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The wet method of cleaning the blast furnace gas from the particles of grate dust is one of the most common. The hollow nozzle scrubber is the device for wet cleaning of blast furnace gas in which the cleaning of blast furnace gas is carried out due to the interaction of particles of grate dust with droplets of dispersed technical water. The principle of cleaning the blast furnace gas in the hollow nozzle scrubber is based on the inertial mechanism of collision of grate dust particles with droplets of dispersed process water. After the particles are wetted, stick together and fall out of the flow of the cleaned gas under the influence of gravity. In this paper, we propose a method for calculating the efficiency of blast furnace gas purification in a hollow nozzle straight-through scrubber, which is based on the division of the volume of this gas purification apparatus into even sections. Because the trajectory of the droplet in the blast furnace gas flow in the hollow nozzle scrubber has a parabolic shape, radial component of the absolute velocity of the droplet s taken into account in this technique to determine the efficiency of catching dust particles. The correction factor in the expression for determining the fractional efficiency coefficient of the blast furnace gas purification from the grate dust determines the presence of «dead zones» when the dusty gas is irrigated with technical water sprayed by involute injectors. In addition, the presented method takes into account the increase in the efficiency of cleaning the blast furnace gas due to the process of condensation of water vapor from the flow of dusty gas in the lower part of the hollow nozzle scrubber.

The article discusses the issues of using the technology of replacing inventory rails with rail lashes of a jointless track. For the production of works on the replacement of rail lashes, excavators on a combined course have been selected as the leading machines, which in recent years have been widely used in the production of works for the current maintenance and repair of the railway track. The paper presents the results of a comparative assessment of the use of rail lash replacement technology using attachments and using a pair of trolleys. In order to select the best technology for the production of works on the replacement of rail lashes, a methodology for assessing the economic efficiency of using a particular technology has been developed. The main indicator in the calculations were the given operating costs, taking into account the cost of the machine per unit of work, the cost of relocating the machine, the delay of trains, the wages of track fitters and the discharge of rail lashes. According to the results of the calculation, it was found that it is economically advantageous to replace rail lashes at the front of work up to 4 km using technology using a pair of trolleys, at the front of work more than 4 km, it is advisable to replace rail lashes using technology using attachments. The maximum economic effect when using technology with the use of attachments is achieved with a work front of 10 km. A comparison of the results of work on two technologies gives grounds to conclude that with a three-hour «window», the volume of work performed on the technology with the use of attachments is 1,7 times higher than the volume of work performed on the technology with the use of a pair of trolleys.

In the article the questions of increase of efficiency of structural subdivisions, members of the directorates of the West Siberian railway - branch of JSC "Russian Railways", such as infrastructure Directorate, Directorate railcar rolling stock and the Directorate of buildings and structures. The aim of this work is to identify structural units with the lowest energy efficiency indicators. This requires estimation of an indicator such as relative energy efficiency over a period of time equal to one calendar year, based on data of annual consumption of electric energy and annual volume of enterprise work. The article also outlines the main provisions of the concept analysis and monitoring the energy efficiency indicators of stationary objects of the railway transport, which will identify inefficient structural subdivisions with the use of control actions to reduce irrational consumption of energy resources. Calculation of the relative energy efficiency is one of the stages of this concept. The result is a received charts of the relative energy efficiency of structural subdivisions of the West Siberian railway which allows to make a comparison of this indicator. According to the results of comparison found that 10 of the 65 structural units have a low indicator of relative energy efficiency. This suggests the need for careful study the reasons of the low values of energy efficiency in these structural subdivisions and proposals the measures to eliminate this situation. The method and sequence of these activities proposes into the third and fourth stages of the concept. The establishment and subsequent application of a unified approach to the analysis and monitoring of energy efficiency indicators for all departments will increase the energy efficiency of the territorial branches of JSC "Russian Railways" and the holding company as whole.

The article presents the results of the development and implementation of a method for controlling the technological processes of repairing locomotives based on network planning. The methodology allows you to track online bottlenecks during current repairs and reduce the duration of the critical path by varying the time indicators of events and works, using the aggregate-nodal repair method, redistributing resources between critical and non-critical works. The developed methodology is based on the adjustment of basic repair networks, taking into account the workload of process equipment and repair personnel, the availability of spare parts and materials, the need for unscheduled work during the planned installation of a particular locomotive for repair. This approach was implemented within the framework of the automated control system (ACS) «Network Schedule» and provides control and adjustment of the implementation of technological operations according to the indicators of technological preparation of repairs. An algorithm has been developed for determining a generalized performance indicator when assessing the quality of functioning of an automated maintenance and repair control system for a locomotive in service locomotive depots.

Currently in Russia there is an active development of industry, which requires a large amount of energy resources. At the same time, there are several obstacles in the way of providing all consumers with the required volume and, most importantly, the quality of energy. First of all, this is due to the technical condition of the equipment of both consumers and energy producers and the absence of programs for the implementation of measures aimed at increasing energy efficiency. Today, a full-fledged assessment of the energy efficiency of the production of many enterprises is difficult due to the lack of a single physical and mathematical apparatus and a universal criterial assessment of the energy efficiency of enterprises. This leads to the fact that a correct assessment of energy efficiency indicators and energy saving potential is not fully possible. Most of the existing methods for assessing energy efficiency indicators are limited and allow assessing only one or several indicators, do not provide for linking all indicators into a single whole. In addition, there is no criterion for assessing energy efficiency that is uniform for all components of heat supply systems. A promising direction of modern research in the field of heat supply systems is the improvement of methods for assessing the energy efficiency of heat supply systems through the use of a physically and mathematically substantiated criterion for the energy efficiency of the heat supply system of industrial enterprises and the creation of unified methods and an algorithm for assessing the indicators of the energy efficiency of heat supply systems of various compositions and devices. Special attention is paid to assessing the reliability of the initial data. This assessment is possible using the correlation method. In practice, correlation and regression analysis is widely used to predict the consumption of heat energy. This approach can also be used when assessing the reliability of the initial data using the Chaddock scale. In the course of the research, methods of constructive and verification calculations, experimental and analytical research, the method of correlation analysis, and statistical research methods were used. As a result of the research, a unified, generalized methodology for assessing the indicators of the energy efficiency of the heat supply system of the enterprise has been developed. We created the algorithm given a comprehensive assessment of the energy efficiency of the heat supply system of an industrial enterprise and to assess the potential for energy saving.

When developing a set of organizational and technical energy saving measures, it is necessary to correctly assess the feasibility of using certain measures not only in terms of return on investment, but also based on the technological process of the enterprise. It is necessary to take into account not only the current parameters of the installed equipment, but also other, important factors: the degree of equipment utilization during the year, since this parameter in the equipment during the inter-heating period, as a rule, is significantly less than in the heating period. It should also take into account the prospects for the development of the enterprise. Many modern energy-saving technologies have a long payback period, and this is caused not so much by a small energy-saving effect as by the low popularity and low demand for these technologies, which leads to high purchase and maintenance costs. With the right choice and operation of equipment of this kind, an enterprise can significantly reduce the cost of its products and increase its competitiveness in the market. The article discusses the issues of approaches to assessing the potential of energy saving and the choice of priority areas for increasing the energy efficiency of heat supply systems of industrial enterprises. The described energy saving measures are applicable to the majority of existing heat supply systems and are the most common. The given procedures for assessing the technical and economic effect allow us to pre-evaluate the significance and feasibility of applying a particular event.

The article presents theoretical studies of the interaction of the compacting machine with the soil of the road bed of the railway embankment. The results of the studies make it possible to establish the parameters of the sealant, which ensure an efficient flow of the compaction process of the ground environment. It is established that the rigidity of the working body of the roller must vary over a wide range. Experimental studies of a new sample of the working body confirmed the possibility of adjusting the rigidity in the required range for the effective use of vibrating rollers in the construction of railroad soil embankments.