8237-1246 ProTech-GII系列超速检测系统

描述

8237-1246 ProTech-GII系列超速检测系统

8237-1246是一款ProTech-GII系列超速检测系统是一种超速安全装置，旨在在检测到超速或超加速事件时安全关闭各种尺寸的蒸汽、燃气和水力涡轮机。该设备通过主动或被动MPU（电磁传感器）精确监控涡轮转子的速度和加速度，并向涡轮的跳闸阀或相应的跳闸系统发出停机命令。

具体来说，ProTech-GII超速检测系统提供两种双表决脱扣继电器输出，采用2选3的架构，或三个独立的非表决脱扣继电器输出，8237-1246带有独立的报警继电器，4-20mA速度读数和Modbus®通讯，使其易于集成到任何涡轮机安全系统中。

8237-1246的微处理器会对每个模块的速度传感器输入使用特殊的MPU明线检测电路，在涡轮机运行前验证MPU是否正确连接，以及特殊的速度损失检测逻辑，在涡轮机运行期间验证MPU功能。此外，该系统还具有抗硫污染能力，采用了一种特殊的保形涂层材料，对H2S和二氧化硫气体具有良好的长期防护性能。

ProTech-GII超速检测系统有两种安装型式，即面板安装和壁式安装，可以安装在标准的24英寸（610毫米）的柜体前面板上，也可以安装在靠近透平机组的壳体或者导轨上。这种设计使得设备在一个或者两个电源可用的情况下均可进行全部操作。

8237-1246 ProTech-GII系列超速检测系统

The ProTech-GII series Speed Detection system 8237-1246 is a speed safety device designed to safely shut down steam, gas and hydraulic turbines of all sizes when an overspeed or superacceleration event is detected. The device precisely monitors the speed and acceleration of the turbine rotor via an active or passive MPU (electromagnetic sensor) and sends a stop command to the turbine’s gate jump valve or the corresponding trip system.

Specifically, the ProTech-GII overspeed detection system offers two dual voting trip relay outputs in a 2 out of 3 architecture, or three separate non-voting trip relay outputs, the 8237-1246 with separate alarm relays, 4-20mA speed readings, and Modbus® communication. Make it easy to integrate into any turbine safety system.

The 8237-1246’s microprocessor uses a special MPU open-wire detection circuit for each module’s speed sensor input to verify that the MPU is properly connected before turbine operation, as well as special speed loss detection logic to verify MPU function during turbine operation. In addition, the system is also resistant to sulfur pollution, using a special conformal coating material, which has good long-term protection against H2S and sulfur dioxide gases.

The ProTech-GII overspeed detection system is available in two mounting types, panel mount and wall mount, which can be mounted on the standard 24-inch (610 mm) front panel of the cabinet, or on the housing or rail close to the turbine unit. This design allows the device to operate fully when one or both power supplies are available.