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An Analysis on Dynamic Characteristics of Hydraulic Support’s Liquid Pipeline

Author: GuoYanRong
Tutor: LianZiSheng
School: Taiyuan University of Technology
Course: Mechanical Design and Theory
Keywords: For the liquid to piping Bracket hydraulic system Simulink Dynamic characteristic Modeling and Simulation
CLC: TD355.4
Type: Master's thesis
Year: 2011
Downloads: 215
Quote: 2
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Abstract


Hydraulic support to as a the fully mechanized coal face one of the key equipment of, and its working performance decided to the entire the production efficiency of of the fully mechanized mining face. With the the hydraulic bracket to support pressure and flow of the the height and the the increase in of the working resistance as well as the bracket hydraulic system for the fluid the increase of The, the the requirements of of of the Rights liquid PIPING PERFORMANCE in it is more and more high, but and the current Research About the Pipe Line in the bracket is still relatively lack of, the objective of which is the have the is necessary to for its piping effect carried out research, and put forward the piping design Standards set of effective. In this paper, in order to the hydraulic bracket for the fluid piping to as the research object, analysis of the piping static and dynamic characteristics, for the the the choice of of the Engineering the actual on Pipe Line Charge to provide a theoretical reference. On the the fully mechanized coal face stent hydraulic system carried out in detail exposition, and analyzes the of emulsion pump and the the variety of working conditions of the of hydraulic support. In the This on the basis of, the in order to the a certain type of between the pillars covering hydraulic supporter as an example, The specific calculation the the trapezoidal cloth tube under the way of the of the stent of the the corresponding to the piping of of the different pipe diameters hydraulic system pressure loss, and for the the the choice of the Pipe Line in the coal mine the actual in the production of to provide, and so the by theoretical reference for. The This paper mainly discusses liquid the Rights piping over long distances on the the affect the of the Racks of Hydraulic System, In Accordingly, the the the Establishment of of the piping model is crucial. In the this paper, in Simulink, respectively, established a the the piping distributed parameter model and the the lumped parameter model, and contrast the analysis of the establishment of a variety of piping model, asked the the piping model the use of in the in the the hydraulic bracket is suitable for. In Simulink to establish the time-domain of the the critical-hydraulic components of the for of the bracket hydraulic system simulation model, including the emulsion pump, relief valve, manipulation of valve, hydraulic cylinder and and so on on, the the establishment of support hydraulic system for the the principle of and in accordance with the coupling of the Yung-cavity time-domain simulation model. In Simulink by changing the of each parameter, research tube length included in the the piping model, pipe diameter, pipe volume elastic modulus the amount of, and and so on on on the the the the impact of of the the process of raise ram com-column. Simulation results show that in the the raise ram com-column the process of, the the the the response time of with the is proportional to the tube length of of the the Column began to move of, in response to the the time required for approximate to passed two the back and forth time is equal to the pressure wave in the pipeline in the, the inferior vena With Pedestal achieve the fixed-of the system tune pressure the value for the required Time with the Time tube as long increase in while the growth, but both fragmentation On the linear relationship between the; the Timothy Pedestal-liter column speed on go to curve the overshoot The Cover with pipe diameters A is proportional to the, With the much of diameter to increases, the the Pedestal The following is cavity on reach the same First brace pressure value the time required for increase in, and the as the Racks the steady and sexual deteriorated of the of Hydraulic System, but increases pipe diameter Selected to there are conducive to that the column to First brace the the pressure and of the improve the and hydraulic system the pressure loss of in of the decreases; the Pipe sizes elastic bigger the by the Cover of mold, The Pedestal the faster the the speed of liters column, when the the on the the the impact of of the the process of raise ram com-column in the when the similar to of the the pipe bulk modulus of elasticity with the the the volume of the emulsification liquid modulus of elasticity is becomes more apparent. To establish bracket hydraulic system frequency domain simulation model, and made available in the in the Simulink the use of the transfer function of module carried out the frequency domain characteristics on the bracket hydraulic system simulation, analysis of the the impact of of the piping various parameters on the the stent hydraulic system parcels of phase-frequency characteristic curve. The the research work of this article for the the the choice of the Pipe Line in the hydraulic support to provide an important reference basis for, as those involved in in this article Modeling and Simulation of method for other hydraulic system dynamic characteristics of study on the relationship between the to provide of learn from.

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CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Mine support equipment > Mining face support > Hydraulic support and its control
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