冷库制冷剂管路检漏与定位实时模型研究  

Real-time Model for Leak Detection and Positioning of Liquid Pipelines in the Refrigeration System

作　　者：杜娟丽[1] 田绅 邵双全[2] 田长青[2] 

机构地区：[1]河南牧业经济学院食品工程系,郑州450011 [2]中国科学院低温工程学重点实验室(理化技术研究所),北京100190 [3]中国科学院大学,北京100049

出　　处：《制冷学报》2015年第5期43-48,共6页Journal of Refrigeration

基　　金：中国科学院低温工程学重点实验室开放基金(CRYO201412)项目资助~~

摘　　要：本文将目前国际上广泛应用于长管道输送系统中的检测管道泄漏的实时模型法应用于液态氨制冷剂管路泄漏研究。并以R22制冷剂来模拟氨系统循环管路,根据动态及泄露实验研究特性,建立检漏、定位的实时模型,并通过实验验证了该模型可以实现高效快速的检漏效果及确定漏点位置,检漏精度可达到3.0%,但定位精度及稳定性与漏点位置有关。这为冷库的安全运行提供了有效措施和理论依据。The real-time model which is widely used in the detection of long pipeline leakage is applied to detect ammonia leakage in the pipeline of refrigeration systems in cold stores. The pipeline of refrigeration system with R22 is used to simulate the ammonia system. The real-time model of leak detection and positioning is set up through the dynamic characteristics of refrigerant and testing results of leakage. The model is verified by experiments and the result shows that the accuracy of leak detection can reach 3.0%, and the positioning precision and stability is related to the position of leakage, which indicates that it can efficiently and rapidly achieve leak detection and determine position of leakage. This research provides effective methods and theoretical basis for the safe operation of refrigeration system in cold stores.

关 键 词：制冷系统 冷库 制冷剂 管路泄漏 实时模型 

分 类 号：TB657.1[一般工业技术—制冷工程] TB64