原文：
随着我国石化工业的发展,阀门行业蝶阀产品的口径不断增大,已达到1m以至几米以上的直径。针对大口径阀门需要的启闭扭矩与速度,对阀门的控制方式除采用手动、气动和电动驱动形式外,液压传动与控制也得到了广泛采用。为了使蝶阀调节装置以更大扭矩满足大型煤电站、热电厂和石化行业的使用,研制了大型防爆蝶阀的电液伺服比例控制快关调节装置,该装置采用电液伺服比例控制技术,控制精度为1/600,{zd0}执行扭矩为100000N·m。 2、系统结构 大型防爆蝶阀的电液伺服比例控制快关调节装置是为适应石化工业日益发展的需要而研制开发的新型产品。主要由防爆控制柜、大口径蝶阀、液压伺服控制系统、机械传动机构和电气控制系统等组成。 2.1、液压伺服控制系统 液压伺服控制系统由齿轮泵、电机、联轴器、电液伺服比例阀、三位四通电磁换向阀、溢流阀、单向阀、节流阀、蓄能器、压力继电器、压力表、高压过滤器和油箱等元件组成。系统采用集成化模块化设计,系统安全压力由溢流阀设定。截止阀(HV5)的作用是释放系统压力油回油箱,节流阀用来调节系统开、关阀的速度,压力继电器设定系统油压控制的上下限点,泵采用进口高压低噪声的齿轮泵,立式安装,阀选用进口的螺纹插装阀使系统的内泄漏大大减少,节省能源,维修和安装方便。过滤器采用倒置的高压过滤器,结构紧凑,保证系统油液清洁和各种控制阀能正常动作。 高性能电液伺服比例阀为滑套结构,比例阀内四通阀芯可在滑套内滑动。滑套压进阀体内,对中弹簧使阀芯保持在中间位置,直线力马达克服弹簧的对中力使阀芯在两个方向上都可以偏离中间位置,平衡在一个新的位置。阀芯由集成有感应电子传感器的比例电磁铁进行闭环位置控制。阀芯位置闭环控制电子线路与脉宽调制驱动电子线路固化为一集成块,固定在伺服阀内。 当电气指令信号施加到阀芯位置控制集成块时,电子线路在直线力马达产生脉宽调制电流,振荡器使阀芯位置传感器励磁。经解调以后的阀芯位置信号和指令信号进行比较,使阀芯位置控制器产生电流输出给直线力马达,直线力马达驱动阀芯移动到指令位置。阀芯位置与指令信号成正比。当阀芯移动,使压力油P与A或B腔相通,压力油快速进入油缸的A或B腔,通过齿轮齿条推动蝶阀完成开启和快速关闭等调节动作。 液压伺服驱动执行扭矩为25～100kN·m,由液压泵站提供液压能,推动执行油缸完成蝶阀0°～90°的开闭动作。齿轮箱主轴顶部安装有电子角位移检测装置,能正确的检测出蝶阀的开闭角度,并能及时发出信号,指令电气系统停止执行油缸的开闭动作,控制精度为1/600。当电源切断后,执行机构还能用手动驱动机构开闭蝶阀。手动驱动机构的齿轮比≈1/138,{zd0}执行扭矩为5kN·m。蝶阀的开闭角度可通过齿轮箱顶部的角度指示盘中的指针目测确定。

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译文：
With the development of China's petrochemical industry, valve industry valve products caliber is increasing, and has reached more than 1m as well as a few meters in diameter. Need for large diameter valves open and close torque and speed, on valve control method than with manual, pneumatic and electric drive form, the hydraulic transmission and control has also been widely used. To make more torque butterfly valve adjustment device to meet the large-scale coal power stations, thermal power plants and petrochemical industries to use, develop a large proportion of explosion-proof control of electro-hydraulic servo valve Quick Closing adjustment device, which uses electro-hydraulic servo proportional control technology the control precision of 1 / 600, the largest implementation of torque 100000N · m. 2, the system structure Large explosion proportional control servo valve of the adjusting device is quick off the petrochemical industry to adapt to the needs of the growing research and development of new products. Mainly controlled by the explosion-proof cabinets, large diameter butterfly valve, hydraulic servo control systems, mechanical transmission and electric control system, etc.. 2.1, hydraulic servo control system Hydraulic servo control system consists of gear pumps, motors, couplings, servo proportional valve, the three four-way solenoid valve, relief valve, check valve, throttle valve, accumulator, pressure switch, pressure table, high pressure filters and fuel tank and other components formed. System is integrated modular design, system security by the relief valve set pressure. Valve (HV5) role is to release the system pressure oil back to tank, throttle-conditioning systems for opening and closing speed valves, hydraulic pressure control system relay set point upper and lower limits, high-pressure pump with low noise imported Gear pumps, vertical installation, valve made of imported threaded cartridge valve leakage within the system of greatly reduced, saving energy, maintenance and easy installation. High pressure filter with inverted filters, compact, clean oil to ensure the system and various control valves to operate correctly. The proportion of high-performance electro-hydraulic servo valve sleeve structure, four-way proportional spool valve within the slide in sleeve. Sleeve into the valve body pressure on the spring to the spool to keep in the middle, linear force motor to overcome the spring force on the spool in both directions can deviate from the middle to balance in a new location. Spool by the integrated electronic sensor proportional solenoid sensor closed loop position control. Spool position loop control circuit with pulse width modulation drive circuit cure for the blocks, fixed in the servo valve. When the electrical command signal applied to the spool position control manifold block, the electronic circuit in the linear force motor to generate pulse width modulated current, the oscillator so that spool position sensor excitation. The spool position signal after demodulation and instructions to compare the signal to the spool position controller generates the current output to the linear force motor, linear motor-driven power position of the spool moves to the instructions. Proportional to spool position and command signal. When the spool move, so the oil pressure P and A or B lumen, the pressure oil into the cylinder A fast or B chamber, through the rack and pinion to promote open and quickly close the valve to complete actions such as regulation. Hydraulic servo-driven implementation of the torque is 25 ~ 100kN · m, provided by the hydraulic pump station to promote the implementation of the complete fuel tank valve 0 ° ~ 90 ° of the opening and closing movements. Install the top shaft gear box with electronic angular displacement detection device can correctly detect the opening and closing valve angle, and timely signal to stop implementation of the fuel tank electrical system commands the opening and closing movements, the control precision of 1 / 600. When the power is cut off, the implementing agencies can manually open and close valve drive mechanism. Manual drive mechanism gear ratio ≈ 1 / 138, the largest implementation of the torque 5kN · m. Butterfly valve opening and closing angle gear box at the top through the perspective of visual instruction pointer to determine the session.