Russian Journal of Water Transport最新文献

Issues of laser welding technology of the ends of heat exchange pipes in pipe gratings. 管道光栅中热交换管道末端的激光焊接技术问题。

Russian Journal of Water Transport Pub Date : 2023-12-20 DOI: 10.37890/jwt.vi77.416

Evgeniy V. Grinev, S. N. Valiulin, Alexander A. Khlybov, Yuri I. Matveev

{"title":"Issues of laser welding technology of the ends of heat exchange pipes in pipe gratings.","authors":"Evgeniy V. Grinev, S. N. Valiulin, Alexander A. Khlybov, Yuri I. Matveev","doi":"10.37890/jwt.vi77.416","DOIUrl":"https://doi.org/10.37890/jwt.vi77.416","url":null,"abstract":"The paper shows that the reliability and service life of shipboard heat exchangers largely depends on the quality of fixing heat exchange pipes in pipe grids. The methods of fixing pipes in a pipe grid depends on many factors: the type of heat exchanger, the material from which the pipes and pipe grids are made, the thickness of pipes and pipe grids, technological capabilities taking into account the chosen design, etc. One of the most effective ways of fixing pipes in the tube grids of heat exchangers is welding. Welds are characterized by strength, manufacturability, and provide a high service life of the joint. In the article, it is proposed to use laser welding to perform welded joints. Laser welding provides a high focused energy density concentrated on a very small area with relatively low energy input and heating of adjacent metal layers. In laser welding, there is no strong ionizing radiation, the magnetization of the workpieces does not affect the laser beam, which is relevant when welding magnetic materials. The effect of laser radiation is highly local, carried out in the air, including in the environment of protective gases. Thanks to this, laser welding can be used without problems to connect large-sized metal structures. The laser beam is easily transported with the help of mirror optical systems or through a light guide and is directed to hard-to-reach places. At the same time, reliable and operational control of the laser welding process with adjustable energy characteristics is provided. The article describes the technological equipment that can be used for welding heat exchange pipes and pipe gratings.","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"74 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Technological features of OOG transportation by sea transport 海上运输 OOG 的技术特点

Russian Journal of Water Transport Pub Date : 2023-12-20 DOI: 10.37890/jwt.vi77.451

Denis D. Strelnikov, Inessa A. Strelnikova

{"title":"Technological features of OOG transportation by sea transport","authors":"Denis D. Strelnikov, Inessa A. Strelnikova","doi":"10.37890/jwt.vi77.451","DOIUrl":"https://doi.org/10.37890/jwt.vi77.451","url":null,"abstract":"The article discusses the features of the transportation of oversized cargo by sea on container ships. The main governing documents and rules for the confirmation and placement of oversized cargo are indicated. The problems are reflected in the guidance documentation, since at the moment it is impossible to take into account all the features of a specific oversized cargo when creating a loading plan and cargo fastening tools on a flat rack. The scheme of placement of oversized cargo on a container ship is given. Options for attaching oversized cargo to a flat rack are considered in detail. The loads are divided into categories, for each of which the methods of fastening are given in accordance with the peculiarities of the geometric shapes of the load and the weight distribution. The conclusion indicates the need to create a software module for standardizing the rules for loading oversized cargo, which will systematize all the characteristics of oversized cargo, calculate the best options for placing cargo on a ship, taking into account the safety requirements and optimality of the cargo plan, reduce accidents during loading / unloading and transportation. It was also noted that the standardization of the loading module for oversized cargo will allow integrating information about the transportation of oversized cargo into the overall system for determining the efficiency and quality of container shipping.","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"530 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Formation of a strategic management system for a shipping company 为一家航运公司建立战略管理系统

Russian Journal of Water Transport Pub Date : 2023-12-20 DOI: 10.37890/jwt.vi77.422

Viktor M. Buneev, Sergey V. Nozdrachev

{"title":"Formation of a strategic management system for a shipping company","authors":"Viktor M. Buneev, Sergey V. Nozdrachev","doi":"10.37890/jwt.vi77.422","DOIUrl":"https://doi.org/10.37890/jwt.vi77.422","url":null,"abstract":"Proposals for the formation of a strategic management system in a shipping company are outlined. It is presented in the form of a certain organizational structure, between which internal and external connections are established, carried out thanks to appropriate information support. A scheme for the interaction of elements of the system of strategic management of fleet operations is proposed.Strategic management processes are carried out at the center for the adoption and implementation of strategies in accordance with the developed algorithm. At the same time, a set of tasks is considered to justify individual strategies in the modern conditions of shipping companies operating on inland waterways. The most pressing tasks of the strategic management process of a shipping company are the development, adoption and development of strategies for using the fleet for transportation. At the same time, risk factors caused by the probabilistic nature of changes in the level of the depths of the shipping channel are taken into account. The problem was solved using an economic-mathematical model in a parametric formulation.The specific operational conditions of the fleet in the Yenisei basin are considered. The result of its implementation are proposals for the introduction of a rational strategy for using the fleet in given directions of cargo transportation.","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"464 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139170499","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Increasing the energy efficiency of a fishing vessel by estimating the motion parameters of a towed object 通过估算拖曳物体的运动参数提高渔船能效

Russian Journal of Water Transport Pub Date : 2023-12-20 DOI: 10.37890/jwt.vi77.417

A. Ivanovskaya, Vladimir A. Zhukov, Aleksei N. Ivanovskii

{"title":"Increasing the energy efficiency of a fishing vessel by estimating the motion parameters of a towed object","authors":"A. Ivanovskaya, Vladimir A. Zhukov, Aleksei N. Ivanovskii","doi":"10.37890/jwt.vi77.417","DOIUrl":"https://doi.org/10.37890/jwt.vi77.417","url":null,"abstract":"The optimal mode of towing fishing gear has a direct impact on the energy efficiency of the fishing vessel. To build the combined traction characteristics of the vessel and trawl systems, data are needed on the nominal moments on the winch and engine drum, as well as the traction force in the warp. Estimation of the movement parameters of the towed object will make it possible to haul warps without overloading the trawl winch and the main engine. The paper proposes a block diagram of the algorithm for estimating the motion parameters of a trawl system. Processing of the current measurements of the warp tension in real time is carried out by digital signal processing methods based on the constructed optimal linear filter, which will be used to obtain the tension on the winch without taking into account the noise that occurs both as a result of the operation of the equipment and under the influence of the random nature of the warp tension process itself. and external hydrometeorological factors. Estimation and prediction of dynamic parameters is necessary for the development of an automated control system for a ship's winch, regardless of its purpose. Therefore, the results presented in this paper can be used in solving problems of automation of lifting equipment operating in non-stationary conditions.","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"58 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138954674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On the issue of carrying out mooring tests of a ship power plant in shallow water conditions 关于在浅水条件下进行船舶动力装置系泊试验的问题

Russian Journal of Water Transport Pub Date : 2023-12-20 DOI: 10.37890/jwt.vi77.414

Elena V. Bogatyreva

{"title":"On the issue of carrying out mooring tests of a ship power plant in shallow water conditions","authors":"Elena V. Bogatyreva","doi":"10.37890/jwt.vi77.414","DOIUrl":"https://doi.org/10.37890/jwt.vi77.414","url":null,"abstract":"In the process of mooring trials, as well as when ships are sailing in shallow water, difficulties often arise in ensuring normal operating conditions for the propulsion complex, the performance of the power plant and the ship as a whole. The article outlines the problems during mooring tests in shallow water. Mooring tests of a large-tonnage tanker in shallow water conditions are considered, when the operation of the main circulation pump of the cooling system is disrupted due to contamination of the flow path of the main condenser with soil particles. The economic inexpediency of testing a tanker at sea when it is anchored or barreled in an area that is safe for navigation and has sufficient water depth is substantiated. The method of taking cooling water from above with the help of a caisson is considered, which eliminated unproductive costs. A method of mooring a ship is given, in which the water jet from the propeller does not harm the berthing facilities and does not erode the soil of the water area; the means of simulating the nominal parameters of the actuators are described, which makes it possible to carry out mooring tests of mechanisms, systems and devices without bringing the main power plant to the mode of increased loads, and, as a result, to reduce the testing time.","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"24 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138956367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Energy-saving installation of a river vessel 内河船舶的节能装置

Russian Journal of Water Transport Pub Date : 2023-12-20 DOI: 10.37890/jwt.vi77.450

V. N. Timofeev, I. Salakhov, Liudmila M. Kutepova, Nikolay V. Grechko

{"title":"Energy-saving installation of a river vessel","authors":"V. N. Timofeev, I. Salakhov, Liudmila M. Kutepova, Nikolay V. Grechko","doi":"10.37890/jwt.vi77.450","DOIUrl":"https://doi.org/10.37890/jwt.vi77.450","url":null,"abstract":"This article relates to diesel engineering and can be used by design organizations and river fleet vessels in operation. The device of the energy-saving installation of a river vessel uses a heat pump with a high-temperature two-stage compressor and an Organic Rankine Cycle (ORC). In a two-stage compressor, the temperature of the low-boiling substance reaches 100°C. Further, this steam is condensed in the ORC condenser, while the coolant is heated to 95-98°C and the resulting coolant is distributed through a three-way valve: part of the coolant flow enters the heating object, the other part of the coolant enters the ORC evaporator through a three-way valve, where heat exchange with a low-boiling substance takes place. The resulting high-pressure steam then enters the turbine. In this case, the steam turbine is driven with a generator and electrical energy is generated. The proposed energy-saving installation can be used by river vessels during cargo operations and forced stops, during which the power plant: the main marine diesel engine, diesel generator and auxiliary boiler plant are inoperative, which leads to significant fuel savings of the ship power plant.","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"124 38","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138953566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A method for estimating the transverse forces developed by the propulsion and steering system, based on the results of vessel circulation tests 根据船舶循环测试结果估算推进和转向系统产生的横向力的方法

Russian Journal of Water Transport Pub Date : 2023-12-18 DOI: 10.37890/jwt.vi77.440

Vadim I. Tikhonov, Yuri V. Bazhankin, Igor M. Osokin, Alexey V. Mukhin

引用次数: 0

The application of Erlang model for process simulation of boundary monitoring of ships proceeding through the Kerch-Yenikalsky Strait 应用 Erlang 模型模拟通过刻赤-叶尼卡尔斯基海峡的船舶边界监测过程

Russian Journal of Water Transport Pub Date : 2023-12-18 DOI: 10.37890/jwt.vi77.435

Vitalii V. Sviatskii

{"title":"The application of Erlang model for process simulation of boundary monitoring of ships proceeding through the Kerch-Yenikalsky Strait","authors":"Vitalii V. Sviatskii","doi":"10.37890/jwt.vi77.435","DOIUrl":"https://doi.org/10.37890/jwt.vi77.435","url":null,"abstract":"This article investigates the peculiarities of the Kerch-Yenikalsky Channel (KEC) passage. The Kerch Strait is one of the most intensively used sea routes in the Russian Federation, which results in a constant flow of ships and requires organized traffic. The Kerch Strait throughput capacity was calculated from statistical data on the number of vessels that pass through it on a daily basis. The number of vessels passing through the Kerch Strait increases noticeably every year. The increase in the number of vessels passing through the Strait creates additional problems related to safety of navigation and environmental sustainability of the region. For example, an increase in the number of ships can lead to an increased probability of collisions and accidents, as well as to the deterioration of the environmental situation in the area of the strait. In this paper, an algorithm is developed and the factors affecting the KEC passage process are analyzed. The Erlang model is used as a model. This model allows to carry out simulation modeling of the process of customs control providing quantitative data. To build the model, statistical processing of data on the passage of customs control was performed. As a result of simulation modeling the following results were obtained: 1.The maximum throughput capacity of a given control section was determined; 2.Calculated the optimal composition of the customs control vessels.","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"13 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of a mathematical model of underwater towing, based on single- and double-link rod models of towing lines 基于牵引绳单链杆和双链杆模型开发水下牵引数学模型

Russian Journal of Water Transport Pub Date : 2023-12-18 DOI: 10.37890/jwt.vi77.441

Maksim S. Tishchenko, Nikolai V. Ivanovskii

{"title":"Development of a mathematical model of underwater towing, based on single- and double-link rod models of towing lines","authors":"Maksim S. Tishchenko, Nikolai V. Ivanovskii","doi":"10.37890/jwt.vi77.441","DOIUrl":"https://doi.org/10.37890/jwt.vi77.441","url":null,"abstract":"This paper develops a mathematical model of underwater towing by the example of a complex fishing complex \"vessel - vaer - trawl\" by calculating its traction and speed characteristics. The tow line is an important factor when towing an underwater object because it can affect the stability and maneuverability of the towing vessel. If the shaft is too long, it can create a lot of drag and make it difficult to move the boat. On the other hand, if the shaft is too short, it may cause the towed object to sink too deeply and potentially damage the object or towing equipment. Consequently, it is critical to select the proper towing system settings based on the size and weight of the object being towed, the depth of the stroke, and the environmental conditions. Existing methods for writing models of tug - towing object systems, namely, methods based on stationary and non-stationary nature of the vaer selection process are investigated. The paper presents a comparative analysis of single-link and two-link rod models of towing lines. The main errors in the construction of trajectories of towed objects using these types of towing lines are revealed. In particular, one of the results of the study is, building a model of the system \"ship - vaer - towed object\", which has a similar accuracy index to the more complex two- and three-link lines.","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"35 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175854","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Methods of vehicle selection in the multimodal passenger transportation system 多式联运客运系统中的车辆选择方法

Russian Journal of Water Transport Pub Date : 2023-12-18 DOI: 10.37890/jwt.vi77.434

Zhanna Yu. Shalaeva, V. N. Kostrov

{"title":"Methods of vehicle selection in the multimodal passenger transportation system","authors":"Zhanna Yu. Shalaeva, V. N. Kostrov","doi":"10.37890/jwt.vi77.434","DOIUrl":"https://doi.org/10.37890/jwt.vi77.434","url":null,"abstract":"The article presents the results of the analysis of the methods of justification and choice of vehicles in the organization of long-distance multimodal passenger transportation involving water and related modes of transport. The analysis of the factors determining the need to use a combined approach in the organization of passenger transportation is carried out. Analytical and mathematical methods of selecting modes of transport are considered, including methods of multi-criteria optimization in the problem of selecting vehicles in the combined passenger transport system. An algorithm for selecting vehicles in the multimodal passenger transportation system has been compiled, which takes into account all of the above stages. The calculation of quantitative and analysis of qualitative indicators of the choice of the mode of transport with the participation of water transport and specific vehicles is carried out on the example of the organization of the passenger line \"Nizhny Novgorod – Kazan – Samara\" using various schemes of combining modes of transport. The proposed approach and algorithm for the complex solution of the problem ensure the coordination of the economic interests of the interacting modes of transport and increase the attractiveness of long-distance multimodal communication for passengers","PeriodicalId":145731,"journal":{"name":"Russian Journal of Water Transport","volume":"35 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139175744","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0