Mechanical Seals & Pumps

  When water enters the casing (Inlet Nozzle), the impeller begins to rotate. As a result, the fluid inside the impeller also rotates, creating a centrifugal force that causes the fluid to move toward the inner peripheral surface of the casing. Eventually, a higher pressure is created at the inner peripheral surface, and at a suitable point (Discharge Nozzle), the fluid exits the casing. The action of the impeller increases the fluid’s velocity and pressure and also directs it towards the pump outlet.                 Labelled Diagram:    Mega CPK-Chemical Process Pump    

  Numerous components make up each centrifugal pump. Many centrifugal pumps share a few parts in common. These parts can be split into the mechanical end and the wet end. The wet end of the pump includes those parts that determine the hydraulic performance of the pump. The two primary parts of wet end are the impeller and casing . The components that hold the impeller within the casing are part of the mechanical end. The Pump shaft, Mechanical seals, Bearings, Bearing housing etc. are all part of the mechanical end of the device. Hydraulic & Mechanical assembly & CPK-Chemical Process Pump

  Centrifugal pump is used to transport fluid by conversion of rotational kinetic energy into hydrodynamic energy of the fluid flow. It is the hydraulic machines which converts the mechanical energy into hydraulic energy. This hydraulic energy is in the form of pressure energy. These pumps work by using a rotating impeller to create a centrifugal force that drives the fluid out of the pump and into the desired location. Centrifugal Pumps are used in various Industries as follow : Chemical industry  Petrochemical industry Process engineering Refinery Renewable energy Food industry  Sugar industry Steel industry Oil and Gas KSB-Etanorm Pump

API Plan 54 Pressurized external barrier fluid circulation from a central pressure source or by a stand alone pumping unit Required Media Characteristic- Suspended solids Polymerizing and contaminated media Poor lubrication properties Hazardous / environmentally harmful Leakage may form solids Close to vaporization point Can tolerate dilution with barrier media Feature - Ensures higher flow rate, better heat dissipation and positive circulation of barrier fluid. Uses a pump to ensure barrier liquid circulation and pressurization. API Plan 62                            Required Media Characteristic- Caustic & Crystalizing Fluid Oxidizing fluids Polymerizing fluid High temperature Leakage may form solids Feature - Quench stream is brought from an external source to the atmospheric side of the seal faces It cools the seal faces and  reduce cooking, oxidation, Crystallization etc. Depending ...

                                             Bladder accumulator pressurize the buffer fluid and supplying clean liquid for an arrangement 3 pressurized dual seal.   Required Media Characteristic- Suspended solids Polymerizing and contaminated media Poor lubrication properties Hazardous / environmentally harmful Leakage may form solids Close to vaporization point Can tolerate dilution with barrier media Feature – Barrier fluid is pressurized by a bladder accumulator  Heat is removed from the circulation system by an air-cooled or water-cooled heat exchanger. Piston Cylinder pressurize the buffer fluid and supplying clean liquid for an arrangement 3 pressurized dual seal Required Media Characteristic- Suspended solids Polymerizing and contaminated media Poor lubrication properties Hazardous / environmentally harmful Leakage may form solids Close...

API 52 Reservoir providing buffer liquid for the outer seal of an arrangement 2 unpressurized dual seal Required Media Characteristic- Clean, non-polymerizing Hazardous High vapor pressure, flashing media  Feature - For media where product dilution is not allowed but leakage to atmosphere in diluted form may be allowed. Cooling coil inside the reservoir or an external water or air cooler takes care of the removal of generated heat. Pumping ring is used for circulation of barrier fluid Used for dual Mechanical seal. API Plan 53A Reservoir providing Barrier liquid for the outer seal of an arrangement 3 Pressurized dual seal.   Required Media Characteristic- Suspended solids Polymerizing and contaminated media Poor lubrication properties Hazardous / environmentally harmful Leakage may form solids Close to vaporization point Can tolerate dilution with barrier media Feature - Arrangement same as Plan 52, But instead of buffer fluid barrier fluid is used Barrier liquid enters the p...

API Plan 31 Recirculation from the pump discharge through a cyclone separator delivering the clean fluid to the seal chamber Required Media Characteristic- Suspended solids contains Very dirty process fluids or slurry fluid not allowed  Feature - Media from pump discharge enter the cyclone separator where clean media is sent to the seal chamber, and remaining fluid with high solid contains is sent to the pumps suction . Removes entrained solids from the process fluid. Pump throat bushing is recommended. Ensure use for services containing solids with specific gravity twice or more than that of process fluid. Efficiency of a cyclone separator is inversely  proportional to the diameter.           API 32 Injection of clean or cool liquid from external source into the seal chambe r     Required Media Characteristic- Suspended solids contains Poor Lubrication Hazardous   Media dilution is acceptable Feature - Close Clearance Throttle...