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進口超低溫電磁閥在LNG應(yīng)用中有什么特征∣德國萊克 LIK品牌
發(fā)布時間:2026/8/25
進口超低溫電磁閥（LNG 工況）應(yīng)用特征
Product Name：Imported Cryogenic Solenoid Valve for LNG Service
一、閥體與材質(zhì)特征 Body & Material Characteristics
中文：LNG 介質(zhì)溫度低至‑196℃，閥體選用耐深冷沖擊鍛 / 鑄不銹鋼（304、316L），杜絕低溫冷脆開裂；閥內(nèi)件采用低溫專用不銹鋼，密封件選用耐低溫特種 PTFE、PCTFE，避免低溫硬化、失去彈性，保證長期可靠密封。閥體結(jié)構(gòu)緊湊，長頸散熱閥蓋設(shè)計，阻隔冷量向上傳導(dǎo)，防止線圈結(jié)冰結(jié)霜、凍損電磁驅(qū)動部件。
English：LNG medium temperature reaches as low as ‑196℃. The valve body adopts forged/cast cryogenic‑resistant stainless steel (304,316L) to prevent brittle fracture under ultra‑low temperature. Trim uses special low‑temperature stainless steel. Seals adopt cryogenic‑resistant special PTFE and PCTFE to avoid hardening and loss of elasticity at low temperature and ensure long‑term reliable sealing. Compact body structure with extended neck bonnet blocks upward cold conduction and prevents coil frosting, icing and freezing damage to electromagnetic components.
二、長頸閥蓋冷橋阻隔特征 Extended Bonnet Cold‑bridge Isolation
中文：標(biāo)配加長型長頸閥蓋，形成冷阻隔離段，將低溫介質(zhì)與上部電磁線圈、動鐵芯隔離；有效阻斷冷量傳導(dǎo)至執(zhí)行部件，避免線圈結(jié)冰、水汽凝露短路，保障電磁閥在‑196℃持續(xù)穩(wěn)定通電啟閉，是 LNG 深冷工況最核心結(jié)構(gòu)特點。
English：Equipped with standard extended long neck bonnet to form a cold‑resistance isolation section, separating low‑temperature medium from upper electromagnetic coil and moving iron core. It effectively blocks cold transfer to actuator parts, prevents coil icing, condensation and short‑circuit, and ensures stable energized opening & closing continuously at ‑196℃, which is the core structural feature for LNG cryogenic working conditions.
三、密封性能特征 Sealing Performance
中文：采用軟密封結(jié)構(gòu)，低溫下密封面不變形、不硬化；閥座密封面精度研磨，關(guān)閉后零外漏、內(nèi)漏量極低，滿足 LNG 氣化站、卸車、增壓、BOG 回收嚴(yán)格泄漏管控要求；不允許介質(zhì)沿閥桿上竄結(jié)霜，杜絕安全隱患。
English：Adopt soft‑seal structure; sealing surface will not deform or harden under cryogenic condition. Precisely lapped valve seat realizes near‑zero external leakage and extremely low internal leakage after shut‑off, meeting strict leakage control requirements of LNG vaporizing station, unloading, pressurization and BOG recovery. Prevent medium creeping along stem and frosting to eliminate potential safety hazards.
四、驅(qū)動與防爆特征 Actuation & Explosion‑proof Feature
中文：LNG 屬于易燃易爆危險介質(zhì)，線圈選用低溫防爆線圈，防爆等級 ExdⅡCT6/Exia 本安型；低溫工況下線圈絕緣穩(wěn)定，不會因溫差老化失效；可實現(xiàn)常開 NO、常閉 NC 兩種通電 / 失電安全啟閉模式，適配 LNG 工藝聯(lián)鎖切斷邏輯。
English：LNG is flammable and explosive hazardous medium. The coil adopts cryogenic explosion‑proof coil with ExdⅡCT6 flame‑proof or Exia intrinsic‑safe grade. Coil insulation remains stable at low temperature without aging and failure caused by temperature difference. Normally Open (NO) and Normally Closed (NC) safety on‑off modes are available to match LNG process interlock shut‑off logic.
五、流通與工況適配特征 Flow & Working‑condition Adaptation
中文：流道設(shè)計流暢，減少 LNG 介質(zhì)節(jié)流閃蒸、氣液兩相沖擊；允許介質(zhì)氣液混合態(tài)（LNG 液體 + BOG 閃蒸氣）穩(wěn)定通斷；可適配 LNG 卸車、儲罐進出液、氣化調(diào)壓、BOG 回收、緊急切斷等典型工藝；耐壓適配 LNG 管道常用壓力等級。
English：Smooth flow channel design reduces LNG throttling flash vaporization and gas‑liquid two‑phase impact. Stable on‑off for gas‑liquid mixed medium (liquid LNG + flashed BOG vapor). Suitable for typical processes such as LNG unloading, tank inlet/outlet, vaporization & pressure regulation, BOG recovery and emergency shut‑off, and compatible with conventional pressure ratings of LNG pipelines.
六、耐溫差、抗交變冷沖擊特征 Thermal Shock Resistance
中文：LNG 工藝存在頻繁啟停、冷熱交替，閥門能夠承受常溫↔‑196℃反復(fù)交變冷沖擊，材質(zhì)金相穩(wěn)定，不易出現(xiàn)縫隙泄漏；低溫下啟閉力矩穩(wěn)定，不會出現(xiàn)卡滯、咬死現(xiàn)象，適合間歇式 LNG 氣化站頻繁動作工況。
English：LNG process features frequent start‑stop and alternating hot‑cold cycles. The valve can withstand repeated thermal shock between ambient temperature and ‑196℃ with stable material metallurgy and low risk of gap leakage. Stable switching torque at low temperature without sticking or seizure, suitable for frequent operation in intermittent LNG vaporizing stations.
七、安裝與維護特征 Installation & Maintenance
中文：長頸結(jié)構(gòu)預(yù)留保溫層安裝空間，閥體可整體包裹保冷層，不影響上部電磁部件工作；模塊化線圈組件，無需拆卸管道即可在線更換線圈，維護簡單，減少 LNG 裝置停機損失。
English：Extended neck reserves space for thermal insulation wrapping. The valve body can be fully covered with cold insulation without interfering with upper electromagnetic parts. Modular coil assembly allows on‑line coil replacement without pipeline disassembly, easy maintenance and less downtime loss of LNG plant.
八、適用典型 LNG 工況 Typical LNG Applications
中文：LNG 氣化站緊急切斷、儲罐進出液控制、槽車卸車管路、BOG 回收管路、低溫增壓回路、LNG 加注管路等。
English：Emergency shut‑off of LNG vaporizing station, tank inlet & outlet control, tanker unloading pipeline, BOG recovery pipeline, cryogenic pressurization loop, LNG filling pipeline, etc.
選型要點 Selection Tips（中英對照）
中文：1、介質(zhì)溫度必須覆蓋‑196℃；2、必須帶長頸隔熱閥蓋；3、密封材質(zhì)指定耐低溫 PTFE/PCTFE；4、防爆等級滿足 ExdⅡCT6；5、確認(rèn)常閉 NC / 常開 NO 安全模式；6、允許氣液兩相介質(zhì)；7、耐壓匹配 LNG 管線設(shè)計壓力。
English：1. Medium temperature range must cover ‑196℃；2. Extended heat‑insulating bonnet is mandatory；3. Seal material to be cryogenic‑resistant PTFE/PCTFE；4. Explosion‑proof grade ExdⅡCT6；5. Confirm safety mode NC/NO；6. Compatible with gas‑liquid two‑phase medium；7. Pressure rating matches LNG pipeline design pressure.
Product Name：Imported Cryogenic Solenoid Valve for LNG Service
Brand：Germany LIK 德國萊克
一、閥體與材質(zhì)特征 Body & Material Characteristics
中文：LNG 介質(zhì)溫度低至‑196℃，閥體選用耐深冷沖擊鍛 / 鑄不銹鋼（304、316L），杜絕低溫冷脆開裂；閥內(nèi)件采用低溫專用不銹鋼，密封件選用耐低溫特種 PTFE、PCTFE，避免低溫硬化、失去彈性，保證長期可靠密封。閥體結(jié)構(gòu)緊湊，長頸散熱閥蓋設(shè)計，阻隔冷量向上傳導(dǎo)，防止線圈結(jié)冰結(jié)霜、凍損電磁驅(qū)動部件。
English：LNG medium temperature reaches as low as ‑196℃. The valve body adopts forged/cast cryogenic‑resistant stainless steel (304,316L) to prevent brittle fracture under ultra‑low temperature. Trim uses special low‑temperature stainless steel. Seals adopt cryogenic‑resistant special PTFE and PCTFE to avoid hardening and loss of elasticity at low temperature and ensure long‑term reliable sealing. Compact body structure with extended neck bonnet blocks upward cold conduction and prevents coil frosting, icing and freezing damage to electromagnetic components.
二、長頸閥蓋冷橋阻隔特征 Extended Bonnet Cold‑bridge Isolation
中文：標(biāo)配加長型長頸閥蓋，形成冷阻隔離段，將低溫介質(zhì)與上部電磁線圈、動鐵芯隔離；有效阻斷冷量傳導(dǎo)至執(zhí)行部件，避免線圈結(jié)冰、水汽凝露短路，保障電磁閥在‑196℃持續(xù)穩(wěn)定通電啟閉，是 LNG 深冷工況最核心結(jié)構(gòu)特點。
English：Equipped with standard extended long neck bonnet to form a cold‑resistance isolation section, separating low‑temperature medium from upper electromagnetic coil and moving iron core. It effectively blocks cold transfer to actuator parts, prevents coil icing, condensation and short‑circuit, and ensures stable energized opening & closing continuously at ‑196℃, which is the core structural feature for LNG cryogenic working conditions.
三、密封性能特征 Sealing Performance
中文：采用軟密封結(jié)構(gòu)，低溫下密封面不變形、不硬化；閥座密封面精度研磨，關(guān)閉后零外漏、內(nèi)漏量極低，滿足 LNG 氣化站、卸車、增壓、BOG 回收嚴(yán)格泄漏管控要求；不允許介質(zhì)沿閥桿上竄結(jié)霜，杜絕安全隱患。
English：Adopt soft‑seal structure; sealing surface will not deform or harden under cryogenic condition. Precisely lapped valve seat realizes near‑zero external leakage and extremely low internal leakage after shut‑off, meeting strict leakage control requirements of LNG vaporizing station, unloading, pressurization and BOG recovery. Prevent medium creeping along stem and frosting to eliminate potential safety hazards.
四、驅(qū)動與防爆特征 Actuation & Explosion‑proof Feature
中文：LNG 屬于易燃易爆危險介質(zhì)，線圈選用低溫防爆線圈，防爆等級 ExdⅡCT6/Exia 本安型；低溫工況下線圈絕緣穩(wěn)定，不會因溫差老化失效；可實現(xiàn)常開 NO、常閉 NC 兩種通電 / 失電安全啟閉模式，適配 LNG 工藝聯(lián)鎖切斷邏輯。
English：LNG is flammable and explosive hazardous medium. The coil adopts cryogenic explosion‑proof coil with ExdⅡCT6 flame‑proof or Exia intrinsic‑safe grade. Coil insulation remains stable at low temperature without aging and failure caused by temperature difference. Normally Open (NO) and Normally Closed (NC) safety on‑off modes are available to match LNG process interlock shut‑off logic.
五、流通與工況適配特征 Flow & Working‑condition Adaptation
中文：流道設(shè)計流暢，減少 LNG 介質(zhì)節(jié)流閃蒸、氣液兩相沖擊；允許介質(zhì)氣液混合態(tài)（LNG 液體 + BOG 閃蒸氣）穩(wěn)定通斷；可適配 LNG 卸車、儲罐進出液、氣化調(diào)壓、BOG 回收、緊急切斷等典型工藝；耐壓適配 LNG 管道常用壓力等級。
English：Smooth flow channel design reduces LNG throttling flash vaporization and gas‑liquid two‑phase impact. Stable on‑off for gas‑liquid mixed medium (liquid LNG + flashed BOG vapor). Suitable for typical processes such as LNG unloading, tank inlet/outlet, vaporization & pressure regulation, BOG recovery and emergency shut‑off, and compatible with conventional pressure ratings of LNG pipelines.
六、耐溫差、抗交變冷沖擊特征 Thermal Shock Resistance
中文：LNG 工藝存在頻繁啟停、冷熱交替，閥門能夠承受常溫↔‑196℃反復(fù)交變冷沖擊，材質(zhì)金相穩(wěn)定，不易出現(xiàn)縫隙泄漏；低溫下啟閉力矩穩(wěn)定，不會出現(xiàn)卡滯、咬死現(xiàn)象，適合間歇式 LNG 氣化站頻繁動作工況。
English：LNG process features frequent start‑stop and alternating hot‑cold cycles. The valve can withstand repeated thermal shock between ambient temperature and ‑196℃ with stable material metallurgy and low risk of gap leakage. Stable switching torque at low temperature without sticking or seizure, suitable for frequent operation in intermittent LNG vaporizing stations.
七、安裝與維護特征 Installation & Maintenance
中文：長頸結(jié)構(gòu)預(yù)留保溫層安裝空間，閥體可整體包裹保冷層，不影響上部電磁部件工作；模塊化線圈組件，無需拆卸管道即可在線更換線圈，維護簡單，減少 LNG 裝置停機損失。
English：Extended neck reserves space for thermal insulation wrapping. The valve body can be fully covered with cold insulation without interfering with upper electromagnetic parts. Modular coil assembly allows on‑line coil replacement without pipeline disassembly, easy maintenance and less downtime loss of LNG plant.
八、適用典型 LNG 工況 Typical LNG Applications
中文：LNG 氣化站緊急切斷、儲罐進出液控制、槽車卸車管路、BOG 回收管路、低溫增壓回路、LNG 加注管路等。
English：Emergency shut‑off of LNG vaporizing station, tank inlet & outlet control, tanker unloading pipeline, BOG recovery pipeline, cryogenic pressurization loop, LNG filling pipeline, etc.
選型要點 Selection Tips（中英對照）
中文：1、介質(zhì)溫度必須覆蓋‑196℃；2、必須帶長頸隔熱閥蓋；3、密封材質(zhì)指定耐低溫 PTFE/PCTFE；4、防爆等級滿足 ExdⅡCT6；5、確認(rèn)常閉 NC / 常開 NO 安全模式；6、允許氣液兩相介質(zhì)；7、耐壓匹配 LNG 管線設(shè)計壓力。
English：1. Medium temperature range must cover ‑196℃；2. Extended heat‑insulating bonnet is mandatory；3. Seal material to be cryogenic‑resistant PTFE/PCTFE；4. Explosion‑proof grade ExdⅡCT6；5. Confirm safety mode NC/NO；6. Compatible with gas‑liquid two‑phase medium；7. Pressure rating matches LNG pipeline design pressure.
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