本文選題：水錘 + 數(shù)解綜合法　； 參考：《浙江大學(xué)》2015年碩士論文

【摘要】：當(dāng)滿足適當(dāng)條件下的穩(wěn)態(tài)流體受到水錘誘因,將會(huì)觸發(fā)一種瞬態(tài)流動(dòng)現(xiàn)象-----水錘。此時(shí)流體運(yùn)動(dòng)中所有的空間點(diǎn)處的一切運(yùn)動(dòng)要素不僅隨空間位置而變,而且隨時(shí)間劇烈變化。長(zhǎng)久以來使水利水電、石油化工、核電等行業(yè)飽受水錘的困擾并蒙受巨大的經(jīng)濟(jì)損失和人員傷亡事故教訓(xùn),因此需要找到對(duì)非穩(wěn)態(tài)流體的物理性質(zhì)和微觀機(jī)理研究的方法并應(yīng)用在工程實(shí)踐中,以制定有針對(duì)性的水錘防患措施。本文以連接某地下水封洞庫(kù)的各段原油長(zhǎng)輸管線為研究對(duì)象,結(jié)合數(shù)解綜合法公式估算的快捷性和AFT impulse軟件計(jì)算的精確性。首先用經(jīng)驗(yàn)數(shù)據(jù)代入公式快速估算出水錘的最大壓升,并利用工程經(jīng)驗(yàn)快速辨識(shí)和篩選可能發(fā)生較嚴(yán)重水錘事故的管線,然后利用水錘軟件進(jìn)行精確模擬和計(jì)算。經(jīng)對(duì)比,估算值與軟件計(jì)算值基本吻合。所總結(jié)的一套非穩(wěn)態(tài)流體模擬和計(jì)算的綜合方法已成功在工程實(shí)際中得以應(yīng)用。根據(jù)計(jì)算所設(shè)置的水擊泄壓閥可以在不提高管道設(shè)計(jì)壓力的情況下,對(duì)管道系統(tǒng)進(jìn)行泄壓保護(hù),其與SCADA系統(tǒng)組成了長(zhǎng)輸管線主要的水錘防患措施。
[Abstract]:When the steady state fluid is induced by water hammer under suitable conditions, it will trigger a transient flow phenomenon-water hammer. At this time, all the moving elements at all the spatial points in the fluid motion change not only with the space position, but also with the time. For a long time, water conservancy, hydropower, petrochemical, nuclear power and other industries have been plagued by water hammer and suffered huge economic losses and casualties. Therefore, it is necessary to find a method to study the physical properties and microscopic mechanism of unsteady fluid and to apply it to engineering practice in order to formulate targeted water hammer prevention measures. In this paper, the long distance crude oil pipeline connecting a underground water seal reservoir is taken as the research object, the rapidity of the estimation by the method of numerical solution synthesis and the accuracy of the calculation by AFT impulse software are studied in this paper. Firstly, the maximum pressure rise of water hammer is estimated quickly by inserting empirical data into the formula, and the pipeline that may occur serious water hammer accident is quickly identified and screened by engineering experience, and then the accurate simulation and calculation are carried out by using water hammer software. By comparison, the estimated value is basically consistent with the calculated value of the software. A set of synthetic methods for simulation and calculation of unsteady fluid have been successfully applied in engineering practice. According to the calculation, the pressure relief valve of water hammer can be used to protect the pipeline system without increasing the design pressure of the pipeline. It and SCADA system constitute the main water hammer prevention measures for the long distance pipeline.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TQ022.1

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