V-Cell Filter Protective Grid Structure for Lower Pressure Loss
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Solution Overview
Problem
Existing V-cell filters in gas turbines and other systems face challenges in maintaining the stability and integrity of protective grids, which are crucial for preventing filter medium detachment and downstream damage, while also requiring efficient gas flow and minimal pressure loss.
Innovation Solution
The design of protective grids with centrically aligned bar structures, featuring closed curves and radial connectors, distributes forces uniformly and reduces material usage, allowing for a more stable and efficient filter construction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If protective grids are used to hold filter medium in position and prevent detachment, then reliability is improved, but device complexity increases
Solution Approach 1:
The protective grid is divided into multiple functional elements: radial spines extending from the center, circumferential ribs connecting the spines, and closing elements forming circular patterns. This segmentation allows each element to perform specific structural functions while collectively providing comprehensive protection against filter medium detachment.
Solution Approach 2:
The protective grid employs curved circular patterns formed by radial spines and circumferential ribs that create closed circular shapes. These curved geometric forms provide structural efficiency and aesthetic uniformity while maintaining the protective function against filter medium detachment.
2Weight of stationary object
If bar structures are made narrower to reduce material usage, then weight and material cost are reduced, but strength and stability deteriorate
Solution Approach 1:
The protective grid structure segments the load-bearing function across multiple radial spines and circumferential ribs rather than relying on a single continuous bar. This distributed structural approach allows narrower individual elements while maintaining overall structural strength through the collective action of multiple segments.
Solution Approach 2:
The protective grid combines different geometric forms (radial spines, circumferential ribs, circular closing elements) to create a composite structural system. This composite geometry distributes mechanical stresses more effectively than a simple bar structure, enabling narrower elements while maintaining stability.
3Reliability
If protective grids are made more stable to prevent filter medium detachment, then reliability is improved, but pressure loss increases
Solution Approach 1:
The protective grid applies different structural characteristics to different regions: radial spines provide outward radial support, circumferential ribs provide tangential reinforcement, and closing elements provide circular pattern completion. This localized structural optimization ensures adequate protection where needed while minimizing obstruction to gas flow paths.
Data Source
AI summary
A cassette filter including a plurality of filter media packs, a frame for receiving the filter media packs, and protective grids. Two filter media packs in each case are arranged in a v-shape, and a gas flows through the filter media packs from a dirty gas side of the filter to a clean gas side of the filter in order to clean the gas. A respective protective grid of the protective grids is arranged on each filter media pack on the clean gas side. The protective grids have a grid structure with substantially closed curves of different sizes arranged centrically around at least one centre of the protective grid and with a plurality of connectors, which are oriented radially with respect to the centre of the protective grid and connect the closed curves to one another.