Study on hydraulic direct-acting relief valve

Syrkin, V. V.; Balakin, P. D.; Treyer, V. A.

doi:10.1088/1742-6596/858/1/012035

Cited by 3 publications

(4 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Wu et al [12] established a mathematic model of a direct-operated seawater hydraulic relief valve under deep sea, and conducted stability analysis of the relief valve. Syrkin et al [13] used the method of phase trajectories to establish the controller's parameters and modes, and obtained the dynamic characteristics providing the absence of self-oscillations at the expense of additional damping of the shut-off and regulating elements. Raeder et al [14] proposed an approach involving numerical simulation of non-stationary 3D gas dynamics, which enables one to determine a spatial structure of flow in a direct-acting safety valve and its quantitative characteristics (pressure, density, velocity, temperature).…”

Section: Introductionmentioning

confidence: 99%

Study on the Influencing Factors of the Response Characteristics of the Slide Valve-Type Direct-Acting Relief Valve with External Orifice

Liu

Qing

2023

Processes

View full text Add to dashboard Cite

The slide valve-type direct-acting relief valve with external orifice (SVTDARVWEO) is widely used in hydraulic systems, and its response characteristics are influenced by key factors. It is of great significance to carry out research on the influencing factors of the response characteristics of the SVTDARVWEO. The working principle of the SVTDARVWEO is analyzed in the present study. The simulation model of the SVTDARVWEO is established using AMESim. The influence of the orifice diameter, viscosity coefficient, valve element mass, spring stiffness, oil seal length, and valve element diameter on the response characteristics of the SVTDARVWEO is studied. The results show that: (1) The smaller the orifice diameter is, the smaller the oscillation frequency, amplitude and maximum overshoot of pressure, flowrate, displacement and velocity are. (2) When the viscosity coefficient is 50 N/(m/s), 55 N/(m/s) and 60 N/(m/s), the pressure, flowrate, displacement and velocity oscillate periodically, but the amplitude of the oscillation decreases gradually, and the oscillation frequency is 250 Hz. When the viscosity coefficient is 60 N/(m/s), the pressure, flowrate, displacement and velocity will reach their respective stable values earlier. (3) When the valve element mass is 0.01 kg, 0.015 kg and 0.02 kg, the pressure, flowrate, displacement and velocity oscillate periodically, but the amplitude of oscillation decreases gradually. When the valve element mass is 0.01 kg, the pressure, flowrate, displacement and velocity will reach the stable value earlier. (4) The smaller the spring stiffness is, the greater the maximum overshoot of pressure, flowrate, displacement and velocity is, and the higher the number of oscillations to reach the stable value are, in addition to more time being required. (5) With the increase in oil seal length, the maximum overshoot of pressure and velocity, stability value of displacement also increase correspondingly. (6) With the increase in the valve element diameter, the stable value of pressure decreases, and the oscillation frequency of pressure, flowrate, displacement and velocity increase, but the oscillation amplitude decreases.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on the Influencing Factors of the Response Characteristics of the Slide Valve-Type Direct-Acting Relief Valve with External Orifice

Liu

Qing

2023

Processes

View full text Add to dashboard Cite

show abstract

“…Рассматривается методика расчета делителя потока, в котором в качестве регулирующего органа используется элемент из эластичного материала в виде тора (кольцо с круглым поперечным сечением) [7,8] (рис. 1), позволяющий упростить конструкцию и повысить надёжность.…”

unclassified

“…Относительная ошибка деления потока определяется отношением разности расходов жидкости в магистралях гидродвигателей к половине подводимого к делителю потока жидкости [8] , где A -относительная ошибка деления потока в %; ΔQ -разность расходов в магистралях гидродвигателя; Q -расход подводимого к делителю потока.…”

unclassified

“…Расчет погрешности деления потока производится следующим образом [8]. Регулирующий орган в виде эластичного кольца круглого поперечного сечения приходит в движение, когда перепад давления преодолевает силу трения , где N -сила трения в сопряжении регулирующий орган-корпус делителя потока; Δp -перепад давления, соответствующий силе трения; F -эффективная площадь регулирующего органа 5,…”

unclassified

See 1 more Smart Citation

Calculation of errors in division of flows in regulators with elastic regulating element under variable loads

Syrkin¹,

Abramova²,

Zakernichnaya³

2018

OSB

View full text Add to dashboard Cite

Research Results of the Efficiency of the Motor Grader Side Working Equipment

Korchagin¹,

Летопольский²,

Teterina³

2018

Vestn. SibADI

View full text Add to dashboard Cite

Introduction. Nowadays there is sufficient number of the working bodies’ parameters, which allow performing technological operations in different conditions with minimal labor and energy resources. It is necessary to produce significant excavation during roads’ construction. Therefore, to perform such technological procedure excavation and road machinery are used. The motor grader is an earth-moving machine and is necessary for surface profiling, moving and construction materials’ level.The motor grader efficiency is determined by the performance criterion. World producers of earthmoving and road machinery associate the growth of quality and speed of work with the improvement of the executive working bodies. Moreover, new design variants of dumps are being developed, including design variants for motor graders. Such solution would allow to reduce the necessary number of passages along the construction site and to shorten the time for mounting the working body. The article presents the variant of the motor grader working equipment improving by installing the side working dump.Materials and methods. The calculated dependences of the main parameters of the motor grader are obtained, such as the coupling weight, the nominal traction force, the resistances arising in the operating mode when cutting and moving the ground, and the total engine power for the operating mode at 4 km per hour speed. Strength characteristics of the side working equipment of the motor grader are investigated. The analysis is carried out by using the Solid Software.Results. The results of the theoretical studies are presented graphically and reflected the stresses, displacements and deformations in proposed lateral working equipment of the motor grader. Using the Solid Works software product it is possible to determine the safety margin of the proposed design. The conducted research allows confirming the working capacity of the proposed technical solution.Discussion and conclusion. The proposed technical solution allows increasing the productivity of the machine while performing the planning works, while maintaining the specified accuracy of their implementation. In addition, such design allows profiling not only the horizontal surface, but also the embankment construction when the side blade is located at an angle of up to 20 degrees.

show abstract

Study on hydraulic direct-acting relief valve

Cited by 3 publications

References 1 publication

Study on the Influencing Factors of the Response Characteristics of the Slide Valve-Type Direct-Acting Relief Valve with External Orifice

Study on the Influencing Factors of the Response Characteristics of the Slide Valve-Type Direct-Acting Relief Valve with External Orifice

Calculation of errors in division of flows in regulators with elastic regulating element under variable loads

Research Results of the Efficiency of the Motor Grader Side Working Equipment

Contact Info

Product

Resources

About