Introduction of Penstock/ Sluice gate
Penstocks or sluice gates are the equivalent of valves used to control the flow of running water. Penstock / Sluice gates mainly consists of a sort of a sturdy mobile vertical wall, of various material.
The amount of water that is allowed to flow through the penstock can be controlled with a sluice/ penstock, which is simply a gate that can be raised and lowered to increase or decrease the amount of water allowed to flow through it.
When the penstock is fully open, water flows freely down through the penstock. However, when it is closed slightly there is a limitation to how much water can flow, and thus less water enters or flow through the penstock.
Types of Penstock
There are few types of penstock:
Wall Mounted Penstock
Wall Mounted penstock also called as flange mounted penstock. Wall Mounted Penstock / Sluice gates is generally used for wall installation where it is necessary to intercept and control the flow of the fluid from inlet or outlet both at circular section and rectangular or square geometric section. Wall Mounted penstock also called as submerged sluice gates
Channel Mounted Penstock
Channel Mounted Penstock is generally used for installation in channels where it is necessary to intercept and control the flow of fluid or, for example on the outlet or the inlet of a channel. It has three-side sealing channel penstock or gate for open channels square or rectangular sliding channel gate, with fixed parts embedded in concrete and seals on 3 sides.
Weir gate also called as downward opening weir gate. The function of a down-opening weir gate is to control the upstream water level, and/or pace the amount of discharge from a water system. At times there will be a level control sensor in the system which is directly connected – controlling a modulating electric operator to automatically pace the amount of flow discharged and/or maintain a constant upstream water depth.
Type Materials of Penstock / Sluice Gate
When designing a penstock to carry water, engineers must choose from a multiplicity of materials and material strengths. The most suitable material is selected to form the penstock to meet the unique site characteristics. Thus, penstock material may be cast iron, stainless steel, mild steel, carbon steel and ductile iron.
Cast Iron Penstock / sluice gate generally used in various segments such as water treatment applications (wastewater and sewage). Cast iron sluice gates / penstock are known throughout the world for having an extremely long life with very low maintenance, in fact many gates installed over 100 years ago remain in service today! Primarily used at the end of a pipeline or to cover a wall opening, cast iron sluice gates / penstock are best suited for submerged applications with high head, large amounts of present debris, corrosive environments, and for critical in-plant flow control. The cast iron penstocks series is constructed from traditional materials designed to provide robust and reliable products for water and sewage applications.
Stainless Steel Penstock / sluice gate is a fabricated gate, it designed for high performance and long service life. Stainless Steel penstock generally use of 304L or 316L SS results in long term corrosion resistance lengthening the life of the gate.