【摘要】：為了實(shí)時(shí)檢測(cè)液態(tài)肥變量施肥系統(tǒng)中排肥口的流量,研制了一種液態(tài)肥扭力靶式流量計(jì)。采用力-扭力管-應(yīng)變電壓的轉(zhuǎn)換方式設(shè)計(jì)了流量計(jì)結(jié)構(gòu),建立了流量與應(yīng)變電壓的數(shù)學(xué)模型;采用FLUENT軟件分析了不同靶片形狀和不同直徑比對(duì)扭力靶式流量計(jì)性能的影響;制作樣機(jī)并對(duì)扭力靶式流量計(jì)的性能進(jìn)行了校驗(yàn)實(shí)驗(yàn)。實(shí)驗(yàn)結(jié)果表明,該扭力靶式流量計(jì)測(cè)量結(jié)果穩(wěn)定可靠,可測(cè)流量范圍為0.2 m3/h~3.9 m3/h,誤差小于2.0%FS。滿足液態(tài)肥變量施肥系統(tǒng)中流量測(cè)量的要求。
[Abstract]:In order to detect the flow rate of liquid fertilizer variable rate fertilizer system in real time, a liquid fertilizer torque target Flowmeter was developed. The structure of Flowmeter is designed by using the conversion mode of force-torque tube and strain voltage, and the mathematical model of flow and strain voltage is established, and the influence of different target shape and diameter ratio on the performance of torque target Flowmeter is analyzed by FLUENT software. The prototype is made and the performance of torque target Flowmeter is verified. The experimental results show that the measurement results of the torque target Flowmeter are stable and reliable, the measured flow range is 0.2 m3/h~3.9 m ~ 3 鈮，

本文編號(hào)：2492691