Hello friends, today I am going to tell you Construction of single action reciprocating pump, Differentiation between Centrifugal Pump and Reciprocating Pump, Single acting Reciprocating Pump, Working of Single Action Reciprocating Pump :If you also want to know, then keep reading this article completely.
Single acting Reciprocating Pump
Whenever a constant flow is required irrespective of the pressure change, reciprocating pump is used. 150 bar or more. This pump is very useful at high working pressure.
Construction of Reciprocating Pump- The main parts in this are as follows
(i) Suction Pipe- It connects the cylinder to the reservoir, its one end with the cylinder and the other end is submerged in water. A flat valve and a vessel are installed under it.
(ii) Cylinder- In this cylinder a piston rotates back and forth through which the water rises from the reservoir by pressure.
(iii) Delivery Pipe- The water coming from the cylinder is delivered by this pipe.
(iv) Suction Valve- It is installed between the cylinder a suction pipe which allows the water to enter the cylinder from the reservoir, but prevents the water from going back to the suction pipe from the cylinder.
(v) Delivery Valve- This cylinder is installed between a delivery pipe. Allows water to pass through the cylinder into the delivery pipe, but does not allow it to return.
Read more : What is a Centrifugal Pump
Working Principle of Single acting Reciprocating Pump :
This pump is mainly a piston which rotates back and forth in the cylinder. Suction and delivery pipe are connected in the cylinder. In this pipe there are valves which are known as suction valve a delivery valve. These valves are meant to open in only one direction. Thus the suction valve allows the water from the pump to the cylinder and the delivery valve to the water from the cylinder to the delivery. The piston of the pump is connected to the crank by a rod. When a prime mover engine or motor is rotated at the same speed, the piston in the cylinder moves back and forth.
Suction Stroke- Suppose the piston is at its left extremity. When the crank is rotated from = 0° to 180°, the piston moves from its left extreme to the right extreme, that is, the piston comes out. Due to this action, air is released from the cylinder. There a partial vacuum pressure is created. in cylinder vacuum , the atmospheric pressure in the pump pushes the water into the suction pipe, then opening the suction valve and the water enters the cylinder. In this state the piston is at crank = 180° from its right extremity and the cylinder is filled with water. In this state the suction valve is closed and the delivery valve is at the limit of opening. It opens with little pressure. This action is called suction stroke.
Delivery Stroke/Exhaust Stroke-When the crank rotates from = 180° to 360°, the piston moves from its right extremity to the left extremity and exerts pressure on the water of the cylinder. Due to this pressure, the water opens the delivery valve and goes into the delivery pipe and goes up to the desired height. This action is called delivery or exhaust stroke.
Working of Air Vessel-In the first half part of the delivery stroke, the piston moves with the acceleration due to which the water in the delivery pipe rises with a higher velocity than the average and the extra water goes into the air vessel and on it to reduce the volume of the air. exerts pressure. In the last half part of the delivery stroke, the piston moves with a deceleration so that the water rises in the delivery pipe with less than average velocity. The water collected in the air vessel flows uniformly in the delivery pipe.
Similarly, in the first half suction stroke of the suction pipe, the water goes into the air vessel fitted in the suction pipe and in the last half stroke from the air vessel into the cylinder.
Read more: What is Bernoulli’s theorem?
Difference Between Centrifugal Pump and Reciprocating Pump
Centrifugal Pump
- Its efficiency is less at high top and more at low top.
- It is also suitable for dirty water.
- Due to its small size, it occupies less space.
- There are no anomalies in it.
- Priming is necessary in this.
- It has less wear and tear.
- They are easy to maintain
- and the cost of running is low.
Reciprocating Pump:
- Its efficiency is high at high top and less at low top.
- It is only suitable for clean water.
- Due to its large size, it occupies more space.
- There are anomalies in it.
- Priming is not necessary in this.
- It has a lot of wear and tear.
- It is not easy to maintain.
- It costs more to run.
Read more: What Is Pascal’s Law
what did you learn today:-
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