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进口超低温电磁阀在LNG应用中有什么特征∣德国莱克 LIK品牌
发布时间:2026/8/25
进口超低温电磁阀（LNG 工况）应用特征
Product Name：Imported Cryogenic Solenoid Valve for LNG Service
一、阀体与材质特征 Body & Material Characteristics
中文：LNG 介质温度低至‑196℃，阀体选用耐深冷冲击锻 / 铸不锈钢（304、316L），杜绝低温冷脆开裂；阀内件采用低温专用不锈钢，密封件选用耐低温特种 PTFE、PCTFE，避免低温硬化、失去弹性，保证长期可靠密封。阀体结构紧凑，长颈散热阀盖设计，阻隔冷量向上传导，防止线圈结冰结霜、冻损电磁驱动部件。
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、长颈阀盖冷桥阻隔特征 Extended Bonnet Cold‑bridge Isolation
中文：标配加长型长颈阀盖，形成冷阻隔离段，将低温介质与上部电磁线圈、动铁芯隔离；有效阻断冷量传导至执行部件，避免线圈结冰、水汽凝露短路，保障电磁阀在‑196℃持续稳定通电启闭，是 LNG 深冷工况最核心结构特点。
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：采用软密封结构，低温下密封面不变形、不硬化；阀座密封面精度研磨，关闭后零外漏、内漏量极低，满足 LNG 气化站、卸车、增压、BOG 回收严格泄漏管控要求；不允许介质沿阀杆上窜结霜，杜绝安全隐患。
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、驱动与防爆特征 Actuation & Explosion‑proof Feature
中文：LNG 属于易燃易爆危险介质，线圈选用低温防爆线圈，防爆等级 ExdⅡCT6/Exia 本安型；低温工况下线圈绝缘稳定，不会因温差老化失效；可实现常开 NO、常闭 NC 两种通电 / 失电安全启闭模式，适配 LNG 工艺联锁切断逻辑。
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、流通与工况适配特征 Flow & Working‑condition Adaptation
中文：流道设计流畅，减少 LNG 介质节流闪蒸、气液两相冲击；允许介质气液混合态（LNG 液体 + BOG 闪蒸气）稳定通断；可适配 LNG 卸车、储罐进出液、气化调压、BOG 回收、紧急切断等典型工艺；耐压适配 LNG 管道常用压力等级。
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、耐温差、抗交变冷冲击特征 Thermal Shock Resistance
中文：LNG 工艺存在频繁启停、冷热交替，阀门能够承受常温↔‑196℃反复交变冷冲击，材质金相稳定，不易出现缝隙泄漏；低温下启闭力矩稳定，不会出现卡滞、咬死现象，适合间歇式 LNG 气化站频繁动作工况。
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、安装与维护特征 Installation & Maintenance
中文：长颈结构预留保温层安装空间，阀体可整体包裹保冷层，不影响上部电磁部件工作；模块化线圈组件，无需拆卸管道即可在线更换线圈，维护简单，减少 LNG 装置停机损失。
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、适用典型 LNG 工况 Typical LNG Applications
中文：LNG 气化站紧急切断、储罐进出液控制、槽车卸车管路、BOG 回收管路、低温增压回路、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.
选型要点 Selection Tips（中英对照）
中文：1、介质温度必须覆盖‑196℃；2、必须带长颈隔热阀盖；3、密封材质指定耐低温 PTFE/PCTFE；4、防爆等级满足 ExdⅡCT6；5、确认常闭 NC / 常开 NO 安全模式；6、允许气液两相介质；7、耐压匹配 LNG 管线设计压力。
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 德国莱克
一、阀体与材质特征 Body & Material Characteristics
中文：LNG 介质温度低至‑196℃，阀体选用耐深冷冲击锻 / 铸不锈钢（304、316L），杜绝低温冷脆开裂；阀内件采用低温专用不锈钢，密封件选用耐低温特种 PTFE、PCTFE，避免低温硬化、失去弹性，保证长期可靠密封。阀体结构紧凑，长颈散热阀盖设计，阻隔冷量向上传导，防止线圈结冰结霜、冻损电磁驱动部件。
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、长颈阀盖冷桥阻隔特征 Extended Bonnet Cold‑bridge Isolation
中文：标配加长型长颈阀盖，形成冷阻隔离段，将低温介质与上部电磁线圈、动铁芯隔离；有效阻断冷量传导至执行部件，避免线圈结冰、水汽凝露短路，保障电磁阀在‑196℃持续稳定通电启闭，是 LNG 深冷工况最核心结构特点。
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：采用软密封结构，低温下密封面不变形、不硬化；阀座密封面精度研磨，关闭后零外漏、内漏量极低，满足 LNG 气化站、卸车、增压、BOG 回收严格泄漏管控要求；不允许介质沿阀杆上窜结霜，杜绝安全隐患。
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、驱动与防爆特征 Actuation & Explosion‑proof Feature
中文：LNG 属于易燃易爆危险介质，线圈选用低温防爆线圈，防爆等级 ExdⅡCT6/Exia 本安型；低温工况下线圈绝缘稳定，不会因温差老化失效；可实现常开 NO、常闭 NC 两种通电 / 失电安全启闭模式，适配 LNG 工艺联锁切断逻辑。
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、流通与工况适配特征 Flow & Working‑condition Adaptation
中文：流道设计流畅，减少 LNG 介质节流闪蒸、气液两相冲击；允许介质气液混合态（LNG 液体 + BOG 闪蒸气）稳定通断；可适配 LNG 卸车、储罐进出液、气化调压、BOG 回收、紧急切断等典型工艺；耐压适配 LNG 管道常用压力等级。
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、耐温差、抗交变冷冲击特征 Thermal Shock Resistance
中文：LNG 工艺存在频繁启停、冷热交替，阀门能够承受常温↔‑196℃反复交变冷冲击，材质金相稳定，不易出现缝隙泄漏；低温下启闭力矩稳定，不会出现卡滞、咬死现象，适合间歇式 LNG 气化站频繁动作工况。
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、安装与维护特征 Installation & Maintenance
中文：长颈结构预留保温层安装空间，阀体可整体包裹保冷层，不影响上部电磁部件工作；模块化线圈组件，无需拆卸管道即可在线更换线圈，维护简单，减少 LNG 装置停机损失。
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、适用典型 LNG 工况 Typical LNG Applications
中文：LNG 气化站紧急切断、储罐进出液控制、槽车卸车管路、BOG 回收管路、低温增压回路、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.
选型要点 Selection Tips（中英对照）
中文：1、介质温度必须覆盖‑196℃；2、必须带长颈隔热阀盖；3、密封材质指定耐低温 PTFE/PCTFE；4、防爆等级满足 ExdⅡCT6；5、确认常闭 NC / 常开 NO 安全模式；6、允许气液两相介质；7、耐压匹配 LNG 管线设计压力。
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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