaks, but under the traditional technology , which requires manual visual observation and is difficult to automate. [0003] In addition, the foam water sprayed by the traditional leak detection device is easy to splash and flow to the ground, which affects the environment of the work site. SUMMARY OF THE INVENTION [0004] The invention proposes an automatic leak detection device and a working method for the whole gas flow meter, which can automatically perform leak detection and evaluation ...

AI Technical Summary

Problems solved by technology

[0002] When the gas flowmeter is performing a leak detection test, it is used to ventilate the inside of the sealed gas flowmeter while spraying foam water on the outside, and observe whether the surface of the gas flowmeter has bubbles to judge whether the gas flowmeter is leaking, but under the traditional technology , which requires manual visual observation and is difficult to automate

[0003] In addition, the foam water sprayed by the traditional leak detection device is easy to splash and flow to the ground, affecting the environment of the work site

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