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A method and system for monitoring the degree of dust accumulation in the fin channel of the air-cooled island radiator

A technology for radiators and air-cooled islands, applied in steam/steam condensers, lighting and heating equipment, complex mathematical operations, etc., can solve the problem of reducing the output and efficiency of steam turbines, dust accumulation in radiator fin channels, and steam exhaust from steam turbines Problems such as pressure rise, to eliminate cross wind interference, realize real-time monitoring, and improve accuracy

Active Publication Date: 2021-03-16
SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The inventors of the present disclosure found that the direct air cooling system is widely used in northern China. Due to the influence of the environment, the fin channels of the radiator are prone to dust accumulation. Under the condition of temperature and unit status, the exhaust steam pressure of the steam turbine unit will increase, and the output and efficiency of the steam turbine unit will be reduced. However, there is currently no method and equipment for online monitoring of the dust accumulation degree of the air-cooled radiator, and the monitoring of the dust accumulation of the radiator of the air-cooled system lacks direct The method of measurement, various indirect measurement methods generally lack practicality

Method used

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  • A method and system for monitoring the degree of dust accumulation in the fin channel of the air-cooled island radiator

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] After the direct air-cooled condenser has accumulated dust in the radiator channel, the existence of the thickness of the accumulated dust will cause the cross-sectional size of the air flow channel to become smaller, the heat exchange area of ​​the condenser will change at the same time, and the structure of the flow channel, air velocity and flow rate will change. When various influencing factors are the same, the outlet air velocity can reflect the difference in the flow area of ​​the flow channel. When there is no dust accumulation in the radiator channel, the outlet air velocity reaches the maximum, and as the degree of dust accumulation increases, the outlet air velocity decreases.

[0042] Such as figure 1 As shown, Embodiment 1 of the present disclosure provides a method for monitoring the degree of ash accumulation in the radiator fin channel of an air-cooled island. The ash accumulation coefficient is calculated in real time through the radiator outlet wind sp...

Embodiment 2

[0052] Embodiment 2 of the present disclosure provides a monitoring system for the degree of dust accumulation in the radiator fin channel of the air-cooled island, including:

[0053] The ideal wind speed calculation module is configured to: calculate the ideal wind speed value under different working conditions when the radiator has no dust accumulation according to the actual unit load, the actual ambient temperature and the actual fan speed;

[0054] The ash deposition coefficient calculation module is configured to: obtain the current wind speed in the vertical direction between the outer wall of the radiator tube bundle and the radiator, and obtain the ash deposition coefficient of the radiator fin channel of the air-cooled island according to the current wind speed and the ideal wind speed of the radiator, and use it to judge the ash deposition degree.

[0055] The current wind speed in the vertical direction between the outer wall of the radiator tube bundle and the ra...

Embodiment 3

[0067] Embodiment 3 of the present disclosure provides a medium on which a program is stored, and when the program is executed by a processor, the steps in the method for monitoring the degree of dust accumulation in the fin channel of the air-cooled island radiator as described in Embodiment 1 are implemented.

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Abstract

The disclosure provides a monitoring method and system for the ash deposition degree of a radiator fin passage of an air-cooling island. According to an actual unit load, actual environment temperature and an actual fan speed, ideal air speed values under different working conditions when a radiator has no ash deposition are calculated; a current air speed in a direction that the outer wall of a radiator tube bundle is perpendicular to the radiator is acquired, and according to the current air speed and the ideal air speed of the radiator, an ash deposition coefficient of the radiator fin passage of the air-cooling island is obtained, and the ash deposition coefficient is used for judging the ash deposition degree. According to the method and the system, the air speed is employed to serveas a main analysis parameter of the ash deposition degree, so that real-time monitoring of ash deposition of the radiator can be realized, which is beneficial to analyzing the operation status of an air cooling system; and the method and system are more instructive to unit operation.

Description

technical field [0001] The present disclosure relates to the technical field of radiator performance monitoring, in particular to a method and system for monitoring the degree of dust accumulation in radiator fin channels of an air-cooled island. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] The steam turbine unit is an important equipment of the thermal power generation system, and its output and efficiency determine the power generation capacity of the power generation system. Exhaust steam pressure is an important parameter affecting the efficiency and output of steam turbines. Minor changes will affect the output and efficiency of steam turbines. The reduction of exhaust pressure will cause greater enthalpy drop of steam in steam turbines and provide greater working capacity. . [0004] The condenser is a cooling device for the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28B11/00G06F17/10
CPCF28B11/00G06F17/10
Inventor 梁涛刘晓玲张力薛广伟王斐邵旻卢伟王智丁利陈志强刘庆安庆敏张冰
Owner SHANDONG ELECTRIC POWER ENG CONSULTING INST CORP
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