CN2465180Y - Online microwave sensor for carbon content in fly ash of flue duct - Google Patents
Online microwave sensor for carbon content in fly ash of flue duct Download PDFInfo
- Publication number
- CN2465180Y CN2465180Y CN 01210622 CN01210622U CN2465180Y CN 2465180 Y CN2465180 Y CN 2465180Y CN 01210622 CN01210622 CN 01210622 CN 01210622 U CN01210622 U CN 01210622U CN 2465180 Y CN2465180 Y CN 2465180Y
- Authority
- CN
- China
- Prior art keywords
- flue
- fly ash
- edge
- loudspeaker
- carbon content
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to an on-line microwave sensor for carbon content in the fly ash of a flue, which belongs to the technical field of a microwave and a sensor. The utility model is characterized in that bell mouths of an emission bell 3 and an acceptance bell 10 are respectively provided with an edge 4 and an edge 9, which are used for fixing; in virtue of the edge 4 and the edge 9, the emission bell 3 and the acceptance bell 10 are respectively fixed to the outer walls of opposite flue wall 70 and flue wall 71 of the flue through a dielectric plate 50 and a dielectric plate 51 and are used with a microwave receiving and transmitting system, and the flue wall 70 and the flue wall 71 are provided with an emission hole 60 and an acceptance hole 61. The utility model can measure the carbon content in the fly ash of a flue in real time and needs not collect fly ash samples of a flue, and can not block ash. The utility model is especially suitable for installing on a flue of a boiler of a fuel electric plant and realizes real-time monitoring to the boiler combustion condition and further can be artificially or automatically controlled. The boiler efficiency is increased, and the generating cost is reduced.
Description
The utility model relates to a kind of online microwave remote sensor of fume duct fly ash carbon content, belongs to microwave and sensor technical field.
Fume duct fly ash carbon content is an important indicator of heat power plant boiler.Utilize this index can in time align the boiler combustion operating mode, improve boiler efficiency.A technology of utilizing microwave remote sensor to measure fume duct fly ash carbon content is fast arranged in the background technology, now be summarized as follows, a kind of microwave remote sensor of fume duct fly ash carbon content, by a pair of pyramid loudspeaker staggered relatively---emission loudspeaker 3 and accept loudspeaker 10 and form.This sensor must with the coupling of microwave transmitting and receiving measuring system: the emission loudspeaker 3 be connected with microwave source 1 through isolator 2; Accepting loudspeaker 10 is connected with display 13 with data processing through wave detector 11, amplifier 12; The sample hose 14 that fills fume duct fly ash sample 81 is placed between emission loudspeaker 3 and the reception loudspeaker 10.See accompanying drawing 1.The microwave signal that microwave source 1 produces reaches emission loudspeaker 3 through isolator 2, emission loudspeaker 3 convert microwave signal to electromagnetic wave, propagate towards the direction that receives loudspeaker 10, the fume duct fly ash sample 81 in the way in being contained in sample hose 14 absorbs its portion of energy, arrives at and accepts loudspeaker 10.Accept loudspeaker 10 electromagnetic waves that receive are converted to microwave signal, the carbon content in its strong and weak and fume duct fly ash sample 81 how much relevant, carbon content is many more, and it is many more to absorb electromagnetic energy, and the microwave signal that receives is weak more, and vice versa.Wave detector 11 converts this microwave signal to direct current signal, after amplifier 12 amplifies, reaches data processing and display 13.The data processing section of data processing and display 13 converts this direct current signal to represent with numeral or analog form carbon content, and is shown with numeral or analog form by the display part of data processing and display 13.It has solved with the microwave remote sensor of microwave transmitting and receiving measuring system coupling can measure carbon content in the fume duct fly ash sample 81 fast.But its shortcoming is to gather the measuring flying dust sample of the confession of capacity 81 about 1-2 hours consuming time from flue, causes the carbon content that records can not be used for characterizing the real-time combustion conditions of boiler; In addition, as sample hose 14 stifled ashes, so conventional carbon content is measured and can not be carried out.
The purpose of this utility model is at above-mentioned defective, provide a kind of can be directly to the flying dust sample that flows in the boiler flue that measure in real time with the microwave remote sensor coupling of microwave transmitting and receiving measuring system.
The utility model is realized by following technical proposal.A kind of online microwave remote sensor of fume duct fly ash carbon content, by a pair of pyramid loudspeaker staggered relatively---emission loudspeaker 3 and accept loudspeaker 10 and form, it is characterized in that, emission loudspeaker 3 are shaped on respectively for the edge 4 and the edge 9 that install and fix usefulness with the hydraucone of accepting loudspeaker 10, by edge 4 and edge 9, emission loudspeaker 3 with accept loudspeaker 10 respectively through dielectric-slab 50 and dielectric-slab 51 be fixed in flue relative, have the walling of flue 70 of transmitting aperture 60 and receiving orifice 61 and an outer wall of walling of flue 71.
The material of making dielectric-slab 50 and dielectric-slab 51 is low-loss, exotic material, and available teflon, glass fibre strengthen the tetrafluoro plate and aluminium oxide ceramics is made.
The thickness of dielectric-slab 50 and dielectric-slab 51 is between 0.5-2.5 millimeters.
The utility model has the advantages that, can measure the carbon content of fume duct fly ash in real time.When measuring the carbon content of fume duct fly ash, do not need to gather the fume duct fly ash sample, can not take place to incur loss through delay the situation that carbon content is measured because of sample pipe plug ash yet.The utility model is simple in structure, is easy to make and install.Be specially adapted to be installed on the flue of heat power plant boiler, realize real-time monitoring the boiler combustion operating mode, and then can be manually or automatically carry out control, improve boiler efficiency, reduce cost of electricity-generating.
Accompanying drawing 1 is a background technology, the synoptic diagram that the microwave remote sensor of fume duct fly ash carbon content is connected with the microwave transmitting and receiving measuring system.
Accompanying drawing 2 is the synoptic diagram that the online microwave remote sensor of the utility model fume duct fly ash carbon content is connected with the microwave transmitting and receiving measuring system.
Accompanying drawing 3 is for emission loudspeaker 3 of the present utility model and accept loudspeaker 10 and be installed in synoptic diagram on the flue outer wall.
Accompanying drawing 4 is emission loudspeaker 3 of the present utility model and the structural drawing of accepting loudspeaker 10, wherein belongs to the Reference numeral of accepting loudspeaker 10 and places in the bracket.
Embodiment of the present utility model is further described in conjunction with the accompanying drawings: as shown in drawings, microwave remote sensor must with the coupling of microwave transmitting and receiving measuring system: emission loudspeaker 3 and the hydraucone of accepting loudspeaker 10 are shaped on respectively for the edge 4 and the edge 9 that install and fix usefulness, by edge 4 and edge 9, launch loudspeaker 3 and accept loudspeaker 10 are fixed in flue respectively through dielectric-slab 50 and dielectric-slab 51 walling of flue 70 and walling of flue 71 and outer wall relative, that have transmitting aperture 60 and receiving orifice 61.Emission loudspeaker 3 with accept loudspeaker 10 and be connected with wave detector 11 with isolator 2 microwave sources 1 of this measuring system respectively.Dielectric-slab 50 and dielectric-slab 51 have two effects: one, and they are equivalent to the tube wall of sample hose 14, allow electromagnetic wave to pass through undampedly; Its two, they stop that fume duct fly ash enters emission loudspeaker 3 and accepts the cavity of loudspeaker 10 through transmitting aperture 60 and receiving orifice 61.Flying dust 80 is equivalent to the cigarette flying dust sample 81 in the sample hose 14, sees accompanying drawing 2.Because flying dust 80 is just to flow to flue from burner hearth before several seconds, so the unburned carbon in flue dust of the display of data processing and display 13 part is an index that can be used for representing the real-time combustion conditions of boiler.Utilize this index to implement manually or control in real time automatically, thereby improve the efficient of boiler and the fuel of saving boiler the boiler combustion operating mode.
Claims (1)
- A kind of online microwave remote sensor of fume duct fly ash carbon content, comprise a pair of pyramid loudspeaker staggered relatively, it is characterized in that the hydraucone of launching loudspeaker 3 and accepting loudspeaker 10 is shaped on respectively for the edge 4 and the edge 9 that install and fix usefulness, by edge 4 and edge 9, emission loudspeaker 3 with accept loudspeaker 10 and be fixed in the relative of flue through dielectric-slab 50 with dielectric-slab 51 respectively, have the walling of flue 70 of transmitting aperture 60 and receiving orifice 61 and the outer wall of walling of flue 71.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01210622 CN2465180Y (en) | 2001-02-21 | 2001-02-21 | Online microwave sensor for carbon content in fly ash of flue duct |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01210622 CN2465180Y (en) | 2001-02-21 | 2001-02-21 | Online microwave sensor for carbon content in fly ash of flue duct |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2465180Y true CN2465180Y (en) | 2001-12-12 |
Family
ID=33630141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01210622 Expired - Fee Related CN2465180Y (en) | 2001-02-21 | 2001-02-21 | Online microwave sensor for carbon content in fly ash of flue duct |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2465180Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406875C (en) * | 2003-10-20 | 2008-07-30 | 郑忠信 | Microwave carbon-detection sensor uninfluenced by change of coal type |
| CN105115990A (en) * | 2015-09-01 | 2015-12-02 | 解海龙 | Sampling-free detection method applied to microwave carbon examination and carried out at dust outlet of dry collector |
| CN105784725A (en) * | 2016-04-22 | 2016-07-20 | 中北大学 | Device and method for extracting chemical parameters in harsh environment |
| CN111141761A (en) * | 2019-12-28 | 2020-05-12 | 中电华创电力技术研究有限公司 | Power station boiler flying dust on-line sampling monitoring system |
-
2001
- 2001-02-21 CN CN 01210622 patent/CN2465180Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100406875C (en) * | 2003-10-20 | 2008-07-30 | 郑忠信 | Microwave carbon-detection sensor uninfluenced by change of coal type |
| CN105115990A (en) * | 2015-09-01 | 2015-12-02 | 解海龙 | Sampling-free detection method applied to microwave carbon examination and carried out at dust outlet of dry collector |
| CN105784725A (en) * | 2016-04-22 | 2016-07-20 | 中北大学 | Device and method for extracting chemical parameters in harsh environment |
| CN111141761A (en) * | 2019-12-28 | 2020-05-12 | 中电华创电力技术研究有限公司 | Power station boiler flying dust on-line sampling monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |