本文選題：機電聯(lián)動液控閘閥 + 方案設計��； 參考：《太原理工大學》2017年碩士論文

【摘要】：閥門是管路流體運送系統(tǒng)中的關鍵設備,廣泛應用于石油、化工、建筑等多個領域,它在自動化控制技術日益成熟的礦井排水系統(tǒng)中同樣占有舉足輕重的地位,其性能好壞直接影響整個排水系統(tǒng)的安全性和高效性。本文先對煤礦排水系統(tǒng)的基本組成結構進行了簡要介紹,然后引出本文研究的重點排水組成設備——調節(jié)閘閥。介紹了當前閘閥的基本類型和各自的結構原理,對手動閘閥、電動閘閥、液控閘閥等不同閘閥的發(fā)展階段進行了分析,指出了各閘閥所存在的不足和缺陷。針對目前閘閥存在的問題提出了本課題的研究目的,即開發(fā)設計一種適用于礦井排水系統(tǒng)中,能夠同時具有閘閥啟閉速度分別無級調節(jié)、斷電應急工況下通過手搖離合裝置驅動閘閥、液壓過載保護等多種功能的新型機電聯(lián)動液控閘閥。本文針對礦井排水系統(tǒng)的具體工況,制定了調節(jié)閘閥的設計原則,對現(xiàn)有液控閘閥的執(zhí)行機構方案進行比較分析并最終確定了機電聯(lián)動液控閘閥的總體設計方案。在模塊化設計方法的基礎上,確定了閘閥的油缸執(zhí)行機構模塊、液壓控制集成模塊、機電聯(lián)動模塊等,結合solidworks自底向上的建模思想完成了閘閥的參數(shù)化設計和裝配模型的建立,對其工作原理及特點進行了詳細闡述。對機電聯(lián)動液控閘閥的液壓系統(tǒng)進行了設計及原理分析,對各液壓部件進行了參數(shù)設計及選擇。為了獲得液壓缸外負載的變化情況,利用Fluent軟件對閘板在管道中受水流體介質力的情況進行了仿真分析,將得到的油缸外負載結果導入到液壓仿真軟件Automation Stdio中,對閘閥進行了機電液聯(lián)合仿真,對其開閥特性和雙向節(jié)流調速閥的性能進行了仿真研究,驗證了液壓系統(tǒng)設計的可靠性。開發(fā)了一種適用于液控閘閥的手搖離合裝置,對其結構進行了設計。針對設計的虛擬樣機模型,首先利用ADAMS軟件進行了動力學仿真,對手搖變速箱的轉速及嚙合力進行了理論計算和仿真驗證,通過振動仿真對虛擬模型的振動原因進行了研究,從動力學角度驗證了模型傳動性能良好。其次,利用Ansys Workbench有限元分析軟件對手搖變速箱的重要部件行星架進行了靜力學分析和模態(tài)仿真,證明了行星架結構設計的合理性。對制造出的實體樣機進行了基本功能試驗,包括液壓系統(tǒng)的保壓測試和手搖離合裝置的功能測試。在此基礎上,對手搖離合裝置進行了振動特性實驗分析,包括實驗模態(tài)測試和工作狀態(tài)下振動頻率的測試,通過對實驗數(shù)據(jù)分析,找到了可能引起該裝置振動的原因,為裝置今后的結構優(yōu)化提供了參考依據(jù)。
[Abstract]:Valve is the key equipment in the pipeline fluid transportation system. It is widely used in many fields, such as petroleum, chemical industry, construction and so on. It also plays an important role in the mine drainage system, which is becoming more and more mature in automatic control technology. Its performance directly affects the safety and efficiency of the whole drainage system. In this paper, the basic structure of coal mine drainage system is introduced briefly, and then the key drainage equipment of this paper, the regulating gate valve, is introduced. The basic types of gate valves and their structural principles are introduced. The development stages of different gate valves, such as manual gate valves, electric gate valves and hydraulic gate valves, are analyzed, and the shortcomings and defects of each gate valve are pointed out. In view of the problems existing in gate valves at present, the purpose of this paper is to develop and design a kind of stepless adjustment of gate valve opening and closing speed, which can be used in mine drainage system at the same time. A new type of electromechanical hydraulic gate valve with various functions, such as hydraulic overload protection and so on, is actuated by hand clutch device under emergency condition. According to the concrete working condition of mine drainage system, the design principle of regulating gate valve is established in this paper. The scheme of actuating mechanism of hydraulic gate valve is compared and analyzed, and the overall design scheme of electromechanical hydraulic gate valve is finally determined. On the basis of the modular design method, the hydraulic control integration module, the electromechanical linkage module and so on are determined. The parametric design and assembly model of the gate valve are completed with the bottom-up modeling idea of solidworks. The working principle and characteristics are described in detail. The hydraulic system of electromechanical linkage hydraulic gate valve is designed and its principle is analyzed. The parameters of hydraulic components are designed and selected. In order to obtain the change of the load outside the hydraulic cylinder, a simulation analysis was carried out by using fluent software to simulate the load of the sluice plate in the pipeline, and the result of the load outside the cylinder was imported into the hydraulic simulation software Automation Stdio. The electro-hydraulic simulation of gate valve is carried out, and the characteristics of opening valve and the performance of bidirectional throttling speed regulating valve are simulated. The reliability of hydraulic system design is verified. A hand clutch device suitable for hydraulic gate valve was developed and its structure was designed. Aiming at the designed virtual prototype model, the dynamic simulation is carried out by Adams software, and the rotational speed and meshing force of the hand gearbox are calculated and verified theoretically, and the vibration reasons of the virtual model are studied by vibration simulation. The model transmission performance is proved to be good from the dynamic point of view. Secondly, the statics analysis and modal simulation of the planetary frame, an important component of the manual gearbox, are carried out by using the Ansys Workbench finite element analysis software, which proves the rationality of the design of the planetary frame structure. The basic functional tests of the prototype are carried out, including the hydraulic system pressure control test and the manual clutch device function test. On this basis, the vibration characteristics of the handshake clutch device are analyzed experimentally, including the experimental modal test and the vibration frequency test in the working state. Through the analysis of the experimental data, the possible causes of the vibration of the device are found. It provides a reference for the structure optimization of the device in the future.
【學位授予單位】：太原理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD442

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本文編號：2025023