API610 BB2 Chemical Process Pump

BR Type Petrochemical Process Pump

API 610 Radially Split BB2 Type

Product Description

BR petrochemical process pump is a horizontal type, radially split, between bearing centrifugal pump, one or two stages. It is designed according to API 610 standard, BB2 type. Its basic form is single stage structure, and its impellers are grouped into double suction. This series of pumps are designed strictly in accordance with the standard in terms of pump support, bearing arrangement, connections provisions, cooling and flushing, cavity structure etc. Reasonable design enhanced the universality of components, reduced maintenance time and numbers or types of spare parts required.

Connection provisions for temperature measurement, vibration test and pressure test are available.

This type of pump has good hydraulic performance, comprehensive performance ranges, high efficiency and anti-cavitation performance.

According to different working conditions, BR series pump has many configuration types in order to optimize mechanical design. Different sealing chambers all meet API standard, different seal forms also can be selected.

Operation parameters:

Flow Range： 125~3000 m3/h

Disch. Head Range：~600m

Max Design Pressure： single stage 5.0MPa，2 to 3 stages 11.0MPa

Temp. Range： -40~450ºC

Definition of Pump Model：

Application Fields：

This series of pumps are widely used in below fields:

● Crude oil transfer, oil refining, petrochemical industry, coal chemical industry   

● Coal chemical industry, natural gas processing

● Power plants, Nuclear power plant

● Offshore drilling equipment.

It can transfer all kinds of neutral or corrosive, clean or particle-containing liquid under normal or medium temperature.

Design Features:

Hydraulic Design：

According to large numbers of test data combined with the utilization of various type of hydraulic analysis software, its hydraulic performance reaches present advanced international level. This series of pump has comprehensive performance ranges, high efficiency, and good anti-cavitation performance. The pump adopted double volute design, therefore balance the radial force. It also has two-stage and triple-stage structures, the first stage can be double suction or single suction.

Bearing Structure:

Integral cast bearing chamber. Under different power, revolution condition, roller bearing, sleeve bearing, or forced lubrication method could be adopted in order to ensure the reliable operation of pump. According to different working conditions, cooling method can be fan cooled or water coils cooled. Meanwhile, there are connection provisions in bearing chamber for bearing temperature test, chamber temperature test and vibration test by customer. This can provide remote monitor and ensure the safety and stability of the pump.

Sealing:

API 682 Standard seal chamber size, it is suitable to install cartridge and non-cartridge mechanical seal, single end mechanical seal or double ends mechanical seal or tandem mechanical seal. Packing gland can also be adopted, and standard auxiliary system can also be provided.

Shaft:

Heavy duty large diameter shaft designed, thrust bearings are arranged back to back to transfer shaft torque and minimize shaft deflection in sealing area.

Base plate：

The design conforms to API610 standard, welded base design and grout base design is robust design(can be customized).

Flange :

Both suction and discharge flanges can be arranged on top .Different flange standard can be selected so required. Pipe load conforms to API610 Standard.

Axial force balance:

Basic double suction impeller design, there is no hydraulic axial force. Sub-impeller back seal ring and balance hole of two and tripe stage structures are used to balance axial force , to minimize hydraulic thrust. Residual axial force is balanced by thrust bearing in non drive end.