Double Block and Bleed Transflow Valve with Single Spindle Gear Train
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Solution Overview
Problem
Conventional transflow valves in turbomachinery support systems require operator skill and understanding to operate correctly, leading to potential fluid supply disruptions or incorrect flow direction during maintenance, making them not foolproof.
Innovation Solution
A double block and bleed transflow valve design using a single spindle interconnected with a gear train mechanism to simultaneously operate all six valve stems, ensuring uninterrupted fluid flow between operational and standby devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional transflow valves are used with multiple spindles and valve stems, then the valve can control multiple flow paths, but the operation becomes complex and operator skill-dependent
Solution Approach 1:
The patent combines multiple valve stems and spindles into a single integrated valve body with one spindle. The flow path control is achieved through internal gear mechanisms and cam surfaces that convert the single spindle's rotation into coordinated movement of multiple valve elements, eliminating the need for multiple independent spindles and reducing operational complexity
Solution Approach 2:
The patent introduces intermediate mechanical elements such as gears, cam surfaces, and linkages that mediate between the single spindle and the multiple valve stems. These intermediaries automatically coordinate the opening and closing of different valve paths, replacing manual coordination and reducing dependence on operator skill
2Reliability
If multiple independent valves are used for double block and bleed arrangement, then flow isolation is achieved, but the switching process may cause fluid supply disruptions
Solution Approach 1:
The patent designs the valve mechanism so that the bleed path is opened in advance before the block paths are switched. The cam surfaces and gear mechanisms are configured to sequentially activate different flow paths, ensuring that the standby path is already prepared and the active path is gradually transferred, preventing any interruption in fluid supply
Solution Approach 2:
The patent ensures continuous fluid flow by overlapping the operation of different valve paths during switching. The mechanical linkage maintains pressure balance and allows gradual transition between block paths while the bleed path remains active, ensuring that the useful action of fluid supply continues without interruption throughout the switching process
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 design ensures seamless and uninterrupted fluid transfer between devices, reducing the risk of operational issues during maintenance by automating the switching process, eliminating the need for operator-dependent valve operation.
Implementation Method 1
A double block and bleed transflow valve design using a single spindle interconnected with a gear train mechanism to simultaneously operate all six valve stems
Data Source
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AI summary
A transfer valve system includes an improved double block and bleed transflow valve system which uses six valves and uses one single spindle interconnecting the inlet and outlet transflow valves, which valves also drive a gear train mechanism connecting all six valve stems. As such, by operating one main spindle connected to the two inlet and outlet transflow valves, all six valves of this double block and bleed configuration operate simultaneously and assure an uninterrupted flow of fluid from one device to another standby device. The transflow valve system also is formed of separable components to form both single and double block and bleed configurations.