Analysis of the Influence of Structure and Parameters of Axial Piston Pump on Flow Pulsation
Abstract
:1. Introduction
2. Working Principle, Kinematics, and Output Flow Analysis of Swashplate Axial Piston Pump
2.1. Working Principle and Kinematics Analysis of Swashplate Axial Piston Pump
2.2. Output Flow Analysis of Swashplate Axial Piston Pump under Variable Operating Conditions
2.2.1. Theoretical Analysis of Flow Pulsation in Odd-Numbered Piston Pump
2.2.2. Theoretical Analysis of Flow Pulsation of Even-Numbered Piston Pump
3. Analysis of the Influence of the Parameters of the Plunger Piston on the Output Flow
3.1. Analysis of the Influence of Swashplate Angle on Output Flow of Piston Pump
3.2. Analysis of the Influence of the Prime Mover Speed on the Output Flow of the Plunger Pump
3.3. Analysis of Influence of Piston Diameter on Output Flow of Piston Pump
3.4. Analysis of the Influence of Port Plate Structure on the Output Flow of Piston Pump
4. Experimental Verification
5. Conclusions
- (1)
- Through the above analysis, it can be seen that the speed of the prime mover, swashplate angle, diameter of the piston, and port plate structure of the piston pump have an important impact on the flow pulsation of the piston pump. In the actual work of the piston pump, in order to effectively reduce the flow pulsation of the plunger pump and reduce the noise caused by the flow pulsation, the port plate structure should be optimized. That is, the pre-compression angle and misalignment angle of the piston pump should be appropriately reduced, and the inclination of the swashplate and the rotation speed of the prime mover should be controlled within a certain range. When the swashplate angle is 5–10°, the output flow can quickly reach a stable state; when the speed of the prime mover is 1100–1300 r/min, the output flow of the plunger pump can quickly reach a stable state.
- (2)
- In order to reduce the flow pulsation and facilitate the processing and manufacturing in the project, for the odd-numbered piston pump, the pre-compression angle and misalignment angle should be = = 1°; for the even-numbered piston pump, the dead angle and staggered supporting role of the port plate should be = = 3°. At present, the nine-piston piston pump is commonly used in the project, but when the dead angle and staggered supporting role of the port plate are set at = =1°, the pulse rate of the nine-piston piston pump is very close to that of the ten-piston piston pump, which provides a theoretical basis for the popularization and application of the ten-piston piston pump.
- (3)
- The error rate between the model and the experimental data is low, and the model is in positive agreement with the experimental data. The correctness of the simulation model is verified through experiments, which provides a basis for the design and improvement of the piston pump.
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
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K (Variable Speed Ratios) | 0.0001 | 0.001 | 0.01 | 0.03 |
---|---|---|---|---|
, z = 9) | 1.47 | 1.83 | 4.78 | 11.97 |
, z = 10) | 5.01 | 5.18 | 7.0 | 12.03 |
Type i Structure (i = 1–5) | Pre-Compression Angle (°) | Misalignment Angle (°) |
---|---|---|
1 | 10 | 5 |
2 | 8 | 4 |
3 | 6 | 3 |
4 | 4 | 2 |
5 | 2 | 1 |
Type I Structure (i = 1–5) | Pre-Compression Angle (°) | Misalignment Angle (°) | Flow Pulsation Rate (%) z = 8 | Flow Pulsation Rate (%) z = 9 | Flow Pulsation Rate (%) z = 10 | Flow Pulsation Rate (%) z = 11 |
---|---|---|---|---|---|---|
1 | 10 | 5 | 10.25 | 9.50 | 6.91 | 5.39 |
2 | 8 | 4 | 9.55 | 8.31 | 6.56 | 4.31 |
3 | 6 | 3 | 9.07 | 7.30 | 6.19 | 3.51 |
4 | 4 | 2 | 9.20 | 6.61 | 6.30 | 3.34 |
5 | 2 | 1 | 9.70 | 6.36 | 6.60 | 3.28 |
Name | Simulation Value (%) | Experimental Value (%) | Error Rate (%) |
---|---|---|---|
Nine-piston piston pump | 6.75 | 7.11 | 5.1 |
Ten-piston piston pump | 6.21 | 6.44 | 3.6 |
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Li, R.; Liu, Q.; Cheng, Y.; Liu, J.; Sun, Q.; Zhang, Y.; Chi, Y. Analysis of the Influence of Structure and Parameters of Axial Piston Pump on Flow Pulsation. Processes 2022, 10, 2138. https://doi.org/10.3390/pr10102138
Li R, Liu Q, Cheng Y, Liu J, Sun Q, Zhang Y, Chi Y. Analysis of the Influence of Structure and Parameters of Axial Piston Pump on Flow Pulsation. Processes. 2022; 10(10):2138. https://doi.org/10.3390/pr10102138
Chicago/Turabian StyleLi, Ruichuan, Qi Liu, Yi Cheng, Jilu Liu, Qiyou Sun, Yisheng Zhang, and Yurong Chi. 2022. "Analysis of the Influence of Structure and Parameters of Axial Piston Pump on Flow Pulsation" Processes 10, no. 10: 2138. https://doi.org/10.3390/pr10102138