Product Design
B.gif (56944 bytes)

The ESES / 2002
WIND PUMP


A sophisticated new design 3 kw wind pump which is capable of pumping water at a rate varying from 1 to 12 cubic meter per hour depending on the depth of water wells and average wind speed available on the selected sites.

All ESES2002 wind pumps incorporate the following design concept:

Rotor. The rotor is mounted on the high speed main shaft and drives the pump via a gearbox, crank arm, and pump rod. The rotor consists of an hexagonal steel hub, 6 twisted blades having 23į setting angle and 6 spurs 2íísteel tube. The rotor is attached to a semi- spherical nose that governs the air flow around the blades to minimize the drag forces and assure high performance. The rotor weight is 136 kg.

Main shaft. The main shaft is contained within a heavy casing which is mounted to the strongly build chassis. The main shaft is keyed at itís front to the hub and at itís back is supported by 2deep groove bearings which maintain the alignments by absorbing radial and axial forces caused by the rotor.

Eccentric gearbox. It consists of 2 machined gears of different diameters fitted into 2 shafts. The driven gear wheel has 93 teethes and is driven by the 27 teethes pinion gear. The gear ratio is 3.44 and an eccentric 168 mm distance between the 2 - gear rotation axis to improve the stability of the wind pump. The gearbox weight is 185kg.

Transmission. The main shaft drives the pinion and the pinion drives the driven gear.The crank arm fitted on the driven gear runs the cross head in up and down movement and in turn the water is pumped. The weight of both the crank arm and the cross head is 15kg.

Yaw system. The function of the yawing system including the tail vane and the 168 mm eccentric distance between the 2 rotation axis is to provide at increasing wind speed the required moment that allows the rotor to be gradually turned out of the wind, thus limiting the rotational speed of the rotor. The gear box frame rests on the tower by way of a sliding bearing. This bearing is used to orient the rotor blades towards the wind direction, also it transmits varying loads from the rotor to the tower structure. The yaw bearing is provided with grease drip tray to protect it against weather influence.

Anti yawing mechanism When the wind direction changes, the yawing movement of the wind pump is transmitted through the crank arm to the cross head by means of 2 ball bearings and pivot joint. This rotation is absorbed by using 2 conical roller bearings surrounding an anti yawing shaft. These 2 bearings resist also the tensile forces resulting from the weight of both the water column and pump rod . Another 4 pivot joints and connections have assymbled together and have a total length of 60 cm under the cross head. The cross head require a 6 months regular lubrication by greasing. The anti yawing system is designed for:

  • permit rotation of the hub and the upper part of the pump rod with respect to the lower part.
  • prevent the lower part of the pump rod from rotation in the up-down strokes.

Brakes. A patent mechanical brake is used as an over speed control, it is mounted on a transversal shaft which is activated by the side vane and spring lever mechanism to slow down and decrease the rotation of the rotor gradually at high wind speeds. An additional steel arm having 2.5-meter length is connected to the gearbox to stop the yawing movement manually.

Pumps. The pumps are made of high quality corrosive - resistant stainless steel, cylinder, piston, and valves. In order to eliminate using brass or leather seals, production of all pumps is based on a patented design known as hydrodynamic sealing as shown on the following figure. The produced pumps have various groove geometry and small holes passages between the piston upper surface and itís cylindrical side. This is in order to create a lubrication water film and to allow for all impurities and clay particles contained in the pumped water to pass down, and to not adhere and deposit at the cylinder inner shell.

Model

Type

Pumping head(mm)

Diameter(meter)

Weight(kg)

HA280

suction

280

1-6

68

HA140

deep well pump

140

7-25

56

HA125

deep well pump

125

25-45

52

HA88

very deep well pump

88

45-80

49

HA50

very deep well pump

50

80-95

41


Maintenance. The maintenance required for these wind pumps is practically nil. The bearings are greased for the machines working life. An occasional check to make sure that the bolts have not loosened, is the only maintenance required. The working life of the wind pump is estimated at a minimum of 10 years and an average of 15 years.


AA.gif (59941 bytes)
Transmission System

 

THE HA SUBMERSIBLE
PUMPS

The HA pumps have been designed and developed specifically to be coupled for the ESES/2002. The pumps are made of high quality corrosive - resistant stainless steel, cylinder, piston, and valves.

In order to eliminate using brass or leather seals, each pump consists of a patented hydrodynamic sealing with various groove geometry and small holes between the piston upper surface and itís cylindrical side in order to create a lubrication water film.

For different applications with respect to pumping head, 4 different types of pumps are available:-
   

HA280 suction submersible pump.It has 300mm diameter, installed at (1m-6m) below ground level, for pumping from surface water(lakes or canals) or shallow wells. The pump weight is 62kg

HA140 deep well pump.It has 140mm diameter, installed at (8m-25m) below ground level, the pump weight is 56 kg.

HA125 deep well pump.It has 125mm diameter, installed at (25m-45m) below ground level, the pump weight is 52 kg.

HA 88 very deep well pump.It has 88mm diameter, installed at (45m-80m) below ground level, the pump weight is 48 kg.

 

C.gif (124258 bytes)
Piston hydrodynamic sealing
 

          Home | Energy Projects | Environment | Reports | Contact us

You are visitor number 210654 since February 2010