An indirect method for measuring fluid temperature in radiator tubes of direct air cooling system
A technology of a radiator tube and a measurement method, which is applied in the temperature measurement of moving fluids, the application of thermometers, thermometers, etc., can solve the problems affecting the antifreeze and air-cooling system characteristics of the air-cooling system, reducing the accuracy of temperature measurement, etc., to prevent tube bundle frostbite , small margin of error, high-efficiency plan and effect of guidance
Active Publication Date: 2020-05-19
BOWEI YUANFANG ELECTRIC BEIJING CO LTD
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Problems solved by technology
However, the temperature here is disturbed by many factors, which greatly reduces the accuracy of temperature measurement.
Then it affects the analysis of the antifreeze of the air cooling system and the characteristics of the air cooling system
Method used
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[0017] The present invention will be further described in detail in combination with experimental data and specific examples below.
[0018] This method is based on the establishment of an experimental model of a direct-air condenser capable of simulating and responding to various working conditions, by integrating the temperature parameters associated with the temperature of the fluid in the radiator tube of the direct-air condenser, and by integrating the experimental data of the associated temperature parameters. The obtained indirect measurement method consists of the following steps:
[0019] a. Obtain the associated temperature parameters, the associated temperature parameters include direct air condenser ambient air temperature t 1 , the ambient air relative humidity of the direct-air condenser φ, the temperature of the radiator tube wall of the direct-air condenser t 3 and direct air condenser ambient wind speed v;
[0020] b. Substitute the obtained associated tempe...
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The invention, which belongs to the technical field of the radiator equipment of the direct air cooling system, discloses an indirect measurement method for the fluid temperature in a radiator tube ofa direct air cooling system. The method comprises: step a, associated temperature parameters are obtained; step b, the obtained associated temperature parameters are substituted into a fitting formula: y=beta1t3+beta2+beta3(t3-t1)v(1+beta4phi) and thus a fluid temperature in a radiator tube of a direct air-cooling condenser is calculated, wherein the y expresses the water temperature in the tubeof the direct air-cooling condenser, the t1 expresses the ambient air temperature of the direct air-cooling condenser, the phi expresses the relative humidity of the ambient air of the direct air-cooling condenser, the t3 expresses the tube wall temperature of the radiator of the direct air-cooling condenser, and the v expresses the ambient wind speed of the direct air-cooling condenser. With themethod disclosed by the invention, a problem of tube bundle congelation is solved directly and effectively; the running data of the set are analyzed effectively; and according to the experience of data summarization, the economic and efficient plan and guidance are provided for the running of the set.
Description
technical field [0001] The invention relates to the technical field of radiator equipment for direct air cooling systems. Background technique [0002] As my country's demand for electricity increases significantly, many large-scale thermal power plants have been built in recent years, and units with high parameters and large capacity have been adopted. In order to cope with the severe water shortage in the north, many large units have adopted direct air cooling systems. The operation of direct air cooling systems is very different from that of wet cooling towers, and has special requirements in terms of economy and safety. , and have a great impact on the operation of the steam turbine. There are many problems in operation, such as: antifreeze of air-cooled condenser, influence of strong wind, recirculation of hot air, dust accumulation on the surface of air-cooled condenser, etc. If the large-area temperature field of the internal fluid temperature of the condenser tube ...
Claims
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IPC IPC(8): G01K13/02
CPCG01K13/02G01K13/026
Inventor 刘清斌王明俊张兵强吴东张伟
Owner BOWEI YUANFANG ELECTRIC BEIJING CO LTD