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Bulb turbine generator Unit（Revised Standard Version）
Category: Power generation equipment
Product Introduction
The bulb tubular hydro-generator unit is a horizontal tubular hydroelectric unit, primarily applied in run-of-river hydropower stations with low heads (below 25m) and large flow rates. The generator is completely sealed and positioned upstream of the turbine, housed within a bulb-shaped metal casing. The main shaft of the generator is directly connected in-line with the main shaft of the turbine runner. Water flows axially into the unit, passes tangentially through the blades, and discharges axially through a straight conical draft tube. The entire shaft system, guide bearings, and thrust bearings are all arranged inside the bulb casing. This design features a straight flow passage and excellent hydraulic performance.
Core Structure & Product Features
1.Excellent Hydraulic Performance: The water flow passage is straight and smooth, resulting in minimal hydraulic losses. It features a large specific discharge, high specific speed, and high power generation efficiency.
2.Low Civil Works Investment: The main unit has a relatively compact overall size, which helps reduce the civil construction costs of the hydropower station.
3.Horizontal Integrated Structure: The generator and bearing system are entirely enclosed within the sealed bulb casing, with the main shafts connected horizontally. The entire unit is supplied as a modular package, including a complete set of equipment: water turbine, generator, governor, excitation system, inlet valve, and oil pressure device.
4.Wide Range of Specifications: We offer multiple series and models, such as GZ008WB, GZ114AWP, and GZ111BWP, to adapt to various operating conditions of head, flow rate, and power. With a power output ranging from several thousand kilowatts to tens of thousands of kilowatts, these units are perfectly suited for small and medium-sized low-head hydropower projects.
Scope of Supply
Complete Unit Package: Includes the water turbine, synchronous generator, governor, excitation system, control valve, and oil pressure device. All components can be customized and matched based on specific project parameters.
Reference Project
The Guilin Xianfeng Hydropower Station is a practical application of this model. The project encompasses complete factory manufacturing and internal component assembly, followed by on-site installation, commissioning, and successful operation.
Application Scenarios
Suitable for run-of-river, small and medium-sized hydropower stations with low heads (under 25m) and large flow rates, designed to harness the hydropower resources in the gentle, lower-reach sections of rivers.
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International Standard Term |
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Bulb turbine generator unit / Bulb tubular hydro turbine generating National Standardization of UNIT ... |
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net head / water head |
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run of river hydropower station |
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straight conical draft tube |
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guide bearing |
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thrust bearing |
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governor |
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excitation device / excitation system |
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oil pressure unit |
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unit discharge |
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unit rotational speed |
Keywords:
Bulb turbine generator Unit（Revised Standard Version） Power generation equipment
Bulb turbine generator Unit（Revised Standard Version）
Power generation equipmentMetallurgical and mining equipmentEnvironmental protection equipment
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