Venturi Vacuum Inlet Stabilizer for Pump Pressure Pulsation
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Solution Overview
Problem
Fluid pumping systems with positive displacement pumps experience pressure fluctuations and acceleration head losses due to the alternately opening and closing inlet valve, leading to inefficient operation and reduced service life.
Innovation Solution
The implementation of automated inlet stabilizer dampeners, which include a deformable diaphragm separating a gas and liquid chamber, and a valve assembly with a venturi vacuum generator, allowing for automatic switching between pressure and suction modes to maintain consistent fluid flow and stabilize pressure fluctuations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a positive displacement pump uses an inlet valve that alternately opens and closes, then the pump can transport fluid under pressure, but pressure fluctuations and acceleration head losses occur leading to reduced service life
Solution Approach 1:
The patent applies beforehand cushioning by introducing a dampener chamber that absorbs pressure fluctuations before they reach the pump inlet. The dampener includes a cushioning chamber with compressible material positioned to intercept pressure waves generated by the inlet valve operations, thereby protecting the pump from harmful pressure variations and extending service life
2Productivity
If the pump operates in suction mode when the liquid supply tank level gets lower, then the pump can continue to operate, but pressure stability deteriorates and efficiency reduces
Solution Approach 1:
The patent uses an intermediary approach by introducing a stabilizer chamber that acts as a buffer between the variable liquid supply and the pump inlet. This stabilizer chamber maintains relatively constant pressure conditions for the pump regardless of fluctuations in the liquid supply tank level, enabling stable operation in both pressure and suction modes
3Power
If the inlet valve opens and closes alternately to pump fluid, then fluid transport is achieved, but acceleration head losses increase reducing efficiency
Solution Approach 1:
The dampener chamber with compressible material provides beforehand cushioning by absorbing the kinetic energy and pressure fluctuations generated during inlet valve opening and closing cycles. This reduces acceleration head losses by smoothing out the fluid flow before it enters the pump, thereby improving energy efficiency
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 enhances pump efficiency, extends pump life, and maintains consistent fluid flow by automatically adjusting to changing pressure conditions, thereby reducing vibrations and pulsations.
Implementation Method 1
a valve comprising a venturi vacuum generator
Data Source
AI summary
An automatic venturi vacuum regulator includes a housing having a pressure inlet port and a vacuum outlet port; a venturi vacuum pump within the housing, the venturi vacuum pump configured to receive compressed air from the pressure inlet port in order to generate suction at the vacuum outlet port; a movable piston configured to seal the pressure inlet port from the venturi vacuum pump responsive to a sufficient pressure differential between the vacuum outlet port and the pressure inlet port; and a check valve configured to seal the vacuum outlet port from the venturi vacuum pump to resist loss of vacuum at the vacuum outlet port.