OTHER TYPES OF PUMPS==>>
=>AIR LIFT PUMP
=>JET PUMP
=>HYDRAULIC RAM
AIR LIFT PUMP==>>
Air lift pump working based on the mixture of water and air..IN such a pump , compressed air is forced into the well through a small air pipe and is released through a diffuser into the eduction pipe at the bottom of the well..
The air bubbles rise with water in eduction pipe ... The mixture of air and water is lighter in inside the pipe than the outside of the pipe, thats why it forced upward by hydrostatic pressure..
The reclaimed air is generally cooler than the atmospheric air and can be compressed more cheaply..
Air lift pumps can be used for high lifts upto 150 m..Their efficiency is generally low about 25 to 50 %...
JET PUMPS==>>
Jet pumps works same as airlift pump.. concept is same for both pumps bu arrangement is different.. Air is compressed in pipe by throat of pipe... and mixture of water and air upward the water due to hydrostatic pressure..
CONSIDERATIONS WHEN INSTALLING OR OPERATING JET PUMPS==>>
Inlet piping==>> Piping must be large enough to supply jet pump at maximum flow. Inlet pressure should be as specified in the performance data for the application.
Suction piping==>>To insure maximum capacity and highest possible vacuum, all suction piping must be airtight. When lifting liquids by suction, locate the jet as close to the liquid level as practical, with the
remainder of the elevation on the discharge side. Design pressure loss should not exceed two feet, including
strainer, foot valve and other piping at design suction flow rate.
Discharge piping==>> Piping should be equal in size to that of the pump. If discharge line is long, piping size should be increased to minimize the discharge head.
Start-up of steam jet pumps==>> When starting steam jet pumps, the steam valve should be opened slowly to enable the unit to start smoothly. All valves should then be adjusted to permit operation according to design conditions
CONSIDERATIONS WHEN INSTALLING OR OPERATING JET PUMPS==>>
Installation==>>Penberthy Jet Pumps will operate in any position. They should be installed with minimum length of piping and with as few elbows and valves as possible to limit friction losses.
Inlet piping==>> Piping must be large enough to supply jet pump at maximum flow. Inlet pressure should be as specified in the performance data for the application.
Suction piping==>>To insure maximum capacity and highest possible vacuum, all suction piping must be airtight. When lifting liquids by suction, locate the jet as close to the liquid level as practical, with the
remainder of the elevation on the discharge side. Design pressure loss should not exceed two feet, including
strainer, foot valve and other piping at design suction flow rate.
Discharge piping==>> Piping should be equal in size to that of the pump. If discharge line is long, piping size should be increased to minimize the discharge head.
Start-up of steam jet pumps==>> When starting steam jet pumps, the steam valve should be opened slowly to enable the unit to start smoothly. All valves should then be adjusted to permit operation according to design conditions
AIRLIFT PUMP
HYDRAULIC RAM==>>
Hydraulic ram based on water hammer pressure ..water hammer pressure is the pressure applied in inside the pipe due to water..when we suddenly close valve ..in inside the pipe positive and negative wave generate and increase the pressure in inside of pipe due to that pressure discharge increase..
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