Dragflow high depth_dredging

Presentazione standard di PowerPoint

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.1The ultimate dredgingsolutions provider

ENVIRONMENTAL DREDGING AT HIGH DEPTHDAM DREDGING

Via Paesa, 46048 Roverbella (MN) Italywww.dragflow.it [email protected]

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.2Dredging Projects (1/2)Dredging is becoming a crucial activity for the development of our society. Some applications include:Maintain efficient harbor networksRestore a dams capacityOpen safe and efficient water-waysHowever, new challenges demand not only efficient dredging solutions but solutions that also assure environmental protection.


Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.3Dredging Projects (2/2)Dredging projects cause a high and complex environmental impact.

Sediments under water can be polluted by different materials:MetalsHydrocarbons Therefore, if the sediments are resuspended without any type of control we put in danger the surrounding flora and fauna.Bacteria Chemical substances


A sign along Ashland's downtown waterfront warns of the hazardous coal tar that has contaminated sediments3

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.4Dragflow PumpsOur advanced dredging systems achieve a high solid concentration while maintaining low turbidity levels during dredging operationsFor more than 25 years we have been focused on the manufacture of SUBMERSIBLE PUMPS with agitator blades, taking care of every possible detail in the functioning of these machines.Our pumps can reach solid concentrations up to 70%, increasing efficiency and minimizing operation costs


A sign along Ashland's downtown waterfront warns of the hazardous coal tar that has contaminated sediments4

Our TechnologyTuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.5Along the years, DRAGFLOW has become a respected and reliable name in the Dredging and Mining industries providing pumping solutions for clients working in specialized sectors and under extreme conditions.

Thanks to the experience in leading technology projects, Dragflow continuously enhances its ability to deliver high-quality products.WE ARE CERTIFIED

DRAGFLOW invested in ISO9001 QUALITY CERTIFICATION and in its information systems, because believes in the importance of business processes management, not only for improving efficiency but also to provide excellent service to Customers.


Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.6WHY SUBMERSIBLE PUMPS?EfficiencyThe presence of a double blade agitator directly at the pump suction enables DRAGFLOW pumps to pump slurries containing up to 70% solid concentration.

Higher solid concentrations means using the energy to move solids instead of water.

This translates into:Smaller Diesel enginesSmaller discharge pipesLower environmental impactReduced operating costsSmaller machinesHigher solid production


Intro with challenge for dredge equipment manufacturers (develop efficient machines, reduce fuel emissions, minimize project operating costs and maximize solid production)

6

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.7WHY SUBMERSIBLE PUMPS?VersatilityDue to the own weight of the pump, it can be lowered into the water using a winch with a steel cable. This allows Dragflow pumps with no limitations on working depth. At Dragflow we also introduced an innovative double cutting system in which cutter heads turn in opposite directions cancelling the torsion as the pump is suspended from a single cable.


7

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.8Environmental Dam CleaningAnti-Turbidity BellA few consequences of turbidity when dredging at dams could be:Damage to Hydroelectric turbines due to fine solids in suspensionContamination of potable water sourcesDragflows anti turbidity bell limits the turbidity deriving from the dredging process to a circumscribed area. Therefore, the disturbance of the aquatic environment is kept at an absolute minimum.


8

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.9Other High Depth SystemsPump and CuttersDragflow has developed a line of hydraulic and electric pumps for high depth applications.

These pumps are equipped with a pressure compensation system based on a hydraulic accumulator that equals the pressure inside the seal chamber to the elevated external water pressure.A second hydraulic system mounted on the pump and cutter motors prevents abrupt interruptions of oil flow, protecting the motors and internal components.


9

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.10Other High Depth SystemsHigh Depth Jet-Ring SystemFor additional cutting power, Dragflow pumps can be equipped with a compensated high pressure water Jet-Ring system.The system is composed by two main elements:

Jet Ring Frame around the pump suction

Horizontal centrifugal water pump to supply the high pressure water


10

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.11UmbilicalsWhen working with several long oil hoses, it is advised to use a umbilical to achieve a better control and a much more organized workplace. The umbilical groups all the oil hoses going to the pump inside a single tube that can be easily handled.

When working at high depths, it is also advised to use a spooler to manage the oil hoses. The spooler is responsible for supplying and recovering the oil hoses as the pump goes up and down.

SpoolersOther High Depth Systems


11

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.12Power PacksDRAGFLOW variable flow Hydraulic Power Packs are engineered for use with the DRAGFLOW hydraulic pumps, which coupled with hydraulic excavators make up a complete dredging plant.

Operator CabinSound proof canopyRemote/Radio controlRadio/Radio controlContainer constructionFor low temperature (-40C)[OptionsOther High Depth SystemsFor High Depth applications, our Power Packs have:Separate hydraulic circuits for pump and cuttersAssisted descent of pumpOil boosters and oil compensatorsSound Proof CanopyWireless remote control for safety purposes


12

Tuesday, June 09, 2015 Dragflow 2015. All Rights Reserved.13

High Depth ReferencesDirillo Dam dredging (60m working depth)Sicily, Italy 2006Project Description: Removing alluvial sediments accumulated in the lake near the dam bottom spillway.Dragflow Product: Diesel driven dredge with Hydraulic Pump HY300B and Hydraulic Cutters EXHY35, everything compensated for maximum working depth of 60 mts.Average Production: 300 m3/h of solid material at 1.000 m of discharge distance.


13


High Depth ReferencesOffshore project (120m working depth)Azerbaijan 2007Project Description: Removing sand and silt around the jacket of an off shore platform for petroleum extraction from the bottom of the sea. Dragflow Product: Hydraulic Pump HY50B plus cutters EXHY20 with Hydraulic Spooler, Umbilical and protective off-shore frame. Average Production: 60 m3/h of solid material at 200m of discharge distance at sea bed level.


14


High Depth ReferencesOffshore dredging (270m working depth)Russia 2012Project Description: Trench dredging in Deep Ocean. Vessel equipped with dynamic positioning and ROV system able to detect position of the pump. Dragflow Product: Dredge HY85B with cutters EXHY20S with Hydraulic Spooler, Umbilical and protective off-shore frame. Average Production: 100 m3/h of solid material at 270m working depth.


15


High Depth ReferencesOffshore pipeline maintenance Caspian Sea 2015Project Description: Special dredging system allowing sand removing along submerged pipeline.Dragflow Product: Two Dragflow HY85/180HC High capacity with cutters EXHY20 attached to a steel frame with a protective shield.Average Production: sand 400 m3/h at 200 m distance from the pipeline.


16


Thank you for your attentionFollow us in social media:


Dragflow high depth_dredging

Engineering

Transcript of Dragflow high depth_dredging