進(jìn)口低溫截止閥,(德國奧萊斯OLES閥門)
【進(jìn)口低溫截止閥】詳細(xì)說明：
低溫門進(jìn)口低溫截止閥是指用于-40℃--196℃的低溫不銹鋼閥門，包括低溫球閥、低溫閘閥、低溫截止閥、低溫安全閥、低溫止回閥，低溫蝶閥，低溫針閥，低溫節(jié)流閥，低溫減壓閥等，主要用于乙烯，液化天然氣裝置，天然氣LPG LNG儲(chǔ)罐，接受基地及衛(wèi)星站，空分設(shè)備，石油化工尾氣分離設(shè)備，液氧、液氮、液氬、二氧化碳低溫貯槽及槽車、變壓吸附制氧等裝置上。輸出的液態(tài)低溫介質(zhì)如乙烯、液氧、液氫、液化天然氣、液化石油產(chǎn)品等，不但易燃易爆，而且在升溫時(shí)要?dú)饣瑲饣瘯r(shí)，體積膨脹數(shù)百倍。
Low Temperature Globe Valve for Low Temperature Door Import refers to low temperature stainless steel valves for - 40 ~196 ~C, including low temperature ball valves, low temperature gate valves, low temperature globe valves, low temperature safety valves, low temperature check valves, low temperature butterfly valves, low temperature needle valves, low temperature throttle valves, low temperature pressure relief valves, etc. It is mainly used in ethylene, liquefied natural gas plants, natural gas LPG. LNG storage tank, acceptance base and satellite station, air separation equipment, Petrochemical tail gas separation equipment, liquid oxygen, liquid nitrogen, liquid argon, carbon dioxide cryogenic storage tank and tank car, pressure swing adsorption oxygen production equipment. Output liquid cryogenic media such as ethylene, liquid oxygen, liquid hydrogen, liquefied natural gas, liquefied petroleum products, etc., are not only flammable and explosive, but also gasifiable when heating up. When gasifying, the volume expands hundreds of times
【進(jìn)口低溫截止閥】工作原理：
(1)低溫閥門進(jìn)口低溫截止閥的長閥桿具有保護(hù)低溫閥門填料函的功能，因?yàn)樘盍虾拿芊庑允堑蜏亻y的關(guān)鍵之一。該填料函處如果泄漏，將降低保冷效果，導(dǎo)致液化氣體氣化。在低溫狀態(tài)下隨著溫度的降低，填料彈性逐漸消失，防漏性能隨之下降，由于介質(zhì)滲漏造成填料與閥桿處結(jié)冰，影響閥桿正常操作同時(shí)也會(huì)因閥桿上下移動(dòng)而漿填料劃傷，引起嚴(yán)重泄漏。因此要保證填料臬部位的溫度在8℃以上。
(2) 低溫閥門的長閥桿蓋結(jié)構(gòu)便于纏繞保冷材料，防止低溫閥門冷能損失。
(3) 低溫閥門進(jìn)口低溫截止閥的長閥桿便于閥門主件通過閥蓋拆下進(jìn)行快速更換。由于設(shè)備冷段中的工藝管道和閥門經(jīng)常裝設(shè)在'冷箱'中，長頸閥蓋可以穿過'冷箱'壁伸出。更換閥門主件時(shí)，只需通過閥蓋進(jìn)行拆換，而不需拆卸閥體。閥體與管道焊接成一體，盡可能地減小了冷箱的滲漏，保證了閥門的密封性。
