CN106090921B - A kind of burner that can be used for multi fuel blending combustion phenomena research with dual rotary inflow channel - Google Patents
A kind of burner that can be used for multi fuel blending combustion phenomena research with dual rotary inflow channel Download PDFInfo
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- 239000000446 fuel Substances 0.000 title claims abstract description 54
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 35
- 238000002156 mixing Methods 0.000 title claims abstract description 21
- 238000011160 research Methods 0.000 title claims abstract description 16
- 230000009977 dual effect Effects 0.000 title claims 7
- 239000002184 metal Substances 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 28
- 239000003292 glue Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000010146 3D printing Methods 0.000 claims description 5
- 238000012800 visualization Methods 0.000 claims 2
- 241000883990 Flabellum Species 0.000 claims 1
- 238000002474 experimental method Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012545 processing Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 abstract 4
- 238000013461 design Methods 0.000 abstract 2
- 239000002356 single layer Substances 0.000 abstract 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 10
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N dimethylmethane Natural products CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D17/00—Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
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Abstract
本发明公开了一种带有双旋转入流通道可用于多燃料掺混燃烧现象研究的燃烧器，包括可视化方形燃烧室、燃料充分预混及旋转流动发生装置及燃料空气流入掺混装置；整个装置采用垂直布置方式，工作时，空气和燃料通过进气管进入该装置，在管路中进行预混，管内嵌入的金属孔板可以促进燃料与空气的充分预混，随后预混合气通过双层旋流器形成稳定的旋转气流，最终进入方形燃烧室并点火形成稳定的燃烧火焰。该装置采用双层结构设计，内外层结构十分相似，可根据实际需求设计单层或双层火焰实验，可以同时进行两种不同燃料的掺混燃烧实验，并能与其他测量与检测仪器很好地配合使用；装置能达到极佳的预混和旋流效果，设计新颖、便于加工、工作可靠。
The invention discloses a burner with double rotating inflow passages, which can be used for the research of multi-fuel mixed combustion phenomena, including a visualized square combustion chamber, a fuel sufficient premixing and rotating flow generating device, and a fuel air inflow mixing device; the whole device The vertical arrangement is adopted. When working, air and fuel enter the device through the intake pipe, and are premixed in the pipeline. The metal orifice embedded in the pipe can promote the full premixing of fuel and air, and then the premixed gas passes through the double-layer cyclone. The flow device forms a stable swirling airflow, and finally enters the square combustion chamber and ignites to form a stable combustion flame. The device adopts a double-layer structure design, and the inner and outer layers are very similar. Single-layer or double-layer flame experiments can be designed according to actual needs, and the mixed combustion experiment of two different fuels can be carried out at the same time, and it can be used well with other measuring and testing instruments. It can be used in conjunction with ground; the device can achieve excellent premixing and swirl effects, with novel design, easy processing and reliable operation.
Description
技术领域technical field
本发明涉及一种燃烧器，特别是一种带有双旋转入流通道可用于多燃料掺混燃烧现象研究的燃烧器。The invention relates to a burner, in particular to a burner with double rotating inflow passages which can be used for research on multi-fuel mixed combustion phenomena.
背景技术Background technique
当前的实验研究中，特别是对预混合火焰性质的研究，气体完全预混及旋转湍流气流形成的问题一直困扰实验的进行，在国内相关领域成熟的经验较少，这也造成了在相关领域缺少成形燃烧试验台装置，而国外相关仪器成本高昂，且装置较大，无法很好地满足实验要求，没有普适性。例如Darmstadt大学设计的湍流分层火焰燃烧器，研究了火焰的分层与剪切效应，没有加入旋流器；PRECCINSTA燃烧器加入了固定的旋流通道以及小孔射流，燃料与空气一边旋转一边混合。因此，通过国内成熟的3D打印技术及完善的机械加工技术进行可视化试验台的搭建，不失为一种解决方法。In the current experimental research, especially the research on the properties of premixed flames, the problems of complete gas premixing and the formation of rotating turbulent airflow have always plagued the experiment. There is less mature experience in related fields in China, which has also caused problems in related fields. There is a lack of forming combustion test bench devices, and the cost of foreign related instruments is high, and the devices are large, which cannot well meet the experimental requirements and are not universal. For example, the turbulent stratified flame burner designed by Darmstadt University studies the layering and shearing effects of the flame without adding a swirler; the PRECCINSTA burner adds a fixed swirl channel and a small hole jet, and the fuel and air rotate while mix. Therefore, it is a solution to build a visual test bench through domestic mature 3D printing technology and perfect machining technology.
发明内容Contents of the invention
为解决现有技术存在的不足，本发明公开了一种带有双旋转入流通道可用于多燃料掺混燃烧现象研究的燃烧器。In order to solve the deficiencies in the prior art, the invention discloses a burner with double rotating inflow passages, which can be used for research on multi-fuel mixed combustion phenomena.
本发明采用的具体技术方案为：The concrete technical scheme that the present invention adopts is:
一种带有双旋转入流通道可用于多燃料掺混燃烧现象研究的燃烧器，其特征在于，燃烧器顶端设有可视化方形燃烧室，所述可视化方形燃烧室底端中心位置设有双层旋流器并通过焊接密封固定，所述双层旋流器与燃料及空气流入掺混装置A连接；A burner with double rotating inflow channels that can be used for the research of multi-fuel blending combustion phenomenon, characterized in that the top of the burner is provided with a visualized square combustion chamber, and the center of the bottom end of the visualized square combustion chamber is provided with a double-layer rotary The swirler is sealed and fixed by welding, and the double-layer swirler is connected with the fuel and air inflow blending device A;
所述双层旋流器为金属3D打印部件，其具有8个周向均匀布置的螺旋扇叶，且双层旋流器内层长度大于外层长度；所述双层旋流器中心套接中心支撑管顶端并用密封专用胶水密封，所述双层旋流器有内外两层空间，内层套接内管顶端并用密封专用胶水密封，外层套接外管顶端并用密封专用胶水密封；The double-layer cyclone is a metal 3D printing component, which has 8 spiral fan blades evenly arranged in the circumferential direction, and the length of the inner layer of the double-layer cyclone is greater than the length of the outer layer; the center of the double-layer cyclone is socketed The top of the central support tube is sealed with special glue for sealing. The double-layer cyclone has two layers of inner and outer spaces. The inner layer is socketed on the top of the inner pipe and sealed with special glue for sealing, and the outer layer is socketed with the top of the outer pipe and sealed with special glue for sealing;
所述燃料及空气流入掺混装置A包括底座内管、底座外管、外管空气进气管、外管燃料进气管、外层密封板、内管空气进气管、内管燃料进气管及内层密封板；The fuel and air inflow blending device A includes a base inner tube, a base outer tube, an outer tube air intake tube, an outer tube fuel intake tube, an outer sealing plate, an inner tube air intake tube, an inner tube fuel intake tube and an inner layer sealing board;
所述内管底端通过螺纹与底座内管顶端连接，并通过内层密封垫圈进行密封；所述外管底端通过螺纹与底座外管顶端连接，并通过外层密封垫圈进行密封；The bottom end of the inner tube is connected to the top end of the inner tube of the base through threads, and is sealed by an inner layer sealing gasket; the bottom end of the outer tube is connected to the top end of the outer tube of the base through threads, and is sealed by an outer layer sealing gasket;
所述底座内管从底座外管底端伸出，且所述底座外管底端与底座内管之间通过外层密封板密封；所述中心支撑管从底座内管底端伸出，且所述底座内管底端与中心支撑管之间通过内层密封板密封；The base inner tube protrudes from the bottom end of the base outer tube, and the bottom end of the base outer tube and the base inner tube are sealed by an outer sealing plate; the central support tube protrudes from the bottom end of the base inner tube, and The bottom of the inner tube of the base and the central support tube are sealed by an inner sealing plate;
所述底座内管下端左右两侧对称焊接内管燃料进气管及内管空气进气管；所述底座外管下端左右两侧对称焊接外管燃料进气管及外管空气进气管。The lower end of the base inner tube is symmetrically welded on the left and right sides of the inner tube fuel intake pipe and the inner tube air intake tube; the left and right sides of the base outer tube are symmetrically welded on the left and right sides of the outer tube fuel intake tube and the outer tube air intake tube.
进一步，所述的可视化方形燃烧室的内部空间为0.5m3。Further, the internal space of the visualized square combustion chamber is 0.5m 3 .
进一步，所述双层旋流器周向旋转120°，且其径向的每个切面上扇叶的截面均在双层旋流器圆柱面的法向上。Further, the double-layer swirler rotates 120° in the circumferential direction, and the section of the fan blade on each section in the radial direction is in the normal direction of the cylindrical surface of the double-layer swirler.
进一步，所述内管与外管的管道长1.2m。Further, the pipe length of the inner pipe and the outer pipe is 1.2m.
进一步，所述内管与外管及底座内管与底座外管组成的预混空间高度均在1.5m以上。Further, the height of the premixing space formed by the inner tube and the outer tube and the inner tube of the base and the outer tube of the base are all above 1.5m.
进一步，所述燃料及空气流入掺混装置A中还包括内层金属孔板、外层金属孔板，所述外管和底座外管之间安装有外层金属孔板，内管和底座内管之间安装有内层金属孔板。Further, the fuel and air flow into the blending device A also includes an inner metal orifice plate and an outer metal orifice plate, an outer metal orifice plate is installed between the outer tube and the base outer tube, and the inner tube and the base An inner metal orifice plate is installed between the tubes.
本发明的有益效果为：The beneficial effects of the present invention are:
1、本发明装置搭建技术成熟，双层旋流器为金属3D打印部件加工精度高，具有8个周向均匀布置的螺旋扇面，可以根据实验所需要气流旋转强度的大小来选择合适的螺旋角度；双层旋流器及火焰出口规格较小，结构规律性强，成本合理，易于拆卸及更换不同规格的部件，用途广泛。1. The device construction technology of the present invention is mature. The double-layer cyclone is a metal 3D printing part with high processing precision. It has 8 spiral fans uniformly arranged in the circumferential direction. The appropriate spiral angle can be selected according to the size of the airflow rotation intensity required by the experiment. ;The specifications of the double-layer cyclone and the flame outlet are small, the structure is regular, the cost is reasonable, it is easy to disassemble and replace parts of different specifications, and it has a wide range of uses.
2、燃烧器内外管中的燃料可以根据实验具体要求进行相应参数的变化，例如当量比、速度等，对预混合燃烧的研究有巨大的帮助。2. The fuel in the inner and outer tubes of the burner can be changed according to the specific requirements of the experiment, such as equivalence ratio, speed, etc., which is of great help to the research of premixed combustion.
3、该燃烧器能实现燃料与空气的完全预混，并形成稳定的旋转湍流气流，连接流量计后可以有效控制气体流量及燃料空气的预混比例，大大提高效率。3. The burner can realize the complete premixing of fuel and air, and form a stable rotating turbulent air flow. After connecting the flow meter, it can effectively control the gas flow rate and the premixing ratio of fuel and air, greatly improving the efficiency.
附图说明Description of drawings
图1为本发明一种带有双旋转入流通道可用于多燃料掺混燃烧现象研究的燃烧器的结构示意图。Fig. 1 is a schematic structural view of a burner with double rotating inflow channels in the present invention that can be used for research on multi-fuel blending combustion phenomena.
图2为本发明双层旋流器的结构图，图2(a)为双层旋流器的全剖视图，图2(b)为双层旋流器的三维结构示意图。Fig. 2 is a structural diagram of the double-layer cyclone of the present invention, Fig. 2(a) is a full sectional view of the double-layer cyclone, and Fig. 2(b) is a three-dimensional schematic diagram of the double-layer cyclone.
图3为本发明燃料及空气流入掺混装置A的全剖视图。Fig. 3 is a full sectional view of the fuel and air flowing into the blending device A of the present invention.
其中：1-可视化方形燃烧室；2-双层旋流器；3-中心支撑管；4-内管；5-外管；6-内层密封垫圈；7-外层密封垫圈；8-内层金属孔板；9-外层金属孔板；10-底座内管；11-底座外管；12-外管空气进气管；13-外管燃料进气管；14-外层密封板；15-内管空气进气管；16-内管燃料进气管；17-内层密封板。Among them: 1-Visible square combustion chamber; 2-Double-layer cyclone; 3-Central support tube; 4-Inner tube; 5-Outer tube; 6-Inner sealing gasket; 7-Outer sealing gasket; 8-Inner Layer metal orifice plate; 9-outer metal orifice plate; 10-base inner tube; 11-base outer tube; 12-outer tube air intake tube; 13-outer tube fuel intake tube; 14-outer sealing plate; 15- Inner pipe air intake pipe; 16-inner pipe fuel intake pipe; 17-inner layer sealing plate.
具体实施方式Detailed ways
下面将结合附图及实施例对本发明进行进一步说明，但本发明的保护范围并不限于此。The present invention will be further described below with reference to the drawings and embodiments, but the protection scope of the present invention is not limited thereto.
本发明旨在研究多燃料的掺混燃烧现象，比如二甲醚、甲烷等气体燃料，亦可以是CO和H2等燃料，同时可以单独控制各通道内的混合气当量比，解决了现有燃烧试验台装置中的缺陷和不足，提供的一种简单有效的燃烧试验台装置。The present invention aims to study the mixed combustion phenomenon of multiple fuels, such as gaseous fuels such as dimethyl ether and methane, which can also be fuels such as CO and H2 , and can independently control the mixed gas equivalent ratio in each channel at the same time, solving the existing problems Defects and deficiencies in the combustion test bench device, a simple and effective combustion test bench device is provided.
如图1所示，一种带有双旋转入流通道可用于多燃料掺混燃烧现象研究的燃烧器的结构示意图，燃烧器顶端设有可视化方形燃烧室1，可视化方形燃烧室1的内部空间为0.5m3，可视化方形燃烧室1为密闭装置，其内部可安装火焰监测装置，其顶端可安装尾气处理装置；可视化方形燃烧室1底端中心位置设有双层旋流器2并通过焊接密封固定，双层旋流器与燃料及空气流入掺混装置A连接；As shown in Figure 1, a schematic diagram of the structure of a burner with double rotating inflow channels that can be used for the research of multi-fuel blending combustion phenomena, the top of the burner is provided with a visualized square combustion chamber 1, and the internal space of the visualized square combustion chamber 1 is 0.5m 3 , the visual square combustion chamber 1 is a closed device, a flame monitoring device can be installed inside it, and an exhaust gas treatment device can be installed on the top; a double-layer swirler 2 is installed at the center of the bottom end of the visual square combustion chamber 1 and sealed by welding Fixed, the double-layer cyclone is connected with the fuel and air inflow blending device A;
如图2所示，双层旋流器2为金属3D打印部件，其具有8个周向均匀布置的螺旋扇叶，可以根据实验所需要气流旋转强度的大小来选择合适的螺旋角度；双层旋流器2内层长度大于外层长度，便于管道对接、安装；双层旋流器2周向旋转120°，且其径向的每个切面上扇叶的截面均在双层旋流器2圆柱面的法向上；双层旋流器2的出口高于燃烧器的底部，便于光路进入及激光诊断实验；双层旋流器2中心套接中心支撑管3顶端，双层旋流器2有内外两层空间，内层套接内管4顶端，外层套接外管5顶端；双层旋流器2在设计时，与内管4、外管5及中心支撑管3接触的地方均设计成台阶状接口，并用密封专用胶水连接，保证密封性；内管4与外管5的管道长1.2m，可以保证气流在管道中达到充分发展的湍流状态；内管4与外管5组成的预混空间高度在1.5m以上；As shown in Figure 2, the double-layer swirler 2 is a metal 3D printing component, which has 8 spiral fan blades evenly arranged in the circumferential direction, and the appropriate spiral angle can be selected according to the strength of the airflow rotation required by the experiment; The length of the inner layer of the cyclone 2 is greater than the length of the outer layer, which is convenient for pipe butt jointing and installation; the double-layer cyclone 2 rotates 120° in the circumferential direction, and the section of the fan blade on each radial cut surface is equal to that of the double-layer cyclone. 2 The normal direction of the cylindrical surface; the outlet of the double-layer cyclone 2 is higher than the bottom of the burner, which is convenient for the optical path to enter and the laser diagnosis experiment; 2 There are two layers of space inside and outside, the inner layer is socketed on the top of the inner pipe 4, and the outer layer is socketed on the top of the outer pipe 5; when the double-layer cyclone 2 is designed, it is in contact with the inner pipe 4, the outer pipe 5 and the central support pipe 3 All places are designed as step-shaped joints, and are connected with special glue for sealing to ensure sealing; the length of the inner pipe 4 and outer pipe 5 is 1.2m, which can ensure that the airflow reaches a fully developed turbulent state in the pipe; the inner pipe 4 and the outer pipe The height of the premix space composed of 5 is above 1.5m;
如图3所示，燃料及空气流入掺混装置A包括内层金属孔板8、外层金属孔板9、底座内管10、底座外管11、外管空气进气管12、外管燃料进气管13、外层密封板14、内管空气进气管15、内管燃料进气管16及内层密封板17；As shown in Figure 3, the fuel and air flow into the blending device A includes an inner metal orifice plate 8, an outer metal orifice plate 9, a base inner tube 10, a base outer tube 11, an outer tube air inlet tube 12, an outer tube fuel inlet Trachea 13, outer layer sealing plate 14, inner tube air intake tube 15, inner tube fuel intake tube 16 and inner layer sealing plate 17;
内管4底端通过螺纹与底座内管10顶端连接，并通过内层密封垫圈6进行密封，内管4和底座内管10之间安装有内层金属孔板8，确保对气流产生足够的弥散效果；外管5底端通过螺纹与底座外管11顶端连接，并通过外层密封垫圈7进行密封，外管5和底座外管11之间安装有外层金属孔板9，确保对气流产生足够的弥散效果；底座内管10与底座外管11组成的预混空间高度在1.5m以上；The bottom end of the inner tube 4 is connected to the top of the inner tube 10 of the base through threads, and is sealed by an inner layer sealing gasket 6. An inner metal orifice plate 8 is installed between the inner tube 4 and the inner tube 10 of the base to ensure sufficient air flow. Diffusion effect; the bottom end of the outer tube 5 is connected to the top end of the base outer tube 11 through threads, and is sealed by the outer layer sealing gasket 7, and an outer metal orifice plate 9 is installed between the outer tube 5 and the base outer tube 11 to ensure air flow Produce sufficient dispersion effect; the height of the premixed space formed by the base inner tube 10 and the base outer tube 11 is above 1.5m;
底座内管10从底座外管11底端伸出，且底座外管11底端与底座内管10之间通过外层密封板14密封；中心支撑管3从底座内管10底端伸出，且底座内管10底端与中心支撑管3之间通过内层密封板17密封；The base inner tube 10 protrudes from the bottom of the base outer tube 11, and the bottom of the base outer tube 11 and the base inner tube 10 are sealed by an outer sealing plate 14; the central support tube 3 protrudes from the bottom of the base inner tube 10, And the bottom of the base inner tube 10 and the central support tube 3 are sealed by an inner sealing plate 17;
底座内管10下端左右两侧对称焊接内管燃料进气管16及内管空气进气管15；底座外管11下端左右两侧对称焊接外管燃料进气管13及外管空气进气管12。The fuel intake pipe 16 and the air intake pipe 15 of the inner pipe are welded symmetrically on the left and right sides of the lower end of the base inner pipe 10;
内管燃料进气管16、内管空气进气管15、外管燃料进气管13及外管空气进气管12进入的是固定流量的燃料和空气，以确保预混合燃料满足点火和实验要求。Inner tube fuel intake pipe 16, inner tube air intake tube 15, outer tube fuel intake tube 13 and outer tube air intake tube 12 enter fixed-flow fuel and air to ensure that the premixed fuel meets ignition and experimental requirements.
本发明的工作原理：甲烷和空气分别从内管燃料进气管16及内管空气进气管15一左一右地进入内底座内管10中，二甲醚和空气分别从外管燃料进气管13及外管空气进气管12一左一右地进入底座外管11中，分别绕过管路形成对流，进行第一步的混合；甲烷/空气混合气经过内层金属孔板8、二甲醚/空气混合气经过外层金属孔板9，由于金属孔板对稳定气团的破坏作用，使燃料和空气混合形成预混气进行程度更大的预混；甲烷/空气混合气、二甲醚/空气混合气在较长的内管4、外管5中充分扩散混合，形成均匀预混合气；甲烷/空气混合气、二甲醚/空气混合气进入双层旋流器2内层区域、外层区域中，由于扇叶的作用以及惯性作用，形成稳定的旋转湍流气流，并进入可视化方形燃烧室1中；旋转湍流气体进入可视化方形燃烧室1中，点火形成稳定的火焰，以进行相应的激光诊断实验。Working principle of the present invention: methane and air enter the inner base inner tube 10 respectively from the inner pipe fuel inlet pipe 16 and the inner pipe air inlet pipe 15 from left to right, and dimethyl ether and air respectively enter from the outer pipe fuel inlet pipe 13 And the outer pipe air intake pipe 12 enters the base outer pipe 11 from left to right, respectively bypasses the pipeline to form convection, and performs the first step of mixing; the methane/air mixture passes through the inner metal orifice plate 8, dimethyl ether /Air mixed gas passes through the outer metal orifice plate 9, and due to the damage of the metal orifice plate to the stable air mass, the fuel and air are mixed to form a premixed gas for a greater degree of premixing; methane/air mixed gas, dimethyl ether/ The air mixture is fully diffused and mixed in the longer inner pipe 4 and outer pipe 5 to form a uniform premixed gas; the methane/air mixture and dimethyl ether/air mixture enter the inner layer area of the double-layer cyclone In the layer area, due to the action of fan blades and inertia, a stable rotating turbulent airflow is formed and enters into the visualized square combustion chamber 1; the rotating turbulent gas enters into the visualized square combustion chamber 1 and is ignited to form a stable flame for the corresponding Laser diagnostic experiments.
以上已以较好的实施例公布本发明，然而并非用来限制本发明，凡是采取同等替换或等效变换的方法或技术方案均在本发明的保护范围内。The above has disclosed the present invention with preferred embodiments, but it is not intended to limit the present invention. All methods or technical solutions that adopt equivalent replacement or equivalent transformation are within the protection scope of the present invention.
Claims (6)
- A kind of 1. burner that can be used for multi fuel blending combustion phenomena research with dual rotary inflow channel, it is characterised in that Burner tip, which is equipped with, visualizes square combustion chamber (1), and square combustion chamber (1) bottom dead center position of visualization is equipped with bilayer Cyclone (2) is simultaneously fixed by welded seal, and the Double layer spiral flow device (2) flows into mixing device A with fuel and air and is connected；The Double layer spiral flow device (2) is metal 3D printing component, it has 8 spiral fans being arranged circumferentially, and double-deck Cyclone (2) internal layer length is more than outer length；It is used in combination on described Double layer spiral flow device (2) center socket central support tube (3) top Glue special sealing is sealed, the Double layer spiral flow device (2) there are inside and outside two sheaf spaces, internal layer socket inner tube (4) top and with sealing Glue special seals, and outer layer socket outer tube (5) top is simultaneously sealed with sealing glue special；The fuel and air, which flow into mixing device A, includes base inner tube (10), base outer tube (11), outer tube air intake duct (12), outer tube fuel air pipe (13), outer layer sealing plate (14), inner tube air intake duct (15), inner tube fuel air pipe (16) And internal layer sealing plate (17)；Said inner tube (4) bottom is connected by screw thread with base inner tube (10) top, and close by internal layer seal washer (6) progress Envelope；Outer tube (5) bottom is connected by screw thread with base outer tube (11) top, and close by outer layer seal washer (7) progress Envelope；The base inner tube (10) is stretched out from base outer tube (11) bottom, and base outer tube (11) bottom and base inner tube (10) sealed between by outer layer sealing plate (14)；The central support tube (3) is stretched out from base inner tube (10) bottom, and described Sealed between base inner tube (10) bottom and central support tube (3) by internal layer sealing plate (17)；Inner tube fuel air pipe (16) and inner tube air intake duct are symmetrically welded at left and right sides of base inner tube (10) lower end (15)；Outer tube fuel air pipe (13) and outer tube air intake duct are symmetrically welded at left and right sides of base outer tube (11) lower end (12)。
- 2. a kind of dual rotary inflow channel that carries according to claim 1 can be used for multi fuel blending combustion phenomena research Burner, it is characterised in that the inner space of the square combustion chamber of the visualization (1) is 0.5m3。
- 3. a kind of dual rotary inflow channel that carries according to claim 1 can be used for multi fuel blending combustion phenomena research Burner, it is characterised in that the Double layer spiral flow device (2) rotates in a circumferential direction 120 °, and on each section of its radial direction flabellum cut Face is in the normal direction on Double layer spiral flow device (2) cylindrical surface.
- 4. a kind of dual rotary inflow channel that carries according to claim 1 can be used for multi fuel blending combustion phenomena research Burner, it is characterised in that said inner tube (4) and the long 1.2m of pipeline of outer tube (5).
- 5. a kind of dual rotary inflow channel that carries according to claim 1 can be used for multi fuel blending combustion phenomena research Burner, it is characterised in that said inner tube (4) and outer tube (5), base inner tube (10) and the premix of base outer tube (11) composition are empty Between height in more than 1.5m.
- 6. a kind of dual rotary inflow channel that carries according to claim 1 can be used for multi fuel blending combustion phenomena research Burner, it is characterised in that the fuel and air flow into mixing device A and further includes inner layer metal orifice plate (8), outer layer metal Orifice plate (9), is provided with inner layer metal orifice plate (8), the outer tube (5) and base between said inner tube (4) and base inner tube (10) Outer layer metal orifice plate (9) is installed between outer tube (11).
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| CN109164203A (en) * | 2018-07-24 | 2019-01-08 | 江苏大学 | A kind of low-loss turbulent combustion Visualization platform device with rotation inflow channel |
| CN111829787B (en) * | 2020-06-23 | 2022-07-22 | 江苏大学 | A Visualized Combustion Experiment Platform That Can Realize Multiple Mixing |
| CN113960242B (en) * | 2021-09-17 | 2024-07-30 | 江苏大学 | Staged combustor with two radial rotary inflow channels |
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