SMSUBMERGED LIQUEFIED GAS PUMPSLNG PUMPSSMR
REMOVABLE INTANK PUMPSNo. 1 Pump in the World for LNG Carriers
In anticipation of the growing need for safe and clean energies,
our company began developing cryogenic liquefied gas pump in the 1970's.
In 1992, we supplied our first marine LNG pumps to a LNG carrier "Flora"
constructed by Kawasaki Heavy Industries, Ltd. Since then,our global market share has increased and now reached over 90%.
These LNG pumps have become one of our main products that supports
our company, much like our cargo oil pumps.
Our LNG pump specifications can adapt to the shale gas energy revolution
and other new demands, allowing us to receive a high reputationfrom customers worldwide.

23

SM

SUBMERGED LIQUEFIED GAS PUMPS

Shinko “SM” submerged liquefied gas pumps have been developed as cargo pumps for LNG
carriers based upon our rich experience in designing, manufacturing, and operating a large
number of discharge pumps, pressurizing pumps, and circulating pumps used at LNG terminals
or in LNG cryogenic power generating plants.
In order to operate submerged properly in cryogenic liquefied gas under harsh conditions, thepumps have been designed with the following various features:

SPECIFICATION

The vertical SM models are submerged liquefied gas pumps having 1,2,4 stages, and the following standard 13
models are available:
ModelItem

GENERAL CHARACTERISTICS

Max. capacity(m 3/h)Max. total head(m)Liquid temperature(˚C)

Discharge bore

The pump and motor are so constructed as toform a single unit and be submerged in the pumping liquid. Thus, there is no fear of liquid and gas
leakage because no sealing devices are required.
The motor is operated in liquid, and is completely
isolated from the atmosphere. Hence, there is nofear of an explosion.
Ball bearings are lubricated via the pumped liquid,
which is also used for cooling the motor.

4SM 6530165(V)Frequency(Hz)SM 65-2 SM 100
60

195

500

165195

SM 150135300170170

SM 202

SM 200

SM 250600
210SM 300 SM 300H SM 350

1000
170

170

1500
160

2100
195190−16350(mm)Voltage

65100

150200

250

3600

300

350

1800
4406600
60

CoilForm wound type

Insulation

Class FRating

Continuous
Full / reduced voltage start available

Starting method

PERFORMANCE CHART

Pump model can be determined from the following charts based upon the total head, and capacity:
600
500
450400SM50-4350

TOTAL HEAD m

The stator coil is constructed with a form wound
type having a high insulation property and rigidity.
Materials with a high insulation property, durability
and cryogenic resistance property are used for themotor insulation and varnish.

SM 50-2 SM 50-4

Synchronous speed (min -1)

An auto balance mechanism is located on theback of the impeller to balance the axial thrust inall operating ranges.
An inducer with high suction performance isequipped underneath the impeller. So, full capacity
operation is possible while unloading, leaving as
little residual liquid as possible.

SM 50

300
250200180160SM50-2

SM202

SM65-2SM300H

140

SM50120

SM65

SM150

SM100

SM250

SM200

SM300

SM350

10090
10152030

40506070 80

100

150

200

250

300

400

500

600

800

1000

1500

2100

CAPACITY m3 / h5SMR

REMOVABLE INTANK PUMPSShinko “SMR” removable intank pump is operated as an emergency cargo pump for an LNG carrier, it is usually kept in the deck store. In the event that an unexpected accident occurs to thecargo pumps, it can be used by being hoisted down inside the column in the cargo tank.

SPECIFICATION

The vertical removable SMR models are submerged liquefied gas pumps having 1 stage, and the following standard
3 models are available:

The pumps have been desingned with the following various features.

Model

SMR 150

Item

Type

GENERAL CHARACTERISTICS

Max. capacity(m 3/h)

350

600

1000

Max. total head(m)

180

240

240

Liquid temperature(˚C)−163150(mm)TypeThe motor is operated in liquid, and is completely
isolated from the atmosphere. Hence, there is no fearof an explosion.
Ball bearings are lubricated via the pumped liquid,
which is also used for cooling the motor.

SMR 250

Removable type 1 stage centrifugal pump

Discharge bore

The pump and motor are so constructed as to form asingle unit and be submerged in the pumping liquid.
Thus, there is no fear of liquid and gas leakage
because no sealing devices are required.

SMR 200

200250Submerged type 3-phase squirrel-cage induction motor

Synchronous speed3600(min -1)

Voltage(V)

440, 6600

Frequency

(Hz)

60

CoilForm wound type

Insulation

Class F

RatingContinuous

Starting method

Full / reduced voltage start available

PERFORMANCE CHART

Pump model can be determined from the following charts based upon the total head, capacity:

An auto balance mechanism is located on the backof the impeller to balance the axial thrust in all
operating ranges.

The stator coil is constructed with a form wound
type having a high insulation property and rigidity.
Materials with a high insulation property, durability
and cryogenic resistance property are used for themotor insulation and varnish.

TOTAL HEAD mAn inducer with high suction performance is equipped
underneath the impeller. So, full capacity operation ispossible while unloading, leaving as little residual liquid
as possible.

300

200

SMR150100
100200

SMR250

SMR200

300

400

500

600

800

1000

CAPACITY m3 / h67

SM SMRDESIGNSMSMR
1BALL BEARING

In order to support the rotating element,eachset of single row deep-groove ball bearings
is positioned at the upper and lower side ofthe motor.

21BALL BEARING2SHAFTThe common shaft of the pump and motor isdurable with a diameter wide enough toprevent distortion of the shaft in the courseof machining, overhauling and assembling.

33STATOR COIL

4ROTOR

5IMPELLER

68FILTER

84ROTOR

In order to minimize the vibration and tokeep the bearings in good condition, therotor is dynamically balanced with an impeller, an inducer, and other rotating elements.

9FOOT VALVE WITH MULTI SPRINGIMPELLER

The impeller is the single suction type having
three dimensional vanes, and is designed tostabilize its characteristic curve.

INDUCERThe inlet of the impeller is provided with aninducer with spiral blades in order to minimize the NPSH value.

7FILTERIn order to extract the liquid for lubrication ofball bearing and cooling the motor, a self-cleaning filter has been installed at the bottom of themotor’s inner frame.

8SUCTION STRAINER

To prevent the inducer and impeller frombeing damaged by foreign matter sucked
inside the pump, a suction strainer with adurable punching plate is positioned on theunderside of the pump casing.

9INDUCER

SUCTION STRAINERSTATOR COILConsideration has been given to insulation,
due to the fact that the coil is used in cryogenic liquid. For the stator, form wound coilwires have been given a mechanically-and-electrically integrated design using
special insulation materials.

57SHAFT

6

FOOT VALVE WITH MULTI SPRING

When the pump is installed in the column,
the foot valve is opened by the weight of thepump (active position). In order to improve
the suction performance, the pump is
designed to allow smooth passage by eliminating obstacles around foot valve.
In the case of a periodic inspection or an unexpected accident, maintenance can be done byhoisting up the pump from the column.
In this case, the foot valve is closed by aspring force (inactive position), and is sealedby Teflon packing which is fitted onto theseat face.

9TESTING FACILITY
Testing procedures

In 1973, we launched a testing facility specialized
for cryogenic liquefied gas pump that was the first

1. Testing is conducted with specified liquid (LNG)

of its kind to be built in Japan and certified by the2. Measurement, record and calculation of performance are handled by computers and the test records aresubmitted immediately after the tests.

Ministry of International Trade and Industry (thecurrent Ministry of Economy, Trade and Industry).

3. When there are more than two (2) pumps with the same specifications, full performance test is conducted
for one pump and reduced performance test is conducted for the other pumps.

Like all of our other products, our cryogenic liquefied gas pump are all subject to factory testing,

4. Four (4) pumps are tested a day and the overhaul inspection is conducted the following day in order toreduce the number of days necessary for testing.

which secures high quality of the products.

5. Testing is conducted concerning the following items:(1) Performance test
Performance test is performed at five (5) points (120％, the rated, 80％, 60％ and minimum flow).

PEROFRMANCE TESTS(2) NPSH test
NPSH test is performed at the rated flow.
(3) PUMP DOWN test
PUMP DOWN test is performed at the rated flow.

Testing Methods

Max.capacity of test pump ：2500㎥/ h
Test liquid：LNG, LPG, DME
Lowest liquid temperature ：−196℃
Design pressure：0.98MPa
Volume of LNG storage tank：50㎥
Volume of LN2 storage tank ：50㎥
Volume of LPG storage tank：26㎥
Volume of circulation tank ：23.5㎥

A shop test is carried out using LPG for LPG/DMEpumps and LNG for LNG pumps to measure the performance, and the NPSH level, and many other points.
In the case that several pumps with the same specifications are supplied to a plant/ship, a full performance
test is performed on only one pump, and an one point
performance test at the rated flow for the remaining
pumps.

N2 GASLEVEL GAUGEFLOWMETER

N2 GASL

TEST
PUMPTESTPUMP

TEST
PUMP

TEST
PUMPCIRC.
TANKHEATER

LN2L

VENT
STACK

CONDENSERLNG or LPG

TRANSFER PUMPBOGP

N2 GASN2 GASCONTROL VALVE

LPG/DME
STORAGE
TANK

L

STEAM

LN2STORAGE
TANK

L

LNG
STORAGETANK(4) Vibration measurement
Vibration is measured at each test point.
LN2Ps

PressureTs

Temperature

Pd

Pressure

Td

Temperature

Po

Differential Pressure

To

Temperature

Lt

Differential Pressure

V

VoltageI

Current

Pi

Input

Ac

Acceleration

CONDENSERDISCHARGE LINE

To

PoTd

L

Pd

NO.4
TEST TANK

10NO.3TEST TANK

NO.2
TEST TANK

NO.1
TEST TANKAcCIRCULATION TANK

Lt

ELECTRIC SOURCE
VP

VENT LINE

Testing FacilityITEST TANKTEST PUMPPi

SUCTION LINETsPs

11

Head Office
5-7-21, Ohzu, Minami-ku, Hiroshima, 732-0802, Japan
TEL +81-82-508-1000
FAX +81-82-508-1020
Tokyo Branch
6-1-8, Kitashinagawa, Shinagawa-ku, Tokyo, 141-0001, Japan
TEL +81-3-3441-6221
FAX +81-3-5488-7370
Kobe Sales Office3-1-16, Nakamachidori, Chuo-ku, Kobe, Hyogo, 650-0027, Japan
TEL +81-78-341-0919
FAX +81-78-366-2027
Overseas Offices
Amsterdam, Bangkok, Singapore, Shanghai, Dohawww.shinkohir.co.jp/G-302
Printed in Japan 2024.03. N.H.