Introduction
The piston rod acts to transfer reciprocating motion and power into work energy at the fluid end. The seals at the outside diameter moves the with piston and determines the limits of pressure. Lubricants ensure packing life and possible leaks. PRL=0.7854D_p^2P_d
PRL=0.7854D_p^2P_d
Where:
𝑃𝑅𝐿−Piston Rod Load [(bf)
𝐷𝑝−Piston Diameter (in)
𝑃𝑑−Maximum Allowable Pressure (psi)
Case Guide
Part 1: Create Case
- Select the Reciprocating Pump – Piston Rod Load application from the Pump Module
- To create a new case, click the “Add Case” button
- Enter Case Name, Location, Date and any necessary notes.
- Fill out all required Parameters.
- Make sure the values you are inputting are in the correct units.
- Click the CALCULATE button to overview results.
Input Parameters
- Piston Diameter (in)
- Maximum Allowable Pressure (psi)
Part 2: Outputs/Reports
- If you need to modify an input parameter, click the CALCULATE button after the change.
- To SAVE, fill out all required case details then click the SAVE button.
- To rename an existing file, click the SAVE As button. Provide all case info then click SAVE.
- To generate a REPORT, click the REPORT button.
- The user may export the Case/Report by clicking the Export to Excel icon.
- To delete a case, click the DELETE icon near the top of the widget.
Results
- Piston Road Load (lbf)
References
- ASME B31.4 – 1998 Edition “Pipeline Transportation Systems for Liquid Hydrocarbons and other Liquids”, Art. 404.1
- API 1117 – Movement of In-Service Pipelines
- API 5L, API 5LS and API 5LX – Specification of Pipe Grade
- ASTM – Various – Weld Joint Factor
- CFR Code Part 192
- MMS Regulations
- USDA-SCS Modified (Permissible Velocity of Water and Soil Erodibility)
- Pipeline Rules of Thumb Handbook