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Shinko has manufactured more than 9,500 sets of R type steam turbines since the development of our first cargo oil pump turbines and ballast pump turbines for oil tankers in 1960. To this date, we have constantly focused on improving product quality, operation performance, and many other aspects.In recent times, the following considerations have also been more vital due to escalating fuel prices, prevention of air pollution, and other environ-mental issues:

●　Improving the efficiency of cargo oil pump turbines

●　Reducing fuel consumption

In these situations, we have accelerated multiple improvements to the turbine performance using the CFD analysis method.

The vertical R models are Curtis single-stage or Rateau 3-stage steam turbines with a single reduction gear. We have the following 5 standard models classified by maximum output:

GENERAL CHARACTERISTICS

Curtis single-stage Rateau 3-stage

8 × 0.1

600

8500

6.45

100

300

5 × 0.1

190

3

8

2300

1300

7200

6.65

125

400

270

4.8

15

3500

1850

7200

6.06

1.85

280

‐80kPa ～ 0.03MPaG

Counter-Clockwise facing toward pump

150

500

Forced lubrication（turbine oil ISO VG68）

7.2 × 0.04

280

5

15

Woodward UG25+

Rated × 100 ～ 50％

4500

2000

7200

6.11

150

500

280

5.7

15

5500

4000

7200

7.17

150

600

320

7.3

20

6800

RX 0 RX 1 RX 2-2 RVR 1 RVR 2-2

1

1625

1002

1001

2124

2106

1433

2107

2108

1050

1460

2101

1325

8001

1322

1306

13011401

In order to ensure ease of inspection and maintenance of the casing interior as well as simple overhauling of the rotating element, consideration has been given to the following points in our design.

1. The steam chest and reduction gear casing are split vertically.2. The pipe connections for the steam inlet, LO inlet and outlet, and drainages are fitted on to the casing body.3. The reduction gear casing cover is fitted to the casing body with a hinge.

DESIGN & MATERIALS

2

SOLENOIDVALVE

TURBINE ROTORBEARINGSOIL JET FOR GOVERNORDRIVING GEARINGOIL JET FOR LO PUMPDRIVING GEARINGREDUCTION GEARBEARINGSOIL JET FORREDUCTION GEARING

LO COOLER

Coolingwater

LO STRAINER

LO TANK

MAINLOPUMP

PRESS.ADJUSTINGVALVE

CHECKVALVE

PRIMINGLO PUMP

ELECTRICSOURCEAC 440V60Hz・3φ

CHECKVALVE

ELECTRIC WIREOUT OF SUPPLY

SUMP OILLO PRESS

STEAMAIR PRESS.

TACHOMETERTRANSMITTERROTOR

OVERSPEEDTRIP

RESETKNOB

HANDTRIPKNOB

LIMITSWITCH

LIMITSWITCH

UG10DWOODWARDGOVERNOR

M

SteamInlet

Tonozzle

O

S

TRIPSERVO-

　　MOTOR

GOVERNOR &EMERGENCYSTOP VALVE

PRIM.LO PUMPSTARTER

PUMPROOM

FromExhaust

PS FOR HIGH

BACK PRESS. TRIP

PS FOR OVER

DISCH. PRESS. TRIP

PS FOR

PRIM. LO PUMP

PS FOR LOW

LO PRESS. TRIP

PS FOR LOW

LO PRESS. ALARM

GAUGE BOARD(Mounted on hull)

EXHAUSTSTEAMCHEST

LUB.OIL

GLANDSTEAM

SPEEDCONTROLSWITCH

TACHOMETERINDICATOR

TRIPMASTERIND.LAMP

RUN.IND.LAMP

CARGO　CONTROL　ROOM

RELAY BOX

THERMO-SWITCHES FOROVERHEAT ALARM & TRIP

GROUP BOARD(Mounted on hull)

DISCON.SWITCH

STOPSWITCH

TRIP RESETPUSH BUTTONSWITCH

STOPVALVE

Suc.Disch.

PRESS.TRANSMITTER

STOPVALVE

Air P.

SOURCELAMP

TRIP CAUSEINDICATION LAMP

TACHOMETERINDICATOR

CHECKVALVE

ELECT.SOURCE

ELECT.SOURCE

ELECT.SOURCEAC100～220V

UPPERBEARING

PUMPCASING

BULKHEADS. BOX

LOWERBEARING

Speed Control System Turbine Gland Seal

Lubrication System

Tachometer (Patented)

The Woodward UG or PG governor is employed on the turbine and its speed can be adjusted between 50%~100% of the rated speed by operating the control switch in the cargo control room, or on site.

The turbine glands are sealed with labyrinth packing when the exhaust steam is led to the vacuum condenser.

To prevent air from entering into the turbine casing, sealing steam is led to the turbine glands. The sealing steam first passes through the throttle steam valve and then the safety orifice in order to reduce its pressure to 0.01~0.08MPaG before reaching the turbine glands.

During operation of the turbine, the LO is supplied to the bearing metal, reduction gear, and other components through the main LO pump.Besides, in order to maintain safe operation, an independent electric motor driven priming LO pump is utilized. When the turbine starts, it is inter-locked so as not to start even if the inlet steam valve is open until the pressure of the LO line reaches between 0.02~0.03MPaG. On the contrary when the turbine stops, the priming LO pump stays operating to keep the LO pressure at 0.02 to 0.03MPaG until the turbine stops completely.

This tachometer, having three functions showing the number of revolutions, the running indications, and the overspeed trip, is a patented electronic system. As shown in the figure below, this system is composed of a transmitter, receivers, and speed relays, and needs no external power source.

43

Alarm & Trip Systems Rotor Axial Movement Trip (Option)

High LO Temp. Level AlarmLow LO Level Alarm (Option)

Alarms and trips are very important functions to avoid pump & turbine trouble, and automatic actuation is essential. Alarm items are command, which informs to operate the equipment attentively. The contacts of each alarm signal are sent to a Cargo Control Room (CCR). Depending on the alarm, it is necessary to take an action to reduce the turbine speed at CCR or to visit the machine side (pump or turbine) to verify the abnormality of the equipment.

In the case that the turbine rotor moves abnormally in an axial direction for some reason, the moving and stationary blades may come into contact and may cause severe damage. This trip is fitted in place with a 1mm clearance （C） from the shaft end. When the thrust bearing wears down by 0.7mm and clearance （C） becomes 0.3mm, the turbine is tripped.

In the case that LO temperature rises to 53℃ or the LO level lowers from normal level to 60mm due to LO line failure, the thermo switch or float switch actuates sending alarms to the CCR/ECR respectively.

Each trip is designed to stop the turbine by closing the governor valve automatically.The trip signal activates the local trip-solenoid valve (Trip:off) via relay box, resulting in the release of LO pressure and the closure of the governor valve.The signals to the CCR are as follows;Trip cause indication lamps are provided on the local relay box and the trip signals are sent to the master trip lamp in the CCR.

5

STANDARD SPARE PARTS 〔per ship〕Relay box auxiliary relay Relay box pilot lampRelay pilot lamp globe Relay box fuse element Solenoid valve coil (set*=all units of the same model and application)

Journal bearing metalThrust bearing metal Each kind of spring Special gasket & packing LO cooler cooling tube Priming LO pump ball bearing

1/set*1/set*1/set*1/set*

2.5% of total amount/set*1/set*

1/set*10% of total amount/set*

2/set*100% of total amount/set*

1/set*

6

Printed in Japan 2017.11.50 N.H.

RVR 1RVR 2-2

A24202435

B920985

C620565

D880885

E233331

F513611

G400400

H I650750

J17102060

K15271833

L680830

M988

1176

N880

1035

O630635

P465490

Q190220

R1427

S810900

T1150

850

UR1460R1690

VR510R615

W200250

X23302330

800800

Model

RX 0RX 1

A17141890

B15001750

C280395

D455505

E405450

F360400

H600830

J K107189

L830850

M12401580

N12071405

P382460

Q680800

R676950

S425465

T190190

U3232

V12001200

W350385

X1

200200

X2

R1110R1338

YR385R455

Z1

530600

650950

RX 2-2 1949 1780 405 495 480 400 830 255 970 1760 1527 532 850 1025 465 190 32 1200 360 200 R1540 R527 630 1150

Z2

200200200

Model

E

F N

V

G

HR

K

U

（60°）

MIN.DISASSEMBLINGEXTENT

J

I

W

PO

Q

X

T

M

DC

B

A

S

L

TURNING HANDLE

EXHAUST

COOLINGWATER

STEAMINLET

Ｘ１

Ｑ

Ｊ

Ｚ１

Ｚ２

Ｌ

Ｎ

Ｋ

Ｘ２

（60°）

Ｙ

MIN.DISASSEMBLINGEXTENT

Ｍ

Ｐ

TUBEMAINTENANCE SPACE

Ｕ

ＦＤ

Ｈ

Ｖ

TURNING BAR

ＷＢ

Ｃ

Ｔ

Ａ

Ｅ　　

ＳＲ

MAINTENANCE SPACE

STEAMINLET

EXHAUST

COOLINGWATER

Dimensions：mm