BED/BDG.BDK Pumps are horizontal, double-casing, radially split, multistage, between-bearings pumps of a BB5 type (barrel pumps), in full compliance with ANSI/API standard 610 (ISO 13709:2009).
Feature
API 610 11th edition BB5.
Horizontal, Heavy Duty Barrel Pumps
Multi-stage with in-line impeller arrangement, Single suction impeller. option Double suction on special request.
Double, Barrel type, Radial split casing
Between bearings. Centerline mounted
The pump rotor is hydraulically unloaded by the oppositely arranged impellers fixed on the shaft by their press fit, embedded rings and shaft keys.
The outer casing is engineered and rated for the maximum allowable working pressure (MAWP).
Suction and discharge nozzles are directed vertically upwards. The pump supports are located on a centerline. The inner casing of a cartridge type consists of the radially split sections with metal-to-metal sealing and additional rubber rings completely eliminating internal circulation of the liquid. Due to a cartridge design the inner casing can be replaced on the site of operation without dismantling the outer casing.
The pump rotor is supported by the segmented bearings with forced lubrication system.
The residual axial force arising as a result of uneven wear of impellers’ seals during operation is accepted by the Mitchell type thrust bearing with self-aligning pads and leveling system.
An oil pump of the lubrication system can be optionally installed on the main pump shaft.
The rotor sealing can be either single or double mechanical type in accordance with API 682. Pressure in the sealing system is maintained by a hydraulic accumulator. The impeller of a mechanical sealing provides circulation of the barrier fluid that is cooled in a heat exchanger. The pump is connected with a drive through the elastic diaphragm coupling.
Benefits
Material combinations per API 610 as standard.
Other materials on special request.
Modular design for small and large number of stages.
“Blind”-stages for future upgrades available
Cast and forged barrel available
Standard or Full-Pull-Out cartridge available
Stiff shaft design
Stepped shaft and transition fit for easy maintenance
Thrust balacing by balance drum
APPLICATION
Water injection into reservoirs to maintain formation pressure
High-pressure oil refining processes and Boiler Feed
Various applications in petrochemical and gas processing industry
Gas condensate treatment units
Special design for hydraulic Decoking Applications Available
