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公开(公告)号：US10190948B2
公开(公告)日：2019-01-29
申请号：US15381878
申请日：2016-12-16
Inventor： Gang Zhou , Qi Zhang , Ruonan Bai , Weimin Cheng , Wen Nie , Jiao Xue , Han Qiu , Tao Fan , Mao Xu , Cong Chen
Abstract: A multi-nozzle combined atomizing dust suppression experimental equipment under the effect of airflow disturbance includes a simulated roadway device, water spray based dust suppression device and nozzle position adjustor. The simulated roadway device includes an inlet portion, front divergent portion, simulated roadway body, rear convergent portion and outlet portion. The water spray based dust suppression device includes a dust generation and extraction system and spraying system. The dust generation and extraction system includes a dust generation device, exhaust air duct, exhaust fan and outlet air duct while the spraying system includes a water tank, high pressure water pump, confined water pipe, pressure water flow converter and multiple nozzles. The nozzle position adjustor includes a nozzle slide, slide fixing rod, nozzle sliding rack and electrically-controlled drive system which controls the change of horizontal position and vertical position of the nozzles.
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公开(公告)号：US11691043B2
公开(公告)日：2023-07-04
申请号：US17868037
申请日：2022-07-19
Inventor： Xiangming Hu , Weimin Cheng , Bingrui Yan , Yanyun Zhao , Di Xue , Mingyue Wu , Zhenglong He , Guangxing Bai , Zonglei Mou
CPC classification number: A62D1/005 , B01D11/0288 , C09K21/02 , C09K21/06 , E21F15/005
Abstract: Provided is a multi-functional plugging agent for a coal mine and a preparation method thereof. The preparation method comprises: by taking Ecklonia Kurome Okam as a raw material, mixing an Ecklonia Kurome Okam suspension with phosphorus pentoxide for reaction, then performing biodegradation to obtain an Ecklonia Kurome Okam biological extract, adding urea for neutralization, mixing a neutralization product with an inorganic catalyst and melamine for reaction to obtain a bio-based plugging synergist solution, finally cooling the bio-based plugging synergist solution, and mixing the cooled bio-based plugging synergist solution with a certain amount of pentaerythritol and ammonium polyphosphate to obtain the multi-functional plugging agent for the coal mine based on the Ecklonia Kurome Okam biological extract. According to the invention, not only a coal crack can be effectively plugged for a long time, but also an efficient flame-retardant effect can be achieved in a complete period of coal spontaneous combustion.
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公开(公告)号：US10253629B2
公开(公告)日：2019-04-09
申请号：US15359751
申请日：2016-11-23
Inventor： Weimin Cheng , Zhen Liu , Gang Wang , Gang Zhou , Lianjun Chen , Wen Nie , Lin Xin , Yanbin Yu , Guanhua Ni , He Yang
Abstract: Described are a test apparatus and a test method for the wetted perimeter of coal seam water injection. In the test apparatus, a columnar insulator is provided between an upper electrode and a lower electrode, circular insulating tapes are located at the outer edges of the upper electrode and the lower electrode, a circular reverse osmosis membrane is provided at the middle of the circular insulating tape, the upper electrode, lower electrode, circular insulating tapes and circular reverse osmosis membrane form an enclosed chamber which is filled with solid sodium chloride, and cotton yarns are packed among the upper resin backing plate, lower resin backing plate, circular insulating tapes and the inner walls of water permeable perforated pipes. The upper electrode is provided with an electrode lead which passes through the columnar insulator, the lower electrode and the lower resin backing plate and goes out from the tail connecting end.
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公开(公告)号：US10883320B2
公开(公告)日：2021-01-05
申请号：US16624984
申请日：2018-07-13
Inventor： Wei Lu , Qianting Hu , Guansheng Qi , Weimin Cheng , Jinliang Li , Dong Wang , Zhen Liu
Abstract: A ground wellhole dedicated protective pipe, disposed inside a ground wellhole for gas extraction of a mining-induced area, includes a casing, and a chain inside the casing and slidable relative to the casing. The chain includes a chain formed by a plurality of chain drums through serial connection, and a detachable connecting piece connecting between chains. A plurality of air holes is opened in the chain drum along an axial direction of the chain drum.
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Patent Agency Ranking
公开(公告)号：US10774591B2
公开(公告)日：2020-09-15
申请号：US16616790
申请日：2018-12-25
Inventor： Gang Wang , Weimin Cheng , Xiaohua Zhou , Lulu Sun , Chenghao Jiang , Zhen Liu
IPC: E21B7/18 , E21B33/127 , E21B43/114 , E21B43/26 , E21C37/12
Abstract: Provided are a drill-power-based directional hydraulic fracturing system for downhole quick slotting and a method thereof. The directional hydraulic fracturing system includes a water injection pump, a high pressure rubber pipe arranged on the water injection pump is in communication with a drill, a dedicated sealing drill rod for hydraulic fracturing is arranged on the drill, a front segment of the drill rod may be connected with a directional borehole sealer through threads and a sealing ring is provided at the threaded connection. The main steps include drilling, slotting, borehole sealing and fracturing. Firstly, a drill-cut integrated tool is installed at a front end of the drill rod. After drilling is completed, hydraulic slotting, permeability improvement and pressure relief are performed without changing a drill bit. After slotting is completed, the drill bit is retreated, and the directional borehole sealer is installed and pushed to a predetermined position for efficiency sealing. After sealing is completed, high pressure water injection fracturing is performed to increase fissure density and scope with “high pressure penetration” as main. Thus, water injection for the coal seam with high ground pressure and low porosity is realized. In this way, coal bumps are effectively prevented, the powder dust concentration is reduced and the disasters such as gas and fire are prevented.
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6.发明授权公开(公告)号：US12085004B1
公开(公告)日：2024-09-10
申请号：US18395886
申请日：2023-12-26
Inventor： Wen Nie , Chengyi Liu , Yun Hua , Weimin Cheng , Xiao Yan , Fengning Yu , Zilian Zhu , Jie Lian , Chenwang Jiang , Chuanxing Cheng , Haonan Zhang
CPC classification number: F01N3/2892 , F01N3/033 , F01N3/035 , F01N3/037 , F01N3/24 , F01N13/009 , F01N2330/38 , F01N2470/30 , F01N2560/026 , F01N2590/08 , Y02A50/20
Abstract: A swirl structure-based exhaust aftertreatment device for an underground mining diesel vehicle comprises a water tank, a PM collection tank, an inlet tube, a high-speed rotary exhaust separator, an exhaust catalytic converter, a circulating NOx selective catalytic reduction system and an exhaust tube. The high-speed rotary exhaust separator comprises a Laval tube, a throat tube, a swirl tube and a first deposition tube. The concentration of toxic and harmful components in exhaust can be decreased below a concentration threshold, thus avoiding pipeline blockage caused by PM accumulation.
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7.发明授权公开(公告)号：US11506041B2
公开(公告)日：2022-11-22
申请号：US17627117
申请日：2020-07-23
Inventor： Gang Wang , Zhiyuan Liu , Weimin Cheng , Xiangjie Qin , Jiuyuan Fan , Lulu Sun , Zhen Liu , Guanhua Ni , Yanbin Yu , Yixin Liu , Qiming Huang
IPC: E21B43/26 , E21B43/114 , E21B7/04 , E21B15/04
Abstract: A deep low-permeability gassy seam drilling-slitting-sealing-fracturing drilling device includes a drilling control system, a high-pressure water power system, a water pressure grading control system and a fracturing and sealing control system. The drilling control system adjusts a drilling direction a water supply pressure of the drill rod, the high-pressure water power system supplies high-pressure water with different pressures to the device, and the water pressure grading control system ensures that a water pressure for flushing drill cuttings is less than 5 MPa, a water pressure for slitting in a direction perpendicular to a length of the drill rod is 25-35 MPa, a water pressure for sealing with a borehole sealing capsule is 35-40 MPa, and a water pressure for further pressure relief and permeability increasing of a coal seam is 40-50 MPa. The fracturing and sealing control system controls borehole sealing and hydrofracturing operations.
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公开(公告)号：US10794174B2
公开(公告)日：2020-10-06
申请号：US16475606
申请日：2018-07-13
Inventor： Wei Lu , Zhen Liu , Guansheng Qi , Jinliang Li , Dongling Sun , Weimin Cheng , Dong Wang , Chuanrui Qin
IPC: E21B47/06 , E21F17/00 , E21B33/124 , E21B33/13
Abstract: A dynamically self-balancing pressurized borehole sealing apparatus and method thereof for coal seam gas pressure measurement having a pressure measuring tube arranged in a borehole with one end of the pressure measuring tube provided with a pressure measuring unit. The pressure measuring tube is wrapped with an expansion airbag and provided with a pressure introducing hole communicating with the expansion airbag. On each side of the expansion airbag, the pressure measuring tube is wrapped with a front borehole inflatable sealing airbag and a rear borehole inflatable sealing airbag respectively. A gel injection chamber is reserved between the front borehole sealing airbag and the rear borehole sealing airbag and between the expansion airbag and an inner side of the borehole. Gas from the pressure measuring tube expands the expansion airbag and squeezes sealing gel in the gel injection chamber into borehole fractures for dynamic pressurized sealing.
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公开(公告)号：US20200217202A1
公开(公告)日：2020-07-09
申请号：US16624984
申请日：2018-07-13
Inventor： Wei LU , Qianting HU , Guansheng QI , Weimin Cheng , Jinliang LI , Dong WANG , Zhen LIU
Abstract: Disclosed is a ground wellhole dedicated protective pipe for gas extraction of a mining-induced area. The ground wellhole dedicated protective pipe for gas extraction of a mining-induced area is disposed inside a ground wellhole for gas extraction of the mining-induced area and the ground wellhole dedicated protective pipe for gas extraction of a mining-induced area includes a casing and a chain that is disposed inside the casing and slidable relative to the casing, wherein the chain includes a plurality of chain drums and connecting pieces movably connecting the adjacent chain drums, and a plurality of air holes are opened in the chain drum along an axial direction of the chain drum. Beneficial effects include as follows: the ground wellhole dedicated protective pipe for gas extraction of a mining-induced area is capable of resisting a change and a failure of the casing caused by a shearing force, a squeezing force and a stretching force due to a displacement of a rock stratum simultaneously, and ensures the gas passes under any one or more forces no matter what displacement and forces occur to a protection region inside the ground wellhole for gas extraction of the mining-induced area, and thus the pipe has versatility, economy and applicability compared with traditional protection methods and apparatuses.
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