Rapid solution mining is the key to cavern construction in salt formations. Rapid solution mining technology with self-resonating cavitating water jets is described in this paper. It can generate three main physical e...Rapid solution mining is the key to cavern construction in salt formations. Rapid solution mining technology with self-resonating cavitating water jets is described in this paper. It can generate three main physical effects： helical flow dissolution, self-resonating cavitating jet erosion, and ultrasonic waves. A self-resonating cavitating nozzle was also designed with the principles based on theory of fluid transients and hydro-acoustics. Under ambient pressure, the experimental results show that the impulse amplitude of pressure reaches a peak at a standoff distance of 5-13 times the nozzle outlet diameter and the cutting ability of self-resonating cavitating jets is twice that of conventional jets under the same conditions. Compared with the conventional mining method, the field test indicates that rapid solution mining technology with self-resonating cavitating jets can speed the construction by more than 2 times at the pocket stage of cavern development.展开更多
德国思泰电子的通信网关技术应用到了＂Orgelelektronik System Eule＂电子风琴系统中,使得CAN-Ethernet Gateway（CAN转以太网网关）与风琴的灵动相得益彰。电子风琴系统的基本原理：在风琴的控制中心,电子式记录所有按键、踏板、寄存...德国思泰电子的通信网关技术应用到了＂Orgelelektronik System Eule＂电子风琴系统中,使得CAN-Ethernet Gateway（CAN转以太网网关）与风琴的灵动相得益彰。电子风琴系统的基本原理：在风琴的控制中心,电子式记录所有按键、踏板、寄存器与及振动器的动作,记录的信息建立起输入镜像,并作为控制台发送到风琴的输出镜像。在风琴每一个风箱里都有一个磁铁驱动模块连接着,而所有的磁铁驱动模块又与控制台相连接。磁铁驱动模块的微控制器过滤出它确认的风箱信号,于是风琴管能够鸣响乐曲。展开更多
基金support from the Projects of EU-CHINA Energy and Environment Program(Europe Aid-120723-D-SV-CN)the Ph.D Programs Foundation of Ministry of Education of China (No.20070425006)
文摘Rapid solution mining is the key to cavern construction in salt formations. Rapid solution mining technology with self-resonating cavitating water jets is described in this paper. It can generate three main physical effects： helical flow dissolution, self-resonating cavitating jet erosion, and ultrasonic waves. A self-resonating cavitating nozzle was also designed with the principles based on theory of fluid transients and hydro-acoustics. Under ambient pressure, the experimental results show that the impulse amplitude of pressure reaches a peak at a standoff distance of 5-13 times the nozzle outlet diameter and the cutting ability of self-resonating cavitating jets is twice that of conventional jets under the same conditions. Compared with the conventional mining method, the field test indicates that rapid solution mining technology with self-resonating cavitating jets can speed the construction by more than 2 times at the pocket stage of cavern development.
文摘德国思泰电子的通信网关技术应用到了＂Orgelelektronik System Eule＂电子风琴系统中,使得CAN-Ethernet Gateway（CAN转以太网网关）与风琴的灵动相得益彰。电子风琴系统的基本原理：在风琴的控制中心,电子式记录所有按键、踏板、寄存器与及振动器的动作,记录的信息建立起输入镜像,并作为控制台发送到风琴的输出镜像。在风琴每一个风箱里都有一个磁铁驱动模块连接着,而所有的磁铁驱动模块又与控制台相连接。磁铁驱动模块的微控制器过滤出它确认的风箱信号,于是风琴管能够鸣响乐曲。
