安全阀密封性能试验测试精度研究
|
摘要
为了探究安全阀密封性能测试方法(气泡法)的测试精度,通过试验模拟安全阀泄漏情况,在微小气体体积流量0~30 cm3/min范围内分别考察了不同管子内径和水温对气泡在水中生成的影响,测算了每分钟生成的气泡数和气泡体积。并对实际待校验的安全阀进行了密封性能的验证性试验。结果表明,当其他条件固定,在微小气体体积流量下水中生成的气泡体积基本稳定不变,每分钟生成的气泡数与气体体积流量成正比。相同试验条件下,气泡数分别随着管子内径的减小、水温的增大而增大,而气泡体积随之变小。并通过试验拟合曲线,计算出相同气体体积流量下试验值与标准值的误差,从而得到测试精度范围。
In order to explore the test accuracy of the sealing performance test method of safety valve(bubble method),by simulating the leakage of the safety valve by tests,the effects of different pipe inner diameter and water temperature on the formation of bubbles in water in the range of the micro gas volume flow of 0~30 cm~3/min were investigated. The number of bubbles per minute and the volume of bubbles were calculated. Moreover,the sealing performance of the safety valve to be calibrated actually was verified. The results show that when the other conditions are fixed,the volume of the bubbles generated in water at the micro gas volume flow was basically stable,and the number of bubbles generated per minute was proportional to the gas volume flow. Under the same test conditions,the number of bubbles increases with the decrease of the inner diameter of the pipe and the increase of water temperature,while the volume of the bubbles decreases accordingly. The range of test accuracy was obtained by calculating the relative error between the test values and standard values at the same gas volume flow through the test fitting curve.
In order to explore the test accuracy of the sealing performance test method of safety valve(bubble method),by simulating the leakage of the safety valve by tests,the effects of different pipe inner diameter and water temperature on the formation of bubbles in water in the range of the micro gas volume flow of 0~30 cm~3/min were investigated. The number of bubbles per minute and the volume of bubbles were calculated. Moreover,the sealing performance of the safety valve to be calibrated actually was verified. The results show that when the other conditions are fixed,the volume of the bubbles generated in water at the micro gas volume flow was basically stable,and the number of bubbles generated per minute was proportional to the gas volume flow. Under the same test conditions,the number of bubbles increases with the decrease of the inner diameter of the pipe and the increase of water temperature,while the volume of the bubbles decreases accordingly. The range of test accuracy was obtained by calculating the relative error between the test values and standard values at the same gas volume flow through the test fitting curve.
引文
[1]ISO 4126-1.Safety devices for protection against excessive pressure-Part 1:Safety valves[S].2013.
[2]ASME PTC25.Pressure Relief Devices[S].2014.
[3]API STD527.Seat Tightness of Pressure Relief Valves[S].2014.
[4]GB/T 12243-2005.弹簧直接载荷式安全阀[S].2005.
[5]TSG ZF001-2006.安全阀安全技术监察规程[S].2006.
[6]Liow Jong-Leng.Quasi-equilibrium bubble formation during top-submerged gas injection[J].Chemical Engineering Science,2000,55(1):4515-4524.
[7]Gnyloskurenko S V,Byakova A V,Raychenko O I.Influence of wetting conditionson bubble formation at orifice in an inviscid liquid[J].Mechanism of bubble evolution,Colloids and Surfaces,2003,229(1-3):19-32.
[8]Perron A,Kiss L I,Poncs k S.An experimental investigation of the motion of single bubbles under a slightly inclined surface[J].International Journal of Multiphase Flow,2006,32(5):606-622.
[9]徐玲君,陈刚,邵建斌,等.静水中单个气泡的动力学特性数值模拟[J].长江科学院院报,2011(9):18-20.
[10]Vecer M,Lestinsky P,Wichterle K,et al.On bubble rising in countercurrent flow[J].International Journal of Chemical Reactor Engineering,2012,10(10):1515-1542.
[11]Scargiali Francesca,Busciglio Antonio,Grisafi Franco,et al.Bubble formation at variously inclined nozzles[J].Chemical Engineering&Technology,2014,37(9):1507-1514.
[12]Wenyuan Fan,Yawei Sun,Hui Chen.Bubble Volume and aspect ratio generated in non-newtonian fluids[J].Chemical Engineering and Technology.2014,37(9):1566-1574.
[13]钟良才,周航,王龙,等.加压下气泡在液体中的行为[J].东北大学学报(自然科学版),2015(3):388-391.
[14]夏舒阳,姚建,罗利佳,等.高温工况下安全阀的整定压力偏差计算方法[J].压力容器,2017,34(6):5-14.
[15]张茂力,朱海清,费宏伟.基于预估油压的安全阀在线校验技术研究[J].压力容器,2017,34(11):76-80.
[16]盛伟,WANG Qing guo,朱善安.基于Canny边缘检测和加权最小二乘法的气泡水平仪实时检测方法[J].机电工程,2016,33(10):1182-1187.
[17]叶道星,李红,赖喜德.湍流发生器中气泡水平向心运动试验[J].排灌机械工程学报,2017,35(11):947-953.
[18]丁跃文,张亚新,徐小姿.液体中气泡生成影响因素的试验研究[J].流体机械,2016,45(7):9-13.
[19]王红一,董峰.气液两相流中上升气泡体积的计算方法[J].仪器仪表学报,2009,30(11):2444-2449.
[20]吴晅,李铁,袁竹林,等.静止液体中顶部浸没管口处气泡形成的数值预测[J].东南大学学报(自然科学版),2008(1):86-91.
[2]ASME PTC25.Pressure Relief Devices[S].2014.
[3]API STD527.Seat Tightness of Pressure Relief Valves[S].2014.
[4]GB/T 12243-2005.弹簧直接载荷式安全阀[S].2005.
[5]TSG ZF001-2006.安全阀安全技术监察规程[S].2006.
[6]Liow Jong-Leng.Quasi-equilibrium bubble formation during top-submerged gas injection[J].Chemical Engineering Science,2000,55(1):4515-4524.
[7]Gnyloskurenko S V,Byakova A V,Raychenko O I.Influence of wetting conditionson bubble formation at orifice in an inviscid liquid[J].Mechanism of bubble evolution,Colloids and Surfaces,2003,229(1-3):19-32.
[8]Perron A,Kiss L I,Poncs k S.An experimental investigation of the motion of single bubbles under a slightly inclined surface[J].International Journal of Multiphase Flow,2006,32(5):606-622.
[9]徐玲君,陈刚,邵建斌,等.静水中单个气泡的动力学特性数值模拟[J].长江科学院院报,2011(9):18-20.
[10]Vecer M,Lestinsky P,Wichterle K,et al.On bubble rising in countercurrent flow[J].International Journal of Chemical Reactor Engineering,2012,10(10):1515-1542.
[11]Scargiali Francesca,Busciglio Antonio,Grisafi Franco,et al.Bubble formation at variously inclined nozzles[J].Chemical Engineering&Technology,2014,37(9):1507-1514.
[12]Wenyuan Fan,Yawei Sun,Hui Chen.Bubble Volume and aspect ratio generated in non-newtonian fluids[J].Chemical Engineering and Technology.2014,37(9):1566-1574.
[13]钟良才,周航,王龙,等.加压下气泡在液体中的行为[J].东北大学学报(自然科学版),2015(3):388-391.
[14]夏舒阳,姚建,罗利佳,等.高温工况下安全阀的整定压力偏差计算方法[J].压力容器,2017,34(6):5-14.
[15]张茂力,朱海清,费宏伟.基于预估油压的安全阀在线校验技术研究[J].压力容器,2017,34(11):76-80.
[16]盛伟,WANG Qing guo,朱善安.基于Canny边缘检测和加权最小二乘法的气泡水平仪实时检测方法[J].机电工程,2016,33(10):1182-1187.
[17]叶道星,李红,赖喜德.湍流发生器中气泡水平向心运动试验[J].排灌机械工程学报,2017,35(11):947-953.
[18]丁跃文,张亚新,徐小姿.液体中气泡生成影响因素的试验研究[J].流体机械,2016,45(7):9-13.
[19]王红一,董峰.气液两相流中上升气泡体积的计算方法[J].仪器仪表学报,2009,30(11):2444-2449.
[20]吴晅,李铁,袁竹林,等.静止液体中顶部浸没管口处气泡形成的数值预测[J].东南大学学报(自然科学版),2008(1):86-91.