| The disasters of Enteromorpha prolifera occurred frequently in the last ten years,and the trend was aggravated year by year.However,the existing enteromorpha disaster control devices have some problems,such as incomplete function and low efficiency.According to the characteristics of coastal waters,a multifunctional enteromorpha fishing integration device is designed in this paper.The device is simple in structure,easy to operate and maintain,low in cost and high in efficiency.It can realize the continuous operation of enteromorpha fishing,compression dehydration,packaging and other processes.It is suitable for the fishing work of enteromorpha in offshore waters.According to the modern mechanical design methodology,the parts of the hull,fishing device,transmission device,compression dehydration device,packaging device and other components for structural design,and the main components for calculation and selection,the use of three-dimensional software will be assembled into a complete multifunctional entermorpha fishing integration device,At the same time complete with enteromorpha accumulation,transmission,compression dehydration function of the physical prototype production.The static simulation of the ship structure is carried out to ensure that it can meet the design requirements of operation in sea wave environment.In order to avoid the phenomenon of hull resonance and ensure that the hull structure can withstand the influence of sea wave with the maneuvering load,the dynamics simulation of the hull structure is carried out in this paper to ensure the stability and safety of the whole device in the sea operation.The use of aggregative spirochetes in the salvage device can effectively improve the impact resistance of the salvage device and enhance its wind and wave resistance.Under the premise of meeting the safety requirements,the multi-objective optimization design of the main parameters of the aggregative spirochaeta in the fishing device can not only effectively reduce the mass of the aggregative spirochaeta,improve its structural strength and stiffness,but also reduce the consumption of materials,reduce the dead weight of the fishing device,so as to improve the stability of the hull and make the overall design more reasonable.Aiming at the problems of strong vibration and large noise during operation of Entermorpha compression dewatering device,a mathematical model is established by taking the minimum value of the maximum pressure Angle of the working mechanism of the device as the objective function.A simplified prototype model of entermorpha compression dewatering device is established according to the design parameters,and the parameters are set up and the constraints and drives are imposed.Its optimization significance can not only reduce the vibration and working noise of the machine,prolong its service life,but also improve its transmission performance and increase efficiency.In view of the overall device will often sail in the prolifera dense offshore shoal area or even reef area,the need for water jet propeller to play sufficient performance and reduce noise and vibration,and take into account as far as possible to extend the service life of water jet propeller.Fluent software was used to analyze the performance of water jet propeller under different inlet channel lengths and diameters,and its judgment indexes included velocity field unevenness,blade cavitation and water jet velocity,in order to improve the problems faced by the water jet propeller selected by this device and complete the selection. |
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