集中供冷供热系统冷热量表现场校准方法  

Heat Meter on-site Calibration Method in Centralized Cooling and Heating Systems

作　　者：罗林聪 丁跃清 朱君 郑伟 王晶 覃勤 LUO Lincong;DING Yueqing;ZHU Jun;ZHENG Wei;WANG Jing;QIN Qin

机构地区：[1]重庆市计量质量检测研究院 [2]国家城市能源计量中心(重庆) [3]重庆市江北嘴水源空调有限公司

出　　处：《计量与测试技术》2023年第11期1-4,共4页Metrology & Measurement Technique

基　　金：重庆市市场监督管理局科研计划项目(项目名称:区域集中供冷供热末端计量仪表现场检测优化及状态评估研究,项目编号:CQSJKJ2021021)。

摘　　要：集中供冷供热系统冷热量表长期使用后,存在计量特性降低、拆卸送检等情况。本文通过对冷热量表检测现状和问题分析,探讨了一种适合该系统在用冷热量表现场在线校准方法,使用超声波流量计、高精度温度传感器及恒温槽构成现场校准装置,并采用分量法和总量法相结合的校准模式。结果表明:该方法具有可操作性和实践意义,有利于提高集中供冷供热系统计量准确性和能源资源利用率,且节约成本。After long-term use of the cold and heat meter in the central cooling and heating system,the metering characteristics are reduced and it is difficult to disassemble and send for inspection.Based on the analysis of the current situation and problems of cold and heat meter detection,this paper discusses a method for on-site on-line calibration of heat and cold meter,which uses ultrasonic flowmeter,high precision temperature sensor and constant temperature tank to form an on-site calibration device,and adopts the combination of component method and total quantity method.The results show that the method has operability and practical significance,which is conducive to improving the measurement accuracy and energy resource utilization rate of central cooling and heating system,and saving cost.

关 键 词：集中供冷供热 冷热量表 现场校准 计量误差 

分 类 号：TH81[机械工程—仪器科学与技术]