The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 09, 2025
Filed:
Jan. 29, 2024
Taiyuan University of Technology, Taiyuan, CN;
Guorui Feng, Taiyuan, CN;
Xiaoze Wen, Taiyuan, CN;
Jun Guo, Taiyuan, CN;
Ruipeng Qian, Taiyuan, CN;
Wenbo Huang, Taiyuan, CN;
Jie Zhang, Taiyuan, CN;
Wenming Feng, Taiyuan, CN;
Zi Wang, Taiyuan, CN;
Xu Zhang, Taiyuan, CN;
Taiyuan University of Technology, Taiyuan, CN;
Abstract
An electric-pulse fracturing device for hard roof of coal mine based on a self-sealing water bag and an using method thereof are provided. The device includes a power switch, a charging power supply, a current limiting protection resistor, an energy storage capacitor and a high-voltage electric pulse switch connected in sequence. The energy storage capacitor is connected with an end of a gas gap switch, an other end of the gas gap switch is connected with an assembled self-sealing water bag high-voltage electric pulse electrode structure through a high-voltage cable, and the electrode structure is fixed through an assembly rod. The self-sealing water bag high-voltage electric pulse electrode structure includes a self-sealing water bag and an electrode structure capable of focusing shock wave energy, and the number of the self-sealing water bag high-voltage electric pulse electrode structure depends on fracturing effect.