Research on the thrust of a high-pressure water jet propulsion system

Zhang, Zuti; Cao, Shuqian; Luo, Xiaohui; Shi, Wei; Zhu, Yuquan

doi:10.1080/17445302.2017.1321713

Cited by 14 publications

(6 citation statements)

References 19 publications

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“…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%

“…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%

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

et al. 2021

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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.

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“…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%

Section: Introductionmentioning

confidence: 99%

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

et al. 2021

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“…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. 4–10…”

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:

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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.

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“…The UT method works well in liquid pipelines; however, the application in gas pipelines is not common since it requires liquid coupling between the transducer and the surface of the pipeline [27]. UT is more suitable for thick-wall pipelines rather than thin-wall pipelines (less than 7 mm) [28]. Echo loss is another major challenge reported in the literature [29].…”

Section: Introductionmentioning

confidence: 99%

A Real-Time, Non-Contact Method for In-Line Inspection of Oil and Gas Pipelines Using Optical Sensor Array

Sampath

Bhattacharya

Aryan

et al. 2019

Sensors

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Corrosion is considered as one of the most predominant causes of pipeline failures in the oil and gas industry and normally cannot be easily detected at the inner surface of pipelines without service disruption. The real-time inspection of oil and gas pipelines is extremely vital to mitigate accidents and maintenance cost as well as to improve the oil and gas transport efficiency. In this paper, a new, non-contact optical sensor array method for real-time inspection and non-destructive evaluation (NDE) of pipelines is presented. The proposed optical method consists of light emitting diodes (LEDs) and light dependent resistors (LDRs) to send light and receive reflected light from the inner surface of pipelines. The uniqueness of the proposed method lies in its accurate detection as well as its localization of corrosion defects, based on the utilization of optical sensor array in the pipeline, and also the flexibility with which this system can be adopted for pipelines with different services, sizes, and materials, as well as the method’s economic viability. Experimental studies are conducted considering corrosion defects with different features and dimensions to confirm the robustness and accuracy of the method. The obtained data are processed with discrete wavelet transform (DWT) for noise cancelation and feature extraction. The estimated sizes of the corrosion defects for different physical parameters, such as inspection speed and lift-off distance, are investigated and, finally, some preliminary tests are conducted based on the implementation of the proposed method on an in-line developed smart pipeline inspection gauge (PIG) for in-line inspection (ILI) application, with resulting success.

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Research on the thrust of a high-pressure water jet propulsion system

Cited by 14 publications

References 19 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 Real-Time, Non-Contact Method for In-Line Inspection of Oil and Gas Pipelines Using Optical Sensor Array

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