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CATHODE PROTECTION SYSTEM FOR MAIN PIPE-LINES AGAINST CORROSION

机译:防腐蚀主要管线的阴极保护系统

摘要

FIELD: protection of pipe-lines. SUBSTANCE: cathode protection system presents unit-box made of high- and low-voltage compartments. High- voltage compartment has high-voltage disconnector of power line with blocked grounding knife, dry power transformer, high-voltage cutouts, valve dischargers to protect against lightning overvoltage and bushing insulators. This compartment has mechanical interlocking between high-voltage disconnector of power line and entrance door. Valve dischargers against lightning overvoltage are equipped with set of overvoltage limiters, activation counters and indicators. Low-voltage compartment is fed from dry power transformer and houses source of guaranteed power supply with step-down transformer, heating panel with automatic disconnection, hour counter controlled by input automatic unit of switching gear, meter of protective polarization potential on pipe-line, set of telemetry aids connected to monitoring and controlling unit- boxes mounted on gate valves. High-voltage compartment is fitted with automatic valve that releases air pressure in case of short-circuit with subsequent ignition and is provided with warning light equipment mounted on cover of unit-box. Meter of protective polarization potential on pipe-line comes in the form of current interrupter and high- resistance voltmeter. Low-voltage compartment also houses cathode protection station with cathode and anode outputs, cathode protection equipment and low-voltage switching gears. Current interrupter is fitted with manual and remote controls. Set of telemetry aids incorporates system of telecontrol, telewarning, overvoltage protection, automatic valve activation, telecontrol over protective potential of pipe-line, telemeasurement of output protective potential, of output current and voltage of low- voltage compartment, communication lines. EFFECT: improved operational qualities and enhanced functional reliability. 11 cl, 5 dwg
机译:领域:管道保护。物质:阴极保护系统提供了由高低压隔室制成的单元箱。高压室的电源线带有隔离的接地刀,高压干式变压器,高压断路器,用于防止雷击过电压的阀放电器和绝缘子套管的高压隔离开关。该隔室在电源线的高压隔离开关和入口门之间具有机械互锁。防雷过电压的阀门放电器配备了一组过压限制器,激活计数器和指示器。低压室由干式变压器供电,并装有带降压变压器的有保证电源,带自动断开功能的加热面板,由开关装置的输入自动装置控制的小时计数器,管道上的保护极化电位计,一套遥测辅助装置,连接到安装在闸阀上的监视和控制单元盒。高压室装有自动阀,该阀在发生短路并随后点火时会释放空气压力,并在单元箱盖上装有警示灯设备。管道上的保护极化电位计以电流中断器和高阻电压表的形式出现。低压室还装有带有阴极和阳极输出的阴极保护站,阴极保护设备和低压开关装置。电流断路器配有手动和远程控制。遥测辅助工具集包括遥测,遥测,过压保护,自动阀激活,遥测管道保护电位,遥测输出保护电位,低压舱输出电流和电压,通讯线路的系统。效果:提高了操作质量并增强了功能可靠性。 11厘升,5载重吨

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