The Next Generation Green for Maritime Water Hydraulics Customer - - PowerPoint PPT Presentation

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The Next Generation Green for Maritime Water Hydraulics Customer - - PowerPoint PPT Presentation

Feb 03, 2023 226 likes •630 views

The Next Generation Green for Maritime Water Hydraulics Customer Focused Quality Driven Global Reach Why Water Hydraulics? Water hydraulics can accomplish the same work as traditional systems, 1 without worrying about the

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SLIDE 1

The Next Generation ‘Green’

for

Maritime Water Hydraulics

Customer Focused – Quality Driven – Global Reach

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SLIDE 2

Why Water Hydraulics?

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Water hydraulics can accomplish the same work as traditional systems, without worrying about the environmental impacts associated with oil based systems. Water hydraulics is a very efficient way to transmit fluid power; water is incompressible with no energy loss attributable to fluid compression. Water hydraulics is naturally fire resistant; please note that advertised ‘fire resistant fluid’ can ignite when atomized under pressure. The key is that

Customer Focused – Quality Driven – Global Reach

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resistant fluid’ can ignite when atomized under pressure. The key is that water is truly ‘Non Flammable’. Water hydraulics can be used even in below freezing applications; environmentally safe additives can significantly lower the freezing point. Water hydraulics is proven technology and is being used extensively throughout many industries today such as steel, aluminum, mining, medical, food processing…and the list continues to grow.

E3 = Economical x Eco-Friendly x Efficient

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SLIDE 3

Customer Focused – Quality Driven – Global Reach

BOC Water Hydraulics Inc. 12024 Salem-Warren Rd. P.O. Box 1028 Salem, Ohio 44460, USA Phone: +1 330.332.4444 Fax: +1 330.332.1650 www.bocwaterhydraulics.com www.facebook.com/bocwaterhydraulics

BOC Water Hydraulics, Inc.

Presentation to The Society of Naval Architects & Marine Engineers

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SLIDE 4

Contents

  • Current Water Hydraulic Applications
  • Water versus Oil Hydraulics
  • Cartridge Valves

Customer Focused – Quality Driven – Global Reach

  • Fluid Considerations
  • Marine Based Applications
  • USACE Dredge MURDEN
  • Other Marine Applications
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SLIDE 5

Applications today are Headed Towards Water

  • Water Hydraulics are used today in:

– Steel industry (Descaling & DC) – Aluminum (Directional Control) – Refining (Coke Drum Cutting)

Water Is Used in Many Applications Today

Fire

Customer Focused – Quality Driven – Global Reach

– Refining (Coke Drum Cutting) – Mining (Roof Support – Process) – Food Processing (Avoid contamination) – And many more . . .

  • Where are Water Hydraulics applications heading:

– Dredging (2012) – Navigation (2015) – Other Shipboard Systems

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SLIDE 6

Steel (Descaling)

Range of Water Systems

Flow 1000

Oil & Gas (Decoking)

From low to high pressure; low to high flow

The higher the pressure, the smaller the components ‘typically’

Customer Focused – Quality Driven – Global Reach

Steel (DCV)

Pressure (PSI) Flow (GPM) 3000 1000 5000 10000 > 10000 5 10 100

Pipe Mills (Hydrotesting) General Industry (Water Cutting) Food Industry (Handling)

Dredging/ Marine

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SLIDE 7

Technical Considerations

  • Design Approach
  • Practical Realities

Customer Focused – Quality Driven – Global Reach

  • Physics
  • Economic Impact

Zero Leakage – Environmentally Friendly – Higher Efficiency – Lower Total Cost of Ownership

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SLIDE 8

Technical Considerations

  • Design Approach – Typically lapped

spool type designs; Internal Leakage is part of design; rely on

  • Design Approach – Zero Leakage.

Internal leakage damages base materials; water is a cutting agent at

Oil Hydraulics Water Hydraulics

Customer Focused – Quality Driven – Global Reach

internal leakage for lubrication high pressure and velocity. Avoidance of internal leakage is key to success

Zero Leakage – Environmentally Friendly – Higher Efficiency – Lower Total Cost of Ownership

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SLIDE 9

Technical Considerations

  • Practical Realities – Plunger floats;

minimal metal to metal contact, no requirement for high strength/anti-

  • Practical Realities – Given zero

leak requirement, most valves use ‘soft’ packed seals; lack of lubricity

Oil Hydraulics Water Hydraulics

Customer Focused – Quality Driven – Global Reach

corrosive materials and difficult application environment

  • ften requires high strength, more

exotic materials such as stainless

Zero Leakage – Environmentally Friendly – Higher Efficiency – Lower Total Cost of Ownership

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SLIDE 10

OPEN POSITION OPEN POSITION CLOSED POSITION CLOSED POSITION

OUT OUT

SEAL VENT

Customer Focused – Quality Driven – Global Reach

Area 2 > Area 1

  • System pressure is applied to top of

poppet to close valve.

  • Pressure acting on larger area, (A2),

closes the valve.

PILOT PRESSURE PILOT DRAIN

  • System pressure is vented out of top of

poppet.

  • Pressure acting on bottom of poppet,

A1, opens the valve.

IN IN IN IN OUT OUT

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SLIDE 11

CARTRIDGE STYLE CARTRIDGE STYLE DIRECTIONAL DIRECTIONAL CONTROL VALVES CONTROL VALVES

  • IDEAL FOR WATER SYSTEMS
  • ZERO INTERNAL LEAKAGE
  • FLEXIBLE ACTIONS

PILOT SECTION:

  • CONTROLS OPENING AND CLOSING

OF CARTRIDGES IN CORRECT SEQUENCE.

  • MANY VARIATIONS AVAILABLE FROM

SOLENOID OPERATED TO LEVER OPERATED.

Customer Focused – Quality Driven – Global Reach

4 COMMON IDENTICAL CARTRIDGES

4 WAY VALVE 4 WAY VALVE

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SLIDE 12

CARTRIDGE FEATURES CARTRIDGE FEATURES

Slot for fast and easy cartridge removal during maintenance. Dynamic seals do not cross ports during valve shift resulting in long valve life and less maintenance. Threaded hole to support special functions (spring support, hand wheel installation, etc.) Commonality of parts reduces on hand spares inventory. Hex socket for fast, easy removal and torqueing. DIN 80 and up use multiple torque screws.

Customer Focused – Quality Driven – Global Reach

Removable, reversible seat with range of material options (hard and soft) for drop tight sealing – double seal life reducing maintenance costs. Single piece hardened stainless steel sleeve with graduated slots to minimize hydraulic

  • shock. Long component life and less downtime

and system maintenance. torque screws.

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SLIDE 13

Example: F14 Action Example: F14 Action – 3 Position, 4 Way Valve 3 Position, 4 Way Valve

SIMPLIFIED SCHEMATIC DETAILED SCHEMATIC

Customer Focused – Quality Driven – Global Reach

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SLIDE 14

Technical Considerations

  • Physics – Oil allows for higher

pressure drops and higher velocities, creating smaller components, but at

  • Physics – Water does not compress,

makes it more efficient to pump; zero leakage makes it more energy

Oil Hydraulics Water Hydraulics

Customer Focused – Quality Driven – Global Reach

a price of energy loss efficient; lower velocities translate to larger valves.

Zero Leakage – Environmentally Friendly – Higher Efficiency – Lower Total Cost of Ownership

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SLIDE 15

Technical Considerations

  • Economic Impact – Manufactured

in volume, price points relatively low given large market size (several

  • Economic Impact – Manufactured in

low quantity, price points higher, much smaller market ($100 M)

Oil Hydraulics Water Hydraulics

Customer Focused – Quality Driven – Global Reach

$Billion per year)

Zero Leakage – Environmentally Friendly – Higher Efficiency – Lower Total Cost of Ownership

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SLIDE 16

Initial Cost Water Hydraulics vs Oil Hydraulics

Customer Focused – Quality Driven – Global Reach

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SLIDE 17

Fluid Cost Water Hydraulics vs Oil Hydraulics

Description Tank Volume EAL Cost WH Cost Reservoir 350 Gal $13,300 $350 Storage Tank 2000 Gal $76,000 $0 Fluid Makeup $38/Gal $1/gal

Customer Focused – Quality Driven – Global Reach

Fluid Makeup $38/Gal $1/gal Fluid Contamination 350 Gal $13,300 $350 Notes:

  • Water Hydraulics is filled directly from potable water system.
  • No clean up cost or fines associated with Water Hydraulics.
  • No storage, handling, or disposal costs for Water Hydraulics.
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SLIDE 18

Fluids Considerations

  • Basic Design – Media is ‘tap water.’ De-ionized or distilled water is not a
  • requirement. Most products designed to work on ‘river water.’

At the extreme – some systems could be designed to work with seawater

  • Other Low Viscous Fluids – Several low viscous fluids are used

throughout industry for special process considerations (aluminum mills

Customer Focused – Quality Driven – Global Reach

throughout industry for special process considerations (aluminum mills use kerosene based fluids to prevent from marking the end product); all require a zero leak design approach

  • Cleanliness – Some reasonable level of cleanliness (100 microns or

better)

  • Additives – In some applications glycols are added to increase lubricity
  • r to prevent fluid contamination
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SLIDE 19

Fluid Additives

  • Purpose - Additives aid the use of water as a hydraulic fluid. Water is

limited in its ability to lubricate (low viscosity). It also can be a media for growth of biological agents. Unfortunately, it does freeze at a relatively high temp.

  • Corrosion Control – Synthetic additives bond to the internals of the system

Additives Serve Many Purposes

Customer Focused – Quality Driven – Global Reach

  • Corrosion Control – Synthetic additives bond to the internals of the system

and prohibit or slow corrosion

  • Algae Control – Algaecides mix with the fluid and prevent growth of

biologics which can degrade system performance

  • Lubricity Assistance – Other additives are design to add lubricity to the fluid

making it slippery and enhancing life of components

  • Freezing Control - Additives such as Propylene glycol (FDA approved food

additive) lower the freezing temperature of the water

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SLIDE 20

Freeze Prevention

  • 10
  • 5

10 20 30 40 50 60

Increasing Propylene Glycol % of Solution Lowers Freezing Point

Propylene Glycol Solution (%) Note: Increasing Propylene Solution level also acts to raise the boiling point from 100 deg C with no additive to 107 deg C with 60%

  • additive. However fluid

Customer Focused – Quality Driven – Global Reach

  • 50
  • 45
  • 40
  • 35
  • 30
  • 25
  • 20
  • 15

Freezing Point (Deg C)

Freezing Point (Degrees C)

  • additive. However fluid

temperatures should be well below this point, preferably less than 65 deg C at all times.

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SLIDE 21

Examples of Fluid Additives

Many Commercially Available Options . . .

Product Information MSDS

Customer Focused – Quality Driven – Global Reach

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SLIDE 22

Examples of Fluid Additives

Many Commercially Available Options . . .

Pre-inhibited products contain additional corrosion inhibitors to help prevent acidic corrosion of metal

  • components. Furthermore, some manufacturers

include agents to prevent biological fouling and bacterial slime growth in the water.

Customer Focused – Quality Driven – Global Reach

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SLIDE 23

Fire Hazard and Storage Considerations

Customer Focused – Quality Driven – Global Reach

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SLIDE 24

Limitations of Water Hydraulics

  • Limited Component Supply Options - Fewer component level supply
  • ptions for pumps, valves, and cylinders. Large hydraulic

components suppliers have been slow to embrace water applications given relative low volumes compared with oil systems

  • Limited Breadth of Servo Control Options for Precision Applications –

Considerations

Customer Focused – Quality Driven – Global Reach

  • Limited Breadth of Servo Control Options for Precision Applications –

Most major control system advances have originated in the oil hydraulics world where Research and Development budgets are much larger

  • Limited Rotary Actuators – Large rotary actuator currently under

development

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SLIDE 25

Maintenance Considerations Water vs Oil Hydraulics

Oil Hydraulics Water Hydraulics Pumps Typically non-repairable; wear out due to metal- metal contact and breakdown of fluid over time Typically rebuildable/repairable; tighter tolerances during manufacture, high end materials of construction

Customer Focused – Quality Driven – Global Reach

Valves Typically non repairable and replace with new Tend to use packed configurations with limited metal on metal contact; typically can be repacked and re-used Fluid Conditioning Focus is on oil quality and cleanliness; fluid breakdown with time, heat, water content Focus is on water quality and cleanliness; bacterial contamination, cleanliness, freeze point Cylinders Cylinder maintenance differences are negligible between water and oil systems. Typically side load

  • n rod tends wear thorough plating, ruins seals; not a function of fluid
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SLIDE 26

US Army Corps of Engineers (USACE) Dredge MURDEN

Customer Focused – Quality Driven – Global Reach

First Water Hydraulic System on a US Coast Guard Certified Dredge

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SLIDE 27

Filling the Hopper

Customer Focused – Quality Driven – Global Reach

View Video

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SLIDE 28

Emptying the Hoppers

Customer Focused – Quality Driven – Global Reach

View Video

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SLIDE 29

Dredge Hull Cylinders

  • 406 mm (16 in) bore
  • 178 mm (7 in) diameter rod
  • 2184 mm (86 in) stroke.

Customer Focused – Quality Driven – Global Reach

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SLIDE 30

MURDEN’s Water Hydraulic Schematic

Customer Focused – Quality Driven – Global Reach

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SLIDE 31

Fore and Aft Hull Cylinders and Latches

Customer Focused – Quality Driven – Global Reach

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SLIDE 32

Hull Cylinders - Closed

  • Customer Focused – Quality Driven – Global Reach
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SLIDE 33

Hull Cylinders - Open

  • Customer Focused – Quality Driven – Global Reach
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SLIDE 34

BOC Cartridge Valves & Reservoir

Customer Focused – Quality Driven – Global Reach

Aft Hull DCV Aft Latch DCV Fore Hull DCV Fore Latch DCV

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SLIDE 35

Triplex Plunger Pumps

Customer Focused – Quality Driven – Global Reach

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SLIDE 36

Dredging Consoles

Customer Focused – Quality Driven – Global Reach

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SLIDE 37

Other Applications

  • All Marine
  • Steering Systems
  • Valve Operators
  • Jib and Boom Cranes
  • Elevators
  • Dredging

Customer Focused – Quality Driven – Global Reach

  • Dredging
  • Hopper Doors
  • Dragarm Davits
  • Draghead Visors
  • Overflow Weir Cylinders
  • Spud Hoists
  • Spud Carriage
  • Other Environmentally Sensitive Applications

VOSTA LMG Draghead

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SLIDE 38

The BOC Team

Customer Focused – Quality Driven – Global Reach

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SLIDE 39

DISCUSSIONS/QUESTIONS

Contact Information:

Customer Focused – Quality Driven – Global Reach

Vinton Bossert (302) 740-1841 vintonbossert@comcast.net