Influence of Rectangular Grooved Labyrinth Seal on the Flow Characteristics of Valve Core

Jia, Wenhua; Yin, Chenbo; Zhu, Dasheng; Jiang, Dongjin

doi:10.1166/jctn.2016.4589

Cited by 2 publications

(3 citation statements)

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“…By integrating Eqs. (8) and (9), the Laplace formula of conical valve core displacement as shown in Eq. (10).…”

Section: Overflow Stability Conditionsmentioning

confidence: 99%

“…R. Amirante et al [8] analyzed the variation law of the flow coefficient at the throttle valve with the opening degree and discussed the steady-state hydraulic power and throttling stiffness characteristics of the valve port. Jia Wenhua et al [9] analyzed the pressure control valve with a load sensing pressure compensation function to derive the nonlinear expression and analyzed the influence of the characteristic parameters on system stability. Jose'R and Valde's et al [10] from Spain studied the accurate estimation of the valve flow at the core of conical valve.…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Characteristics and Stability Analysis of Conical Relief Valve

Jia

2019

mech

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Nomenclature P is pressure of fluid; A is cross-sectional area of the tapered valve; ρ is fluid density; Q is flow rate of control; Cd is discharge coefficient; y is vertical distance; D is Diameter of cylinder fluid; Kq is flow gain coefficient; Kc flow pressure gain factor; m is valve core quality; k is spring stiffness; ' SP F is spring preload; Ff is fluid force; P0 is pressure when the distance between conical; As is control fluid flow cross-sec area 2 / 4; S AD   θ is jet angle; Ft is transient fluid force acting on cone body power; Fs is steady state fluid force; Fp is pressure force for the flow field; Meff is effective mass of the spool; Ceff is effective damping coefficient of cylinder fluid; Keff is effective elastic modulus of the spring; Fd is hydraulic resistance; Y(s) is Laplace's formulas for the valve core dis; P(s) is flow field pressure of the relief valve placement; y0 is initial displacement; V is large fluid volume;  is stability factor.

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“…By integrating Eqs. (8) and (9), the Laplace formula of conical valve core displacement as shown in Eq. (10).…”

Section: Overflow Stability Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics and Stability Analysis of Conical Relief Valve

Jia

2019

mech

Self Cite

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“…However, the complicated working conditions and harsh working environment of hydraulic excavators have proposed higher requirements for their intelligent control. By combining hydraulic and electrical control technologies, the electrohydraulic servosystem facilitates hydraulic excavators [1][2][3] in remote control, self-operation, and synergetic work via this integrated control.…”

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confidence: 99%

Properties and Applications of the Electrohydraulic Servosystem of the Hydraulic Excavator

Jia

Yin

et al. 2018

Strength Mater

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The safety and stability of the control system are influenced by external factors. The object of the study is the electrohydraulic servosystem of the hydraulic excavator. The mathematical and simulation models using AMESIM for the servosystem are constructed. Then the pressure and flow characteristics are analyzed. The design and optimization of the electrohydraulic servosystem and its application in excavator engineering are described. The operation process is graphically presented by a curve, which steeply slopes up (rising period) and then flattens out (stabilization period), those periods are shortened by 38.0 and 40.5%, respectively, the delay tracking period decreased by 52.6%, and anti-interference is reliable.

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Influence of Rectangular Grooved Labyrinth Seal on the Flow Characteristics of Valve Core

Cited by 2 publications

References 0 publications

Dynamic Characteristics and Stability Analysis of Conical Relief Valve

Dynamic Characteristics and Stability Analysis of Conical Relief Valve

Properties and Applications of the Electrohydraulic Servosystem of the Hydraulic Excavator

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