CN101581609A - Method for measuring furnace outlet temperature field and device system thereof - Google Patents
Method for measuring furnace outlet temperature field and device system thereof Download PDFInfo
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- CN101581609A CN101581609A CNA2009100626921A CN200910062692A CN101581609A CN 101581609 A CN101581609 A CN 101581609A CN A2009100626921 A CNA2009100626921 A CN A2009100626921A CN 200910062692 A CN200910062692 A CN 200910062692A CN 101581609 A CN101581609 A CN 101581609A
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- temperature field
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Abstract
The invention relates to a method for measuring furnace outlet temperature field and device system thereof, and the device system comprises: a wave guide, a microphone, a preamplifier, a signal cable, a control line, a magnetic valve, a control box, a data collecting card, a computer, a monitor and a system software. The distribution situation of furnace outlet temperature field can be detected so that the combustion condition in a furnace can be clearly observed, the fuel utilization is increased, the coking and deposition in a furnace is effectively prevented, and NOx discharging is reduced.
Description
Technical field
A kind of method and apparatus system of measuring the furnace outlet cross-section temperature field
Background technology
The basic demand of combustion of industrial boiler is to set up and keep stable combustion flame, and combustion instability not only can reduce boiler thermal output, produces pollutant and noise, and under extreme case, can cause the boiler furnace fire extinguishing, as deal with improperly and can bring out furnace puff, cause the accident.In addition, feature such as industrial combustion process has transient changing, turbulent flow, the huge environment of equipment size be abominable at random, brought difficulty for the on-line measurement of relevant hot Physical Quantity Field parameter, be difficult to obtain to describe the hot Physical Quantity Field parameter of Actual combustion process, particularly the measurement of Temperature Distribution is very difficult, cause burning adjustment to can not get reliable foundation, the burning optimization operation can't realize.What the limitation of tradition temperature sensing means was that DCS can monitor only is the information that flame has/do not have; Flame TV can Direct observation furnace flame image, and flame has/do not have and certain heat color information but only provide qualitatively, does not have quantitative temperature information; Cigarette temperature probe only monitors furnace outlet gas temperature in start-up course, but can not monitor by full load mode.
Summary of the invention
The object of the present invention is to provide a kind of method and apparatus system of measuring the furnace outlet cross-section temperature field.
To achieve these goals, technical scheme of the present invention is: a kind of method and apparatus system of measuring the furnace outlet cross-section temperature field is characterized in that it comprises the steps:
A) sound generation source
B) by microphone reception sound signal
C) through the signal cable received signal
D) sound signal is entered computing machine by data collecting card, simulating signal is converted into digital signal, audio frequency is analyzed, calculate path velocity of sound C by special-purpose sonication software package.Simulate temperature field isothermal map, path medial temperature, block medial temperature by the path acoustic velocity value by series of algorithms again.Its mathematic(al) representation is as follows:
Wherein: the velocity of sound of V-in certain gas, m/s;
D-sonic propagation distance, m;
The t-sound wave flight time, s;
The coefficient of r-specific gas under the level pressure constant volume;
The R-gas law constant, 8.314J/ (mol*K);
T-absolute temperature, K;
The M-molecular weight gas, kg/mol.
The acoustic sensor of some is installed around boiler, is at first measured flight time t, just can reconstruct the temperature information in a certain cross section, temperature field then by reconstruction algorithm and computing machine.
Described system software carries out according to the following step:
A) read sound signal
B) send into the data collecting card acquisition process
C) PLC Based Intelligent Control sound source
D) through PC accounting temperature field
It can detect the distribution situation of furnace outlet cross-section temperature field, thereby can clearly observe burner hearth internal-combustion operating mode, improves fuel availability, effectively prevents burner hearth generation coking fouling phenomenon and reduce NO
XDischarging.
Description of drawings
Fig. 1 is a system architecture synoptic diagram of the present invention;
Number in the figure: 1-data collecting card, 2-computing machine, 3-signal cable, 4-control line, 5-microphone, 6-prime amplifier, 7-waveguide pipe, 8-solenoid valve, 9-control box, 10-display
Embodiment
Further describe the present invention below in conjunction with accompanying drawing:
It comprises a kind of method of measuring the furnace outlet cross-section temperature field and apparatus system: be installed in (7) waveguide pipe, (5) microphone, (6) prime amplifier, (3) signal cable, (4) control line, (8) solenoid valve, (9) control box, (1) data collecting card, (2) computing machine, (10) display and the system software that detect mouthful; Described (5) microphone connects (6) prime amplifier, and inserts (1) data collecting card by (3) signal cable, inserts (2) computing machine then; The sound field that produces receives high impedance signal through (5) microphone, after (6) prime amplifier signal condition is sent in (1) data collecting card, draw required path average temperature value by analyzing and processing, rebuild cross-section temperature field through the The Fitting Calculation of system software again data; Described system software comprises: menu shows legend, isotherm profile, the block temperature information of changing trend diagram, passage or block temperature curve, passage demonstration, temperature statistics in time.
These invention characteristics:
Determine in real time the spatial temperature distribution state of burner hearth internal combustion field; Non-intrusion type, full-automation do not need regular maintenance, can grow Phase stablizes, works reliably; And the limitation of traditional temperature sensing means is DCS can monitor only be flame with/without information; Flame TV can directly observe the furnace flame image, but only provide qualitatively flame with/without with certain heat color information, do not have Quantitative temperature information; Cigarette temperature probe only monitors furnace outlet gas temperature in start-up course, but can not monitor by full load mode.
Claims (5)
1, a kind of method and apparatus system of measuring the furnace outlet cross-section temperature field is characterized in that it comprises the following steps:
A) gases at high pressure produce sound source
B) by microphone reception sound signal
C) through the signal cable received signal
D) sound signal is entered computing machine by data collecting card, simulating signal is converted into digital signal, audio frequency is analyzed, calculate path velocity of sound C by special-purpose sonication software package.Simulate temperature field isothermal map, path medial temperature, block medial temperature by the path acoustic velocity value by series of algorithms again.Its mathematic(al) representation is as follows:
Wherein: the velocity of sound of V-in certain gas, m/s;
D-sonic propagation distance, m;
The t-sound wave flight time, s;
The coefficient of r-specific gas under the level pressure constant volume;
The R-gas law constant, 8.314J/ (mol*K);
T-absolute temperature, K;
The M-molecular weight gas, kg/mol.
The acoustic sensor of some is installed around boiler, is at first measured flight time t, just can reconstruct the temperature information in a certain cross section, temperature field then by reconstruction algorithm and computing machine.
2, the method and the apparatus system of measurement furnace outlet cross-section temperature field according to claim 1 is characterized in that described system software carries out according to the following step:
A) read sound signal
B) send into the data collecting card acquisition process
C) PLC Based Intelligent Control sound source
D) through PC accounting temperature field
3, the method and the apparatus system of measurement furnace outlet cross-section temperature field according to claim 1 is characterized in that described system software comprises: menu shows legend, isotherm profile, the block temperature information of changing trend diagram, passage or block temperature curve, passage demonstration, temperature statistics in time.
4, a kind of method and apparatus system of measuring the furnace outlet cross-section temperature field, its feature comprises: be installed in (7) waveguide pipe, (5) microphone, (6) prime amplifier, (3) signal cable, (4) control line, (8) solenoid valve, (9) control box, (1) data collecting card, (2) computing machine, (10) display and the system software that detect mouth; Described (5) microphone connects (6) prime amplifier, and inserts (1) data collecting card by (3) signal cable, inserts (2) computing machine then.
5, the method and the apparatus system of measurement furnace outlet cross-section temperature field according to claim 4 is characterized in that described waveguide pipe perforate and connect solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100626921A CN101581609A (en) | 2009-06-17 | 2009-06-17 | Method for measuring furnace outlet temperature field and device system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100626921A CN101581609A (en) | 2009-06-17 | 2009-06-17 | Method for measuring furnace outlet temperature field and device system thereof |
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| CN101581609A true CN101581609A (en) | 2009-11-18 |
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| CNA2009100626921A Pending CN101581609A (en) | 2009-06-17 | 2009-06-17 | Method for measuring furnace outlet temperature field and device system thereof |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101928795A (en) * | 2010-09-02 | 2010-12-29 | 首钢京唐钢铁联合有限责任公司 | Device and method for measuring gas temperature field of blast furnace throat |
| CN101995207A (en) * | 2009-08-17 | 2011-03-30 | 宝钢集团新疆八一钢铁有限公司 | Equal displacement mechanical transmission type device for detecting equipment motion displacement |
| CN102102870A (en) * | 2011-01-14 | 2011-06-22 | 华北电力大学 | Furnace chamber ash-dirt subarea on-line monitoring device based on acoustic thermometry |
| CN102410885A (en) * | 2011-08-22 | 2012-04-11 | 蒋培 | Method for measuring temperature by using non-intruding sound wave and system thereof |
| CN102818653A (en) * | 2012-08-15 | 2012-12-12 | 华北电力大学 | Temperature on-line monitoring system and method of molten steel in steel ladle |
| CN102967845A (en) * | 2012-11-09 | 2013-03-13 | 华立仪表集团股份有限公司 | Method and device for testing electric parameters of electric energy measuring module |
| CN103336052A (en) * | 2013-06-24 | 2013-10-02 | 华北电力大学 | Indoor relative humidity on-line monitoring system and humidity calculation method |
| CN104330189A (en) * | 2014-10-23 | 2015-02-04 | 中国航天科工集团第三研究院第八三五八研究所 | TDLAS gas temperature measurement detection method based on optical light-splitting system |
| CN106404214A (en) * | 2016-07-07 | 2017-02-15 | 青岛华迪科技有限公司 | Pseudorandom-sequence-based measuring device and method for temperature field of acoustic boiler |
| CN108240873A (en) * | 2018-01-29 | 2018-07-03 | 山西华仁通电力科技有限公司 | A kind of station boiler sound wave thermometric sending device |
-
2009
- 2009-06-17 CN CNA2009100626921A patent/CN101581609A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995207B (en) * | 2009-08-17 | 2015-04-29 | 宝钢集团新疆八一钢铁有限公司 | Equal displacement mechanical transmission type device for detecting equipment motion displacement |
| CN101995207A (en) * | 2009-08-17 | 2011-03-30 | 宝钢集团新疆八一钢铁有限公司 | Equal displacement mechanical transmission type device for detecting equipment motion displacement |
| CN101928795A (en) * | 2010-09-02 | 2010-12-29 | 首钢京唐钢铁联合有限责任公司 | Device and method for measuring gas temperature field of blast furnace throat |
| CN102102870A (en) * | 2011-01-14 | 2011-06-22 | 华北电力大学 | Furnace chamber ash-dirt subarea on-line monitoring device based on acoustic thermometry |
| CN102410885A (en) * | 2011-08-22 | 2012-04-11 | 蒋培 | Method for measuring temperature by using non-intruding sound wave and system thereof |
| CN102818653A (en) * | 2012-08-15 | 2012-12-12 | 华北电力大学 | Temperature on-line monitoring system and method of molten steel in steel ladle |
| CN102967845B (en) * | 2012-11-09 | 2015-07-08 | 华立仪表集团股份有限公司 | Method and device for testing electric parameters of electric energy measuring module |
| CN102967845A (en) * | 2012-11-09 | 2013-03-13 | 华立仪表集团股份有限公司 | Method and device for testing electric parameters of electric energy measuring module |
| CN103336052A (en) * | 2013-06-24 | 2013-10-02 | 华北电力大学 | Indoor relative humidity on-line monitoring system and humidity calculation method |
| CN103336052B (en) * | 2013-06-24 | 2015-12-23 | 华北电力大学 | A kind of indoor relative humidity on-line monitoring system and humidity computing method |
| CN104330189A (en) * | 2014-10-23 | 2015-02-04 | 中国航天科工集团第三研究院第八三五八研究所 | TDLAS gas temperature measurement detection method based on optical light-splitting system |
| CN106404214A (en) * | 2016-07-07 | 2017-02-15 | 青岛华迪科技有限公司 | Pseudorandom-sequence-based measuring device and method for temperature field of acoustic boiler |
| CN106404214B (en) * | 2016-07-07 | 2019-01-25 | 青岛华迪科技有限公司 | Sound wave boiler temperature field measurement device and method based on pseudo-random sequence |
| CN108240873A (en) * | 2018-01-29 | 2018-07-03 | 山西华仁通电力科技有限公司 | A kind of station boiler sound wave thermometric sending device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Yang Gaoli Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20091118 |