Product Overview
DB22/KSMK series heavy-duty petrochemical process pump is a horizontal, single or two-stage, radially split centrifugal pump equipped with double-suction or single-suction impeller and both-end and central bearing, designed according to the standard of API610 VIII Petrochemical and Natural Gas Industry Centrifugal Pump and API682 Shaft Seal System of Centrifugal Pump and Rotary Pump (API610 BB2 Type)
This pump is specially designed to satisfy rigorous demands and heavy-duty station operation conditions, widely used in refinery, petrochemical industry and other industries to transport liquids of neutral or corrosive, clean or with micro granules as well as in barren liquor pump and rich liquor pump with large synthetic ammonia device or methanol device.
Performance Range
Flow: up to 2,300m3/h (10,125gpm)
Head : up to 740m (2,430ft)
Design Pressure: 5.0 or 11.0Mpa
Working Temperature: -80~+450℃
Discharge DN 50 ~ 300 mm
Structural Features
Pump Casing: Radially split body, with central bearing, and suitable for high temperature operation.
The pump casing with large size is of double volute, which can reduce the radial force and make the liquid in impeller running evenly and symmetrically.
The inlet and outlet pipes are at the upper part of the pump body and the wearing parts can be inspected and the rotor parts can be changed without dismantling the pipes or pipe system.
Pump Cover: adopt symmetrical covers and improve the simplicity of repair and maintenance and application flexibility. The design of the cooling cavity reduces the sealed operation temperature and ensures the safe operation.
Impeller: Single-suction impeller adopts balanced holes or back-to-back deployment of two impellers to balance axial force.
Double-suction impeller automatically balances the axial force of the rotor to reduce net positive suction head.
Shaft: Rigid, able to ensure the stable operation of the pump with working speed.
The heavy-duty shaft with short span of bearing is endowed with most twisting strength and high reliability.
Pyramid shaft extension makes the coupling, bearing and seal convenient for dismantling and reduces repair time.
Bearing: Coupled angular contact ball bearing and deep groove ball bearing can ensure the bearing capacity of heavy-duty operation condition.
The air cooling or water cooling structure reduces the temperature of the bearings and improves their service time.
When the rotation speed and service time of the rolling bearing are restricted, sliding bearings are adopted to ensure the safe operation.
Shaft Seal System: designed according to API682 Shaft Seal System of Centrifugal Pump and Rotary Pump, equipped with flush pipes system and cooling system.
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