一种换热器运行状况在线监控方法及系统

By monitoring the changes in heat exchanger parameters in real time and combining them with online data analysis, the problem of real-time quantitative judgment of heat exchanger scaling and internal leakage has been solved. This enables quantitative assessment of scaling degree and energy consumption, reduces safety risks and energy consumption, and improves the operational safety and efficiency of the system.

CN122408531APending Publication Date: 2026-07-17XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Filing Date
2026-05-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies make it difficult to make real-time, quantitative, and comprehensive judgments on the scale thickness, heat transfer performance degradation, energy loss, and internal leakage risk of heat exchangers, making it difficult to detect early anomalies in a timely manner and provide reliable cleaning cycles and energy consumption assessments.

Method used

By collecting real-time signals of temperature, flow rate, differential pressure, and leakage medium concentration from the heat exchanger, and combining these with changes in initial thermal resistance per unit area, the equivalent thickness of scale and internal leakage status are determined. Furthermore, by adjusting the electric regulating valve and the variable frequency water pump in tandem, the dynamic hydraulic balance of the system is maintained.

Benefits of technology

It enables online quantitative monitoring of the degree of fouling in heat exchangers, quantifies the increase in energy consumption caused by fouling, promptly detects the risk of internal leakage, reduces safety hazards, optimizes pump energy consumption, and improves operational safety and energy utilization efficiency.

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Abstract

本发明属于换热设备监测与控制技术领域,公开了一种换热器运行状况在线监控方法及系统,本发明通过实时采集换热器原边和次边的温度、流量、压差以及泄漏介质浓度信号,能够改变现有技术中主要依赖人工巡检或定期清洗、难以及时掌握换热器真实运行状态的问题。其根据初始单位面积热阻与实时单位面积热阻的变化量确定结垢当量厚度,可以实现对换热器结垢程度的在线定量监测,为清洗维护时机提供判断依据,避免仅凭经验停机检修。本发明根据结垢当量厚度、实时换热量、环境绝对温度及原边、次边平均绝对温度确定结垢引起的有效能损失,使结垢造成的传热性能下降和能耗增加能够被量化评价,有利于运行人员判断结垢对系统能效的影响。
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