CN205481110U - Furnace temperature on -line monitoring system based on acoustic technique - Google Patents
Furnace temperature on -line monitoring system based on acoustic technique Download PDFInfo
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- CN205481110U CN205481110U CN201620164575.1U CN201620164575U CN205481110U CN 205481110 U CN205481110 U CN 205481110U CN 201620164575 U CN201620164575 U CN 201620164575U CN 205481110 U CN205481110 U CN 205481110U
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- acoustic
- temperature
- signal
- sound wave
- line monitoring
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Abstract
The utility model provides a pair of furnace temperature on -line monitoring system based on acoustic technique, this system are the autonomous system, do not influence the operation of the any equipment of unit, an electronic sound source, power is big, frequency range is adjustable, can provide sufficient acoustic pressure level for detecting the sound source of temperature adopts and independently designs. the transaudient detector of electret formula enhancement mode that the sound wave detector adopted, sensitivity is high, can bear high temperature. The sound wave pipe can play effect thermal -insulated, that accessory substance and protection microphone are burnt in the isolation.
Description
Technical field
This utility model relates to system for detecting temperature, is specifically related to a kind of fire box temperature based on acoustic technique and exists
Line monitoring system.
Background technology
Power plant boiler burning optimization is the key point that thermal power plant is safe, energy-conservation and reduces discharging.More and more
Large-scale machine set have employed combustion retrofit technology (such as low NO, overfire air ejector, air-coal separating skill
Art etc.), to ensure Unit Economic, safe and stable operation, reduce the generation of NOX, meet the requirement of environmental protection.
But for a long time, do not have one reliably and accurately to measure the means of fire box temperature (field), make optimization fire
Burn the foundation losing directly monitoring and differentiating.Temperature is one of important basic parameter describing thermal procession, is
Relate to the key factor of power plant safety, control and efficiency.Station boiler internal temperature field is monitored and controls
System, can prevent that furnace exit temperature is too high causes superheater coking and overtemperature of tube wall；Correct burning unbalanced,
Find in time and adjust both sides cigarette temperature, the deviation of steam temperature；Optimize coal-air ratio, improve efficiency of combustion, prevent pot
Stove hot-spot；Reduce the discharge of NOX, control the characteristic of ash, improve whole efficiency.
Burner hearth thermometry
Burner hearth internal-combustion detection has highly important effect for safety and the economy of unit.Tradition
Temperature measuring device for hearth mainly have contact and contactless two classes
Contact: thermocouple, burner hearth cigarette temperature probe
The advantage of this method is simple and reliable, measures directly perceived；Shortcoming is to be only capable of realizing point to measure, and measures temperature and is subject to
Limit, it is impossible to realize monitoring continuously.(limited by heatproof, normally only stretch into burner hearth when boiler startup and measure outlet
Flue-gas temperature, when cigarette temperature reaches certain value, it is necessary to exit burner hearth at once, and therefore, it allows to use temperature
Scope and effect are the most limited).
Contact: optics thermometric: infrared type thermometer laser temperature-measuring optical projection temperature rebuilding
The advantage of this kind of measuring method is that thermometric is convenient；Shortcoming be to measure environment requirement harsher for
In burner hearth environment, measurement error is bigger.The surveyed flat resolution of laser straightline propagation is low, somewhat expensive.
Utility model content
For solving above-mentioned technical problem, this utility model provides a kind of fire box temperature based on acoustic technique and exists
Line monitoring system, its objective is that can realize boiler furnace cigarette temperature probe substitutes, and carries out burner hearth point thermal monitoring,
Operating flue gas temperature of hearth outlet is monitored, prevents Boiler Furnace slagging, and the monitoring of furnace tube leakage.
A kind of fire box temperature on-line monitoring system based on acoustic technique, comprising:
Burner hearth；
Temperature-detecting device, described temperature-detecting device is arranged in burner hearth, described temperature-detecting device bag
Including sound wave generating device and acoustic receiver device, described sound wave generating device is used for sending acoustic wave temperature inspection
Surveying signal to be used for detecting the temperature in burner hearth, described acoustic receiver device is used for receiving sound wave generating device institute
The acoustic wave temperature detection signal sent；
Signal calls in processor, for being converted into by the acoustic wave temperature detection signal receiving sound wave generating device reception
For analogue signal；
Signal input/output unit, for calling in the analog signal output of processor in detection microcomputer by signal；
Detection microcomputer, is shown in the display screen of detection microcomputer for inputting a signal into the signal of output device output
On.
Further, several acoustic emission measuring points and acoustic receiver measuring point, institute it are provided with in described burner hearth
The acoustic emission measuring point stated is provided with sound wave generating device, and described acoustic receiver measuring point is provided with acoustic receiver
Device.
Further, described sound wave generating device includes acoustic waveguide tube, and one end of described acoustic waveguide tube connects
There is sonic generator, described acoustic waveguide tube is provided with sound wave detector.
Further, described acoustic receiver device includes acoustic waveguide tube, and described acoustic waveguide tube connects sound wave
Receptor.
A kind of based on acoustic technique the fire box temperature on-line monitoring system that this utility model provides, its useful effect
Fruit is: this system is autonomous system, does not affect the operation of any equipment of unit；For detecting the sound of temperature
Source uses the electronic sound source of autonomous Design, and power is big, frequency range is adjustable, is provided that enough sound pressure levels.
The transaudient detector of electret-type enhancement mode that sound wave detector uses, highly sensitive, it is possible to bear high temperature.Sound
Waveguide can play heat insulation, isolation combustion by-products and the effect of protection microphone.Certainty of measurement is high, room temperature
Under thermometric resolution be 0.2 DEG C, hot lower thermometric resolution is 6 DEG C.Measurement dynamic range is big, thermometric model
Enclose up to 0～2000 DEG C, fully meet the measurement requirement that boiler runs under various loads.Measurement object is many,
Can be applicable to multiple load boiler, adapt to the multiple combustion system type of furnace such as opposed firing, quadrangle tangential circle.Profit
By physical characteristic, in not burnt, the radiation effect of miscellaneous part in hearth wall and stove, does not has boiler body
Any injury, measures in real time, does not has temperature drift, and accuracy is high, and equipment is without catabiosis, regular maintenance
Amount is few.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below by right
In embodiment or description of the prior art, the required accompanying drawing used is briefly described.
Accompanying drawing 1 is that in this utility model, the structure of fire box temperature on-line monitoring system based on acoustic technique is shown
It is intended to；
Accompanying drawing 2 is sound wave on-line monitoring structure chart in this utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, to the technical side in this utility model embodiment
Case is clearly and completely described.
The present embodiment as shown in Figures 1 and 2,
A kind of fire box temperature on-line monitoring system based on acoustic technique, comprising:
Burner hearth 1；
Temperature-detecting device, described temperature-detecting device is arranged in burner hearth 1, described temperature-detecting device
Including sound wave generating device 21 and acoustic receiver device 22, described sound wave generating device is used for sending sound wave
Temperature detection signal is for detecting the temperature in burner hearth 1, and described acoustic receiver device 22 is used for receiving sound wave
The acoustic wave temperature detection signal that generating means 21 is sent；
Signal calls in processor 3, turns for the acoustic wave temperature detection signal received by reception sound wave generating device 21
Change into as analogue signal；
Signal input/output unit 4, for calling in the analog signal output of processor 3 in detection microcomputer by signal
5；
Detection microcomputer 5, is shown in the aobvious of detection microcomputer 5 for inputting a signal into the signal of output device 4 output
In display screen 6, in described burner hearth 1, it is provided with several acoustic emission measuring points and acoustic receiver measuring point, described
Acoustic emission measuring point be provided with sound wave generating device 21, described acoustic receiver measuring point is provided with acoustic receiver
Device 22, described sound wave generating device 21 includes acoustic waveguide tube 211, the one of described acoustic waveguide tube 211
End connection has sonic generator 212, and described acoustic waveguide tube 211 is provided with sound wave detector 213, described
Acoustic receiver device 22 include acoustic waveguide tube 221, described acoustic waveguide tube 221 connects acoustic receiver
222。
A kind of based on acoustic technique the fire box temperature on-line monitoring system that this utility model provides, this system is
Autonomous system, does not affect the operation of any equipment of unit；Autonomous Design is used for detecting the sound source of temperature
Electronic sound source, power is big, frequency range is adjustable, is provided that enough sound pressure levels.Sound wave detector uses
The transaudient detector of electret-type enhancement mode, highly sensitive, it is possible to bear high temperature.Acoustic waveguide tube can play heat insulation,
Isolation combustion by-products and the effect of protection microphone.Certainty of measurement is high, and the thermometric resolution under room temperature is 0.2
DEG C, hot lower thermometric resolution is 6 DEG C.Measurement dynamic range is big, and temperature-measuring range is up to 0～2000 DEG C, complete
The measurement requirement that full up sufficient boiler runs under various loads.Measurement object is many, can be applicable to multiple load pot
Stove, adapts to the multiple combustion system type of furnace such as opposed firing, quadrangle tangential circle.Utilize physical characteristic, do not fired
In burning, the radiation effect of miscellaneous part in hearth wall and stove, does not have any injury, measures in real time boiler body,
Not having temperature drift, accuracy is high, and equipment is without catabiosis, and regular maintenance amount is few.
The described above of embodiment disclosed in the utility model, makes professional and technical personnel in the field be capable of
Or use this utility model.Multiple amendment to these embodiments for those skilled in the art will
Being apparent from, generic principles defined herein can be without departing from spirit of the present utility model or model
In the case of enclosing, realize in other embodiments.Therefore, this utility model is not intended to be limited to institute herein
These embodiments shown, and it is to fit to consistent with principles disclosed herein and features of novelty the widest
Scope.
Claims (4)
1. a fire box temperature on-line monitoring system based on acoustic technique, it is characterised in that comprising:
Burner hearth (1)；
Temperature-detecting device, described temperature-detecting device is arranged in burner hearth (1), described temperature detection
Device includes sound wave generating device (21) and acoustic receiver device (22), and described sound wave generating device is sent out
Acoustic wave temperature is sent to detect signal temperature in detecting burner hearth (1), described acoustic receiver device (22)
For receiving the acoustic wave temperature detection signal that sound wave generating device (21) is sent；
Signal calls in processor (3), for receiving the acoustic wave temperature detection that sound wave generating device (21) receives
Signal is converted into analogue signal；
Signal input/output unit (4), for calling in the analog signal output of processor (3) in inspection by signal
Micrometer machine (5)；
Detection microcomputer (5), is used for inputting a signal into the signal that output device (4) exports and is shown in detection microcomputer
(5) on display screen (6).
A kind of fire box temperature on-line monitoring system based on acoustic technique the most according to claim 1, its feature
It is, in described burner hearth (1), is provided with several acoustic emission measuring points and acoustic receiver measuring point, described
Acoustic emission measuring point is provided with sound wave generating device (21), and described acoustic receiver measuring point is provided with acoustic receiver
Device (22).
3. according to a kind of based on acoustic technique the fire box temperature on-line monitoring system described in claims 1 or 2,
It is characterized in that, described sound wave generating device (21) includes acoustic waveguide tube (211), described acoustic duct
One end of pipe (211) connects sonic generator (212), and described acoustic waveguide tube (211) is provided with
Sound wave detector (213).
4. according to a kind of based on acoustic technique the fire box temperature on-line monitoring system described in claims 1 or 2,
It is characterized in that, described acoustic receiver device (22) includes acoustic waveguide tube (221), described acoustic duct
Pipe (221) connects acoustic receiver (222).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620164575.1U CN205481110U (en) | 2016-03-03 | 2016-03-03 | Furnace temperature on -line monitoring system based on acoustic technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620164575.1U CN205481110U (en) | 2016-03-03 | 2016-03-03 | Furnace temperature on -line monitoring system based on acoustic technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205481110U true CN205481110U (en) | 2016-08-17 |
Family
ID=56659195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620164575.1U Expired - Fee Related CN205481110U (en) | 2016-03-03 | 2016-03-03 | Furnace temperature on -line monitoring system based on acoustic technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205481110U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605611A (en) * | 2016-03-03 | 2016-05-25 | 江苏中能电力设备有限公司 | Acoustic technology based furnace box temperature online monitoring system |
| CN106680368A (en) * | 2016-12-06 | 2017-05-17 | 深圳东方锅炉控制有限公司 | Sound wave temperature-measuring sounding device and receiving device |
| CN109990916A (en) * | 2017-12-29 | 2019-07-09 | 国电科学技术研究院有限公司 | A kind of measurement method and system of fire box temperature |
-
2016
- 2016-03-03 CN CN201620164575.1U patent/CN205481110U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105605611A (en) * | 2016-03-03 | 2016-05-25 | 江苏中能电力设备有限公司 | Acoustic technology based furnace box temperature online monitoring system |
| CN106680368A (en) * | 2016-12-06 | 2017-05-17 | 深圳东方锅炉控制有限公司 | Sound wave temperature-measuring sounding device and receiving device |
| CN106680368B (en) * | 2016-12-06 | 2020-05-05 | 深圳东方锅炉控制有限公司 | Sound wave temperature measurement sound generating mechanism and receiving arrangement |
| CN109990916A (en) * | 2017-12-29 | 2019-07-09 | 国电科学技术研究院有限公司 | A kind of measurement method and system of fire box temperature |
| CN109990916B (en) * | 2017-12-29 | 2020-11-10 | 国电科学技术研究院有限公司 | Method and system for measuring temperature of hearth |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20180303 |