Automatic leak detection method for pack body
By installing gas collection strips on the sealing surface of the pack body, the tracer gas is bound in a specific area, which solves the problem of low sensitivity of the existing automatic detection methods and achieves higher detection accuracy and more accurate leak location. .
Patent Information
- Application Number
- CN202411184093.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-01-24
AI Technical Summary
The existing pack body detection method has low sensitivity in automatic detection, making it difficult to effectively locate the leak hole, especially because the driving device of the sniffer cannot reach the leak hole infinitely, and excessive flow will cause the tracer gas to be diluted, reducing the detection accuracy. .
The gas collecting method is used to install gas collecting strips on the sealing surface to confine the tracer gas in a specific area, reduce gas diffusion, and improve detection accuracy. The specific steps include installing the gas collection strip on the sealing surface, starting the sniffer tooling, moving the sniffer nozzle to the bottom of the gas collection strip, starting the leak detection sniffer and instrument, closing the equipment and removing the gas collection strip after completing the test.
By restraining the trace gas in a specific area, the accuracy and sensitivity of the detection is significantly improved, and the leakage of the bag can be more accurately located and detected.
Abstract
Description
Technical Field
[0001] The invention relates to a leak detection technology, in particular to an automatic leak detection method for a pack body. Background Art
[0002] The existing detection methods for pack packages include the accumulation method, the suction gun method, the vacuum box method, the airtight differential pressure leak detection method, etc. The fastest detection method that can locate the leak is the suction gun method. The suction gun method is to flush a certain amount of tracer gas into the package, and then use a suction gun to suck the gas into the detector at the sealing part of the package, and judge the size of the leak by detecting the inhaled gas content. This method is greatly affected by factors such as the suction angle, speed, and distance. Generally speaking, the greater the difference between the suction angle and the leakage angle of the leak, the lower the suction sensitivity, the higher the suction speed, the lower the sensitivity, and the farther the distance of the suction port from the leak, the lower the sensitivity. The existing detection method generally increases the suction gun flow rate and brings the suction gun as close to the sealing surface as possible to collect more missing gas to improve the detection sensitivity. However, this method is used for automatic detection because the driving device of the suction gun cannot be infinitely close to the leak like the manual method, and too large a flow rate will also cause the tracer gas to be diluted, so the ability to improve accuracy is limited. Summary of the invention
[0003] In order to solve the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an automatic leak detection method for a pack body, which confines the tracer gas in a specific area by a gas collection method, reduces the diffusion of the tracer gas, and improves the detection accuracy.
[0004] The technical solution adopted by the present invention to solve the technical problem is: an automatic leakage detection method for a pack body, comprising the following steps:
[0005] Install a gas collecting strip above the sealing surface of the pack body;
[0006] Start the suction gun tooling;
[0007] The suction gun tooling drives the leak detection suction gun to move toward the sealing surface until the nozzle of the leak detection suction gun is located below the gas collecting strip;
[0008] Start the leak detection suction gun and leak detector to complete the leak detection of the sealing surface of the pack body;
[0009] After completing the pack body leak detection, turn off the leak detection sniffing gun and leak detector, and reset the sniffing gun tooling;
[0010] Take out the pack body and remove the gas collecting strip.
[0011] Optionally, after the nozzle of the leak detection suction gun moves to the bottom of the gas collecting bar, wait for 5 to 10 minutes before starting the leak detection suction gun.
[0012] By adopting the above technical solution, the present invention confines the tracer gas in a specific area through a gas collection method, thereby reducing the diffusion of the tracer gas and improving the detection accuracy. DETAILED DESCRIPTION
[0013] The present application is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention.
[0014] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.
[0015] The present invention discloses an automatic leakage detection method for a pack body, which comprises the following steps:
[0016] S1. Install the gas collecting strip above the sealing surface of the pack body.
[0017] In the present invention, the gas collecting strip needs to be attached to the upper position of the sealing surface of the pack body before the leak detection process is performed to surround the sealing surface, so that the tracer gas is accumulated in the surrounding circle.
[0018] The tracer gas of the present invention can be helium or a hydrogen-helium mixed gas. When the pack body is placed in the leak detection line, the tracer gas is filled into the pack body.
[0019] In one embodiment of the present invention, the gas collecting strip can be a long strip, which can be glued on the sealing surface of the pack body to facilitate subsequent disassembly.
[0020] S2. Start the suction gun tooling.
[0021] S3. The suction gun tooling drives the leak detection suction gun to move toward the sealing surface until the nozzle of the leak detection suction gun is located below the gas collecting strip.
[0022] S4. Start the leak detection suction gun and the leak detector to complete the leak detection of the sealing surface of the pack body.
[0023] S5. After completing the leak detection of the pack body, turn off the leak detection suction gun and the leak detector, and reset the suction gun tooling.
[0024] S6. Take out the pack body and remove the gas collecting strip.
[0025] In the present invention, after the nozzle of the leak detection suction gun is moved to the bottom of the gas collecting strip, the leak detection suction gun can be started after waiting for 5 to 10 minutes, so as to accumulate more tracer gas at the gas collecting strip.
[0026] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with (but not limited to) technical features with similar functions disclosed in the present application.
[0027] Except for the technical features described in the specification, the remaining technical features are known technologies to those skilled in the art. In order to highlight the innovative features of the present invention, the remaining technical features will not be described here in detail.
Claims
1. A method for automatic leak detection of a pack body, characterized in that: The following steps are included: Install a gas collecting strip above the sealing surface of the pack body; Start the suction gun tooling; The suction gun tooling drives the leak detection suction gun to move toward the sealing surface until the nozzle of the leak detection suction gun is located below the gas collecting strip; Start the leak detection suction gun and leak detector to complete the leak detection of the sealing surface of the pack body; After completing the pack body leak detection, turn off the leak detection sniffing gun and leak detector, and reset the sniffing gun tooling; Take out the pack body and remove the gas collecting strip.
2. The automatic leak detection method for pack body according to claim 1, characterized in that: After the nozzle of the leak detection suction gun moves to the bottom of the gas collecting bar, wait for 5 to 10 minutes before starting the leak detection suction gun.