Explosion-proof ultrasonic acoustic source for gas detector testing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a lack of a convenient, inexpensive, and routine method for testing the functionality of installed ultrasonic gas leak detectors in industrial environments, particularly in potentially explosive atmospheres, without the need for heavy inert gas bottles.
Innovation Solution
A portable, explosion-proof acoustic energy source system that generates ultrasonic energy in the range of a few kHz to 100 kHz, using a piezoelectric ceramic transducer assembly, allowing for remote testing of ultrasonic gas leak detectors without the need for pressurized inert gases.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pressurized inert gas bottles are used for testing ultrasonic gas leak detectors, then system functionality can be verified, but transportation and handling become cumbersome and costly
Solution Approach 1:
The invention extracts the essential testing function from the complex inert gas bottle system and implements it using a portable acoustic source that generates ultrasonic signals directly, eliminating the need for pressurized gas containers while maintaining the ability to verify detector functionality
Solution Approach 2:
The mechanical system of pressurized gas bottles and regulators is replaced with an electronic-acoustic system that uses an ultrasonic transducer to generate test signals, substituting physical gas handling with electronic signal generation
2Reliability
If pressurized inert gas bottles are used for testing, then leak simulation is possible, but logistical issues and costs increase
Solution Approach 1:
Instead of using actual pressurized gas to simulate leaks, the invention creates a copy of the leak signal by generating ultrasonic acoustic waves that mimic the sound signature of a gas leak, providing the same testing capability without the logistical burden
Solution Approach 2:
The invention changes the parameter of the test medium from pressurized gas to acoustic waves, transforming the testing approach from material-based to energy-based, thereby simplifying logistics while maintaining testing effectiveness
3Reliability
If ultrasonic gas leak detectors are used in hazardous locations, then safety is improved, but testing in these environments becomes more difficult
Solution Approach 1:
The acoustic source is designed to be intrinsically safe and explosion-proof, allowing it to operate safely within hazardous environments where gas detectors are installed, enabling testers to perform in-situ testing without introducing safety risks
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables remote and efficient testing of ultrasonic gas leak detectors, ensuring system readiness and functional safety, while meeting explosion-proof standards, thereby reducing logistical and safety concerns associated with transporting heavy gas bottles.
Implementation Method 1
using a piezoelectric ceramic transducer assembly
Data Source
Figure 1
Figure 2A~2B
Figure 3
AI summary
An explosion-proof system for generating acoustic energy. An exemplary embodiment of the system includes a main housing defining an open housing space and an opening. A cover structure is configured for removable attachment to the main housing structure to cover the opening and provide an explosion-proof housing structure. The cover structure includes an integral head mass. An acoustic energy emitting assembly includes the head mass, and an excitation assembly disposed within the explosion-proof housing structure. An electronic circuit is disposed within the explosion-proof housing structure to generate a drive signal for driving the excitation assembly to cause the acoustic energy emitting assembly to resonate and generate acoustic energy. In one embodiment the acoustic energy is a beam of ultrasonic energy useful for testing ultrasonic gas detectors. A method is also described for testing ultrasonic gas leak detectors using an ultrasonic source.