本文選題：壓電泵 + 錐殼形單閥體��； 參考：《南京航空航天大學(xué)》2011年碩士論文

【摘要】：壓電泵是隨著壓電技術(shù)的日益成熟并被創(chuàng)造性的應(yīng)用于流體驅(qū)動(dòng)產(chǎn)生的新型流體驅(qū)動(dòng)器。與傳統(tǒng)泵(如齒輪泵或螺桿泵等)相比,壓電泵的驅(qū)動(dòng)源采用壓電驅(qū)動(dòng),省去了電動(dòng)機(jī)驅(qū)動(dòng),故有結(jié)構(gòu)簡單、體積小、電磁污染較小、流量控制精確并且能微量輸出的優(yōu)點(diǎn)�；谶@些優(yōu)點(diǎn)壓電泵在微小型方向上發(fā)展具有明顯優(yōu)勢,在小型化、微流量領(lǐng)域如生物工程、醫(yī)療、精密化學(xué)分析、制藥工程等有廣泛的應(yīng)用前景,已經(jīng)成為國內(nèi)外學(xué)者們研究的熱點(diǎn),使壓電泵驅(qū)動(dòng)技術(shù)日趨成熟,適用于不同領(lǐng)域的新型壓電泵不斷出現(xiàn)。 現(xiàn)有壓電泵尚不能很好的勝任在醫(yī)療、衛(wèi)生、保健等領(lǐng)域輸送任務(wù),主要是因?yàn)橛虚y泵閥體開閉的兩次撞擊效應(yīng)致使活體細(xì)胞死亡率上升而無閥泵的非閥類單向流動(dòng)部件產(chǎn)生的湍流與渦旋致使長鏈高分子發(fā)生纏繞失效。為了能夠同時(shí)實(shí)現(xiàn)減小閥體開閉撞擊效應(yīng)及增大輸出流量和壓力,我們提出構(gòu)建一種利用內(nèi)外不等錐度的軟質(zhì)錐殼形單閥體結(jié)構(gòu)的新型被動(dòng)閥壓電泵,對(duì)相關(guān)問題進(jìn)行了研究。首先,提出了內(nèi)外不等錐度的軟質(zhì)錐殼形單閥體壓電泵的結(jié)構(gòu)實(shí)施方案;然后,對(duì)內(nèi)外不等錐度的軟質(zhì)錐殼形閥體進(jìn)行了對(duì)閥體表面撓度隨著壓力變化而發(fā)生變化的理論分析;最后,對(duì)內(nèi)外不等錐度的軟質(zhì)錐殼形單閥體壓電泵進(jìn)行了實(shí)驗(yàn)驗(yàn)證。實(shí)驗(yàn)表明:在150V峰值電壓,500Hz頻率下驅(qū)動(dòng)時(shí),內(nèi)外不等錐度的軟質(zhì)錐殼形單閥體壓電泵的進(jìn)出口壓差可達(dá)到170mm。并實(shí)際測得壓差隨電壓的變化曲線,在一定范圍內(nèi),壓差隨施加電壓的升高而升高。實(shí)驗(yàn)證明了理論分析的正確性與實(shí)施方案的可行性。 主動(dòng)閥壓電泵控制繁瑣,結(jié)構(gòu)復(fù)雜,但克服了被動(dòng)閥閥體滯后性的缺點(diǎn),為了緩解被動(dòng)閥閥體的滯后問題,我們提出一種半主動(dòng)閥壓電泵,進(jìn)行了初步的結(jié)構(gòu)設(shè)計(jì)材料的選取,加工了樣機(jī)并進(jìn)行了初步的研究,獲得了較好的輸出效果。
[Abstract]:With the development of piezoelectric technology, piezoelectric pump is a new type of fluid driver, which is creatively applied to fluid drive. Compared with the traditional pump (such as gear pump or screw pump), the piezoelectric pump uses piezoelectric driving source, which saves the motor drive, so it has the advantages of simple structure, small volume, less electromagnetic pollution, accurate flow control and micro output. Based on these advantages, piezoelectric pumps have obvious advantages in the development of micro-type, and have wide application prospects in miniaturization and micro-flow fields such as biological engineering, medical treatment, precision chemical analysis, pharmaceutical engineering, etc. It has become a hot topic for scholars at home and abroad, which makes the driving technology of piezoelectric pump mature day by day, and the new type of piezoelectric pump suitable for different fields appears constantly. The existing piezoelectric pumps are still not well qualified for transportation tasks in the fields of medical treatment, hygiene, health care, and so on. The main reason is that the two impact effects of valve body opening and closing increase the cell death rate of living body, but the turbulence and vortex produced by non-valve one-way flow components without valve pump cause the winding failure of long chain polymer. In order to reduce the open and close impact effect of valve body and increase the output flow and pressure simultaneously, we propose a new passive valve piezoelectric pump with soft conical shell single body structure with different taper inside and outside. The related problems are studied. Firstly, the structure implementation scheme of soft conical shell single body piezoelectric pump with inner and outer unequal taper is put forward, and then the theoretical analysis of the change of body surface deflection with the change of pressure is carried out for the soft conical shell body with inner and outer unequal taper. Finally, the soft conical shell single body piezoelectric pump with different internal and external taper is verified experimentally. The experimental results show that the inlet and outlet pressure difference of soft conical shell single valve piezoelectric pump with different internal and external taper can reach 170 mm when driven at 150V peak voltage of 500Hz frequency. The curves of voltage difference with voltage are measured. In a certain range, the pressure difference increases with the increase of applied voltage. The experiment proves the correctness of the theoretical analysis and the feasibility of the implementation scheme. The control of the active valve pressure pump is complicated and the structure is complicated, but it overcomes the disadvantage of the hysteresis of the passive valve body. In order to alleviate the hysteresis problem of the passive valve body, we propose a semi-active valve piezoelectric pump, and select the primary structural design material. The prototype was machined and the preliminary research was carried out, and a good output effect was obtained.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2011
【分類號(hào)】：TH38

【引證文獻(xiàn)】

相關(guān)博士學(xué)位論文 前2條

1 胡笑奇;非回轉(zhuǎn)非容積型無閥壓電泵的動(dòng)力學(xué)分析和實(shí)驗(yàn)研究[D];南京航空航天大學(xué);2012年

2 吳越;壓電泵動(dòng)力學(xué)分析與優(yōu)化設(shè)計(jì)[D];吉林大學(xué);2013年

相關(guān)碩士學(xué)位論文 前1條

1 林曉光;螺旋流管無閥壓電泵實(shí)驗(yàn)與研究[D];南京航空航天大學(xué);2012年

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本文編號(hào)：1914377