Azov-Black Sea Engineering Institute
Author list of organization
List of articles written by the authors of the organization
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INFORMATION SYSTEMS AND PROCESSES FOR CALCULATING ILLUMINATION OF INDUSTRIAL PREMISES
DescriptionNowadays on the market, there is a large variety of CAD systems and specialized software; however, to solve effectively research and design problems there remains task of development and implementation of national Russian-language information systems that are compatible with the requirements of Russian regulations to support the design and research of industrial buildings and facilities parameters. Being irrespective of the sizes and structure of the industrial enterprises, there are a number of approved design techniques, including calculations of lighting, heating, ventilation, water supply and so on. To improve the efficiency of the interested experts work on their basis there were developed efficient algorithms as well as information systems and database. In the article there is justified the necessity of the developing information systems and processes of industrial premises designing on the example of lighting calculation. We have highlighted the main ways of increasing project work efficiency of engineering and technical personnel on industrial enterprises. For their practical implementation, there is required proper organization of information flows by creating programs and databases complex. The article includes information about the "Calculation of lighting industrial enterprises" subsystem that is the part of the "Designing of industrial enterprises" information system. We have presented methodology of work with the software product in the mode of calculation of industrial premises lightning with fluorescent lamps using the method of light flux utilization factor
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INFORMATION SYSTEMS AND PROCESSES OF MONITORING POWER TRANSFORMERS CONDITION
DescriptionTo solve the problem of reducing the power supply system’s reliability a prompt full-scale diagnostics based on modern methods can help. Inculcation of information systems for the operational diagnostics implementation allows providing the operating personnel with information that enables to predict possible infringements in power transformers work and to prepare in advance an action plan to address them. The paper presents fragments of the developed monitoring system of power transformer using programmable logic controllers. Within the work of the system there were marked such groups of controlled parameters as information about temperature and the cooling system work; magnitude of windings voltage per phase; the windings current values per phase; information about being transmitted and transmitted power; information about the insulation state. There is designed a functional scheme of the system for monitoring the state of the power transformer. There is described a general algorithm of system functioning. There is developed graphical operator interface that allows to monitor the object state and to manage the system state. Using XML markup language there was designed format of data packets. Designed hardware and software package can be used in the educational process, as it allows to improve the quality of students training, to bring them closer to the realities of modern professional activities; in operational activities as complying with the approved domestic calculating methods replacement of foreign software; in science in solving problems of analysis and optimization of operating parameters of power transformers
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Description
In the article, we have described the main causes of the fuel-air mixtures explosion and such affecting factors as air blast and fragmental fields. Explosions are performed using various sources of energy. The scale of the explosions consequences depends on their detonation power and the environment in which they occur. The range of the affected areas can reach several kilometers. The basic parameter that characterizes the explosives is the maximum pressure. Increasing distance from the explosion, the maximum pressure and pulse decrease and action duration increases. There is presented method, which is developed in Windows-based applications that allows investigate the dependence of the destruction level on the distance and the explosion epicenter. Algorithm of application operation implements automatically filling of the "molar mass of combustible material, g/mol" field depending on the user’s choice of the flammable substance name. After calculating the raw data, the user moves to the calculation of all the parameters and sees the results of the calculation. By default, the calculation results are presented in tabular form. Further, the results of calculation are presented with a graphical representation of data. The developed software can be used in the educational process at studying such disciplines as "Theory of burning and explosion", "The production safety", "Protection in emergency situations", and also be recommended to practical workers in the sphere of labor safety, prediction and assessment of the technological accidents and catastrophes consequences, teachers of this profile disciplines
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Description
This article presents main water supply systems and justifies the choice of direct flow of water supply system in the application of regulation of electric drive for pumps, which doesn’t have any tanks to create pressures required for fire-governmental purposes. This avoids interruption in the supply of reserve while water freezing. In the article the substantiation of the necessity of implementation of adaptive algorithm in modern-WIDE frequency converters by a substantiation of the number of stages of ratio control of voltage-frequency mains. It was revealed that the number of degrees of regulation of 10-12 gives optimum. Modern frequency converters allow you to change the regulation law, establishing 3-5 points of regulation. Therefore, the introduction of adaptive algorithm will reduce the power consumption of the electric drive of the pump of the water supply system. The article shows the simulation model of the "the converter frequency-induction motor," plots of the stator current of mains frequency and active power, surface speed and phase current when changing the voltage and frequency of the mains. These dependences confirm to have applicability of adaptive algorithm in the regulation of modern frequency converters with the skalar administration. Simulation model confirms the sub-physical experiments on a real motor and frequency converter with adaptive control algorithm. As a result of the selection of the parameters, we obtain the voltage reduction of the phase current, and reduce electricity consumption by 5-7%
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THE ADDITIONAL LOSSES OF THE ELECTRIC POWER IN THE 10/0.4 KV POWER TRANSFORMERS
DescriptionThe results of calculation of the constituents of load losses of the electric power in the 10/0.4kV power transformers of the rural household networks of 0.38 kV. Proportions of additional losses of the electric power in the 10/0.4kV power transformers are statistically processed
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THE HARDWARE SOURCES OF THE AUTOMATION OF THE SOLAR WATER HEATING OF THE AGRICULTURE PLANTS
DescriptionThe article deals with the necessity of the uninterrupted control of the work quality of the solar heating system. The advantages of the microcontroller systems, which gave their evolution in the last years, are shown. The possibilities of the usage of the microcontroller systems for carrying the work quality control are shown. The electrical principal scheme of the system of the automatic control of the solar water heating which allow to control the work quality control are shown. The system was divided into interconnected parts. The methods of the temperature control by the electronic temperature sensors 18B20, water control by the optical pair with open channel and water quantity meter with the optical wheel, water level in the tank by the ultrasonic sensor of the distance and level of the solar radiation by the pyranometer are shown. The necessarily calculation of the geometric tank sizes and water velocity in the solar collector are carried out. The corresponding hardware resources of the PIC microcontrollers like hardware counters, timer with the ability to allow counting by the external signal (Gate Control), analog-digital converter and fixed voltage reference module are described. The algorithms of the control of the water temperature in the tank and the control of the filling the tank with the hot water from the solar collector are described. The methods of the transmitting information to the operator are shown. The advantages of the microcontroller control are described
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ANALYSIS METHODS TO INCREASE THE CHARGING VOLTAGE OF THE ALTERNATOR
05.20.00 Processes and machines of agroengineering systems
DescriptionThe article considers the problem of insufficient charging voltage during the joint operation of the battery and alternator. A comparative analysis of the proposed ways of increasing the charging voltage of the generator
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Description
The existing settlement modes of loading of wheels of cars are defined for the conditions which are closest to road service conditions and are reflected in the existing standards. However these standards can't be applied to an assessment of functional qualities of systems of cushioning the cars which are operated in the conditions of agricultural production. The small step of roughnesses, change the cushioned characteristics under the influence of operational factors lead to emergence of the off-design modes of the movement. The purpose of the work was the research of loading of wheels of the car when moving on mulch of grains. For the purpose of obtaining characteristics of the roughnesses influencing car wheels we have recorded a smoothed microprofile of the field and got the statistics, rated autocorrelated function, spectral density of influence of a microprofile. For carrying out the researches the known mathematical model of a car road system was accepted. Influence of speed of the movement, normal rigidity of springs and tires, coefficients of damping of a suspension bracket and tires on vertical fluctuations and loading of wheels of forward and back axes of the car is investigated. The executed researches showed that the movement of the car is followed by fluctuations of indicators of loading of running system with obviously expressed periodic components. The change of the coefficient of damping of a passive suspension bracket and tires in possible limits has no essential impact on loading of wheels. Values of normal roughness of springs of forward and back axes of the car, normal rigidity of tires at which dynamic load of wheels of the car is minimum are established
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06.00.00 Agricultural sciences
DescriptionThe use of physical factors for preplant stimulation of seeds increases vigor, germination and improves the yield of agricultural products. One of the effective ways to improve seed grain quality is to impact on the seeds using physical factors, in particular, an alternating electromagnetic field of industrial frequency of 50 Hz (EMF of IF of 50 Hz). We studied the impact of EMF of IF of 50 Hz on the energy germination of mid-ripening spring barley seeds of promising varieties Vakula, Vikont, Ratnik. Carrying out the experimental studies we used a laboratory setup with annular pole points of rectangular cross section. Our disperse analysis resulted in data on germinative energy of seeds of spring barley varieties Vakula, Vikont, Ratnik, which showed that while treating seeds of spring barley by an alternating electromagnetic field of industrial frequency of 50Hz, we obtained the best values of germinative energy of seeds of Variety Vikont with a mode of processing being equal to W = 16%, T = 2 c, L = 0,03 m