20.500.12556/RUL-182009 Analiza in optimizacija tesnjenja aksialne batne črpalke za črpanje nafte iz velikih globin Analysis and optimization of sealing in an axial piston pump for deep-well oil extraction Magistrska naloga obravnava analizo tesnjenja med batom in ohišjem aksialne batne črpalke za črpanje nafte z namenom izboljšanja tesnjenja. V črpalki prihaja do neželenega mešanja mazalnega olja in naftne mešanice. Metodologija vključuje pregled literature, konstruiranje in izdelavo namenskega preizkuševališča ter dinamična testiranja različnih tesnil, hrapavosti in viskoznosti pri načinih tesnjenja olje/zrak in olje/voda. Prvi rezultati pokažejo, da je pri testiranju olje/zrak puščanje olja praktično zanemarljivo, medtem ko pri testiranju olje/voda prihaja do bistveno večje lekaže; višja hrapavost in viskoznost povečujeta prenos medija. Izkaže se, da gre verjetno za prenos medija prek mikroskopskih por na batu. Ugotovili in pokazali smo, da PTFE tesnila dobro tesnijo vodo, PU tesnila pa dobro tesnijo olje. Uporaba večstopenjskega tesnjenja ali implementacija vmesnega zračnega žepa pomembno izboljša tesnilno zmogljivost. S praktičnimi eksperimenti na namenskem preizkuševališču smo dokazali, da smo z izbiro kombinacije teflonskih tesnil bistveno zmanjšali puščanje olja preko tesnil, prav tako pa smo pokazali, da se z izbranimi kombinacijami tesnil veliko bolje omeji vstop vode v oljno komoro, kar je bil naš osrednji cilj. Predlagani so tudi potencialni predlogi predelave ohišja aksialne batne črpalke, ki bi omogočile uporabo predlaganih setov tesnil. This master’s thesis addresses the analysis of sealing between the piston and the housing in an axial piston pump used for oil extraction, with the aim of improving sealing performance. Undesired mixing of lubricating oil and the crude oil mixture occurs within the pump. The methodology includes a literature overview, the design and manufacture of a dedicated test rig, and dynamic testing of various seals, at various surface roughness levels, and at various fluid viscosities under oil/air and oil/water sealing conditions. The initial results show that during oil/air testing, oil leakage is practically negligible, whereas significantly higher leakage occurs during oil/water testing; increased surface roughness and viscosity were found to increase medium transfer. The findings indicate that the transfer most likely occurs through microscopic pores in the piston material. It was established that PTFE seals provide effective water sealing, while PU seals perform well in oil sealing applications, and that the use of multi-stage sealing or the implementation of an intermediate air pockets significantly improves sealing performance. Practical experiments conducted on the dedicated test rig demonstrated that the selected combination of PTFE seals substantially reduces oil leakage across the sealing system and significantly limits water intrusion into the oil chamber, which was the primary objective of this study. Potential design modifications of the axial piston pump housing are also proposed to enable the implementation of the recommended sealing configurations. aksialno tesnjenje recipročno tesnjenje črpanje nafte tesnjenje kapljevin preizkuševališče tesnila axial sealing recoprocating sealing oil extraction liquid sealing test rig seals true false false [B. Božič] Slovenski jezik Angleški jezik Magistrsko delo/naloga 2026-04-22 08:30:25 2026-04-22 08:30:34 2026-04-23 12:08:30 0000-00-00 00:00:00 2026 0 Ljubljana 0 XXII, 52, [10] str. 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 622.276:62-762(043.2) 285462 276244483 46826.pdf 46826.pdf 1 45028BAEBFE13479DE1C6AAF4C1A13CA 3860564243a43796b9cc72126d192a3370ff77735e7f8ae671f0d6d40d9a86ca 85b72c68-3e14-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=232874 Fakulteta za strojništvo 0 0 0