JPH0436641A - Measuring method for combustion gas - Google Patents
Measuring method for combustion gasInfo
- Publication number
- JPH0436641A JPH0436641A JP14132590A JP14132590A JPH0436641A JP H0436641 A JPH0436641 A JP H0436641A JP 14132590 A JP14132590 A JP 14132590A JP 14132590 A JP14132590 A JP 14132590A JP H0436641 A JPH0436641 A JP H0436641A
- Authority
- JP
- Japan
- Prior art keywords
- optical fiber
- light
- laser beam
- mirror
- combustion gas
- 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.)
- Pending
Links
- 239000000567 combustion gas Substances 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 8
- 239000013307 optical fiber Substances 0.000 claims abstract description 18
- 238000004611 spectroscopical analysis Methods 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000004458 analytical method Methods 0.000 abstract description 4
- 238000000295 emission spectrum Methods 0.000 abstract description 3
- 230000001678 irradiating effect Effects 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 abstract description 2
- 238000001228 spectrum Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract 1
- 238000010183 spectrum analysis Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- 230000005283 ground state Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、外部で容易に測定することができない部位に
おける燃焼ガスの測定方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for measuring combustion gases in locations that cannot be easily measured externally.
〈従来の技術〉
エンジンの燃焼室内の燃焼ガスによって燃焼状態を測定
する方法として、光ファイバーを燃焼室内に挿入し、高
温の火炎の光を分光器に取り入れ、分光器にて波長を分
析してＮ０５０■等の燃焼ガスを測定している。<Prior art> As a method of measuring the combustion state using the combustion gas in the combustion chamber of an engine, an optical fiber is inserted into the combustion chamber, the high-temperature flame light is introduced into a spectrometer, and the wavelength is analyzed by the spectrometer to determine N050. ■We are measuring combustion gases such as:
〈発明が解決しようとする課題〉
上記従来の測定方法では、微量の光検出かできず、高精
度の燃焼ガスの測定に難点があった。<Problems to be Solved by the Invention> The conventional measurement methods described above are only able to detect a small amount of light, making it difficult to measure combustion gas with high precision.
本発明の目的は、上記従来の測定方法を活用し、高精度
の燃焼ガスの測定を可能とすることである。An object of the present invention is to utilize the conventional measuring method described above to enable highly accurate measurement of combustion gas.
く課題を解決するための手段〉
上記の目的を達成するための本発明による燃焼ガスの測
定方法は、レーザ発振器から発振したレーザ光をハーフ
ミラ−を通して光ファイバーにより高温の火炎に照射し
、これによって励起されて自発光する光を前記光ファイ
バーと前記ハーフミラ−を介して分光器に入射させて分
光分析処理するものである。Means for Solving the Problems> In order to achieve the above object, the method for measuring combustion gas according to the present invention irradiates a high-temperature flame with a laser beam oscillated from a laser oscillator through an optical fiber through a half mirror, thereby exciting the flame. The self-emitted light is incident on a spectrometer via the optical fiber and the half mirror, and is subjected to spectroscopic analysis.
く作 用〉
上記本発明によると、ハーフミラ−を通して光ファイバ
ーによりレーザ光を高温の火炎に照射してエネルギーを
付与することにより、光子励起を行い、この励起状態か
ら基底状態に変るときに自発光する。この光を前記光フ
ァイバーと前記ハーフミラ−を介して分光器に取り入れ
ることにより強い発光スペクトルが得られ、燃焼生成ガ
スの分析測定を容易、かつ高精度に行うことを可能とす
るものである。Effects> According to the present invention, photons are excited by applying energy to a high-temperature flame by irradiating a laser beam through an optical fiber through a half mirror, and when the excited state changes to the ground state, it emits light by itself. . By introducing this light into a spectrometer via the optical fiber and the half mirror, a strong emission spectrum can be obtained, making it possible to easily and accurately analyze and measure combustion generated gas.
〈実施例〉
以下本発明の実施例を図面に基づいて説明する。第１図
において、１はエンジン、２は前記エンジン１の燃焼室
１ａ（第２図参照）内の計測窓である。<Example> Hereinafter, an example of the present invention will be described based on the drawings. In FIG. 1, 1 is an engine, and 2 is a measurement window in the combustion chamber 1a of the engine 1 (see FIG. 2).
３は分光器であり、前記計測窓２より燃焼室１ａ内に挿
入された光ファイバー６とこの光ファイバー６によって
導かれる光を前記分光器３に入射させるためのハーフミ
ラ−５とを備えている。Reference numeral 3 denotes a spectrometer, which includes an optical fiber 6 inserted into the combustion chamber 1a through the measurement window 2, and a half mirror 5 for allowing the light guided by the optical fiber 6 to enter the spectrometer 3.
４はレーザ発振器である。このレーザ発振器４から発振
されるレーザ光７は前記ハーフミラ−５を通過して光フ
ァイバー６によって燃焼室１ａ内に入射される。4 is a laser oscillator. Laser light 7 oscillated from this laser oscillator 4 passes through the half mirror 5 and enters into the combustion chamber 1a via an optical fiber 6.
９は前記分光器３に接続されたストリークカメラ本体、
１０はクルードＣＣＤカメラ、１１はテンポラリアナラ
イザである。9 is a streak camera body connected to the spectrometer 3;
10 is a crude CCD camera, and 11 is a temporary analyzer.
１２は前記ストリークカメラ本体９並びにクルードＣＣ
Ｄカメラ１０の電源、１３はクルードＣＣＤカメラ１０
の冷却装置である。12 is the streak camera body 9 and the crew CC
Power supply for D camera 10, 13 is crude CCD camera 10
This is a cooling device.
第２図において、１ａは燃焼室、１５は前記燃焼室１ａ
内ノ燃焼火炎を示し、１４は前記燃焼室１ａ内に挿入さ
れた光ファイバー６の先端を覆っている透明のガラス管
である。In FIG. 2, 1a is a combustion chamber, and 15 is the combustion chamber 1a.
An internal combustion flame is shown, and 14 is a transparent glass tube covering the tip of the optical fiber 6 inserted into the combustion chamber 1a.
上記の構成において、レーザ発振器４から発振されたレ
ーザ光７はハーフミラ−５を通過して光ファイバー６に
より燃焼室１ａ内に導かれ高温の火炎１５に照射する。In the above configuration, the laser beam 7 oscillated from the laser oscillator 4 passes through the half mirror 5, is guided into the combustion chamber 1a by the optical fiber 6, and irradiates the high temperature flame 15.
レーザ光７か照射された火炎１５はレーザ光７によるエ
ネルギーの付与によって光子励起し、第３図のＡ曲線で
示すように励起状態となり、この励起状！ｇＡから第３
図の８曲線で示す基底状態に変るときに自発光する。こ
の自発光した光８を光ファイバー６により掃引させハー
フミラ−５によって分光器３に入射して光分析し、発光
スペクトルに基づいて燃焼ガス成分を解析処理するもの
である。The flame 15 irradiated with the laser beam 7 is photon-excited by the energy imparted by the laser beam 7, and enters an excited state as shown by curve A in FIG. 3rd from gA
It emits light when it changes to the ground state shown by curve 8 in the figure. This self-emitted light 8 is swept by an optical fiber 6 and incident on a spectrometer 3 by a half mirror 5 for optical analysis, and combustion gas components are analyzed based on the emission spectrum.
尚、上記の実施例はエンジンの燃焼ガスの測定について
説明したが、本発明方法は廃棄物焼却炉や溶鉱炉等の燃
焼カスの測定にも適用することかできる。Although the above-mentioned embodiment describes the measurement of engine combustion gas, the method of the present invention can also be applied to the measurement of combustion scum from waste incinerators, blast furnaces, and the like.
〈発明の効果〉
以上のように本発明によると、レーザ光をハーフミラ−
を通して光ファイバーにより燃焼室の高温火炎に照射し
、これによる励起光を光ファイバーと前記ハーフミラ−
を介して分光器に入射して分光分析し、燃焼ガス成分の
解析を行うようにしたものであるから、分光器では強い
光スペクトルが得られ、微量の火炎光であっても、これ
を高精度に分析し、燃焼ガス成分を効率よく測定するこ
とができる。<Effects of the Invention> As described above, according to the present invention, laser light is
irradiate the high-temperature flame in the combustion chamber with an optical fiber through the
The spectrometer enters the spectrometer through the flame light and performs spectroscopic analysis to analyze the combustion gas components, so the spectrometer can obtain a strong light spectrum, and even a small amount of flame light can be highly enhanced. It enables accurate analysis and efficient measurement of combustion gas components.
図面は本発明方法の一実施例を示し、第１図は測定装置
の平面図、第２図は燃焼室の断面図、第３図はレーザ光
照射による励起発光の特性図である。
１・・・エンジン、１ａ・・・燃焼室、２・・・計測窓
、３・・・分光器、４・・・レーザ発振器、５・・・ハ
ーフミラ−６・・・光ファイバー、７・・・レーザ光、
８・・・光。The drawings show an embodiment of the method of the present invention; FIG. 1 is a plan view of a measuring device, FIG. 2 is a sectional view of a combustion chamber, and FIG. 3 is a characteristic diagram of excited light emission by laser beam irradiation. DESCRIPTION OF SYMBOLS 1... Engine, 1a... Combustion chamber, 2... Measurement window, 3... Spectrometer, 4... Laser oscillator, 5... Half mirror 6... Optical fiber, 7... laser light,
8...Light.
Claims (1)
して光ファイバーにより高温の火炎に照射し、これによ
つて励起されて自発光する光を前記光ファイバーと前記
ハーフミラーを介して分光器に入射させて分光分析処理
することを特徴とする燃焼ガスの測定方法。A laser beam oscillated from a laser oscillator passes through a half mirror and irradiates a high-temperature flame with an optical fiber, and the light that is excited by this and emits light is incident on a spectrometer via the optical fiber and the half mirror for spectroscopic analysis processing. A method for measuring combustion gas characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14132590A JPH0436641A (en) | 1990-06-01 | 1990-06-01 | Measuring method for combustion gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14132590A JPH0436641A (en) | 1990-06-01 | 1990-06-01 | Measuring method for combustion gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0436641A true JPH0436641A (en) | 1992-02-06 |
Family
ID=15289307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14132590A Pending JPH0436641A (en) | 1990-06-01 | 1990-06-01 | Measuring method for combustion gas |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0436641A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002524732A (en) * | 1998-09-04 | 2002-08-06 | ジェネレーション・テクノロジー・リサーチ・ピーティーワイ・リミテッド | Laser-induced ionization spectrometer suitable for coal. |
-
1990
- 1990-06-01 JP JP14132590A patent/JPH0436641A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002524732A (en) * | 1998-09-04 | 2002-08-06 | ジェネレーション・テクノロジー・リサーチ・ピーティーワイ・リミテッド | Laser-induced ionization spectrometer suitable for coal. |
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