Wszystkie pola: pipe - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Burnishing treatment of the faying surface of the pipe flange
Autorzy:: Starosta, W.
Powiązania:: https://bibliotekanauki.pl/articles/246629.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: burnishing
pipe flange
flange face
roughness
multiple regression
Opis:: On ships for connecting pipes in seawater installations, fire and other installations and for joining pipes to fittings or receivers, flange-type couplings are often used. It is important to ensure tightness between pipe flanges (ASME). If the system pressure does not exceed 1.6 MPa, “open” flange packing using flat gasket rings is used. Rubber, textolite, polyvinyl chloride or metals and alloys with good plastic properties (e.g. aluminum, copper, Monel alloy, Armco iron) can be used as a sealant material (depending on pressure in installation). The tightness of the joint determines the quality (geometric structure) of the surface of the flange at the contact point with the gasket. Reduced roughness ensures even distribution of surface mounting pressures on flange joint gasket. This article deals with the assessment of the use of burnishing as a finishing treatment for flange faces and the selection of rolling parameters. Samples used for the tests were made of S235J2 carbon steel. Burnishing treatment was done with the SKUV20 tool. The working element of the tool was in the shape of a roller. Burning was performed using the following parameters: the burnishing force (Fn) – 600 N, 800 N and 1000 N; Feed rate (f): 0.08 mm/rev, 0.13 mm/rev, 0.24 mm/rev; the speed of burnishing (vn) – for a diameter of 55 mm – was 45 m/min, 65 m/min, 78 m/min. The research was carried out on the basis of trivalent plan Hartley. As the output variables (dependent variables), the roughness reduction index (KRa) and the (Su) were adopted. Based on the multiple regression analysis, it was found that the greatest impact on reducing roughness and surface hardening of burnished material has burnishing force. The dependence between dependent variables and Fn is proportional. The effect of the burnishing speed (vn) on the values of KRA and Su parameters is statistically insignificant. Machining of the active surface of the pipe flanges should be carried out with a burnishing force of 1 kN, a feed rate of 0.08 mm/rev and a burnishing speed of 45 m/min.
Źródło:: Journal of KONES; 2017, 24, 4; 297-303
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The choice of motor : transmission installation for the pipe layer
Autorzy:: Shevchyuk, V. P.
Shekhovtsov, V. V.
Krivosheev, N. V.
Powiązania:: https://bibliotekanauki.pl/articles/241544.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: motor – transmission installation
pipe layer
Opis:: The results of research, which applied character, for an industrial complex, will allow resolving topical and important issues of increase of efficiency of operation of park of special equipment in the course of a production activity, at stages of a project and preparatory work are given in article. In previous articles [1, 2, 3, 4, 5] proposed mathematical model of determination of productivity of the machine -tractor unit (MTU) with industrial function is presented in article during the pipelaying works. The mathematical model coordinates all key technical parameters of the pipelayer and the parameters defining service conditions in uniform dependence. The method of "minimization of duration of a running cycle of the machine" is put in mathematical model, as duration of a running cycle is one of generalizing indicators of technical and operational efficiency of MTU. In other words, productivity of the pipelayer is in inverse relationship with a duration of a running cycle, the less time is spent for pipeline laying, the productivity and efficiency of construction is higher. Various ways of laying of the pipeline define boundary conditions, which form some private models.
Źródło:: Journal of KONES; 2015, 22, 1; 285-288
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Modelling of the inlet system and examination of the effect of inlet pipe length on engine operation parameters
Autorzy:: Lisowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/242249.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: inlet pipe
wave phenomena
modelling
power
torque
Opis:: In the paper are presented assumptions for developing a computational model of engine inlet system. The aim of developing an inlet system model will be determination of the effect of different factors on the value of engine filling coefficient and, what is connected with that, on the parameters of its operation. Intention of the author is that a model developed will be of developmental character and would be capable of being expanded by further components enlarging the range of its applications. In the paper are also presented the results of test bed examinations for the SW-680 engine with the inlet system enabling modiflcation of the length of inlet pipes. Findings are presented in the form of external characteristics where the effect of inlet pipe length on such parameters like power or torque, as well as on the rotational speed at which a maximum torque, is visible. The effect of inlet pipe length on torque rotational speed can be of significant importance in case of a possibility ofshaping the engine characteristic and matching the area of engine operation with vehicle operating conditions, which is presented on universal characteristics in the form of resistance-to-motion lines. Test bed examinations have also served a purpose of verifying the model developed. The author is aware of the fact that the model presented requires further development. After considering certain corrections, it will be possible to develop a working computer programme being of use in simulation tests for the inlet systems of different engines.
Źródło:: Journal of KONES; 2009, 16, 2; 271-278
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Simulation analysis of the effect of inlet pipe diameter on the cylinder filling of compression-ignition engine
Autorzy:: Lisowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/247788.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: inlet pipe diameter
in-cylinder mass
numerical model
inlet system
simulation
combustion engines
Opis:: In this paper are presented the basic problems accompanying the flow of charge through compression-ignition engine inlet system. The flow of medium through inlet pipe to cylinder was assumed to be one-dimensional and described with mass, momentum and angular momentum conservation eąuations and energy consLrvation law. On the other hand, a zero-dimensional model described by mass-energy conservation equations was used to determine parameters of the medium in total cylinder volume. Simulations were carried out with the use of numerical programme in which McCormack's explicit method was applied to solve differential equations describing the flow of charge in inlet system. The McCormack explicit technique was used due to the fact that an earlier attempt at solving a numerical problem with the method of lines had not yielded desired effects in view of high instability. Simulation aimed at determining the mass of air remaining in engine cylinder after inlet valve closure. Simulation results are presented in the form of in-cylinder air mass versus crank angle characteristics for different inlet pipe diameters. The study results are also presented in the form of a summary table and a summary diagram, the latter enabling a comparison of results for different inlet pipe diameters.
Źródło:: Journal of KONES; 2010, 17, 4; 295-302
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Conditions in exhaust pipe in CI engine in light of monitoring of catalytycal converter
Autorzy:: Rychter, M.
Powiązania:: https://bibliotekanauki.pl/articles/242319.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: catalytic converter
emission
monitor
pressure
sensor
temperature
Opis:: The paper presents main method of monitoring catalytically comerter in CI engines. In this paper presents modified test bedwitch used to testes of exhaust pipe in light of determination possibility of application measurement probę to determine of NOx concentration. Those investigation could help to evaluate of possibility catalytically converter monitoring within the framework on board diagnostic systems The OBD system is an integral part of the vehicle connected with the engine control system, Nowadays the investigation on the on board diagnostic systems in their different applications are one of the basic problems that the OBD method is concerned with. The implementation of the investigation method for the OBD system efficiency is one of the main questions of the matter in hand. Diagram of modification exhaust pipe with installed catalytically converter in test bed and present of measurement points, distribution of temperature in measurement point TO-T8 exhaust pipe of testing engine without catalytically converter during realization ESC test, distribution of temperature in measurement point TO-T8 exhaust pipe of testing engine with 200 cpsi catalytically converter during realization ESC test, distribution of pressure in measurement point pO-p8 exhaust pipe oftesting engine without catalytically converter during realization ESC test, distribution of temperature in measurement point pO-p8 exhaust pipe of testing engine with 200 cpsi catalytically converter during realization ESC test are presented in the paper.
Źródło:: Journal of KONES; 2009, 16, 2; 401-406
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Impact of rise of exhaust resistance at torque and angular speed of two-stroke engine
Autorzy:: Dereszewski, M.
Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/245462.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diagnostics
diesel engine
exhaust pipe resistance
torque
angular speed
Opis:: It is assumed that elements of Exhaust Gases Cleaning Systems creates additional resistance along fumes duct and can affect energetic process of combustion. In the paper are presented results of researches aimed on detection and recognition of dumping effect in the exhaust pipeline using devices dedicated for engine’s torque and angular speed measurement. The experiment was carried out in test stand of Gdynia Maritime University; equipped with one-cylinder, low speed engine working in two-stroke mode. Effect of increasing of gas flow resistance was achieved by installation of shutters in cross-section of exhaust pipe. The shutters diminished active flow „window“ for 50% of normal crossection area of the exhaust pipe The plan of measurements encompasses registration of Instantaneous Angular Speed of the engine’s shaft and parallel registration of Instantaneous Value of Shaft Torsion, what reflect fluctuation of torque. Value of angular speed and toque enables exact calculation of power produced by the engine. Experiment included measurements at different levels of engine’s load and with changes of mean rotational speed. Angular speed and shaft’s torsion were measured and recorded using system ETNP-10 which is based on optical sensor and set of toothed discs. That method gives high accuracy of angular speed and torsion measurement. Results of experiment are presented as difference of related curves of values’ variations of angular speed and torsion occurring at the propulsion shaft connecting the engine and the water brake.
Źródło:: Journal of KONES; 2015, 22, 4; 87-93
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Analysis of influence of temperature on wellbore tubing dimensions
Autorzy:: Kwietniewski, M.
Miedzińska, D.
Niezgoda, T.
Małek, E.
Powiązania:: https://bibliotekanauki.pl/articles/241587.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: wellbore
tubing
heat
thermal extension
pipe
steel P110
thermal analyses
finite element method
Opis:: The construction of exploitation wellbore is complex, it consists of several columns of pipelines which perform different tasks. It is very important to preclude flow of reservoir fluid between wellbore and ground. Tubing is a kind of a pipeline which is very important element of oil and gas wellbore construction. It allows to transport fracturing medium between wellbore station and underground deposit. Manufacture quality and correct mounting of tubing in the wellbore are the key for effective exploitation. However, during work those pipes are subjected to changeable loads which results in temperature value changes for example. That temperature variations can be caused by cold medium transport inside the pipe. In the paper, analyses of influence of temperature value changes on the tubing shrinkage were presented. Numerical analyses of section of pipe vertically located in the wellbore and loaded with changeable temperature were carried out. The calculations were made with the use of coupled structural and thermal analyses. Received results of tubing shrinkage for fragment of pipe were adapted to the column of pipes of 3000 m length. Results of numerical analyses were verified with the analytical calculations. Material of tubing was assumed as steel P110 which is often applied in the wellbore construction.
Źródło:: Journal of KONES; 2016, 23, 4; 269-273
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The effect of length of high pressure pipes on injection process in common rail system of diesel engine
Autorzy:: Ustrzycki, A.
Kuszewski, H.
Woś, P.
Powiązania:: https://bibliotekanauki.pl/articles/247609.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: common rail
fuel injection
injection control
high-pressure pipe
Opis:: The storage supply systems of Common Rail type are characterized by high possibilities in shaping the rate of injection. The possibility to implement multi-injection at high pressure, easiness of adapting the system to the engine, relatively easiness of compensation the arrangement of injector parameters resulting from work tolerance, as well as easiness of making changes in the electronic engine controller enabling the production of engines with various performances, cause that type of these solutions currently are widely used injection systems in diesel engines. Injection system should be characterized above all by high precision fuel dosing into engine cylinders, the accuracy in starts controlling of individual phase of injection, repeatability and reliability and durability, as well as the up keep of these parameters for long time during operating duration. Fuel injection system works in difficult conditions resulting from high pressure, vibrations, electromagnetic interference affecting electronic executive systems and high temperatures. Especially the injector and injection pipes are open to high temperatures. The dimensions of used elements are also important. The article presents selected results concerning the effect of the length of high-pressure pipes on injection process parameters such as fuel amount, overflow in injector, and the fuel pressure course in injection pipe in front of electromagnetic injector socket. The study was conducted with test stand with electronic measurement system of fuel amount. The tests were made at different pressures in the rail and for different durations of the injector opening.
Źródło:: Journal of KONES; 2010, 17, 3; 477-482
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Analyses of temperature and pressure condition in CI engines exhaust pipe in light of application NOx sensor to determine of catalytic converter efficiency
Autorzy:: Rychter, M.
Powiązania:: https://bibliotekanauki.pl/articles/243619.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
internal combustion engine
catalytic converter
diagnostic system
Opis:: The development of a catalytic converter required an analysis of selected physical parameters of the supports. This resulted from the necessity to assume given parameters of the supports applied in the tests in exhaust gas environment in the CI engines. An analysis of ionic conductors, which constitutes the basic solution in voltage sensors providing signals through NOx electrocatalysis, is presented. The aim of this paper is to determine the basis for the monitoring of catalytic converters in compression ignition engines by the emission level of a selected exhaust gas component as a diagnostic signal. The emission of NOx has been taken as the basis. This required the development of a specialized system allowing the reduction of NOx and obtaining of a diagnostic signal reflecting the level of the said reduction. This paper includes same results of testing and possibilities monitoring of prototype catalytic converter on the test bed. On the basis of the performed examinations and obtained test results the following conclusions can be drawn: the analysis of the NOx concentrations in exhaust gas from the compression-ignition engine can be based on the indications of the voltage probes with the modified electrodes of the oxygen pump, the application of the reduction conditions in the voltage probes using the nitrogen oxides reduction by the electro-catalytic way depends on the exhaust gas parameters, the values of which change depending on the rotational crankshaft speed and engine load, and for this reason obtaining the diagnostic signal for the whole engine operation range is impossible, the control of the correctness of the catalyst operation regarding the nitrogen oxides reduction can be realised for the defined operating parameters of the tested engine, for phases VIII and X of the ESC test the reheating the test probe installed before the catalyst was unnecessary, owing to the high exhaust gas temperature (737-759°C).
Źródło:: Journal of KONES; 2008, 15, 3; 451-463
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Implementation of modern electronic subsets under construction and control with a wireless inspection vehicle
Wykorzystanie nowoczesnej elektroniki w budowie i sterowaniu bezprzewodowym pojazdem inspekcyjnym
Autorzy:: Filipek, P.
Kamiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/242069.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mobilny robot inspekcyjny
kanał wentylacyjny
schemat blokowy
sterowanie radiowe
czujniki
mobile inspecting robot
ventilation pipe
block scheme
radio steering
sensors
Opis:: This article shows electronic block structure and individual elements of the cordless inspecting vehicle to air ducts. Modern electronics in the robot is first of all efflciency, fast, 32-bits the processor, radio steering, the cordless, color camera and sensor s measuring all essential parameters in an air duet. Additionally, sensor s of environmental conditions were applied (the temperature, the humidity and detecting thepresence of gas). Processor control administrative elements by entrance keys. Administrative elements are electric engines: chassis, ann, camera tripod and helping vertical wheel. Expect engines processor also switch on buzzer, LED light and halogen. Cordless camera with microphone is independent district reinforced only from robot accumulator. Built robot „ the Inspector l" is a competitive solution to industrial robots of this type applied in the industry. The equipment of environmental sensors delivers to the operator information on conditions occurring in the pipe (temperature, moisture, presence ofv gas, air flow direction, beam intensity etc.). Especially, block scheme of the inspecting system "Inspector l ", block scheme of the operational panel of the system "Inspector l", sensor of the flow and direction of air are presented in the paper.
W artykule przedstawiono i omówiono elektroniczną strukturę blokową oraz poszczególne elementy bezprzewodowego pojazdu inspekcyjnego do przewodów wentylacyjnych. Nowoczesna elektronika robota to przede wszystkim wydajny, szybki, 32-bitowy procesor, radiowe sterowanie, bezprzewodowa, kolorowa kamera oraz czujniki mierzące wszystkie niezbędne parametry w kanale wentylacyjnym. Dodatkowo, zastosowano czujniki warunków środowiskowych (temperatura, wilgotność oraz wykrywanie obecności gazu).Procesor steruje elementami wykonawczymi za pomocą kluczy wyjściowych. Elementami wykonawczymi są w większości silniki elektryczne: podwozia, ramienia, pozycjonera kamery i wspomagającego koła pionowego. Oprócz silników, procesor zalącza buzzer oraz oświetlenie LED i halogen. Bezprzewodowa kamera z mikrofonem jest obwodem niezależnym jedynie zasilanym z akumulatora robota. Budowany robot ,,Inspektor l" wyposażony w wiele nowoczesnych podzespołów elektronicznych oraz nowatorskich rozwiązań konstrukcyjnych stanowi wyśmienite narzędzie do inspekcji i czyszczenia kanałów wentylacyjnych. Jest on jednocześnie rozwiązaniem konkurencyjnym do fabrycznych robotów tego typu stosowanych w przemyśle.
Źródło:: Journal of KONES; 2009, 16, 3; 107-114
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Structural solutions of driving system and sets remotely controlled vehicle to the inspection of ventilating pipes
Rozwiązania konstrukcyjne układu jezdnego i podzespołów zdalnie sterowanego pojazdu do inspekcji kanałów wentylacyjnych
Autorzy:: Filipek, P.
Kamiński, T.
Powiązania:: https://bibliotekanauki.pl/articles/245751.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mobilny robot inspekcyjny
wspomagające pionowe koło dociskowe
kanał wentylacyjny
konstrukcja układu jezdnego
ruchome ramię robota
pozycjoner kamery
mobile inspecting robot
ventilation pipe
driving system construction
mobile robot arm
helping vertical tighten wheel
camera tripod
Opis:: This article shows function and construction assumptions of mobile, wireless inspection-cleaning robot of ventilating pipes. Robot has got cordless colour camera. Robot has got many different sensors (flow and direction of air, gas, humidity and temperature) it can exactly diagnosed canal in respect of efficiency and presence of fire or gas. Robot arm is equipped in four changeable endings: clutch with pincer, taking in shovel, two traverse brushes (deaning ventilation canals about square or rectangle section) and brush about oblong pivot (cleaning ventilation canals about circled section). Thanks to changeable endings robot can fast become inspector from a cleaning machine. Helping vertical tighten wheel is a innovation introduced to the robot construction, in result it increases wheels tighten to the ground. It will decrease wheel skid and it make possible to drive under larger inclination or in vertical canal. Tighten power vertical wheel to over head partition of ventilation canal is regulated by the tighten sensor. This article shows modelling construction elements of the robot. In certain domains work, the elaborated robot exceeds with functional quality industrial robots by using in it several environmental sensors and innovations.
Artykuł przedstawia założenia funkcyjne i konstrukcyjne mobilnego, bezprzewodowego robota do inspekcji i czyszczenia kanałów wentylacyjnych. Robot wyposażony w kolorową kamerę przekazuje obraz bezprzewodowo. Wzbogacony o różne czujniki (min. przepływu i kierunku powietrza, gazu, wilgotności i temperatury) może dokładnie zdiagnozować kanał pod kątem sprawności oraz obecności gazu lub ognia. Ramię robota jest wyposażone w cztery zamienne końcówki: chwytak ze szczypcami, łyżkę nabierającą, dwie szczotki poprzeczne (czyszczenie kanałów o przekroju prostokątnym lub kwadratowym) oraz szczotka o osi podłużnej (czyszczenie kanałów o przekroju kołowym). Dzięki wymiennym końcówkom robot może szybko przeistoczyć się z inspektora w maszynę czyszczącą. Wspomagające pionowe koło dociskowe jest innowacją wprowadzoną do konstrukcji robota „Inspektor l" w celu zwiększenia docisku kół do podłoża. Zapewni to zmniejszenie się poślizgu kół oraz możliwość jazdy pod większym nachyleniem lub w kanale pionowym. Siła docisku koła pionowego do górnej ścianki kanału wentylacyjnego jest regulowana za pomocą umieszczonego w konstrukcji czujnika nacisku. W artykule przedstawiono zamodelowane elementy konstrukcyjne robota.
Źródło:: Journal of KONES; 2009, 16, 4; 75-82
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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