Theoretical, simulation and experimental investigation of 1D hybrid pressure distribution for internal gear motors and pumps

Pham, Trong Hoa; Nguyen, Dinh Tu; Weber, Jürgen

doi:10.1007/s12206-019-1209-x

Cited by 3 publications

(3 citation statements)

References 12 publications

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“…An unconventional layout of the carrying chambers on the working surface of a hydrostatic bearing is proposed. In this statement, the calculation procedure in [1][2][3][4][5][6][7][8][9][10][11][12][13] was not considered. The results make it possible to recommend hydrostatic bearings with an unconventional arrangement of carrying chambers on its working surface as shaft supports for gear-type fuel pumps.…”

Section: Discussion Of Results Of Investigating the Characteristics O...mentioning

confidence: 99%

“…The viscosity of the lubricant also changes under the influence of high temperature. Paper [8] presents an approach to the calculation of a one-dimensional hybrid pressure distribution. The Reynolds equation with the corresponding boundary condition is solved to derive a twodimensional distribution of hydrodynamic pressure using the finite difference method.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…In works [1][2][3][4][5][6][7][8][9][10][11][12][13], the specific design of the working surface of the bearing, which is most suitable for bearings of gear fuel pump pumps, is not considered. A comparative analysis of various design options for the working surface of the bearing in relation to gear-type fuel pumps is also not considered.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Revealing the influence of structural and operational parameters of a hydrostatic bearing in a gear-type fuel pump on its main characteristics

Nazin

2023

EEJET

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The object of this study is hydrostatic processes in the sliding supports of gear-type fuel pumps. The problem solved was the influence of the structural and operational parameters of hydrostatic bearings of the fuel pump on their static characteristics. The carrying capacity and consumption of the lubricant were considered as static characteristics. The characterization was based on the function of distributing the pressure in the lubricant layer. It was determined from the joint solution of the Reynolds equations and the balance of costs. The carrying capacity of the bearing was determined by the numerical integration of the pressure distribution function in the lubricant layer. The lubricant consumption was determined by the calculated pressures in the chambers. Variants of the working surface of the bearing with two and three carrying chambers were considered. Due to the fact that the load in the pump acts in one direction during operation, the scheme of the working surface of the bearing with two carrying chambers was adopted. The fluid consumption of such a bearing was less compared to a bearing with three carrying chambers. One of the parameters that significantly affect the carrying capacity of the bearing is the diameter of the nozzle installed at the inlet to the chambers. It has been established that the dependence of the carrying capacity of a hydrostatic bearing on the diameter of the nozzle is nonlinear. With an increase in the diameter of the nozzle from 1 mm to 2.3 mm, the carrying capacity of the bearing increased by about 2.83 times. The extraction of fuel for the operation of the hydrostatic bearing was 1 % of the fuel pumped by the pump. The results make it possible to recommend hydrostatic bearings as shaft supports for gear-type fuel pumps and can be used for practical calculations

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Section: Discussion Of Results Of Investigating the Characteristics O...mentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Revealing the influence of structural and operational parameters of a hydrostatic bearing in a gear-type fuel pump on its main characteristics

Nazin

2023

EEJET

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Research and design of internal meshing gear pump separating crescent plate

Guo,

2024

Sci Rep

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The design of the crescent block is a key factor in the high-pressure operation of the internal meshing gear pump. In order to increase the output pressure of the pump, this article designs a new type of separable crescent plate. Then, taking a certain type of high-pressure internal meshing gear pump as the research object, a nonlinear differential equation for the internal flow field of the gear pump was established, and the pressure distribution law in the transition zone of a cycle was derived. A mathematical model of the device was established based on the equilibrium conditions of the internal and external crescent block forces. Finally, experimental research was conducted on the design parameters of the separation crescent plate. The results showed that under the conditions of displacement of 100.5 ml/r, pressure of 20.5 MPa, and rotational speed of 1800 RPM, the compensation chamber angle range was 31.23°, and the pump's volumetric efficiency could reach 94.6%. There were no abnormal phenomena during the entire operation of the pump, and there was no jamming or jamming of the friction pair.

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Runout tracking in gear motors using a microsensor based on all-fiber Fabry–Perot interferometry

Jiang

Zhang

et al. 2021

Appl. Opt.

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A novel radial runout measurement method for gear motors using a microsensor based on all-fiber Fabry–Perot interferometry is investigated. In order to achieve the fault diagnosis, in this method, a single-mode fiber is put forward as a sensor to measure radial runout of the rotating shaft. The performance of the proposed sensor has been compared to a Portable Digital Vibrometer–100 laser vibrometer for validation purposes, and the results show that the difference between them is approximately ± 0.55 µ m .

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Theoretical, simulation and experimental investigation of 1D hybrid pressure distribution for internal gear motors and pumps

Cited by 3 publications

References 12 publications

Revealing the influence of structural and operational parameters of a hydrostatic bearing in a gear-type fuel pump on its main characteristics

Revealing the influence of structural and operational parameters of a hydrostatic bearing in a gear-type fuel pump on its main characteristics

Research and design of internal meshing gear pump separating crescent plate

Runout tracking in gear motors using a microsensor based on all-fiber Fabry–Perot interferometry

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