德國奧萊斯OLES進口低溫用截止閥

【進口低溫用截止閥】詳細(xì)說明：

不銹鋼低溫截止閥，特別是超低溫閥門，其工作溫度極低。在設(shè)計這類閥門時，除了應(yīng)遵循一般閥門的設(shè)計原則外，還有一些特殊的要求。不銹鋼低溫截止閥的設(shè)計要求: 1、閥門在低溫介質(zhì)及周圍環(huán)境溫度下應(yīng)具有長時間工作的能力。2、閥門不應(yīng)成為低溫系統(tǒng)的一個顯著熱源。這是因為熱量的流入除降低熱效率外，如流入過多，還會使內(nèi)部流體急速蒸發(fā)，產(chǎn)生異常升壓，造成危險。3、低溫介質(zhì)不應(yīng)對手輪操作及填料密封性能產(chǎn)生有害的影響。4、直接與低溫介質(zhì)接觸的閥門組合件應(yīng)具有防爆和防火結(jié)構(gòu)。  

Stainless steel Cryogenic Globe valves, especially ultra-cryogenic valves, operate at extremely low temperatures. In the design of such valves, in addition to the general valve design principles, there are also some special requirements. Design requirements of stainless steel Cryogenic Globe valve: 1. Valves should be able to work for a long time in low temperature medium and ambient temperature. 2. Valves should not be a significant source of heat for cryogenic systems. This is because in addition to reducing the thermal efficiency of heat inflow, if the inflow is too much, it will also make the internal fluid evaporate rapidly, resulting in abnormal pressure rise, causing danger. 3. Low temperature medium should not have harmful effect on handwheel operation and packing sealing performance. 4. Valve assemblies in direct contact with cryogenic media shall have explosion-proof and fire-proof structures.

【進口低溫用截止閥】結(jié)構(gòu)說明：

低溫及超低溫截止閥安裝在空分設(shè)備、LNG船、低溫液體貯運設(shè)備上面，對液氧、液氮、液氬、液化天然氣、液化石油氣等低溫和深冷介質(zhì)進行控制。低溫及超低溫截止閥采用加長閥桿、加長閥蓋的結(jié)構(gòu)，加長高度可以按照客戶要求加高，高壓低溫截止閥都帶有自動泄壓孔，以保證中腔壓力不會過高而產(chǎn)生危險。低溫截止閥有二種閥蓋設(shè)計形式。
*種是螺栓式閥蓋，其閥體與閥蓋用螺栓螺母連接，纏繞式墊片（316夾柔性石墨制造）?？蛻粲刑厥庖髸r也可采用金屬環(huán)連接。
第二種是焊接式閥蓋，其閥體與閥蓋用螺紋連接，全焊密封?？蛻粲刑厥庖髸r也可采用透焊連接。  

【進口低溫用截止閥】優(yōu)點：

1.結(jié)構(gòu)簡單，制造和維修比較方便。
2.工作行程小，啟閉時間短。
3.密封性好，密封面間磨擦力小，壽命較長。