Pressure Exchanger Piston Braking System
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Pressure exchangers experience wear and energy inefficiency due to piston collisions with valve plates and abrupt stops, leading to maintenance issues and energy loss.
Innovation Solution
The pressure exchanger incorporates a piston braking system with a pressure relief arrangement, featuring thrust pads, conical parts, and fluidic connections to manage piston velocity and reduce pressure peaks, thereby minimizing wear and optimizing energy transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the piston velocity is not controlled, then the energy transfer efficiency is high, but the piston hits the valve plate causing wear and damage
Solution Approach 1:
The patent introduces a braking system with friction elements that act on the piston before it reaches the valve plate, gradually reducing its velocity to prevent impact. This cushioning mechanism is activated in advance during the piston's movement cycle, ensuring the piston slows down before potential collision, thereby protecting both the piston and valve plate from damage while maintaining continuous operation.
2Reliability
If a piston braking system is introduced to reduce velocity, then wear is reduced, but pressure peaks occur within the cylinder
Solution Approach 1:
The patent introduces a fluid cushion as an intermediary between the piston and the braking system. This fluid layer absorbs and distributes the pressure generated during braking, preventing direct transmission of pressure peaks to the cylinder walls. The fluid mediator allows gradual deceleration while maintaining pressure distribution that protects the cylinder structure from damage.
3Productivity
If the piston moves abruptly, then the fluid displacement is efficient, but energy is lost due to kinetic energy dissipation
Solution Approach 1:
The patent implements a dynamic braking system where the braking force is continuously adjusted based on the piston's position and velocity. The friction elements engage progressively rather than abruptly, creating a controlled deceleration profile that maintains fluid displacement efficiency while minimizing kinetic energy loss. This dynamic control allows the system to adapt braking intensity to operational conditions.
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
This solution reduces wear and maintenance needs while enhancing energy efficiency by controlling piston movement and pressure distribution within the pressure exchanger.
Implementation Method 1
The piston braking system comprises at least one thrust pad forming a chamber between the cylinder barrel and the valve plate
Implementation Method 2
a hydraulic, flexible seal is provided to seal the thrust pad and the cylinder in the cylinder barrel with a flexible seal
Data Source
AI summary
A pressure exchanger with a valve system includes a cylinder barrel (1), two valve plates (2) and two port plates (3, 4), wherein the cylinder barrel (1) has at least one cylinder (7) which accommodates a piston (8). The objective is to provide a pressure exchanger with low wear and a low maintenance effort. This objective is solved by a pressure exchanger including a piston (8) braking system and that the piston (8) includes a pressure relief arrangement.