Single-Mass Flywheel Assembly for Reciprocating Pump Torsional Damping
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Solution Overview
Problem
Reciprocating pumps generate high and low frequency torsional vibrations that cause shock loading and torsional resonance in driving equipment, leading to premature wear and failure of components.
Innovation Solution
Implementing a single mass flywheel and torsional vibration dampener in the drive-train system to absorb torque shocks and dampen harmonic effects, reducing torsional vibrations without the need for electrical control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a reciprocating pump operates to pump fluid slugs, then fluid pumping function is achieved, but torsional vibrations and shock loading are generated in the driveline
Solution Approach 1:
A single mass flywheel is introduced as an intermediary component between the reciprocating pump and the driveline. The flywheel absorbs torque shocks and dampens harmonic effects, acting as a mediator that reduces torsional vibrations transmitted to the driveline while allowing the pump to continue its reciprocating operation.
Solution Approach 2:
The flywheel provides beforehand cushioning by absorbing torque variations and shock loads before they propagate through the driveline. This prior cushioning effect protects the driveline components from premature wear and failure caused by high and low frequency torsional vibrations.
2Ease of operation
If driving equipment is used to drive the reciprocating pump, then pump operation is enabled, but shock loading shortens the life of driving equipment
Solution Approach 1:
The single mass flywheel serves as a protective intermediary between the driving equipment and the reciprocating pump. It absorbs shock loading and torque spikes, reducing the harmful effects transmitted to the driving equipment and thereby extending its operational life while maintaining full drive capability.
3Productivity
If multiple reciprocating pumps are connected to a common discharge line, then fluid pumping capacity is increased, but pressure spikes and torsional distortion amplitude increase
Solution Approach 1:
The flywheel converts the harmful effect of synchronized pump operations into a beneficial outcome. By absorbing the combined torsional vibrations and pressure spikes from multiple synchronized pumps, the flywheel prevents excessive distortion amplitude while allowing the system to operate at increased total pumping capacity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces upstream shock loading and torsional resonance, prolonging the life of driving equipment by minimizing torque fluctuations and resonance-induced damage.
Implementation Method 1
a single mass flywheel and torsional vibration dampener in the drive-train system to absorb torque shocks and dampen harmonic effects
Implementation Method 2
dampen harmonic effects, reducing torsional vibrations
Data Source
AI summary
A pump system may include a pump, a driveshaft, driving equipment, and a vibration dampening assembly configured to reduce pump-imposed high frequency/low amplitude and low frequency/high amplitude torsional vibrations. The pump may have an input shaft connected to the driveshaft. The driving equipment may include an output shaft having an output flange connected to the driveshaft. The driving equipment may be configured to rotate the driveshaft to rotate the input shaft of the pump therewith. The vibration dampening assembly may include one or more flywheels operably connected to the input shaft and configured to rotate therewith.