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:
Sep. 24, 2024
Filed:
Dec. 07, 2023
Shandong University of Science and Technology, Qingdao, CN;
Xiangming Hu, Qingdao, CN;
Di Xue, Qingdao, CN;
Yong Zhou, Wuhai, CN;
Kuibin Wu, Shanghai, CN;
Wei Wang, Shenyang, CN;
Lin Zhu, Shanghai, CN;
Peng Li, Shenyang, CN;
Xiangdong Yao, Shanghai, CN;
Weidong Wang, Shenyang, CN;
Wenqi Shao, Wuhai, CN;
Chuncheng Cai, Shanghai, CN;
Fusheng Wang, Tangshan, CN;
Liwen Guo, Tangshan, CN;
Shandong University of Science and Technology, Qingdao, CN;
Abstract
The present invention relates to the technical field of mine fire prevention and extinguishing, in particular to a liquid nitrogen direct injection and low-temperature foaming intelligent filling system based on mine fire area characteristics and an application method, comprising a liquid nitrogen storage tank, a liquid nitrogen direct injection system and a low-temperature foaming system, wherein the liquid nitrogen storage tank communicates with a liquid nitrogen pressurizing device through a main pipeline; a temperature control unit is arranged on the main pipeline; and the liquid nitrogen pressurizing device is connected with the liquid nitrogen direct injection system and the low-temperature foaming system, respectively, liquid nitrogen is directly injected into a foam liquid, to prepare a low-temperature foam type fire preventing and extinguishing material by means of forced convection, membrane boiling, explosion boiling and nucleate boiling between the liquid nitrogen and water.