CN113916397A - Furnace temperature measurement system - Google Patents
Furnace temperature measurement system Download PDFInfo
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- CN113916397A CN113916397A CN202111163082.8A CN202111163082A CN113916397A CN 113916397 A CN113916397 A CN 113916397A CN 202111163082 A CN202111163082 A CN 202111163082A CN 113916397 A CN113916397 A CN 113916397A
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 34
- 230000003287 optical effect Effects 0.000 claims abstract description 45
- 238000004458 analytical method Methods 0.000 claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 17
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 238000010586 diagram Methods 0.000 claims abstract description 7
- 239000003245 coal Substances 0.000 claims description 6
- 239000000523 sample Substances 0.000 claims description 6
- 238000004861 thermometry Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 description 9
- 239000003570 air Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 238000005495 investment casting Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
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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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention relates to a hearth temperature measurement system. The system comprises: the system comprises a system analysis processing unit, a plurality of optical temperature measuring devices and a plurality of sound wave temperature measuring modules, wherein the optical temperature measuring devices and the sound wave temperature measuring modules are connected with the system analysis processing unit; the optical temperature measuring devices are arranged at the outlet of the combustor of the boiler and are used for measuring the temperature in the combustor, and one optical temperature measuring device corresponds to one combustor; the sound wave temperature measurement modules are arranged on the side wall of the furnace chamber of the boiler in a layered mode, and each sound wave temperature measurement module is used for measuring the temperature of a corresponding plane in the furnace chamber; and the system analysis processing unit is used for drawing a temperature distribution diagram in the hearth according to the temperature in the combustor and the temperature of each plane in the hearth. The invention can comprehensively measure the temperature in the whole hearth.
Description
Technical Field
The invention relates to the field of hearth temperature measurement, in particular to a hearth temperature measurement system.
Background
The improvement of the boiler combustion efficiency is always an important subject for research of each power generation enterprise, however, the improvement of the boiler efficiency requires deeper understanding of the combustion condition in a hearth, the hearth temperature is a very visual operating parameter, the temperature is measured by adopting an optical temperature measuring device in the conventional hearth temperature measurement, and the optical temperature measuring device is only arranged at one point to only measure the temperature of a certain point, so that the overall temperature display in the hearth is not visual, and the temperature monitoring is inaccurate.
Disclosure of Invention
The invention aims to provide a hearth temperature measuring system which can comprehensively measure the temperature in the whole hearth.
In order to achieve the purpose, the invention provides the following scheme:
a furnace temperature measurement system, comprising: the system comprises a system analysis processing unit, a plurality of optical temperature measuring devices and a plurality of sound wave temperature measuring modules, wherein the optical temperature measuring devices and the sound wave temperature measuring modules are connected with the system analysis processing unit;
the optical temperature measuring devices are arranged at the outlet of a combustor of the boiler and are used for measuring the temperature in the combustor, and one optical temperature measuring device corresponds to one combustor; the sound wave temperature measurement modules are arranged on the side wall of the hearth of the boiler in a layered mode, and each sound wave temperature measurement module is used for measuring the temperature of a corresponding plane in the hearth; and the system analysis processing unit is used for drawing a temperature distribution diagram in the hearth according to the temperature in the combustor and the temperature of each plane in the hearth.
Optionally, the acoustic thermometry module includes: a plurality of sonic thermometry devices.
Optionally, the sonic temperature measuring device includes: an acoustic receiver and an acoustic transmitter; the sound wave transmitter is arranged on a first side wall of the hearth, and the sound wave receiver is arranged on a side wall opposite to the first side wall.
Optionally, the optical temperature measuring device includes: the optical temperature measuring probe and the optical signal arithmetic unit are connected through an optical cable; the optical temperature measuring probe is used for measuring an optical pulse signal of flame in the combustor; the optical signal arithmetic unit is used for obtaining the temperature in the combustor according to the optical pulse signal.
Optionally, the furnace temperature measurement system further includes: and the adjusting module is connected with the system analysis processing unit and is used for adjusting the coal feeding amount or the air intake amount of the combustor according to the temperature distribution diagram.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects: the invention relates to a hearth temperature measurement system, which comprises: the system analysis processing unit is connected with the plurality of optical temperature measuring devices and the plurality of sound wave temperature measuring modules; the optical temperature measuring device is arranged at the outlet of the combustor of the boiler and is used for measuring the temperature in the combustor; each sound wave temperature measurement module is arranged on the side wall of the furnace chamber of the boiler in a layered mode and is used for measuring the temperature of a corresponding plane in the furnace chamber; the system analysis processing unit is used for drawing a temperature distribution graph in the hearth according to the temperature in the combustor and the temperature of each plane in the hearth, and because the sound wave temperature measurement can measure the temperature of the whole surface of the hearth, the invention combines two temperature measuring devices to better display a black box in the hearth in front of a user, so that a temperature field in the hearth is more visual, more accurate and more three-dimensional, and the combustion efficiency of the boiler can be better improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a top view of a furnace temperature measurement system according to an embodiment of the present invention;
FIG. 2 is a front view of a furnace temperature measurement system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of the sonic temperature measuring device.
Description of the symbols:
1-sound wave temperature measuring device, 2-optical temperature measuring device, 3-burner, 4-sound wave emitter and 5-sound wave receiver.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a hearth temperature measuring system, as shown in figures 1 and 2, the hearth temperature measuring system comprises: the system comprises a system analysis processing unit, a plurality of optical temperature measuring devices 2 and a plurality of sound wave temperature measuring modules, wherein the optical temperature measuring devices and the sound wave temperature measuring modules are connected with the system analysis processing unit.
The optical temperature measuring devices 2 are arranged at the outlet of the combustor 3 of the boiler and are used for measuring the temperature in the combustor 3, and one optical temperature measuring device 2 corresponds to one combustor 3; the sound wave temperature measurement modules are arranged on the side wall of the hearth of the boiler in a layered mode, and each sound wave temperature measurement module is used for measuring the temperature of a corresponding plane in the hearth; and the system analysis processing unit is used for drawing a temperature distribution diagram in the hearth by adopting the prior art according to the temperature in the combustor 3 and the temperature of each plane in the hearth.
As an optional implementation, the sonic thermometry module comprises: a plurality of sonic thermometry devices 1.
As an alternative embodiment, as shown in fig. 3, the sonic temperature measuring device 1 includes: an acoustic receiver 5 and an acoustic transmitter 4; the sound wave transmitter 4 is arranged on a first side wall of the hearth, and the sound wave receiver 5 is arranged on a side wall opposite to the first side wall. Principle of the acoustic temperature measuring device: the sound wave transmitter 4 sends out sound waves with a certain frequency and reaches the sound wave receiver 5 through the hearth, the time that the sound waves reach the receiver is different due to the fact that the propagation speed of the sound waves is different when the sound waves pass through different temperature fields is utilized, and then the temperature value inside the hearth is obtained through calculation. The propagation speed of the acoustic wave changes with the change in the temperature of the medium. The relationship between the propagation speed of sound wave and the temperature of medium is obtained from the gas equation in thermodynamics and the wave equation of sound wave in acoustics as follows: f (K, R, M, T), C represents the propagation velocity of sound in the medium, K represents the adiabatic index of gas, R represents a gas constant, M represents the gas molecular weight, and T represents the gas temperature, whereby the sound wave propagation velocity is obtained, i.e., the temperature inside the furnace can be calculated.
As an optional implementation, the technical indexes of the acoustic temperature measurement device are as follows:
acoustic properties: and (6) performing electro-acoustic treatment.
Measurement range: 0 to 2000 ℃ or higher.
Precision: 1% (path temperature), the temperature measurement resolution at normal temperature is 0.2 ℃, and the temperature measurement resolution in the thermal state is 6 ℃.
And (3) measuring period: within 30 s.
And (3) data output: path, block, digital or analog.
Purge air pressure: 0.6 MPa.
Ambient air temperature: -30 to 60 ℃.
An acoustic unit: acoustic sounder-precision cast aluminum.
Microphone-nickel based alloy (corrosion resistant).
Precision casting and baking finish of the acoustic waveguide.
Weight: about 30 kg.
Power supply and power: AC220V, 1500W.
As an alternative embodiment, the optical thermometry device 2 comprises: the optical temperature measuring probe and the optical signal arithmetic unit are connected through an optical cable; the optical temperature measuring probe is used for measuring an optical pulse signal of flame in the combustor 3; the optical signal arithmetic unit is used for obtaining the temperature in the combustor 3 according to the optical pulse signal.
As an optional implementation, the technical indexes of the optical temperature measuring device are as follows:
monitoring points: a burner outlet.
The detection mode is as follows: and (5) carrying out spectrum analysis.
And (4) a monitoring function: flame state, pulverized coal combustion flame temperature, ignition distance, temperature field, early warning, fixed value modification and the like.
Detection time: for 1 second.
Temperature measurement: 200-1800 ℃ plus or minus 1 percent.
The combustion quality is as follows: 0 to 100%.
DCS interface: 3-way DO, 2-way AO (per watch point).
And (3) historical data storage: for 50 years.
As an optional implementation manner, the furnace temperature measurement system further includes: and the adjusting module is connected with the system analysis processing unit and is used for adjusting the coal feeding amount or the air intake amount of the combustor 3 according to the temperature distribution map so as to enable the coal feeding amount or the air intake amount to reach the optimal combustion state, and the combustion condition of the hearth can be accurately known without causing fire extinguishing accidents of the hearth during deep peak regulation. The working process of the adjusting module is as follows: according to the past data of the boiler, the temperature of normal combustion in the hearth can be known, if the temperature monitoring value is higher than the temperature value, the coal feeding amount or the air inlet amount needs to be reduced, and vice versa. The system can be adjusted either automatically or manually. The change of the adjusting mode can be switched between the local control cabinet and the DCS system.
The invention has the technical effects that:
the invention combines two temperature measuring devices, can better display the black box in the hearth in front of a user, enables the temperature field in the hearth to be more visual, more accurate and more three-dimensional, and can better improve the combustion efficiency of the boiler.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (5)
1. A furnace temperature measurement system is characterized by comprising: the system comprises a system analysis processing unit, a plurality of optical temperature measuring devices and a plurality of sound wave temperature measuring modules, wherein the optical temperature measuring devices and the sound wave temperature measuring modules are connected with the system analysis processing unit;
the optical temperature measuring devices are arranged at the outlet of a combustor of the boiler and are used for measuring the temperature in the combustor, and one optical temperature measuring device corresponds to one combustor; the sound wave temperature measurement modules are arranged on the side wall of the hearth of the boiler in a layered mode, and each sound wave temperature measurement module is used for measuring the temperature of a corresponding plane in the hearth; and the system analysis processing unit is used for drawing a temperature distribution diagram in the hearth according to the temperature in the combustor and the temperature of each plane in the hearth.
2. The furnace temperature measurement system of claim 1, wherein the sonic temperature measurement module comprises: a plurality of sonic thermometry devices.
3. The hearth temperature measurement system according to claim 2, wherein the sonic temperature measurement device comprises: an acoustic receiver and an acoustic transmitter; the sound wave transmitter is arranged on a first side wall of the hearth, and the sound wave receiver is arranged on a side wall opposite to the first side wall.
4. The furnace temperature measurement system of claim 1, wherein the optical temperature measurement device comprises: the optical temperature measuring probe and the optical signal arithmetic unit are connected through an optical cable; the optical temperature measuring probe is used for measuring an optical pulse signal of flame in the combustor; the optical signal arithmetic unit is used for obtaining the temperature in the combustor according to the optical pulse signal.
5. The hearth temperature measurement system according to claim 1, further comprising: and the adjusting module is connected with the system analysis processing unit and is used for adjusting the coal feeding amount or the air intake amount of the combustor according to the temperature distribution diagram.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111163082.8A CN113916397A (en) | 2021-09-30 | 2021-09-30 | Furnace temperature measurement system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111163082.8A CN113916397A (en) | 2021-09-30 | 2021-09-30 | Furnace temperature measurement system |
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| CN113916397A true CN113916397A (en) | 2022-01-11 |
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| CN202111163082.8A Pending CN113916397A (en) | 2021-09-30 | 2021-09-30 | Furnace temperature measurement system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN104677426A (en) * | 2015-03-18 | 2015-06-03 | 华北电力大学 | Mixed gas temperature/concentration field measuring method and device based on acousto-optic fusion |
| CN104729749A (en) * | 2013-12-18 | 2015-06-24 | 西门子能源公司 | Active temperature monitoring in gas turbine combustors |
| CN105784187A (en) * | 2016-04-15 | 2016-07-20 | 中北大学 | Boiler hearth temperature measuring method and temperature measuring device |
| CN109556753A (en) * | 2019-01-25 | 2019-04-02 | 沈阳航空航天大学 | Fire box temperature field and furnace tube leakage on-line detecting system and leakage independent positioning method based on acoustic sensor |
| 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 |
-
2021
- 2021-09-30 CN CN202111163082.8A patent/CN113916397A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104729749A (en) * | 2013-12-18 | 2015-06-24 | 西门子能源公司 | Active temperature monitoring in gas turbine combustors |
| 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 |
| CN104677426A (en) * | 2015-03-18 | 2015-06-03 | 华北电力大学 | Mixed gas temperature/concentration field measuring method and device based on acousto-optic fusion |
| CN105784187A (en) * | 2016-04-15 | 2016-07-20 | 中北大学 | Boiler hearth temperature measuring method and temperature measuring 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 |
| CN109556753A (en) * | 2019-01-25 | 2019-04-02 | 沈阳航空航天大学 | Fire box temperature field and furnace tube leakage on-line detecting system and leakage independent positioning method based on acoustic sensor |
Non-Patent Citations (1)
| Title |
|---|
| 孔德仁 等: "《兵器动态参量测试技术》", 31 January 2013, 北京理工大学出版社, pages: 149 - 150 * |
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