Full-transparent dredging rake head testing device

Abstract

The invention discloses a full-transparent dredging drag head testing device which comprises a water pump, a water tank, a drag head structure and an observation system. The water pump is controlled by a variable frequency motor. The water tank comprises a structural frame, a transparent baffle, a non-transparent baffle and an operation platform. The drag head structure comprises a model drag head, a pressure measuring short pipe, a speed measuring window, a nozzle assembly, a lifting lug, a supporting part, an outlet and a suction port. The observation system comprises a tracing fluid director, a pressure measuring sensor and a tachymeter; by means of the device, complex coupling flow fields around the drag head and in the drag head can be observed, key conditions and performance parameters of the drag head can be measured, and therefore important data are provided for optimizing the structure of the drag head and the construction technology of the drag head.

Description

technical field [0001] The invention discloses a fully transparent dredging drag head test device, which belongs to the technical field of dredging. Background technique [0002] Trailing suction dredgers are efficient, flexible and strong against wind and waves, and have developed rapidly in the dredging industry. The rake head is the key equipment for the construction of the trailing suction dredger. It is the first contact with the sediment during the construction process, so the performance of the rake head is very important, especially the surrounding and internal flow field conditions, which directly determine the productivity of the whole ship . However, the dredging head has many components, many of which are irregular in structure but have a great impact on performance, resulting in extremely complex and changeable flow fields around and within the head. Multiple rows of nozzles are installed at the position, and the jets sprayed by the nozzles are coupled with th...

AI Technical Summary

Problems solved by technology

At present, the research on the dredging head mainly focuses on the numerical simulation of the flow field in the local parts, but the accuracy of the simulation is still in the stage of qualitative analysis, lack of accurate and effective test data inspection, and due to the complexity of the dredging head and its flow field , the flow field numerical simulation of the overall performance of the dredging head is very difficult, and the corresponding dredging head test device is urgently needed to provide platform support

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