低温紧急切断阀
商品详情
性能特点
技术参数
低温紧急切断阀是一种专为深冷介质设计的特种安全阀门，采用气动/液动执行机构驱动，可在-196℃超低温环境下实现毫秒级快速切断。该产品通过权威SIL3安全认证，是LNG储运、空分设备、低温化工等领域的核心安全装置。
低温紧急切断阀核心技术特点：
超低温适应性
阀体采用ASTM A351 CF8M深冷处理
超低温延伸阀杆设计（-196℃～+80℃）
真空夹套防结冰结构
毫秒级切断性能
快速切断时间≤100ms
双作用气缸/液压缸驱动
爆破膜片式紧急触发装置
低温紧急切断阀零泄漏密封系统
金属波纹管+石墨复合密封
双向金属硬密封（DBB结构）
泄漏等级达到ISO 15848微泄漏A级
低温紧急切断阀多重安全保护
机械式强制复位装置
防火防静电设计（API 607+API 6FA）
防爆等级Ex dⅡCT6 Gb
低温紧急切断阀智能监控功能
阀位反馈信号（4-20mA）
切断动作计数器
低温紧急切断阀支持MODBUS RTU远程监控
关键术语对照表：
中文English深冷处理Cryogenic treatment双向截断排放Double Block & Bleed (DBB)波纹管密封Bellows seal强制复位Forced-reset爆破膜片Rupture disc微泄漏等级Micro-leakage class
注：本产品符合BS 6364低温阀门标准，可选配液氮冷却测试报告。阀体材料可根据工况选用Monel、Inconel等特种合金。
Cryogenic Emergency Shut-off Valve Product Overview
The cryogenic emergency shut-off valve is a specialized safety valve designed for ultra-low temperature service, featuring pneumatic/hydraulic actuation for millisecond-level fast closure at -196℃. Certified to SIL3 safety integrity level, it serves as critical safety equipment in LNG storage, air separation units cryogenic chemical processes.
Core Technical Features:
Ultra-low Temperature Adaptability
ASTM A351 CF8M cryogenically treated body
Extended stem design (-196℃～+80℃)
Vacuum-jacketed anti-icing structure
Millisecond Response
Fast closure time ≤100ms
Double-acting pneumatic/hydraulic actuator
Rupture disc emergency trigger
Zero-Leakage Sealing
Metal bellows + graphite composite seal
Bidirectional metal hard seal (DBB)
ISO 15848 micro-leakage Class A
Multi-level Safety
Mechanical forced-reset device
Fire-safe & anti-static (API 607+API 6FA)
Explosion-proof Ex dⅡCT6 Gb
Smart Monitoring
Position feedback (4-20mA)
Cycle counter
MODBUS RTU remote monitoring