描述
1.产品定位与核心功能
VALM-818408推测为超低温快速响应型阀门定位器,定位液化天然气(LNG)、空分设备及半导体制造真空系统,聚焦-196°C极低温工况适配、快速启闭防冷凝设计与真空兼容性。其核心功能包括:
控制性能:
-位置精度:±0.02%(全行程范围内,低温零漂移);
-响应时间:≤5ms(毫秒级切断能力)。
环境适应性:
-温度范围:-196°C至+100°C(液氮级超低温兼容);
-压力范围:真空至10MPa(双向密封)。
2.关键技术参数
项目典型规格(参考同类产品)
输入/输出
-输入信号:4–20mA DC(支持EtherCAT、PowerLink);
-输出类型:6%Mo不锈钢阀体+银-氧化钍涂层阀座(超低温韧性);
供电要求
-电压范围:12–36V DC(宽温区防爆认证Ex ia IICT4);
-功耗:≤5W(峰值),休眠模式<0.01W;
通信接口
-数字总线:IEEE 1588(精密时钟同步);
-无线扩展:Sub-1GHz(低温环境稳定传输)。
3.功能特性
超低温材料体系:
-核心材料:奥氏体不锈钢316LN(韧脆转变温度<-200°C);
-密封设计:金属C型密封环+氦检漏工艺(泄漏率<1×10⁻⁸Pa·m³/s)。
动态控制优化:
-算法集成:基于热力学的冷凝预测模型(防霜堵);
-驱动技术:压电陶瓷叠层执行器(行程<1mm时力输出>50N)。
真空兼容性:
-表面处理:离子轰击钝化(出气率<1×10⁻¹⁰Pa·m³/s);
-轴封结构:磁流体密封+钛溅射涂层(防真空漏磁)。
4.典型应用场景
能源与化工:
-LNG储罐气相平衡阀(耐液氮级低温);
-空分装置氧气/氮气切换阀(防爆炸性混合物形成)。
高科技制造:
-半导体ETCH真空阀(兼容CF₄等离子体工艺);
-超导磁体冷却系统氦气控制阀(耐4K极端低温)。
科研与航天:
-液氢贮箱排放阀(耐-253°C);
-宇宙模拟舱压力调节阀(真空-大气压快速切换)。

1.Product positioning and core functions
VALM-818408 is speculated to be an ultra-low temperature fast response valve locator,which locates liquefied natural gas(LNG),air separation equipment and semiconductor manufacturing vacuum systems,focusing on the adaptation of extremely low temperature conditions of-196°C,rapid opening and closing anti-condensation design and vacuum compatibility.Its core functions include:
Control performance:
-Position accuracy:±0.02%(within the entire stroke range,low temperature zero drift);
-Response time:≤5ms(millisecond cutoff capability).
Environmental adaptability:
-Temperature range:-196°C to+100°C(liquid nitrogen grade ultra-low temperature compatible);
-Pressure range:Vacuum to 10MPa(two-way seal).
2.Key technical parameters
Project Typical specifications(refer to similar products)
Input/Output
-Input signal:4–20mA DC(supports EtherCAT and PowerLink);
-Output type:6%Mo stainless steel valve body+silver-thorium oxide coated valve seat(ultra-low temperature toughness);
Power supply requirements
-Voltage range:12–36V DC(Wide temperature zone explosion-proof certification Ex ia IICT4);
-Power consumption:≤5W(peak),sleep mode<0.01W;
Communication interface
-Digital bus:IEEE 1588(precision clock synchronization);
-Wireless expansion:Sub-1GHz(stable transmission in low temperature environment).
3.Functional characteristics
Ultra-low temperature material system:
-Core material:austenitic stainless steel 316LN(tough and brittle transition temperature<-200°C);
-Seal design:Metal C-type sealing ring+helium leakage detection process(leakage rate<1×10⁻⁸Pa·m³/s).
Dynamic control optimization:
-Algorithm integration:Condensation prediction model based on thermodynamics(anti-frost blockage);
-Drive technology:Piezoelectric ceramic stacking actuator(force output>50N when stroke<1mm).
Vacuum compatibility:
-Surface treatment:ion bombardment passivation(air ejection rate<1×10⁻¹⁰Pa·m³/s);
-Shaft seal structure:magnetofluid seal+titanium sputtering coating(anti-vacuum leakage).
4.Typical application scenarios
Energy and Chemical Industry:
-LNG storage tank gas phase balance valve(resisting liquid nitrogen-grade low temperature);
-Oxygen/nitrogen switching valve for air separation device(forming of explosion-proof mixture).
High-tech manufacturing:
-Semiconductor ETCH vacuum valve(compatible with CF₄plasma process);
-Superconducting magnet cooling system helium control valve(resistant to 4K extreme low temperature).
Scientific Research and Aerospace:
-Liquid hydrogen storage tank drain valve(resistance to-253°C);
-Cosmic analog cabin pressure regulating valve(vacuum-atmospheric pressure quick switching).

