Title:
SMART FIBER GRATING-BASED LEVEL MONITORING DEVICE FOR COAL BUNKER, AND MONITORING METHOD
Document Type and Number:
WIPO Patent Application WO/2021/128705
Kind Code:
A1
Abstract:
A smart fiber grating-based level monitoring device for a coal bunker and a monitoring method. The device comprises a support device located above a coal bunker (23), and the support device is detachably connected to a vibration device. The vibration device extends into the coal bunker (23). A surrounding preconfigured recess (7) is machined on a housing of the vibration device. The preconfigured recess (7) is used to place a fiber grating sensor device (14). The fiber grating sensor device (14) is connected to a fiber grating demodulator (13), and the fiber grating demodulator (13) is electrically connected to a data processing system (21). The data processing system (21) is electrically connected to an alarm device (15). The alarm device (15) is connected to a tape conveyance machine (24). The optical wave reflection change of a fiber grating is fast, has superior precision, and enables a signal to be immediately transmitted to a display device, improving the operation environment of the coal bunker (23). The invention is unaffected by the harsh conditions of the coal bunker (23), and achieves stable, real-time coal level monitoring, thereby detecting coal caking in a timely manner, and enabling coal caking to be resolved. The invention is also easy to deploy and maintain, and has a low cost.
Inventors:
WEI SHIMING (CN)
ZHANG ZESHENG (CN)
ZHANG ZESHENG (CN)
Application Number:
PCT/CN2020/090605
Publication Date:
July 01, 2021
Filing Date:
May 15, 2020
Export Citation:
Assignee:
UNIV HENAN POLYTECHNIC (CN)
International Classes:
G01F23/14; G01D5/353
Foreign References:
| CN108593048A | 2018-09-28 | |||
| CN1588013A | 2005-03-02 | |||
| CN111103029A | 2020-05-05 | |||
| CN208953017U | 2019-06-07 | |||
| US20160097277A1 | 2016-04-07 |
Other References:
SHI XINGUO, QI SHUAI; CHENG YAN; ZHUO SHAO-FAN: "Analysis of Coalbunker Blockage Mechanism and Design for Dredging Device", MEIKUANG-JIXIE = COAL MINE MACHINERY, CN, vol. 34, no. 12, 1 December 2013 (2013-12-01), CN, pages 42 - 43, XP055824177, ISSN: 1003-0794, DOI: 10.13436/j.mkjx.2013.12.110
LI AIJUN, WU JIANPING: "An Optical Fiber Coal Level Sensor", JOURNAL OF TAIYUAN HEAVY MACHINERY INSTITUTE, vol. 18, no. 2, 1 June 1997 (1997-06-01), XP055824182, ISSN: 1673-2057
LI AIJUN, WU JIANPING: "An Optical Fiber Coal Level Sensor", JOURNAL OF TAIYUAN HEAVY MACHINERY INSTITUTE, vol. 18, no. 2, 1 June 1997 (1997-06-01), XP055824182, ISSN: 1673-2057
Attorney, Agent or Firm:
BEIJING HUI & XIN IP LAW OFFICE (CN)
Download PDF:
Previous Patent: OPEN SET CLASSIFICATION METHOD BASED ON CLASSIFICATION UTILITY
Next Patent: NATURAL GAS DIFFUSION COEFFICIENT MEASUREMENT APPARATUS
Next Patent: NATURAL GAS DIFFUSION COEFFICIENT MEASUREMENT APPARATUS