Woodward 8237-2596 安全系統(tǒng)模塊
可配置的超速檢測(cè)系統(tǒng)
是一種可配置的超速檢測(cè)系統(tǒng)，旨在在感應(yīng)到超速或過(guò)加速事件時(shí)安全關(guān)閉各種尺寸的蒸汽、燃?xì)夂退啓C(jī)。提供兩個(gè)雙冗余脫扣繼電器輸出，使用三選二投票架構(gòu)，或三個(gè)獨(dú)立的無(wú)投票脫扣繼電器輸出，帶有單獨(dú)的警報(bào)繼電器、4–20 mA 速度讀數(shù)和 Modbus 通信，使這款超速設(shè)備易于集成到任何渦輪機(jī)安全系統(tǒng)中。此 ProTech GII 型號(hào)是隔板安裝、高壓/低壓、表決繼電器、表決輸入，具有用于蒸汽輪機(jī)保護(hù)的數(shù)學(xué)函數(shù)保護(hù)裝置。
這種快速作用的超速保護(hù)裝置設(shè)計(jì)用于與渦輪機(jī)控制或跳閘系統(tǒng)結(jié)合使用，以在渦輪機(jī)超速事件的情況下安全關(guān)閉渦輪機(jī)?？梢酝ㄟ^(guò) ProTech-GII 的冗余硬接線輸入和輸出信號(hào)或通過(guò)其三重冗余串行 Modbus 通信端口執(zhí)行與相關(guān)控制系統(tǒng)或工廠 DCS（分布式控制系統(tǒng)）的接口。 在線測(cè)試每個(gè) ProTech-GII 模塊都可以從模塊的前面板、Modbus 通信端口手動(dòng)測(cè)試，或通過(guò)其自動(dòng)測(cè)試?yán)坦δ茏詣?dòng)測(cè)試。ProTech-GII 允許用戶將超速測(cè)試配置為定期自動(dòng)執(zhí)行，一次測(cè)試每個(gè)模塊（A、B、C），并記錄每次測(cè)試的結(jié)果或暫停測(cè)試以檢測(cè)檢測(cè)到的錯(cuò)誤.跳閘、警報(bào)和超速日志ProTech-GII 日志功能記錄（保存到內(nèi)存）所有跳閘、警報(bào)、跳閘閥響應(yīng)時(shí)間和超速事件。跳閘日志功能使用滾動(dòng)緩沖區(qū)并將最近 50 次感測(cè)到的跳閘或警報(bào)事件和最近 20 次超速事件記錄到內(nèi)存中，以及相關(guān)的時(shí)間。每個(gè)日志文件都可以從設(shè)備的前面板查看，或通過(guò) ProTech-GII 服務(wù)工具程序下載到計(jì)算機(jī)。每個(gè)模塊都使用非易失性存儲(chǔ)器來(lái)確保保存所有記錄的事件，即使在斷電時(shí)也是如此。實(shí)時(shí)時(shí)鐘每個(gè) ProTech-GII 模塊都使用實(shí)時(shí)時(shí)鐘來(lái)確保準(zhǔn)確的時(shí)間記錄。模塊之間使用特殊的時(shí)間平均功能，以確保模塊間時(shí)鐘同步。
Configurable overspeed detection system
It is a configurable overspeed detection system designed to safely shut down steam, gas and water turbines of all sizes when an overspeed or over acceleration event is sensed. Two dual redundant trip relay outputs are provided, using a two out of three voting architecture, or three independent non voting trip relay outputs, with separate alarm relays, 4 – 20 mA speed readings, and Modbus communications, making this overspeed device easy to integrate into any turbine safety system. This ProTech GII model is a bulkhead mounted, high/low pressure, voting relay, voting input with a mathematical function protection device for steam turbine protection.
This fast acting overspeed protection device is designed to be used in conjunction with the turbine control or trip system to safely shut down the turbine in the event of a turbine overspeed event. The interface with the relevant control system or plant DCS (Distributed Control System) can be implemented through redundant hardwired input and output signals of the ProTech GII or through its triple redundant serial Modbus communication port. Online testing Each ProTech GII module can be manually tested from the front panel of the module, Modbus communication port, or automatically tested through its automatic test routine function. ProTech GII allows the user to configure overspeed tests to be performed automatically at regular intervals, testing each module (A, B, C) at a time, and recording the results of each test or pausing the test to detect detected errors Trip, Alarm, and Overspeed LogThe ProTech GII Log function records (saves to memory) all trip, alarm, trip valve response times, and overspeed events. The trip log function uses a rolling buffer and records the last 50 sensed trip or alarm events and the last 20 overspeed events into memory, along with the associated time. Each log file can be viewed from the front panel of the device or downloaded to the computer through the ProTech GII service utility. Each module uses non-volatile memory to ensure that all logged events are stored, even when power is lost. Real Time Clock Each ProTech GII module uses a real time clock to ensure accurate time recording. Special time averaging function is used between modules to ensure clock synchronization between modules.
