Hydro turbine permanent magnet alternator
Product Description
Open channel axial hydroelectric generator is composed of micro axial hydraulic turbine and generator mounted in one shaft. Hydraulic turbine is mainly composed of inlet guide vane, rotating impeller, draft tube, main shaft, base, bearing et al. As high pressure fluid is guided into draft tube, vacuum is formed. Upstream water guided byinlet channel and volute would enter guide vane and force the rotor to rotate.
Therefore, the high pressure energy and high velocity dynamic energy is transformed into power.
Diagrammatic and Assembly drawing of open channel axial turbine
Diagrammatic and Assembly drawing of belt drive axial turbine
The vertical open channel axial-flow generator set is an all-in-one machine with the following technical advantages:
1.Light in weight and small in size, which is easy to install, transport and maintain.
2. The turbine has 5 bearings, which is more reliable.
Technical parameters
Product picture
The design of inlet vortex chamber
The following figure shows 2 types of tail pipes. Varying diameter and straight pipe is more easy to made. In general, the maximal diameter of tail pipe should be 1.5-2 times of the impeller diameter.
Gradually expanding type tail pipe is introduced as follows:
There are two types of gradually expanding type: welding type and prefabricated type.
It is easy to weld the draft tube. It is recommended to select the welded structure as far as possible. When determining the height of the welded draft tube, it must be considered that the water outlet will be submerged by 20-30cm.
Select the proper volute based on the axial turbine. Find a stiff paper and cut a volute model using the parameters shown in the following Table. Build concrete volute using brick and concrete. Possible leakage of volute is not allowed. To reduce
hydraulic loss, the surface of volute should be as smooth as possible.
Main geometric parameters of inlet vortex chamber
Drawing of Axial Volute
1. The inlet grille intercepts the sundries entering the inlet channel. Regular cleaning is required.
2. The dam functions as water storage, sedimentation and overflow should be strong enough.
3. The bottom of the dam should be provided with drainage pipeline for regular drainage.
4. The inlet channel and vortex chamber shall be made according to the instructions.
5. The submergence depth of draft tube shall not be less than 20cm.
Draft tube
The draft tube can be made by welded using iron sheet or constructed by brick and concrete. We suggested using welded draft tube. When determining the height of welding draft tube, it must be considered that the water outlet should be submerged by 20-30cm.
We mainly introduce the construction of draft tube using brick and concrete. First, build mold of draft tube and outlet using wood. To separate the mold with cement easily, the mold should be covered by paper or plastic paper. In the mean time, smooth surface of draft tube could be guaranteed. The main dimension of draft tube and outlet are shown in the following
Main Dimension of Draft Tube and Outlet Module
Then, build brick around the mold of draft tube. Paint concrete on the brick with a thickness of 5-10cm. Remove fixed guide vane from micro axial turbine and fixed it on the top of draft tube. To ensure the stable operation of turbine unit, it is required that the guide vane should be strictly vertical, as shown in following figure. To reduce hydraulic loss, the surface of draft tube should be as smooth as possible.
The Dimension of Draft Tube and Outlet Module
Take out the module when the concrete is firm. The solidification of concrete usually takes 6 to 7 days. After the module has taken out, check if there is any leakage. Leakage holes should be fixed before the installation of turbine generator. Install the turbine generator on fixed vanes and fixed the generator in the horizontal direction using rope or iron wire.
Installed axial turbine
Factory picture
Contact Us
ALife Solar Technology Co., Ltd.
Phone/Whatsapp/Wechat:+86 13023538686
E-mail: gavin@alifesolar.com
Building 36, Hongqiao Xinyuan, Chongchuan District, Nantong City,China
www.alifesolar.com
