公开(公告)号：US11940376B2

公开(公告)日：2024-03-26

申请号：US18147236

申请日：2022-12-28

Applicant: Anhui University of Science and Technology

Inventor： Huawei Jin ,  Fangzheng Yan ,  Lei Fang

IPC: G01N21/17 ,  G01N1/20 ,  G01N1/22 ,  G01N1/24 ,  G01N33/00

CPC classification number: G01N21/1702 ,  G01N1/24 ,  G01N33/0027 ,  G01N2021/1704 ,  G01N2201/06113

Abstract: A system for detecting a concentration of free SiO2 in coal dust includes a first sampling tube and a second sampling tube for sampling the coal dust, a three-way control valve communicated with the first sampling tube and the second sampling tube respectively, a photoacoustic spectrometry detection device communicated with the three-way control valve through a connecting pipeline, and a SiO2 reaction tube for reacting SiO2 in the coal dust; and the SiO2 reaction tube is disposed on the second sampling tube. In the present disclosure, a coal dust sampling line is convenient to change by disposing the three-way control valve, and the first sampling tube and the second sampling tube are respectively communicated with the photoacoustic spectrometry detection device, so as to perform a differential accurate detection of the reacted CO content, and to obtain the SiO2 content.

公开(公告)号：US12234730B2

公开(公告)日：2025-02-25

申请号：US18432330

申请日：2024-02-05

Applicant: Anhui University of Science and Technology

Inventor： Huawei Jin ,  Haitao Ji ,  Fangzheng Yan

IPC: E21F11/00 ,  B63C9/00 ,  B63G8/00

Abstract: Disclosed is an underwater robot for a mine flooding rescue, including a starting unit configured to control the implementation of a whole rescue action; a drive unit connected with the starting unit and configured to provide a robot with power to move; and an execution unit connected with the drive unit and configured to salvage underwater life sources.