Preliminary testing of the internal gear pump with modifications of the sickle insert

Antoniak, Piotr; Stosiak, Michał; Towarnicki, Krzysztof

doi:10.32933/actainnovations.32.9

Cited by 6 publications

(6 citation statements)

References 8 publications

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“…The basic and main component in a hydrostatic drive system is the positive displacement pump. It is the component in the system where the greatest pressure increase occurs 1 – 5 . The second important component in the system is the rotary hydraulic motor.…”

Section: Introductionmentioning

confidence: 99%

Influence of geometrical and operational parameters on tooth wear in the working mechanism of a satellite motor

Sliwinski

2023

Sci Rep

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This article describes the phenomena affecting the wear of the rotor of the working mechanism in a hydraulic satellite motor. The basic geometrical relationships that allow the calculation of the coordinates of the points of contact between the satellite and the rotor and the curvature are presented. A method for calculating the number of contacts of the satellite teeth with the rotor teeth and of the satellite teeth with the curvature teeth during one revolution of the rotor is proposed. A method of calculating the forces acting at the points of contact of the satellite with the rotor and the curvature is also proposed, as well as a method of calculating the stress in the tooth contact of the interacting components of the mechanism. The results of calculations of forces and stresses in tooth contact in a satellite mechanism consisting of a four-hump rotor and a six-hump curvature are presented. It is shown that the two chambers around the satellite are in the same phase in a certain range of the rotation angle of the rotor, i.e. in the emptying phase or in the filling phase. This results in the value of the force acting on the satellite resulting from the pressure difference being zero. It has also been shown that the most important parameters affecting tooth wear are the pressure difference in the working chambers of the satellite mechanism and the rotor speed.

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Section: Introductionmentioning

confidence: 99%

Influence of geometrical and operational parameters on tooth wear in the working mechanism of a satellite motor

Sliwinski

2023

Sci Rep

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“…Due to the growing share of plastics in the production of hydraulic elements of drive systems [24,25] and the use of new light and high-strength composite materials [26], a modification of the sickle insert was performed by use of plastic with low processing costs. The diagram of the hydraulic system used during the measurements is presented below [27,28] -Fig. 8.…”

Section: Preliminary Test Results For An Internal Gear Pump With Modification Of the Sickle Insertmentioning

confidence: 99%

“…1 -tested gear pump, 2 -tachometer, 3 -torque meter, 4 -electric motor, 5 -control cabinet, 6 -pressure transducer, 7 -throttle valve, 8 -, 9 -cooler, 10safety valve, 11-pressure transducer, 12 -thermometer, 13 -throttle valve on the discharge line of the feed pump, 14 -safety valve on the discharge line of the feed pump, 15 -feed pump, 16 -electric motor driving the feed pump, 17 -control cabinet of the electric motor driving the feed pump. [27,28] To ensure a constant value of the suction pressure of the main pump, a feed pump was installed. The measurements were taken after the test run of the hydraulic system and correctness check of the measurement devices' indications.…”

Section: Preliminary Test Results For An Internal Gear Pump With Modification Of the Sickle Insertmentioning

confidence: 99%

“…The results of the performed measurements are presented below. [27,28] Summarizing the carried out measurements, it can be stated that the introduced modification allows maintaining the pump efficiency with increasing pressure. In an unmodified insert, the performance decreases significantly with increasing discharge pressure.…”

Section: Preliminary Test Results For An Internal Gear Pump With Modification Of the Sickle Insertmentioning

confidence: 99%

“…9. Characteristics of the gear pump with internal gearing with I modification sickle insert at different rotational speeds of the pump shaft: a) n = 750 [rpm], b) n = 1000 [rpm], c) n = 1500 [rpm] [27,28].…”

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Development tendencies of clearance compensation methods in internal gear pumps

et al. 2021

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Contemporary gear pumps, although their design has been under development for over four centuries, keep being modernized and improved. The work presents an analysis of design solutions, taking into account their operational features. The analysis included units with internal mesh. Emphasis was put on the problem of ensuring high values of volumetric efficiency by minimizing leakage in the widest possible range of loads while maintaining the highest possible hydraulic and mechanical efficiency of the displacement unit. Increasing the volumetric efficiency of positive displacement pumps is an important factor in the pursuit of increase in working pressures in hydrostatic systems. An important factor in production of pumps is cost of their production, which often leads to possibility of introducing additional modifications in the pump structure. Often changes made to the materials used in construction of pumps, allow reduction in their mass or sensitivity to the action of the transported liquid. The paper indicates the developed and proprietary solutions in this area and presents the results of experimental research.

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