Automatic test system for cold test of boiler and test method thereof

Abstract

The present invention discloses one kind of automatic boiler cold state test system and method. Several wind speed measuring probes are fixed via fixtures in measurement positions of the burner exit to measure accurate wind pressure signals, which are averaged in multi-channel pipeline, converted into electric signal in the pressure difference converter, converted in A / D converter into digital quantity and processed in microprocessor; the processed data are sent via pressure difference radio transceiver to main controlling radio transceiver and fed to computer via the communication interface for further processing to obtain the measurement results. The present invention has the advantages of simple installation, accurate data, fast measurement, etc.

Description

technical field [0001] The invention belongs to a device and a method for a cold state test of a pulverized coal fuel boiler. Background technique [0002] The cold state test is an important test item for power plant boilers. Through it, we can learn about the adjustment characteristics of the dampers that affect the combustion of the boiler. According to the characteristic curve of the dampers, the wind speed at the outlet of the burner can be adjusted and the dynamic state of the airflow in the furnace can be measured. Therefore, a good cold test is of great help to the safe and economical operation of the boiler. [0003] The four-corner injection of the direct current burner is the most important combustion method of power plant boilers in my country. The traditional test method for cold test of this type of boiler is to carry out the test one by one at the outlet of the air duct outside the furnace and the outlet of the burner in the furnace. Wind speed measurement, th...

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Problems solved by technology

[0008] c. The test takes a long time

[0009] There are a lot of boiler burner nozzles, each nozzle needs to be manually measured at multiple points in each working condition. In order to obtain a complete damper characteristic curve, it is necessary to measure multiple working conditions, so it takes a long time. In order to ensure the quality of the test and test For personnel safety, proper rest is required during the test, which not only increases the test time, but also increases the power consumption of the fan

[0010] d. Low test accuracy

[0011] Hand-held instruments are used to measure wind speeds of tens of meters per second. The shaking of the arm is unavoidable. Naturally, the stability of the instrument and the correct angle cannot be guaranteed, and the test accuracy is greatly affected.

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