【摘要】：風(fēng)機性能試驗是風(fēng)機設(shè)計、生產(chǎn)和檢驗中必不可少的環(huán)節(jié)。目前,許多風(fēng)機生產(chǎn)廠家和研究單位仍采用手工方式進行測試,存在勞動強度大、工作效率低的缺點。為了實現(xiàn)試驗過程的自動化,本文采用虛擬儀器技術(shù)對風(fēng)機性能試驗系統(tǒng)進行了設(shè)計開發(fā)。首先,依據(jù)標(biāo)準GB/T1236-2000進行總體結(jié)構(gòu)設(shè)計。試驗系統(tǒng)由風(fēng)機驅(qū)動系統(tǒng)、標(biāo)準試驗風(fēng)筒以及測控系統(tǒng)組成,本文采用C型管道進氣裝置設(shè)計了四套不同直徑的試驗風(fēng)筒以適應(yīng)不同型號的風(fēng)機。為了實現(xiàn)風(fēng)機工況的自動調(diào)節(jié),對流量調(diào)節(jié)閥及其執(zhí)行機構(gòu)進行了設(shè)計。此外,為了研究風(fēng)筒內(nèi)部流場沿徑向的速度分布情況,還設(shè)計了一套風(fēng)速自動測試裝置。同時,對測控系統(tǒng)的硬件和軟件進行了詳細的設(shè)計。硬件部分主要包括傳感器選型和數(shù)據(jù)采集卡選型。軟件部分以LabVIEW為平臺,采用模塊化編程和面向組件的設(shè)計方法,實現(xiàn)了風(fēng)機工況的自動調(diào)節(jié)、測試信號的自動采集、試驗數(shù)據(jù)的自動處理、性能曲線的自動繪制以及試驗報告的自動生成,通過與數(shù)據(jù)庫連接還實現(xiàn)了試驗數(shù)據(jù)的存儲、查詢和修改功能。為了合理地設(shè)計試驗裝置,本文采用CFD軟件對試驗裝置的內(nèi)部流場進行模擬計算。通過理論分析和數(shù)值模擬相結(jié)合的方法,探討了C型進氣裝置的軸承支座對軸流風(fēng)機出口氣流的阻礙作用,計算了軸承支座與風(fēng)機出口的距離大小對風(fēng)機性能曲線的影響,從而為合理地設(shè)計軸承支座與風(fēng)機出口的距離提供依據(jù)。同時,研究了順開式百葉閥和對開式百葉閥對風(fēng)筒內(nèi)部流場的影響,計算并比較了兩者流場的速度、壓力、流線以及湍流動能分布情況,此外還對比了兩種閥門的流量特性,為流量調(diào)節(jié)裝置的改進提供參考。最后,為了對風(fēng)機性能試驗系統(tǒng)進行驗證,本文在原有設(shè)計方案的基礎(chǔ)上加以簡化,搭建了一套小型試驗裝置,實際測試了軸流風(fēng)機的性能并繪制出風(fēng)機性能曲線。在試驗裝置的調(diào)試過程中,系統(tǒng)運行穩(wěn)定、可靠,能夠滿足風(fēng)機性能試驗自動控制和自動采集的要求。
[Abstract]:Fan performance test is an essential link in fan design, production and inspection. At present, many fan manufacturers and research units still use manual testing, which has the disadvantages of high labor intensity and low working efficiency. In order to realize the automation of test process, the performance test system of fan is designed and developed by using virtual instrument technology. First of all, according to the standard GB/T1236-2000 for the overall structure design. The test system consists of fan drive system, standard test duct and measurement and control system. In this paper, four sets of test air ducts with different diameters are designed to suit different types of fans. In order to realize the automatic adjustment of fan working condition, the flow regulating valve and its actuating mechanism are designed. In addition, in order to study the velocity distribution of the flow field along the radial direction, a set of automatic measurement device for wind speed is designed. At the same time, the hardware and software of the measurement and control system are designed in detail. The hardware includes sensor selection and data acquisition card selection. Based on LabVIEW, modular programming and component-oriented design method are used to realize automatic adjustment of fan operating conditions, automatic acquisition of test signals and automatic processing of test data. The automatic drawing of the performance curve and the automatic generation of the test report can also realize the functions of storing, querying and modifying the experimental data by connecting with the database. In order to design the test device reasonably, this paper uses CFD software to simulate and calculate the internal flow field of the test device. Through the combination of theoretical analysis and numerical simulation, the effect of bearing support of C type air intake device on the outlet flow of axial fan is discussed, and the influence of the distance between bearing support and fan outlet on fan performance curve is calculated. It provides a basis for the reasonable design of the distance between the bearing support and the outlet of the fan. At the same time, the influence of the parallel valve and the open valve on the flow field in the tuyere is studied. The velocity, pressure, streamline and turbulent kinetic energy distribution of the flow field are calculated and compared, and the flow characteristics of the two valves are also compared. It provides a reference for the improvement of flow regulating device. Finally, in order to verify the performance test system of the fan, this paper simplifies the original design scheme, builds a set of small test equipment, tests the performance of the axial fan and draws the performance curve of the fan. In the debugging process of the test device, the system runs stably and reliably, and can meet the requirements of automatic control and automatic collection of fan performance test.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TH43

【參考文獻】

相關(guān)期刊論文 前10條

1 施鑫;甄楊;劉麗璋;;淺談流量儀表的技術(shù)現(xiàn)狀及發(fā)展方向[J];資源節(jié)約與環(huán)保;2014年10期

2 王樹東;孫野;梁國棟;;基于LabVIEW和FPGA在數(shù)據(jù)采集系統(tǒng)中的開發(fā)設(shè)計[J];自動化與儀器儀表;2014年06期

3 周秀君;;一種低成本電子測速儀表的設(shè)計[J];電子技術(shù);2013年01期

4 張輝;;火電機組主蒸汽流量測量方法對比及發(fā)展趨勢[J];工業(yè)儀表與自動化裝置;2012年06期

5 宋向前;趙振江;;電動推桿式地震模擬平臺控制系統(tǒng)的設(shè)計[J];常州工學(xué)院學(xué)報;2012年02期

6 李振杰;;濕度測量方法研究[J];計量與測試技術(shù);2011年06期

7 楊會明;謝賢平;楊時業(yè);;礦井通風(fēng)機氣動性能測試技術(shù)發(fā)展綜述[J];云南冶金;2010年06期

8 鄭美茹;;基于CFD的汽車排氣歧管流場分析[J];內(nèi)燃機與配件;2010年11期

9 趙博;;測速儀在熔噴和紡黏流場中的應(yīng)用[J];聚酯工業(yè);2009年04期

10 華耀南;饒江;張登峰;李文洲;;風(fēng)機進氣與出氣試驗性能的換算[J];通用機械;2008年10期

相關(guān)碩士學(xué)位論文 前4條

1 劉云;風(fēng)機性能綜合測試系統(tǒng)的研究與開發(fā)[D];湖南大學(xué);2008年

2 劉晶;結(jié)構(gòu)與非結(jié)構(gòu)網(wǎng)格的生成、轉(zhuǎn)化及應(yīng)用[D];南京理工大學(xué);2006年

3 盧華峰;基于虛擬儀器的蓄能器測試系統(tǒng)研究與開發(fā)[D];廣東工業(yè)大學(xué);2006年

4 關(guān)貞珍;基于虛擬儀器的風(fēng)機性能試驗自動測試系統(tǒng)[D];河北農(nóng)業(yè)大學(xué);2002年

，

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