燈泡貫流式機(jī)組水輪機(jī)調(diào)節(jié)系統(tǒng)及其位移傳感器的研究
本文選題:燈泡貫流式水輪機(jī) + 調(diào)節(jié)系統(tǒng)仿真 ; 參考:《南昌工程學(xué)院》2015年碩士論文
【摘要】:近年來(lái)隨著我國(guó)不斷加大對(duì)中低水頭水電資源的開(kāi)發(fā),燈泡貫流式水輪機(jī)得到了越來(lái)越廣泛的應(yīng)用。作為低水頭、大流量的燈泡貫流式水輪機(jī)具有能量轉(zhuǎn)化效率高、尺寸小、重量輕、空化性能好等諸多優(yōu)點(diǎn),是開(kāi)發(fā)中低水頭水電資源經(jīng)濟(jì)實(shí)用的理想機(jī)型。而調(diào)速器又是保障燈泡貫流式水輪機(jī)安全穩(wěn)定運(yùn)行的重要控制設(shè)備,因此對(duì)于燈泡貫流式水輪機(jī)調(diào)速器研究具有重要的意義。 本文首先通過(guò)理論分析,建立了燈泡貫流式水輪機(jī)調(diào)節(jié)系統(tǒng)的數(shù)學(xué)模型,并采用MATLAB對(duì)調(diào)節(jié)系統(tǒng)進(jìn)行了仿真分析,仿真結(jié)果同燈泡貫流式水輪機(jī)調(diào)速器現(xiàn)場(chǎng)實(shí)驗(yàn)作了對(duì)比分析,從而優(yōu)化了仿真參數(shù),,同時(shí)也為燈泡貫流式水輪機(jī)調(diào)速系統(tǒng)的研究提供了理論支持。此外,本文針對(duì)傳統(tǒng)的水輪機(jī)調(diào)速器導(dǎo)葉和槳葉傳感器存在著測(cè)量精度不高、響應(yīng)速度慢、抗干擾能力差等不足,研究了一種基于超磁致伸縮的非接觸式位移傳感器,并對(duì)其工作原理和電路進(jìn)行了優(yōu)化設(shè)計(jì)分析。該磁致伸縮位移傳感器具有測(cè)量精度高、響應(yīng)速度快、抗干擾能力強(qiáng)且耐高溫高壓,將有利于解決目前調(diào)速系統(tǒng)的調(diào)節(jié)精度低和響應(yīng)速度慢等問(wèn)題。
[Abstract]:In recent years, with the increasing development of hydropower resources in China, bulb tubular turbine has been more and more widely used. As a low head, large flow bulb tubular turbine has many advantages, such as high energy conversion efficiency, small size, light weight, good cavitation performance and so on. It is an ideal model for developing low water head hydropower resources economically and practically. The governor is an important control equipment to ensure the safe and stable operation of bulb tubular turbine, so it is of great significance for the research of bulb tubular turbine governor. In this paper, the mathematical model of the regulating system of bulb tubular turbine is established by theoretical analysis, and the control system is simulated by MATLAB. The simulation results are compared with the field experiment of bulb tubular turbine governor. The simulation parameters are optimized and the theoretical support is provided for the research of bulb tubular turbine speed regulation system. In addition, a non-contact displacement sensor based on giant magnetostriction is studied in this paper, aiming at the shortcomings of traditional turbine governor guide blade and blade sensor, such as low measuring precision, slow response speed and poor anti-interference ability. The working principle and circuit are optimized and analyzed. The magnetostrictive displacement sensor has the advantages of high measuring precision, fast response speed, strong anti-interference ability and high temperature and high pressure resistance, which will help to solve the problems of low adjusting precision and slow response speed of the current speed regulating system.
【學(xué)位授予單位】:南昌工程學(xué)院
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類(lèi)號(hào)】:TK733.8;TP212
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