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Oxygen content measurement device and oxygen content measurement method for zirconium oxide

A measuring device and zirconia detector technology, applied in the direction of measuring devices, material analysis through electromagnetic means, instruments, etc., can solve the problem of inaccurate oxygen concentration in the measured gas, improve the measurement accuracy and service life, and save equipment The effect of cost, strong utility value and practical significance

Inactive Publication Date: 2014-05-21
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

[0004] The present invention provides a zirconia oxygen measuring device and method to solve the problem that the object characteristics of the electric heating furnace of the traditional zirconia oxygen meter will affect the control effect of the PID temperature control algorithm due to the change of environmental factors and cause the meter to measure the measured gas oxygen. Concentration inaccurate problem

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  • Oxygen content measurement device and oxygen content measurement method for zirconium oxide

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] Such as figure 1 As shown, the zirconia oxygen measuring device includes: a temperature sensor 1 in the zirconia detector, a computer 2, a temperature control circuit 3 and a zirconia detector 4, and the computer 2 is equipped with a fuzzy control program module, so The zirconia detector 4 described above includes a heating element 401 and a zirconia tube 402 .

[0021] The temperature sensor 1 in the zirconia detector 4 is used to detect the temperature at the process gas at the sampling point in the zirconia zirconia tube in the zirconia detector 4 in real time, and calculate the temperature change value according to the preset working temperature, and put the zirconia zirconia tube The temperature and temperature change value of the process gas at the sampling point in 402 are provided to the fuzzy control program module installed in the co...

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Abstract

The invention discloses an oxygen content measurement device and an oxygen content measurement method for zirconium oxide. The oxygen content measurement device for zirconium oxide comprises a temperature measurement sensor, a computer, a temperature control circuit and an zirconium oxide detector which are connected with one another in sequence, wherein the temperature measurement sensor is arranged in the zirconium oxide detector. According to the oxygen content measurement method for the zirconium oxide, the zirconium oxide detector works within a stable working temperature range by a fuzzy control method and then outputs oxygen potential and a temperature value of gas to be detected; the oxygen concentration of the gas to be detected by the zirconium oxide detector is calculated through a transformation formula of a nernst formula. The oxygen content measurement device and the oxygen content measurement method have the beneficial effects that the fuzzy control method replaces the conventional PID (proportion, integration and differentiation) temperature control method, so that the problem that the oxygen concentration of the detected gas, which is measured by an instrument, is inaccurate due to the influence on a control result of a PID temperature control algorithm, caused by the change of an environment factor of an object characteristic of an electric heating furnace of the conventional oxygen concentration instrument for the zirconium oxide, is solved; the measurement precision of the zirconium oxide instrument is improved, and the service life of the zirconium oxide instrument is prolonged.

Description

technical field [0001] The invention relates to a zirconia oxygen measuring device and method, belonging to the technical field of automatic control. technical background [0002] The oxygen content of flue gas is one of the important indicators to measure the production efficiency of thermal power generation enterprises. Excessive oxygen content in the flue gas indicates that too much air enters the furnace, and the excess air takes away a lot of heat, which increases the exhaust loss and reduces the efficiency of the boiler; while the low oxygen content in the flue gas indicates that the air entering the furnace is insufficient, and the fuel cannot Full combustion, in severe cases, may even cause the danger of boiler fire. Therefore, it is of great practical significance to accurately measure the oxygen content of flue gas. [0003] The traditional method and the traditional zirconia oxygen meter measure oxygen based on the principle of the concentration cell. Even if th...

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Application Information

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IPC IPC(8): G01N27/409
Inventor 董泽于金生延寒
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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