TORISHIMATORISHIMABoiler Circulation PumpsBoiler Circulation Pumps

HLAVHLAV

ContentsContents

1. Technical Data 1. Technical Data 2. Operating Data 2. Operating Data

Training course 1

Technical Study

Date : 22. Jun. 2012

Des

ign

pres

sure

: kg

f/cm

2

1.Technical Data1.Technical Dataand Operating Rangeand Operating Range

Design pressureTotal headCapacityDesign temperatureSizesSpeed

Motor ratingVoltage

400

200

100

50

20

10 100 1000 7000

Tot

al h

ead

: m

CapacityQ : m3h

HLAV K type

HLV H type

HLAV C type

HLAV M typeHLV M type

326

255224

133

102

100 200 300 330 375 420

Design Temperature : C

up to 326 kgf/cm2 up to 320 mup to 6,840 m3/hup to 420 deg.C 2 to 16 in2900,1450,3500,1750 rpmup to 2,500 kWup to 11 kV

Tuticorin 2x500MW :370 deg.C x 214 kg/cm2

Tuticorin 2x500MW 　； 2987 m3/h x 31.04 m

Sample data for Training

1-2. Torishima BCP : Features - Benefits

(1) GENERAL DESIGN(1) GENERAL DESIGN

① Simple Structure→ Maintenance free and high reliability→ Easy start-up and shut-down operation.

② Direct connection of the pump and pipeline 　→No foundation work and easy installation

③ Vertical suspension type design→Less plant space required

④ Pull-out system design→Easy installation, overhaul and inspection work.

⑤ Glandless→ No Seal / No Leakage

⑥ Highly durable water- lubricated bearings→ Maintenance free bearings

⑦ Variable type of casings→ Spherical, volute or annular design

(2) PUMP DESIGN(2) PUMP DESIGN

(3) MOTOR DESIGN(3) MOTOR DESIGN

⑧ Effective motor cooling circuit→ Only low pressure cooling water is required (High pressure cooling water is not needed)

⑨ Wet-type coil motor→ High efficiency and reliability

・ High voltage application (up to 10kV)→ Contributes to power saving for the whole plant

DIFFUSER

MOTOR COOLER

THRUST BEARING CASE

THRUST BEARING SEGMENT (UPPER)

PLAIN BEARING (LOWER)

ROTOR

STATOR

HEAT BARRIER

MOTOR CASING

PLAIN BEARING (UPPER)

PUMP CASINGIMPELLER

SHAFT

STUD BOLT

MOTOR WINDING

BEARING BRACKET

THRUST BEARING PLATE

THRUST BEARING SEGMENT (LOWER)

FILTER

Construction Construction of BCPof BCP

① Simple Structure

Nozzle orientationSuction nozzle is arranged axially(end suction) and the discharge nozzleradially.

The nozzle can be provided with welding stub ends.

Nozzle

② Direct connection of the pump and pipeline

Nozzle

Motor

Casing

Heat barrier

Bearings

This vertical pump is suspended in the pipe line without any external supports.

No anchorage point in the piping system.

During overhauls, the pump casing canremain attached to the pipe line.

The motor unit, together with the heat barrier and the impeller, can be removedfrom the casing after unscrewing the tiebolts.

③ Vertical suspension type design

④ Pull- out system design

Casing

CasingThe motor casing is flange-jointed to the pump casing.

Pump and motor pressure depends on the system pressure.

⑤ Glandless design

Bearings

BearingsThe shaft is supported by two self-lubricated plain bearings.

Thrust Bearing

Bearings

The axial thrust is balanced by a self-lubricated thrust bearing.

AxialAxial BearingBearing

Thrust bearing plate in the form of an auxiliary impeller

Thrust bearing plate

Upper thrust bearing segment

Lower thrust bearing segment

Axial BearingAxial Bearing

Phenolic Resin

SUS420J2HCr Plated

Thrust Bearing

Bearings

The axial thrust is balanced by a self-lubricated thrust bearing.

⑥ Highly- durable water- lubricated bearings

Casing

Spherical casing

Shape of Pump casing

Standard type

Volute casing Annular casing

⑦ Variable type of casings

Forged casingCast casing

Heat barrierHeat barrierA heat barrier is provided betweenthe pump and the motor.

The heat barrier prevents heat transfer from the hot pump to the cold motor.

The heat barrier protects the motor winding insulation.

Heat barrier cooling water also prevents heat transfer especially stand-by mode

Insulation class : YMotor design temp. : Max 90degC

Heat Barrier Cooling Water Line

Sectional view of Heat barrier

MotorThe motor is filled with water.

The HP cooling water inside the motor iscirculated by a thrust bearing plate.

The motor heat is transmitted to the LPcooling water in the motor cooler.

Motor cooler

Stator

Rotor

Thrust bearing plate

⑧ Effective Motor Cooling Circuit

Motor winding(Stator coil)

Insulation class : Y

Design temp. : 90 deg.C

Insulation material : Polyethylene

⑨ Wet- type Coil Motor

FilterThe filter keeps the HP cooling water clean.

Filter

2. Operating Data

2.1 Pump set

- Pump name Boiler Water Circulating Pump

- Number of sets per unit 3 set/unit

- Product number Tuticorin 2x500MW

AP930016/ AP930024

- Designation Glandless Circulating Pump

- Design pressure 214 kgf/cm2

- Design temperature

- Pump 370 deg.C

- Motor 90 deg.C

- Hydrostatic test pressure 321 kgf/cm2

Sample data for Training

2.2 Pump

- Type Vertical Glandless Centrifugal Pump

- Fluid pumped Boiler water

- Operating temperature 355.5 deg.C

- Capacity 2987 m3/h

- Total head 31.04 m

- NPSH req. 15 m

- Nominal size

- Suction nozzle OD457.2 mm

- Discharge nozzle OD371.5 mm

2. Operating DataSample data for Training

2.3 Motor

- Type Wet motor

- Nominal rating 350 kW

- Nominal speed 1,470 rpm

- Frequency 50 Hz

- Voltage 3,300 V

- Nominal current 89.7 A

- Starting current 539 A

- Insulation of motor winding PE2/PA

(cross link polyethylene/polyamide)

- Motor normal temp. 50 deg.C (at upper motor cavity)

- Motor alarm temp. 63 deg.C (at upper motor cavity)

- Motor trip temp. 66 deg.C (at upper motor cavity)

2. Operating DataSample data for Training

2.4 LP Cooling Water

- Heat Barrier

- Cooling water quantity required 30 L/min

- Inlet temperature 39 deg.C

- Cooling water pressure required Approx. 1 kgf/cm2

- Motor Cooler (Over 400kW Torishima supply)

- Quantity of heat to be eliminated 41kW

- Cooling water quantity required 150 L/min

- Inlet temperature 39 deg.C

- Cooling water pressure required Approx. 1 kgf/cm2

2. Operating DataSample data for Training