External Fan Stack Bracing for Cooling Tower Wind Load Resistance
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Solution Overview
Problem
Current reinforcement or bracing systems for cooling tower fan stacks are prone to rupture during high wind conditions, causing damage to the tower structure, and fail to effectively distribute loads to prevent deformation and damage during extreme environmental events.
Innovation Solution
An external fan stack bracing system comprising a first ring and a second ring of different diameters, connected by braces, which transfers loads from the fan cylinder to the fan deck, distributing the load and preventing deformation and damage by maintaining the geometry of the fan stacks under high wind loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If current reinforcement or bracing systems are used to support fan stacks during high wind conditions, then structural support is provided, but the systems are prone to rupture and cause damage to the tower structure
Solution Approach 1:
The bracing system is divided into multiple independent components: rings positioned at different heights around the fan stack, and diagonal braces connecting these rings. This segmentation allows each component to independently bear and distribute wind loads, preventing single-point failure and rupture during extreme weather conditions
Solution Approach 2:
The bracing system is pre-installed on the fan stack before extreme weather events occur. The rings and braces are positioned and secured in advance to provide immediate structural support when high winds occur, eliminating the need for reactive reinforcement during critical moments
2Stability of the object's composition
If rigid bracing systems are used to prevent deformation, then structural stability is improved, but the systems fail to effectively distribute loads and can cause damage to the fan deck and internal components
Solution Approach 1:
The bracing system applies different structural characteristics at different locations: rings at specific heights provide circumferential stability, while diagonal braces provide axial support. This localized quality distribution ensures that each part of the fan stack receives appropriate support tailored to its specific structural needs, maintaining stability without creating harmful load concentrations
Solution Approach 2:
The bracing system transitions from two-dimensional ring structures to three-dimensional spatial bracing by adding diagonal braces that connect rings at different heights. This dimensional transition creates a robust space frame structure that effectively distributes wind loads throughout the entire bracing system, preventing load concentration and potential damage to the fan deck and internal components
Data Source
AI summary
The present invention relates to a fan cylinder bracing system for a cooling tower having a fan deck that extends along a longitudinal axis. The bracing system has a first ring having a first diameter wherein the first ring is located at a first position along the longitudinal axis. It also has a second ring having a second diameter wherein the second ring is located at a second position along the longitudinal axis. Finally, the cylinder bracing system has a first brace connected to the first ring and said second ring, wherein said first brace transfers loads from the first ring to the second ring.