The closing pressure angle of the distributor plate in a piston pump has an influence on the vibration and noise characteristics of the pump. The closing pressure angle is the angle at which the distributor plate closes the orifice to control fluid flow to the plunger. The following outlines how the closing pressure angle affects the vibration and noise of a piston pump: 1. Vibration: - Pressure pulsation: The closing pressure angle affects the timing and magnitude of the pressure pulsation in the pump. A smaller closing pressure angle results in a more abrupt change in pressure when the port closes, resulting in higher pressure pulsation. These pulsations cause vibrations in the pump components and surrounding structures. - Pump resonance: The closing pressure angle affects the resonance characteristics of the pump system. If the closing pressure angle coincides with one of the natural frequencies of the pump or its components, this can lead to resonance amplification and increased vibration levels. -Dynamic loads: Variations in the closing pressure angle cause dynamic loads on the plunger and distribution plate. These dynamic loads generate vibrations and stresses that can lead to wear, fatigue and increased noise. 90-R-075-KP-2-NN-80-P-4-S1-D-04-GBA-23-23-22 90R075KP2NN80P4S1D04GBA232322 90-R-075-KP-2-NN-80-R-3-S1-D-03-GBA-35-35-24 90R075KP2NN80R3S1D03GBA353524 90-R-075-KP-2-NN-80-S-3-C6-E-03-GBA-42-42-24 90R075KP2NN80S3C6E03GBA424224 90-R-075-KP-2-NN-80-S-3-S1-D-02-GBA-26-26-24 90R075KP2NN80S3S1D02GBA262624 90-R-075-KP-2-NN-80-S-4-S1-D-03-GBA-35-35-24 90R075KP2NN80S4S1D03GBA353524 90-R-075-KP-2-NN-81-R-4-S1-D-03-GBA-35-35-24 90R075KP2NN81R4S1D03GBA353524 90-R-075-KP-5-AB-80-L-3-S1-D-00-EBC-38-14-24 90R075KP5AB80L3S1D00EBC381424 90-R-075-KP-5-AB-80-L-3-S1-E-04-GBA-42-42-24 90R075KP5AB80L3S1E04GBA424224 90-R-075-KP-5-AB-80-P-3-S1-D-03-GBA-35-35-24 90R075KP5AB80P3S1D03GBA353524 90-R-075-KP-5-AB-80-P-3-S1-E-03-GBA-35-35-24 90R075KP5AB80P3S1E03GBA353524 90R075-KP-5-AB-80-S-3-C7-D-03-GBA-35-35-24 90R075KP5AB80S3C7D03GBA353524 90-R-075-KP-5-AB-80-S-3-C7-D-03-GBA-35-35-24 90R075KP5AB80S3C7D03GBA353524 90R075-KP-5-BB-80-L-3-S1-E-00-GBA-32-32-24 90R075KP5BB80L3S1E00GBA323224 90-R-075-KP-5-BB-80-L-3-S1-E-00-GBA-32-32-24 90R075KP5BB80L3S1E00GBA323224 90-R-075-KP-5-BB-80-R-3-S1-D-03-GBA-35-35-24 90R075KP5BB80R3S1D03GBA353524 90-R-075-KP-5-BC-60-R-3-T2-D-03-GBA-42-42-24 90R075KP5BC60R3T2D03GBA424224 90-R-075-KP-5-BC-80-L-3-S1-E-03-GBA-14-14-24 90R075KP5BC80L3S1E03GBA141424 90-R-075-KP-5-BC-80-L-3-S1-E-03-GBA-32-32-24 90R075KP5BC80L3S1E03GBA323224 90-R-075-KP-5-BC-80-P-3-S1-D-05-GBA-42-42-24 90R075KP5BC80P3S1D05GBA424224 90-R-075-KP-5-BC-80-R-3-S1-D-00-GBA-35-35-24 90R075KP5BC80R3S1D00GBA353524 2. Noise: - Fluid flow noise: Closing pressure angle affects flow characteristics and fluid dynamics within the pump. Sudden changes in flow direction or flow disturbances caused by closing plates create turbulence and flow-induced noise. Smaller closing pressure angles may result in more turbulent flow conditions, resulting in increased noise levels. -Impact noise: Closing the pressure angle affects the impact force between the plunger and distribution plate. Larger closing pressure angles may result in higher impact forces during closing, resulting in increased impact noise. - Structure-borne noise: The vibrations caused by the closing pressure angle also propagate through the pump structure, creating structure-borne noise. These vibrations can be emitted as noise from the pump casing and other components, affecting the overall noise level. 90-R-075-KP-5-BC-80-R-4-S1-D-02-GBA-35-26-20 90R075KP5BC80R4S1D02GBA352620 90-R-075-KP-5-BC-80-R-4-S1-E-06-GBA-26-26-24 90R075KP5BC80R4S1E06GBA262624 90-R-075-KP-5-BC-80-S-3-S1-D-03-GBA-45-45-28 90R075KP5BC80S3S1D03GBA454528 90-R-075-KP-5-BC-80-S-4-C6-C-03-GBA-35-35-24 90R075KP5BC80S4C6C03GBA353524 90-R-075-KP-5-BC-80-S-4-S1-C-03-GBA-35-35-24 90R075KP5BC80S4S1C03GBA353524 90R075-KP-5-CD-60-L-4-S1-E-06-GBA-38-38-28 90R075KP5CD60L4S1E06GBA383828 90-R-075-KP-5-CD-60-L-4-S1-E-06-GBA-38-38-28 90R075KP5CD60L4S1E06GBA383828 90R075-KP-5-CD-60-P-3-T2-D-03-GBA-38-14-24 90R075KP5CD60P3T2D03GBA381424 90-R-075-KP-5-CD-60-P-3-T2-D-03-GBA-38-14-24 90R075KP5CD60P3T2D03GBA381424 90R075-KP-5-CD-80-L-3-S1-E-00-GBA-32-32-24 90R075KP5CD80L3S1E00GBA323224 90-R-075-KP-5-CD-80-L-3-S1-E-00-GBA-32-32-24 90R075KP5CD80L3S1E00GBA323224 90R075-KP-5-CD-80-L-3-S1-E-00-GBA-40-40-24 90R075KP5CD80L3S1E00GBA404024 90-R-075-KP-5-CD-80-L-3-S1-E-00-GBA-40-40-24 90R075KP5CD80L3S1E00GBA404024 90R075-KP-5-CD-80-L-3-S1-E-05-GBA-32-32-20 90R075KP5CD80L3S1E05GBA323220 90-R-075-KP-5-CD-80-L-3-S1-E-05-GBA-32-32-20 90R075KP5CD80L3S1E05GBA323220 90R075-KP-5-CD-80-L-4-S1-D-03-GBA-32-32-20 90R075KP5CD80L4S1D03GBA323220 90-R-075-KP-5-CD-80-L-4-S1-D-03-GBA-32-32-20 90R075KP5CD80L4S1D03GBA323220 90-R-075-KP-5-CD-80-P-4-S1-D-05-GBA-42-42-24 90R075KP5CD80P4S1D05GBA424224 90-R-075-KP-5-CD-80-S-3-C6-D-03-GBA-45-45-28 90R075KP5CD80S3C6D03GBA454528 90-R-075-KP-5-CD-80-S-3-S1-D-03-GBA-42-42-24 90R075KP5CD80S3S1D03GBA424224 In order to reduce the impact of the closing pressure angle on the vibration and noise of the plunger pump, the following measures can be considered: -Optimized closing angle: Carefully select the closing pressure angle according to the design and operating conditions of the pump. A balance needs to be struck between the desired flow control and minimizing sudden pressure changes and associated vibrations. - Damping and Isolation: Damping mechanisms and vibration isolation techniques are employed to attenuate the transmission of vibrations in and around the pump. - Surface treatment: Appropriate surface treatment or coating on critical components to reduce friction, wear and impact during closure. - Design modifications: Consider design modifications such as optimizing port geometry, introducing flow conditioners, or utilizing pulsation dampers to mitigate pressure pulsations and reduce vibration and noise levels. - Computational Fluid Dynamics (CFD) analysis: Perform CFD simulations to analyze flow characteristics and pressure distribution within the pump. This can help identify areas of high turbulence or pressure fluctuations and guide design improvements. -Material Selection: Select suitable materials for the distribution plate and other parts of the pump to reduce vibration caused by wear and friction. Materials with good damping properties help absorb vibrations and reduce noise generation. - Lubrication and Filtration: Ensure proper lubrication and filtration of hydraulic fluids to minimize friction, wear and potential vibration caused by contaminants. Clean and well-lubricated components help reduce noise and vibration levels. - Tolerances and Clearances: Maintain proper tolerances and clearances between distribution plates and other moving parts. Excessive clearance can lead to increased impact noise and vibration, while insufficient clearance can cause excessive friction and wear. -Balance: Balance rotating components such as plunger assemblies and crankshafts to minimize vibrations caused by uneven mass distribution. Unbalanced components can produce noticeable vibration and noise during operation. 90-R-075-KP-5-CD-80-S-3-S1-D-03-GBA-45-45-28 90R075KP5CD80S3S1D03GBA454528 90-R-075-KP-5-CD-80-S-4-C6-C-03-GBA-35-35-24 90R075KP5CD80S4C6C03GBA353524 90R075-KP-5-NN-60-L-4-S1-D-06-GBA-29-29-28 90R075KP5NN60L4S1D06GBA292928 90-R-075-KP-5-NN-60-L-4-S1-D-06-GBA-29-29-28 90R075KP5NN60L4S1D06GBA292928 90-R-075-KP-5-NN-61-S-4-S1-D-03-GBA-35-35-20 90R075KP5NN61S4S1D03GBA353520 90R075-KP-5-NN-80-L-3-S1-D-00-GBA-30-30-24 90R075KP5NN80L3S1D00GBA303024 90-R-075-KP-5-NN-80-L-3-S1-D-00-GBA-30-30-24 90R075KP5NN80L3S1D00GBA303024 90-R-075-KP-5-NN-80-L-3-S1-D-02-GBA-35-35-24 90R075KP5NN80L3S1D02GBA353524 90R075-KP-5-NN-80-L-4-S1-E-03-GBA-38-38-24 90R075KP5NN80L4S1E03GBA383824 90-R-075-KP-5-NN-80-L-4-S1-E-03-GBA-38-38-24 90R075KP5NN80L4S1E03GBA383824 90-R-075-KP-5-NN-80-S-4-S1-E-03-GBA-29-29-28 90R075KP5NN80S4S1E03GBA292928 90-R-075-KT-1-AB-80-D-4-S1-L-03-GBA-26-26-24 90R075KT1AB80D4S1L03GBA262624 90-R-075-KT-1-AB-80-L-3-S1-E-03-GBA-35-35-24 90R075KT1AB80L3S1E03GBA353524 90-R-075-KT-1-AB-80-P-3-S1-D-03-GBA-35-35-24 90R075KT1AB80P3S1D03GBA353524 90-R-075-KT-1-BB-60-R-3-S1-E-00-GBA-38-38-24 90R075KT1BB60R3S1E00GBA383824 90-R-075-KT-1-BB-80-P-3-S1-E-00-GBA-38-38-24 90R075KT1BB80P3S1E00GBA383824 90-R-075-KT-1-BB-80-R-3-S1-E-00-GBA-38-38-24 90R075KT1BB80R3S1E00GBA383824 90-R-075-KT-1-BB-80-R-3-S1-E-00-GBA-42-42-24 90R075KT1BB80R3S1E00GBA424224 90-R-075-KT-1-BC-60-R-4-S1-D-03-EBC-38-38-24 90R075KT1BC60R4S1D03EBC383824 90-R-075-KT-1-BC-80-P-3-S1-E-03-GBA-42-42-24 90R075KT1BC80P3S1E03GBA424224 - Damping elements: Consider using damping elements, such as elastic mounts or shock absorbers, to reduce the transmission of vibrations from the pump to the surrounding structure. These damping elements help dampen vibrations and minimize noise radiation. - Computational Modeling: Utilize advanced computational modeling techniques, such as finite element analysis (FEA) or dynamic simulation, to predict the vibration and noise behavior of the pump at different closing pressure angles. This allows for virtual optimization and fine-tuning of designs prior to physical prototyping and testing. - Experimental testing: Experimental testing of prototype pumps with different closing pressure angles, measurement and analysis of vibration and noise characteristics. This provides valuable data for verification and comparison with simulation results, enabling further design improvements. It is worth noting that the exact effect of closing pressure angle on vibration and noise depends on many factors including pump design, operating conditions and overall system configuration. Therefore, a comprehensive analysis combining theoretical modeling, simulation, and experimental verification is essential to fully understand and optimize the effect of the closing pressure angle on the vibration and noise of the plunger pump.