Shaft-extension Tubular Water Turbine / S-type Cross Flow Turbine
1. Basic Data
|Rated Flow||4.15 m3/s|
|Cross Flow Turbine|
|Turbine Type||Shaft-extension Tubular Turbine|
|Runner Material||Stainless Steel (06Cr13Ni4Mo)|
|Cooling Way of Bearing||Water Cooling|
|Water Turbine Generator|
|Generator Type||Synchronize, Horizontal|
|Rated Power Factor||0.8 (Lagging)|
|Braking Way||Oil Braking (from governor)|
|Auxiliary equipment||governor, electric panels and so on|
Any other sizes are available according to customers' special
GDY269-WZ-90 type turbine
GD—Tubular fixed blade turbine;
WZ—Horizantal main shaft;
90 – Nominal diameter of runner, 90 cm
2. Brief introduction of turbine structure and main component
This shaft-extension type tubular turbine shall be horizontal
shaft, fixed runner blades and adjustable guide vanes. Water flow
shall be led from water inlet casing pipe through stay column,
distributor, runner, draft tube and be drained to tail water canal.
Water flows through turbine to make its potential energy and
dynamic energy be converted rotational mechanical energy on turbine
shaft which can drive generator to rotate for power generating.
Turbine and generator shall be connected through coupling of
bearing housing, and be used governor to realize start, parallel,
increase and decrease of load, and stop.
GDY269-WZ-90 turbine consists of 8 parts : assembly of water inlet
part, Thordon bearing, distributor, rotational part, runner chamber
and draft tube cone, regulating mechanism, draft tube bend embedded
part, thrust bearing housing. (total weight of turbine is around
Turbine outer water passage shall consist of connection pipe of
water inlet, stay column, outer ring of guide vane, runner chamber,
draft tube cone, draft tube bend etc.
Connection pipe of water inlet, stay column shall be adjusted well
and be grouted into 1st stage of concrete. Stay column has 2 footings. Draft tube cone has
one footing which is fastened on foundation buttress. Draft tube
bend is fastened by 2 footings which parts of them shall be grouted
into 2nd stage of concrete. In order to be convenient for installation and
maintenance, runner chamber and draft tube cone shall be split into
2 parts, which it shall be connected by flanges between draft tube
cone and draft tube bend.
2.1 Assembly of water inlet part
Diameter of turbine water inlet pipe is 1440 mm, which on its top,
it shall be opened 300×540 mm rectangle hole for the use of
installation inside bulb body, and on its bottom opens Φ120
drainage hole for the use of maintenance.
Stay column shall consist of 4 columns, 2 footings and inner ring.
It shall be on top of stay ring installed pressure meter which can
measure the pressure at water inlet. Radial bearing shall be
installed on lower half of flange of inner ring. Weight of
components within water passage of turbine, dynamic load shall be
transmitted to concrete foundation through stay column.
2.2 Assembly of Thordon bearing
It shall be adopted imported Thordon bearing from abroad for this
turbine bearing which is assembled with bearing housing under
frozen condition of dry ice. After it is put under normal
temperature indoors. It shall be done fine processing on inner
diameter of bearing to dimension regulated by indoor temperature.
On this half of bearing, it is opened water sump which is
guaranteed its axial line on upper location so that it can store
lubrication water. (Note : clean water for lubrication). Bearing
shall be installed on inner ring of guide vane, which can
transmitted torque to concrete foundation through connection
between inner ring and stay ring.
2.3 Assembly of distributor
This part shall mainly consist of outer ring of guide vane, guide
vane seat, inner ring, 16 pics.of guide vane, control ring,
pressure ring, guide vane sleeve, guide vane arm, connection plate,
140 pics.of Φ30 steel ball and 32 pics.of joint bearing, which its
weight is around 1.94 tons.
It shall have split pressure ring for control ring, which can
adjust adapter plate between split pressure ring and control ring
to make control ring to be in condition of automatic centering to
reduce friction of steel balls for making less friction torque of
Axial line between guide vane and turbine shall be formed
inclination of 80°, which is cone arrangement. Profile or airfoil
of guide vane shall be space twisted streamline, which its range
for rotational angle shall be 0~75°.
Guide vane shall be adopted inblock cast with its structure of 2
fulcrum. In order to be convenient for installation, it shall be
equipped guide vane short shaft on inner ring which is matched with
shaft end hole on guide vane inner ring. Inside guide vane stem
hole, it shall be pressed GS-2 steel back composite sleeve which is
lubricated by clean water. Material for guide vane upper sleeve
shall also be adopted GS-2 steel back composite sleeve which is
pressed into guide bush. Guide vane seal shall be adopted rubber
ring which is tightly pressed by seal pressure ring.
Adjustment for the clearance between upper and lower guide vane
section shall be realized through the thickness adjustment by bolt
at guide vane stem and adapter plate ring.
It shall send alarm signal when shear pin is blocked and cut by
foreign matter among guide vanes or between guide vane and inner
& outer ring for protection of other components non-destroyed.
It shall be equipped with shear pin and shear pin signal
accnounciator on every 16 pieces of guide vane. When there is any
blocking between the inner and outer ring in the guide vane, the
shear pin should be triggered and
Connection rod ball pivot shall be adopted GE20ES standard joint
bearing for prevention of dust to go into bearing. It shall be
equipped bearing cover to guarantee free actuation of guide vane
connection plate, guide vane arm.
In order to limit opening of guide vane, it shall be assembled
limitation block on inner ring of guide vane seat.
2.4 Assembly of regulating apparatus
It shall be adopted servomotor and steel fork head on control ring
to form a link mechanism by which governor can control guide vane
opening to realize start/stop of generating unit, adjustment of
2.5 Assembly of rotational part
Rotational part shall mainly consist of runner, main shaft, short
shaft etc. which is important part. Potential and dynamic energy of
water flow shall be transmitted into rotational mechanical energy
through runner to generator shaft via turbine and become electric
power. Therefore, rotational part shall act as the function of
energy conversion and transmission.
Runner shall be the heart of turbine, by which turbine energy
conversion shall be realized and completed. So, it shall have high
efficiency, excellent anti-cavitation performance to guarantee
generating unit economic, stable operation. Runner blades shall be
adopted GDY269 runner which is researched and developed by
Runner shall have 3 blades which is welded with runner hub. It
shall be processed CNC milling machine when processing runner
blades so that it can be strictly controlled streamline, degree of
wave and roughness to guarantee high efficiency of turbine.
haft diameter shall be Φ180 mm with its length : 2640 mm. It shall
be adopted forged steel 45for main shaft, while forged steel 35 for
2.6 Assembly of runner chamber and draft tube cone
This part shall consist of runner chamber and draft tube cone.
In order to be convenient for installation and maintenance, it
shall be adopted split structure for runner chamber and draft tube
cone for easier measurement of gap between runner blades and top of
2.7 Assembly of thrust bearing housing
This “assembly of thrust bearing housing “shall have the function
of axial thrust centering. This part shall consist of thrust shaft,
thrust bearing housing, 29336 self-aligning thrust roller bearing
(GB5859-94) and 32236 tapered roller bearing (GB297-94), copper
thermal resistance etc. When installation, it shall be adjusted the
thickness of adapter plate at bearing pressure cover to give
pre-tightening force to bearing. It shall have 2 holes at seal part
of thrust bearing housing for dismantling bearing. On upper part of
thrust bearing housing, there is a M22×1.5 hole for filling #30
turbine oil to lubricate bearing, which shall not be less than
min.oil level. On upper location of bearing housing, there is right
angle connector where it can be filled cooling water. On lower
location of bearing housing, there is right angle connector where
it can be drained cooling water to guarantee working temperature
less than 60℃. It shall be installed coupling on the right of
thrust shaft coupled with generator shaft so that turbine can
transmit energy to generator for realization conversion from water
energy to electric power energy.
Working temperature: ≤60°C
Anchor bolt: M22×1.5
Turbine oil: #30 oil
Working temperature of cooling water: ≤28°C
2.8 Assembly of draft tube elbow and embedded part
This part shall mainly consist of draft tube bend, draft tube cone
and packing type sectional seal etc.
Draft tube bend shall be the structure of welding plate. It shall
be connected with draft tube cone via flange (cylinder type
connection) with its adjustment clearance : 15 mm and fastened by
bolts and nuts which can withstand attacking from water to draft
tube elbow to improve stability of generating unit. This function
shall be making water flow from draft tube cone to concrete
diffuser. Water shall turn a corner with its sectional shape
equivalent to equal diameter of spherical shape. In order to reduce
hydraulic loss, water flow in draft tube elbow shall only be
changed flow direction while its velocity shall be constant.
Shaft shall pass through bend pipe horizontally where it has
packing seal around such location and it shall be equipped
1/4″water inlet pipe and supplied lubrication water for packing,
and 11/2″water drainage pipe to drain its water leakage. Adjust
M10×60 bolt on packing cover to change pressure of spring for
The old hydropower plant and tubular turbine generator unit
The layout out drawing
Cross Flow Turbine Parts and Generator
Fuchun Industry Development Co., ltd Shenzhe is an experienced
manufacture and engineering Company in small scale hydro power
equipment ( 50Kw to 50Mw). We play the role of manufacture and EPC
contractor and could supply water to wire equipments and services.
We provide customers with the complete package, from the design and
manufacture of the turbine, generator and control equipment through
to installation, commissioning and ongoing repair and maintenance.
1.Water Turbine Generator Unit Design & SUPPLY
2.Hydropower equipment supply
3.Feasibility study of hydropower project
5.Installation & Supervision
6.Commissioning and Training service
7. Hydro power plant rehabilitant
8. Hydro power plant spares supply
Our factory occupies 560,000 square meters of land,which inculdes
18 workshops,over 320 sets of heavy and precision producing and
testing machinery;scientific research development center in the
southern China,and various testing facilities.Besides of our 50
years industrial experice and expertise, we also hold close ties
with several research institutions and universities in this field
in order to maintain advanced technology and to develop new
products.More than 20 kinds of our products have been granted
national or provincial technical progress and excellent products
awards.We fully carry out the ISO9001 quality management system.Our
products can meet IEC standard and CE requirements.
Horizontal Lathe, MC1363 cylindrical grinding machine, B1016A
facing machine,Two points closed pressural machine, CQ5250 CNC
Double Column Vertical Lathe, CNC Flame Cutting machine, 500T Press
machine 500T, VacuumPressure Impregnating, the production line of
resin-bonded sand and so on.
Packaging & Shipping
standard export packing, wooden cases, structural steel, seaworthy packing
Usually we guide the installation. We will dispatch engineers to
site.(electrical engineer, mechanical engineer, control engineer
and a translator according to requirement)
Please send the basic data of your project to us, then we can do
the spcial design according to your requirment and quote for you:
4.Generator outgoing line voltage:__Kv
5.On-grid or Off-grid type? (On-grid type voltage:____Kv)