Heat-exchange and resistance characteristic simulation testing device used for exhaust smoke waste heat utilizing system
A resistance characteristic, testing device technology, applied in measurement devices, machine/structural component testing, fluid dynamics testing, etc., can solve measurement installation limitations, aging damage to measurement devices, and failure to intuitively measure heat exchange between two heat exchangers , resistance characteristic test bench and other problems, to simplify the system and ensure the accuracy of measurement
Active Publication Date: 2015-06-24
SHANDONG UNIV
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Problems solved by technology
[0004] At present, although the theoretical research on "Using exhaust waste heat to heat the inlet cold air of the air preheater to introduce the boiler energy-saving system" has been sufficient, the actual engineering experience is still insufficient, especially the site environment of the power plant is complex, and many locations are not suitable for installation and testing. The measurement installation is limited; some measuring devices are aging and damaged, resulting in inaccurate measurement results; there is no test bench for visually measuring the heat transfer and resistance characteristics of the two heat exchangers
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[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0030] Such as figure 1 As shown, the devices in this test platform include centrifugal fan B, air duct adjustment gate, flue gas heat exchanger simulation test section D, air preheating test section F, electric heating constant temperature water bath J that can set temperature and record heating time, The constant temperature water bath is equipped with a circulating pump and a data collector N; the measuring device includes a pitot tube, an electronic micromanometer, a temperature sensor at the air duct measuring point, a temperature sensor for measuring circulating water, and a rotameter.
[0031] This platform can measure the heat transfer and resistance characteristics of the heat exchange tube bundle in the simulation test section of the flue gas heat exchanger and the heat exchange tube bundle in the air preheating test section. The total inlet ...
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The invention discloses a heat-exchange and resistance characteristic simulation testing device used for an exhaust smoke waste heat utilizing system. The heat-exchange and resistance characteristic simulation testing device comprises a centrifugal fan, a test section, a simulation part and a measuring device, wherein the test section comprises a smoke heat exchanger simulation testing section and an air preheating testing section, the centrifugal fan is arranged at an air inlet, an air outlet of the centrifugal fan is divided into two branches via a pipeline, one is provided with the smoke heat exchanger simulation testing section, and the other one is provided with the air preheating testing section. The simulation part is arranged outside the pipeline and comprises an expansion water tank and a thermostatic water bath, a water inlet pipe and a water outlet pipe of the thermostatic water bath are connected with water inlet pipes and water outlet pipes of tube bundles of the smoke heat exchanger simulation testing section and the air preheating testing section to form a closed water circulating loop, and the thermostatic water bath is provided with a thermostatic water tank circulating pump.
Description
technical field [0001] The invention relates to a test device for heat exchange and resistance characteristic simulation of a smoke exhaust waste heat utilization system. Background technique [0002] In recent years, my country's power installed capacity has grown rapidly. By the end of 2013, the country's total installed power capacity had reached 1.247 billion kilowatts, of which thermal power accounted for 69% of the country's total installed capacity. Therefore, the "energy saving and emission reduction" of large thermal power units has always been an important energy policy of the country, and each power plant is facing a huge potential for energy saving. Among the various losses of the boiler, the exhaust gas loss is the largest item, and reducing the exhaust gas temperature has important practical significance for energy saving and emission reduction. At present, the exhaust gas temperature of boilers is usually 120-140°C. For every 10-20°C reduction in exhaust gas t...
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Login to View More IPC IPC(8): G01M99/00G01M10/00G01N25/20
Inventor 魏伟孙奉仲史月涛马磊李岩张磊
Owner SHANDONG UNIV