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Effect of blade coating on a centrifugal pump operation under sediment-laden water flow
ID Wang, Yong (Avtor), ID Zhang, Zilong (Avtor), ID Chen, Jie (Avtor), ID Liu, Houlin (Avtor), ID Zhang, Xiang (Avtor), ID Hočevar, Marko (Avtor)

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Izvleček
Applying a high strength coating on a blade's surface could significantly prolong the service life of a centrifugal pump under sediment-laden water flow because of its protection. To explore the effect of blade coating, the characteristics of energy, vibration and pressure fluctuation of a centrifugal pump (the specific speed (ns) is 81.46) with different polyurethane coating thickness coefficients were experimentally studied under sediment-laden water flow. Keeping the blade outlet angle, blade inlet angle and blade shape unchanged, the head H and efficiency [eta] under both sediment-laden flow and clear water flow decrease significantly as the coating thickness coefficient increases. The axis rotating frequency and blade passing frequency are the main excitation frequencies of the pump vibration velocity amplitude and outlet pressure fluctuation. The vibration velocity amplitude and outlet pressure fluctuation at the frequency of 1 BPF are the largest. At the frequency of 1 axis rotating frequency, they are the second in all cases. The peak values of both vibration velocity amplitude and outlet pressure fluctuation are proportional to the coating thickness coefficient. An analysis was performed for several increasing coating thicknesses, corresponding to coating coefficients from K0 to K3. When the coating thickness coefficients are K0, K1, and K2, the peak value of vibration velocity amplitude under sediment-laden flow is larger than that under clear water flow, but the very small difference between them undercoating thickness coefficient K3. The peak values of pressure fluctuations under different flow rates decrease first and then increase with the increasing coating thickness coefficient, and lowest points are all located at the coating thickness coefficient K1

Jezik:Angleški jezik
Ključne besede:blade coating, vibration, pressure fluctuation, sediment-laden flow, centrifugal pump
Vrsta gradiva:Članek v reviji (dk_c)
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Leto izida:2020
Status objave pri reviji:Objavljeno
Verzija članka:Založnikova različica članka
Št. strani:Str. 591-601
Številčenje:Vol. 66, no. 10
PID:20.500.12556/RUL-121676 Povezava se odpre v novem oknu
UDK:621.67(045)
ISSN pri članku:0039-2480
DOI:10.5545/sv-jme.2020.6707 Povezava se odpre v novem oknu
COBISS.SI-ID:33660163 Povezava se odpre v novem oknu
Datum objave v RUL:22.10.2020
Število ogledov:400
Število prenosov:241
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Strojniški vestnik
Skrajšan naslov:Stroj. vestn.
Založnik:Zveza strojnih inženirjev in tehnikov Slovenije [etc.], = Association of Mechanical Engineers and Technicians of Slovenia [etc.]
ISSN:0039-2480
COBISS.SI-ID:762116 Povezava se odpre v novem oknu

Sekundarni jezik

Jezik:Slovenski jezik
Naslov:Učinek prevlek lopatic na delovanje centrifugalnih črpalk pri toku z usedlinami
Ključne besede:centrifugalna črpalka, obraba, prevleka lopatic, vibracije, fluktuacije tlaka, tok z usedlinami

Projekti

Financer:Drugi - Drug financer ali več financerjev
Program financ.:National Natural Science Foundation of China
Številka projekta:51979126

Financer:Drugi - Drug financer ali več financerjev
Program financ.:National Natural Science Foundation of China
Številka projekta:51779106

Financer:Drugi - Drug financer ali več financerjev
Program financ.:Priority Academic Program Development of Jiangsu Higher Education Institutions, Ministry of Education, Xihua University
Številka projekta:szjj2016-068

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0401
Naslov:Energetsko strojništvo

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