Pure electric direct-drive rotary drilling rig

• Main Authors: LI LIMIN, ZHANG CHENG, FAN ZILIANG, YANG XINGYANG, ZHANG TIEHENG, YANG WEIGANG, WU WANSHENG, QIAO ZHENYANG, ZHENG MINGHAI, ZHENG FENGLIANG, GUO XUDONG, ZHU ZHIHUI, CHANG YABIN, HOU DONGTAO, LIU CHUNPENG
• Format: Patent
• Language: Chinese; English
• Published: 29.01.2021
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ELECTRICITY; FIXED CONSTRUCTIONS; GENERATION; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SYSTEMS FOR STORING ELECTRIC ENERGY

The invention provides a pure electric direct-drive rotary drilling rig. The pure electric direct-drive rotary drilling rig comprises a high-voltage power supply system, a control signal communicationsystem and a mechanical power transmission system. The high-voltage power supply system comprises a power storage battery system connected to rectifying equipment through a high-voltage distributionbox, and an external cable connected with a corresponding interface of the rectifying equipment; direct-current high-voltage electricity output by the rectifying equipment is connected into controllers of a power head motor I, a power head motor II, a main pump motor and a main winch motor, and the direct-current high-voltage electricity is converted into three-way high-voltage electricity throughthe controllers to be electrically connected with motors of the mechanical power transmission system correspondingly; the control signal communication system comprises a chassis controller for receiving and identifying a drive