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  • HANSEL 22 inch CSD

Preparation before dredging construction

March 28th, 2022|

Before dredging, we should first carry out a soil survey and understand the local hydrological and meteorological conditions. And we should also apply the theory of dredging and mud transportation, which mainly includes the setting of reamer excavation parameters and the matching of key parameters of centrifugal pump, mud pump, [...]

  • cutter teeth 2

The dredging cutter teeth

March 14th, 2022|

The dredging cutter teeth, because of different dredging forms, can be divided into four categories: reamer cutter teeth, bucket-wheel cutter, knife flywheel cutter teeth, and environment-friendly cutter teeth. Among them, reamer cutter tooth and bucket wheel cutter tooth are the most common, while knife flywheel cutter tooth is more [...]

  • hansel cutter dredger

The significance of soil exploration in the dredging process

March 7th, 2022|

To choose proper dredgers and reasonably arrange the construction, it is necessary to confirm the soil quality and classify them, which is the main evidence of confirming production efficiency and calculating the cost. So, at the beginning of dredging, we should have a deep exploration of the soil. And the [...]

  • HANSEL 22 inch CSD 4

What is dredging?

February 22nd, 2022|

Dredging is referring to those engineering measures using dredger equipment to excavate those underwater soil and stones to increase the depth of water and remove the silt, which is a significant part of hydraulic engineering and transportation. Now it is used in constructing and maintaining the channel and port, land [...]

  • hign pressure flange connection
  • screw connection-2

Advantages and Characteristics of HANSEL Cutter Suction Dredger (Epi 1)

June 9th, 2020|

Hansel Marine is a leading Chinese manufacturer of Cutter Suction Dredger (CSD). Distinguished from some other Chinese manufacturers, HANSEL is a shipyard with rich experiences in building kinds of marine vessels, which makes HANSEL very familiar and adaptable to the shipbuilding standard, rules, and regulations. Cutter Suction Dredger characteristics and [...]

  • Construction combination of large and special projects

Construction combination of large and special projects

May 21st, 2020|

How to choose construction combination Large projects can be divided into several construction sections with different construction conditions, and they need both excavation and filling, according to the characteristics of the above construction composition, choose the appropriate combination of construction, such as approach channel select self-propelled trailing suction hopper dredger, [...]

  • Construction combination for the purpose of excavation

Construction combination for the purpose of excavation

May 9th, 2020|

1.Water depth of construction areas On navigable rivers, vessels frequent traffic, or there are large wind waves on the approach channel of the seaport and estuarine port. if the construction area has enough water depth, there are waters at both ends for the dredger to turn head and throw mud [...]

  • Bucket-wheel cutter
  • Bucket-wheel cutter-2

Cutting system——transformation of the cutter

April 28th, 2020|

The performance of cutter Cutter is a cutting tool for cutter suction dredger to cut underwater soil. Driven by the prime mover, it rotates to cut the soil layer and causes the soil layer separated by cutting to be deformed, broken, and mixed with water to form a slurry, which [...]

  • disassembly process of the wheel set-1
  • wheelset disassembly

Brief introduction of the disassembly process of the wheelset

April 20th, 2020|

At present, due to the increasing demand for dredging channels and building factories in the sea, large cutter suction dredgers are widely used in port construction and Marine development, playing a huge role. Cutter suction dredger is a kind of offshore construction equipment with a complex system and high technical [...]

Influence of flow rate and concentration on production efficiency

April 13th, 2020|

1.Flow rate The dredger is operated under certain working conditions, and its output flow is rated under normal conditions. In order to obtain maximum productivity, it is necessary to choose the optimal construction scheme and maximize the output flow while ensuring the normal operation of the dredge pump. Under the conditions [...]

  • Operation methods for different soils1
  • HS-55 CSDs operation

Operation methods for different soils

March 27th, 2020|

Excavation of hard clay: the water content of hard clay is low, high viscosity and hardness, and is not easy to collapse and excavation broken. It is difficult to excavate with bucket wheel head cutter, it is necessary to increase power to reduce the bucket wheel head speed, swing speed, [...]