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Leakage judging method for boiler economizer in power plant

A technology for power station boilers and economizers, applied in feed water heaters, control systems, preheating, etc., can solve problems such as economizer leakage, and achieve the effect of avoiding accidents and ensuring stability

Inactive Publication Date: 2012-10-17
PANGANG GRP PANZHIHUA STEEL & VANADIUM
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to propose a method for judging the leakage of the economizer of the power station boiler in view of the fact that there is no effective technical means to judge the leakage of the economizer at the initial stage of the leakage of the economizer

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Embodiment Construction

[0018] Describe technical scheme of the present invention in detail below:

[0019] The technical scheme of the method for judging the leakage of a power plant boiler economizer according to the present invention is as follows: first, the data information of the feedwater flow and steam flow of the economizer is collected in real time through the acquisition unit, where the flow can be carried out through the DCS system commonly used in existing power plants Collecting traffic can also be collected through other dedicated equipment. Then the collected feed water flow and steam flow data information is transmitted to the data processing unit, which is converted into feed water flow and steam flow per second by the data processing unit, because the collected flow data may not be flow data per second, so it is necessary to The data processing unit performs processing to ensure that the current feedwater flow per second corresponds to the current steam flow per second at the curre...

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Abstract

The invention relates to a leakage judging method for a boiler economizer in a power plant. The method mainly comprises the following steps of: converting acquired data on water supply flow and steam flow of the economizer into flow data per second; and subsequently enlarging micro-leakage quantity by accumulating the data per second so as to detect the leakage at the early stage of the economizer accurately. The leakage judging method has the beneficial effects that the leakage condition of the economizer can be judged accurately, the leakage of the economizer can be judged ahead of time for more than at least 12 hours, and the power plant can take measures in time when the leakage occurs in the economizer, thereby ensuring the stability of production and avoiding accidents. The leakage judging method is particularly applicable to the boiler economizer of the power plant.

Description

technical field [0001] The invention relates to a method for judging leakage of a boiler economizer of a power station. Background technique [0002] Due to the nature of coal-fired power plants burning coal and using its heat to generate electricity, boiler heating surface leakage and shutdown account for more than 70% of boiler accidents in power plants. Therefore, early judgment of heating surface leakage and timely treatment are crucial to preventing the expansion of heating surface leakage. Or reduce the accident loss has great practical significance. When the power plant boiler economizer leaks a lot, the feedwater flow into the boiler will be significantly greater than the steam flow out of the boiler, and the temperature of the flue gas near and behind the leak point will drop significantly. When the leakage is particularly serious, a large amount of gray water will flow out of the flue At this time, it is easier to find the leakage of the economizer, but the leakag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F22B35/00F22D1/00
Inventor 熊小刚廖后华耿彩华韦美兵
Owner PANGANG GRP PANZHIHUA STEEL & VANADIUM
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