Metso Valm-818408

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

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).