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Real-time monitoring method for smudginess degree of finned tube heat exchanger of indirect air cooling tower

A finned tube heat exchanger and real-time monitoring technology, applied in instruments, heat exchange equipment, lighting and heating equipment, etc., can solve the problem of difficult to accurately monitor the degree of contamination, and achieve the effect of clear physical concept and guaranteed accuracy

Active Publication Date: 2021-06-04
ZHEJIANG ZHENENG TECHN RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The object of the present invention is to provide a real-time monitoring method for the dirty degree of the finned tube heat exchanger of the indirect air cooling tower, aiming at the problem that the degree of dirt caused by the above-mentioned changeable environment and climate, dirt peeling and deposition characteristics, etc. is difficult to accurately monitor. Data mining and mechanism modeling to obtain a high coefficient of determination R 2 real-time monitoring method

Method used

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  • Real-time monitoring method for smudginess degree of finned tube heat exchanger of indirect air cooling tower
  • Real-time monitoring method for smudginess degree of finned tube heat exchanger of indirect air cooling tower

Examples

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Embodiment 1

[0037] Such as figure 1 as shown, figure 1 It is a calculation flow chart of a real-time monitoring method for the degree of contamination of the finned tube heat exchanger of the indirect air cooling tower provided in the embodiment of the present invention, and is described in detail as follows:

[0038] Take a thermal power unit as the object.

[0039] In step 101, real-time operation data of the generating set is acquired.

[0040] Specifically include: unit load, circulating pump current and voltage, circulating pump inlet and outlet temperature and pressure, condenser pressure and end difference, circulating water flow, outdoor wind speed, ambient temperature, tower temperature, unit vacuum, cooling sectors and The inlet and outlet temperature and pressure of each cooling triangle.

[0041] In step 102, data is preprocessed. Clean the data and remove data with over-temperature and over-limit.

[0042] In step 103, according to the Electric Power Industry Standard of...

Embodiment 2

[0067] In order to better understand the engineering application implementation method of the present invention, combine figure 2 A schematic diagram of the system structure of a real-time monitoring method for the fouling degree of the finned tube heat exchanger of the indirect air cooling tower is further explained.

[0068] The system structure of the real-time monitoring method of the dirty degree of the finned tube heat exchanger of the indirect air cooling tower includes:

[0069] The real-time operation data acquisition module 201 is used to obtain and record the required real-time operation data of the generating set, and send the real-time operation data to the data preprocessing module. The general data comes from the SIS or DCS system of the generating set.

[0070] The data preprocessing module 202 is configured to preprocess the real-time operation data. Clean the data and remove data with over-temperature and over-limit.

[0071] In the dirty degree on-line m...

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Abstract

The invention relates to a real-time monitoring method for the smudginess degree of a finned tube heat exchanger of an indirect air cooling tower. A real-time operation data collection module, a data preprocessing module, a smudginess degree online monitoring module, a parameter storage module and an output display module are included. The operation data collection module is used for collecting and recording real-time operation data of a required unit and sending the real-time operation data to the data preprocessing module; the data preprocessing module cleans the data and eliminates overtemperature and overlimit data; and the dirt degree online monitoring module calculates the dirt coefficient Cf of the corresponding indirect air cooling tower heat exchanger tube bundle, the dirt thermal resistance Ra of the outer side of the tube, the total heat transfer coefficient K0 of the cleaning tube, the actual total heat transfer coefficient K and parameter values Ai, B0i, B1i and Ci in each calculation formula. The method has the advantages that all basic data are actually measured on site, strict formula derivation is adopted, it is guaranteed that the physical concept is clear, and the method is suitable for on-site implementation calculation.

Description

technical field [0001] The invention belongs to the technical field of power station air cooling, and in particular relates to a method for real-time monitoring of the dirtiness of finned tube heat exchangers of indirect air cooling towers. Background technique [0002] Air cooling is a common cooling method for coal-fired power plants in northern my country, using ambient air as the cooling medium. Due to the relatively dry climate in the northern region, there are many windy sands and suspended matter such as catkins, it is easy to cause material deposition on the heating surface of the finned tube heat exchanger of the indirect air cooling tower, thereby increasing the heat transfer resistance and reducing the heat transfer efficiency. [0003] Ian and others in the United States tested the performance of dust on heat exchangers in accordance with ASHRAE standards in Arizona. The results show that the heat exchange efficiency is reduced by more than 10% due to the existe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G06F16/2458G06Q50/06F28F27/00
CPCG06F17/10G06F16/2465G06Q50/06F28F27/003
Inventor 顾伟飞孙永平赵佳骏王林林宋涛董益华华敏雍天瑞王志锋赵卫正朱宝于俊杰
Owner ZHEJIANG ZHENENG TECHN RES INST