【摘要】：本文研究的是普通雙立管系統(tǒng),實(shí)驗(yàn)測(cè)試采用鑄鐵管材及配件,通過(guò)變換H管位置、改變不同的排水三通及底部彎頭進(jìn)行試驗(yàn),并通過(guò)試驗(yàn)結(jié)果進(jìn)行分析比較后,得出不同組合時(shí)各自的排水能力并總結(jié)出不同通氣管連接位置和排水三通及底部彎頭對(duì)普通雙立管系統(tǒng)排水能力的影響。本試驗(yàn)用60米排水試驗(yàn)裝置作為研究對(duì)象,采用定常流法從最高層橫支管開(kāi)始施加流量,以0.5L/s為梯度增加,每層的最大放水流量為2.5L/s。通水能力為施加的累計(jì)流量值,本次試驗(yàn)通過(guò)設(shè)定每層放水流量來(lái)自動(dòng)控制相應(yīng)樓層進(jìn)水,本文主要進(jìn)行了以下幾個(gè)方面的試驗(yàn)研究:1.每層通氣管都緊挨三通上部連接時(shí),分別測(cè)試裝有90度彎頭加100×150變徑和90度大曲率變徑兩種彎頭的T三通及旋流三通的普通鑄鐵雙立管系統(tǒng)的最大通水能力。并對(duì)測(cè)試結(jié)果進(jìn)行對(duì)比分析,測(cè)試結(jié)果表明,T三通與90度彎頭加100×150變徑接頭的組合最大通水流量為7L/s,其他組合最大通水流量均為7.5L/s。2.每層通氣管都與排水管在相鄰三通中部連接時(shí),分別測(cè)試裝有90度彎頭加100×150變徑接頭和90度大曲率變徑兩種彎頭的T三通及旋流三通的普通鑄鐵雙立管系統(tǒng)的最大通水能力,并對(duì)測(cè)試結(jié)果進(jìn)行對(duì)比分析,測(cè)試結(jié)果表明,T三通與90度彎頭加100×150變徑接頭的組合最大通水流量為7L/s,旋流三通加大曲率變徑彎頭的組合最大通水流量為6.5L/s,其他組合最大通水流量均為7.5L/s。3.每層通氣管都緊挨三通下部連接時(shí),分別測(cè)試裝有90度彎頭加100×150變徑接頭和90度大曲率變徑兩種彎頭的T三通及旋流三通普通鑄鐵雙立管系統(tǒng)的最大通水能力。并對(duì)測(cè)試結(jié)果進(jìn)行對(duì)比分析,測(cè)試結(jié)果表明,通氣管緊挨三通下部連接時(shí)效果顯著,其中旋流三通與大曲率底部彎頭組合的最大通水能力為11L/s,旋流三通與90度彎頭加100×150變徑組合最大通水能力為10L/s,當(dāng)三通變換為T(mén)三通時(shí),與大曲率變徑彎頭組合的最大通水流量為9L/s,與90度彎頭加100×150變徑接頭組合對(duì)應(yīng)最大通水流量分別為8.5L/s。
[Abstract]:In this paper, the common double riser system is studied. Cast iron pipe and fittings are used in the experiment test. By changing the position of H pipe, different drains and bottom elbows are changed, and the test results are analyzed and compared. The drainage capacity of different combinations is obtained, and the influence of different connection position of ventilation pipe, drainage trunnion and bottom elbow on drainage capacity of common double riser system is summarized. In this experiment, 60 meters drainage test equipment was used as the research object. The flow rate was applied from the top horizontal branch pipe by the steady flow method, and the maximum discharge rate of each layer was 2.5 L / s, with 0.5L/s as the gradient. The capacity of water flow is the value of accumulative flow applied. This experiment automatically controls the influent of the corresponding floor by setting the discharge rate of each layer. This paper mainly carried out the following aspects of the experimental research: 1. When each layer of ventilation pipe is connected closely to the upper part of the three-way, the maximum water capacity of the T-trundle and the ordinary cast iron double-way riser system with 90 degree elbow plus 100 脳 150 diameter and 90 degree big curvature variable diameter respectively is tested. The test results show that the combined maximum water flux is 7L / s and the maximum water flux of other combinations is 7.5L / s 路s ~ (2) for T trunking and 90 degree bend plus 100 脳 150 diameters. When each layer of ventilation pipe is connected with the drain pipe in the middle of the adjacent three way, the maximum water capacity of the ordinary cast iron double riser system with 90 degree bends and 100 脳 150 diameters and 90 degree large curvature diameters is tested, respectively. The test results show that the combined maximum water flux of T tee and 90 degree bend plus 100 脳 150 diameters is 7L / s, and the combined maximum water flux of swirl tri-way and curvature variable-diameter bend is 6.5 L / s. The maximum water flux of the other combinations was 7.5 L / s. 3. When each layer of ventilation pipe is connected closely to the lower part of the three-way, the maximum water capacity of the T-trundle and swirling three-way common cast iron double riser system with 90 degree elbow and 100 脳 150 diameter joint and 90 degree big curvature variable diameter joint are tested respectively. The test results show that the effect of the ventilation tube is remarkable when it is connected closely to the lower part of the three-way, in which the maximum water transfer capacity of the combination of the swirl three-way and the bottom bend with large curvature is 11L / s. The maximum water flow capacity is 10L / s for the combination of swirl three-way and 90-degree bend plus 100 脳 150 variable diameter, and 9L / s for the combination with large curvature bend when the three-way is converted to T three-way. The maximum water flux corresponding to the combination of 90 degree bend and 100 脳 150 variable diameter joint is 8.5 L / s.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TU823

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