本文選題：黃河泥沙分離　切入點：斜板間距　出處：《內(nèi)蒙古農(nóng)業(yè)大學》2014年碩士論文

【摘要】：水資源分布不均勻和農(nóng)業(yè)灌溉用水之間的矛盾制約著社會的發(fā)展,充分利用灌區(qū)周邊各種水資源是解決矛盾的最有效方法。黃河是我國北方農(nóng)業(yè)主要灌溉水源,然而黃河水泥沙含量大,不能直接用滴灌系統(tǒng)灌溉農(nóng)田,因此急需我們?nèi)パ芯績艋吆沉克难b置。 本文結合前期初步試驗結果,深入研究多級斜板分離裝置在改變斜板間距組合和角度后對泥沙分離效率的影響；在不同濃度和流量的動水試驗條件下,分析各級分離裝置溢流濃度、泥沙分離率和中值粒徑；采用正交試驗、方差分析和極差分析本裝置各個試驗參數(shù)的最優(yōu)組合,為以后制作大流量的分沙裝置提供借鑒。 本次試驗主要研究內(nèi)容有：首先根據(jù)斜板傾角與泥沙受力情況計算出斜板理論分離率為65.1%,要小于試驗結果中絕大部分的總分離率,驗證了該裝置對于泥沙分離的優(yōu)越性；其次用四種斜板組合分別進行不同濃度和流量的試驗,確定出第一級、第二級和第三級斜板間距分別為8mm、5mm和3mm為該裝置最優(yōu)斜板組合,并且調(diào)整斜板寬方向傾斜角度,得到斜板在長寬方向分別為45°和60°有利于泥沙沉降；最后采用正交試驗、方差分析和極差分析研究了裝置各參數(shù)對分離率的影響,結果得出影響分離率參數(shù)主次排列為斜板間距、進流口流量和泥沙濃度。 進行全部內(nèi)容概括,在分析得出結論的同時,利用相似原理對裝置進行理論擴大,計算出設備各個參數(shù)相應放大后的值,以期在將來制作大流量分離裝置時提供借鑒,并對有待深入研究的問題進行探討。
[Abstract]:The contradiction between the uneven distribution of water resources and agricultural irrigation water restricts the development of society. The most effective way to solve the contradiction is to make full use of all kinds of water resources around irrigation areas.The Yellow River is the main irrigation water source for agriculture in the north of China. However, the content of cement sediment in the Yellow River is so large that the drip irrigation system cannot be directly used to irrigate farmland. Therefore, it is urgent for us to study the equipment for purifying high sediment content water.Based on the preliminary experimental results, this paper studies the effect of multi-stage inclined plate separation device on sediment separation efficiency after changing the combination and angle of inclined plate spacing, and under the conditions of dynamic water test with different concentration and flow rate.The overflow concentration, sediment separation rate and median particle size of each stage separation device are analyzed, and the optimum combination of each test parameter of the device is analyzed by orthogonal test, variance analysis and range analysis, which provides a reference for making the sand separation device with large discharge in the future.The main contents of this experiment are as follows: firstly, the theoretical separation rate of inclined plate is 65.1, which is smaller than the total separation rate of most of the test results, according to the inclined angle of inclined plate and the stress of sediment, which verifies the superiority of the device for sediment separation.Secondly, the experiments of different concentration and flow rate were carried out with four kinds of sloping plate combinations, and it was determined that the first stage, the second stage and the third stage were 8 mm / 5 mm and 3mm, respectively, as the optimal inclined plate combination, and the inclined angle of the wide direction of the inclined plate was adjusted.The results show that 45 擄and 60 擄of inclined plate in the direction of length and width are favorable to sediment sedimentation. Finally, the effects of the parameters of the device on the separation rate are studied by orthogonal test, variance analysis and range analysis.The results show that the main and secondary parameters affecting the separation rate are inclined plate spacing, inlet discharge and sediment concentration.The whole content is summarized, and at the same time, the principle of similarity is used to expand the theory of the device and calculate the corresponding magnified value of each parameter of the equipment, in order to provide reference for the manufacture of the large flow separation device in the future.The problems to be further studied are also discussed.
【學位授予單位】：內(nèi)蒙古農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TV149

【參考文獻】

相關期刊論文 前10條

1 中國工程院“21世紀中國可持續(xù)發(fā)展水資源戰(zhàn)略研究”項目組;中國可持續(xù)發(fā)展水資源戰(zhàn)略研究綜合報告[J];中國工程科學;2000年08期

2 劉希邈;沈本賢;范志偉;徐峰;李楠;徐立群;;V形斜板強化接觸絮凝沉淀設備的研發(fā)與應用[J];中國給水排水;2009年23期

3 張永亮,劉凡清,朱臻;新型同向流斜板沉淀池試驗研究[J];工業(yè)水處理;2005年01期

4 陳小林;;對提高斜管沉淀池沉泥效率的探討[J];城鎮(zhèn)供水;2010年03期

5 馬學良,吳曉光,蘇音,王虎;我國滴灌技術應用發(fā)展若干問題分析[J];節(jié)水灌溉;2004年05期

6 鄧培德;;平流式沉淀池的懸浮物去除率計算[J];建筑技術通訊(給水排水);1981年02期

7 肖新棉,董文楚,楊金忠,羅金耀;微灌用疊片式砂過濾器性能試驗研究[J];農(nóng)業(yè)工程學報;2005年05期

8 穆乃君;張昕;李光永;陳瑾;馮海燕;;內(nèi)鑲片式齒型迷宮滴頭抗堵塞試驗研究[J];農(nóng)業(yè)工程學報;2007年08期

9 辛舟;基于滴灌的黃河水泥沙分離試驗研究[J];排灌機械;2005年03期

10 湯驊;吳均;;新型矩形沉沙池在節(jié)水灌溉中的應用研究[J];人民長江;2011年03期

，

本文編號：1718509