Zobrazeno 1 - 10
of 239
pro vyhledávání: '"Lei Zhipeng"'
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 9, Pp 167-177 (2023)
Insulation is considered the weakest link in electrical equipment. The combined effects of special working conditions in coal mines and aging factors such as electrical, thermal, and mechanical stresses make it difficult to determine the aging mechan
Externí odkaz:
https://doaj.org/article/b3ee8dde57cd46b587e915ef1d8e1558
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 1, Pp 46-55 (2023)
The high voltage cable used in mine is affected by many factors, such as electricity, heat and machinery stress. These factors accelerate insulation aging and easily lead to cable leakage, short circuit or discharge. At present, the dielectric respon
Externí odkaz:
https://doaj.org/article/388ec7b125da40bca7a684ecb97cbd6b
Autor:
SHI Gang, LEI Zhipeng
Publikováno v:
Gong-kuang zidonghua, Vol 49, Iss 10, Pp 8-16, 51 (2023)
The dragging cable of shearer is often subjected to external squeezing pressure during operation, which causes partial discharge of the cable insulation and affects the service life of the cable. The existing research focuses on the analysis of parti
Externí odkaz:
https://doaj.org/article/c9fc4fc155a14b94a8960bd894e9fb51
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 5, Pp 32-38 (2022)
For borehole wall state detection of horizontal directional kilometer drilling rig used for coal mine gas extraction, it is considered through analysis that the commonly used logging technologies such as gamma ray method and ultrasonic method are dif
Externí odkaz:
https://doaj.org/article/169eb250d847465092711f1d56bdbc6d
Publikováno v:
Gong-kuang zidonghua, Vol 48, Iss 9, Pp 140-147, 156 (2022)
At present, the walking and drilling operations of the mine kilometer directional drilling rig are all realized by the manual operation of drillers. The intelligence level is low. At present, there is no research on the correlation between the action
Externí odkaz:
https://doaj.org/article/158ea55d463c4a48a943c5a95a6edfdc
Publikováno v:
Gong-kuang zidonghua, Vol 45, Iss 7, Pp 17-20 (2019)
For problems of limited monitoring parameters, single control function and inability to linkage in existing crusher monitoring and control systems, a double-gear roller crusher monitoring and control system in fully mechanized working face was develo
Externí odkaz:
https://doaj.org/article/1b8f5e3ad67746fb8b96774153018b67
Insulation state assessment of mine-used ethylene propylene rubber cable under electro-thermal aging
Autor:
MEN Rujia, LEI Zhipeng, LIN Lingyan, ZHANG Guodong, ZHAO Ruixue, ZHU Jianfei, XU Chunyu, SONG Jiancheng, TIAN Muqin
Publikováno v:
Gong-kuang zidonghua, Vol 45, Iss 4, Pp 67-71 (2019)
There are few studies on insulation aging characteristics of ethylene propylene rubber cable under electro-thermal aging. According to the above problem, electro-thermal aging test of mine-used ethylene propylene rubber cable was carried out, polariz
Externí odkaz:
https://doaj.org/article/77aaaf0ce1fd454fa0dddbccde1211e4
Autor:
CAI Wenfei, LEI Zhipeng, SONG Jiancheng, ZHANG Guodong, REN Hongqiu, TIAN Muqin, XU Chunyu, ZHU Jianfei
Publikováno v:
Gong-kuang zidonghua, Vol 44, Iss 11, Pp 25-31 (2018)
The common faults of scraper conveyor chains and its causes were analyzed. The calculation process of chain tension of scraper conveyor was expounded. The principles and characteristics of five main chain tension monitoring technologies at home and a
Externí odkaz:
https://doaj.org/article/4961a3847e4f46f7bb746b424bf77659
Publikováno v:
Gong-kuang zidonghua, Vol 44, Iss 5, Pp 36-41 (2018)
In order to analyze influence of air gaps or impurities in insulation layer on temperature rise of windings of mine-used flameproof dry-type transformer, a mine-used 1 000 kVA/10 kV dry-type transformer with continuous winding was selected as researc
Externí odkaz:
https://doaj.org/article/fc8af6a8a2d04dd7938cfac36da09b5a
Publikováno v:
Gong-kuang zidonghua, Vol 42, Iss 12, Pp 6-10 (2016)
For problems of non-comprehensive monitoring data and large volume and inconvenient installation of flameproof type monitoring equipment existed in running status monitoring system for scraper conveyor in fully mechanized working face, a running stat
Externí odkaz:
https://doaj.org/article/59dcbc77c2dd45129fa9ebe8e86f0231