Prediction method and device for normal operation performance of air preheater of generator set
A technology of air preheater and normal operation, which is applied in the testing of machines/structural components, measuring devices, instruments, etc., which can solve the problems of inability to monitor the performance of air preheaters, and achieve the effect of facilitating on-site implementation and reducing workload
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[0003] In view of this, the embodiment of the present invention provides a method and device for predicting the normal operation performance of the air preheater of a generator set, aiming to solve the problem that the performance of the air preheater cannot be accurately and reliably monitored in the prior art
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[0022] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present invention. It will be apparent, however, to one skilled in the art that the invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
[0023] In order to illustrate the technical solutions of the present invention, specific examples are used below to illustrate.
[0024] figure 1 It is a schematic flowchart of the realization of a method for predicting the normal operation performance of the air preheater of a generator set provided by the embodiment of the present invention, and is described in detail as follows.
[0025] Step...
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The invention is suitable for the technical field of thermal equipment performance prediction, and provides a method and a device for predicting the normal operation performance of an air preheater ofa generator set, and the method comprises the steps: respectively obtaining the design condition data and operation condition data of the air preheater; calculating design performance parameters of the air preheater under the design working condition according to the design working condition data; according to the design performance parameters and the operation condition data, calculating the expected actual outlet smoke temperature of the air preheater under the operation condition; and when the actually measured outlet flue gas temperature in the operation condition data is not larger thanthe expected actual outlet flue gas temperature, determining that the normal operation performance of the air preheater is superior to the design state performance. The expected actual outlet flue gastemperature of the air preheater is calculated, a reliable basis is provided for accurately evaluating the performance of the air preheater in normal operation of a power plant unit, the workload ofa large number of on-site actual tests is reduced, and on-site implementation is facilitated.
Description
technical field [0001] The invention belongs to the technical field of thermal equipment performance prediction, and in particular relates to a method and device for predicting the normal operation performance of an air preheater of a generating set. Background technique [0002] As an important heat exchanger equipment for the boiler equipment of the generator set, the three-compartment air preheater undertakes the important function of recovering the exhaust heat of the boiler and improving the operating efficiency of the boiler. With the development of large-capacity and high-parameter power units, the performance of the three-compartment air preheater is becoming more and more important. Taking a 600MW unit as an example, every 10°C increase in the exhaust gas temperature at the outlet of the air preheater will affect the boiler efficiency by 0.5 percentage points, and directly increase the coal consumption of the power plant for power generation by about 1.5g / kW·h. At ...
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IPC IPC(8): G01M99/00
CPCG01M99/002
Inventor 杨海生贾永会张勇胜马登卿闫慧博戴喜庆