本文選題：隨鉆測(cè)量 + 脈沖波形��； 參考：《中國(guó)石油大學(xué)(華東)》2015年碩士論文

【摘要】：目前隨鉆測(cè)量信息傳輸?shù)姆椒ㄖ饕兴姆N:有線電纜法、聲波法、電磁波法和鉆井液脈沖法。其中鉆井液脈沖傳輸方式有三種:正脈沖、負(fù)脈沖和連續(xù)波。其中連續(xù)波方式傳輸速率相對(duì)較高,可達(dá)6~12 Bit/s,且抗干擾能力強(qiáng),是一項(xiàng)較為有前途的技術(shù),目前國(guó)內(nèi)尚無(wú)商業(yè)應(yīng)用的連續(xù)波泥漿脈沖器產(chǎn)品。因此研制高速率的連續(xù)波泥漿脈沖器具有廣闊前景。連續(xù)波泥漿脈沖器產(chǎn)生出的信號(hào)具有多樣性。由于正弦波頻譜能量集中,抗干擾能力強(qiáng),對(duì)電機(jī)的控制易于實(shí)現(xiàn),使得電機(jī)和轉(zhuǎn)閥壽命延長(zhǎng),因此是目前采用較為廣泛的載波形式。在正弦波信號(hào)發(fā)生器中,轉(zhuǎn)閥結(jié)構(gòu)是其基礎(chǔ),轉(zhuǎn)閥的結(jié)構(gòu)設(shè)計(jì)優(yōu)劣直接關(guān)系到輸出波形的質(zhì)量以及電機(jī)所需扭矩的大小,因此對(duì)轉(zhuǎn)閥結(jié)構(gòu)進(jìn)行設(shè)計(jì)具有重要的實(shí)際工程意義。本文通過(guò)有限元仿真和實(shí)驗(yàn)相結(jié)合的手段對(duì)轉(zhuǎn)閥結(jié)構(gòu)進(jìn)行設(shè)計(jì)。本文以正弦波脈沖發(fā)生器為研究對(duì)象,以提高正弦波信號(hào)質(zhì)量和降低轉(zhuǎn)子所受扭矩為目的,以理論分析和有限元優(yōu)化為手段,在現(xiàn)有轉(zhuǎn)閥的基礎(chǔ)上進(jìn)行改進(jìn),通過(guò)改變轉(zhuǎn)閥的開(kāi)口形狀、定轉(zhuǎn)子間隙大小、電機(jī)加減速等,研究輸出的正弦波信號(hào)特點(diǎn)以及轉(zhuǎn)子所受扭矩特點(diǎn)。從而為進(jìn)一步研制具有自主知識(shí)產(chǎn)權(quán)的正弦波脈沖信號(hào)發(fā)生器提供技術(shù)支撐。本文首先對(duì)前人所設(shè)計(jì)的曲線閥口參數(shù)化模型進(jìn)行的優(yōu)化,把定轉(zhuǎn)子間隙作為一個(gè)影響因素加以考慮,通過(guò)仿真手段對(duì)曲線閥口的形狀做出優(yōu)化,使曲線閥口轉(zhuǎn)閥產(chǎn)生的壓力波信號(hào)更加趨近正弦波。其次,本文利用扇形閥口轉(zhuǎn)閥,通過(guò)改變電機(jī)加減速,實(shí)現(xiàn)產(chǎn)生出的壓力波信號(hào)盡可能趨近正弦波。文章通過(guò)仿真分析和實(shí)驗(yàn)研究對(duì)兩種不同產(chǎn)生正弦波方式的進(jìn)行了對(duì)比,得到實(shí)現(xiàn)產(chǎn)生正弦波信號(hào)所需要條件,具有一定的參考價(jià)值,可以為轉(zhuǎn)閥設(shè)計(jì)提供參考依據(jù)。
[Abstract]:At present, there are four main methods of information transmission while drilling: cable method, acoustic wave method, electromagnetic wave method and drilling fluid pulse method. There are three modes of drilling fluid pulse transmission: positive pulse, negative pulse and continuous wave. The transmission rate of continuous wave mode is relatively high, up to 6 ~ 12 bit / s, and has strong anti-jamming ability. It is a promising technology. At present, there is no commercial application of continuous wave mud pulsator in China. Therefore, the development of high-speed continuous wave mud pulse apparatus has a broad prospect. Continuous wave mud pulsator produces a variety of signals. Because the sine wave spectrum energy is concentrated, the anti-interference ability is strong, and the control of the motor is easy to realize, the life of the motor and the rotary valve is prolonged, so it is widely used as carrier at present. In sinusoidal signal generator, the structure of rotary valve is its foundation. The structure design of rotary valve is directly related to the quality of output waveform and the size of torque required by motor, so it is of great practical significance to design the structure of rotary valve. In this paper, the structure of rotary valve is designed by means of finite element simulation and experiment. In this paper, the sinusoidal pulse generator is studied to improve the signal quality of sinusoidal wave and to reduce the torque of rotor. By means of theoretical analysis and finite element optimization, this paper improves on the existing rotary valve. By changing the opening shape of the rotary valve, the clearance between the stator and rotor, the acceleration and deceleration of the motor, the characteristics of the output sinusoidal signal and the torque of the rotor are studied. It provides technical support for the further development of sinusoidal pulse generator with independent intellectual property rights. This paper first optimizes the parametric model of curve valve designed by predecessors, considers the clearance of stator and rotor as an influence factor, and optimizes the shape of curve valve by means of simulation. Make the curve valve turn valve pressure wave signal closer to the sine wave. Secondly, by changing the acceleration and deceleration of the motor, the pressure wave signal produced by the sector valve turn valve is as close as possible to the sinusoidal wave. Through simulation analysis and experimental study, this paper compares the two different sinusoidal wave generation methods, and obtains the necessary conditions for producing sinusoidal signal, which has certain reference value and can provide reference basis for the design of rotary valve.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE927

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