At the present time there is active development of oil and gas fields located offshore in the northern seas. Mineral resources are mined in severe natural and climatic conditions. This paper shows the analysis of accidents that occurred on the platforms, reviews existing means of evacuation, indicates solutions to some actual safety problems. This paper offers a universal life-saver with rotary-screw mover, which can effectively overcome various environments. Features of rotary-screw mover allow to use technological and transport means in such areas where the usage of other movers is impossible or irrational. However, the creation of such devices is possible only with relevant research; such studies are conducted by Nizhny Novgorod State Technical University named after R.Y. Alekseev. The article gives the general form of conceptual design of the machine for rescuing personnel from ice-resistant oil and gas platforms. Requirements to the design of life-saver devices are strictly regulated by normative documents. The article provides a methodology for determining the optimal size and constructive forms of rotaryscrew movers depending on the weight of the machine and its destination, as well as areas of the machine's usage. A calculative program was created on the basis of this methodology. The program consists of three major "blocks". The first block is responsible for modeling a rotary-screw mover. This block takes into account all possible combinations of constructive forms of movers, and contains the algorithm of size variation for each structural element. Thus, all possible type-dimensional variants of rotaryscrew movers are considered in the process of modeling. The second block allows simulating a variety of terrains, as well as their combinations. It also considers the forces and occurring processes, arising in the contact zone of a mover and terrain. The third block was responsible for the behavior of rotary-screw machine. Thus, the program allowed to define two important things: the best parameters of a mover according to the given conditions, and identifying the character of each option's influence on the traction-speed parameters of the machine. To verify the size of mover have been made strength calculations. At the same time the least reliable design solution was chosen. As a result, recommendations on constructions of a rotary-screw mover in various conditions were obtained. The optimal ratio of the size of mover for driving on snow cover is given as an example of recommendations. These research's results are not limited by creating life-saver devices, but may also be applied to the creation of other special vehicles. However, determination of optimal parameters of a mover is based on the uncontrolled linear movement of a rotary-screw machine simulation, which is obviously a drawback of the created model. That is why we plan to improve the model in future. The main aim of this article is to show the methodology for determining the optimal parameters of rotary-screw mover, and to show the first results of its implementation.


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    Titel :

    The Concept and Methodology of Creating the Universal Life-Saver with Rotary-Screw Mover


    Beteiligte:


    Erscheinungsdatum :

    2012


    Format / Umfang :

    14 Seiten





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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