Method and device for predicting 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
Active Publication Date: 2022-07-22
STATE GRID HEBEI ELECTRIC POWER RES INST +2
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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, for the purpose of illustration rather than limitation, specific details such as specific system structures and technologies are set forth in order to provide a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present 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, the following specific embodiments are used for description.
[0024] figure 1 A schematic diagram of an implementation flow of a method for predicting the normal operation performance of an air preheater of a generator set provided in an embodiment of the present invention is described in de...
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The present invention is applicable to the technical field of thermal equipment performance prediction, and provides a method and device for predicting the normal operating performance of an air preheater of a generator set. The method includes: respectively obtaining the design working condition data and operating condition data of the air preheater. ;Based on the design working condition data, calculate the design performance parameters of the air preheater under the design working conditions; Based on the design performance parameters and operating working condition data, calculate the expected actual outlet flue gas temperature of the air preheater under operating conditions; when operating When the measured outlet flue gas temperature in the working condition data is not greater than the expected actual outlet flue gas temperature, it is determined that the normal operating performance of the air preheater is better than the design state performance. The present invention calculates the expected actual outlet flue gas temperature of the air preheater, provides a reliable basis for accurately evaluating the performance of the air preheater during normal operation of the power plant unit, reduces a large amount of actual testing workload on site, and facilitates on-site implementation.
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 operating performance of an air preheater of a generator set. Background technology [0002] As an important heat exchanger device for the boiler equipment of the generator set, the three-part air preheater assumes the important function of recovering waste heat from the boiler exhaust heat and improving the boiler operating efficiency. As electric power units develop towards large capacity and high parameters, the performance of the three-compartment air preheater becomes more and more important. Taking a certain 600MW unit as an example, every 10°C increase in 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 by about 1.5g / kW·h. At present, there are many fact...
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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
Owner STATE GRID HEBEI ELECTRIC POWER RES INST