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公开(公告)号：US11865389B2
公开(公告)日：2024-01-09
申请号：US16975421
申请日：2019-05-14
Applicant: China University of Mining and Technology
Inventor： Ziyi Jiang , Wei Li , Jinsong Zhu , Fan Jiang , Ge Zhao , Xiumei Liu , Beibei Li
Abstract: The present invention discloses a vehicle-mounted large-flow fire-fighting foam fluid mixing system, including a supply kit, a mixing kit, a control kit, and a pipeline kit. The supply kit includes an auxiliary gas supply device, a fire pump, an integrated foam pump, a fire pump main motor, and a coupling. The mixing kit includes a fire monitor interface, a foam generating device, and a fluid mixing device. The control kit includes a foam mixing proportion single-chip microcomputer control system, an alarm module, a power module, an auxiliary air compressor switch module, a frequency converter, and a central control display screen. The pipeline kit includes an air drainage tube, a fire hose, a foam liquid pipe, and a pipeline valve. For the problems of flow fluctuation and low foam foaming efficiency, the present invention optimizes the design and adopts a new control policy, thereby implementing precise mixing under the large-flow condition.
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公开(公告)号：US10139011B2
公开(公告)日：2018-11-27
申请号：US15740351
申请日：2016-11-04
Applicant: China University of Mining and Technology
Inventor： Xiumei Liu , Beibei Li , Huawen Xu , Jie He , Bingyang Wang , Mingli Jiao , Fuhua Sun , Haibing Wang , Xiaochen Liu , Zhenzhen Dai , Zihao Xie
Abstract: A self-heat-dissipation pressure-reducing valve includes: a heat-dissipation valve core, an upper valve deck, a guiding valve deck, a valve body, a heat-dissipation valve seat, an air guide hood, and a turbine-type heat dissipation device. The heat-dissipation valve core is formed by a valve core composed of a heat pipe, and valve core heat-dissipation fins. The heat-dissipation valve seat includes a valve seat pocket, a valve seat shell, heat pipes, and valve seat heat-dissipation fins. An outer circumferential surface of the valve seat pocket is wound with multiple heat pipes fixed to the valve seat heat-dissipation fins. The turbine-type heat dissipation device includes a fan shell provided at a medium inlet, and a turbine. The turbine is lashed by a medium to turn the fan shell, and wind is guided in one direction through the external air guide hood to implement heat dissipation.
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公开(公告)号：US10814260B2
公开(公告)日：2020-10-27
申请号：US16349276
申请日：2017-08-25
Applicant: China University of Mining and Technology
Inventor： Beibei Li , Xiumei Liu , Jingjing Wang , Ruirui Li , Yaoda Yue , Jie He , Wei Li
Abstract: The present invention discloses a gas-powder separation three-phase jet flow fire monitor system, including a gas-powder separation three-phase fire monitor head, a filter, a nitrogen pressurization apparatus and a dry powder tank. The dry powder tank is connected to a gas-powder mixture inlet pipe of the gas-powder separation three-phase fire monitor head through a pipeline. A nitrogen outlet pipe of the gas-powder separation three-phase fire monitor head is connected with one end of the nitrogen pressurization apparatus through the filter. The other end of the nitrogen pressurization apparatus is connected with the dry powder tank. The present invention is simple in structure and convenient to use. A cyclone separation apparatus of a dry powder pipeline of the fire monitor may separate nitrogen from conveyed ultrafine dry powder to enable the ultrafine dry powder to be fully mixed with a water-based fire extinguishing agent, thereby reducing an atomization degree of jet flow and enlarging a range of the fire monitor. In addition, the separated nitrogen enters the dry powder tank for recycling after being pressurized by the pressurization apparatus, thereby reducing the fire extinguishing cost.
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公开(公告)号：US10663982B2
公开(公告)日：2020-05-26
申请号：US16302677
申请日：2018-01-16
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Xiumei Liu , Ruirui Li , Beibei Li , Jie He
Abstract: Disclosed in the present invention is a double-spring and high-precision hysteretic pressure control valve, including an upper valve body, a lower valve body, a double-spring pressure adjustment valve, a spring energy storage linkage mechanism, and a main valve. The double-spring pressure adjustment valve includes a rough adjustment stud, a rough adjustment spring, a fine adjustment stud, a fine adjustment spring, a spring guide sleeve, and a pressure adjustment valve spool. The spring energy storage linkage mechanism includes a guide block, a valve spool control linkage, a tension spring, and a tension spring shift lever and a tension spring sliding hook. The valve spool control linkage is connected to the guide block at one end, and connected to a main valve spool drive rod via a pin at the other end. The tension spring sliding hook is mounted on the guide block, and one end of the shift lever is placed below the tension spring sliding hook so as to drive the tension spring sliding hook to move upwards, thereby controlling the state of the tension spring and enabling energy storage of the spring. The spring energy storage linkage mechanism make the valve spool to open and close momentarily at the right portion. The double-spring and high-precision hysteretic pressure control valve according to the present invention has a low cost, and can provide precise control of opening and closing pressures for the pressure control valve and control of both states of opening and closing for the main valve.
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