Method and system for metering coal consumption of thermal power plant

Abstract

The invention discloses a method and a system for metering coal consumption of a thermal power plant. The method comprises steps that an up and down state signal of a coal plough, a coal unloading port commutation signal of a three-way baffle plate and a coal flow weighing signal of flow coal on a conveying belt are respectively acquired; the up and down time and the coal unloading time-delay time corresponding to a target coal plough are determined; the coal unloading start time t1 and the coal unloading end time t2 of the target coal plough are determined; the coal unloading amount of the target coal plough at the coal unloading time segment t2-t1 is acquired on the basis of t1, t2 and the coal flow weighing signal acquired at a coal flow weighing signal acquisition portion on a target conveying belt; the coal unloading amount of the target coal plough is added to the total coal unloading amount of a target coal warehouse; the total coal unloading amount of the target coal warehouse is added to the total coal consumption amount of a target boiler. Through the method, the coal unloaded by the coal plough in a coal unloading state can be calculated without missing when the coal plough is in a coal unloading state, and coal consumption metering accuracy of the boiler is improved.

Description

technical field [0001] The invention relates to the technical field of coal measurement, in particular to a method and system for measuring coal consumption in a thermal power plant. Background technique [0002] Thermal power plants need to consume a large amount of coal in the process of power generation or heating. In order to grasp the economic benefits of thermal power plants, it is necessary to monitor the energy conversion efficiency of each boiler in the thermal power plant. [0003] In order to obtain the energy conversion efficiency data of each boiler in a thermal power plant, it is necessary to measure the coal consumption of each boiler. At present, when thermal power plants measure the coal consumption of boilers, they usually use public electronic belt scales to make statistics on the total coal consumption of all boilers in thermal power plants, and then share them equally to each boiler, so as to calculate the total coal consumption of each boiler. The appr...

AI Technical Summary

Problems solved by technology

At present, when thermal power plants measure the coal consumption of boilers, they usually use public electronic belt scales to make statistics on the total coal consumption of all boilers in thermal power plants, and then share them equally to each boiler, so as to calculate the total coal consumption of each boiler. The approximate coal consumption of a boiler, it can be seen that the above method of obtaining the coal consumption of the boiler is a rough way, which leads to the inability to accurately know the energy conversion efficiency of the boiler, and it is impossible to improve the working efficiency of the boiler and reduce the operating cost provide reliable evidence

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