Metso Valm-818400

-位置精度:±0.06%(全行程范围内,抗热漂移);

-响应时间:≤25ms(高温介质下稳定响应)。

环境适应性:

-工作温度:-40°C至+850°C(宽温区耐高温型);

-介质兼容性:含H₂S酸性气体、高温蒸汽、熔融盐等。

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HART、EtherNet/IP、PROFINET);

-输出类型:气动放大器+镍基合金阀杆(热膨胀系数13×10⁻⁶/°C);

供电要求

描述

1.产品定位与核心功能

VALM-818400推测为耐腐蚀高温型阀门定位器,定位石油化工、电力及极端化学环境,聚焦800°C高温工况适配、抗硫化物腐蚀涂层与热力学动态平衡。其核心功能包括:

控制性能:

-位置精度:±0.06%(全行程范围内,抗热漂移);

-响应时间:≤25ms(高温介质下稳定响应)。

环境适应性:

-工作温度:-40°C至+850°C(宽温区耐高温型);

-介质兼容性:含H₂S酸性气体、高温蒸汽、熔融盐等。

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HART、EtherNet/IP、PROFINET);

-输出类型:气动放大器+镍基合金阀杆(热膨胀系数13×10⁻⁶/°C);

供电要求

-电压范围:24V DC(防爆认证Ex ia IIC T6);

-功耗:≤10W(峰值),休眠模式<0.05W;

通信接口

-数字总线:OPC UA、Modbus TCP/IP;

-无线扩展:NB-IoT(远程监测适用)。

3.功能特性

耐腐蚀与高温材料体系:

-核心材料:Haynes 230合金(抗硫化物腐蚀速率<0.1mm/year)+陶瓷绝缘层;

-密封设计:石墨浸渍PTFE填料(耐800°C长期使用)。

热力学管理:

-动态平衡:内置热管散热器(导热系数≥100 W/m·K);

-应变补偿:光纤光栅传感器实时监测阀体形变(误差<±0.02mm)。

安全与诊断:

-腐蚀监测:电化学阻抗谱(EIS)在线评估材料降解;

-超温保护:双金属片触发紧急断电(阈值可设至900°C)。

4.典型应用场景

能源与化工:

-燃气轮机排气阀(耐高温含硫燃气);

-加氢裂化反应器进料阀(兼容H₂+H₂S混合介质)。

电力与环保:

-煤气化炉合成气调节阀(耐渣油结焦);

-焚烧炉烟气控制阀(抗氯离子腐蚀)。

特种工艺:

-太阳能光热熔盐阀(耐600°C硝酸钾/钠混合盐);

-半导体扩散炉工艺气体阀(超高温真空工况)。

1.Product positioning and core functions

VALM-818400 is speculated to be a corrosion-resistant high-temperature valve positioner,which locates petrochemical,power and extreme chemical environments,focusing on the 800°C high-temperature working conditions adaptation,sulfide corrosion-resistant coating and thermodynamic dynamic balance.Its core functions include:

Control performance:

-Position accuracy:±0.06%(within the entire stroke range,heat drift resistance);

-Response time:≤25ms(stable response under high temperature medium).

Environmental adaptability:

-Operating temperature:-40°C to+850°C(wide temperature zone high temperature resistance type);

-Media compatibility:contains H₂S acid gas,high temperature steam,molten salt,etc.

2.Key technical parameters

Project Typical specifications(refer to similar products)

Input/Output

-Input signal:4–20mA DC(supports HART,EtherNet/IP,PROFINET);

-Output type:pneumatic amplifier+nickel-based alloy stem(thermal expansion coefficient 13×10⁻⁶/°C);

Power supply requirements

-Voltage range:24V DC(Explosion-proof Certified Ex ia IIC T6);

-Power consumption:≤10W(peak),sleep mode<0.05W;

Communication interface

-Digital bus:OPC UA,Modbus TCP/IP;

-Wireless extension:NB-IoT(for remote monitoring).

3.Functional characteristics

Corrosion-resistant and high-temperature material system:

-Core materials:Haynes 230 alloy(sulfide corrosion resistance rate<0.1mm/year)+ceramic insulation layer;

-Seal design:Graphite impregnated PTFE filler(resistant to 800°C long-term use).

Thermodynamics management:

-Dynamic balance:built-in heat pipe radiator(thermal conductivity≥100 W/m·K);

-Strain compensation:The fiber grating sensor monitors the valve body deformation in real time(Error<±0.02mm).

Safety and Diagnosis:

-Corrosion Monitoring:Electrochemical Impedance Spectroscopy(EIS)online evaluation of material degradation;

-Overtemperature protection:Bimetal plate triggers emergency power outage(threshold can be set to 900°C).

4.Typical application scenarios

Energy and Chemical Industry:

-Gas turbine exhaust valve(resistant to high temperature sulfur-containing gas);

-Hydrocracking reactor feed valve(compatible with H₂+H₂S mixed media).

Electricity and environmental protection:

-Syngas regulating valve for coal gasification furnace(residue coking);

-Incinerator flue gas control valve(resistant to chloride ion corrosion).

Special technology:

-Solar photothermal molten salt valve(resistant to 600°C potassium nitrate/sodium mixed salt);

-Semiconductor diffusion furnace process gas valve(ultra-high temperature vacuum condition).