GD2,
That is the flange load table for the new pump (Warman 14/12 STAH) that I sent. Yup you are correct, my issue was with the discharge flange loads (vertical). This wasn't necessarily due to the weight/load of the piping however, but likely an error in how I was modelling & analyzing the...
Hi GD2,
Thank you for your response. Regarding your questions:
The pump is a Warman STAH 14/12, which adheres to Hydraulic Institute 6, ISO 14001, OHSAS 18001, and is CE certified. The moments indicated on the anchor are negligible compared to the allowable moment loads provided by the pump...
1503-44 thank you for the additional information, this topic and issue is becoming a lot more clear to me now.
Snickster, I only just saw your latest post well after I made my last post. But I believe you summarized what is going on perfectly, certainly better than I did.
To summarize, while...
Hi Everyone,
Thank you all for your helpful input. I’ve concluded that I incorrectly included pressure thrust in my analysis. By anchoring the discharge flange of the pump, the software appears to calculate the total P*A pressure on the anchor, when most of this force is actually transferred to...
Snickster, thank you for your thorough analysis, I'm impressed. Your time and effort are greatly appreciated. I agree with your assessment that the hose can withstand the pressure thrust and doesn't likely need to be factored into this analysis. You're correct that adding a support to the bottom...
I have analyzed this same model where I have removed the pressure thrust from the analysis and in doing so it removes the majority of the loading from the pump flange and causes it too be within the allowable (~2500 lb). In this same simulation, the hanger support located on the elbow is engaged...
Agreed, we generally avoid using hoses or expansion joints unless necessary. However, the client prefers Townley hoses to reduce pump vibration and flange loads. Here’s an example of the hoses:
Assuming we set aside thermal loads and focus on pipe weight vs. pressure thrust, how do these...
Apologies for the poor quality image. The Fz is 7241 lbs down, the lateral loads are rather insignificant on the pump nozzle at 258 lbs.
I've played with a few different stiffness but the numbers I'm currently using are 40,000 lb/in axial stiffness and 20,000 lb/in lateral stiffness.
You are...
Hello Snickster,
Thank you for your response.
Just to clarify, it is a centrifugal pump. The lift-off doesn’t appear to be caused by thermal expansion or rotation around the second hanger. However, as per your third point, I have modeled pressure thrust on the rubber hose in AutoPIPE, and this...
Hello 1503-44,
The movement from the analysis is a little more than 0.125" (1/8"), which according to Autopipe then provides no support at the first hanger on the elbow. Maybe this is conservative as I'm unsure of the stiffness of these hoses. The second hanger support is still active and...
I have a rubber hose installed on the discharge of a pump, but its stiffness and flexibility characteristics are unknown. The client prefers these hoses for their wear resistance and ability to reduce both vibration-induced wear on the pump and loads on the nozzles. While these hoses are...
Apparently other options were discussed but this is the option that was went with. So for the sake of this post possible options to do with manipulating the scan data with the software would be most appreciated.
Hello,
I currently have a problem I am not completely sure the best and easiest way to go about. I have point cloud data of a tank and inside the tank there is a section of steel that has failed and peeled off and is hanging inside the tank. The client would like for us to piece back together a...
