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    Wyświetlanie 1-7 z 7
    Tytuł:
    Corrosion influence on safety of hydraulic pipelines installed on decks of contemporary product and chemical tankers
    Autorzy:
    Banaszek, A.
    Łosiewicz, Z.
    Jurczak, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/259927.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    corrosion
    safety
    hydraulic pipelines
    Huber-Mises stresses
    product and chemical tanker
    Opis:
    The corrosion influence on hydraulic pipelines safety mounted on product and chemical tankers has been presented in this paper. The issue of axial forces in pipelines mounted along ship open decks, resulting from ship hull deformations in waves, is highlighted. Corrosion degradation phenomena of hydraulic pipelines on open deck is described. The analysis of degradation effect on thickness of carbon steel material of pipes is given and influence of the effect on stress level increase in hydraulic pipelines during exploitation at sea is focused. The discussion about fighting against corrosion in hydraulic pipelines on open decks is performed. All the problems analyzed in the paper are based on examples of events observed on product and chemical tankers built in Szczecinska Shipyard, Szczecin, Poland.
    Źródło:
    Polish Maritime Research; 2018, 2; 71-77
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer simulations of deformations and tensions in the pipelines of hydraulic lifting systems
    Autorzy:
    Szelangiewicz, T.
    Żelazny, K.
    Buczkowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/134995.pdf
    Data publikacji:
    2017
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    nodules
    hydraulic lifting systems
    deformations and tensions of lift pipeline
    mining
    collecting pipelines
    Opis:
    One of the methods of collecting polymetallic nodules from the sea floor is a hydraulic system using a single or double vertical pipeline. While mining, collecting pipelines suspended from a mining support vessel (MSV) move together. As a result of both the MSV’s motion with a suspended pipe system and water action (including deep-water currents) a vertical deflection and deformation occur along the pipeline. Simultaneously, stretching and bending tensions emerge along the pipeline. The article presents computer simulation results of vertical deflection and tensions within single and double vertical pipelines with fixed force from the ship’s movement (linear movement at constant speed) and regular force from the waves.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 52 (124); 37-44
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study into water hammer protection of a water supply duct in Movila Verde, Constanta
    Autorzy:
    Constantin, Anca
    Nițescu, Claudiu Ștefan
    Powiązania:
    https://bibliotekanauki.pl/articles/2065631.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Częstochowska
    Tematy:
    hydraulic systems
    numerical simulation
    fluid flow
    pipelines
    układy hydrauliczne
    symulacja numeryczna
    przepływ cieczy
    rurociągi
    Opis:
    Human health and well-being are modern day challenges that are directly related to quality of drinking water supply. The study is focused on a newly conceived independent water supply system in Plopeni, which takes water from a good quality underground source, and supplies seven villages either by a series of pumping installations or by gravity. The assessment of hydraulic parameters, energy saving possibilities and the best means to protect the pipes from water hammering are the main goals of the numerical simulation during either the normal or abnormal operation of the water supply duct that carries water from the Plopeni pumping station to the neigh bouring village of Movila Verde. The duct has a specific longitudinal profile that may induce unwanted and dangerous pressure variation during water hammering. The hydraulic parameters and energy consumption indicators were determined by numerical simulation in EPANET. The extreme values of pressure and the most vulnerable cross sections of the pipe during water hammering were identified by numerical simulation with a non-commercial software, named Hammer. The high-pressure values are not dangerous, but cavitation may occur. The hydraulic shock simulation was performed on different methods of protection, provided by closing procedures of the check valve, and considering that the duct is made of steel. The same simulations were considered for a HDPE-made duct of the same inner diameter. The simulation results led to the conclusion that a 60 s two-stages closing procedure proves to be the best solution to protect the steel-made duct from cavitation. In the second simulation, that of a HDPE duct with the same diameter, a 45 s two-stages closing of the check valve provides safe protection from cavitation.
    Źródło:
    Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2020, 9, 2; 39--52
    2299-8535
    2544-963X
    Pojawia się w:
    Budownictwo o Zoptymalizowanym Potencjale Energetycznym
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental effectiveness studies of the technology for cleaning the inner cavity of gas gathering pipelines
    Autorzy:
    Volovetskyi, V. B.
    Doroshenko, Ya. V.
    Tarayevs'kyy, O. S.
    Shchyrba, O. M.
    Doroshenko, J. I.
    Stakhmych, Yu. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/1818794.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    gas
    foam
    gas gathering pipeline
    hydraulic efficiency
    cleaning the inner cavity of pipelines
    gaz
    piana
    rurociąg
    sprawność hydrauliczna
    Opis:
    Purpose: The purposes of the article are to determine the hydraulic efficiency of two gas gathering pipelines of the Yuliivskyi oil and gas condensate production facility (OGCPF) and develop a set of measures to increase it; to experimentally determine the efficiency of using foams to increase the hydraulic characteristics of the gas gathering pipelines in the Yuliivskyi OGCPF; to develop a set of measures that will help to improve the hydraulic characteristics of gas gathering pipelines. Design/methodology/approach: The research methodology consists in determining the hydraulic efficiency of gas gathering pipelines before and after cleaning their inner cavity with foams with different expansion ratios and comparing the obtained values, which allows to objectively assess the efficiency of this cleaning method. The studies were performed within the framework of research and development work by the specialists of the Ukrainian Scientific Research Institute of Natural Gases. Findings: The pilot testing was carried out to determine the efficiency of cleaning the inner cavity of gas gathering pipelines with foams with different expansion ratios. It showed positive results. It was determined that cleaning the inner cavity of gas gathering pipelines with foams with the expansion ratio from 80 to 90 led to an increase in the hydraulic efficiency coefficient by 10.5%, and with foams with the expansion ratio from 50 to 60 - by 5.7%. The measures taken to clean the inner cavity of gas gathering pipelines from liquid contaminations have proven their efficiency and can be recommended for other fields. Research limitations/implications: The obtained results show that it is reasonable to conduct the experimental studies on the efficiency of cleaning the inner cavity of gas gathering pipelines with the foams with higher expansion ratios. To achieve the maximum quality of cleaning the gas gathering pipelines, it is necessary to develop a new method that will combine the use of foam and gel piston.Practical implications: The performed experimental studies help to take a more reasonable approach to cleaning the inner cavity of gas gathering pipelines with foams and to predict in advance the effect of the foam expansion ratio on the hydraulic efficiency of gas gathering pipelines. Originality/value: The experimental studies on the effect of foam expansion ratios on the hydraulic efficiency of gas gathering pipelines are original.
    Źródło:
    Journal of Achievements in Materials and Manufacturing Engineering; 2021, 105, 2; 61--77
    1734-8412
    Pojawia się w:
    Journal of Achievements in Materials and Manufacturing Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of residual stresses for multi-layer circumferential welds of oil and gas pipelines
    Autorzy:
    Kychma, Andrii
    Predko, Rostyslav
    Powiązania:
    https://bibliotekanauki.pl/articles/329392.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    pipelines
    circumferential welds
    residual stresses
    pressure reservoir
    hydraulic testing
    rurociąg
    naprężenia własne
    spoiny spawane
    zbiornik ciśnieniowy
    badania hydrauliczne
    Opis:
    The article presents results of investigation of residual stresses for multi-layer circumferential welds of oil and gas pipelines. The research was carried out on a designed and manufactured testing equipment for the experimental determination of the stress state parameters in the zone of multi-layer welded joints of pipe segments with the external diameter of 1020 mm and the wall thicknesses of 9.5 mm, of 14 mm, and of 22 mm which were made of carbon steels of different quality (13G1S, 13G1SU, 17G1S and 17G1SU). Determination of residual stresses in the zone of multi-layered circumferential welds of pipe segments was carried out by means of the method by the electronic speckle-interferometry and by the method of magnetoelasticity. On the basic of analysis of the obtained graphic dependences, the recommendations for engineering practice are suggested.
    Źródło:
    Diagnostyka; 2019, 20, 4; 11-18
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developing a set of measures to provide maximum hydraulic efficiency of gas gathering pipelines
    Autorzy:
    Volovetskyi, V. B.
    Uhrynovskyi, A. V.
    Doroshenko, Ya. V.
    Shchyrba, O. M.
    Stakhmych, Yu. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/368779.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    well
    gas
    gas gathering pipeline
    hydraulic efficiency
    cleaning the inner cavity of pipelines
    studnia
    gaz
    rurociąg
    sprawność hydrauliczna
    Opis:
    Purpose: The purposes of this article are to study the effective ways of increasing the hydraulic efficiency of gas gathering pipelines of the Yuliivskyi oil and gas condensate production facility (OGCPF); to calculate the operation efficiency of gas gathering pipelines of the Yuliivskyi OGCPF and develop a set of measures to monitor their condition and improve their hydraulic characteristics; to investigate the technology of cleaning the inner cavity of flowlines of gas-condensate wells with foam, to perform the feasibility study on the prospects of its application in practice. Design/methodology/approach: The technology of cleaning the inner cavity of flowlines of gas-condensate wells with foam was investigated to objectively evaluate its application and determine the effectiveness of this measure. The research was carried out within the framework of research and development work by the specialists of the Ukrainian Scientific Research Institute of Natural Gases. Findings: The results of production studies showed that due to cleaning the flowlines of gas-condensate wells (No.85 and No.60) from the accumulation of liquid, the coefficients of their hydraulic efficiency increased by 12% and 7%, respectively. Measures taken to clean the inner cavity of the flowlines from liquid have proven their efficiency and can be recommended for other flowlines of wells at other production fields. Research limitations/implications: Based on the characteristics of gas gathering pipelines, it is reasonable to conduct experimental studies on the use of the proposed technology of cleaning the inner cavity with foam in the case of increasing its multiplicity. Practical implications: Using the wells of the Yuliivske oil and gas condensate field as case studies, the operating parameters were measured and the pressure losses along the length of the flowlines were calculated. According to the results of calculations at two wells (No.85 and No.60), a significant excess of the actual value of the flow friction characteristic over the theoretical value was established. To reduce excessive pressure losses due to the presence of liquid and improve the hydraulic characteristics of the wells, their inner cavities were cleaned using foam with the expansion ratio from 40 to 100. Originality/value: It is important to note that the advantages of foam piston include: ease of use, no occurrence of hydraulic shocks and preventing stuck during movement in the gas pipeline, application in both straight and inclined sections, no wear of the elements of the cleaning equipment, a rather efficient cleaning of gas pipelines.
    Źródło:
    Journal of Achievements in Materials and Manufacturing Engineering; 2020, 101, 1; 27-41
    1734-8412
    Pojawia się w:
    Journal of Achievements in Materials and Manufacturing Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A smart review on the gas transportation model of coalbed methane gas based on the optimized pipeline network
    Autorzy:
    Talapatra, Akash
    Inan Chowdhury, Abed
    Ujjaman, Md. Shourov
    Powiązania:
    https://bibliotekanauki.pl/articles/95237.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    coalbed methane
    gas transportation
    pipelines network
    hydraulic calculation
    layout optimization
    metan z pokładów węgla
    transport gazu
    sieć rurociągów
    obliczenia hydrauliczne
    optymalizacja układu
    Opis:
    Coalbed methane is extracted from the adsorbed state in coal seams with lower pressure and production rate. In previous studies, researchers only focused on the methods that were developed for making a relationship between the underground production rate and surface flow rate without any type of optimization procedure. In this study, the main purpose is to do a review on finding out of surface layout plan to optimize the maximum gas flow rate by developing an improved pipeline network. The more the optimization of the layout plan for designing pipeline network, the lower the amount of investment need to provide. Here, a mathematical model is proposed for the gas transportation based on the hydraulic and thermodynamic calculations of the pipeline network. Not only that, but also the filtration mechanism of depressurization and desorption for the gas flow through pipe section are evaluated here. After that, the pressure drop and pipeline efficiency are explored to find out the best design of pipeline network from the observed results. Finally, based on this study, many uncertainties can be reduced associated with the installation of pipeline network for gas transportation.
    Źródło:
    Journal of Mechanical and Energy Engineering; 2019, 3, 2; 169-175
    2544-0780
    2544-1671
    Pojawia się w:
    Journal of Mechanical and Energy Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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