介绍了一起110 k V气体绝缘封闭开关设备(GIS)母线接地排和气体管路温升异常的分析处理过程。分析了红外测温、螺栓力矩检测、电流检测等结果,认为接地排面积不足和气管未绝缘隔断是导致温升异常的主要原因。给出了增加相间接地排及气...介绍了一起110 k V气体绝缘封闭开关设备(GIS)母线接地排和气体管路温升异常的分析处理过程。分析了红外测温、螺栓力矩检测、电流检测等结果,认为接地排面积不足和气管未绝缘隔断是导致温升异常的主要原因。给出了增加相间接地排及气管增加绝缘垫等整改措施,测试结果表明,整改后接地排和气管温升满足标准和使用要求。展开更多
This article presents the results of experimental investigation of heat transfer process, carded out using the model of heat exchanger. Two-phase statically stable foam flow was used as a heat transfer fluid. Heat exc...This article presents the results of experimental investigation of heat transfer process, carded out using the model of heat exchanger. Two-phase statically stable foam flow was used as a heat transfer fluid. Heat exchanger model consisted of staggered tube bank. Experimental results are presented with the focus on influence of tube position in the line of the bank, volumetric void component and velocity of gas component of the foam. The phenomena of liquid draining in cellular foam flow and its influence on heat transfer rate has also been discussed. The experi- mental results have been generalized by relationship between Nusselt, Reynolds and Prandtl numbers.展开更多
文摘介绍了一起110 k V气体绝缘封闭开关设备(GIS)母线接地排和气体管路温升异常的分析处理过程。分析了红外测温、螺栓力矩检测、电流检测等结果,认为接地排面积不足和气管未绝缘隔断是导致温升异常的主要原因。给出了增加相间接地排及气管增加绝缘垫等整改措施,测试结果表明,整改后接地排和气管温升满足标准和使用要求。
文摘This article presents the results of experimental investigation of heat transfer process, carded out using the model of heat exchanger. Two-phase statically stable foam flow was used as a heat transfer fluid. Heat exchanger model consisted of staggered tube bank. Experimental results are presented with the focus on influence of tube position in the line of the bank, volumetric void component and velocity of gas component of the foam. The phenomena of liquid draining in cellular foam flow and its influence on heat transfer rate has also been discussed. The experi- mental results have been generalized by relationship between Nusselt, Reynolds and Prandtl numbers.
