Vpliv čistoče olja na hidravlični 4/3 potni ventil

diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo

Domen Barbiš (Avtor), Franc Majdič (Mentor)

Povzetek

Hidravlični sistemi so zelo pogosti v industriji in ostalih tehničnih področjih. Za krmiljenje se najpogosteje uporabljajo drsniški potni ventili, ki pa na krmilnih batih nimajo tesnil. To povzroča notranje puščanje. Stabilnost puščanja je zelo odvisna od čistoče hidravlične kapljevine. Diplomska naloga obravnava vpliv čistoče hidravličnega olja na trajnost in volumetrični izkoristek obravnavanega drsniškega potnega ventila. V okviru diplomske naloge je bilo zasnovano in sestavljeno hidravlično preizkuševališče, na katerem smo izvedli tri trajnostne teste hidravličnega 4/3 potnega ventila. Pri posameznem testu smo v hidravlično olje dodali različno količino testnega prahu MTD, ki je priporočen za izvedbo pospešenega testiranja. Ventil smo preklapljali s frekvenco 4 Hz do doseženih 2 milijona ciklov. Na ventilu smo merili notranje puščanje A in B voda s pomočjo dveh merilnih valjev in štoparice. Po izvedenih testih smo prerezali ohišja in pogledali obrabo drsnih površin ohišij in batov testiranih ventilov. Ugotovili smo, da se obrabljenost površin v notranjosti ventila s povečevanjem količine testnega prahu MTD v hidravlični kapljevini vidno povečuje, kar se opazi kot povečevanje notranjega puščanja ventila.

Ključne besede

diplomske naloge;hidravlika;preizkuševališče;čistoča olja;potni ventili;trajnostni testi;testni prah;obraba drsnih površin ventila;

Podatki

Jezik:	Slovenski jezik
Leto izida:	2022
Tipologija:	2.11 - Diplomsko delo
Organizacija:	UL FS - Fakulteta za strojništvo
Založnik:	[D. Barbiš]
UDK:	532.5+532.1:621.22(043.2)
COBISS:	123256067
Št. ogledov:	18
Št. prenosov:	5
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Angleški jezik
Sekundarni naslov:	Impact of oil cleanliness on hydraulic 4/3 directional control valve
Sekundarni povzetek:	Hydraulic systems are very common in the industry and other technical fields. The most used control valves are sliding directional control valves, which have no seals on the control pistons. This leads to internal leakage. The stability of the leakage is strongly dependent on the purity of the hydraulic fluid. The work deals with the influence of the purity of the hydraulic oil on the service life and volumetric efficiency of the sliding directional control valve considered. As part of the work, a hydraulic test bench was designed and set up on which three service life tests of a hydraulic 4/3 directional control valve were performed. For each test, a different amount of the MTD test powder recommended for accelerated tests was added to the hydraulic oil. The valve was cycled at a frequency of 4 Hz until 2 million cycles were reached. At the valve, the internal leakage of the A and B lines was measured using two graduated cylinders and a stopwatch. After the tests were performed, the housings were cut open and the sliding surfaces of the housings and pistons of the tested valves were examined for wear. The research shows that as the amount of MTD test powder in the hydraulic fluid increases, the wear of the surfaces inside the valve increases visibly, which is seen as an increase in valve internal leakage.
Sekundarne ključne besede:	thesis;hydraulics;testing ground;oil cleanliness;directional control valves;sustainability tests;
Vrsta dela (COBISS):	Diplomsko delo/naloga
Študijski program:	0
Konec prepovedi (OpenAIRE):	1970-01-01
Komentar na gradivo:	Univ. v Ljubljani, Fak. za strojništvo
Strani:	XXII, 58 str.
ID:	16382125