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  • Users: cryopumps
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  1. cryopumps

    Help me with Bolt Sizing Calculation

    Can someone tell me how to calulate the size and number of bolts I need to secure a cylinder that is holding internal pressure. Simply a cylinder with an OD and ID and one end is open that needs to have a plate screwed on to the top to hold the pressure. This should be very easy calculation.
  2. cryopumps

    PLEASE HELP, NEED TO DESIGN CAN

    My MBA friend is starting a company where he needs the following done: A small can (about 1/5 the size of a coke can) that will be a two piece assembly (just like a coke can). This can will hold a certain type of product which does not need internal pressure but this can must be sealed...
  3. cryopumps

    Help me

    I am a mechanical engineer and want to design an automated Bartender. This is just for fun. I need to know how I can control fluid in a pipe. The pipe will be set up verically and be blocked off by a valve or something. Then I need to do a control of somesort to tell the valve to move at a rate...
  4. cryopumps

    HELP BE WITH EASY ELECTRICAL QUESTION

    I am a mechanical engineer and want to design an automated Bartender. This is just for fun. I need to know how I can control fluid in a pipe. The pipe will be set up verically and be blocked off by a valve or something. Then I need to do a control of somesort to tell the valve to move at a rate...
  5. cryopumps

    Shroudless VS Shrouded Impellers

    In the industry that I work in they have always used shrouded impellers and I am now wondering why. Looking at the alternative and not using a shroud I see a a possibility of easy maching (CNC with great surface finishes), no efficiency loss from wear ring clearance, and less material so lower...
  6. cryopumps

    IS ANYONE INTERESTED IN CRYO PUMP INDUSTRY?

    I would like to know if there is anyone out there with experience in high pressure cryogenic pumps (LNP,LPG etc.) I work in this field and am looking for people to discuss technical issues. Thanks Cryopumps
  7. cryopumps

    HIGHER RPM's IN CENTRIFUGAL PUMPS

    I am a cryogenic pump engineer. I recentley designed a pump in the 1250 specific speed pump at 3560 RPM (7960 FT at 1570 GPM, liquid is LNG). The diameter of the impeller that we used came out to about 13 inches and it was a 14 stage pump. My question is would it be usefull to speed up the motor...

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