Segmented cavitation boiler
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Solution Overview
Problem
Conventional fluid devices, such as pumps and cavitation boilers, face challenges in maintenance complexity and tolerance issues due to their design, which affects efficiency and reliability, especially in multi-stage systems where precise assembly and minimal fluid movement are crucial.
Innovation Solution
The design incorporates a segmented reaction chamber housing with removable rotor and stator segments, allowing for a cavitation boiler conversion from a typical multi-stage pump by replacing pumping segments with individual rotor and stator assemblies that spin within corresponding segments, maintaining precise tolerances and minimizing unwanted fluid movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional one-piece or two-piece reaction chamber housing is used, then the device can be constructed and serviced by removing an end of the housing, but the maintenance complexity increases and tolerance precision deteriorates in multi-stage systems
Solution Approach 1:
The reaction chamber housing is divided into multiple segmented sections that can be independently removed along the axis of rotation. Each segment contains its own rotor-stator assembly, allowing maintenance personnel to access and service individual stages without disassembling the entire housing. This segmentation reduces maintenance complexity while maintaining manufacturing simplicity.
Solution Approach 2:
The housing segments are designed to be removable along the axial dimension rather than requiring lateral separation or end-cap removal. This axial segmentation provides a new dimension for access and maintenance, simplifying the servicing process while maintaining structural integrity during operation.
2Productivity
If conventional multi-stage pump design is used, then the device can handle fluid flow, but tolerance precision deteriorates due to accumulation of errors across multiple stages
Solution Approach 1:
Each stage is designed as an independent modular unit with standardized interfaces. The segmentation allows each stage to be manufactured and tested separately to tight tolerances, then assembled as a complete assembly. This prevents tolerance accumulation across multiple stages while maintaining high fluid flow handling capability.
Solution Approach 2:
Each rotor-stator stage assembly is pre-assembled and pre-adjusted to precise tolerances as a complete unit before installation into the housing. This preliminary assembly ensures that critical tolerances are established under controlled conditions, preventing error accumulation when multiple stages are combined.
3Productivity
If conventional pumping segments are used, then the device can move fluid axially, but cavitation efficiency decreases due to unwanted fluid movement and dispersed energy
Solution Approach 1:
The conventional pumping function is extracted and replaced with dedicated cavitation-generating rotor-stator elements. These elements create controlled cavitation zones that focus energy on specific areas rather than dispersing it through general fluid movement. The fluid transport function is maintained through the cavitation process itself, achieving both goals simultaneously.
Solution Approach 2:
The rotor-stator assemblies create localized cavitation regions with specific geometric configurations optimized for energy concentration. Instead of uniform fluid movement throughout the housing, the cavitation effect is concentrated in specific zones between rotor and stator teeth, improving efficiency while maintaining overall fluid transport.
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 design simplifies maintenance, maintains precise tolerances, and increases cavitation efficiency by focusing work on specific areas, doubling cavitation capacity in a given axial distance while reducing the overall length of the fluid path, thus enhancing the efficiency of the cavitation process.
Implementation Method 1
the first cavitation region is configured to generate cavitation in a fluid flowing radially outward from to the first bank of apertures to the third bank of apertures
Implementation Method 2
when the rotor segment rotates with respect to the stator segment, the first cavitation region is configured to generate cavitation in a fluid
Data Source
AI summary
A cavitation boiler segment includes a rotor to be coupled with a rotating inner drum and a stator surrounding the rotor segment. The rotor and the stator each include drums with two banks of annular apertures, which overlap to define two cavitation regions. The rotor includes a web bifurcating the rotor between the apertures into an upstream side and a downstream side, each forming a separate fluid passage between a face of the rotor and a bank of apertures. The stator includes a casing enclosing the stator apertures in a fluid passageway. In operation, fluid flows into a first side of the rotor, across a first cavitation region and into the stator, then back across the second cavitation region and into the second side of the rotor where the fluid may flow into a first side of an adjacent segment.