Wyniki wyszukiwania - BazTech

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The methodology of design of axial clearances compensation unit in hydraulic satellite displacement machine and their experimental verification

Sliwinski Pawel

Archives of Civil and Mechanical Engineering

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2019

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Vol. 19, no. 4

1163--1182

EN

A new methodology of calculating the dimensions of the axial clearance compensation unit in the hydraulic satellite displacement machine is described in this paper. The methods of shaping the compensation unit were also proposed and described. These methods were used to calculate the geometrical dimensions of the compensation field in an innovative prototype of a satellite hydraulic motor. This motor is characterized by the fact that the body rotates. In other words, the planet (an inner element of the working mechanism) is stationary and the curvature (an external element of the working mechanism) is rotating. The inflow and outflow ports are located in the motor pin which replaces its shaft. The results of the analytical calculation of the compensation field geometrical dimensions were used in FEM calculations of the compensation plate deformation. The correctness of the design of axial clearance compensation unit has been verified experimentally. The experimental method consists in measuring leaks in the gaps of the working mechanism and measuring the torque at low constant speed of the motor case. The results of experimental test are also described in this paper. This way, it has been proven that the proposed new analytical methodology for the design of the axial clearance compensation unit in the hydraulic satellite displacement machine is correct.

2

Symulacyjne badania wpływu luzu osiowego pierścienia uszczelniającego na natężenie przedmuchów spalin

Koszałka G., Niewczas A.

Czasopismo Techniczne. Mechanika

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2004

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R. 101, z. 6-M/1

367--372

PL

W artykule przedstawiono wyniki symulacyjnej oceny wpływu luzu osiowego pierścienia uszczelniającego na natężenie przedmuchów spalin z wykorzystaniem matematycznego modelu uszczelnienia układu tłok - pierścienie - cylinder.

EN

The paper presents the simulation study results of the effect of sealing ring axial clearance effect on the rate of blow-by rate, using a mathematical model of piston - rings - cylinder system sealing.

3

Ocena skutków zmiany luzów osiowych w turbinie

Kosman G.

Zeszyty Naukowe. Elektryka / Politechnika Opolska

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2002

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Vol. 280, z. 51

401-408

PL

W pracy przeanalizowano skutki wywołane zmianą luzów osiowych w układzie przepływowym turbiny. Zmiana odległości pomiędzy tarczą kierowniczą i łopatkami wirnikowymi zmienia warunki przepływu pary przez stopień. Wiąże się to z dodatkowymi stratami, a także generacją hałasu i zmianą sił wymuszającą drgania łopatek wirnikowych.

EN

In this paper the effects of axial clearance changes on turbine flow have been analyzed. The alteration of the distance between guide vanes and rotor blades causes the alteration of stage steam flow conditions. It links to additional losses and also generates noise and changes forces extorting rotor blades vibrations.