Laminated Plate Nozzle Structure for High-Pressure Seal Integrity
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Solution Overview
Problem
Laminated plate nozzles face issues with deflection and seal integrity under high fluid pressures due to varying cross-sectional areas in flow paths, leading to uneven fluid distribution and potential leakage, which complicates accurate fluid discharge.
Innovation Solution
The nozzle design incorporates plenum projections with increased width sections to enhance stiffness and rigidity, maintaining a continuous line of contact between plates, thereby reducing deflection and ensuring uniform fluid distribution across the nozzle width.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the cross-sectional area of the flow path in an intermediate plate is increased to improve fluid distribution, then fluid flow capacity is improved, but the intermediate plate stiffness decreases causing deflection under pressure
Solution Approach 1:
The flow path is divided into multiple segments with varying cross-sectional areas. The flow path includes a first portion with a smaller cross-sectional area and a second portion with a larger cross-sectional area, allowing the system to achieve both adequate fluid flow capacity and maintained plate stiffness through strategic segmentation of the flow path geometry
Solution Approach 2:
Different portions of the flow path are assigned different cross-sectional areas based on local requirements. The first portion has a smaller cross-sectional area where plate stiffness is critical, while the second portion has a larger cross-sectional area where fluid flow capacity is prioritized, optimizing both properties locally throughout the flow path
2Area of stationary object
If the cross-sectional area of the flow path is increased to distribute fluid across the width of the nozzle, then fluid distribution coverage is improved, but fluid pressure decreases due to the larger cross-sectional area
Solution Approach 1:
The flow path is segmented into a first portion with smaller cross-sectional area that maintains higher fluid pressure, and a second portion with larger cross-sectional area that distributes fluid across the width of the intermediate plates, achieving both pressure maintenance and wide distribution coverage through segmentation
Solution Approach 2:
The flow path transitions from a narrower first portion to a wider second portion, utilizing dimensional expansion in the width direction to distribute fluid across multiple orifices while the smaller first portion ensures sufficient pressure is maintained before distribution
3Quantity of substance
If the cross-sectional area of the flow path is increased, then fluid flow capacity is improved, but deflection of adjacent intermediate plates occurs causing seal failure and leakage
Solution Approach 1:
The flow path is divided into a first portion with smaller cross-sectional area that maintains plate stiffness and seal integrity, and a second portion with larger cross-sectional area that provides adequate fluid flow capacity, preventing deflection-induced seal failure while ensuring sufficient fluid discharge
Solution Approach 2:
The flow path geometry is optimized locally, with the first portion having smaller cross-sectional area to maintain plate rigidity and seal integrity, while the second portion has larger cross-sectional area to provide adequate fluid flow capacity, achieving both reliability and flow capacity through local geometric differentiation
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A nozzle includes a back plate having a first inlet passage and a first discharge opening at one end of the first inlet passage, a front plate and a plurality of nozzle plates secured between the back plate and the front plate. The plurality of nozzle plates includes a first plenum plate, a second plenum plate and a discharge plate. The first plenum plate has a first plenum, the second plenum plate has a second plenum and a second plenum projection extending into the second plenum, and the discharge plate is disposed between the first plenum plate and the second plenum plate and has one or more orifices. The first plenum is disposed in fluid communication with the first inlet passage and is configured to receive a first fluid from the first inlet passage via the first discharge opening. The one or more orifices are disposed in fluid communication with the first plenum and are configured to receive the first fluid from the first plenum. The one or more orifices each include an orifice opening at an edge of the discharge plate configured to discharge the first fluid.