CN109164203A - A kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel - Google Patents
A kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel Download PDFInfo
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- CN109164203A CN109164203A CN201810819303.4A CN201810819303A CN109164203A CN 109164203 A CN109164203 A CN 109164203A CN 201810819303 A CN201810819303 A CN 201810819303A CN 109164203 A CN109164203 A CN 109164203A
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- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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Abstract
The invention discloses a kind of low-loss turbulent combustion Visualization platform devices with rotation inflow channel, it is fixedly mounted on upper flat plate including transparent windows lower end, it is connected between upper flat plate and lower plate by pillar, quartz glass is fixed between adjacent struts, the center of lower plate is provided with through-hole, cyclone is housed in through hole, gas mixing tube is connected on cyclone, the other end of gas mixing tube is connected with pipe joint, pipe joint is connect with pagoda head, pagoda head is equipped with fuel gas inlet and oxidant inlet, pipe joint is provided with rectification orifice plate, pillar is equipped with igniter, the present invention can be realized the abundant premix of fuel and air, and in the case where forming stable vortex turbulence air-flow, turbulent combustion is visually observed in realization.
Description
Technical field
The invention belongs to burner technical field more particularly to a kind of low-loss turbulent flow combustions with rotation inflow channel
Burn Visualization platform device.
Background technique
In current experimental study, especially to premixed flame Quality Research, gas is fully premixed and vortex turbulence
The problem of air-flow formation, perplexs always the progress of experiment, and the experience of related fields maturation is less at home, this is also resulted in phase
Pass field lacks forming pilot combustion channel device, and external pertinent instruments platform is with high costs, and device is larger, does not have removable
The features such as plant property, domestic requirement of experiment can not be met well.Burn the more famous PRECCINSTA burner of academia, is
It is to study gas turbine combustion unstability and to the adaptability of different fuel by German Aerospace Center and Turbomeca company
Design.To simulate the combustion position in practical gas turbine, burner includes a pressure stabilizing chamber of bottom, has 12 rotations
Turn cyclone, combustion chamber and combustion flue gas outlet each one of channel.
Due to 3D printing technique is available structure is complicated model and have many advantages, such as at low cost, precision is high, exists at present
The fields such as industrial design, machine-building, aerospace, building are widely used.Therefore, it is beaten by domestic mature 3D
Print technology and perfect mechanical manufacturing technology carry out building for Visualization platform, a kind of solution of can yet be regarded as.
Summary of the invention
The present invention is insufficient according to prior art and defect, proposes a kind of low-loss turbulent flow with rotation inflow channel
Combustion visualization table apparatus, it is therefore intended that realize the abundant premix of fuel and air, and form stable vortex turbulence gas
Stream effectively controls the premix state of gas flow and fuel-air, greatly improves mixing efficiency and reduce in combustion process
Heat loss, ensure that the accuracy of experimental data.
The technical scheme adopted by the invention is as follows:
A kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel, including under transparent windows
End is fixedly mounted on upper flat plate, is connected between upper flat plate and lower plate by pillar, is fixed with quartzy glass between adjacent struts
The center of glass, lower plate is provided with through-hole, cyclone is housed in through hole, gas mixing tube is connected on cyclone, described
The other end of gas mixing tube is connected with pipe joint, and pipe joint is connect with pagoda head, pagoda head be equipped with fuel gas inlet and
Oxidant inlet, the pipe joint are provided with rectification orifice plate, and the pillar is equipped with igniter.
Further, the pillar is equipped with 4, is fixedly mounted between upper flat plate and lower plate in rectangle, wherein a branch
Column selects stainless steel material, other pillar Ceramics materials；
Further, aperture on the stainless steel strut, for installing high-temperature resistant water cold type pressure sensor；
Further, fluting is used to seal installation quartz glass on the pillar；Between quartz glass and upper flat plate, lower plate
The space surrounded is combustion chamber；
Further, it is indoor to be located at burning for the lower surface of the upper flat plate, the upper surface of lower plate and stainless steel strut
Side is coated with heat insulating coat；
Further, the gas mixing tube increases the length of gas mixing tube by the threaded connection of end；Duct length
It is greater than 50 with pipe diameter ratio；The gas mixing tube includes the inner and outer tubes of coaxial arrangement, internal tube and inner tube
Channel between outer tube is all the runner of gas；
Further, the cyclone has 8 spiral covering of the fans evenly distributed in the circumferential direction, the spiral angle energy of covering of the fan
It is enough voluntarily to adjust；
Particle image velocimetry (PIV) device, the particle image velocimetry (PIV) are installed on the outside of observation window described further
Device connects computer.
Beneficial effects of the present invention:
To study the influence of different swirl channels and the fluctuation of premixed gas equivalent proportion to combustion state, experiment of the invention is flat
Platform devises the double-deck combustion gas mixing pipeline and cyclone test apparatus that can be freely disassembled and combine.Device zero of the present invention
Component is readily disassembled and replaces the component of different size, widely used.
The present invention can be according to the requirement of the size of experiment flow rotation intensity required for specific, to the number of blade of cyclone
Amount and spiral angle are adjusted and reach experiment effect.
By the selection of gas mixing length of tube and diameter and the cooperation of complexed metal orifice plate, cyclone, may be implemented
The abundant premix of fuel and air, and stable vortex turbulence air-flow is formed, effectively control gas flow and fuel-air is pre-
Mixed state, greatly improves mixing efficiency and reduces the heat loss in combustion process, ensure that the accuracy of experimental data.
It, can be more intuitively right in conjunction with particle image velocimetry (PIV) device using visual observation window and combustion chamber
The turbulent combustion situation of combustion chamber carries out the research of high visibility, makes up the domestic experiment porch to turbulent combustion at present and researches and develops
Blank, to turbulent closure scheme burning research have huge help.
Detailed description of the invention
Fig. 1 is a kind of section view of the low-loss turbulent combustion Visualization platform device with rotation inflow channel of the present invention
Figure；
Fig. 2 is a kind of solid of the low-loss turbulent combustion Visualization platform device with rotation inflow channel of the present invention
Figure；
Fig. 3 is a kind of the lower flat of low-loss turbulent combustion Visualization platform device with rotation inflow channel of the present invention
The top view of plate；
Fig. 4 is a kind of annular of the low-loss turbulent combustion Visualization platform device with rotation inflow channel of the present invention
Projection section；
In figure, 1, transparent windows, 2, upper flat plate, 3, heat insulating coat, 4, the fixed pillar of stainless steel, 5, the fixed pillar of ceramics
One, 6, the fixed pillar two of ceramics, 7, the fixed pillar three of ceramics, 8, quartz glass one, 9, quartz glass two, 10, quartz glass three,
11, quartz glass four, 12, cyclone, 13, lower plate, 14, gas mixing tube, 15, rectification orifice plate, 16, pipe joint, 17, treasured
Tower head, 18, fuel inlet, 19, oxidant inlet.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, the specific embodiments are only for explaining the present invention, not
For limiting the present invention.
As shown in Figure 1, 2, the present invention provides a kind of, and fuel and oxidant is fully premixed and form the rapids of rotational flow
Combustion visualization table apparatus is flowed, it is upper flat by the way that the lower end of the transparent windows 1 of rectangle to be fixedly mounted on upper flat plate 2
Plate 2, the lower surface of upper flat plate 2 are coated with heat insulating coat 3, and the fixed pillar 4 of stainless steel, ceramics are fixed pillar 1, pottery by bolt
Porcelain is fixed the fixed pillar 37 of pillar 26, ceramics and is fixed between upper flat plate 2 and lower plate 13 in rectangle, the fixed branch of stainless steel
Aperture is provided with fluting for close for placing high-temperature resistant water cold type pressure sensor and igniter on column 4 on all pillars
Envelope installation quartz glass, the fixed fluting of pillar 4 of stainless steel is for sealing installation transparency silica glass 1, quartz glass 4 11, pottery
Fluting is for sealing installation transparency silica glass 1, quartz glass 29 on the fixed pillar 1 of porcelain；On the fixed pillar 26 of ceramics
Fluting is for sealing installation transparency silica glass 29, quartz glass 3 10；Fluting is for sealing peace on the fixed pillar 37 of ceramics
Fill transparency silica glass 3 10, quartz glass 4 11；The space that quartz glass and upper flat plate 2 and lower plate 13 are surrounded is burning
Room, the fixed pillar 4 of stainless steel are located at side in combustion chamber and are coated with heat insulating coat 3, and lower 13 upper surface of plate is also coated with heat insulating coat
3, fluting is used to seal installation high temperature resistant quartz glass on the fixed pillar 4 of stainless steel and the fixed pillar of each ceramics, have compared with
Disassembly, cleaning high temperature resistant quartz glass are also convenient for while high sealing performance.
Such as Fig. 3,4, through-hole, the place that the cyclone 13 is contacted with lower plate are provided in the center of lower plate 13
Annular convex platform structure is devised, aperture is for plate 13 under connecting on annular convex platform, the place contacted with gas mixing pipeline
Devise step-like interface, and with sealing glue connection, guarantee that leakproofness, the structure have stronger universality, can with not
Isostructural cyclone Dock With Precision Position, effectively increases the portability of swirl flow combustion experiment porch, reduces experimental cost.Rotation
Stream device 12 is metal 3D printing component, and machining accuracy is high, has 8 spiral covering of the fans evenly distributed in the circumferential direction, Ke Yigen
Test the size of required flow rotation intensity factually to select suitable spiral angle.
The other end of gas mixing tube 14 is connected with pipe joint 16, and pipe joint 16 is connect with pagoda head 17, pagoda head
17 are equipped with fuel gas inlet 18 and oxidant inlet 19, and in the present embodiment, it is 1.2 meters that gas mixing pipeline 14, which selects length, pipeline
Length and pipe diameter ratio are greater than 50, this is because it is turbulence state that gas is sufficiently developed by laminar flow, in addition to needing to set gas
Body flow velocity and caliber size, it is also necessary to sufficiently long development pipeline.Orifice plate 15 is rectified to be arranged in gas mixing pipeline 14 and pipeline
The contact position of connector 16, rectification orifice plate 15 are to rectify air-flow, and developing air-flow sufficiently is turbulent flow, makes fuel and air faster
Speed premixes, and the bore dia designed in embodiment is 0.1mm.
Particle image velocimetry (PIV) device is installed on the outside of observation window, the indoor combustion case that burns can be carried out
Measurement, and the data of acquisition are transferred to progress data analysis in the computer being attached thereto.
For the claimed technical solution of the clearer explanation present invention, below in conjunction with the course of work of the invention do into
One step is explained:
Fuel and air divide from fuel gas inlet 18, oxidant inlet 19 enter in pagoda head 17 for left and right two-way respectively,
The mixing of the 17 progress first steps in pagoda head；Mixed gas passes through metal perforated plate 15, and metal perforated plate 15 carries out mixed gas whole
Stream, i.e., broken air-flow group, accelerates premixing effect, it is ensured that fuel can be premixed sufficiently with air；Gaseous mixture is in gas mixing tube
Sufficiently diffusion mixing, forms uniform pre-mixed gas in road 14；Uniform pre-mixed gas enters cyclone 12, and gas flows through eddy flow
The rotating vane of device 12, air-flow make rotating motion, into combustion chamber after due to centrifugal force act on, center formed recirculating zone, return
The high-temperature gas in downstream can be carried to upstream by stream area, for lighting the cold conditions gaseous mixture of upstream, to stablize flame, stablize fire
Flame enter in the combustion chamber being made of the fixed pillar 4 of stainless steel, the fixed pillar of ceramics and transparent high temperature resistant quartz glass with into
The corresponding laser of row and optical diagnostics experiment, burning waste gas enter in the transparent windows 1 of sealing, and transparent windows 1 are cell type
Open, thus high-temperature gas enters surrounding air, and the measurement of data is carried out by particle image velocimetry (PIV) device.
Above embodiments are merely to illustrate design philosophy and feature of the invention, and its object is to make technology in the art
Personnel can understand the content of the present invention and implement it accordingly, and protection scope of the present invention is not limited to the above embodiments.So it is all according to
It is within the scope of the present invention according to equivalent variations made by disclosed principle, mentality of designing or modification.
Claims (8)
1. a kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel, which is characterized in that including saturating
Bright observation window (1) lower end is fixedly mounted on upper flat plate (2), is connect between upper flat plate (2) and lower plate (13) by pillar, phase
Quartz glass is fixed between adjacent pillar, the center of lower plate (13) is provided with through-hole, cyclone (12) are housed in through hole,
Gas mixing tube (14) is connected on cyclone (12), and the other end of the gas mixing tube (14) is connected with pipe joint
(16), pipe joint (16) is connect with pagoda head (17), and pagoda head (17) is equipped with fuel gas inlet (18) and oxidant inlet
(19), the pipe joint (16) is provided with rectification orifice plate (15), and the pillar is equipped with igniter.
2. a kind of low-loss turbulent combustion Visualization platform dress with rotation inflow channel according to claim 1
It sets, which is characterized in that the pillar is equipped with 4, is fixedly mounted between upper flat plate (2) and lower plate (13) in rectangle, wherein
A piece pillar selects stainless steel material, other pillar Ceramics materials.
3. a kind of low-loss turbulent combustion Visualization platform dress with rotation inflow channel according to claim 2
It sets, which is characterized in that aperture on the stainless steel strut, for installing high-temperature resistant water cold type pressure sensor.
4. a kind of low-loss turbulent combustion Visualization platform with rotation inflow channel according to claim 1 or 2
Device, which is characterized in that fluting is for sealing installation quartz glass on the pillar；Quartz glass and upper flat plate (2), lower plate
(13) space surrounded between is combustion chamber.
5. a kind of low-loss turbulent combustion Visualization platform dress with rotation inflow channel according to claim 1
It sets, which is characterized in that the lower surface of the upper flat plate (2), the upper surface of lower plate (13) and stainless steel strut are located at burning
Indoor side is coated with heat insulating coat.
6. a kind of low-loss turbulent combustion Visualization platform dress with rotation inflow channel according to claim 1
It sets, which is characterized in that the gas mixing tube (14) is connected through a screw thread the length for increasing gas mixing tube (14)；Select gas
The length and pipe diameter ratio of mixing tube (14) are greater than 50.
7. a kind of low-loss turbulent combustion Visualization platform dress with rotation inflow channel according to claim 1
It sets, which is characterized in that the cyclone (12) has 8 spiral covering of the fans evenly distributed in the circumferential direction, and spiral angle can be certainly
Row is adjusted.
8. a kind of low-loss turbulent combustion Visualization platform dress with rotation inflow channel according to claim 1
It sets, which is characterized in that particle image velocimetry device is installed on the outside of the transparent windows (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819303.4A CN109164203A (en) | 2018-07-24 | 2018-07-24 | A kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel |
| PCT/CN2018/115812 WO2020019586A1 (en) | 2018-07-24 | 2018-11-16 | Visual test bed device with rotary inflow channel for turbulent combustion with low heat loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810819303.4A CN109164203A (en) | 2018-07-24 | 2018-07-24 | A kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel |
Publications (1)
| Publication Number | Publication Date |
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| CN109164203A true CN109164203A (en) | 2019-01-08 |
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|---|---|---|---|
| CN201810819303.4A Pending CN109164203A (en) | 2018-07-24 | 2018-07-24 | A kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel |
Country Status (2)
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| WO (1) | WO2020019586A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110274749A (en) * | 2019-07-19 | 2019-09-24 | 太原理工大学 | Cyclone interior flow field measurement method and system based on 2 dimension PIV |
| CN110296435A (en) * | 2019-05-28 | 2019-10-01 | 江苏大学 | A kind of multi-functional adjustable combustion with reduced pollutants visualization device |
| CN111272947A (en) * | 2020-03-20 | 2020-06-12 | 蓝色火焰能源科技(镇江)有限公司 | Visual combustion test device with sound excitation system |
| CN111443158A (en) * | 2020-04-02 | 2020-07-24 | 中国人民解放军国防科技大学 | Metal powder ignition combustion test device in high-temperature gas |
| CN111829787A (en) * | 2020-06-23 | 2020-10-27 | 江苏大学 | Visual combustion experiment platform capable of realizing multiple mixing |
| CN113847597A (en) * | 2021-09-14 | 2021-12-28 | 中国空气动力研究与发展中心空天技术研究所 | Gas fuel premixing rotational flow particle generating device |
| CN113960242A (en) * | 2021-09-17 | 2022-01-21 | 江苏大学 | Staged combustor with two radial rotating inflow channels |
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|---|---|
| WO2020019586A1 (en) | 2020-01-30 |
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Application publication date: 20190108 |