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In order to improve the accuracy and efficiency of air tightness leak detection and realize detection automation, the currently popular air tightness leak detection method is the pressure drop method. If the differential pressure fails, if the container being tested leaks, it will inevitably cause the loss of gas quality in the container and reduce the original air pressure in the container. By measuring the gas pressure drop in the container, the actual amount of gas leaking from the container can be deduced to achieve the purpose of detecting air tightness and leakage.

Although the air tightness detection technology based on differential pressure measurement has improved detection efficiency and automation compared with traditional leak detection methods, it still cannot meet the requirements of production efficiency in some occasions, especially when the internal volume of the workpiece to be tested is large. In order to ensure a certain detection accuracy, sufficient inflation time and balance time must be ensured.Because, during the inflation process, the temperature of the gas will change. If the inflation time and equilibrium time are not long enough, the temperature changes cannot stabilize. When entering the detection process, the temperature changes will cause changes in the differential pressure, which will reduce the detection accuracy.At this time, leak detection accuracy and leak detection efficiency become contradictory relationships.In order to improve the efficiency of leak detection, Hairis Automation Technology Co., Ltd. has proposed some theories and methods, such as rapid inflation method, temperature compensation method, adding fillers to reduce the internal volume of the workpiece being tested, etc.These detection efficiency improvement measures have been verified and developed in practical applications.For example, the air tightness testing machine provided by Shenzhen Hairuis Automation Co., Ltd. to a gearbox manufacturer adopted the above efficiency improvement measures, and the working rhythm was increased from 1 piece every 2 minutes to 1 piece every 30 seconds, and the detection efficiency increased by 200%.In addition, in order to meet the needs of automated production, the company has developed various automated air tightness leak detection equipment based on the air tightness detector that integrates loading, blocking, detection, display, alarm, unloading and other functions.

Although the above air tightness detection technology can detect whether the workpiece is leaking, it cannot determine the specific location of the leak.In some cases, when the workpiece fails to pass the inspection, it is necessary to put the workpiece into the water tank and pass the water inspection, which further improves the automation and detection efficiency of air tightness inspection.In addition, with the rapid development of computers, electronics, and sensing technologies, the development of air tightness detection technology will usher in new development opportunities.In the future, air tightness detection technology will further develop in the direction of high precision, high efficiency, and intelligence.The wide application of modern air tightness leak detection equipment will also play an increasingly important role in ensuring product quality, ensuring production safety, and improving corporate economic benefits.

In order to improve the efficiency of air tightness testing, Hairis has proposed some theories and methods, such as rapid inflation method, temperature compensation method, adding fillers to reduce the internal volume of the workpiece being tested, etc.These detection efficiency improvement measures have been verified and developed in practical applications

This article comes from Hirays Automation Technology Co., Ltd. (www.hirays.com) which has been focusing on the R&D, production and sales of IP protection level testing equipment; waterproof testing equipment, air tightness testing equipment, and sealing testing equipment for ten years