Fracture Toughness Testing and Prediction for Ceramic Materials Using in Large-Flow-Rate Emulsion Pumps

Li, Ran

doi:10.11648/j.ijmea.20190702.12

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Ceramic pistons seem to be ideal for periodically changing the working chamber volume of the piston pump, providing advantages such as excellent wear and corrosion resistance, high hardness, and thermal stability. 23, 24…”

Section: Experimental Analysis and Discussionmentioning

confidence: 99%

Design and experimental validation of a valve-distributed water radial piston pump

Li,

Wei,

Liu

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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In underground coal mining, there is an urgent need for reducing the noise, hydraulic shock, and leakage of reciprocating pumps. Flow pulsation is strongly dependent on the number of pistons for single-acting reciprocating pumps. Water hydraulic radial piston pumps (RPPs) allow the pistons to be radially distributed, which makes the multi-piston design easier compared to traditional single-acting reciprocating piston pumps. In this study, a novel valve-distributed water RPP was developed in which the star wheel assembled on the camshaft is used to drive the connecting rod-crosshead-piston assembly and realize the reciprocation of the piston and suction-discharge of the pump check valves. Mathematical and numerical models representing the RPP were built using MATLAB and AMESim, respectively. Three-dimensional computational fluid dynamics analyses were performed to investigate the internal flow field of the suction and discharge circuits as well as the flow characteristics of the discharge valve opening. A prototype pump was manufactured and tested for 200 h and then disassembled to evaluate the wear condition. The tested instant flow rates were lower than those obtained from the theoretical and simulation analyses. The experimental results also revealed that the average flow rates were almost independent of the output pressure and that the volumetric efficiency decreased with increasing rotational speed when the output pressure was larger than 25 MPa. Inspecting the disassembled water RPP revealed that scuffing problems occurred in the pistons, whereas the other components remained intact. The findings of this study offer a reference for water hydraulic power units in various applications and for investigating the intensity of water hydraulics.

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Section: Experimental Analysis and Discussionmentioning

confidence: 99%

Design and experimental validation of a valve-distributed water radial piston pump

Li,

Wei,

Liu

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Reciprocating pumps are widely used in petroleum/gas, chemical, mining, and other industrial applications [1,2]. Self-acting pump valves at the inlet and outlet of the liquid end of a reciprocating pump are used for breathing and fluid removal.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Dynamic and Flow Characteristics of a Reciprocating Pump Valve

Wen-shu

Líu

et al. 2022

Processes

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The structure and dynamics of a reciprocating pump liquid end affect the volumetric efficiency and net positive suction head. To match the kinematics with theoretical parameters, reciprocating pump valve motion and flow visualization tests and computational fluid dynamics (CFD) analyses were performed on a wing-guided bevel discharge valve in a horizontal quintuple single-acting reciprocating pump. The valve motion test results showed that the maximum pump valve displacement and the pump valve opening and closing durations were approximately 8.3 mm, 29 ms, and 38 ms, respectively. The corresponding flow visualization test results were 11.4 mm, 9.5 ms, and 35.5 ms. The valve closing durations obtained from the valve motion and flow visualization tests are approximately twice as high as the U-Adolph prediction. The maximum displacement obtained from the valve motion test is consistent with the U-Adolph prediction. Three-dimensional CFD analyses were performed to investigate the flow states, pressure, and velocity characteristics of the discharge valve opening. Finally, the proposed method was applied to develop a new horizontal quintuple single-acting reciprocating pump with a rated flow rate of 1250 L/min and pressure of 40 MPa. This developed pump exhibited good performance and excellent reliability.

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Fracture Toughness Testing and Prediction for Ceramic Materials Using in Large-Flow-Rate Emulsion Pumps

Cited by 2 publications

References 16 publications

Design and experimental validation of a valve-distributed water radial piston pump

Design and experimental validation of a valve-distributed water radial piston pump

Experimental and Numerical Study on the Dynamic and Flow Characteristics of a Reciprocating Pump Valve

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