CN105651747A - Measuring device for capturing fluorescence intensity of free radical of flame at fixed point - Google Patents
Measuring device for capturing fluorescence intensity of free radical of flame at fixed point Download PDFInfo
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- CN105651747A CN105651747A CN201610007913.5A CN201610007913A CN105651747A CN 105651747 A CN105651747 A CN 105651747A CN 201610007913 A CN201610007913 A CN 201610007913A CN 105651747 A CN105651747 A CN 105651747A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6417—Spectrofluorimetric devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N2021/6463—Optics
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N21/645—Specially adapted constructive features of fluorimeters
- G01N2021/6484—Optical fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
- G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
- G01N21/64—Fluorescence; Phosphorescence
- G01N2021/6491—Measuring fluorescence and transmission; Correcting inner filter effect
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention relates to burning diagnostic equipment and especially relates to a measuring device for capturing fluorescence intensity of free radical of flame at a fixed point. The measuring device for capturing fluorescence intensity of free radical of flame at the fixed point disclosed by the invention comprises a light collecting unit, a light transmission unit and a light sensing unit, wherein the light collecting unit comprises a cassegrain lens; the light transmission unit comprises an optical fiber, a collimating lens and an optical filter; the light sensing unit comprises a black box, a photomultiplier and a data acquisition unit; the cassegrain lens is used for collecting the flame light at the fixed point; the optical fiber is used for transmitting light; the collimating lens is used for converting the divergent beams emitted from the optical fiber into parallel beams; the bayonets of the optical filter and the collimating lens are arranged on a side wall of the black box; the optical filter is located between the collimating lens and the photomultiplier; the photomultiplier is located in the black box; an output signal of the photomultiplier is outputted through a pin line and is connected with the data acquisition unit; and the data acquisition unit is used for displaying and processing an outputted electric signal. The measuring device provided by the invention has the greatest characteristic of acquiring the light intensity information of the free radical of flame at the fixed point.
Description
Technical field
The present invention relates to combustion diagnosis equipment, especially a kind of for pinpointing the measurement apparatus catching flame radical fluorescence intensity.
Background technology
Fuel combustion is phenomenon common in power-equipment, combustion position carries out deep research and contributes to grasping combustion characteristics, thus improving combustion technology, improving efficiency of combustion, reducing the discharge of pollutant. The flame parameters information such as flame temperature, flame reaction region, free radical radical concentration, rate of heat release can be reflected to a certain extent, so the research for flame radical fluorescence intensity is significant due to flame radical fluorescence intensity. Flame radical fluorescence intensity carries out further investigation needs good measurement means as instrument, therefore, flame radical fluorescence intensity acquisition methods is explored and will assist in the understanding promoted flame structure, combustion characteristics.
At present both at home and abroad about the measuring method of flame radical fluorescence intensity, it is concentrated mainly on equipment such as utilizing planar laser-induced fluorescence (PLIF), ICCD camera, obtain the Two dimensional Distribution picture of flame radical fluorescence intensity, and the measuring method for " fixed point " acquisition flame radical fluorescence intensity is still had vacant position. Current domestic minimum collecting the optical signalling that diameter is the CH group in 3mm spheroid, 3mm spheroid is not sufficiently small in some cases.
Summary of the invention
There is, in order to solve prior art, the problem that " the tested region " that collect is little not, the invention provides a kind of sampling precision high, for pinpointing the measurement apparatus catching flame radical fluorescence intensity.
The measurement apparatus of a kind of flame radical fluorescence intensity in the present invention, including light collecting unit, light transmission unit and photosensitive unit. It is characterized in that, light collecting unit is made up of Cassegrain's camera lens; Light transmission unit includes optical fiber, collimating mirror and optical filter;Photosensitive unit includes black box, photomultiplier tube and data acquisition unit. Cassegrain's camera lens is used for pinpointing collection flame light, and rear end is provided with optical fiber joint end mouth; The incidence end of optical fiber is connected with optical fiber joint end mouth, for transmission ray; The exit end of optical fiber is connected with collimating mirror, and collimating mirror makes divergent beams be calibrated to collimated light beam; The bayonet socket of optical filter and collimating mirror is arranged on a side wall surface of black box, and optical filter is for filtering the light of different-waveband; Photomultiplier tube is positioned at black box, is used for converting optical signals into the signal of telecommunication; Optical filter is between collimating mirror and photomultiplier tube; The sensing form of photomultiplier tube is towards optical filter side, with optical filter place plane parallel; Photomultiplier tube is positioned at the outside of black box for connecting the pin exporting signal; Respective lines in pin is connected with data acquisition unit, the data acquisition unit signal of telecommunication for showing with process photomultiplier tube output. Described measurement apparatus, adjustable point catches the fluorescence intensity of flame radical, detectable wavelength band free radical in ultraviolet to visible region; The tested region of flame is diameter 0.1mm, the cylindrical region of high 0.8mm ~ 1.58mm; The operating distance of measurement apparatus is limited distance, and scope is between 295mm ~ 306mm.
As preferably, Cassegrain's camera lens of described light collecting unit includes primary mirror, secondary mirror and lens barrel, for pinpointing the light gathering the tested region of flame; Described primary mirror is for reflecting incident beam, and the center of primary mirror has through hole, reflecting surface is concave surface; The light beam that primary mirror is reflected by described secondary mirror carries out secondary reflection, and the light beam after reflection passes from through hole; The reflecting surface of secondary mirror is convex surface, described lens barrel is used for fixing primary mirror and secondary mirror, and it is coaxial that lens barrel front end is provided with for controlling the diaphragm of light-inletting quantity, rear end is provided with optical fiber joint end mouth, primary mirror and secondary mirror, secondary mirror is between primary mirror and tested flame, and the concave surface of primary mirror is relative with the convex surface of secondary mirror.
As preferably, described Cassegrain's camera lens primary mirror radius of curvature is r, and through-hole diameter is too small easily to shut out the light, the excessive veiling glare that is easily introduced, and through-hole diameter of the present invention is 0.12r ~ 0.14r; Secondary curvature radius is the distance of 0.5r ~ 0.6r, primary mirror and secondary mirror is 0.45r ~ 0.55r, and the logical light diameter of diaphragm is 0.25r ~ 0.3r. The radius of curvature r of described primary mirror is 300mm ~ 305mm. Described Cassegrain mirror tail end is provided with adjustment parts, it may be achieved front and back, up and down, the fine setting of left and right six direction, wherein up and down, the range of accommodation of left and right is in �� 1mm. Described Cassegrain's camera lens no color differnece, can survey the free radical of different-waveband, and spherical aberration, coma are little, and picture point diameter is only 356 ��m.
As preferably, the angle of divergence of described optical fiber have to be larger than the angle focusing on light beam, and core diameter have to be larger than picture point diameter. For ensureing that the light beam that Cassegrain's camera lens focuses on can be properly received by the optical fiber of described measurement apparatus, in the present invention, picture point diameter is 356 ��m, and fibre core diameter is 960 ��m. The choosing of described optical fiber take into account the wavelength band of different free radicals, and it can transmit the light within the scope of 200nm ~ 1200nm, has the good suitability.
As preferably, the collimating mirror of described measurement apparatus is for calibrating the divergent beams gone out from fiber exit end-fire so that it is be changed into the directional light of a beam diameter 4mm ~ 6mm. The numerical aperture of described collimating mirror need to match with the numerical aperture of described optical fiber, and both are 0.22 at numerical aperture.After collimating mirror, the collimated light beam diameter of injection is necessarily less than photomultiplier tube to sense the size of form, and photomultiplier tube sensing window dimension is 24mm �� 8mm. Additionally, described collimating mirror can pass through the light within the scope of 200nm ~ 2000nm.
As preferably, the optical filter of described measurement apparatus, for filtering the light that flame sends, the light after being filtered by optical filter is the light of flame free radical. By changing the optical filter of different-waveband, the fluorescence intensity of different free radical can be surveyed. The optical filter wavelength band that optical filter wavelength band is 315nm �� 7.5nm, CH base of the OH base used in the present invention is 427nm �� 5nm.
As preferably, the black box of described measurement apparatus, it is used for installing photomultiplier tube, eliminates the interference of background light in use procedure. The design of black box take into account the leakage problem of black box wall junction, and each wall has been carried out boss design. Black box one side wall surface, is provided with an adaptor, is used for fixing described collimating mirror and described optical filter. Optical filter is placed between adaptor and black box wall, and adaptor is screwed by screw thread thereon and black box wall and is fixed optical filter simultaneously. Being provided with the screw thread mated with collimating mirror in the middle of adaptor, collimating mirror and adaptor are fixed by threaded engagement.
As preferably, the photomultiplier tube of described measurement apparatus, sensing form thereon is used for the light beam after receiving filtered optical filtering, and sensing window dimension is 24mm �� 8mm. Incident ray is irradiated on sensing form, and through the photocathode within photomultiplier tube, dynode system, optical signalling is converted to the signal of telecommunication, and exports from the anode of photomultiplier tube in the form of electric current. The output current circuit of photomultiplier tube is encapsulated in the pin of photomultiplier tube.
Beneficial effects of the present invention: the flame radical fluorescence intensity measurement device of the present invention has the following characteristics that 1, Cassegrain's camera lens can realize gathering diameter is 0.1mm, height is the flame light in 0.8mm ~ 1.58mm cylindrical region, substantially reduce the volume in tested region, reduce the restriction to flame size of the tested area size; 2, Cassegrain mirror head-tail optical fiber junction, it may be achieved left and right, front and back, upper and lower six orientation adjustment, it is ensured that optical fiber can be successfully received light beam; 3, the flame radical fluorescence intensity measurement device of Cassegrain's camera lens is adopted, " fixed point " that can realize flame region free radical fluorescence intensity is measured, widen the method for testing of flame radical fluorescence intensity further, help lend some impetus to the research to flame characteristics; 4, by changing the optical filter of different-waveband in measurement apparatus, it may be achieved the research to flame difference free radical group, the motility that measurement apparatus uses is strengthened.
Accompanying drawing explanation
Fig. 1 is Cassegrain's lens construction schematic diagram.
Fig. 2 is black box structural representation.
Fig. 3 is the measurement apparatus structural representation of a kind of flame radical fluorescence intensity.
Labelling in figure: 1, tested flame, 2, diaphragm, 3, Cassegrain's camera lens, 4, optical fiber, 5, collimating mirror, 6, optical filter, 7, black box, 8, pin, 9, sensing form, 10, photomultiplier tube, 11, adaptor, 12, data acquisition unit, 13, regulate screw, 14, secondary mirror, 15, circumferential rib, 16, primary mirror, 17, lens barrel, 18, parts are regulated, 19, optical fiber joint end mouth, 20 and collimating mirror matching thread.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail, but this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to above-described embodiment.
As it is shown in figure 1, a kind of Cassegrain's camera lens 3 is made up of primary mirror 16, secondary mirror 14 and lens barrel 17. Primary mirror 16 is the concave spherical mirror of r for radius of curvature, and primary mirror center has through hole, and the scope control of r is between 300mm ~ 305mm. Secondary mirror 14 is convex spherical reflecting mirror that radius of curvature is 0.5r ~ 0.6r. Primary mirror 16 and secondary mirror 14 are coaxial, and the concave spherical surface of primary mirror 16 is relative with the convex spherical of secondary mirror 14. Two mirror distances are 0.45r ~ 0.55r, the securing member of fixing secondary mirror 14 have one to regulate screw 13, by the distance between the fine-tuning primary mirror 16 of turning adjusting screw 13 and secondary mirror 14. Diaphragm 2 is positioned at the front end of lens barrel 17, distance secondary mirror 14 reflecting surface center 0.106r, is used for controlling light-inletting quantity. The afterbody of lens barrel 17, has adjustment parts 18 and optical fiber joint end mouth 19. Regulate parts 18 and can realize the adjustment in left and right, front and back, upper and lower six orientation so that the optical fiber 4 being connected to optical fiber joint end mouth 19 place can be successfully received the light beam converged at herein. Lens imaging point distance primary mirror 16 reflecting surface central point 1.233r. The inwall of lens barrel 17 is provided with a number of circumferential rib 15, for reducing the interference of inwall reflection light, improves the image quality of optical system. Intercostal distance is d, rib height 0.8d, rib thickness 0.2d. Rib spacing d controls between 8mm ~ 13mm.
As it is shown on figure 3, the measurement apparatus of a kind of flame radical fluorescence intensity, including tested flame 1, Cassegrain's camera lens 3, optical fiber 4, collimating mirror 5, optical filter 6, black box 7, photomultiplier tube 10 and data acquisition unit 12. In the measurement apparatus of described flame radical fluorescence intensity, employ above-mentioned Cassegrain's camera lens 3. Cassegrain's camera lens 3 front end arranges diaphragm 2, is used for controlling light-inletting quantity. The incidence end of optical fiber 4 is connected with the optical fiber joint end mouth 19 of Cassegrain's camera lens 3 afterbody. The exit end of optical fiber 4 is connected with collimating mirror 5. The bayonet socket of optical filter 6 and collimating mirror 5 is arranged on a side wall surface of black box 7, and optical filter 6 is fixed by adaptor 11, and collimating mirror 5 passes through screw thread 20 and screws and be connected with adaptor 11, as shown in Figure 2. Photomultiplier tube 10 is positioned at black box 7, for eliminating the interference of background light. Optical filter 6 is between collimating mirror 5 and photomultiplier tube 10. The sensing form 9 of photomultiplier tube 10 is towards optical filter 6 side, with optical filter 6 place plane parallel. Photomultiplier tube 10 is positioned at for connecting the pin 8 exporting signal the outside of black box 7, facilitates the connection of circuit. Respective lines in pin 8 is connected with data acquisition unit 12, the data acquisition unit 12 signal of telecommunication for showing with process photomultiplier tube 10 output.
The light that flame 1 sends is injected from diaphragm 2, enters Cassegrain's camera lens 3. Light first reflects through primary mirror 16, arrives secondary mirror 14, and light beam is focused on and passes the through hole of primary mirror 16 center by secondary mirror 14 again, is imaged on afterbody optical fiber joint end mouth 19 place of Cassegrain's camera lens 3. The through-hole diameter of primary mirror 16 requires more than focusing on the light beam diameter at this plane place. Focus on the angle requirement angle of divergence less than optical fiber 4 of light beam, and picture point diametric requirements is less than optical fiber 4 core diameter, to guarantee that the light utilizing Cassegrain's camera lens 3 to gather can fully enter optical fiber 4, make light from the trailer transmission of Cassegrain's camera lens 3 to the exit end of optical fiber 4 through optical fiber 4. Can by the angular dispersed of its angle of divergence from the light beam of optical fiber 4 injection, it has not been convenient to the sensing form 9 of photomultiplier tube 10 receives. Collimating mirror 5 is connected to the exit end of optical fiber 4, and the divergent beams penetrated from optical fiber 4 can be converted to diameter collimated light beam within 4mm ~ 6mm by collimating mirror 5, and wherein the numerical aperture of optical fiber 4 matches with the numerical aperture of collimating mirror 5, is 0.22.Black box 7 wall is provided with an adaptor 11. Collimating mirror 5 and adaptor 11 is screwed by screw thread 20 and is connected, and optical filter 6, between adaptor 11 and black box 7 wall, is fixed by adaptor 11. From collimating mirror 5, the collimated light beam of injection is through optical filter 6, and filtered 6 is filtered. Wave band according to optical filter 6 self, is the light of a certain free radical of flame 1 from the light of optical filter 6 injection. The collimated light beam of filtered 6 injection is radiated on the sensing form 9 of photomultiplier tube 10. The light intensity signal received is converted to the signal of telecommunication a certain circuit output in pin 8 by photomultiplier tube 10, and the circuit passing through to connect is by this signal of telecommunication transmission to data acquisition unit 12. Data acquisition unit 12 is for processing and the signal of telecommunication showing that photomultiplier tube 10 exports.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (7)
1. for pinpointing the measurement apparatus catching flame radical fluorescence intensity, including light collecting unit, light transmission unit and photosensitive unit; It is characterized in that, described light collecting unit is made up of Cassegrain's camera lens; Light transmission unit includes optical fiber, collimating mirror and optical filter; Photosensitive unit includes black box, photomultiplier tube and data acquisition unit; Cassegrain's camera lens rear end is provided with optical fiber joint end mouth; The incidence end of optical fiber is connected with optical fiber joint end mouth, and the exit end of optical fiber is connected with collimating mirror; The bayonet socket of optical filter and collimating mirror is arranged on a side wall surface of black box; Photomultiplier tube is positioned at black box, for eliminating the interference of background light; Optical filter is between collimating mirror and photomultiplier tube; The sensing form of photomultiplier tube is towards optical filter side, with optical filter place plane parallel; Photomultiplier tube is positioned at for connecting the pin exporting signal the outside of black box, facilitates the connection of circuit; Respective lines in pin is connected with data acquisition unit, the data acquisition unit signal of telecommunication for showing with process photomultiplier tube output.
2. according to claim 1 a kind of for pinpointing the measurement apparatus catching flame radical fluorescence intensity, it is characterised in that described Cassegrain's camera lens includes primary mirror, secondary mirror and lens barrel, it is characterised in that the center of primary mirror has through hole, reflecting surface is concave surface; The reflecting surface of secondary mirror is convex surface; It is coaxial that lens barrel is used for fixing primary mirror and secondary mirror, primary mirror and secondary mirror, and secondary mirror is between primary mirror and tested flame, and the concave surface of primary mirror is relative with the convex surface of secondary mirror; The securing member of fixing secondary mirror is provided with adjustment screw, by the distance between the fine-tuning primary mirror of turning adjusting screw and secondary mirror; Primary mirror radius of curvature is r, and through-hole diameter is 0.12r ~ 0.14r, and secondary curvature radius is the distance of 0.5r ~ 0.6r, primary mirror and secondary mirror is 0.45r ~ 0.55r, and the logical light diameter of diaphragm is 0.25r ~ 0.3r; The radius of curvature r of described primary mirror is 300mm ~ 305mm.
3. Cassegrain's camera lens according to claim 2, it is characterised in that before and after described Cassegrain mirror tail end can realize, up and down, the fine setting of left and right six direction, wherein up and down, the range of accommodation of left and right is in �� 1mm.
4. Cassegrain's camera lens according to claim 2, it is characterised in that the lens barrel inwall of described Cassegrain's camera lens is provided with the circumferential rib reflective for reducing lens barrel inwall, each internal-rib is arranged mutually parallel and vertical with the axis of lens barrel;Intercostal distance is d, rib height 0.8d, rib thickness 0.2d; Rib spacing d controls between 8mm ~ 13mm.
5. according to claim 1 a kind of for pinpointing the measurement apparatus catching flame radical fluorescence intensity, it is characterized in that, described light transmission unit, including optical fiber, collimating mirror and optical filter, it is characterised in that the described optical fiber angle of divergence is more than the angle focusing on light beam, numerical aperture is 0.22, core diameter is more than picture point diameter, and core diameter is 960 ��m, and fiber optic transmission wavelengths scope is at 200nm ~ 1200nm; The numerical aperture of the numerical aperture of described collimating mirror and described optical fiber matches, and collimating mirror numerical aperture is 0.22, and operating wavelength range is 200nm ~ 2000nm; Described optical filter is according to being surveyed selected by free group, and in the present invention, OH group chooses the optical filter of wave band 315nm �� 7.5nm, and CH group chooses the optical filter of wave band 427nm �� 5nm.
6. according to claim 1 a kind of for pinpointing the measurement apparatus catching flame radical fluorescence intensity, it is characterized in that, described photosensitive unit, including black box, photomultiplier tube and data acquisition unit, it is characterized in that, for eliminating the background light interference to photomultiplier tube, spy arranges black box, is placed in black box by photomultiplier tube; Light leak during for avoiding black box difference wall to be connected, described black box inwall carries out boss design; Optical filter and collimating mirror are arranged on black box one side wall surface; Black box wall is furnished with an adaptor, and adaptor is fixed by the mode of screw thread and black box wall.
7. adaptor according to claim 6, it is characterised in that adaptor is provided with the screw thread mated with collimating mirror, adaptor and collimating mirror and is fixed by threaded engagement; Optical filter is placed between black box wall and adaptor, is rotatably compressed fixing by adaptor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610007913.5A CN105651747B (en) | 2016-01-07 | 2016-01-07 | It is a kind of for pinpoint capture flame radical fluorescence intensity measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610007913.5A CN105651747B (en) | 2016-01-07 | 2016-01-07 | It is a kind of for pinpoint capture flame radical fluorescence intensity measuring device |
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| CN105651747A true CN105651747A (en) | 2016-06-08 |
| CN105651747B CN105651747B (en) | 2019-02-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969267A (en) * | 2017-04-15 | 2017-07-21 | 广东蓝新氢能源科技有限公司 | A kind of efficient fire device |
| CN114323666A (en) * | 2021-12-31 | 2022-04-12 | 南京航空航天大学 | Ultraviolet light conduction device for detecting heat release rate of combustion chamber of aircraft engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969267A (en) * | 2017-04-15 | 2017-07-21 | 广东蓝新氢能源科技有限公司 | A kind of efficient fire device |
| CN114323666A (en) * | 2021-12-31 | 2022-04-12 | 南京航空航天大学 | Ultraviolet light conduction device for detecting heat release rate of combustion chamber of aircraft engine |
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| Publication number | Publication date |
|---|---|
| CN105651747B (en) | 2019-02-01 |
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