Parker boosts productivity of bulk carrier fleet
A
Parker Hannifin - Parker Sales UK product story
Edited by the Engineeringtalk editorial team
Jan 19, 2009
Parker Hannifin has worked together with EMS-Tech to help develop an integrated unloading system for a fleet of forebody vessels.
'Our client, CSL International, was looking to complete a huge fleet renewal programme of its self unloaders,' said John Elder, vice president, marine systems at EMS-Tech.
Conveyor and boom systems offer an efficient method of unloading materials from a bulk carrier.
'As well as requiring a reliable unloading system that would enable them to optimise productivity levels, CSL needed to carry out the project in the shortest time and at the minimum cost.
'To do this, it was decided that the aft end of existing single skin tankers would be combined with new forebodies comprising integrated self-unloading systems.' When it came to the design and supply of the boom slew system, EMS-Tech turned to Parker.
When designing the actuator for this application, Parker had to consider a wide range of system parameters, including the operating environment, slewing speed, and duty cycle, in addition to factors such as the ship list angle and wind load on the boom.
In addition to providing the torque required to slew the discharge boom, the actuator serves to support this very large boom structure and all imposed loads, which can be well in excess of 500 tonnes.
The Parker solution took the form of a 25 tonne rack-and-pinion hydraulic rotary actuator, coated with a rubberised epoxy paint at 175 micron dry film thickness to protect the system from corrosion in the hostile working environment.
The purpose-built system is able to control the boom accurately, providing 4.3 million Nm of holding torque and 3.5 million Nm of slewing torque at 275 bar.
The finished system is capable of discharging a variety of materials, including coal, stone, grain, ore, alumina, and limestone rocks at a rate of 5,000 tonnes per hour.
The actuator features a pinion gear bore that fits over a king pin tied into the structure of the ship.
The gear is fixed so that the housing rotates as pressure is applied to the cylinders, causing the actuator to turn at 12 per minute.
To give an idea of the scale of the cylinders, approximately 450 litres of oil are displaced for every 190 of rotation.
The boom is attached to the actuator by two trunnion pins that project from the sides of the actuator housing.
These trunnion pins carry the weight of the boom, in addition to transferring the torque from the actuator into the boom to rotate it off the centreline of the ship and into the required position.
The actuator is then able to hold the boom steadily against the torque generated by the list of the ship, as well as the wind loads trying to rotate the boom further.
A separate luffing cylinder and a rigid luffing linkage assembly are used to control the boom vertically.
This arrangement allows the boom to be positioned along the centreline of the vessel in a storage saddle when it is not in use, and, likewise, to be lifted out of the storage position when it is required.
With the bespoke rotary actuator assembled and connected to a purpose built hydraulic power unit, complete with directional valves, holding valves, and filtration equipment, Parker was able to help EMS-Tech meet its client's requirements quickly and cost effectively.
Not what you're looking for? Search the site.
Contact Parker Hannifin - Parker Sales UK
Tel (00800 27 27 5374)
Other Parker Hannifin - Parker Sales UK stories
-
Parker offers electrical coils for Lucifer valves
Parker Hannifin has launched ATEX-certified 37mm electrical coils for use on its Lucifer range of stainless-steel solenoid valves and the brass and aluminium X valves. -
Marine fuel polishing system for smaller vessels
The Racor division of Parker Hannifin has introduced an ultra-low power marine fuel polishing system for use in smaller commercial and pleasure vessels. -
Parker announces Par<>Fit filter elements
Parker Hannifin has announced a range of competitively priced Parker quality replacement filter elements. -
MPB's biodiesel tractors use filtration technology
Philip and Michael Bates of MPB Bioproducts are using filtration technology from Parker to run one of the tractors on their farm using 100 per cent biodiesel produced by their own crop. -
F11-iP motor maintains 40m/s optimum cutting speed
Parker Hannifin, the provider of motion and control technologies, has developed a hydraulic saw motor that automatically maintains an optimum cutting speed of 40m/s for 35 per cent faster cutting.
Browse by category
-
Capital Equipment (3,420)
- Capital Equipment (1)
- Compressors and Air Treatment (518)
- Electrical hardware (131)
- Electronics Manufacturing, Tools, Instruments (192)
- Machinery and Production Equipment (1,106)
- Manufacturing Machinery and Plant Equipment (468)
- Production line blowers and fans (64)
- Robotics, Handling and Storage (940)
- Consultancy and Services (909)
-
Control and Instrumentation (5,064)
- Cabling, Conduit, Signal Conditioning (807)
- CNC and Motion Controllers (187)
- Control and Instrumentation (2)
- HMIs/Operator Interfaces (295)
- Logic Controllers, Timers and Relays (96)
- Mid-range and Large PLCs (202)
- Plant- and Machine-Wide Communications (1,183)
- Plantwide control (1,335)
- Power Supplies, Uninterruptible Power (569)
- Smaller-Sized PLCs (388)
-
Drives, Motors and Controls (3,393)
- Drives, Motors and Controls (1)
- Industrial Drives/Controls (1,283)
- Industrial Motors (500)
- Linear Drives and Motors (115)
- Precision Motors and Gears (418)
- Stepper and Servo Drives, Motors, Controls (1,074)
-
Electrical and Electronic Equipment Design (4,203)
- Batteries, chargers and circuit protection (558)
- Connectors, Terminals, Busbars, Slip Rings (691)
- Electrical and Electronic Components (635)
- Electrical and Electronic Equipment Design (1)
- Electrical and Electronic Subassemblies (371)
- Enclosures and Equipment Cooling Fans (712)
- Knobs, Handles and Enclosure Hardware (425)
- PCs and Embedded Systems (810)
-
Engineering Design Software (6,226)
- 2D CAD software (201)
- 3D CAD software (1,162)
- CAM, CNC, production management software (571)
- Data, document management software (313)
- Electrical design software (165)
- Engineering Design Software (15)
- FEA and structural analysis software (374)
- File conversion software, data capture (355)
- Fluid, thermal, noise, vibration software (334)
- Materials design and moulding design software (152)
- Maths, charting, statistics, QA software (318)
- PLM and collaboration software (652)
- Process, instrumentation, automation software (260)
- Publishing and documentation software (230)
- Rendering, visualisation, styling software (200)
- Simulation, modelling, validation software (924)
-
Engineering Industry News, Resources (6,125)
- Electronic Resources for Engineers (278)
- Engineering Business News, Views (388)
- Engineering Conferences (430)
- Engineering Education, Resources, Standards (844)
- Engineering Exhibitions, Events (566)
- Engineering Guides, Newsletters (353)
- Engineering Industry Developments, Awards (635)
- Engineering Industry News, Resources (4)
- Engineering Industry Reports, Surveys (597)
- Engineering Recruitment, Employment (219)
- Engineering Seminars (402)
- Engineering Training Courses (440)
- Health and Safety Consultancy, Software (175)
- Health and Safety Events, Training, News (278)
- Health and Safety Legislation (402)
- Health and Safety Strategy, Risk Assessment (114)
- Machine Building (4,563)
-
Materials and Processing (2,986)
- Materials and components (2,233)
- Materials and Processing (5)
- Materials processing and testing (288)
- Rapid Prototyping (460)
-
Monitoring, Measurement and Quality (5,524)
- Data Acquisition Hardware and PC I/O Boards (479)
- Data acquisition Software and Communications (497)
- Data loggers (421)
- Electrical and Electronic Testing, PAT Equipment (635)
- Form/co-ordinate, optical, vision instruments (729)
- Gauges, Indicators and Instruments (444)
- Materials testing equipment (420)
- Monitoring, Measurement and Quality (1)
- Telecomms/network test equipment, software etc (156)
- Testing and Calibration Services and Information (508)
- Testing, analysing and monitoring equipment (1,234)
-
Powertrain Design (3,646)
- Bearings (956)
- Chains and belts (329)
- Gears, brakes, couplings and engines (1,455)
- Hydraulic Components (473)
- Lubricants (430)
- Powertrain Design (2)
-
Sensors (7,141)
- Accelerometers and Vibration Sensors (432)
- Barcode Sensors (103)
- Flowmeters and Flow Sensors (621)
- Gas, Chemical, Radiation, Magnetic Sensors (286)
- Humidity and Environmental Sensors (155)
- Level Sensors and Leak Detectors (529)
- Linear Position Sensors (408)
- Loadcells, Force Sensors, Torque Sensors (710)
- Pressure sensors (625)
- Proximity Sensors (708)
- Rotary Position, Tilt and Angular Sensors (551)
- Sensors (8)
- Temperature sensors (613)
- Vision and Colour Sensors (1,392)
- Small Mechanical Components, Joining, Tools (1,987)
- Valves, Pumps, Process Hardware (3,652)
