大型水電廠主配壓閥培訓(xùn)資料(編輯修改稿)
2025-03-20 10:47 本頁面
【文章內(nèi)容簡介】 insproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥雙重過濾器 (一 )?雙重濾芯，可以在線更換濾芯；?油污指示 1. 測量過濾前后的油壓差值 2. 動作值： 35psi() 3. 電信號指示或就地指示 (顏色變化 )?旁路閥 如果濾芯前后壓差過大，旁路閥動作 (50psi)， 壓力油通過旁路閥直接供給比例閥，壓力油此時沒有過濾。CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥雙重過濾器 (二 )CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥雙重過濾器 (二 )?10微米過濾精度?電信號油污指示?旁路閥動作 :50psi()CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥油沖洗?將接力器短接 . 用軟管將接力器進(jìn)油直接接至回油 。?選擇左側(cè)或右側(cè)過濾器作為沖洗濾芯 。?供油 ,檢查管路有無漏油 。?沖洗系統(tǒng) 。?油質(zhì)合格后 , 將過濾器切至另一側(cè)的濾芯 。更換沖洗濾芯 。?關(guān)閉油源 , 結(jié)束油沖洗 .CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥啟動和放氣?將過濾器切換閥轉(zhuǎn)至最右側(cè) 。?打開油源 ,檢查管路有無漏油 。?通過調(diào)速器 ,控制接力器來回動作幾次 , 通過接力器放氣 。?打開平衡閥以及左側(cè)的放氣閥 , 放氣結(jié)束后,關(guān)閉放氣閥和平衡閥 .CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥在線更換? 打開備用濾芯的放氣閥 , 確認(rèn)內(nèi)部無空氣 . 當(dāng)油從放氣閥流出時 ,關(guān)閉放氣閥 。? 轉(zhuǎn)動切換閥至備用濾芯 。? 打開需要更換濾芯的放氣閥來將內(nèi)部液壓油放出 (此時平衡閥和另一側(cè)的放氣閥處于關(guān)閉狀態(tài) )? 取出濾芯 ,更換新濾芯 ,并安裝好 , 確保密封圈安裝正確 , 擰好外殼 。? 打開平衡閥給新濾芯充油 , 并打開新濾芯的放氣閥 , 放氣結(jié)束后 , 關(guān)閉放氣閥 。? 關(guān)閉平衡閥 , 新濾芯處于備用狀態(tài) .CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥比例閥CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥比例閥CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥比例閥CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥比例閥注意事項?比例閥內(nèi)部 LVDT， 位置監(jiān)視 。?指令信號、電源：屏蔽信號干擾。CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥LVDT? 電源： +/ 15VDC? 輸出： 0 ~ +/ 10VDCCompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥LVDTCompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥反饋放大器CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥反饋放大器CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥反饋放大器跳線設(shè)置? FC閥可能帶有多個 LVDT, 每個 LVDT相應(yīng)的配備一只比例閥和一個反饋放大器 。 LVDT可能位于恒壓端 ,也可能處于控制端 。? 處于不同端蓋的 LVDT, 其反饋放大器的跳線設(shè)置不同。設(shè)置原則為 : 閥芯向關(guān)閉方向移動時 , LVDT芯桿向外移動 , 則 跳線設(shè)置為 “A”,否則為 “B”. (“A is away”)? 跳線若設(shè)置錯誤 ,則接力器將會發(fā)生振蕩 .CompanyProprietaryThisdocumentcontainsproprietaryinformationtotheGECompanyandmaynotbeusedordisclosedtoothers,exceptwiththewrittenpermissionoftheGECompany.FC閥LVDT中位調(diào)整? 用萬用表測量 LVDT直流電壓反饋 .萬用表量程大于10VDC. 接反饋放大器的 Test Point 2(+), Test Point1 (). (Test Point 2 = 接線端子 5, Test Point 1 = 接線端子 4).
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