Water Filtration Tube Sheet Assembly Design
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Solution Overview
Problem
Conventional regenerative media filters for water filtration are expensive to manufacture and require significant space due to their design, which includes a removable lid and thick tube sheets, making them difficult to modify and service, and result in different sizes for various applications.
Innovation Solution
A filtration apparatus with a unitary casing and a tube sheet assembly composed of thinner, punched segments and retaining plates, allowing for adjustable filtration surface area through restrictor plates and a rotatable, pneumatically supported tube sheet assembly for easy maintenance and modification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If a removable lid is used to permit access to tube sheets and internal components, then ease of repair is improved, but device complexity and space requirements increase
Solution Approach 1:
The tube sheet is divided into multiple removable segments that can be individually accessed through the fixed lid via access ports. This segmentation allows maintenance personnel to service specific tube sheet portions without removing the entire lid, reducing structural complexity while maintaining repairability.
2Strength
If thick gauge material is used for tube sheets to provide necessary strength, then strength is improved, but manufacturing cost and manufacturing time increase
Solution Approach 1:
The tube sheet is constructed from multiple thinner plates stacked and bolted together rather than a single thick plate. This segmentation maintains the required structural strength through distributed load bearing while enabling cost-effective manufacturing via punching operations on thinner materials and eliminating time-consuming drilling processes.
Solution Approach 2:
Multiple functional plates (tube sheet plate, retain plates, restrictor plates) are combined into a single stacked assembly that performs both structural support and filtration functions. This merging eliminates the need for separate thick structural components while achieving the required strength through the composite structure.
3Adaptability or versatility
If discrete sizes of regenerative media filters are manufactured for different applications, then adaptability is improved, but device complexity and inventory requirements increase
Solution Approach 1:
The tube sheet assembly is designed as a dynamic, reconfigurable structure where segments, plates, and tubes can be added or removed to adjust filtration surface area. This dynamic design allows a single base unit to adapt to different filtration requirements, eliminating the need for multiple discrete filter sizes.
Solution Approach 2:
The fixed lid design with standardized access ports and the modular tube sheet assembly create a universal platform that can accommodate various configurations of filtration tubes and segments. This universal design allows one filter housing to serve multiple application requirements through internal reconfiguration rather than requiring multiple specialized filter models.
4Manufacturing precision
If drilling operations are used to form holes in tube sheets, then manufacturing precision is improved, but manufacturing time and manufacturing cost increase
Solution Approach 1:
Traditional drilling operations are replaced with punching operations to create holes in the tube sheet plates. This substitution maintains the required hole positioning precision while dramatically reducing manufacturing time and tooling costs, as punching is a faster, more economical process for creating holes in metal plates.
Data Source
AI summary
Aspects of the present disclosure relate to an apparatus for filtering a fluid. One exemplary aspect including a casing having an interior cavity and extending between a fluid inlet and a fluid outlet at opposed ends thereof, a tube sheet assembly spanning the interior cavity the tube sheet assembly having a plurality bores therethrough and a plurality of filter media tubes each extending from one of the plurality of bores in the tube sheet assembly. In some exemplary aspects, the tube sheet assembly may comprise a plurality of retaining plates sandwiched together with a tube sheet plate. In some exemplary aspects, the apparatus may further comprise at least one restrictor plate adapted to obstruct at least one of the plurality of bores of the tube sheet.