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China, Chinese Double Draghead 5500m3 Tshd Vessel with CCS Class1 Industrial Products Supplier Manufacturer Details, price list catalog:
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DredgerTrailing Suction Hopper DredgerTrailing Hopper Suction Dredger
Shandong E-Touch Shipping Engineering Co., Ltd.
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Product Description Product Description A trailing suction hopper dredger (TSHD) is a type of ship capable of maintaining navigable waterways, deepening the maritime canals that are threatened to become silted, constructing new land elsewhere or replacing sand eroded by storms or wave action on the beaches. This is made possible by large, powerful pumps and engines able to suck sand, clay, silt and gravel.OperationPropertiesA trailing suction hopper dredger is self-loading/unloading and sometimes equipped with a pressurized discharging system.LoadingFrom the side of the ship one or two suction pipes descend to the bottom of the seabed. On the end of the pipe a so-called trailing drag head is connected. This head is comparable to a large vacuum cleaner and is trailed along the seabed. In the head there are nozzles connected to a high pressure water installation that are capable of loosening the material on the seabed. Due to lower pressure in the pipe, the material will be sucked inward and discharged in the hopper.The vessel should always have a positive speed over the ground. It is possible to regulate the density of the sucked substance. If the head is lowered, more material will be sucked but this risks damaging the installation because the material can get stuck inside the pipes. Once the mixture is loaded inside the hopper, the substance will sink and the water is discharged overboard, saving on storage space. A trailing suction hopper dredger can only suck relatively loose substance because the steel teeth are not so big. Harder substances such as rock or ironbased rock must be destroyed by a cutter.DischargingThere are several ways to discharge a TSHD. The most common way is dumping the material.Dumping - This is done by simply opening the doors that close the hopper. Once opened the substance will simply drop to the seabed because of gravity. The hopper will never be completely empty because there will always be some residue and water left inside.Pressing - High-pressure pumps will pump water inside the hopper to loosen or even liquefy the substance, which can then be pumped via long hoses over great distances (f.i. ashore)Rainbowing - This is the same principle as pressing, but instead of transporting the substance it will simply be blown away. This is often used to create land.Crane - It is always possible to discharge the load with a crane, but this will be a time-consuming process.EquipmentA trailing suction hopper dredger is equipped with the following equipment:One, or more, rearward extending suction pipesOne or more, Dredging pumps to create an under pressure in order to suck the substance into the hopperTransportation tubes to transport the substance from the pipes to the hopperAn overflow to discharge the redundant water overboardDegassing installation to extract any possible gas from the substance in order to reduce damage and increase fluencyDredge turning gland, allows a radial rotation in both directionsFunctionsA dredging vessel and particularly a TSHD is mostly used forMaintaining the depth of a harbor, canal or waterway.Constant delivery of sand for land reclamation or beach nourishment.TSHD Structure1. Draghead2. Suction Pipe3. Gantry4. Swell Compensator5. Onboard Pump6. Submerged Pump7. Onboard Hose8. Dredge Valve9. Onboard Pipeline10. Bottom Door11. Overflow12. Bow Coupling Detailed PhotosOur ShipyardAfter Sales ServiceSpare parts:*Support spare parts are in stock.*We provides a convenient way for you to order parts. You can simply select the parts you need according to your specs and have them delivered directly to your site.*Free spare part in the first year and later cost price and services.Installation and commissioning:*After delivery we send two experienced engineers who will be to guide installing and train local workers. 24/7 technical support standby. *We have offices and agents in some countries and are ready to provide you with solutions.Maintenance and Support:*12 months manufacturing warranty on all new installed component parts.*12 months warranty on engine.*12 months warranty on hull and all fabricated parts.*In the event that our customers dredging experience unskilled or mechanical failure or they just need to shoot a minor problem, HICL engineers are available at customer's services, all dredger from HICL, there are always engineers for installation and training if customers needs. Before dredger ex-factory, it will be tested at our launching site for performance and safety like in the work place.Training:*E-TOUCH Services offers training and expertise that can help you make sure all of you personnel are operating as safely as possible.*The products below will help you teach people at every level of your operation how to operate safely and how to communicate clearly, effectively and openly about any potential safety concerns.*As technology continues to enhance our world, HICL is constantly developing and refining advanced technologies. These products, along with the extensive training curriculum offered, provide everything you need to maximize the performance of your equipment, reduce costly downtime, increase your return on investment, improve safety in your workplace, enhance operator performance, and much more.Packaging & ShippingFAQDredger and Ship Building1, Material Purchase*Checking the Business License and Registration Certificate of Suppliers.*Using calipers to test the thickness of steel plate.*Using sclerometer to test the hardness of the steel plate.2, Pontoons Welding*Using welding failure detector to inspect the welding quality.3, Equipment Assembling*All the equipments on the dredger should be well-know brand including Cummins engine, Siemens PLC, Japan Yuken Hydraulic valve block.*Using three dial gauges to adjust the concentricity of engine, gearbox and pump.*All the electric lines are concealed wiring type.*All the Hydraulic pipes are pickled three times.4, Dredger Painting*All E-TOUCH Dredger construction parts are of shot blasted plate with shop primer. Dredger after construction and assembly all rusty surfaces, welding spots and damaged shop primer will be cleaned and coated with primer.*The painting of machine parts, readily supplied by third parties will be cleaned and touched -up in the original color. *Color scheme according to owner's specification.5, No-load Test* All the main equipment, including Engine, Gearbox, Pump, Hydraulic system.* Electric system, are tested for at least 2 hours in factory.*All the suppliers of the main parts should be on the spot to solve any problem.6, Dismounting and Packing*All the parts are marked before dismounting.*All the small parts are put into packaging box with a packing list.* All the hydraulic pumps and pipes joints are packed by plastic wrap.*Every part ( no matter how small ) is registered on the packing list.7, Delivery* All the big parts are fixed in the containers by wires ,* Before delivery, all the persons in charge should sign and make sure all the equipment are in good shape.Dredger Launching Site is Available in our ShipyardIn order to guarantee good performance and safety of our cutter suction dredger, all our products will be tested at the launching site before ex-factory, it is tested like the machine working in the customer's working site. Performance and safety will be tested and recorded in the testing process. Usually, the buyer can also supervised the testing process before dismantle the dredge.A. Preparing work before Dredger Testing1) Customers will be invited to watch dredger test , radio and pictures will email to buyers.2) Every parts and connections of dredger should be checked strictly before test.3) Oil and cooling water should be ready for dredger test.B. Dredger Test Contents1). Work condition of electricity connection of dredger should be checked .2). Emergency pump to check operation conditions of hydraulic controlling system,3). The speed and power of diesel engine should be tested4). Dredging pump will be tested and rotates at different speed with fresh water. 5). In order to check the operation of various hydraulic machinery and values, the main hydraulic pump will be opened and hydraulic system load performance should be tested.C. After Testing1). All equipment performances and testing recorded will be printed as report for customers' reference.2). after testing, all work about dredger dismantle should be prepared and let customer knows when and what time will do the delivery.
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