HYDROGEN TECHNOLOGIE - ON AIR

LH2 Storage and LH2 management
(System, Valves, Control, Cryogen, Connectivity, Predictive Maintenance)

Our H2-Experience (Gas & Liquid)

  • Shut-Off Valves
  • Check Valves
  • Flow Control Valves
  • Pressure Relief Valves
  • Safety Valves
  • Couplings

 

LH2 Tank system

 

Valve Types

Shut-off-Valve (SOV)

The principle of design and dimensioning of the Shut – off Valve (SOV) is a pneumatic or motor driven valve allowing restricting the flow of hydrogen in both directions.

The SOV is designed as a lift piston valve.

Types
  • Cryogenic 
  • Gaseous
Actuator
  • Solenoid
  • Motor-driven
  • Pneumatical supported
Characteristic
  • Minimal leckage
  • Quick Closing @Power loss
Parameter
  • Fluid pressure: LH2: 22 bar
  • Fluid temperature: 20 K < 370 K
  • Flow rate: 0,2 kg/s
  • Operating voltage: 12DC or 24VDC
  • Closing Time @ powerloss: <400ms
  • External leakage: ROM 1E-06 mbar l/s
  • Internal leakage: ROM 1E-04 mbar l/s
Flow Control Valve (FCV)

The flow control valve is a 3/2 valve type, with a electrical regulation of the gas flow.

Characteristic
  • Electrical controllable
  • PWM or Constant type
Parameter
  • Fluid temperature: 20 K < T < 370 K
  • Operating pressure: 10 bar
  • Pressure drop: <0,1 bar
  • External leackage: ROM 1E-06 mbar l/s
  • Internal leackage: ROM 1E-04 mbar l/s
Check Valve (CV)

The check valve (CV) is defined as automatic passive valve, which opens with forward flow and closes against reverse flow.

Characteristic
  • Minimal leckage
  • Minimal opening difference pressure
Parameter
  • Fluid temperature: 20 K < T < 370 K
  • Operating pressure: 10 bar
  • Pressure drop: <0,1 bar
  • External leackage: ROM 1E-06 mbar l/s
  • Internal leackage: ROM 1E-04 mbar l/s 
Pressure Relief Valve (PRV)
Safety Valve (SV)

The pressure relief (in this case boil-off valve) acts as a pressure relief valve in a hydrogen system in case of a rising pressure due to change in LH2 temperatures.

The safety valve acts also as a pressure relief valve, but could handle much more Flow in Emergency situations.

Characteristic
  • Minimal Leckage
  • Constant opening pressure
Parameter
  • Fluid temperature: 20 K < T < 370 K
  • Flow rate: e.g. 0,02 - 4 kg/s
  • Operating pressure: on customer demand
  • Reseating pressure: at least 5%, 10% tight
  • External leackage: ROM 1E-06 mbar l/s
  • Internal leackage: ROM 1E-04 mbar l/s
Digital Twin
Objective
  • Development of an applicable Digital Twin
  • Development of a SMART Component
  • In-situ applicable
  • Analysis, Condition Monitoring, Forecast
Status
  • Project started
  • Valve available
  • Cooperation with Frauenhofer
Delivery
  • End of project March 2022