Common dredging difficulties
Difficulty in dredging hard plastic soil For non-inertia grab, the construction efficiency of hard plastic soil is not reduced to a great extent, But for the cutter suction, bucket wheel and inertia grab dredger, excavation and transport capacity is obviously insufficient. Pipe blockage often occurs in the construction of cutter suction dredger [...]
Study on wear of dredging equipment
1.1Wear of dredging equipment pipeline： Wear is closely related to the movement of soil particles, especially the falling speed of soil particles in pipelines. Therefore, it is necessary to study the wear of dredger, pipe and mud pump, analyze the impact of wear on production, and study the methods of controlling wear. There [...]
Effect of mud mass concentration on the working conditions of dredger’s mud pump
The cutter suction dredger plays an important role in the construction of channel dredging and sea reclamation. Dredger's mud pump as the core component of cutter suction dredger, its high efficiency, the stable operation directly affect the work efficiency of the whole ship and dredging costs, but in the process [...]
Long-distance transmission process of series boost pump boat with cutter suction dredger
The cutter suction dredger and the boost pump boat work in series. The determination of the position of the boost pump boat is the key factor to improve the production efficiency.Under the long discharge distance, Using boost pump for conveying system pressurization to achieve the desired transfer effect when the inherent head of the single ship is not enough to [...]
How to deal with clay soil with calcareous nodules by CSD
The clayey soil containing calcareous nodules has unique characteristics of pipeline hydraulic transportation. In order to avoid pipeline blockage, effective engineering and technical measures can be adopted by CSD. 1) When using high-concentration mud pipeline transportation, the difference of dredged soil quality should be fully taken into account, and relevant [...]
Design and manufacture of spud system
The spud system is one of the main equipment of the cutter suction dredger. It will guarantee the accurate positioning of the dredger operation, by working together with the swing winch and anchor rope system to ensure the dredging operation is carried out along a certain track. There are two [...]
Types and selection of winch
There are two types of winch for modern cutter suction dredger, electric drive type, and hydraulic drive type. The hydraulic drive winch has two types, open-gear transmission hydraulic winch, and the planetary reducer hydraulic winch. Traditional electric drive winches are mostly parallel shaft reducers and open-gear transmissions. In recent years, [...]
Factory Acceptance Testing of Cutter Teeth
Recently, Hansel QC engineers carried out the factory acceptance testing of Cutter Teeth for our CSD newbuilding project. Hansel has established a full set of quality control system covering each procedure of our product, including the selection of material, process optimization, production inspection, acceptance testing, after-sales service, etc. The [...]
Cutting process of non-clay soil and clay soil
Before cutting soil , we have to distinguish the difference between clay soil and non-clay soil: the way of breaking is different and requires a lot of practical experience. Clay soil: It has adsorption force and must be cut loose, cut pieces cannot be too large. can increase the [...]
Positioning and anchoring should meet the following requirements
When using spuds construction, after the dredger is towed to the starting point of the channeling, the tug-boat should be decelerated and stopped. After the ship's speed is eliminated, put down the spuds and set the transverse anchor. It is strictly forbidden to put down the spuds while moving the [...]