Boiler critical flame protection maloperation prevention regulation and control system

A control system and anti-misoperation technology, applied in the direction of combustion control, combustion method, lighting and heating equipment, etc., can solve problems such as large energy and time consumption, misoperation, power plant loss, etc., to reduce consumption and improve judgment accuracy , The effect of reducing the risk of tripping

Pending Publication Date: 2021-06-15
HUANENG (GUANGDONG) ENERGY DEV CO LTD
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  • Abstract
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  • Claims
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Problems solved by technology

[0003] However, during the combustion process of the furnace system, there will be occasional burnouts. At this time, the flame signal detected by the flame detection system will be temporarily lost due to burning out of coke, and it is not the actual loss of flame signal. The misoperation caused by the flame signal causes the control system to trigger the flame and lose protection, trip the coal mill, and even cause false protection actions such as boiler fire extinguishing, which will cause great losses to the power plant. The boiler is tripped due to fire extinguishing protection. After the false trip and fire extinguishing action, the process of restarting the furnace system needs to consume a lot of energy and time, and the result is not worth the candle.
[0004] In view of this, there is an urgent need for a technical solution that can effectively avoid unnecessary losses caused by misoperation caused by short-term flame loss of signal and improve the accuracy of boiler flame detection to solve the above-mentioned misoperation problem existing in the existing flame detection and protection system

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[0024] The present invention will be further described below in conjunction with specific embodiments. The drawings are for exemplary description, which is merely a schematic diagram, rather than the experiment, and is not to be understood to be in this patent; in order to better illustrate the embodiments of the invention, there will be omitted, Enlarge or shrink does not represent the size of the actual product; some well-known structures and descriptions thereof may be understood in the drawings in the drawings.

[0025] The same or similar components in the drawings of the embodiments correspond to the same or similar components; in the description of the present invention, it is to be understood that if there is a term "upper", "lower", "left", "right" The orientation or positional relationship of the indication is based on the orientation or positional relationship shown in the drawings, is merely described in order to facilitate the description of the present invention and ...

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Abstract

The invention relates to the technical field of power plant boiler system protection, in particular to a boiler critical flame protection maloperation prevention regulation and control system. The boiler critical flame protection maloperation prevention regulation and control system is characterized that the regulation and control system detects and obtains the number of flame signals of a main coal mill; the regulation and control system obtains operation data of adjacent coal mills of the main coal mill; the regulation and control system analyzes loss data of the flame signals of the main coal mill, and combines and analyzes the operation data of the adjacent coal mills of the main coal mill; and the regulation and control system performs analysis according to the data in the S3, judges the flame combustion condition in the main coal mill, and sends out an operation execution or tripping protection instruction according to the judged combustion condition. The system has the advantages that the shielding protection is performed before the flame of the coal mill loses protection, so that the judgment accuracy of the loss condition of flame signals of the main coal mill is further improved, and the condition of protection misoperation caused by transient loss of hearth flame due to coke falling can be shielded. Therefore, the unnecessary tripping risk is reduced, and the restarting consumption is reduced.

Description

Technical field [0001] The present invention relates to the field of power plant boiler system protection technology, in particular, in particular, involving a critical flame protection against boiler. Background technique [0002] The power generation of the thermal power plant mainly converts thermal energy into electricity for thousands of households through the furnace system. At present, the furnace system needs to detect the boiler in real time during combustion, and the internal flame of the coal-coating machine is set in the boiler, the coal-coating machine, and the monitoring of the flame signal inside the furnace system is realized by detecting the point. When all flame signals of the furnace system are lost, the flame is needed to be lost, and the control system is controlled by the control combustion system to activate the trip, fire extinguishing action protection. [0003] However, when the burning process of the furnace system occurs, it occurs, at this time, the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23N5/00F23N5/24F23K1/00
CPCF23K1/00F23N5/00F23N5/242
Inventor 纪洁虹杨扬生唐一多王金润陈翠贤商萍萍
Owner HUANENG (GUANGDONG) ENERGY DEV CO LTD
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