Integral Flapper-Nozzle Structure for Low-Leakage Servo Valves
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Solution Overview
Problem
Conventional flapper-type servo valves are complex, bulky, and require precise manufacturing and calibration, with multiple potential failure points and leakage issues, making them difficult to manufacture and assemble efficiently while maintaining precision and reliability for high fluid flow and frequency operations.
Innovation Solution
An integral flapper and nozzle structure formed by sheets of metal, where the flapper, orifices, and nozzles are integrated into a single component, allowing for precise positioning and movement to regulate fluid flow, reducing the number of parts and assembly complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional flapper-type servo valve systems are used, then fluid flow control function is achieved, but device complexity increases due to multiple separate parts and assembly requirements
Solution Approach 1:
The patent combines the flapper and nozzle into a single integral component made from a single piece of material. This merging eliminates the need for separate flapper and nozzle parts, reducing assembly steps and potential failure points while maintaining the fluid flow control function. The integral structure ensures precise positioning and eliminates leakage issues between separate components.
2Manufacturing precision
If conventional flapper-type servo valve systems are used, then fluid flow control function is achieved, but manufacturing precision requirements increase due to multiple precise parts needing assembly
Solution Approach 1:
By integrating the flapper and nozzle into one component, the patent reduces the number of precision-critical interfaces. The single-piece construction eliminates the need for precise alignment and sealing between separate flapper and nozzle parts, significantly easing manufacturing while maintaining control precision.
3Reliability
If conventional flapper-type servo valve systems are used, then fluid flow control function is achieved, but weight increases due to multiple parts and assembly components
Solution Approach 1:
The integral flapper-nozzle structure eliminates the need for separate components, fasteners, seals, and assembly fixtures. This consolidation reduces the total material used and eliminates redundant structural elements, resulting in significant weight reduction while maintaining the reliability of fluid flow control.
4Manufacturing precision
If conventional flapper-type servo valve systems are used, then fluid flow control function is achieved, but assembly time increases due to multiple assembly steps and calibration requirements
Solution Approach 1:
The single-piece integral structure eliminates multiple assembly steps including alignment, fastening, and sealing operations. The precise positioning of the nozzle relative to the flapper is built into the monolithic structure during manufacturing, eliminating the need for time-consuming field calibration and assembly procedures.
5Reliability
If conventional flapper-type servo valve systems are used, then fluid flow control function is achieved, but leakage risk increases due to multiple sealing interfaces
Solution Approach 1:
By making the flapper and nozzle a single integral component, the patent eliminates all interfaces between separate parts where leakage could occur. The monolithic construction removes the need for seals, gaskets, and bonding joints, completely preventing leakage paths that would exist in assembled multi-part systems.
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 solution simplifies manufacturing and assembly, enhances precision, reduces weight, and improves operational pressures and frequencies, while eliminating the need for additional sealing and assembly steps, resulting in a more reliable and cost-effective servo valve design.
Implementation Method 1
the flapper, orifices and nozzles are formed by sheets of metal formed into a single component... movement of the flapper relative to the nozzles to regulate fluid flow
Data Source
AI summary
An integral flapper and nozzle structure for a servo valve assembly whereby the flapper, orifices and nozzles are formed by sheets of metal formed into a single component.