Research on the underwater noise radiation of high pressure water jet propulsion

Luo, Xiaohui; Li, Qiuping; Zhang, Zuti; Jijian, Zhang

doi:10.1016/j.oceaneng.2020.108438

Cited by 27 publications

(10 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As shown in Eq. (3)(4)(5)(6)(7)(8)(9), each of the sun, ring, carrier and 3 planets are treated as rigid bodies. Component bearings are modeled by linear springs.…”

Section: Theoretical Analysis Of the Gearbox Vibrationmentioning

confidence: 99%

“…The specifications of the planetary gear parameter are shown in TABLE 2. Bearing Stiffness(N/m) kc = kr = ks = kp =10 8 Torsional Stiffness(N/m) krt =10 9 kst = kct=0…”

Section: Theoretical Analysis Of the Gearbox Vibrationmentioning

confidence: 99%

“…These special characteristics make it widely used in underwater equipment, such as variable ballast system (VBS), bilge drainage system, high pressure water mist fire suppression system, high pressure waterjet propulsion system, etc. [4][5][6][7][8]. With the missions of underwater equipment becoming increasingly complex and varied, such as military applications, inspection of underwater structures, exploration of unknown environments, oceanographic observations, submarine rescue, underwater animal behavior research, and so on [9], the underwater equipment with better stability, higher reliability, lower vibration and noise radiation characteristics is strongly required.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

et al. 2021

Self Cite

View full text Add to dashboard Cite

Seawater hydraulic piston pump has been widely used in ocean engineering and become a key power component for underwater equipment due to its inherent characteristic such as energy conservation and environment friendly. As one of the most important properties of seawater hydraulic piston pump, vibration would further determine the stability, reliability and stealth of underwater equipment. In this paper, the dynamic of a novel crankshaft seawater piston pump with gearbox are analyzed theoretically, illustrating the dramatically effect of the gearbox on the vibration characteristic of the seawater hydraulic piston pump. Then, a new type crankshaft seawater hydraulic piston pump system driven by a permanent magnet synchronous motor instead of asynchronies motor is proposed in order to eliminate the gearbox and improve the vibration characteristics. In addition, the vibration characteristic of this new type crankshaft seawater hydraulic piston pump system driven by asynchronous motor and permanent magnet synchronous motor are studied and compared experimentally. The experiment results indicate that the seawater hydraulic piston pump system driven by permanent magnet synchronous motor eliminating the gearbox has lower vibration acceleration level in comparison with the pump system driven by asynchronous motor and gearbox. The vibration acceleration level can be reduced from 7dB to 4.3dB. Driving the seawater hydraulic piston pump by permanent magnet synchronous motor instead of asynchronous motor is of benefit to eliminating the gearbox and reducing the vibration excitation source. Consequently, the vibration characteristic of the seawater hydraulic piston pump system driven by a permanent magnet synchronous motor is significantly improved.

show abstract

“…As shown in Eq. (3)(4)(5)(6)(7)(8)(9), each of the sun, ring, carrier and 3 planets are treated as rigid bodies. Component bearings are modeled by linear springs.…”

Section: Theoretical Analysis Of the Gearbox Vibrationmentioning

confidence: 99%

“…The specifications of the planetary gear parameter are shown in TABLE 2. Bearing Stiffness(N/m) kc = kr = ks = kp =10 8 Torsional Stiffness(N/m) krt =10 9 kst = kct=0…”

Section: Theoretical Analysis Of the Gearbox Vibrationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…These advantages promote the seawater hydraulics widely be applied on underwater devices, such as the variable ballast system (VBS), operating systems, bilge drainage system, high pressure water mist fire suppression system, high pressure water jet propulsion system, and other key subsystems of marine equipment. [4][5][6][7][8][9][10] SWHRV is an important indispensable safety and control device to make the operating pressure of 1 School of Power and Mechanical Engineering, Wuhan University, Wuhan, Hubei, China 2 seawater hydraulics circuit maintain at a preset range and prevent the system from overpressure and damage by releasing excess fluid. It makes the Seawater-Hydraulic-System operate within the safety pressure range and guarantee the safety of the whole Seawater-Hydraulic-System.…”

Section: Introductionmentioning

confidence: 99%

Research on the dynamic characteristic of a Seawater-Hydraulic-Relief-Valve with a damping orifice

Zhang

Bao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

Self Cite

View full text Add to dashboard Cite

Seawater-Hydraulic-Relief-Valve (SWHRV) is a significant control component for Seawater-Hydraulic-System in underwater equipment. It makes the Seawater-Hydraulic-System operate within the relief pressure range and ensure the safety of the whole Seawater-Hydraulic-System. The performance of a SWHRV with an orifice and damping chamber is researched in this paper. The nonlinear mathematic model is built based on the operation principal and the visualization graphic simulation model is built by use of AMESim software. The simulation results indicates it has well static performances and satisfies the industrial requirements. Its rated opening pressure is 100 bar, and the releasing flowrate reaches 100 l/min when the pressure increase to 107 bar. The pressure adjusting range is between 100 bar and 205 bar. And the maximum releasing flowrate is as high as 1600 l/min at the pressure of 205 bar. Due to the damping orifice and chamber, a damping force would generate accompanying with the dynamitic motion of the spool. The opening dynamic characteristic is evidently improved though the shutting time becomes longer in comparison with the relief valve without orifice. The pressure oscillation is eliminated and it could reach the steady state ultimately. Furthermore, the effect of the damping orifice and chamber’s structure parameters on the dynamitic characteristic is analyzed. The orifice’s cross-sectional area is the main effect factor and the influence of the initial chamber volume can be neglected. Finally, the relief valve achieves well dynamic characteristic with the peak time 0.003 s and the transition time 0.015 s. The overshoot is about 20%. It has well performance with fast response, small overshoot and strong robustness.

show abstract

A venturi device for stable addition of foaming agent to self‐suction liquid at high flow rates

Lu,

Wu,

Chen

et al. 2024

Engineering Reports

View full text Add to dashboard Cite

To achieve a stable addition of foaming agent under high flow rates, an independently designed venturi structure with self‐suction of liquid to add foaming agent was numerically simulated. We simulated the effects of different self‐suction liquid structures' diameters (diameter of the tube in which the liquid is sucked in), contraction angles, throat length, and position on the suction liquid ratio (ratio of venturi self‐suction liquid flow rate to total flow rate), compared and analyzed the data, and determined the optimal self‐suction liquid structures parameters. The suction liquid ratio shows a tendency to first stabilize and then decrease as the outlet pressure increases. When the outlet pressure in range of 0.30–0.45 MPa, the suction liquid ratio remains stable at 1.14%. However, as the outlet pressure increases, the ability of the venturi structure to add foaming agent through the self‐suction liquid decreases under high flow rates, causing the suction liquid ratio to rapidly decrease to a minimum value of 0.60 MPa. We have conducted a detailed analysis of the process and flow field of suction liquid. As the outlet pressure increases, the high‐speed area of the throat gradually shrinks, and the flow field in the diffusion section fluctuates. When the outlet pressure is 0.6 MPa and the velocity field shifts toward the upper part of the diffusion section, the cavitation area will gradually disappear and lose its liquid suction ability.

show abstract

Research on the underwater noise radiation of high pressure water jet propulsion

Cited by 27 publications

References 22 publications

Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

Research on the Vibration Characteristic of a Seawater Hydraulic Piston Pump System and Vibration Reduction Approach

Research on the dynamic characteristic of a Seawater-Hydraulic-Relief-Valve with a damping orifice

A venturi device for stable addition of foaming agent to self‐suction liquid at high flow rates

Contact Info

Product

Resources

About