Chevron vane and moisture separator including same
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Solution Overview
Problem
Existing moisture separators in nuclear power plants have a fixed chevron vane shape, limiting the adaptive control of droplet trapping and steam pressure loss according to operating conditions, which affects the quality of steam and power generation efficiency.
Innovation Solution
A chevron vane with a main frame group pivotably connected by hinge members and an auxiliary vane group, allowing adjustable overall length, cross-sectional area, and angle to adaptively control pressure loss and droplet collection efficiency based on operating conditions and external parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed chevron vane shape is used, then the structure is simple and easy to manufacture, but the droplet collection efficiency and pressure loss cannot be adaptively controlled according to operating conditions
Solution Approach 1:
The chevron vane structure is transformed from a fixed configuration to a dynamically adjustable one by introducing hinge members that connect main frames. These hinges enable the main frames to rotate relative to each other, allowing the chevron angle and overall geometry to be changed based on operating conditions such as steam flow rate and droplet concentration, thereby achieving adaptive control of both droplet collection efficiency and pressure loss characteristics
Solution Approach 2:
The chevron vane is divided into multiple discrete main frames that are connected through hinge members rather than being a single rigid structure. This segmentation allows independent adjustment of each main frame's orientation, enabling flexible modification of the chevron geometry to optimize performance under varying operating conditions while maintaining structural integrity
2Productivity
If the chevron vane structure is made adjustable with hinge members and multiple main frames, then droplet collection efficiency and pressure loss can be controlled according to operating conditions, but the device complexity increases
Solution Approach 1:
The adjustable main frames and auxiliary vanes serve multiple functions simultaneously: they act as structural support elements, droplet collection surfaces, and flow control components. By integrating these functions into a single adjustable structure, the system achieves optimized steam quality and power generation efficiency without requiring separate control mechanisms, thereby limiting the increase in overall device complexity
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
Enables dynamic adjustment of steam pressure loss and droplet collection efficiency, improving steam quality and power generation efficiency by optimizing the chevron vane's structure in response to varying operating conditions.
Implementation Method 1
a collection vane group mounted on the main frame group and including multiple collection vanes for trapping droplets contained in the steam
Implementation Method 2
collection vanes for trapping droplets contained in steam
Implementation Method 3
multiple main frames arranged in a flow direction of steam and pivotably connected to each other
Implementation Method 4
a reheater installed behind the chevron vane and configured to heat the steam passing through the chevron vane
Data Source
AI summary
Provided are a chevron vane that traps and removes droplets contained in steam and a moisture separator including the same. The chevron vane for trapping and removing droplets contained in steam includes a main frame group including multiple main frames arranged in a flow direction of steam and pivotably connected to each other, and a collection vane group mounted on the main frame group and including multiple collection vanes for trapping droplets contained in the steam.