CSD-250 Cutter Suction Dredger

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

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Supply Capability:: 10 unit/month

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General Introduction

u This cutter suction dredger is designed to operate in sheltered inshore waters and under tropical climate conditions. Build under enterprise standard with reference to ZC standard.

u She is of all welded steel construction ,bottom plate 8 mm thickness and shell plating 6 mm thickness, frame distance 500 mm, with 2 fixed spuds on the aft ,ladder support A frame in the front and 3 hydraulic operated winches ,2 double bollards(fwd and aft) and 1 single bollard in the center on each side.

u The whole dredger is dismountable in road transportable sections.

u The engines and dredge pump are located in the center pontoon, the 2 side pontoons serve as fuel bunkers, ballast tanks and store.

u Engine room and pump section are accessible by watertight hatches

u Cutter shaft runs on roller type bearings in an enclosed shaft housing flooded with lubrication oil a lock oil tank to ensure a positive pressure inside the bearing housing is located on top of the wheelhouse.

u The spacious control cabin is ergonomically designed fitted on a raised platform with all around non obstructed view ,2 operators consoles containing engine instrumentation and controls for winches, dredge pump, suction and discharge pressure gauges, navigation light controls, airconditioned and well insulated .

u Below the control cabin is a changing room located with table, chairs and washbasin

u The underwater section of the dredger is protected with a marine coating system and cathodic protection for use in a saltwater environment。

TECHNICAL SPECIFICATION CSD250
No.	Item	Description	Remark
1.	General Principle
	(1). Overall Length	26m
	(2). Side Pontoon Size	17m
	(3). Main Pontoon Size	11.0m
	(4). Breadth	5.2m
	(5). Moulded Depth	1.6m
	(6). Mean Draft	1.0m
	(7). Dredging Depth	10m
	(8). Pumping Distance	1000m
	(9). Pump Flow Capacity	1400m³/h
	(10).Suction Pipe Dia	350mm	Out Diameter
	(11) Discharge Pipe Dia	350mm	Out Diameter

2.	Main Pontoon
	(1). Dimension	11m2.2m1.6m
	(2). Bottom Plate Thick	10mm	CCSB marine plate
	(3). Side Wall Thick	8mm	CCSB marine plate
	(4). Front and Rear	14mm	CCSB marine plate

3.	Side Pontoon
	(1). Dimension	17m1.5m1.6m
	(2). Bottom Plate Thick	8mm
	(3). Side Wall Thick	6mm
	(4). Front and Rear Thick	6mm

4.	Main Engine		Drive dredger pump only
	(1). Make	weichai
	(2). Model	8170	Marine Engine. Cummins is optional
	(3). Power / rpm	601Kw @ 1500 rmp
	(4). Fuel Consumption	85L/h
	(5). Cooling Style	Water Cooling

6.	Axle Generator		Driven by auxiliary engine
	Make	STANFORD
	Power / rpm	24Kw

7.	Harbor Generator		Drive hydraulic pump & axle generator
	Make	WEICHAI +STANFORD
	Power / rpm	24Kw
	Fuel Consumption	4L/h
	Cooling Style	Air Cooling
	Output Voltage	220V/ 380V

8.	Dredge Pump
	Make	SHIJIAZHUANG
	Model	250G-G
	Suction Pipe Diameter	300mm
	Discharge Pipe Diameter	250mm
	Head	65m
	Rpm	650rpm
	Water Flow Capacity	1200m³/h

9.	Gearbox
	Model	L620
	Ratio	2 : 1

10.	Cutter
	Style	Hydraulic Motor+ Planetary Gearbox
	Cutter Power	60kw
	Crown Diameter	900mm
	Cutter Out Diameter	1000mm
	Blades	5pcs	High manganese alloy
	Cutter Teeth	33pcs	High manganese alloy
	Rpm	0-10-30rpm

11.	Ladder Winch		Hydraulic Drive
	Winch Motor Brand	XINHONG	Sino-Italy Joint Venture
	First Layer Pull	4 Ton
	Wire Rope Dia	18mm
	Wire Rope Capacity	120m
	Wire Speed	0-20m/min

12.	Swing Winch		Hydraulic Drive
	Winch Motor Brand	XINHONG	Sino-Italy Joint Venture
	First Layer Pull	4 Ton
	Wire Rope Dia	18mm
	Wire Rope Capacity	120m
	Wire Speed	0-20m/min
	Quantity	2 sets

14	Spud
	Length	13m
	Diameter	325mm
	Weight	2200Kg	Each

15	Spud Cylinder
	Cylinder Stroke	2.0m
	Cylinder Dia	140mm
	Working Pressure	16Mpa
	Travel Speed	0.2m/s

17.	Anchor
	(1). Type	HHP Anchor
	(2). Weight	300Kg

18.	Operation Cabin
	(1). Operation Board	Control all dredger movement commands and monitor equipments running condition. PLC system from SIMENS
	(2). Adjustable Chair	For dredger master. Leather.
	(3). A/ C	One set
	(4). Lounge	First floor cabin has space for two persons rest.

19.	Hydraulic System
	A. System Introduction	Hydraulic system is designed to supply power for winches, cutter, spud cylinder. Hydraulic pump separately is driven by engine free end.
	B. Hydraulic Motor	From Sino-Italy Joint Venture, YINING. Excellent working performance and durable usage life.
	C. Hydraulic Pump	NANJING

20.	Painting Principle
	Introduction	Do sand blasting before welding. Use good quality marine paint with greater thickness. Paint system is 3 or 4 layers with minimum thickness of 400 micron on the below water line area

19.	Electrical System
	Introduction	All electrical components are from famous brand as Omron and CHINT. Equip overload protection box to control safety. Use high quality electrical marine type cables (smoke and halogen free).
20.	Navigation Tool
	(1). Elec-mag Compass	Equipped
	(2). VHF-Radiotelephone	Equipped

Q:How much dredging can the 4000 side /h suction dredge dredge in one day? Soft silt: The pump in the cabin and the underwater pump are full load. The length of the pipeline is within 3 kilometers, and the depth is about -16 meters. According to the rate of 18 hours per day, the production rate is 61200 according to 3400.The actual amount should be between 45000 and 55000.

Q:The working principle of a trailing suction dredger: Loading trailing suction dredger, basically is a kind of from the seabed dredging ship, the dredging method and vacuum cleaners.

Q:3800m3 cutter suction dredger: Should be the hour efficiency of 3800 cubic meters, 3800 cubic meters of water or flow, I feel your problems are wrong, some 3800 type dredger, Holland IHC company, but refers to the total installed power. So I think it is type 3800, not 3800M3.

Q:Does dredging dredger need relevant qualification?: But if the local government regulations must be legitimate formal dredging project, estimated to need to apply for a ship's certificate, it is equivalent to a person's identity card! If you need Qingzhou Wynn mine, you can go through the whole process, the relevant costs to consult manufacturers.

Q:Who knows what's the name of the biggest dredger in China?: Guangzhou Waterway Bureau has the largest grab ship, the maximum bucket capacity of 50, but the efficiency is not as good as the Shanghai Waterway Bureau fighting capacity of Xinhai 27 party round clam.Most of the ships I've seen before, as well as a dredge called a chain bucket dredger, are now out of date.

Q:What are the crew members on the dredge?: The tonnage of dredger is large and small, and the dredging method is also divided into many kinds, so it can not be generalized.

Q:What is the working principle of a cutter suction dredger?: Adjust the transverse retractable cable winch, traverse speed and stop, to change the movement speed and cutting cutter position change in different sections. The mud pump is then pumped through the sludge line and the muddy water mixture is delivered to the designated blow in area. The cutter suction dredger by dredging machinery and equipment according to the design requirements of the excavation dredging area of rivers and lakes, and the dredged material through the mud pipeline transportation to dike back water side with fill; it is conducive to the expansion of cross-section, and it helps to prevent the foundation piping failure. It has been widely used in river and lake dredging works.

Q:Who has the construction plan of dredger dredger after dredger dredging and dredging with dredger barge?: Would dig into the mud barge, barge by suction dredger, using force pump suction dredger through pipelines on shore

Q:Classification of trailing suction dredgers for trailing suction dredger: Trailing suction dredger is one of suction suction type. It sucks in mud by raking the head of the two side of the ship's hull or at the tail to work with mud and side navigation. Is the use of mud rake scarification, boat design sediment tank, tank volume said the size of the ship. A single to rake or harrow, are arranged on the ship or on both sides. Suction dredger is flexible, high efficiency, strong wind waves, suitable for coastal ports, the wide river and ship anchorage operation in large waves and without the cover of coastal and estuarine areas, should choose the self-propelled trailing suction dredger. Soil works suitable for loosening and less than clay hardness. The self-propelled boat is equipped with a mobile power unit (paddle machine) to drive the dredger.

Q:The famous type of cutter suction dredger: The famous famous suction dredger is China's sky whale, (Tianjin River Navigation Bureau), sky Navigation Bureau, 5000kW and so on. At present, the world's largest is Luxemburg, Jan, De, Nul dredging group JDN8069.

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