CAJ | 학술논문

为研究长距离有压管道充水过程并保证其运行中的安全,针对长距离有压管道的特点,对其充水过程,采取分段处理、依次充水的策略.对于每一段管道,闸门处采用宽顶堰型闸孔出流形式,结合空气阀的排气性质,运用气体状态方程,按小流量充水原则建立数学模型.在不同充水流量和不同空气阀间距下,计算管道内各特征点气体压强变化.计算表明充水流量越大,空气阀间距越长,特征点的气体压强越大,管道越危险.计算结果可为长距离输水管道充水过程的安全评估提供科学依据.
위연구장거리유압관도충수과정병보증기운행중적안전,침대장거리유압관도적특점,대기충수과정,채취분단처리、의차충수적책략.대우매일단관도,갑문처채용관정언형갑공출류형식,결합공기벌적배기성질,운용기체상태방정,안소류량충수원칙건립수학모형.재불동충수류량화불동공기벌간거하,계산관도내각특정점기체압강변화.계산표명충수류량월대,공기벌간거월장,특정점적기체압강월대,관도월위험.계산결과가위장거리수수관도충수과정적안전평고제공과학의거.
The authors researched the water-filling process of a pressured-pipeline in the long distance. According to the characteristics for the pressured-pipeline in the long distance during the filling process, the strategies of sectional treatment and water filling in succession are adopted. For each segment of the pipe, a mathematical model is established with adopting the sluice gate outflow type of the broad crest weir and using the Clapeyron equation according to the filling principle under the low flow rate in combination with the characteristics of exhaust gas of an air valve. On the basis of the different water filling discharges and the different air valve intervals, authors calculate the pressure changes on the feature points in the pipe. The calculated results indicate that: the greater the water filling discharge, the longer the air valve interval; the greater the feature points pressure, the higher pipe risk. This computation results can provide safety assessment foundations for the pressured-pipeline filling process in the long distance.