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TO THE QUESTION OF USE OF 3VL80S ELECTRIC LOCOMOTIVES AT THE SECTION TASHGUZAR - KUMKURGAN OF THE UZBEK RAILWAY
Oleg Ablyalimov
Candidate of Technical Sciences, professor, professor of the chair «Locomotives and locomotive economy» Tashkent State Transport University, Republic of Uzbekistan, Tashkent E-mail: o. ablyalimov@gmail.com
Jasurbek Yakubov
Master,
assistant of the chair«Locomotives and locomotive economy» Tashkent State Transport University, Republic of Uzbekistan, Tashkent E-mail: yarubovjasur517@gmail.com
^usan ^simov
Senior lecturer
of the chair «Locomotives and locomotive economy» Tashkent State Transport University, Republic of Uzbekistan, Tashkent E-mail: qosimov_husan@mail.ru
Anna Avdeyeva
Candidate of Technical Sciences, associate professor of the chair «Materials science and mechanical engineering» Tashkent State Transport University, Republic of Uzbekistan, Tashkent E-mail: nyusik22@mail.ru
Utkir Safarov
Master,
assistant of the chair«Locomotives and locomotive economy» Tashkent State Transport University, Republic of Uzbekistan, Tashkent E-mail: utkirsafarov104@gmail.com
К ВОПРОСУ ИСПОЛЬЗОВАНИЯ ЭЛЕКТРОВОЗОВ 3ВЛ80С НА УЧАСТКЕ ТАШГУЗАР - КУМКУРГАН УЗБЕКСКОЙ ЖЕЛЕЗНОЙ ДОРОГИ
Аблялимов Олег Сергеевич
канд. техн. наук, профессор, проф. кафедры «Локомотивы и локомотивное хозяйство», Ташкентский государственный транспортный университет,
Республика Узбекистан, г. Ташкент
Якубов Жасурбек Камолиддинович
магистр,
ассистент кафедры «Локомотивы и локомотивное хозяйство», Ташкентский государственный транспортный университет,
Республика Узбекистан, г. Ташкент
Косимов Хусан Рахматуллаевич
ст. преподаватель кафедры «Локомотивы и локомотивное хозяйство», Ташкентский государственный транспортный университет,
Республика Узбекистан, г. Ташкент
Библиографическое описание: TO THE QUESTION OF USE OF 3VL80S ELECTRIC LOCOMOTIVES AT THE SECTION TASHGUZAR - KUMKURGAN OF THE UZBEK RAILWAY // Universum: технические науки : электрон. научн. журн. Ablyalimov O.S. [и др.]. 2023. 2(107). URL: https://7universum.com/ru/tech/archive/item/15033
A UNiVERSUM:
№2(107)_i_j [ _Февраль. 2023 г.
Авдеева Анна Николаевна
канд. техн. наук,
доц. кафедры «Материаловедение и машиностроение», Ташкентский государственный транспортный университет,
Республика Узбекистан, г. Ташкент
Сафаров Уткир Истамович
магистр,
ассистент кафедры «Локомотивы и локомотивное хозяйство», Ташкентский государственный транспортный университет,
Республика Узбекистан, г. Ташкент
ABSTRACT
The substantiation of the kinematic parameters of the movement of freight trains and energy efficiency indicators of 3VL80S electric locomotives on the mountain section of the Uzbek railway in quantitative terms is given. The numerical values obtained by the authors are recommended for practical use in assessing the difficulty of the track profile of each section of the Karshi-Termez railway line of the Uzbek railway.
АННОТАЦИЯ
Приводится обоснование кинематических параметров движения грузовых поездов и энергетических показателей эффективности электровозов 3ВЛ80С на горном участке Узбекской железной дороги в количественном исчислении. Полученные авторами численные значения рекомендуются для практического использования при оценке трудности профиля пути каждого перегона железнодорожного направления Карши - Термез Узбекской железной дороги.
Keywords: investigation, result, the freight train, the electric locomotive, railway, traction mode, idling and braking mode, mountainous.
Ключевые слова: исследование, результат, грузовой поезд, электровоз, железная дорога, режим тяги, режим холостого хода и торможения, горный.
These studies were carried out in parallel with studies [1] for freight trains with a fixed mass of the composition Q = 2500 t and the number of axles m = 200 axles in the composition, which were driven by main three-section electric locomotives 3VL80S without stops and with stops at separate points of the mountain section Tashguzar - Boysun - Kumkurgan of the direction Termez - Karshi of the Uzbek railway.
The results of research [2-4] by scientists from near and far abroad, which, having a certain scientific interest and practical significance, are completely unrelated to the substantiation of the parameters of the main indicators of the energy intensity of the transportation work of traction rolling stock in relation to the real conditions for organizing freight rail transportation on the sections of Uzbek railways.
The purpose of the research was to substantiate the kinematic parameters of the movement of these freight trains and the main indicators of the transportation work of 3VL80S electric locomotives with an assessment of the traction quality of the hauls of the track profile of the Tashguzar-Kumkurgan section.
The mentioned assessment was made not according to the virtual characteristics of the track profile [5], but according to the total (total) and specific consumption of electric energy for train traction.
As a basis for the implementation of the research goal, we take traction calculations for 3VL80S electric locomotives when they drive freight trains with a train mass Q = 2500 t and the number of axles m = 200 axles on the Tashguzar - Kumkurgan section, performed by the authors taking into account the recommendations [2] and the initial data [6].
The results of the said traction calculation are presented in table 1 and table. 2, the analysis of which shows that the movement of freight trains without stops at intermediate stations allows:
• reduce the train travel time by 13.69 minutes and increase the technical speed by 2.51 km/h with an average estimated time per stop of 1.71 minutes;
• have a share of movement in modes traction of 25.49%, and idling and braking in 74.51%;
• in relation to the time of the train with stops, reduce the time of movement in the mode traction and in the idling and braking modes, respectively, by 4.14 and 9.55 minutes.
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Table 1.
Travel time of a freight train on hauls per passage and intermediate stations for deceleration - acceleration
№ in order Intermediate stations Distance, km Travel time, min Deceleration time/ acceleration, min
1 Tashguzar - - "/2,00
2 Dehkanabad 56,625 66,50 2,45/0,43
3 Acrobat 52,425 68,43 1,27/0,26
4 Aknazar 17,700 43,00 1,68/0,78
5 Shurab 9,625 20,66 0,58/0,78
6 Darband 8,000 16,25 1,72/0,38
7 Boysun 20,625 26,15 2,07/0,39
8 Tangimush 33,375 37,70 2,34/0,51
9 Kumkurgan 22,075 27,91 1,31/"
Total 220,375 306,60 1,68/0,69
In table. 3 and in fig. 1 (when moving with stops consumed by 3VL80S electric locomotives when they
at intermediate stations) shows the results of calcula- perform transportation work on hauls and on the
tions of the total and specific consumption of electricity Tashguzar-Kumkurgan section.
Table 2.
Travel time of a freight train when moving along hauls and on the section Tashguzar - Kumkurgan
of the Uzbek railway
№ in order Stages (hauls) Train running time (without stops / with stops), min
on the haul in mode
in traction idling and braking
1 Tashguzar - Dekhkanabad 66,50/68,40 26,62/26,47 39,88/41,93
2 Dehkanabad - Acrobat 68,43/70,09 42,55/43,47 25,88/26,62
3 Acrobat - Aknazar 43,00/44,70 0/0,63 43,00/44,07
4 Aknazar - Shurab 20,66/22,00 0/0,12 20,66/21,88
5 Shurab - Darband 16,25/17,25 0/0,12 16,25/17,13
6 Darband - Boysun 26,15/28,55 5,64/6,27 20,51/22,28
7 Boysun - Tangimush 37,70/41,00 2,94/3,82 34,76/37,18
8 Tangimush - Kumkurgan 27,91/28,30 0,40/1,39 27,51/26,91
Tashguzar - Kumkurgan 306,60/320,29 78,15/82,29 228,45/238,00
Table 3.
Electricity consumption by electric locomotives 3VL80S during the movement of a freight train on the section Tashguzar - Kumkurgan of the Uzbek railway
№ in order Stages (hauls) Total for hauls and section A, kWh Specific for hauls and section a, Wh/tkm brutto
without stops with stops
1 Tashguzar - Dekhkanabad 5582,5/39,43 5564,5/39,31
2 Dehkanabad - Acrobat 7955,9/60,70 7976,9/60,86
3 Acrobat - Aknazar 345,9/7,82 413,3/9,34
4 Aknazar - Shurab 148,5/6,17 186,5/7,75
5 Shurab - Darband 105,6/5,28 146,5/7,33
6 Darband - Boysun 1240,7/24,06 1253,7/24,31
7 Boysun - Tangimush 910,7/10,91 1034,0/12,39
8 Tangimush - Kumkurgan 330,5/5,99 396,9/7,18
Tashguzar - Kumkurgan 16620,3/30,17 16972,3/30,88
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Figure 1. Dynamics of electric energy consumption by electric locomotives 3VL80S on the hauls of the section Kumkurgan - Tashguzar of the Uzbek railway
As a result of the research, the following values of the main indicators of the use of 3VL80S electric locomotives on the Tashguzar-Kumkurgan section were obtained:
• estimated net travel time of a freight train for hauls and for acceleration-deceleration at intermediate stations;
• driving freight trains without stops, in comparison with similar driving with stops, provides a reduction in total and specific electricity consumption by 2.07 and 2.33 percent;
• Electricity consumption for train traction for one stop at intermediate stations, on average, is 44.00 kWh/stop;
• the average value of the mentioned electricity consumption for the four hauls of the section is, respectively, 285.80 kWh and 7.90 Wh/tkm gross - traffic with stops;
• 232.63 kWh and 6.32 Wh/tkm gross - non-stop driving;
• on the two hauls Tashguzar - Dekhkanabad and Dekhkanabad - Acrobat, there is an increase in the total (specific) consumption of electrical energy, in comparison with its average value, on average, respectively, by 19.46 ... 24.00 (4.89 ... 6, 24) and 27.91...34.20 (7.70...9.60) times.
Thus, numerical calculations have established that the stages Tashguzar - Dekhkanabad and Dekhkanabad -Acrobat are the most difficult stages in the mountain area Tashguzar - Kumkurgan.
As a result of the research, the authors obtained numerical values of the kinematic parameters of the movement of freight trains and the consumption of electric energy by 3VL80S electric locomotives in quantitative terms, which can subsequently be used for a feasibility study of the electric locomotives working on mountainous sections of railways, including Uzbek ones.
Reference:
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2. Nekhaev V.A. Some mathematical aspects of the study of a "rigid" dynamic model describing the interaction of a wheel and a rail [Text] / V.A. Nekhaev, V.A. Nikolaev // Scientific and technical journal Izvestia Transsib / Omsk State Transport University. - Omsk, 2015. No. 4 (24). - pp. 45 - 56.
3. Michal G, Huynh N, Shukla N, Munoz A, Barthelemy J (2017) RailNet: A simulation model for operational planning of rail freight. Transportation Research Procedia 25: pp. 461-473.
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6. Ablyalimov O.S. To the study of the operation of electric locomotives on the section Tashguzar - Kumkurgan SJSRC "Uzbekiston temir yo'llari" [Text] / O.S. Ablyalimov, V.S. Kudryashov // Vestnik TashIIT, No. 2. - Tashkent: TashIIT, 2011. - pp 29 - 33.
