Characteristic Analysis of Digital Large Flow Emulsion Relief Valve

Abstract

The relief valve is an important control and overload protection component of the emulsion pumping station. Its performance will affect the overall performance of the emulsion pumping station and the stable and intelligent control of the working surface. However, the research on high pressure and large flow relief valve for mine emulsion pumping station is still inadequate. In order to meet the requirements of emulsion pump station for large flow sensitivity, stability, reliability, and remote intelligent control of overflow valve, this paper uses the digital control method to establish the mathematical model of the relief valve and uses the software such as AMESim to its dynamic characteristics. The simulation results show that the structural parameters such as spool quality, damping hole, and spring stiffness have an effect on the working characteristics of the relief valve. It also provides reference for the intelligent control research of the large flow relief valve for the emulsion pumping station.

Energy-Saving Testing System for a Coal Mine Emulsion Pump Using the Pressure Differential Flow Characteristics of Digital Relief Valves

“…Throughout all the literature and market research, there is very little research on water-based flow control valves, and there is also a lack of products in the market that can be applied to water medium and high-pressure conditions. However, research on water-based pressure control valves is relatively mature, and many scholars have proposed design schemes for water-based proportional relief valves and digital relief valves [29,30]. In order to achieve the normal operation of the emulsion pump energy-saving testing system proposed in this article, a solution using a water-based digital relief valve as a flow control valve was proposed, which mainly utilized the pressure difference flow characteristics of the digital relief valve.…”

Characteristic Analysis of Digital Emulsion Relief Valve Based on the Hydraulic Loading System

“…To improve the dynamic performance of relief valve, this paper adopts a digital control scheme using a linear stepping motor to regulate the working pressure based on pilotoperated relief valve [20]. e structure and principle of the digital relief valve are shown in Figure 1.…”

“…For the relief valve applied to the emulsion pumping station, the influence of different structural parameters on the working characteristics of relief valve is obtained by AMESim [20]. is paper mainly focuses on working characteristics of the relief valve applied to the hydraulic loading system.…”

“…Moreover, some scholars analyzed the dynamic characteristics of the pilot-operated relief valve by the theoretical method and AMESim simulation [15][16][17][18][19]. Qing-liang Zeng et al used AMESim and Simulink to analyze dynamic characteristics of the digital large flow emulsion relief valve, respectively [20]. e research on relief valve has mainly focused on the design of the working principle and the simulation analysis of dynamic characteristics based on mathematical model.…”

Tribological Properties of ZrO2 Coating on the Ball Joint of an Axial Piston Pump in High Water-Based Emulsion Medium

“…High water-based emulsion boasts good economy, viscositytemperature performance, rust resistance, and lubricity [1][2][3][4]. erefore, it is widely used in the hydraulic system valve groups of high mining equipment [5][6][7][8]. For example, hydraulic power systems, belonging to underground hydraulic supports, shearer, scraper conveyor, and auxiliary equipment, all use high water-based emulsion as their medium [9][10][11][12].…”