Mecan-Hydro - Crest Gate (Bottom Hinged Flap Gate)
From Gates & Operating Systems - Gates
It consists of a straight or curved retaining surface, pivoted on a fixed axis at the sill.. Flap gates are also used on top of segment gates and fixed-wheel gates.
Applications
- Spillway gate Used to regulate flood releases from reservoirs
- Sluice gate Used to regulate and modulate flow on power plants
- Trash sluice gate Used to flush debris and ice
Pro s
- Great operational flexibility (passage of ice and other floating materials)
- Discharge of large water volume.
- Fail safe design for opening (Gravity opening)
- Compact design
- Less hoisting capacity required
- No possibility of trash accumulation in slots
- Smaller overhead structure
- Operating mechanism provides effort only when raised (single action)
- Operating mechanism provides effort only when raised (single action)
Con s
- Permanent immersion of the hinge bearings and inability to inspect said bearings
- Maintenance of gate seals
- Complex operation in ice condition
- Possibility of accumulating debris and ice on downstream side
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