Design of high-power intrinsically safe power supply based on fault current change rate
Gong-kuang zidonghua, 2021 In order to solve the problems of low output power, poor protection effect, and slow dynamic response speed of existing intrinsically safe power supply, a high-power intrinsically safe power supply based on fault current change rate is designed.
KANG Qian +3 more
doaj +1 more source
Short circuit transient power analysis of hybrid intrinsically safe circuit
Gong-kuang zidonghua, 2023 Currently, research on the intrinsically safe features of intrinsically safe circuits mostly relies on the IEC spark experimental device as the experimental platform.
NIE Honglin +6 more
doaj +1 more source
Mine intrinsic safety power supply based on adjustable capacity and protection time
Meikuang Anquan, 2021 In view of the contradiction between the capacity and impact resistance of mine intrinsically safe power supply, an intrinsically safe power supply with adjustable capacity and protection time, self-recovery and slow start function is designed.
ZOU Dedong, LIU Peng
doaj +1 more source
Review of discharge theory and numerical research on intrinsically safe low voltage DC circuits
Gong-kuang zidonghua, 2022 The discharge characteristics of intrinsically safe resistive, inductive and capacitive circuits are analyzed. It is pointed out that inductive and capacitive circuits have larger discharge energy and more complex discharge waveforms.
ZHU Lin +3 more
doaj +1 more source
Design of current limiting starting circuit with thermal protection function
Meikuang Anquan, 2021 The circuit of mine intrinsically safe equipment has the risk of short-circuit failure, the chip surface temperature in current-limiting start circuit rises sharply, and the excessively high surface temperature of device leads to the failure of the ...
HUANG Chun, WU Yincheng, LI Yiwen
doaj +1 more source
Influence factors analysis of discharge characteristics of compound intrinsically-safe circuit
Gong-kuang zidonghua, 2020 Existing researches on discharge characteristics of compound intrinsically-safe circuits may be lack of mathematical analysis, or consider influence factors incompletely.
SHI Yaping
doaj +1 more source
Negative pressure automatic water discharge device based on intrinsically safe DC electric valve
Meikuang Anquan, 2021 A negative pressure automatic drainer based on intrinsically safe DC electric valve is designed. Through the design of the drive circuit, protection circuit and control program of the DC electric valve, the 24 V intrinsic safe DC power supply provided ...
WANG Zuxun
doaj +1 more source
A mine intrinsically safe audio and video recorder
Meikuang Anquan, 2023 A mine intrinsically safe audio and video recorder is designed. The device is based on 5G SOC processor, and adopts the photosensitive sensor + white light/infrared laser fill light + intrinsically safe circuit scheme.
LI Wenfeng, WANG Qian, LIU Bin, LIU Kai, LI Qiang
doaj +1 more source
Multi-Sensor System For Level Measurements With Optical Fibres [PDF]
, 2002 A system for measuring liquid level in multiple tanks using optical fibre technology has been developed. The oil field service industry can benefit from this intrinsically safe technology.
Garcinuño, J. +3 more
core +2 more sources
A testing device for intrinsically safe multi-circuit protection power supply
Gong-kuang zidonghua, 2018 In order to solve problems of inconvenient operation, complicated process and low accuracy of existing test methods of intrinsically safe power supply, a testing device for intrinsically safe multi- circuit protection power supply was designed.
REN Gaojian +3 more
doaj +1 more source