Overview
Tubular turbines (S-type or bulb) keep the water passage nearly straight, minimizing head losses at very low heads — the economic choice for irrigation canals, weirs and low-gradient rivers.
Available as S-type with horizontal shaft or as bulb units, with gearbox or direct drive, fully integrated with our SCADA and electrical equipment scope.
Typical Applications
- Irrigation canals and existing weirs (2–15 m net head)
- Very low-gradient rivers and channels
- Plants where civil works must stay minimal
- Electrification of flat rural regions
Technical Specifications
| Net head | 2–15 m |
|---|---|
| Unit output | Engineered to site flow |
| Configuration | S-type (horizontal shaft) or bulb |
| Flow regulation | Fixed or adjustable blades |
Ranges are design envelopes — each unit is engineered to your measured net head and flow.
Scope of Supply — Complete Unit
- Runner
- Main shaft
- Bearings
- Speed governor
- Excitation system
- Inlet valves
- Control system (SCADA)
In-House Machining & Quality Control
Every runner, shaft and part is machined and inspected in our Zhangjiajie factory — 30,000 m² of land with 14,000 m² of production floor — critical tolerances are never outsourced.
- CQ5263 vertical lathe — max turning Ø 6,300 mm, workpiece up to 50 t
- C5235 vertical lathe — Ø 4,000 mm, 30 t
- CW61125 horizontal lathe — 8,000 mm (shafts & rotors)
- Z3080 radial drill — Ø 80 mm
- 315T hydraulic press
- Runner dynamic balancing on our horizontal balancing machine — imbalance measured and corrected
Engineering ranges
| Net head | 2–30 m |
|---|---|
| Configuration | bulb, shaft-extension (S-type) or vertical tubular |
| Unit output (new sets) | up to 20 MW |
| Refurbishment | booster-drive → direct-drive conversions delivered |
Selected track record
| Station | Turbine – generator model | Sets |
|---|---|---|
| Enshi Tangkou, Hubei — HPP modernisation | 4 × 11 MW units · oil-free blade pitch + governor retrofit | 4 |
| Laos (export) — Kaplan refurbishment | 15 MW Kaplan unit refurbishment | 1 |
| Guangxi, China — six-station renovation programme | refurbishment across six plants | 6 |
| Gaohua & Jiefangshan, Fujian & Hubei | fixed-blade runners converted to adjustable pitch | 2 |
Full reference list available on request.
CREDENTIALS
Frequently Asked Questions
What site data do you need to quote a turbine?
Net head and flow are the two essential figures — site location and grid connection point help us refine the layout. Send whatever you have: our engineers will tell you within 48 hours what the free preliminary study requires.
Do you supply spare parts after commissioning?
Yes. Runners, shafts, bearings, nozzles, needles, deflectors, seals and governor parts are manufactured on plan and supplied throughout the plant’s life.
Can you support installation and commissioning on site?
Yes. TC supplies and supervises the electromechanical installation, and HIER Madagascar provides local execution, O&M and logistics across Sub-Saharan Africa.