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BB5

TDTDA Horizontal Multi-Stages Style Barral Pump

General

Horizontal,multi-stages, radially split or axially split, barrel type centerline mounted multi-stages centrifugal pumps.The series pumps compile with API610 standard BB5 type.

Application

TD(A) series pumps are designed for high temperature and high pressure working conditions,especially for conditions intended to suffering thermal shock.The pump operates more reliably when pumping flammable or hazardous liquid with higher pressure.

Refineries

   ■ Power plants

■ Petrochemical plants

■ Coal processing

■ Gas processing

■ Cryogenics engineering

■ Offshore industry

Performance

Nozzle sizes DN:   50400mm

Capacities Q   6720m3/h

Head H            2500m

Operating pressure P 26.0MPa

Operating tempeature T-80450

Symbol

TD (A80  120 × 12  A

          ⑥

 Series

 Inner casing axially split

 Design capacitiesm3/h

 Single headsm

 Pump stages

⑥ Hydraulic model

Design

◆ Hydraulic modelsEach pump size have two or three types of hydraulic modelsfor different operating conditions the best efficient hydraulic model can be selected.

Balancing partsThe balancing drum balances most of the hydraulic axial forces.The residual thrust is absorbed by thrust bearing.

◆ Barrel casingDouble casingback pulling out constructionand the inner casing are section-ring casings or axially split casings. The barrel casing centerline mounted with set pin hole in the bottom. Ductile cast should be used when pressure is greater than 15MPa.

◆ Support structuresHeavy duty shaft design and bearings support having heavy duty carrying capabilityroller bearings, or sleeve bearings with oil ring lubricatedwater cooledor sliding bearings with forced oil circulation.

◆ NozzleThe suction and discharge nozzied with same pressure grade are vertically arranged. Allowable nozzle loadings compile with API610.

◆ Shaft sealingThe shaft sealing chamber compiles with API682 specifications; single, double or tandem cartridge type mechanical seals are available. The pressure in seal chamber is only the same as suction.

Materials

Carbon steel, chrome steel, or Cr-Ni-Mo stainless steel.

Standard API610 material classesS-5, S-6, C-6, A-7, A-8, D-1, D-2. Other choices can be selected when needed.

Superiorities

The pump have its own superiorities compared with BB4 type pumps.

Higher pressure sustaining possibility. Only the barrel and casing cover withstand the discharge pressure,Section-ring casings only wihtstand the pressure diference,the leaking ways is minimized.The gaskets are reliable between the barrel and the casing cover.

Minimize the effect of heat shock and deformation. Both the inner casings and the rotors are surrounded by pumped liquid and uniformly heated. For high temperature operating conditions, the pump evenly permit start-up without preheating.

Easy dismantling and maintenaces. The inner unit including the casing and rotors can be removed entirely from the barrel without dismantle the piping lines.

Excellent safety. When pumping hazardous liquids, the possibility of leaking is minimized because of the barrel.


BB5
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