Three-Dimensional Flow–Heat Coupling Model of a Wavy-Tilt-Dam Mechanical Seal

Liu, Wei; Liu, Ying; Zhai, Jingjing; Huang, Weifeng; Wang, Yuming

doi:10.1080/10402004.2013.812758

Cited by 16 publications

(6 citation statements)

References 12 publications

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“…The amplitude and continuity of the wavy deformation on the end face of seal ring is determined by the amount of the pressure and thrust force on the bolts. The simulation results of pressure (13MPa) and thrust (5,7,9,10MPa) are shown in Figure 4. When pressure load is fixed in 13MPa, and the wavy deformation is gradually discontinuous with the thrust loads increases.…”

Section: The Synergy Of Pressure and Thrust Boltsmentioning

confidence: 99%

“…The Wavy-Tilt-Dam(WTD) mechanical face seal, which has circumferential waves, a radial taper and seal dam, is widely used in high temperature, high pressure and high velocity industry area, especially in nuclear power plants. Iny [1] , Lebeck [2], Young [3], Young, et al [4], Xu, et al [5] and Liu, et al [6][7][8] have done a lot of theoretical and experimental work on it. The results of their works confirm that WTD face seal not only have good steadystate working performance under extrem working condition, for example at higher temperature and high pressure, but also have better work stability under disturbance.…”

Section: Introductionmentioning

confidence: 99%

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Processing Methods and Predictive Model for Wavy-Tilt-Dam Mechanical Seal

Wang¹,

Liu²,

Gao³

et al. 2014

ABM Proceedings

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A new method of manufacturing the wavy-tilt-dam(WTD) mechanical seal has been mentioned. In this method, the special equipment is designed to provide a predetermined force to external and inner circular surface of the ring. After milling the end face of the seal by grinding miller and releasing the preload, the wavy-tilt-dam can be done on the seal surface. In this paper, a prediction model is built up to investigate the relationship between the predetermined force and the deformation on the surface of the ring by using ANSYS software. A WTD ring is manufactured by this method which approves that the prediction model is in accord with the real process and this manufacturing method of the WTD mechanical seal is a proper choice.

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Section: The Synergy Of Pressure and Thrust Boltsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Processing Methods and Predictive Model for Wavy-Tilt-Dam Mechanical Seal

Wang¹,

Liu²,

Gao³

et al. 2014

ABM Proceedings

Self Cite

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“…Liu et al established a three-dimensional fluid-heat coupling model for corrugated mechanical seals, and studied the heat transfer characteristics for both fluid and solid domains. 16 It was shown that the thermal deformation in the radial direction was larger than the deformation caused by waveness in the circumferential direction. And the maximum temperature of the film would decrease as the wave number increased.…”

Section: Introductionmentioning

confidence: 99%

Thermo-viscous influence on the mechanical seal performance in a reactor coolant pump (RCP)

Wang

et al. 2023

Advances in Mechanical Engineering

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The mechanical seal performance in reactor coolant pump (RCP) is of great importance for the efficient and safe operation of primary loop in nuclear power plant. The sealing medium filling inside the seal encounters strong thermal gradient. In this paper, thermo-viscous effect on sealing characteristics with two typical mechanical seal faces, namely the tapered-end-face and wave-tilt-dam, is numerically studied, by introducing the temperature-viscosity equation according to the real physical properties of the sealing medium. Performance of mechanical seal with two different temperature-viscosity equations are compared. In addition, the influence of thermo-viscous effect on cavitation is also analyzed. It is revealed that the temperature-viscosity variation significantly influences the internal flow field, temperature field, two-phase distribution, and the opening force as well. With low base film thickness, the temperature difference will reduce 58% as considering the thermal effect on viscosity, and the difference in leakage may be as high as 43%. Also, the prediction of cavitation under small film thickness indicates that the thermo-viscous effect decreases the cavitating area. This work contributes to the mechanical seal design and performance prediction by assessing the thermal influences on viscosity of seal medium, and meanwhile revealing the effect on the possible cavitation event.

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“…In addition to the independent hydrodynamic research, some coupling simulations were also applied to analyze the coupled thermo-hydrodynamic characteristics. To study the 3D detailed behavior of the WTD mechanical seal, based on the Reynolds equation [17,18], Liu et al [14,[19][20][21] simulated and analyzed the WTD seal based on the three-dimensional thermal elastic hydrodynamic model, and the results showed that the sealing mechanism was the combined effect of hydrodynamic and hydrostatic. The film cavitation occurs at the high velocity region, and the hydrostatic effect prevailed at the high-pressure region.…”

Section: Introductionmentioning

confidence: 99%

Numerical and Experimental Study on Waviness Mechanical Seal of Reactor Coolant Pump

Ma³

et al. 2020

Processes

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Based on the fluid hydrodynamic lubrication theory, a mathematical model of liquid film lubrication was established for the waviness hydrodynamic mechanical seal of a reactor coolant pump. The influences of the waviness amplitude and pressure on the sealing performance were investigated by the numerical simulation. The numerical results showed that the leakage rate increases linearly as the pressure and waviness amplitude increase under the force balance condition. The minimum liquid film thickness decreases first and then increase as the pressure increases. Stationary slide rings with three different waviness amplitudes were processed using the pre-deformation method and tested at different pressure and temperature. The experiments showed that all the three kinds of seal have good stability under different pressure conditions. The experimental results showed that the leakage rate is influenced by the pressure, waviness amplitude, and temperature, and the leakage rate increases as the pressure increases. The comparison between experimental and numerical results showed that both the temperature and pressure affect the seal performance, and tends to a smaller leakage rate, which is quite different from the numerical values. Therefore, the multi-physics coupling effect should be considered in the numerical analysis of seal performance, and this will be studied in the further works.

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Three-Dimensional Flow–Heat Coupling Model of a Wavy-Tilt-Dam Mechanical Seal

Cited by 16 publications

References 12 publications

Processing Methods and Predictive Model for Wavy-Tilt-Dam Mechanical Seal

Processing Methods and Predictive Model for Wavy-Tilt-Dam Mechanical Seal

Thermo-viscous influence on the mechanical seal performance in a reactor coolant pump (RCP)

Numerical and Experimental Study on Waviness Mechanical Seal of Reactor Coolant Pump

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