發(fā)布時(shí)間：2018-05-25 22:31

  本文選題：油井測(cè)位 + 高壓氣動(dòng)��； 參考：《浙江大學(xué)》2012年碩士論文

【摘要】：高壓氣動(dòng)系統(tǒng)因其特有能量密度高和爆發(fā)力強(qiáng)等特性在武器裝備和回聲測(cè)距等領(lǐng)域得到廣泛的應(yīng)用。油井液面測(cè)量對(duì)于油井開(kāi)采有著重大參考意義,而氣控閥是通過(guò)氣體發(fā)聲用于油井測(cè)位的關(guān)鍵部件,廣泛用于各個(gè)油田開(kāi)采。鑒于已有的油井測(cè)位氣控閥存在結(jié)構(gòu)復(fù)雜,不能自動(dòng)控制等特點(diǎn),而且很少有人對(duì)用于該領(lǐng)域的閥進(jìn)行理論研究。本文對(duì)用于油井測(cè)位的氣控閥進(jìn)行了探索性研究,研制了一種內(nèi)外爆氣控閥,并系統(tǒng)分析了內(nèi)外爆氣控閥的工作機(jī)理。本論文的主要內(nèi)容如下： 第一章概述了氣動(dòng)技術(shù)的優(yōu)缺點(diǎn)以及內(nèi)外爆氣控閥相關(guān)技術(shù)的發(fā)展?fàn)顩r,闡述了課題的來(lái)源和研究意義,并提出了本文要開(kāi)展的主要工作和難點(diǎn)及創(chuàng)新之處。 第二章概述了氣控閥回聲測(cè)距的工作原理,并得出氣控閥的設(shè)計(jì)要求。說(shuō)明了本文研制的內(nèi)外爆氣控閥的工作原理和結(jié)構(gòu)特點(diǎn)。該閥利用高速小流量小通徑的先導(dǎo)閥去驅(qū)動(dòng)大流量大通徑的主閥芯。主閥芯采用三級(jí)臺(tái)階式的差壓面積結(jié)構(gòu)設(shè)計(jì),并通過(guò)阻尼孔將高壓腔和控制腔連接起來(lái),以便實(shí)現(xiàn)工作狀態(tài)下主閥芯自動(dòng)氣復(fù)位和氣密封。 第三章深入研究了內(nèi)外爆氣控閥的動(dòng)態(tài)特性,提出以控制腔充放氣壓力轉(zhuǎn)折點(diǎn)為標(biāo)志,通過(guò)控制腔的壓力特性來(lái)描述氣控閥的動(dòng)態(tài)特性�；跓崃W(xué)、運(yùn)動(dòng)學(xué)及氣壓傳動(dòng)等理論上詳細(xì)建立了內(nèi)外爆氣控閥系統(tǒng)的數(shù)學(xué)模型。通過(guò)仿真對(duì)阻尼孔通徑、控制腔體積等影響內(nèi)外爆氣控閥動(dòng)態(tài)特性的因素進(jìn)行了分析和優(yōu)化。 第四章搭建了內(nèi)外爆氣控閥的實(shí)驗(yàn)系統(tǒng)。實(shí)驗(yàn)證明,該內(nèi)外爆氣控閥在原理上是可行的,能夠?qū)崿F(xiàn)內(nèi)外爆為一體。在上游壓力為9bar的情況下,內(nèi)爆工作模式和外爆工作模式主閥芯的開(kāi)啟時(shí)間分別為13ms和8ms,能夠滿足內(nèi)外爆氣控閥的性能要求。實(shí)驗(yàn)分析了先導(dǎo)閥通徑、阻尼孔節(jié)流面積、上下游工作壓力和控制腔體積對(duì)閥芯動(dòng)態(tài)響應(yīng)特性的影響。通過(guò)在內(nèi)爆模式下進(jìn)行仿真曲線和實(shí)驗(yàn)曲線的對(duì)比來(lái)驗(yàn)證仿真模型的正確性。 第五章對(duì)全文的工作進(jìn)行了總結(jié),并展望了后續(xù)的工作。
[Abstract]:High pressure pneumatic system has been widely used in weapon equipment and echo ranging because of its high energy density and strong explosive force. Oil well level measurement is of great reference significance for oil well production, and gas control valve is the key component of oil well location measurement by gas sound, and is widely used in various oil fields. In view of the fact that the existing gas control valves for oil wells are complex in structure and can not be automatically controlled, there are few theoretical studies on the valves used in this field. In this paper, an exploratory study on the gas control valve used in oil well position measurement is carried out, a kind of internal and external explosion gas control valve is developed, and the working mechanism of the internal and external explosion gas control valve is analyzed systematically. The main contents of this thesis are as follows: The first chapter summarizes the advantages and disadvantages of the pneumatic technology and the development of the internal and external explosion valve related technologies, expounds the source and research significance of the subject, and puts forward the main work, difficulties and innovations to be carried out in this paper. In the second chapter, the working principle of echo ranging of gas control valve is summarized, and the design requirements of gas control valve are obtained. The working principle and structure characteristics of the internal and external explosion valve developed in this paper are explained. The valve uses high-speed, small-flow, small-diameter pilot valves to drive large-flow Chase-diameter main spools. The main valve core is designed with three-stage differential pressure area structure, and the high pressure cavity and control cavity are connected by damping hole to realize automatic gas reset and gas seal of the main valve core in working state. In the third chapter, the dynamic characteristics of the internal and external explosion valve are studied in depth, and the dynamic characteristics of the gas controlled valve are described by the pressure characteristic of the control chamber, which is marked by the turning point of the pressure of the control chamber. Based on thermodynamics, kinematics and pneumatic transmission, the mathematical model of internal and external explosion valve system is established in detail. The factors affecting the dynamic characteristics of the internal and external explosion valve such as the diameter of the damping hole and the volume of the control chamber are analyzed and optimized by simulation. In chapter 4, the experimental system of internal and external explosion valve is built. The experimental results show that the inner and outer explosion control valve is feasible in principle and can realize the internal and external explosion as a whole. When the upstream pressure is 9bar, the opening time of the main valve core in the implosion mode and the external exploding mode is 13ms and 8msrespectively, which can meet the performance requirements of the internal and external explosion gas control valve. The effects of pilot valve diameter, throttle area of damping hole, upstream and downstream working pressure and control chamber volume on the dynamic response characteristics of valve core were analyzed experimentally. The correctness of the simulation model is verified by comparing the simulation curve with the experimental curve in implosion mode. The fifth chapter summarizes the work of the full text, and looks forward to the follow-up work.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH134

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本文編號(hào)：1934885