Upload
lethien
View
222
Download
3
Embed Size (px)
Citation preview
Real World Considerations for
Pump Design, Operation and
Maintenance
Steve Truitt, PE
Design Considerations
Operation
Troubleshooting
Maintenance and Op Staff involvement in design meetings
Piping design and Pipe Supports
Gauges!
Pressure and vacuum switches for PD pumps
Pulsation dampeners
Suction piping and suction lift applications
Independently support piping
Install valves on suction and discharge side for maintenance
If using mechanical joint couplings (Victaulic), must be rigid cut
Suction piping as short as possible
Use check valves when multiple pumps discharge to common header
Piping design
Penn Valley Pump Co., Inc.
Penn Valley Pump Co., Inc.
.
Poor piping design
On both suction and discharge sides of pump
Gauges provide diagnostic tools to troubleshoot pumping problems
Recommended for both suction and discharge sides of all PD pumps
Prevents pump damage due to blocked lines or inadvertent closed valve
Mounts to top of dampeners, clear of process liquid to improve gauge and switch life
.
• SS316 Body w/ EPDM Sleeve
•Adjustable Vacuum/Pressure Switches
•4” SS Gauge
•Glycercin fill for smooth gauge movement
•SS316 Fittings and Ball Valve
•Quick release air-fitting for easy dampener re-charging
Helpful for all PD pumps
Reduces vibrations and pulsations in piping
Can be used on suction
and discharge
Suction piping as short as possible
NPSH
Cavitation – reduced flow, knocking/gravel, pump damage
Suction lift
Pumps create low pressure
Vacuum tight valves
Straight, vertical pipe runs are best
Preventative Maintenance
Listen
Touch
Teach
Tools
Pressure and Vacuum Gauges
Tachometer
Vibration Meter
Amp/Voltage Meter
Infrared Thermometer
Common causes of pumping issues
The pump
Hydraulic issues
Controls
Lowest life cycle cost PD sludge pump
Primary, scum, WAS transfer, digester recirculation, thickening/dewatering feed, industrial
100% manufactured in U.S. for over 35 years
Self-priming, Self-valving (No ball check valves)
Pumps run dry indefinitely without damage
No packing/mechanical seals (No seal water!!)
Minimal routine maintenance required (no oil/grease, no traditional seals)
.
Thank You. Questions?
Steve Truitt, PE