Cryo Pumps

What is this?

-Transforms rotary motion into reciprocating motion.

-65° to 175° F internal temperature.

-Motor couples to the power end via belt and pulleys.

-Houses the crankshaft, bearings, & crosshead.

• Cold End/Liquid End

• Thermal Isolation Region

• Warm End/Power End

• Cavitation Region

What is this?

-Where liquid is received from the storage tank, pressurized, and discharged to the vaporizer.

-Consists of liquid end housing, piston, cylinder, inlet and outer bail valves (check).

• Cold End/Liquid End

• Warm End/Power End

• Sub-Cooler

• Thermal Isolation Region

What is this?

-A region between the warm end and the cold end.

-Serves as a heat barrier.

-It is necessary to maintain proper cold en temperature and prevent freezing lubricant in the warm end.

• Sub-Cooler

• Condenser

• Warm End

• Thermal Isolation Region

What is this?

-Formation of a gas pocket in the inlet chamber of a cryogenic pump, resulting when the temperature of the pumped liquid rises above its boiling point.

• Condensation

• Conduction

• Cremation

• Cavitation

What is this?

-The cooling of a liquid below its boiling point to prevent evaporation loss and pump cavitation.

-Usually accomplished by increasing the pressure of the cryogenic liquid.

• Warming

• Sub-Cooling

• Semi-Cooling

• Leg Warmers

What is the normal O2 pressure?

• 3000 PSIG

• 4000 PSIG

• 5000 PSIG

• 3200 PSIG

What is the normal N2 pressure?

• 3000 PSIG

• 3500 PSIG

• 5000 PSIG

• 4500 PSIG

What range is a cryogenic pump capable to pump up to 10,000 PSIG?

• 1.2-4.8 GPM

• 1.6-5.2 GPM

• 0.8-3.8 GPM

• 1.6-5.0 GPM

What is the maximum pressure a cryogenic pump can discharge?

• 5000 PSIG

• 10,000 PSIG

• 12,000 PSIG

• 15,000 PSIG

Name the safety feature.

-Shuts off cryogenic pump is discharge pressure exceeds 3200 PSI for O2 and 5000 PSI for N2.

• RV-2

• BD-2

• RV-3

• PS-1