A kind of tool suitable for vehicle-mounted liquefied natural gas cylinder pressure test

CN122108786APending Publication Date: 2026-05-29SHIYAN KUNYU YUMING AUTO PARTS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHIYAN KUNYU YUMING AUTO PARTS CO LTD
Filing Date
2026-03-13
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies, when conducting pressure tests on vehicle-mounted liquefied natural gas cylinders, suffer from inaccurate pressure gauge readings due to the presence of residual liquid, making it impossible to reliably determine airtightness and posing a safety risk.

Method used

A rotating simulation unit is used to form a continuous liquid film of residual liquid inside the gas cylinder. Combined with an infrared thermal imager array and a high frame rate industrial camera, the leakage points on the surface of the gas cylinder are monitored in real time by detecting the thermal disturbance and light scattering characteristics of the medium. The detection sensitivity is improved by using a multimodal sensing array and a pulse pressurization module.

Benefits of technology

It significantly improves the detection sensitivity of minor leaks in gas cylinders, reduces the false alarm rate, and enables timely detection of minor leaks and early potential hazards, ensuring the safety performance of gas cylinders.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to a tool suitable for a vehicle-mounted liquefied natural gas cylinder pressure test, which comprises a clamp frame, a pressure pipeline system, a rotary simulation unit for driving the cylinder to rotate and feeding back the angle phase information of the cylinder in real time, an environment simulation groove for containing a detection medium, the clamp frame being configured to immerse at least a part of the cylinder in the detection medium, a multi-modal perception array comprising an infrared thermal imager array aligned with the surface of the cylinder, and a control system configured to perform a dynamic pressure test: controlling the pressure pipeline system to inject high-pressure fluid with a preset temperature difference into the cylinder, and monitoring the thermal disturbance characteristics of the liquid film on the surface of the cylinder or the surrounding detection medium through the infrared thermal imager array during the rotation of the cylinder, and locating the leakage point in combination with the angle phase information of the cylinder. The application can significantly improve the detection sensitivity of the micro-leakage of the cylinder and avoid the detection misjudgment caused by the pressure fluctuation due to residual liquid in the conventional pressure test.
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