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Microwave carbon-detection sensor uninfluenced by change of coal type

A sensor and microwave technology, applied in the field of microwave carbon measurement sensors, can solve problems such as the measurement range of ash blocking

Inactive Publication Date: 2008-07-30
郑忠信
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] The purpose of the present invention is to solve the problems in the prior art, first to solve the serious impact of the change of coal type on the microwave sensor, to provide a microwave carbon sensor that is not affected by the change of coal type, and at the same time, to establish a simple measurement mode, which makes the sensor simple in structure and simple in calculation, and overcomes the shortcomings of existing technologies such as dust blocking, poor real-time performance and limited measurement range

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  • Microwave carbon-detection sensor uninfluenced by change of coal type
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  • Microwave carbon-detection sensor uninfluenced by change of coal type

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Embodiment Construction

[0033] The structure and working principle of the present invention will be described in detail below according to the embodiments.

[0034] Referring to Figures 1, 2, and 7, part number 1 is the rectangular resonant cavity mentioned above, which can be composed of a section of rectangular waveguide with both ends closed, and a gray The sample tube 2, the gray sample tube is fixed on the resonant cavity 1 through the metal sleeves 3 and 4 on the upper and lower ends of the tube, wherein the metal sleeves 3 and 4 are also equivalent to the cut-off circular waveguide, which can prevent the microwave in the resonant cavity Leak along the upward and downward directions of the gray sample tube. The gray sample tube is generally a transparent quartz glass tube, and it is best to intersperse in the center of the E plane, that is, the position with the strongest standing wave field. On the E face of this rectangular resonant cavity, a described coaxial cable seat 5 is also housed, and...

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Abstract

This invention is a microwave carbon detecting sensor free of the influence of carbon kinds, which is located with a rectangle or column micro resonant chamber with an ash sample pipe vertical through the resonant chamber and with a co-axis cable socket in the resonant chamber inside end of which has a probe activator or couple ring activator the outside end is connected with a circulator. The first end of the circulator is connected with microwave signal generator and the second end of the circulator is connected with out end of the cable socket and the third end of the circulator is connected with the microwave cymoscope. It deduces measurement frequency and greatly deduces the power of absorbing the inorganic matter powder by the fly ash and eliminates the coal kinds influence. The resonant chamber is filled with low wear dielectric and can further reduce the size of resonant chamber.

Description

technical field [0001] The invention relates to a microwave measuring sensor for measuring carbon content in fly ash of a large industrial boiler by using microwaves, in particular, it is a microwave carbon measuring sensor which is not affected by changes in coal types. Background technique [0002] In the prior art, US Patents US5109201 and US5173662 provide a microwave carbon sensor, which determines the carbon content of fly ash by measuring the microwave power absorbed by carbon particles in fly ash. Referring to Fig. 3 in US5173662, it mainly consists of a waveguide 128, the first and second waveguide coaxial converters 130, 132 arranged at the two ends of the waveguide, the gray sample tube 110 arranged in the middle of the measuring waveguide, the microwave generator 206, Circulator 210, directional coupler 214, multi-channel coaxial gating switch 226, gating logic controller 228, power meter 222 and other components. The microwave output by the microwave generator ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N22/00
Inventor 郑忠信
Owner 郑忠信
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