Jeff Gumbrell

8/12/2019 Jeff Gumbrell

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Application and Adaptation of Traditi

LNG Pump Technology for the Grow

Small-Scale LNG Market


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Intro

As the demand for small scale LNG equipmadvances globally, manufacturers must methe demand with low cost, short lead timeproducts while retaining large scaleperformance and reliability.

To address this challenge, Ebara InternationCorporation has leveraged its 40 years ofcryogenic pump experience to develop smscale solutions utilizing proven technologies.


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Company

Manufacturer of custom engineered liquefiepumps and expanders

Division of Ebara Corporation, Japan

Over 200 Employees

Global Sales offices USA, London, Japan, China

Two test facilities, USA & Japan


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Established in

1973, USA

1979

Relocated to Sacramento,California

Built 1stTest Facility

1979-1984Division of Worthington

Pump Corporation

1984-1989Joint Venture Partnershipwith Ebara Corporation

1999

Shipped first Expander

Oman

2002

Shipped first Two-PhaseExpander

Odolanw Poland (Krio)

2007-08

Expanded Facility toInclude Motor Division

2008

Expanded Test Facility

2011 Purchased HoodMachine (Hood EIC LLC.)

2012 Ebara receives orderfor its 6000thmachine

Brief


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Expe

Over 6000 submerged motor liquefied gas pand expanders built to date

3 out of 4 submerged LNG pumps installed wbuilt by Ebara.


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Corporate Headq

Sparks, N


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Motor Manufacturing

Motors manufactured on site

to provide better quality, costand schedule control.

Engineering and qualitypersonnel can provide direct

assistance VPI tanks sized for large size

motors and high productivevolume


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Motor Manu


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Hood EI

Full Production machining

capabilities ASME code certification for

pressure vessel fabrications

Chinese ManufacturersLicense for Pressure Vessels

Located near EIC factory for

strict control of quality,inspection and schedule

Location allows directcommunication withEngineering & Operationsdepartments


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Innovation Developed first magnetic coupling pump in ammonia service

Developed only UL listed flexible cryogenic pump cables

EIC was the first to develop fuel gas pumps used for dual fuel

LNG carriers.


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Inn

Developed unique Thrust

Equalizing Mechanism (TEM

)to balance thrust loads incryogenic fluids.

Developed first variablespeed turbine expander forLNG service.

Only company to provide

continuous designimprovements for nearly 40years

First two-phase LNGExpander, recently achieving30,000 hours of successfulperformance!


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Product & Customer Totally submerged design means the motor is not in the

area

No rotating seals means no leakage of flammable gas intatmosphere

Machines safely accommodate caustic chemicals such as

Rotating components are contained within casings whichsubmerged within a secondary tank or vessel, further prpersonnel from potential hazards


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Quality system registered and in compliance wit

9001-2008 and ISO/TS 29001:2010 ISO/TS 29001:2010 is a new certification with more in

specific requirements for petroleum and natural gascompanies

Strict control over sub-suppliers

Internal auditing system to ensure departmentacompliance with established procedures

Dedicated Project Management system to ensureporting and document scheduling for custom

l


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Our Customers InclBechtel

BP

Brunei LNG

CB&I

Chevron

ChiyodaDaewoo Shipbuilding

Darwin LNG

Egypt LNG

Enagas

Equatorial Guinea LNG

Fujian LNG

Hammerfest Snohvit LNG

HQCEC

Hudong Zhongua Shipyard

Hyundai Heavy Industries

IHI

Japan Gas

JGC

KBR

Korea Gas

Malaysia LNG

MHI

Nigeria LNG

Oman LNG

Pertamina

QatarGas

Ras Laffan LNG

Saipem

Sakhalin LNG

Samsung HeavyIndustries

Shell

Sofre

Sonat

Techn

Tracte

Wood


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SMALL SCALE LNG

New applications for cryogenic pumping equipment


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Small Scale LNG Pump Appli

Land Based Fixed LNG fueling stations Mobile LNG fueling stations LNG bunkering station Small scale LNG liquefaction Locomotive LNG fuel pump Heavy equipment LNG fuel pump

Marine LNG fueled engine fuel pump


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Small Scale LNG Appli

LNG Fueling S Station Capacity

Tanks range from 15,000-30,000 gallons 15,000 gallons is the recommended minimum

Typical LNG Station Specifications One or two LNG dispensers Cold(3 bars-43.5 PSI), saturated (8 bars-118 PSI), and supe

(18 bar-260 PSI) vehicle refueling. Fueling flow: 10m3/hr

Typical LCNG Station Specifications 2 dual hose CNG dispensers Redundant LCNG pumps Fueling Flow: 800 Nm3/h


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LNG Fueling S

S S G


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Mobile LNG Fueling S

Features

Independency of Pipelines

Quick solution for pilot and

start-up projects

Performance equivalent to

stationary fueling stations Centrifugal pump flow rate of

10 to 50 m3/hr

20 or 40 ISO container


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LNG Fueled Locom EIC has partnered with

CN Railwayand Chart Industries inthe initial testing of thefirst LNG poweredlocomotive

LNG tender cars utilizesubmerged LNGpumps to supply LNGto the locomotiveengines

S ll S l LNG A li


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Marine Fuel S Key Specifications

Submerged vertical centrifugalpump mounted inside cargo tank

Submerged pump, or boostpump, transfers LNG to thesuction end of HP pumps

The reciprocating pumps increasethe low pressure LNG from theboost pumps to high pressure LNG

HP LNG then transferred to heatexchange system which vaporizesthe liquid to gas and then is fed toengines HP fuel control valves


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KEY DESIGN FEATURES OF EBARA L

PUMP TECHNOLOGY

Bringing large scale experience to the small scale market


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LNG Pump

Pump rotating assemblies are the same whether vessel

or in-tank retractable Well proven hydraulics with axial or radial diffuser design Materials are chosen based on strength, compatibility a

experience in cryogenic temperatures Design follows API 610 whenever possible Hydraulics are designed using the latest Computational

Dynamics (CFD) software to enhance efficiency andperformance Reliability is enhanced using specialized rotordynamic so

simulation Stiff shaft design low slenderness ration All computer predictions are tested to confirm accurac


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General Ebara Design Lower Bearing

Tail BearingUpper Bearing

EShaft/RotorAssembly

Motor Housing

Inlet Housing

Pump Housing Diffuser Housings

Diffuser VanesMulti-stage Impellers

Features: Radial Diffusers, 1 Piece Sha

Keys & Locking Rings to secure impelle


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Pump Shaft

Single Piece Design

Diffuser Ho

Radial Difshorter len

Interface inter-stageback of im

Pump Housing

Multi-stag

Impeller L

Retains impositive e

shaft

Radial Diffuser Design


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Be

Two main bearings at upper and lower end of th

Tail bearing can be used for long, multi-stage pshafts

Deep groove radial ball bearings

440C stainless steel balls and races with modifie

clearances Graphite impregnated resin separator

Continuously cooled and lubricated by pumpe


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H


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Ho

All housings manufactured from aluminum a

A356.0-T6

Castability

Low temperature strength and ductility

Pressure tightness

Low temperature stability


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S


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S

Stainless Steel 15-5 PH is selected for mecha

and magnetic properties.

Proprietary Manufacturing Technique ApplieControl Low Temperature Stability

Normally one-piece, two-Piece shafts are av

for specialty custom applications


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I


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In

All EIC pumps are fitted with a two-bladed h

inducer (axial flow impeller)

Inducer is matched to the impeller to providsmooth flow transition

Provides extremely low NPSHR valued allowi

maximum LNG cargo capacity

Thrust Equalizing Mechanism


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Thrust Equalizing Mechanism

Product lubricated bearings cannot tolerate thrust load

Dynamic system balances axial loads over entire flow ra

Pumped fluid is routed through controlled clearances topressure

Hydrostatic Bearing S


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Hydrostatic Bearing S

Supports very large radial loads.

Load does not depend on film thickness or lviscosity.

Long life (infinite in theory) without wear of bsurfaces

Provides stiffness and damping coefficients large magnitude. Excellent for exact positioand control.

Hydrostatic Bearing Config


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Hydrostatic Bearing Config

Orifice

(liquid feed port)

Pocket

(Recess area)

General view of Hydrostatic Journal Bearing

Hydrostatic

Bearing

Assembling view

Sup

Sup

Principles of Hydrostatic Be


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Supply pressure

(constant)

Support pressure Support pressure

Decreasing

Support

pressure

Supply pressure

(constant)

Increa

Supp

press

C

Eccentricity

Of shaft

Principles of Hydrostatic Be

Submerged Electric


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Submerged Electric

Integral Motor and pump contained in single un

Three phase induction type squirrel cage design

Double vacuum-pressure epoxy impregnation p

Random or form wound windings up to 6600 VA

Continuously cooled by pumped fluid

Sizes 5 to 3400 hp

Speed 50 or 60 Hz

Also operated on Variable Speed Drives

Foot/Suction


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Foot/Suction

Aluminum Alloy A356.0-T6

Spring Activated Dual PTFE High-Low Type Seal

Integral Anti-rotation Ribs

Pressure V


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Pressure V

Designed to ASME Section VIII pressure vess

PED or to customers specification Normally designed to maximum suction pre

Electrical S


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Electrical S

Proprietary dual seal cable feedthrus to meet US NEC, N

59A (two in series) and ATEX Explosion-proof or increased safety junction boxes

Conduit space between seals in the feedthrus for purginmonitoring

View of Electrical System for HP

Send-out pump

Cryogenic Power


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UL Listed Remains flexible at temperatures to -200C Tinned stranded copper conductor Layered PTFE Insulation Stainless steel armor braid for abrasion protection 600, 5000 & 8000 volts

Sizes from #4 AWG to 250 MCM

Cryogenic Power

Detail of Electrical Feedth


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Monitoring

Purge Ports

Purge Space

Conductors(Qty 3)

Seals

SST Flange

Detail of Electrical Feedth


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Monitoring

Heavy Duty Instrumentation S


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Heavy Duty Instrumentation S

In-Tank assemblies are completely armored

strain relieved 6 Pin hermetically sealed mil-spec feedthrus

solid locking connection

Shielding techniques ensure a noise free sig

throughout the system

Vibration Monitoring System


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g y

Condition Mo

Pumps installed in cryogenic liquid are diffic

determine to conditionespecially retractapumps

Cryogenic accelerometers developed over25 years

Suitable for use with BN 3300 & 3500 systems

Intrinsically Safe


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SUBMERGED LNG PUMP TYPES

Small scale lng pump types and applications

Submerged Motor Pump


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Submerged Motor Pump

Retractable (In-Tank) ECR

Suction Vessel Mounted ECC

Marine Cargo Handling EC

Aggressive Fluid ACR

Expanders LX & VX

Retractable (In-Tank


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Mod

Suction Vessel M


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Mod

Marine Fuel, Cargo, Spray, Emer


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Model EC

Cryogenic Ex


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Model L

Runners

Nozzle Vane

TEM RunnerTEM Thrust Plate

Generator StatorGenerator Rotor

One-Piece Solid Shaft

Bearing

Cryogenic Ex


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Model L

Aggressive Fluid


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Mo Magnetic Coupling

Sealed Grease filledbearings in dry side

Product lubricatedbearings in wet side

Motor in sealed, nitrogen

purged housing Materials comparable

with corrosive oraggressive chemicalapplications


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FROM ETO TO CTO

Improving delivery, cost and quality by minimizing design variat

Characteristics of TraditionE i t O d (ETO)


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Engineer-to-Order (ETO) p

Complex end products

Every new product order is at least 20% new Strong customer oriented production

Project based manufacturing (Program Mgt

Emphasis on customer service spare parts a

integrated product & process design (extremdocumentation standards)

Pre-Configured vs. Engineer-t


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Product Range Design P


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Coordinate the design of multiple design va

meet a variety of customer requirements Advantages

Design work minimized

Production possibly done in batches

Higher manufacturing and performance test qua Shorter Delivery Lead-Times

Hydraulic Range


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For any given pump type, there is a certain

coverage range to meet the market require E.g. Q= 3 to 200 H=50 to 200 m

For efficient cost of design, testing, patterns

manufacturing, spare parts and stocking, thshould be covered with the fewest pump sizpossible.

m3

hr

Induction Motor Range


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Results

2 pole random wound

V/Hz ratio = 380 V/118 HzLower power regions benefit from Wye

connection

Higher power regions require Delta

connection

Maximum efficiency: 87.7%

Maximum power factor: 90.9%

Implementation into production

6 lead motor, flexible Wye and Delta

connection

Y320 frame: 13.5

Stack Length: 13.0


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Design for Cryogenic Op


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Ambient criterion Press fit at ambient

Operating temperature

LNG: -165 C Differences in expansion coefficients cause

additional stress

Iterative fit calculation predicts stresses anddimensions at operating temperature

Parts sized such that Von Mises stresses are belowyield values listed in ASME Boiler and Pressure Vesselcode

Running clearances

Correspond to TEM analysis

Post assembly machining ensures runouttolerances are met.

Inducer used to prevent cavitation at impeller eye

d

Induc


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Inducer criterion

Flow = 1.8 x Rated Flow

Area ratio = 1.11.4

Inducer OD to inlet eye of impeller

Design criterion cannot be met with fixed geometry inducerFewest inducer variations

OD of inducer is trimmed to meet project requirements

Only 2 inducer designs for entire pump range

Con


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As small to mid-scale LNG projects ramp up

throughout the world, the need for short leaand low cost pumping equipment will increawell.

Without sacrificing quality or technologicaladvantages, Ebara International Corporatio

developed a new line of small to mid-scale pumps that meet the demanding delivery arequirements of this new market.


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QUESTIONS?

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