CN106706156A - Ultrasonic-based boiler furnace smoke temperature measuring device - Google Patents
Ultrasonic-based boiler furnace smoke temperature measuring device Download PDFInfo
- Publication number
- CN106706156A CN106706156A CN201710018011.6A CN201710018011A CN106706156A CN 106706156 A CN106706156 A CN 106706156A CN 201710018011 A CN201710018011 A CN 201710018011A CN 106706156 A CN106706156 A CN 106706156A
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- China
- Prior art keywords
- ultrasonic
- transducer
- computer
- channel data
- ultrasonic transducer
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/22—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects
- G01K11/24—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using measurement of acoustic effects of the velocity of propagation of sound
Abstract
The invention belongs to the technical field of high-temperature smoke temperature measurement and especially relates to an ultrasonic-based boiler furnace smoke temperature measuring device. The device comprises a computer, a junction box, a left ultrasonic transducer, a right ultrasonic receiver, a signal conditioner and a double-channel data collection card. The left ultrasonic transducer and the right ultrasonic receiver are arranged symmetrically on the furnace walls at the two sides of a boiler furnace, and are connected with the signal conditioner; the signal conditioner is connected with the double-channel data collection card; the double-channel data collection card is connected with the computer through a USB cable; and the left ultrasonic transducer is connected with the computer through the junction box and receives an ultrasonic signal sent by the computer. The device is not limited by high-temperature, dusty, corrosion and turbulence complex hostile environments and the like in the furnace, has the advantages of non-plug-in, accurate, real-time and portable measurement and the like, can judge combustion condition of a boiler time and is convenient to adjust and control.
Description
Technical field
The invention belongs to high-temperature flue-gas field of measuring technique, more particularly to a kind of boiler furnace cigarette based on ultrasonic wave
Gas temperature measuring equipment.
Background technology
In large-scale coal-fired, oil burning boiler, such as heat power plant boiler, steel-making blast furnace, cement rotary kiln, coker etc.
High-temperature service, the measurement of inner flue gas of the stove temperature is directly connected to stabilization and the optimization of burning, for safe, the economic fortune of equipment
Row is significant.
Conventional flame temperature measurement method is divided into two kinds of non-contact type temperature measurement and contact type temperature measuring.Contact
Thermometry has conventional thermocouple thermometer, expansion type idol thermometer, pressure mode temperature meter, blackbody chamber thermometer and light
Fine thermometry, for example, high temperature measurement is realized using bleeder high-temperature flue gas probe, its essence is former based on thermocouple measurement
Reason, the method needs complicated cooling device, and when being only used for ignition of the boiler, prevents pipeline overtemperature from doing short time measurement,
Probe is automatically exited from during more than 540 DEG C, it is impossible to realize real-time measurement during boiler operatiopn.Limited by physical factor, contact temperature
Degree measuring method is only used in laboratory or in-furnace temperature region less high, and it has the disadvantage response speed relatively slow, error
It is larger, it is difficult to realize temperature field measurement.
Non-contact type temperature measurement is divided into optical method and acoustic method, although optical method is current laboratory flames research and examines
Disconnected Main Means, but its measuring method based on laser technology does not adapt to Temperature Distribution of being burnt in large-sized stove
Measurement.From the foregoing, it will be observed that existing boiler furnace smoke temperature measurement method error is larger, it is impossible to realize reality during boiler operatiopn
When measure.The practical e measurement technology that acoustic method is distributed as high-temperature flue-gas in actual industrial burner hearth, with measurement essence
Degree is high, temperature-measuring range is wide, measurement space is big, noncontact, real-time continuous operation, it is easy to maintenance the advantages of, be increasingly subject to pay attention to
Using, it has also become the focus studied both at home and abroad at present.
The content of the invention
Regarding to the issue above, the present invention proposes a kind of boiler furnace smoke temperature measurement device based on ultrasonic wave, should
Device can realize steady in a long-term to chamber flue gas temperature, accurate, real-time on-line monitoring.
The device includes：Computer, terminal box, left ultrasonic transducer, right ultrasonic receiver, signal conditioner and bilateral
Track data capture card, the left ultrasonic transducer and the right ultrasonic receiver set in the both sides furnace wall symmetric position of burner hearth
Put, and connect the signal conditioner respectively, the signal conditioner connects the double channel data acquisition card, the binary channels
Data collecting card connects the computer by USB line, and the left ultrasonic transducer connects the computer by the terminal box
And receive the ultrasonic signal that the computer sends.
Further, flange is passed through between the left ultrasonic transducer, the right ultrasonic receiver and the boiler
Connection, is easy to assemble, dismantle and change.Transducer itself can not only be received as ultrasonic wave transmitting terminal but also as ultrasonic wave
End.
Further, the left ultrasonic transducer, the right ultrasonic receiver use column type transducer, and acoustic resistance exists
Change uniform near cut-off frequency, directive property is strong, is easy to the straightline propagation of sound wave.
Further, the left ultrasonic transducer, right ultrasonic receiver are encapsulated in stainless steel sleeve pipe, prevent stove
Flying dust produces deposition due to self gravitation in thorax, influences transaudient effect.
Further, there is the double channel data acquisition card two-way to export and two-way input, correspond to respectively described left super
Acoustic wave transducer and the right ultrasonic receiver send sound wave or receive sound wave.
Further, the signal conditioner is filtered and amplifies to the ultrasonic signal for receiving.
Further, the computer selects notebook computer, is connected with double channel data acquisition card with USB line, forms one
Set portable measurement system.
The present invention proposes a kind of new boiler furnace smoke temperature measurement device based on ultrasonic wave, and it is in Boiler Furnace
It is each in the furnace wall symmetric position of thorax both sides that a ultrasonic transducer and ultrasonic receiver are installed；As the ultrasonic waves of transmitting terminal
Can device send ultrasonic signal, while received as the ultrasonic transducer of receiving terminal by offside and be converted into voltage signal,
Data signal is converted to by being input into double channel data acquisition card with cable after signal conditioner, then is drawn by cross-correlation analysis
Sound wave flies over the time, finally calculates flue-gas temperature through computer and software.
Device of the present invention is not limited by the complexity adverse circumstances such as furnace high-temperature, many dirt, burn into turbulent flow, is inserted with non-
Enter the advantages of formula, accurate, real-time, portable measurement, can in time judge the combustion case of boiler, be easy to adjust and control.
Brief description of the drawings
Fig. 1 is the structural representation of the boiler furnace smoke temperature measurement device based on ultrasonic wave
Specific embodiment
Below in conjunction with the accompanying drawings, embodiment is elaborated.
Fig. 1 is the structural representation of the boiler furnace smoke temperature measurement device based on ultrasonic wave, as shown in figure 1, in stove
The furnace wall side wall middle part above symmetric position of thorax (4) is respectively mounted left ultrasonic transducer (3-1) and right ultrasonic receiver (3-
2), left ultrasonic transducer (3-1) connects computer (1), left ultrasonic transducer (3-1) and right ultrasonic wave by terminal box (2)
Receiver (3-2) is all connected to signal conditioner (5), and signal conditioner (5) is connected with double channel data acquisition card (6), bilateral
Track data capture card (6) corresponds to left ultrasonic transducer (3-1) and right ultrasonic wave connects respectively with two-way output and two-way input
Device (3-2) is received sound wave occurs or sound wave is received；Double channel data acquisition card (6) is connected to by USB line and uses notebook computer
Computer (1), form a set of portable measurement system.
Transducer itself both can be as ultrasound emission end, again can be as ultrasonic reception end.Wherein, left ultrasonic wave transducer
Device (3-1) and right ultrasonic receiver (3-2) use column type transducer, and acoustic resistance changes uniformly near cut-off frequency, directive property
By force, it is easy to the straightline propagation of sound wave.Left ultrasonic transducer (3-1) and right ultrasonic receiver (3-2) are encapsulated in stainless steel
In sleeve pipe, can effectively prevent burner hearth (4) interior flying dust from deposition is produced due to self gravitation, influence transaudient effect.Left ultrasonic wave
Transducer (3-1), right ultrasonic receiver (3-2) are connected between boiler by flange, are easy to assemble, dismantle and change.
Acoustic measurement flue-gas temperature principle is：Ultrasonic wave can be shifted out onto according to thermodynamic principles and ultrasonic wave wave equation
There is following relation with the temperature of medium in spread speed in media as well：
V=f (γ, R, m, T)
Wherein, v represents spread speed of the ultrasonic wave in gas, and γ represents the adiabatic exponent of gas, and R represents the general of gas
Suitable constant, m represents the molecular weight of gas, and T represents gas temperature.Therefore, when be aware of the adiabatic exponent of gas, universal constant and
Molecular weight, can calculate gas temperature by measuring the speed of ultrasonic wave.
Operationally, notebook computer software produces ultrasonic signal to described device, and left ultrasonic wave is entered by terminal box (2)
Transducer sends (3-1), by the way that after burner hearth, ultrasonic signal is by the right ultrasonic receiver (3- of ultrasonic transducer (3-1) offside
2) detect；Ultrasonic signal is converted into voltage signal as the ultrasonic transducer of receiving terminal, and by signal conditioner (5)
Filtering and amplification, are obtained by double channel data acquisition card (6)；Signal and reception that software in notebook computer (1) will send
To signal carry out cross-correlation analysis, show that the ultrasonic wave between two transducers flies over the time, due between two transducers
Distance fix and, it is known that and then calculate spread speed of the sound wave between two transducers, and then by relational expression v=f
(γ, R, m, T), obtains the flue-gas temperature of burner hearth, and temperature value is given in the software display window of notebook computer.
This embodiment is only the present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (6)
1. a kind of boiler furnace smoke temperature measurement device based on ultrasonic wave, it is characterised in that the device includes：Computer, connect
Line box, left ultrasonic transducer, right ultrasonic receiver, signal conditioner and double channel data acquisition card, the left ultrasonic wave
Transducer and the right ultrasonic receiver are set in the both sides furnace wall symmetric position of burner hearth, and connect the signal condition respectively
Device, the signal conditioner connects the double channel data acquisition card, and the double channel data acquisition card connects institute by USB line
Computer is stated, the left ultrasonic transducer connects the computer and receives the ultrasound letter that the computer sends by the terminal box
Number.
2. device according to claim 1, it is characterised in that the left ultrasonic transducer, the right ultrasonic wave are received
It is detachably connected by flange between device and the boiler.
3. device according to claim 1, it is characterised in that the left ultrasonic transducer, the right ultrasonic wave are received
Using column type transducer, the cylindricality transducer can not only be received as ultrasonic wave transmitting terminal but also as ultrasonic wave device
End.
4. device according to claim 1, it is characterised in that the left ultrasonic transducer, right ultrasonic receiver are equal
It is encapsulated in stainless steel sleeve pipe.
5. device according to claim 1, it is characterised in that there is the double channel data acquisition card two-way to export and two
Road is input into, and the left ultrasonic transducer is corresponded to respectively and the right ultrasonic receiver sends sound wave or receives sound wave.
6. device according to claim 1, it is characterised in that the signal conditioner is carried out to the ultrasonic signal for receiving
Filtering and amplification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018011.6A CN106706156A (en) | 2017-01-11 | 2017-01-11 | Ultrasonic-based boiler furnace smoke temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710018011.6A CN106706156A (en) | 2017-01-11 | 2017-01-11 | Ultrasonic-based boiler furnace smoke temperature measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106706156A true CN106706156A (en) | 2017-05-24 |
Family
ID=58908288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710018011.6A Pending CN106706156A (en) | 2017-01-11 | 2017-01-11 | Ultrasonic-based boiler furnace smoke temperature measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN106706156A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575886A (en) * | 2017-09-04 | 2018-01-12 | 湖北亚钢金属制造有限公司 | A kind of burner hearth cools down warning device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61265540A (en) * | 1985-05-20 | 1986-11-25 | Tokyo Electric Power Co Inc:The | Method for measuring temperature of gas |
| CN101403643A (en) * | 2008-11-14 | 2009-04-08 | 华北电力大学 | Apparatus for measuring combustion chamber flue gas temperature by utilizing acoustics |
| CN201307039Y (en) * | 2008-11-18 | 2009-09-09 | 华北电力大学 | Device for acoustic measurement of the smoke-gas temperature in the hearth |
| 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 |
| CN204007929U (en) * | 2014-09-02 | 2014-12-10 | 桂林市特种设备检验所 | A kind of temperature measuring device for hearth |
-
2017
- 2017-01-11 CN CN201710018011.6A patent/CN106706156A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61265540A (en) * | 1985-05-20 | 1986-11-25 | Tokyo Electric Power Co Inc:The | Method for measuring temperature of gas |
| CN101403643A (en) * | 2008-11-14 | 2009-04-08 | 华北电力大学 | Apparatus for measuring combustion chamber flue gas temperature by utilizing acoustics |
| CN201307039Y (en) * | 2008-11-18 | 2009-09-09 | 华北电力大学 | Device for acoustic measurement of the smoke-gas temperature in the hearth |
| 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 |
| CN204007929U (en) * | 2014-09-02 | 2014-12-10 | 桂林市特种设备检验所 | A kind of temperature measuring device for hearth |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575886A (en) * | 2017-09-04 | 2018-01-12 | 湖北亚钢金属制造有限公司 | A kind of burner hearth cools down warning device |
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