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[132030] Artykuł:

Studies on Improving Seals for Enhancing the Vibration and Environmental Safety of Rotary Machines

Czasopismo: Vibration   Tom: 7, Zeszyt: 3, Strony: 1-20
ISSN:  2571-631X
Opublikowano: 2024
Liczba arkuszy wydawniczych:  1.50
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Do oświadczenia
nr 3		 Grupa
przynależności		 Dyscyplina
naukowa		 Procent
udziału		 Liczba
punktów
do oceny pracownika		 Liczba
punktów wg
kryteriów ewaluacji
Zhifei Yuan Niespoza "N" jednostkiInżynieria środowiska, górnictwo i energetyka14.00.00  
Serhii Shevchenko Niespoza "N" jednostkiInżynieria środowiska, górnictwo i energetyka14.00.00  
Mykola Radchenko Niespoza "N" jednostkiInżynieria środowiska, górnictwo i energetyka14.00.00  
Oleksandr Shevchenko Niespoza "N" jednostkiInżynieria środowiska, górnictwo i energetyka14.00.00  
Anatoliy Pavlenko orcid logo WiŚGiEKatedra Fizyki Budowli i Energii Odnawialnej*Takzaliczony do "N"Inżynieria środowiska, górnictwo i energetyka1420.002.86  
Andrii Radchenko Niespoza "N" jednostkiInżynieria środowiska, górnictwo i energetyka14.00.00  
Roman Radchenko Niespoza "N" jednostkiInżynieria środowiska, górnictwo i energetyka14.00.00  

Grupa MNiSW:  Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A)
Punkty MNiSW: 20

Pełny tekstPełny tekst     DOI LogoDOI    
Słowa kluczowe:

gap seals  hydromechanical system  vibrations  frequency characteristics  stability 

Keywords:

gap seals  hydromechanical system  vibrations  frequency characteristics  stability 


Streszczenie:

There is a constant demand for higher equipment parameters, such as the pressure of a
sealing medium and shaft rotation speed. However, as the parameters increase, it becomes more
difficult to ensure hermetization efficiency. The rotor of a multi-stage machine rotates in non-contact
seals. Seals’ parameters have a great influence on vibration characteristics. Non-contact seals are
considered to be hydrostatodynamic supports that can effectively dampen rotor oscillations. The
force coefficients of gap seals are determined by geometric and operational parameters. A purpose
ful choice of these parameters can influence the vibration state of the rotor. It is shown for the first
time that the initially dynamically flexible rotor, in combination with properly designed seals, can
become dynamically rigid. Analytical dependencies for the computation of the dynamic character
istics are obtained. The resulting equations make it possible to calculate the radial-angular vibra
tions of the rotor of a centrifugal machine in the seals and construct the amplitude–frequency char
acteristics. By purposefully changing the parameters of non-contact seals, an initially flexible rotor
can be made rigid, and its vibration resistance increases. Due to this, the environmental safety of
critical pumping equipment increases.



Abstract:

There is a constant demand for higher equipment parameters, such as the pressure of a
sealing medium and shaft rotation speed. However, as the parameters increase, it becomes more
difficult to ensure hermetization efficiency. The rotor of a multi-stage machine rotates in non-contact
seals. Seals’ parameters have a great influence on vibration characteristics. Non-contact seals are
considered to be hydrostatodynamic supports that can effectively dampen rotor oscillations. The
force coefficients of gap seals are determined by geometric and operational parameters. A purpose
ful choice of these parameters can influence the vibration state of the rotor. It is shown for the first
time that the initially dynamically flexible rotor, in combination with properly designed seals, can
become dynamically rigid. Analytical dependencies for the computation of the dynamic character
istics are obtained. The resulting equations make it possible to calculate the radial-angular vibra
tions of the rotor of a centrifugal machine in the seals and construct the amplitude–frequency char
acteristics. By purposefully changing the parameters of non-contact seals, an initially flexible rotor
can be made rigid, and its vibration resistance increases. Due to this, the environmental safety of
critical pumping equipment increases.


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