Inlet Air Filter Bypass Mechanism for Power Plant
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Solution Overview
Problem
Existing inlet air filtering systems for power plants face inefficiencies and safety issues due to manual operation, clogging, icing, and pressure drops, particularly in varying weather conditions, leading to unnecessary shutdowns and potential damage from impurities.
Innovation Solution
An inlet air filter device with a movable bypass element and shutter element that isolates the water separator from the air flow, allowing for automatic operation and isolation when not needed, and using flow means to maintain pressure and prevent impurity deposition, with optional de-frosting and drying capabilities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the upstream water separation device is kept in place during dry weather conditions, then water separation is continuously provided, but unnecessary pressure drops occur and the device causes harmful effects
Solution Approach 1:
The bypass element is made movable between different positions (bypass and filtration) allowing the system to dynamically adapt its configuration based on weather conditions. The element can be actuated to switch between blocking the bypass passage (forcing air through the water separator) or opening it (allowing air to bypass the separator), thereby resolving the contradiction between continuous water separation and avoiding unnecessary pressure drops during dry conditions
2Object-generated harmful factors
If the bypass assembly is opened to let air flow without crossing the water separator, then pressure drop is reduced, but impurities deposit on the water separator causing damage
Solution Approach 1:
A shutter element is introduced as an intermediary component that can close off the bypass passage when the bypass element is in the bypass position. This shutter acts as a mediator to prevent impurities from reaching and damaging the water separator while still allowing the bypass configuration to reduce pressure drop during appropriate conditions
3Object-affected harmful factors
If the bypass assembly is used to avoid ice formation on the water separator, then the separator is protected from icing, but the assembly requires complex cinematic elements and actuators increasing device complexity
Solution Approach 1:
The protection function is segmented into two independent components: a bypass element that can open/close the bypass passage and a shutter element that can close the bypass passage from the other side. This segmentation allows each component to be simpler in design while collectively providing the ice protection function, reducing the complexity of individual cinematic elements and actuators required
4Object-generated harmful factors
If manual removal of the upstream air filter device is performed when water separation is not needed, then the device is removed to avoid pressure drops, but shutdown of the thermal machine is required causing time loss
Solution Approach 1:
The system performs self-service by automatically adjusting its configuration based on weather conditions. The bypass element can be actuated (manually or automatically) to switch between filtration and bypass modes without requiring shutdown of the thermal machine, allowing operators to respond quickly to changing conditions while maintaining continuous 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 enables efficient operation of downstream filtration modules and thermal machines across various weather conditions, reducing shutdowns and maintaining filter integrity by automatically managing water separation and preventing impurity damage, while minimizing energy consumption and mass of the bypass mechanism.
Implementation Method 1
a water separator in the passage for separating moisture in the air mass
Implementation Method 2
separating water from the inlet air
Data Source
AI summary
An inlet air filter device including: at least one passage for delivering an air mass from an inlet section to an outlet section of the inlet air filter device, a water separator in the at least one passage for separating water in the air mass, the water separator positioned between the inlet section and the outlet section, a bypass element movable between a first open position in which the air mass is forced to cross the water separator and a second closed position in which the air mass flows from the inlet to the outlet section without crossing the water separator; a shutter element which is actuatable to co-operate with the bypass element for isolating the water separator from the air mass when the bypass element is in the second closed position.