Submersible pump

1. KAMLA NEHRU INSTITUTE OF TECHNOLOGY
SULTANPUR -228118
SUBMITTED TO:
Asst. Prof .Mani Bhushan Singh
SUBMITTED BY:
Abhinav Srivastava
ROLL NO : 19503
BRANCH :Mechanical Engineering
SUMMER INTERNSHIPAND INDUSTRIAL
TRAINING
SUBMERSIBLE PUMPS

2. Contents
S.NO TOPIC Slide No
1 History 3-3
2 Construction of Borewell 4-5
3 Introduction 6-11
4 Winding of Submersible Pumps 12-13
5 Install a submersible pump 14-16
6 Conclusions 17-17

3. 1. History
• In. 1928 Armenian oil delivery system engineer and inventor Armais
Arutunoff successfully installed the first submersible oil pump in an
oil field. In 1929, Pleuger Pumps (today Pleuger Industries)
developed the design of the submersible turbine pump, the forerunner
of the modern multi-stage submersible pump.
• In the mid 1960’s first fully developed submersible pump was
developed.

4. 2.Construction of Borewell
• Identification of Suitable site for drilling
• Dimensions : 6 inches diameter bore well are usually drilled for large apartments , while initially
larger diameter bits are using for drilling so as to place the casing pipes.
• Determining yield while drilling.
• Calculating water level in well from ground.
• Drinking quality of water in bore .
• Type of pump : For depths up to 150 feet Jet pumps are sufficient, while the best suited pumps are
submerged centrifugal pumps.
• PVC casing pipes should adhere to IS 12818.
• Casing pipes need to installed at the depth where water is finally struck to prevent silt from
entering the well which may end up jamming the pump.

5. Fig 2.1: Borewell drilling

6. 3. Introduction
• A submersible pump, also called an electric submersible pump, is a pump that can be fully
submerged in water. The motor is hermetically sealed and close-coupled to the body of the pump.
• A submersible pump pushes water to the surface by converting rotary energy into kinetic energy
into pressure energy. Electric submersible pumps are multistage centrifugal pumps operating in a vertical
position. Liquids, accelerated by the impeller, lose their kinetic energy in the diffuser, where a conversion of
kinetic to pressure energy takes place.
• The design prevents the pump from cavitation and is considered to be more efficient than a jet
pump.
• Submersible pumps are used for pumping Groundwater, Dewatering applications, Transfer of
Fluid, Agitation of Fluid, to provide water for Irrigation as well as Drinking or Plant Process Water.

7. Fig 3.1: Submersible pump

8. 3.1 Types of Submersible Pumps
1. Deep Well Pump
2. Stainless Steel Pump
3. Bottom Suction Pump
4. Oil Filled Pump
5. Water Cooler Pump
6. Submersible Utility Pump
7. Mixed and Axial Flow Pump

9. 3.2 Working of Submersible Pumps
• Principle : The working principle of this pump is, it pushes the underground water to the surface
through changing energy from rotary to kinetic and finally into pressure energy.
• These pumps are considered multi-level centrifugal pumps operating in the vertical position. Fluids
that are augmented by impeller will drop off their kinetic energy in the diffuser and here the
conversion of kinetic energy to pressure happens.
• Other parts include the radial bearings (bushings) distributed along the length of the shaft,
providing radial support to the pump shaft.
• An optional thrust bearing takes up part of the axial forces arising in the pump, but most of those
forces are absorbed by the protector's thrust bearing.
• There are also screw-type submersible pumps, there is a steel screw which is used as a working
element in them. The screw allows the pump to work in water with a high sand content and other
mechanical impurities.

10. Fig 3.2 : Working of submersible pumps

11. 3.3 Advantages and Disadvantages of Submersible Pumps
Advantages
• High rate of water discharge
• Little attention required
• Small investment for large capacity
Disadvantages
• External power source required
• Lower volume compared to trash pump
• Small solid size capacity

12. 4. Winding of Submersible Pumps
4.1 Submersible winding wires:
A submersible winding wire is also known as a poly winding wire . These wires are
known to get immersed in water; thus, it is highly preferred in the marine industry.
• A submersible winding wire bears high tensile strength.
• The winding process becomes easy with the use of these wires as they are flexible.
• These wires are resistant to wear and tear.
• A submersible wire enjoys a greater lifespan than regular wires
• They possess high dielectric strength

13. 4.2 Waterproofing the submersible motor cable - supply cable joint
• Submersible Motors are supplied with a 3-core PVC insulated flat cable of length
3 meters.
• The free end of the 3-core cable of the motor needs to be connected to supply
cable from the control panel.
• As this joint is always nearly submerged in water, the joint needs to be waterproof.
Fig 4.1 : Winding of pump

14. 5. Install a submersible pump
5.1 Topping up the motor:
• The submersible motor is supplied pre-filled with a mixture of clear cold drinking
water and anti-corrosive liquid. The following steps are executed prior to
installation.
• Position the motor vertically on its base.
• Check if all fasteners are tight. Tighten if required.
Fig 5.1 Topping of motor

15. 5.2 Checking direction of rotation of motor
• Direction of rotation of the motor shaft matches the direction marked on the
visible cable box top face.
• The direction of rotation is counter-clockwise when viewed from the motor shaft
end as marked on the cable box.
• If the direction of rotation is in the same direction as that marked on the cable box
face, the connections are correct.
• In case the direction of rotation of the motor shaft does not match the marking on
the cable box in three phase motor, interchange any two lead wires at the control
panel and confirm as before.
Fig 5.2: Direction check

16. 5.3 Electrical installation
• Use a single cable from Control Panel right up to Submersible Motor.
• Ground the Submersible Motor.
• Ensure the joint is waterproof as cable joint is submerged in water.
• The cable must not be coiled if it is of extra length. Any excess should be cut off
before the connections are made.
• Connect the cable properly to starter terminals to avoid loose connections.
• Factor in low voltage operation while selecting cable size.
5.4 Control panel
It is recommended that the Control Panel incorporate the following:
• Contactors of sufficient current ratings with overcurrent relay.
• Over voltage and under voltage protection.
• Phase failure protection.

17. 6.Conclusion
• Submersible pumps have a wide range of ratings for capacity, pumping speed and
energy use.
• Liquids with a high solid content, corrosive and abrasive fluids pose a particular
problem, as do liquids containing solid material that can cause damage to a pump.
• More viscous liquids and pumping applications at greater depths require stronger
pumps that are designed to enable them to function properly.

18. THANK YOU