The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2026
Filed:
Dec. 31, 2023
China Special Equipment Inspection and Research Institute, Beijing, CN;
Yongna Shen, Beijing, CN;
Gongtian Shen, Beijing, CN;
Bin Hu, Beijing, CN;
Junjiao Zhang, Beijing, CN;
Yufeng Ouyang, Beijing, CN;
Mengjun Li, Beijing, CN;
Abstract
Disclosed is a method for detecting leakage of a full-capacity liquefied natural gas (LNG) storage tank by acoustic emission. The method includes: detecting an amplitude of system noise by an acoustic sensor, and determining a signal acquisition threshold; acquiring an amplitude of ambient noise; acquiring an amplitude of the acoustic signal excited by the analog sound source at the distance of 0.1 m from the acoustic sensor and an amplitude of the acoustic signal excited by the analog sound source at the distance of x m from the acoustic sensor, and calculating, an attenuation coefficient of an acoustic signal passing through the outer wall of the storage tank; determining a maximum detection range of the acoustic sensor; and continuously moving the acoustic sensor on the outer wall of the storage tank in a step smaller than the maximum detection range, to perform an LNG leakage detection.