How to Select Cryogenic Pumps                Image Credit: Price Pump Company | Almatec | Adixen   Cryogenic pumps are pumps designed to move coolants and cryogenic liquids. They are built to withstand and operate in extremely cold temperatures. Many of these pumps feature hermetically sealed designs to minimize heat leakage from the motor or contamination by process fluids into the...
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Q & A on Cryogenic Pumps

We asked our users for their input on Cryogenic Pumps. Here are the results of 55 users familiar with Cryogenic Pumps.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Design TrendsTop

Q:
What new technologies are influencing cryogenic pump design?
9 answers
Answers:

My opinion about two stage helium cryo (up 5000 liters per second): 1. old adsorber - 10000 hours , new adsorber - 20000 hours 2. regeneration time: old - 3- 4 hours, new - 20- 50 minues 3.Old helium cryo compressor - one cryo pump, new cryo compressor 3-4 cryopump. 4. Two-channels thermometer Si- diodes (measuring temperature of cryo pump, first and second stage)

~Ryszard P, Technical Support, Warsaw, Poland

Reliable High Quality Insulation, Efficient and reliable pumping

~Engineering, Design, Ahmedabad, India

Energy efficient when compared to the high pressure compressors.

~Soma S, Engineer, Chennai, India
New energy approaches. Environmentally acceptable cleaning
~H. Wayne H, Engineering Consultant, Knoxville, TN
High delivery rates, data acquisition of pumped material.
~Tom J, Project Manager, Willis, TX
LN bearing lubrication, N2 gas bearing.
~Sergey K, Project Manager, St.Petersburg, RUS
Inducer Design and NPSHR
~Robbie Z, Project Manager, Beijing, China

Use of lead based seals.

~Ranganath P, Design Engineer, Bangalore, India
Sealing systems
~Jan-Erik L, General Management, Bromma, Sweden

Q:
From your perspective, which companies are creating the most innovative cryogenic pumps?
8 answers
Answers:

I know only Varian, Ebara and Oksford from Austin, but very good compressors (compressor capsule) are made by Hitachi, not by Ebara. However, in my opinion, only small firms assembling good cryo pumps for individual clients create the most innovative cryo pumps. I buy relief valves, helium pipes, compressors, etc. in the global market. But individual software and size of flange from big companies is too expensive.

~Ryszard P, Technical Support, Warsaw, Poland

I have used Blackmer, Corker, LSI Triplex pumps, ACD pumps. Not sure what technologies they are developing.

~Tom J, Project Manager, Willis, TX

Ebara, Cryostar

~Engineering, Design, Kuala Lumpur, Malaysia
Cryomach, Sefco
~Ranganath P, Design Engineer, Bangalore, India
Matz Pumps
~Engineering, Design, Ahmedabad, India
CRYO ASIA
~Soma S, Engineer, Chennai, India
JC Carter
~Robbie Z, Project Manager, Beijing, China
CryoStar
~Sergey K, Project Manager, St.Petersburg, RUS

Applications and UseTop

Q:
What are some of the applications you have used a cryogenic pump for?
15 answers
Answers:

Cleaning "difficult to remove" surface deposits and scales. Applications in mining and drilling. Chemical processing.

~H. Wayne H, Engineering Consultant, Knoxville, TN

Transfer of cryogenic liquid to elevations, to convert the cryoliquid into high pressure gases.

~Engineering, Process/Production, nellore, India

For pumping liquid nitrogen in cooling systems, for LN tanks filling etc.

~Sergey K, Project Manager, St.Petersburg, RUS

Liquid Nitrogen will be pumped through high pressure vaporizer, from there it would be fed to the system through the cylinder.

~Soma S, Engineer, Chennai, India

Gas Cylinder Filling. (Piston type) Liq Transfer (Centrifugal)

~Sudhangsu M, Technical Support, Navi Mumbai, India

Provide nitrogen gas for a HIPping operation.

~Engineering, Process/Production, East Granby, CT

Clean vacuum, implantation.

~Ryszard P, Technical Support, Warsaw, Poland
Oxygen, Nitrogen and Argon
~Ranganath P, Design Engineer, Bangalore, India
Frac, oil well clean out.
~Tom J, Project Manager, Willis, TX
Air separation plants
~Jan-Erik L, General Management, Bromma, Sweden
Isostatic press
~Engineering, Other, Vasteras, Sweden
LCO2, LO2, LN2
~Engineering, Design, Ahmedabad, India
LNG Facility
~Robbie Z, Project Manager, Beijing, China
LNG transfer
~Engineering, Design, Kuala Lumpur, Malaysia
CO2
~Marketing/Sales, Montreal, Canada

Q:
Please share with us any “non-standard” applications that a cryogenic pump has been used for.
2 answers
Answers:

Fire and explosion protection in oil and gas fields.

~Sergey K, Project Manager, St.Petersburg, RUS
Fracturing an oil well.
~Tom J, Project Manager, Willis, TX

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of a cryogenic pump?
5 answers
Answers:

1. Regeneration pumps if vent is open (cryo pumps pumping dangerous gases) 2. Incorrect connection of 3-phase helium compressor. 3. Nitrogen for regeneration is not dry (cryo pumping corrosive gases).

~Ryszard P, Technical Support, Warsaw, Poland

Make sure any contractor is fully knowledgeable in fluid flow and thermodynamics of cryogenic fluids.

~H. Wayne H, Engineering Consultant, Knoxville, TN
Low NPSH will kill a pump.
~Ranganath P, Design Engineer, Bangalore, India

Hydraulic shock

~Sergey K, Project Manager, St.Petersburg, RUS
We have avoided these "errors" with good designs and applications.
~Tom J, Project Manager, Willis, TX

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
9 answers
Answers:

Automatic pump startup is preferred because pump would run for 15 minutes and stop for 45 minutes. During startup it should not require manual intervention for draining out the gas and starting of the pump.

~Soma S, Engineer, Chennai, India

Ability to pump various fluids from liquid nitrogen to supercritical carbon dioxide at rates of 20 to 60 gallons per minute.

~H. Wayne H, Engineering Consultant, Knoxville, TN
Very low 'left over' which lessen the stripping pump requirement.
~Engineering, Design, Kuala Lumpur, Malaysia
Easier access to hook up and discharge options from the web site.
~Tom J, Project Manager, Willis, TX

A small pump with best quality performance and long lifetime.

~Robbie Z, Project Manager, Beijing, China

Solve problems of sealing, bearing, superinsulation

~Sergey K, Project Manager, St.Petersburg, RUS
Pump without seals or seals that never fail!!!!!!
~Ranganath P, Design Engineer, Bangalore, India

Cylinder filling up to 300 bar .

~Sudhangsu M, Technical Support, Navi Mumbai, India
Ease of maintenance.
~Engineering, Process/Production, East Granby, CT

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of a cryogenic pump?
4 answers
Answers:
Always maintain the right pressure at the discharge. Seals frequently fail because of low or high pressure. Check flange deflection while installing. Use bellows in the connecting lines.
~Ranganath P, Design Engineer, Bangalore, India

1.Selection - while selecting, choose company with the closest service available 2. Usage - Do not get supply and return helium pipes wrong.

~Ryszard P, Technical Support, Warsaw, Poland

Automatic running of the pump with out manual intervention baseline requirement.

~Soma S, Engineer, Chennai, India

Seal and insulation problems.

~Sergey K, Project Manager, St.Petersburg, RUS

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using cryogenic pumps?
3 answers
Answers:

Wherever high pressure compressors are running can be replaced with a cryogenic pump.

~Soma S, Engineer, Chennai, India
Be careful about seal selection.
~Ranganath P, Design Engineer, Bangalore, India

I want to know companies who are able to produce and sell cryo pumps.

~Sergey K, Project Manager, St.Petersburg, RUS


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