Horizontal split multistage centrifugal pump (API610/BB3)

1. Shell: axially split and supported near the center line. The pump inlet and outlet flanges are arranged on the pump body. The inspection and maintenance of the pump can be easily realized without moving the inlet and outlet pipelines, and the rotor balance and inspection are simplified. and installation, inspection and modification of pump body flow channels, and modification of spare parts rotors.

2. Impeller: precision casting, dynamic balancing and individual fixing of each impeller. The impeller is an interference fit, and each stage impeller adopts a stepped shaft structure for easy installation and maintenance; DN80 (outlet) and above specifications can be equipped with first-stage double suction Impeller to improve cavitation resistance NPSH.

3. Axial force and radial force balance: The impellers are arranged back-to-back symmetrically to self-balance the axial force. The intermediate bushing and throat bushing balance the residual axial force. The thrust bearing only bears a low load; the volute is symmetrical up and down. Arrangement designed for minimum radial forces to obtain smaller shaft deformations and bearing loads.

4. Bearings and lubrication: The bearings use oil ring self-lubricating structure bearings or forced lubrication structure bearings according to the shaft power and speed. The whole series adopts bearing isolator type seals and carbon steel bearing boxes. The bearing boxes can be fan-cooled or water-cooled. Cooling available.

5. Shaft seal: The sealing system implements the 4th edition of API682 "Centrifugal Pump and Rotary Pump Sealing System" and can be configured with various forms of sealing, flushing, and cooling solutions.