Piston Baffle Plate Segmentation for Pressure Stability
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Solution Overview
Problem
In pressure regulators, the existing design with a perforated baffle plate leads to unstable fluid flow and unbalanced stresses due to differing flow speeds across the plate, affecting the stability of medium supply downstream.
Innovation Solution
A piston device with a baffle plate that divides the piston body into upper and lower areas, with a specific distance between the baffle plate and the upper end part to buffer fluid medium flow, combined with a closing element and positioning sleeve for enhanced sealing and stability, and threadingly coupled components for improved performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stress or pressure
If a perforated baffle plate is arranged at the top of the piston device to equalize pressure, then pressure balance is achieved under static conditions, but fluid flow stability deteriorates due to unstable flow forces on the baffle plate
Solution Approach 1:
The baffle plate is segmented with multiple perforations that divide the fluid flow into multiple smaller streams. This segmentation reduces the instability of the flow force acting on the baffle plate by distributing the flow across multiple openings rather than a single large opening, thereby maintaining pressure balance while improving flow stability.
Solution Approach 2:
The baffle plate is designed with non-uniform perforation distribution, where the size, shape, and arrangement of perforations vary across different regions of the plate. This local quality variation optimizes the flow characteristics in different areas, reducing flow instability while maintaining overall pressure balance across the piston device.
2Stress or pressure
If the lower cavity of the baffle plate is closed to create pressure differential, then pressure control is achieved, but stress balance on the piston device deteriorates
Solution Approach 1:
The piston device incorporates counterbalancing elements that compensate for the unbalanced stresses created by the closed lower cavity of the baffle plate. These counterbalancing structures distribute the stress more evenly across the piston device, maintaining stress balance while preserving the pressure control function of the closed cavity.
3Device complexity
If the distance between the baffle plate and upper end part is reduced to compact the device, then device compactness is improved, but system stability deteriorates
Solution Approach 1:
The invention optimizes the distance parameter between the baffle plate and the upper end part of the piston device to a specific range that simultaneously achieves device compactness and system stability. By carefully selecting this geometric parameter, the design balances the competing requirements of compact size and stable operation.
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 stabilizes the pressure conditions within the piston device, ensuring consistent input and output pressures and enhancing the overall system stability, with optimal performance achieved when the distance between the baffle plate and the upper end part is between 4 to 35 mm.
Implementation Method 1
the fluid medium flowing via the piston device can enter the first area of the piston and enter the second area via the perforated baffle plate, and the fluid medium is buffered in the first area
Data Source
AI summary
A piston device and a pressure regulator including the piston device. The piston device includes a piston body and a baffle plate having a surface provided with openings. The baffle plate is arranged in the piston body and divides the piston body into an upper first area and a lower second area. The piston device beneficially improves the stress balance of the first area and the second area, thereby improving the stability of the overall system.