Emergency ultrasonic detection system and method for trace gas leakage of small pressure vessel

Abstract

The disclosure provides an emergency ultrasonic detection system and method for trace gas leakage of a small pressure vessel. The system comprises a sensor module and a signal processing circuit module. The sensor module comprises a piezoelectric ceramic sensor that is arranged in front of a leakage point to be detected and is formed by connecting four piezoelectric crystal elements in parallel; the signal processing circuit module comprises an amplifying circuit and a filter circuit; the amplifying circuit comprises an amplifying chip; the amplifying circuit is connected to the filter circuit; a probe of the piezoelectric ceramic sensor comprises a first port and a second port, the first port and the second port are respectively connected to an amplifying chip through circuits connected with resistors in series, one of the two circuits between the resistors and the amplifying chip is connected with a resistor and a capacitor which are connected in parallel, and the other circuit is grounded through the resistor. According to the technical scheme, real-time online detection can be carried out on the running container, normal work is not influenced, and parts do not need to be dismounted for detection.

Description

technical field [0001] The disclosure belongs to the technical field of safety leakage detection, and in particular relates to an emergency ultrasonic detection system and method for trace gas leakage of small pressure vessels. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] In the daily production of pressure vessels, due to design defects, changes in the environment, and self-loss and other reasons, pressure vessels will have leakage holes and cracks and other forms of damage, resulting in material leakage that will pose a threat to people's life safety and property safety. Even the leakage of a small amount of gas from a small leak will have a very serious impact and easily lead to safety accidents. [0004] Pressure vessels are special equipment widely used in industrial production. Improper use may cause accidents such as explosions...

AI Technical Summary

Problems solved by technology

[0011] Although these methods can detect leaks, the equipment and methods required are more complicated and will damage the equipment to be detected.

Images