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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/78030


    Title: 清潔用除塵槍系統噪音改善之研究;Study on the Noise Improvement of Cleaning air nozzle System
    Authors: 李育宏;Lee, Yu-Hung
    Contributors: 環境工程研究所在職專班
    Keywords: 除塵槍;聚氨酯管;尼龍管;中壓軟管;聚氯乙烯管;圓形除塵槍;方形除塵槍;Polyurethane;Polyamide;Polyethylene;Polyvinyl Chloride;air nozzle;Circular air nozzle;Square air nozzle
    Date: 2018-08-20
    Issue Date: 2018-08-31 15:09:15 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 某工廠使用的除塵槍執行清潔作業,針對清潔作業測定個人噪音暴露劑量逼近100分貝,法定規範個人噪音暴露劑量達90分貝以上就要執行作業管制,藉由改善設備降低噪音暴露。分析除塵槍噪音影響因素有: 除塵槍吹嘴、延伸管材質管徑和長度以及空氣壓縮機的噪音。本研究來採用模擬系統化方式執行除塵槍系統噪音改善,氣體產生設備(空氣壓縮機)、延伸管、除塵槍及消音吹嘴,實驗研究最後進行最佳化組合及分析以獲取,符合噪音管制標準和有足夠氣體清潔能力即可以推動85g的物體超過200公分以上,符合經濟效益的消音除塵槍系統。本研進行除塵槍系統改善,第一實驗設計與方法、第二設備改善前的噪音量測、第三不同吹嘴與不同延伸管材質管徑長度的噪音分析量測比對、第四除塵槍系統清潔能力與噪音改善最佳化組合、第五除塵槍噪音改善前後比較分析。氣體供應設備的位置在7F獨立空壓機室與3F作業場所對於噪音的影響是可以忽略的。測定實驗選用4種不同材質延伸管分別為聚氨酯管、尼龍管、中壓軟管和聚氯乙烯管。除塵槍所需要消音吹嘴要符合作業清潔使用,所以選用可以大範圍清潔的方形消音吹嘴2種型號為Silvent 920A、Plastic Air Nozzle以及內部清潔的圓形消音吹嘴共2種型號為Silven t701、Silvent 209。經過實際實驗組合和噪音分析,聚氯乙烯管因無法承受7大氣體壓力破裂無法採用,其他材質延伸管針對個人噪音暴露都在99~100分貝之間得知延伸管材質對噪音影響是有限的,在延伸管選用聚氨酯管比起其他材質更有價格優勢,故選用聚氨酯管作為後續實驗所需材質。除塵槍4種消音吹嘴的噪音都符合低於90分貝,該四種消音吹嘴將與聚氨酯管三種管徑為: 96 mm、65 mm、40 mm,進行氣體清潔能力最佳化組合實驗。結論延伸管與除塵槍在消音吹嘴的組合中,消音空氣吹嘴型號為Silven t701在任何規格管徑其清潔力不符合要求,然而Silvent 209在延伸管40 mm管徑下未達清潔標準所以不採用,最後延伸管管徑96 mm、65 mm都符合噪音標準和清潔要求,在延伸管的管徑選擇上65 mm的管徑更具有價格優勢。;The air nozzle used by food factories produce recorded 100dB of noise for employees. The law requires exposure to noises over 90dB to be under regulatory control in order to reduce noise exposure of the equipment. This study adopts air nozzle system noise reduction experiments, to undergo optimal combination and comparisons, for air nozzle systems that meet noise and cleaning capability standards. For the study′s enhancement of air nozzle systems, the first step is to decide on measuring method and equipment. The second step is to engage in measurement, analysis and comparison of the material, pipe diameter, pipe length of the extension tube and air nozzle noise level. The third step is to measure the noise and cleaning ability of air nozzles. The fourth step is optimal integration. The fifth step is before and after comparison of air nozzle noise and cleaning ability. The measurement laboratory test uses 4 different extension tubes: Polyurethane, Polyamide, Polyethylene and Polyvinyl Chloride. The air nozzles need to fulfill cleaning usage functions, with Silvent 920A, Plastic Air Nozzle model square air nozzles and Silven t701, Silvent 209 model circular air nozzles undergoing combination analysis. The noise exposure of the extension tube was 99~100dB proving hat its material has little effect on noise level. Using Polyurethane extension tube is more cost effective and is to be used for future research. All 4 silencing nozzles have achieved a noise level of below 90dB. The four silencing nozzles and three Polyurethane pipes have the diameter of 96mm, 65mm, 40mm, which undergoes optimal combination experiments. Results show that within the combination of extension tubes and air nozzles, the cleaning ability of Silven T7001 and Silvent 20 silencer nozzles do not meet requirement standards. Lastly, the extension tubes of 96mm and 65mm in diameter all meet the relevant standards, with the 65mm pipe diameter being the most cost effective.
    Appears in Collections:[環境工程研究所碩士在職專班] 博碩士論文

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