基于抽水蓄能的井下给排水两用能量回收系统

Design of Underground Energy Recovery System for Water Supply and Drainage Based on Pumped Storage

针对现有矿井开采过程中地面向井下供排水时存在设备能耗大和供水的水势能浪费问题,利用抽水蓄能技术,通过水势能和电能之间的相互转化,设计了一套基于抽水蓄能的井下给排水两用能量回收系统和井下给排水两用能力回收装置。装置的机械部分由给水动力单元、发电能量回收单元、排水助力单元和动力输出控制单元构成。液位检测、差速锁控制、电磁离合器控制和电路设计组成控制部分。当地面向井下供水时,本系统中给水动力单元将水势能转换为电能储存到电池组内,实现储能。在用电低谷期时利用这些电能将井底水仓的水排至中间巷道达到抽水蓄能的目的,同时电池组内的电能也可用于井下其他需要供电设备。在用电高峰期时,蓄水池内的水释放转换为电能,为井下排水泵助力供能,实现降低排水泵能耗,达到节能的目的。

In view of the problems of high energy consumption of equipment and the waste of water potential energy in water supply during underground water supply and drainage,a set of dual-purpose energy recovery system for underground water supply and drainage based on pumped storage technology is designed through the mutual conversion of water potential energy and electrical energy.The mechanical part of the device is composed of water supply power unit,power generation energy recovery unit,drainage booster unit and power output control unit,and the control part consists of liquid level detection,differential lock control,electromagnetic clutch control,and circuit design control part.When the water is supplied to the underground,the water supply power unit in the system converts the hydraulic potential energy into the energy and stores it in the battery pack for energy storage.During the off-peak demand hours for electricity,the electrical energy is used to pump the water from the water silo at the bottom of the well to the intermediate roadway for pumped energy storage.At the same time,the electrical energy in the battery pack can also be used for other power supply equipment underground.During the peak demand hours for electricity,the water is released from the reservoir and converted into electrical energy to support the energy supply of the underground drainage pump,so as to reduce the energy consumption of the drainage pump and achieve the goal of energy saving.