The pump is a mechanical device used to lift water from a low level to high (or) low-pressure region to the high-pressure region. The main function of the pump is to change the energy from mechanical to liquid flow. The received energy from the liquid will be utilized to lift pressure. Nowadays, the submersible pump has gained a lot of popularity because these pumps are mostly used on farms. These pumps are arranged within the water. Similar to other kinds of water pumps, these pumps come in a broad range of types where each type of pump has its own applications. The pumps which are used in farms are applicable in wells, boreholes, and concrete water tanks. When used as a water distribution system, submersible pumps have certain advantages and disadvantages.
What is a Submersible Pump?
Definition: As the name suggests, the submersible pump is one kind of electric water pump and it is submerged fully within the water. An electric motor is sealed hermetically and connected closely to the pump. Designers of these pumps can design several general types of water pumps for making them appropriate for immersion. The motors used in these pumps are covered with oil-filled compartments that don’t have a connection with the substance they are pushing.
Submersible Pump Working 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.
This process can be done through the water being dragged into the water pump first, where the revolution of the impeller drives the water using the diffuser. So from this, it supplies to the outside.
Selection of Submersible Pump
The selection of this pump can be done based on several specifications. But selecting the right pump is important to enhance the achievement of the system. Mostly, these pumps are selected based on their type and application. After that, the utmost flow of discharge can be decided.
The maximum flow of these pumps can be decided by the pressure head. After that, consideration needs to provide to the highest discharge force of the water pump.
These pumps are estimated in terms of hp (horsepower), and it is a calculation of mechanical energy. The Horsepower can be defined as the work which is generated at a rate of 550 foot-pounds for every second, and it is equivalent to the energy of 745.7 watts. At last, the expulsion size of submersible pumps must be estimated. The estimated value has reference to the exit connections of pumps.
Advantages & Disadvantages
The advantages of submersible pumps include the following.
- These pumps are extremely efficient
- A lot of the energy can be conserved
- Handles solids & liquids
- These pumps become quiet in the water
- These pumps are versatile
- No priming is necessary
- Greater efficiency
- Both solids and liquid are managed easily
- Internal pressure is enough for pumping of water inside and no additional components are required
- These pumps have no cavitation problems
- When the water flows throughout the pump, then cavitation doesn’t occur due to no “spike” within the water force.
The disadvantages of submersible pumps include the following.
- The seals of the pump can become damaged over time.
- Caution must be taken for motors in pumps from overheat.
- It does not apply to all the applications.
- These pumps are hard to recognize as well as fix injures like cracks.
- It is expensive due to its mechanical nature
- As submersible pumps are sealed, this sealing gets rusted with time. Because of this water enters the motor and damages the device.
- Repairing of the system is complicated
- Every usage requires different kinds of pumps, and one pump is not enough for all purposes.
- If not completely immersed, there will happen huge damage
- When water is not sufficient it may cause overheating too
Applications of Submersible Pump
The applications of these pumps include the following.
- Submersible pumps are used in drainage, slurry & sewage pumping, water, and oil wells, saltwater handling, dirt treatment, drilling of the deep well, artificial lifts irrigation, fire fighting, mine dewatering, etc.
- These pumps are also used in the Navy, mining, rescue, fire services, and wastewater services.
1). Can submersible pumps run dry?
Submersible pumps will be dried when the fluid level crosses below the minimum level.
2). Why does a submersible motor fail?
The main cause of submersible motor fail is overheating and it damages the motor too.
3). Are submersible pumps better?
Submersible pumps are better because they have great efficiency and also need less energy for pushing water up.
4). What is the full form of the CRI pump?
In correspondence to the organization philosophy, CRI means Commitment, Reliability, and Innovation and it developed as a domestic term for pumping solutions.
5). How long will a submersible pump last?
Submersible pumps will have a life span of 8-10 years when these are utilized moderately, they can last up to 15 years.
Thus, this is all about an overview of the submersible pump. So this pump can also be used as a water supply source in populated residential areas. The benefits of this pump mainly include low initial cost, quiet operation, etc. Here is a question for you, what is submersible pump efficiency?