24/01/2024, 02:08 In double acting reciprocating pump suction and delivery strokes occur together. When the plunger moves forward, it makes the water to move out from the cylinder through the

discharge valve at right side and the adjacent suction valve is closed in position. At this moment, the suction will be created inside the cylinder which draws the water into the cylinder through left side suction valve whereas the adjacent delivery valve is closed. During the reverse stroke, the water moves out from the cylinder through the delivery valve at left side, and the adjacent suction valve is closed in position. It is positive displacement pump in which plunger or piston moves back and forth in a closely fitted cylinder, displaces a given volume of water for each stroke. The water is drawn from the pump and filled into the suction side of the cylinder. Due to the reciprocating action of piston or plunger the water is fed to discharge side and it is emptied to the delivery pipe. DISCHARGE VALVE CLOSED SUCTION STROKE FORWARD STROKE SUCTION VALVE OPEN DISCHARGE VALVE OPEN DISCHARGE STROKE https://fmc-nitk.vlabs.ac.in/exp/reciprocating-pump/theory.html dio SUCTION VALVE CLOSED LEFT SIDE Virtual Labs GAME REVERSE STROKE 15 RIGHT SIDE Did DISCHARGE VALVE OPEN DISCHARGE STROKE SUCTION VALVE CLOSED DISCHARGE VALVE CLOSED SUCTION STROKE Virtual Labs An MoE Govt of India Initiative SUCTION VALVE OPEN Working of Double Acting Reciprocating Pump Components of reciprocating pump: 1. Crank: It is a circular disc attached to the motor and used to transfer the rotation motion of the motor to the piston. 2. Connecting rod: It is a long solid rod. It provides connection between crank and the piston. It also converts the rotation motion of crank into the linear motion of the piston. 3. Piston: Piston is a solid cylinder like part of the pump which moves linearly in the hollow cylinder of the pump. Its motion is a main reason behind suction and delivery of the liquid. 4. Cylinder: This is a metal tube-shaped casing which is generally fitted with a metal lining called a 'cylinder liner ! The liner is replaceable when it becomes worn and inefficient. The cylinder is also fitted with suction and discharge ports which contain special spring loaded valves to allow liquid to flow in one direction only - similar to check valves. 5. Suction pipe: Pipe which takes liquid from the source and provides it to the cylinder of the pump is called suction pump. 6. Suction valve: It is one way valve placed between suction pipe and cylinder of the pump. It is open when suction takes place and close when delivery of the water is taking. 7. Delivery pipe: It is a pipe which takes water from the pump and provides it to the tank. 8. Delivery valve: It is oneway valve placed at the point of attachment of delivery pipe with cylinder. It is opened when delivery of the water is taking place and closed when suction of the water is taking place. 9. Strainer: It is a filter like part provided at the end of the suction pipe.Its main function is to solid particals from entering into the tank. 10. Air vessel: Air vessels are a closed container, in which the half part is filled with water & upper half 1/1/nDELIVERABLES: 1) Open the virtual lab experiment link, and go through the theory part, then see the theory part of the sample report attached in reference. 2) Attempt the theory part (including equations used) for the virtual lab experiment in the same way as done in the sample report (attached in reference).