A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Guo, Chang; Gao, Ming; He, Suoying

doi:10.3390/app10031022

Cited by 21 publications

(5 citation statements)

References 76 publications

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“…Cavitation is a common problem of centrifugal pumps, which can cause an increase in pump vibration and noise, decrease in performance, and cause serious damage to pump parts [ 31 , 32 ]. There are many reasons for cavitation, but from the perspective of vibration response, whether it is caused by turbulence, internal reflux, or other reasons, it will show a shock vibration response [ 33 ]. The vibration feature of such a cavitation fault is a continuous wide-band signal.…”

Section: Centrifugal Pump Operation Failure and Its Featuresmentioning

confidence: 99%

Monitoring and Predictive Maintenance of Centrifugal Pumps Based on Smart Sensors

Chen

Wei

Wang

et al. 2022

Sensors

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Centrifugal pumps have a wide range of applications in industrial and municipal water affairs. During the use of centrifugal pumps, failures such as bearing wear, blade damage, impeller imbalance, shaft misalignment, cavitation, water hammer, etc., often occur. It is of great importance to use smart sensors and digital Internet of Things (IoT) systems to monitor the real-time operating status of pumps and predict potential failures for achieving predictive maintenance of pumps and improving the intelligence level of machine health management. Firstly, the common fault forms of centrifugal pumps and the characteristics of vibration signals when a fault occurs are introduced. Secondly, the centrifugal pump monitoring IoT system is designed. The system is mainly composed of wireless sensors, wired sensors, data collectors, and cloud servers. Then, the microelectromechanical system (MEMS) chip is used to design a wireless vibration temperature integrated sensor, a wired vibration temperature integrated sensor, and a data collector to monitor the running state of the pump. The designed wireless sensor communicates with the server through Narrow Band Internet of Things (NB-IoT). The output of the wired sensor is connected to the data collector, and the designed collector can communicate with the server through 4G communication. Through cloud-side collaboration, real-time monitoring of the running status of centrifugal pumps and intelligent diagnosis of centrifugal pump faults are realized. Finally, on-site testing and application verification of the system was conducted. The test results show that the designed sensors and sensor application system can make good use of the centrifugal pump failure mechanism to automatically diagnose equipment failures. Moreover, the diagnostic accuracy rate is above 85% by using the method of wired sensor and collector. As a low-cost and easy-to-implement solution, wireless sensors can also monitor gradual failures well. The research on the sensors and pump monitoring system provides feasible methods and an effective means for the application of centrifugal pump health management and predictive maintenance.

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Section: Centrifugal Pump Operation Failure and Its Featuresmentioning

confidence: 99%

Monitoring and Predictive Maintenance of Centrifugal Pumps Based on Smart Sensors

Chen

Wei

Wang

et al. 2022

Sensors

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“…As a typical rotating machinery, research on the vibration and noise of centrifugal pumps has been fruitful at home and abroad [5][6][7][8][9]. Cheng et al [10] improved the noise of a centrifugal pump by cutting the outlet side of the impeller, and found that there exists an optimal cutting width to weaken the rotorstator interaction between the impeller and the volute, which effectively reduces its internal and external sound field.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Effect of Splitter Blades on the Flow-Induced Noise of Hydraulic Turbine

Shi,

Zhao,

Tang

et al. 2024

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In order to study the effect of splitter blades on the internal and external sound field of the hydraulic turbine, the paper chose a centrifugal pump with a specific speed n s = 33 reversed as a hydraulic turbine as the research object, and added the short blades on the original impeller to form a new splitter impeller. Based on the Re-Normalization Group (RNG) k-ε turbulence model to conduct numerical simulation for the hydraulic turbine, this thesis calculated the internal and external acoustic field by means of the acoustic boundary element (BEM) and finite element (FEM) and analyzed the noise radiation characteristics of the two models under different working conditions. The results show that the blade frequency is the main factor affecting the inlet and outlet sound pressure, and the optimized model decreases the inlet and outlet sound pressure levels by 6.84 and 7.24 dB in optimal working conditions. Rotor-stator interaction is the main reason for the flow-induced noise of hydraulic turbine volute appearing, the optimized model can effectively reduce the impeller and volute rotor-stator interaction and the flow-induced noise of volute. Outfield maximum sound pressure appears at the inlet and the volute tongue, which decreased by 1.84, 6.07, and 5.24 dB at each operating condition. To sum up, splitter blades can improve hydraulic characteristics and flow field noise in the hydraulic turbine. KEYWORDSHydraulic turbine; splitter blades; pressure fluctuation; sound field Nomenclature D 1 Impeller inlet diameter (mm) D 2 Impeller outlet diameter (mm) b 2 Inlet width (mm) Z Impeller outlet diameter (mm) D 3 Volute base circle diameter (mm) b 3 Volute outlet width (mm) D Volute inlet diameter (mm) D sb short blade inlet diameter (mm)

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“…The centrifugal pumps are the main fluid transporting devices, which have played an indispensable role in many fields [1][2][3]. With the increasingly stringent environmental requirements, on the basis of high hydraulic performance of centrifugal pumps, the noise performance has received wide attention.…”

Section: Introductionmentioning

confidence: 99%

“…The generation of flow-induced noise was associated with various complex phenomena in pumps, including rotor-stator interaction and cavitation, etc. [3].…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Changing Characteristics of Flow-Induced Noise in a Centrifugal Pump

Li¹,

Sun²,

Wang³

et al. 2021

Fluid Dynamics &Amp; Materials Processing

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Centrifugal pumps are widely used in engineering for a variety of applications. A known drawback of these devices is the high-level noise generated during operations, which can affect their stability and adversely influence the entire working environment. By combining the Powell vortex sound theory, numerical simulations and experimental measurements, this research explores the trends of variation and the corresponding underlying mechanisms for the flow-induced noise at various locations and under different operating conditions. It is shown that the total sound source intensity (TSSI) and total sound pressure level (TSPL) in the impeller, in the region between the inlet to the outlet and along the circumferential extension of the volute, are much higher than those at pump inlet and outlet. Additionally, under various rotational speeds with the design flow rate (Condition 1), the TSSI and TSPL at pump inlet and outlet are higher than those obtained with the opening of the valve kept unchanged (Condition 2); vice versa when these two parameters are evaluated at various locations in the impeller and the volute under the Condition 2, they exceed the equivalent values obtained for the other Condition 1.

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A Review of the Flow-Induced Noise Study for Centrifugal Pumps

Cited by 21 publications

References 76 publications

Monitoring and Predictive Maintenance of Centrifugal Pumps Based on Smart Sensors

Monitoring and Predictive Maintenance of Centrifugal Pumps Based on Smart Sensors

Numerical Study of the Effect of Splitter Blades on the Flow-Induced Noise of Hydraulic Turbine

Investigation on the Changing Characteristics of Flow-Induced Noise in a Centrifugal Pump

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