Hydraulic power dredging ship, mud discharging pipeline thereof and determination method for mud discharging pipeline throat
A technology for determining methods and pipelines, applied to mechanically driven excavators/dredgers, earth movers/shovels, construction, etc., can solve problems such as blockage of mud discharge pipelines, overloaded operation of mud pumps, and impact on construction efficiency, etc. , to achieve the effect of improving construction efficiency, overcoming potential safety hazards, and matching reasonably
Inactive Publication Date: 2018-10-12
CCCC SHANGHAI DREDGING
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Problems solved by technology
At present, the specification and size of the shrinkage at the outlet of the sludge discharge pipeline is mainly based on experience, and there is no scientific and accurate calculation method. During use, the blockage of the sludge discharge pipeline or the overload operation of the mud pump often occur due to unreasonable selection of the size of the shrinkage. dangerous situation
The unreasonable choice of necking will not only affect the construction efficiency, but also cause great safety hazards to ship equipment
Method used
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[0037] The present invention is described in detail below in conjunction with accompanying drawing:
[0038] Please refer to figure 1 , the following takes the application of the new Haiying wheeled cutter suction ship in the Jinshan construction site as an example, and the necking that is suitable for the working conditions determined by the present invention. The specific steps are as follows:
[0039] Step 101: Use an underwater mud pump plus an in-cabin mud pump to transport mud with a mud discharge pipeline with an inner diameter of 800 mm and a shrinkage diameter of 450 mm at rated speed. 100 meters; the length of the underwater mud discharge pipeline is 630 meters; the length of the underwater mud discharge pipeline is 2313 meters; the length of the land mud discharge pipeline is 345 meters; plus various elbows and other factors, the actual row distance About 3400 meters, that is, the total length of the mud discharge pipeline is about 3400 meters. The rated total po...
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The invention provides a hydraulic power dredging ship, a mud discharging pipeline thereof and a determination method for a mud discharging pipeline throat. The method includes the steps that according to the performance curve of a mud pump communicating with the mud discharging pipeline, the rated flow and the ideal lift provided by the mud pump under the ideal slurry concentration are determinedthrough the rated total power of the mud pump; under the ideal slurry concentration, the lift loss of the mud pump after slurry is conveyed along the mud discharging pipeline is calculated; accordingto the difference value of the ideal lift and the lift loss, the actual lift value at the throat position of the mud discharging pipeline is determined; according to the actual lift value at the throat position of the mud discharging pipeline, the corresponding slurry flow velocity is determined when the potential energy at the throat position of the mud discharging pipeline is converted into thekinetic energy; and according to the slurry flow velocity at the throat position and the rated flow, the area of the new throat is calculated and determined. According to the hydraulic power dredgingship, the mud discharging pipeline thereof and the determination method for the mud discharging pipeline throat, reasonable matching of the throat of the mud discharging pipeline can be achieved, sothat the mud discharging pipeline is matched with the performance of the mud pump.
Description
technical field [0001] The invention relates to the technical field of dredging and reclamation hydraulic engineering, in particular to a hydraulic dredging ship, a mud discharge pipeline, and a method for determining the shrinkage of the mud discharge pipeline. Background technique [0002] For hydraulic dredging vessels such as cutter suction dredgers and trailing suction dredgers, in order to ensure the construction efficiency of mud discharge and the safe operation of the mud pump during the mud discharge process, the characteristics of the mud pump need to match the characteristics of the mud discharge pipeline. When the sludge discharge pipeline is short, the effect of matching the performance of the sludge pump with that of the pipeline cannot be achieved by adjusting the speed of the dredge pump drive device. Usually, it is solved by installing a shrinkage at the outlet of the sludge discharge pipeline. At present, the specification and size of the shrinkage at the o...
Claims
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Login to View More IPC IPC(8): E02F3/88E02F3/90G01B5/14
CPCE02F3/885E02F3/907G01B5/14
Inventor 李晟杨增海冯庆李少俊嵇文远赵甲
Owner CCCC SHANGHAI DREDGING