化工儀器網(wǎng)
詳細介紹
*小金井KOGANEI氣缸部分型號：DAB-2125X16,DAB-2150X16,DAB-2200X16,
DAB-2250X16,DAB-2300X16
DAB-225X20,DAB-250X20,DAB-275X20,DAB-2100X20
DAB-2125X20,DAB-2150X20,DAB-2200X20,
DAB-2250X20,DAB-2300X20,DAB-2350X20
DAB-2400X20,DAB-2450X20,DAB-2500X20
DAB-225X25,DAB-250X25,DAB-275X25,DAB-2100X25
DAB-2125X25,DAB-2150X25,DAB-2200X25,
DAB-2250X25,DAB-2300X25,DAB-2350X25
DAB-2400X25,DAB-2450X25,DAB-2500X25
DAB-225X32,DAB-250X32,DAB-275X32,DAB-2100X32
DAB-2125X32,DAB-2150X32,DAB-2200X32,
DAB-2250X32,DAB-2300X32,DAB-2350X32,
DAB-2400X32,DAB-2450X32,DAB-2500X32,
DAB-225X40,DAB-250X40,DAB-275X40,DAB-2100X40,
DAB-2125X40,DAB-2150X40,DAB-2200X40,
DAB-2250X40,DAB-2250X40,DAB-2275X40,DAB-22100X40,
DAB-2125X40,DAB-2150X40,DAB-2200X40,
DAB-2250X40,DAB-2300X40,DAB-2350X40,
DAB-2400X40,DAB-2450X40,DAB-2500X40,
DAB-425X20,DAB-450X20,DAB-475X20,DAB-4100X20,
DAB-4250X16,DAB-4300X16,
DAB-4250X16,DAB-4300X16,
DAB-425X20,DAB-450X20,DAB-475X20,DAB-4100X20,
DAB-4125X20,DAB-4150X20,DAB-4200X20,
DAB-4250X20,DAB-4300X20,DAB-4350X20,
DAB-4400X20,DAB-4450X20,DAB-4500X20,
DAB-425X25,DAB-450X25,DAB-475X25,DAB-4100X25,
DAB-4125X25,DAB-4150X25,DAB-4200X25,
DAB-4250X25,DAB-4300X25,DAB-4350X25,
DAB-4400X25,DAB-4450X25,DAB-4500X25,
DAB-425X32,DAB-450X32,DAB-475X32,DAB-4100X32,
DAB-4125X32,DAB-4150X32,DAB-4200X32,
*小金井KOGANEI氣缸
DAB-4250X32,DAB-4300X32,DAB-4350X32,
DAB-4400X32,DAB-4450X32,DAB-4500X32,
DAB-425X40,DAB-450X40,DAB-475X40,DAB-4100X40,
DAB-4125X40,DAB-4150X40,DAB-4200X40,
DAB-4250X40,DAB-4300X40,DAB-4350X40
DAB-4400X40,DAB-4450X40,DAB-4500X40
DAD-25X20,DAD-50X20,DAD-75X20,DAD-100X20
DAD-125X20,DAD-150X20,DAD-200X20,
DAD-250X20,DAD-300X20,DAD-100X20,
DAD-350X20,DAD-400X20,
DAD-25X25,DAD-50X25,DAD-75X25,DAD-100X25,
DAD-125X25,DAD-150X25,DAD-200X25,
DAD-250X25,DAD-300X25,DAD-100X25,
DAD-350X25,DAD-400X25,
DAD-25X32,DAD-50X32,DAD-75X32,DAD-100X32,
DAD-125X32,DAD-150X32,DAD-200X32,
DAC-25X25,DAC-50X25,DAC-75X25,DAC-100X25,DAC-700X25,
DAC-125X25,DAC-150X25,DAC-200X25,DAC-250X25,
DAC-300X25,DAC-350X25,DAC-400X25,DAC-450X25,
DAC-500X25,DAC-550X25,DAC-600X25,DAC-650X25,
DAC-750X25,DAC-800X25,DAC-850X25,DAC-900X25,
DAC-950X25,DAC-1000X25,DAC-1050X25,
DAC-25X32,DAC-50X32,DAC-75X32,DAC-100X32,
DAC-125X32,DAC-150X32,DAC-200X32,DAC-250X32,
DAC-300X32,DAC-350X32,DAC-400X32,DAC-450X32,
DAC-500X32,DAC-550X32,DAC-600X32,DAC-650X32,
DAC-700X32,DAC-750X32,DAC-800X32,DAC-850X32,DAC-900X32,
DAC-950X32,DAC-1000X32,DAC-1050X32,
DAC-25X40,DAC-50X40,DAC-75X40,DAC-100X40,
DAC-125X40,DAC-150X40,DAC-200X40,DAC-250X40,
DAC-300X40,DAC-350X40,DAC-400X40,DAC-450X40,
DAC-500X40,DAC-550X40,DAC-600X40,DAC-650X40,
DAC-700X40,DAC-750X40,DAC-800X40,DAC-850X40,DAC-900X40,
DAC950X40,DAC1000X40,DAC1050X40 DAD-350X32,DAD-400X32,DAD-450X32,DAD-500X32,
DAD-25X40,DAD-50X40,DAD-75X40,DAD-100X40,
DAD-125X40,DAD-150X40,DAD-200X40,
DAD-250X40,DAD-300X40,DAD-100X40,
DAD-350X40,DAD-400X40,DAD-450X40,DAD-500X40,
DA-25X20,DA-50X20,DA-75X20,DA-100X20,DA-700X20,
DA-125X20,DA-150X20,DA-200X20,DA-250X20,
DA-300X20,DA-350X20,DA-400X20,DA-450X20,
DA-500X20,DA-550X20,DA-600X20,DA-650X20,
DA-750X20,DA-800X20,DA-850X20,DA-900X20,
DA-950X20,DA-1000X20,DA-1050X20,
DA-25X25,DA-50X25,DA-75X25,DA-100X25,
DA-125X25,DA-150X25,DA-200X25,DA-250X25,
DA-300X25,DA-350X25,DA-400X25,DA-450X25,
DA-500X25,DA-550X25,DA-600X25,DA-650X25,
DA-700X25,DA-750X25,DA-800X25,DA-850X25,DA-900X25,
DA-950X25,DA-1000X25,DA-1050X25,
DA-25X32,DA-50X32,DA-75X32,DA-100X32,
DA-125X32,DA-150X32,DA-200X32,DA-250X32,
DA-300X32,DA-350X32,DA-400X32,DA-450X32,
DA-500X32,DA-550X32,DA-600X32,DA-650X32,
DA-700X32,DA-750X32,DA-800X32,DA-850X32,DA-900X32
DA-950X32,DA-1000X32,DA-1050X32
DA-25X40,DA-50X40,DA-75X40,DA-100X40,
DA-125X40,DA-150X40,DA-200X40,DA-250X40,
DA-300X40,DA-350X40,DA-400X40,DA-450X40,
DA-500X40,DA-550X40,DA-600X40,DA-650X40,
DA-700X40,DA-750X40,DA-800X40,DA-850X40,DA-900X40,
DA-950X40,DA-1000X40,DA-1050X40,
DAC-25X20,DAC-50X20,DAC-75X20,DAC-100X20,DAC-700X20,
DAC-125X20,DAC-150X20,DAC-200X20,DAC-250X20
DAC-300X20,DAC-350X20,DAC-400X20,DAC-450X20,
DAC-500X20,DAC-550X20,DAC-600X20,DAC-650X20,
DAC-750X20,DAC-800X20,DAC-850X20,DAC-900X20,
DAC-950X20,DAC-1000X20,DAC-1050X20,
1．汽缸是鑄造而成的，汽缸出廠后都要經(jīng)過時效處理，使汽缸在住鑄造過程中所產(chǎn)生的內(nèi)應力*消除。如果時效時間短，那么加工好的汽缸在以后的運行中還會變形。
2．汽缸在運行時受力的情況很復雜，除了受汽缸內(nèi)外氣體的壓力差和裝在其中的各零部件的重量等靜載荷外，還要承受蒸汽流出靜葉時對靜止部分的反作用力，以及各種連接管道冷熱狀態(tài)下對汽缸的作用力，在這些力的相互作用下，汽缸易發(fā)生塑性變形造成泄漏。
3．汽缸的負荷增減過快，特別是快速的啟動、停機和工況變化時溫度變化大、暖缸的方式不正確、停機檢修時打開保溫層過早等，在汽缸中和發(fā)蘭上產(chǎn)生很大的熱應力和熱變形。
4．汽缸在機械加工的過程中或經(jīng)過補焊后產(chǎn)生了應力，但沒有對汽缸進行回火處理加以消除，致使汽缸存在較大的殘余應力，在運行中產(chǎn)生*的變形。
5．在安裝或檢修的過程中，由于檢修工藝和檢修技術的原因，使內(nèi)缸、汽缸隔板、隔板套及汽封套的膨脹間隙不合適，或是掛耳壓板的膨脹間隙不合適，運行后產(chǎn)生巨大的膨脹力使汽缸變形。
6．使用的汽缸密封劑質量不好、雜質過多或是型號不對；汽缸密封劑內(nèi)若有堅硬的雜質顆粒就會使密封面難以緊密的結合。
7．汽缸螺栓的緊力不足或是螺栓的材質不合格。汽缸結合面的嚴密性主要靠螺栓的緊力來實現(xiàn)的。機組的起?；蚴窃鰷p負荷時產(chǎn)生的熱應力和高溫會造成螺栓的應力松弛，如果應力不足，螺栓的預緊力就會逐漸減小。如果汽缸的螺栓材質不好，螺栓在長時間的運行當中，在熱應力和汽缸膨脹力的作用下被拉長，發(fā)生塑性變形或斷裂，緊力就會不足，使汽缸發(fā)生泄漏的現(xiàn)象。
8．汽缸螺栓緊固的順序不正確。一般的汽缸螺栓在緊固時是從中間向兩邊同時緊固，也就是從垂弧zui大處或是受力變形zui大的地方緊固，這樣就會把變形zui大的處的間隙向汽缸前后的自由端轉移，zui后間隙漸漸消失。如果是從兩邊向中間緊，間隙就會集中于中部，汽缸結合面形成弓型間隙，引起蒸汽泄漏。
化工儀器網(wǎng)