Air-cooled condenser dust accumulation status monitoring and cleaning control system and its control method based on convolutional neural network and image recognition

Abstract

The invention discloses an air cooling condenser ash accumulation state monitoring and cleaning control system based on a convolutional neural network and image recognition. The system is characterized by comprising a turbine and a steam exhaust allocation tube, wherein the turbine is communicated with the steam exhaust allocation tube; the steam exhaust allocation tube is communicated with a condensed water tank through a base tube of an air cooling condenser single row tube; the condensed water tank is communicated with a condensed water pump; a first visible light camera and a second visible light camera are arranged on the inner side of the base tube of the air cooling condenser single row tube and are positioned at the upper part of an air cooling fan; the first visible light camera and the second visible light camera are connected with an image acquirer; the image acquirer is connected with a monitoring host computer; the monitoring host computer is connected with a digital-modusconverter; the digital-modus is connected with a cleaning device control box; the cleaning device control box is connected with a compressed air cleaning device; the compressed air cleaning device issuspended on the lower side of a cleaning device walking truss; the cleaning device walking truss is arranged on the outer side of the base tube of the air cooling condenser single row tube and is connected with the steam exhaust allocation tube and the condensed water tank respectively. The invention further provides a scientific and reasonable regulation and control method.

Description

technical field [0001] The invention relates to the technical field of dust accumulation state monitoring and cleaning control of air-cooled condensers, in particular to an air-cooled condenser dust accumulation state monitoring and cleaning control system based on convolutional neural network and image recognition and a control method thereof. Background technique [0002] my country's Northeast, Northwest and North China ("Three Norths") regions are rich in coal resources, but lack water and water. In order to solve the contradiction in the geographical structure of the distribution of coal and water resources, air-cooled units have been developed rapidly, and now they account for the total coal-fired units. More than 20% of installed capacity. However, in the "Three North" area, there is a lot of wind and sand, and there is a lot of dust. The suspended particles carried by the cooling air and the fin channels of the air-cooled condenser are easily blocked, which greatly re...

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Problems solved by technology

However, in the "Three North" area, there is a lot of wind and sand, and there is a lot of dust. The suspended particles carried by the cooling air and the fin channels of the air-cooled condenser are easily blocked, which greatly reduces the heat transfer performance of the air-cooled condenser and increases the steam exhaust of the unit steam turbine. The pressure will not only endanger the safe operation of the air-cooling unit, but also increase the coal consumption of the air-cooling unit for power supply, and the operating economy will drop significantly

[0003] Aiming at the problem of dust accumulation in the air-cooled condenser, the current method used on site is desalinated water flushing. Although it can significantly improve the heat transfer performance of the air-cooled condenser, it also causes a series of problems: 1) The anhydrous flushing and the air of carbon steel materials The contact of the single-row tubes of the condenser can easily cause corrosion and leakage of the single-row tubes; 2) The production site relies on the operation and maintenance personnel to manually observe the dust accumulation status of the air-cooled condenser, and qualitatively analyzes the dust accumulation on the air-cooled condenser based on the experience of the operation and maintenance personnel The influence of the heat exchange process; 3) The cleaning of the dust accumulation is entirely a human decision, or based on the environmental meteorological parameters and unit operating parameters, and based on the experience of the operation and maintenance personnel to decide whether it is necessary to clean the dust accumulation of the air-cooled condenser, or to fix it every year Time cleaning, such as cleaning once a year in April and October

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