The automation of air tightness testing equipment testing improves testing accuracy and efficiency.The most commonly used air tightness testing method at present is the differential pressure method.，If the container being measured leaks, it will inevitably cause the loss of gas mass in the container and reduce the original air pressure in the container.deviceThe internal gas pressure drop can be used to deduce the actual amount of gas leaking from the container to achieve the purpose of detecting gas leakage.

Based on differential pressure measurementAir tightness testing equipmentAlthough detection technology has improved detection efficiency and automation process compared with traditional detection methods,degree, but in some cases it still cannot meet the requirements of production efficiency, especially when the internal volume of the workpiece to be tested is large, in order to ensure aTo achieve a certain detection accuracy, sufficient inflation time and balancing time must be ensured.Because, during the inflation process, the temperature of the gas will changeation, if the inflation time and equilibrium time are not long enough, the temperature change cannot stabilize. When entering the detection process, the temperature change will causeChanges in differential pressure reduce detection accuracy.At this time, detection accuracy and detection efficiency become contradictory.To improve leakageFor detection efficiency, some domestic and foreign research institutions have proposed some theories and methods, such as rapid inflation method, temperature compensation method, additional installationFillers can be used to reduce the internal volume of the workpiece being tested.These detection efficiency improvement measures have been verified and developed in practical applications.Like the seaThe air tightness testing machine provided by Ruisi Automation Company to a gearbox manufacturer has adopted the above efficiency improvement measures and the work has been saved.Shot by the original everyOne piece every 2 minutes has been increased to 1 piece every 1 minute, and the detection efficiency has increased by 50%.In addition, in order to meet the needs of automated production,Based on the air tightness detector, the company has developed various functions such as loading, sealing, detection, display, alarm, and unloading.All-in-one automated leak detection equipment.

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, workingWhen the workpiece fails to pass the test, it is necessary to put the workpiece into the water tank and determine the location of the leak through water inspection.In order to improve detection efficiency, newHigh-end leak detectors often combine air tightness detection (dry leak detection) and water detection functions into one device.After the workpiece to be tested enters the leak detector, the firstDry leak detection is performed first, and if the workpiece is qualified, the workpiece is sent out.If the workpiece is unqualified, the workpiece will automatically sink under the leak detector.In the water tank, water inspection is performed to determine the location of the leakage point, which further improves the automation and detection efficiency of air tightness testing.also, with the rapid development of computers, electronics, and sensing technologies, the development of leak detection technology will usher in new development opportunities.future energyTightness detection technology will further develop in the direction of high precision, high efficiency and intelligence.The wide application of modern air tightness testing equipment alsoIt will play an increasingly important role in ensuring product quality, ensuring production safety, and improving corporate economic benefits.

In order to improve the efficiency of leak detection, some domestic and foreign research institutions have proposed some theories and methods, such as rapid inflation method, temperature compensation method, etc.Compensation methods, adding fillers to reduce the internal volume of the workpiece being tested, etc.These detection efficiency improvement measures have been verified in practical applicationsand development.