Pressure-Controlled Bleed Valve With Deflectable Sealing Panel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bleed valves in turbine engines have moving parts that require lubrication and maintenance due to friction, leading to potential leaks and integrity issues over time.
Innovation Solution
A bleed valve design featuring a valve body with a deflectable metallic panel and a pressure control device to vary fluid pressure differentials, allowing for seamless operation without moving parts, ensuring reliable sealing and fluid flow control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If moving parts are used in bleed valves for opening and closing, then the valve can be opened and closed to control flow, but the moving parts require lubrication and maintenance due to friction
Solution Approach 1:
The patent removes all moving parts from the valve structure. Instead of using traditional sliding or hinged components, the invention employs a flexible panel that deflects under pressure differential to open or close the valve. This extraction of moving parts eliminates friction, wear, and the associated maintenance requirements while preserving the valve's opening and closing functionality.
Solution Approach 2:
The patent replaces the mechanical moving part system with a pressure-controlled flexible panel system. The valve operation is achieved through pressure differential acting on the flexible panel rather than through mechanical actuators, motors, or linkages. This substitution eliminates the need for lubrication and reduces maintenance while maintaining operational capability.
2Productivity
If moving parts are used in bleed valves, then the valve can regulate flow, but wear occurs over time leading to potential leaks and integrity issues
Solution Approach 1:
The patent eliminates moving parts that are susceptible to wear. The flexible panel has no contact points with seals or gaskets that would degrade over time, removing the source of wear-related failures and leaks while maintaining flow regulation capability through pressure-controlled deflection.
Solution Approach 2:
The patent employs a flexible panel made of elastomeric or flexible polymer material that deflects under pressure differential to control valve opening. This flexible membrane structure eliminates wear associated with rigid moving parts and mechanical contacts, preventing leaks and integrity issues while enabling flow regulation.
3Productivity
If traditional valve designs with moving parts are used, then flow control is achieved, but regular maintenance is required to ensure adequate function
Solution Approach 1:
The patent removes moving parts that require maintenance. The flexible panel design has no components that need lubrication, adjustment, or replacement, eliminating maintenance time while preserving flow control functionality through pressure differential actuation.
Solution Approach 2:
The valve operates autonomously based on pressure differential across the flexible panel without requiring external actuators, motors, or mechanical linkages. The system self-regulates flow based on pressure conditions without needing maintenance interventions, achieving self-service operation.
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
The solution eliminates the need for regular maintenance, reduces wear, and enhances the reliability of bleed valves by using a deflectable metallic panel and pressure control device, effectively managing fluid flow and preventing leaks in turbine engines.
Implementation Method 1
a sheet of metallic material extending across the valve chamber, the sheet of metallic material deflectable under fluid pressure between a sealing position blocking the passageway
Implementation Method 2
a pressure control device controllable to vary a pressure differential between opposite sides of the sheet of metallic material within the valve chamber
Data Source
AI summary
A bleed valve has a valve body enclosing a valve chamber defining a passageway between an inlet port and an outlet port. A panel is mounted into the valve body. The panel is deflectable under fluid pressure between a sealing position blocking the passageway when the bleed valve is in a close state, and a bleeding position allowing fluid flow communication between the inlet port and the outlet port when the bleed valve is an open state. A pressure control device is provided to vary a fluid pressure differential between opposite sides of the panel within the valve chamber and selectively open or close the bleed valve.