Pulsation Damping System for Piston Pumps
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Solution Overview
Problem
Existing pulsation damping systems for piston pumps are ineffective in reducing pressure oscillations, especially when conveying fluids with solid contents, as they tend to clog and lose damping efficiency due to abrasive solids, leading to reduced functionality and potential damage.
Innovation Solution
A pulsation damping system that includes a damping device with a damping fluid connection and a volume change device, utilizing a throttle valve and a gas volume to intercept and convert pressure surges into heat, effectively reducing pressure oscillations through controlled fluid flow and volume changes, suitable for high-frequency and high-pressure applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pulsation damper with reservoir chamber is arranged in the inlet-side and/or outlet-side pipe to reduce pressure pulsations, then pressure oscillations are reduced, but the damper tends to clog and lose damping efficiency when conveying fluids with solid contents due to abrasive solids
Solution Approach 1:
The invention extracts the harmful interaction between solid contents and the damping mechanism by separating the pulsation damping function from the main fluid flow path. The damping device is fluidically connected to the pump chamber via a damping fluid connection, allowing it to damp pressure oscillations without the conveyance fluid with solid contents directly passing through the damping mechanism, thus preventing clogging and abrasion while maintaining damping efficiency
Solution Approach 2:
The invention introduces an intermediary damping fluid connection that mediates between the pump chamber and the damping device. This intermediary connection allows pressure oscillations to be transmitted to the damping device for reduction while preventing direct contact between the abrasive conveyance fluid with solid contents and the damping mechanism, thereby solving both the damping efficiency and clogging problems simultaneously
2Reliability
If known pulsation dampers are used in high-frequency and high-pressure applications, then pressure oscillations can be reduced, but the dampers suffer from reduced functionality and potential damage due to abrasive solids
Solution Approach 1:
The invention extracts the harmful abrasive solids from the damping mechanism's flow path while maintaining the damping function. The damping device is connected via a damping fluid connection that allows pressure oscillations to be dampened without the abrasive conveyance fluid with solid contents directly engaging the damping components, thus preventing damage while maintaining durability under high-frequency and high-pressure conditions
Solution Approach 2:
The damping fluid connection acts as an intermediary that protects the damping device from abrasive solids while still allowing it to function effectively under high-frequency and high-pressure conditions. This intermediary connection transmits pressure oscillations to the damping device for reduction while filtering out the harmful abrasive solids, thereby solving both the durability and damage prevention problems
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 system provides durable and effective damping of pressure oscillations in piston pumps, particularly for fluids with solid contents, by converting pulsation energy into heat, thereby reducing pressure surges and maintaining pump efficiency.
Implementation Method 1
a gas volume, in particular a compressible gas volume, is arranged in a second area, also called a pressure chamber
Implementation Method 2
Such dampers act in such a manner that a pressure increase is compensated by a compression of the gas volume located in the reservoir chamber
Implementation Method 3
a throttling device with a damping fluid connection to the pump chamber and to a pressure chamber of the volume change device is provided
Data Source
AI summary
A pulsation damping system for reducing pressure oscillations in an inlet line and/or in an outlet line of a piston pump. The piston pump includes a pump chamber which is connected to the inlet line of the piston pump via a first fluid connection and to the outlet line of the piston pump via a second fluid connection to convey a conveyance fluid. The pulsating damping system includes a damping device. The pump chamber includes a damping fluid connection via which the pump chamber is fluidically connected to the damping device to damp the pressure oscillations.