井下电磁阀的非接触式控制系统

发布时间：2018-04-01 00:37

本文选题：非接触式　切入点：电能传输　出处：《哈尔滨工业大学》2015年硕士论文

【摘要】：作为一种新型能量传输方式,非接触式耦合传输的能量发送端和接收端相互独立无机械和电气连接,但又通过磁场耦合具有能量相关性。基于它的这些优点,可将其应用于油井下、水下等能量发送端和接收端不适合直接连接的场合,从而提高系统工作的安全性。目前,地面与井下系统之间的电能传输主要使用电缆进行。对油井而言,采用该方式时电缆直接连接用电设备,可能产生电火花而石油又是易燃物,故容易引起爆炸。因此,非接触式耦合传输方式的出现为解决这一难题提供了新思路。本文研制了一种井下电磁阀的非接触式控制系统,主要包括非接触式电能传输系统、非接触式信号传输系统和电磁阀控制电路。其中,非接触式电能传输系统用于给电磁阀供电,当地面系统需要控制井下电磁阀时,控制命令通过非接触式信号传输系统送入井下的电磁阀控制电路中,控制电路再根据接收的命令使电磁阀与非接触式电能传输系统连接或断开,从而控制电磁阀的通断。其中,非接触式电能传输是基于高频逆变技术,而非接触式信号传输是基于FSK调制/解调技术。本文首先搭建了井下电磁阀的非接触式控制模拟实验系统,包括移动装置和初、次级耦合器;然后在此基础上设计了用于传输电能/信号的电路板和电磁阀控制板,最终实现了初、次级耦合器相对位置(垂直方向上)在85mm内能提供给电磁阀至少50W功率,而其在43mm内能提供给电磁阀至少100W功率,同时也实现了对电磁阀通断的控制。
[Abstract]:As a new type of energy transmission mode, the energy transmitter and receiver of non-contact coupling transmission are independent of each other without mechanical and electrical connection, but have energy correlation through magnetic field coupling. It can be used under oil wells, underwater energy transmitter and receiver is not suitable for direct connection, thus improving the security of the system. The electric power transmission between ground and downhole system is mainly carried out by cable. For oil wells, if the cable is directly connected to the electric equipment in this way, it may produce electric sparks and oil is flammable, so it is easy to cause explosion. The emergence of non-contact coupling transmission provides a new way to solve this problem. In this paper, a non-contact control system of underground solenoid valve is developed, which mainly includes contactless electric power transmission system. Contactless signal transmission system and solenoid valve control circuit. The contactless power transmission system is used to supply the solenoid valve, when the ground system needs to control the underground solenoid valve, The control command is sent into the control circuit of the solenoid valve downhole through the non-contact signal transmission system. The control circuit connects or disconnects the solenoid valve from the non-contact electric power transmission system according to the received command, thereby controlling the opening and breaking of the solenoid valve. Non-contact power transmission is based on high-frequency inverter technology, while non-contact signal transmission is based on FSK modulation / demodulation technology. Then the circuit board and the solenoid valve control board for transmitting electric energy / signal are designed, and the relative position (vertical direction) of the secondary coupler can provide at least 50W power to the solenoid valve in the 85mm, finally, the relative position of the secondary coupler can supply the solenoid valve with at least 50W power in the 85mm. It can provide at least 100W power to solenoid valve in 43mm, and it also realizes the control of solenoid valve opening and breaking.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE938

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