Green Energy Alternator Pelton Turbine Generator

Green Energy Alternator pelton Turbine Generator

Introduction of Hydraulic Pelton Turbine

Impact hydraulic turbine is a kind of hydraulic prime mover whose working jet center line is tangent to runner pitch circle, and runner blades are composed of a series of double bowl-shaped buckets. According to the arrangement of the main shaft, it is divided into two kinds of horizontal shaft and vertical shaft, no matter which kind of runner is always located in the atmosphere. This type of turbine is suitable for high-head and small-flow hydropower stations.

Pelton Turbine Components

1. Nozzle and Flow Regulating Arrangement (Spear)
Nozzle is used to increase the kinetic energy of the water that is going to strike the blades or vanes attached to the runner.
The quantity of water that strikes the blades is controlled by spear. The needle is installed inside of nozzle and regulates the flow of water that is going to strike on the vanes of the runner. A nozzle containing needle .
The conical needle present in the nozzle. It is operated by a hand wheel or automatically in an axial direction.
When the needle is move backward, the flow rate of water is increasesing and when it is pushed forward, the flow rate of water decreasesing.

2. Runner and Buckets
Runner is a rotating part of the turbine. It is a circular disc on the periphery of which a number of buckets evenly spaced are fixed.
The buckets are made by two hemispherical bowl joined together. Each buckets have a wall in between two hemispherical bowl called splitter.
The splitter splits the jet of water striking the buckets into two equal parts and the jet of water comes out at the outer edge of the bucket.
The buckets are designed in such a way that the jet of water strike the buckets, deflected through 160 degree to 170 degree.
The buckets of the Pelton turbine are made up of cast iron, cast steel bronze or stainless steel.

3. Casing
It prevents the splashing of the water and helps to discharge the water to the trail race. It also acts as a safeguard in the case of any accident occurs.
Cast iron or fabricated steel plates are used to make the casing of the 1000kw pelton hydro turbine generator.

4. Breaking Jet
When the jet of water is completely closed by pushing the spear in forward direction than the amount of water striking the runner becomes zero. But still the runner keeps moving due to the inertia of the runner.
In order to stop the runner in the shortest possible time a small nozzle is provided which directs the jet of water at the back of the vanes. This jet of water used to stop the runner of the turbine is called breaking jet.

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