CN106016358A - Whirlcone integrating rotational flow, jetting and mixing functions - Google Patents

Whirlcone integrating rotational flow, jetting and mixing functions Download PDF

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Publication number
CN106016358A
CN106016358A CN201610371831.9A CN201610371831A CN106016358A CN 106016358 A CN106016358 A CN 106016358A CN 201610371831 A CN201610371831 A CN 201610371831A CN 106016358 A CN106016358 A CN 106016358A
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curve
structure
arc
wavy
cyclone
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CN201610371831.9A
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Chinese (zh)
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CN106016358B (en
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李钢
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中国科学院工程热物理研究所
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23RGENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
    • F23R3/00Continuous combustion chambers using liquid or gaseous fuel
    • F23R3/02Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
    • F23R3/04Air inlet arrangements
    • F23R3/10Air inlet arrangements for primary air
    • F23R3/12Air inlet arrangements for primary air inducing a vortex

Abstract

The invention provides a whirlcone integrating rotational flow, jetting and mixing functions. Inclined flow channels are formed in the inner side and the outer side of the whirlcone, the flame combustion rate and the mixed gas flow field speed rate can be balanced, and the combustion stability is improved. A tooth-shaped structure is arranged at the outlet end of a wavy structure of an outlet section, and therefore sufficient mixing of fuel and air is facilitated, friction losses are reduced, and the combustion stability, completeness and efficiency are improved. Compared with a structure not provided with the tooth-shaped structure, the weight of the whirlcone is reduced.

Description

一种兼具旋流、喷射与掺混作用的旋流器 One kind of both swirl and mixing action of injection of the cyclone

技术领域 FIELD

[0001]本发明涉及燃烧装置技术领域,尤其是一种兼具旋流、喷射与掺混作用的旋流器。 [0001] Technical Field The present invention relates to a combustion device, in particular a cyclone both, ejection and mixing action of the cyclone.

背景技术 Background technique

[0002]燃气轮机由于单机体积小和输出功率大等特点,广泛应用于电力、航空、石油化工等行业。 [0002] As the stand-alone gas turbine output power and small size and other characteristics, widely used in electric power, aviation, petrochemical and other industries. 由于能源危机和环境恶化,急需发展高效清洁燃烧室,要求燃烧室具有点火可靠、燃烧稳定、效率高及低排放等特性。 Since the energy crisis and environmental deterioration, urgent need to develop efficient and clean combustion chamber, the combustion chamber has required reliable ignition, combustion stability, high efficiency and low emissions characteristics. 当前我国环境污染问题十分严重,发展燃气轮机清洁燃烧技术十分迫切。 At present, China is very serious problem of environmental pollution, the development of clean-burning gas turbine technology is very urgent. 燃气轮机厂商已经开发了多种清洁燃烧技术,如贫预混燃烧技术、稀相预混预蒸发技术、贫油直喷技术以及催化燃烧技术等,这些技术虽然可以有效降低污染物的排放,但都面临燃烧不稳定的问题、而且这件燃烧器结构复杂、零部件多。 The gas turbine manufacturers have developed a variety of clean combustion technology, such as lean premixed combustion technology, the dilute phase premixing pre-evaporation techniques, direct injection and lean catalytic combustion technology, although these techniques can reduce the emission of pollutants, but are faced with the problem of combustion instability, and this complicated structure of the burner, spare parts and more.

[0003]喷射装置,例如喷嘴,是燃气轮器的重要部件,其性能在很大程度上决定着燃烧效率、安全性和稳定性,旋流器作为喷射装置中的核心部件其结构对燃烧产生很大影响,尤其是对气体的流向、掺混效果有很大影响,但现有的旋流器在这些方面的效果不佳,因而,本领域亟需一种能够提升燃烧效果、兼具多种功能的旋流器。 [0003] ejecting apparatus, such as a nozzle, a gas turbine is an important component of the device, which determines the performance of the combustion efficiency, safety and stability, largely as a cyclone injection device structure of the core component of combustion greatly affected, especially the flow of gas, the mixing effect has a great influence, but ineffective conventional cyclone in these areas, therefore, need in the art which can enhance combustion efficiency, both multi- cyclone kinds of functions.

发明内容 SUMMARY

[0004](一)要解决的技术问题 [0004] (a) To solve technical problems

[0005]有鉴于此,本发明的主要目的在于提供了一种兼具旋流、喷射与掺混作用的旋流器。 [0005] In view of this, the main object of the present invention to provide both a swirl injector with the mixing action of the cyclone.

[0006] (二)技术方案 [0006] (ii) Technical Solution

[0007]本发明提供了一种兼具旋流、喷射与掺混作用的旋流器,包括:进口段和出口段;所述进口段沿轴向逐渐过渡至出口段,所述出口段由多个波浪形结构沿周向排列而成,所述波浪形结构的内外两侧形成斜流通道2,所述波浪形结构的出口端3具有齿形结构。 [0007] The present invention provides both a swirl injector with the mixing action of the swirler, comprising: inlet and outlet sections; axially of the inlet section to the outlet section of a gradual transition, the outlet section of a plurality of wave-shaped structures arrayed along the circumferential direction, forming the inner and outer sides of the wave shaped configuration of the helical flow path 2, 3 has a toothed structure of the outlet end of the wave-shaped structure.

[0008]优选地,所述波浪形结构沿轴向不同位置处的波浪形截面曲线具有相同形状,所述不同位置处的波浪形截面曲线的扭转角度沿下游方向逐渐增大,沿轴向所有位置处的波浪形截面曲线形成波浪形结构的曲面8,所述波浪形结构的曲面内外两侧形成斜流通道2。 [0008] Preferably, the wavy cross section profile of the undulating structure at different positions in the axial direction having the same shape, the angle of twist curve wavy cross section at said different positions is gradually increased in the downstream direction, all in the axial direction wavy cross section profile is formed at the position of the curved undulating structure 8, the inside and the outside surface of the undulating structure 2 is formed inclined flow channel.

[0009]优选地,所述齿形结构为单齿结构、双齿结构或多齿结构。 [0009] Preferably, the tooth structure is a monodentate, bidentate or multidentate structure.

[0010]优选地,所述齿形结构的轮廓为正弦波形、三角形、四边形或带倒角的四边形。 [0010] Preferably, the contour of the tooth structure is sinusoidal, triangular, quadrangular or chamfered quadrilateral.

[0011]优选地,所述进口段的进口 I具有圆形截面曲线,所述圆形截面曲线的每一段圆弧沿轴向逐渐过渡至所述出口段的一个波浪形结构。 [0011] Preferably, the inlet of the inlet having a circular cross section I curve, the circular cross section of each of the arcuate curve in the axial direction a gradual transition to the outlet section of the undulating structure.

[0012]优选地,所述不同位置处的波浪形截面曲线的扭转角度沿下游方向按照线性分布规律逐渐增大。 Twist angle [0012] Preferably, the wavy profile curve at the different positions in the downstream direction gradually increases in a linear distribution.

[0013]优选地,所述不同位置处的波浪形截面曲线的扭转角度为H*/H XE,其中,H为旋流器的轴向高度,E为波浪形结构出口端的波浪形截面曲线的扭转角度,H*为不同位置处的波浪形截面曲线的轴向高度。 [0013] Preferably, the twist angle of the wavy cross-sectional profile at different positions of the H * / H XE, where, H is the axial height of the cyclone, the wavy cross section E outlet end of the wavy curve structure twist angle, H * is the axial height of the wavy profile curve at different positions.

[0014]优选地,所述波浪形结构的波浪形截面曲线与内切圆和外切圆相切,其包括第一曲线和第二曲线,所述第一曲线由所述内切圆的边缘径线oa和对称径线oc、内切圆的圆弧ac和外切圆的圆弧j I围成,所述内切圆的圆弧ac和外切圆的圆弧j I被等分径线ob等分,所述第一曲线包括第一圆弧ah、第一直线hi和第二圆弧ij,所述第一圆弧ah与内切圆和等分径线ob相切,第一直线与等分径线ob重合,所述第二圆弧ij与外切圆和等分径线ob相切,第二曲线与第一曲线关于对称径线oa对称。 [0014] Preferably, the wavy cross-sectional configuration of the wavy curve inscribed circle and circumscribed circle tangent, which comprises a first curve and a second curve, said first curve by the edge of the inscribed circle oa and symmetric radial line OC diameters, of the inscribed circle and the circumscribed circle arc ac arc surrounded j I, the arc of the inscribed circle and the circumscribed circle of the ac j I arcuate path is halved ob aliquot line, the first curve comprises a first arc ah, hi a first and a second straight line ij of the arc, said first arc and ah inscribed circle diameters and aliquots ob tangent of in line with the radial line aliquot ob coincides with the second arc ij and circumscribed circle diameters ob aliquots tangent curve and a second curve symmetrical oa first radial line of symmetry.

[0015] 优选地,所述第一圆弧ah的半径rl=Rl/(l/sinB+l),其中,Rl为内切圆半径,B为边缘径线oa与等分径线ob的夹角;所述第二圆弧ij的半径r2 = R2/(1/sinC-l),其中,R2为外切圆半径,C为等分径线ob与对称径线oc的夹角。 [0015] Preferably, the first arc ah radius rl = Rl / (l / sinB + l), wherein, Rl is the radius of the inscribed circle, B is a radial line edge line oa and ob folder aliquot diameter angle; ij is the radius of the second arc r2 = R2 / (1 / sinC-l), wherein, R2 is the radius of the circumscribed circle, C is the angle between the radial line aliquots ob and oc radial line of symmetry.

[0016]本发明还提供了一种喷射装置,包括:上述旋流器、内层圆筒9和外层圆筒10,所述旋流器设置于内层圆筒9和外层圆筒10之间。 [0016] The present invention further provides a spray apparatus, comprising: a cyclone above, the inner cylinder 10 and outer cylinder 9, a swirler disposed in the inner cylinder 10 and outer cylinder 9 between.

[0017](三)有益效果 [0017] (c) beneficial effect

[0018]从上述技术方案可以看出,本发明的兼具旋流、喷射与掺混作用的旋流器具有以下有益效果: [0018] As can be seen from the above technical solutions, both swirl and mixing action of injection of the cyclone according to the invention has the following advantages:

[0019] (I)其内外两侧形成斜流通道,气流在斜流通道中沿轴向运动的同时还沿圆周方向运动,当旋流器用于燃料和空气的混合气时,在斜流通道的作用下,混合气旋流器出口会产生低速区,火焰燃烧速率与混合气的流场速率均衡,可以防止熄火和火焰脉动现象的发生,提高燃烧的稳定性,低速区还使得未燃烧完全的混合气回流,回流的混合气继续参与燃烧,提高了燃烧的完全性和效率; [0019] (I) which is formed on both sides of the inner and outer helical flow channel, the air flow moving in the axial direction of the helical flow channel also in the circumferential direction, when the air swirler for mixing fuel and air in the flow channel of the swash under the action of mixing flow cyclone outlet will have a low-speed region, the flow rate and the field rate of combustion of the mixture gas equilibrium, misfire can be prevented and flame pulsation, improve combustion stability, so that the low speed region but also unburned complete mixing gas reflux, refluxed for burning mixed gas continue to participate in, and improve the completeness of combustion efficiency;

[0020] (2)出口段波浪形结构的出口端具有齿形结构,当旋流器内外两侧分别通入燃料和空气时,燃料和空气可以在齿形结构的作用下充分掺混,并减小摩擦损失,提高了燃烧的稳定性、完全性和效率,相比于不具有齿形结构的结构,还减轻了旋流器的重量; [0020] (2) the outlet end of the wave shaped configuration of the outlet section has a toothed structure, when the inner and outer sides of the cyclone were introduced into the fuel and air, fuel and air can be sufficiently blended under the action of tooth structure, and reduced friction loss and improve the combustion stability, complete and efficient compared to the structure having no tooth structure, also reduces the weight of the cyclone;

[0021] (3)由径向对称的第一曲线和第二曲线组成的波浪形截面曲线,可以使斜流通道内的气流流场速率更加均匀,有利于进一步提高燃烧的稳定性、完全性和效率; [0021] (3) a wave-shaped cross-section radially symmetric first and second curves consisting of curves, the air flow rate in the flow field more uniform helical flow path, is conducive to further improve combustion stability, and complete effectiveness;

[0022] (4)通过调节波浪形结构波浪形截面曲线的扭转角度,可以改变反应流体沿圆周方向旋转运动的轨迹,反应流体流场速率随之变化,以便更好地实现火焰燃烧速率与反应流体流场速率的匹配。 [0022] (4) By adjusting the twist angle of the wavy cross-sectional configuration curved undulations, the reaction may vary fluid trajectory of rotational movement in the circumferential direction, the reaction rate of change with a fluid flow field, in order to better achieve the reaction rate and flame rate matching fluid flow field.

附图说明 BRIEF DESCRIPTION

[0023]图1为本发明实施例旋流器的三维示意图; [0023] Fig 1 a schematic diagram of a three-dimensional embodiment of the invention the cyclone;

[0024]图2为图1所示旋流器的波浪形结构出口端的内切圆和外切圆示意图; The outlet end of the undulating structure [0024] FIG. 2 is a swirler shown in FIG inscribed circle and the circumscribed circle schematic;

[0025]图3为图1所示的旋流器的波浪形结构出口端与内切圆和外切圆的位置关系图; [0025] FIG. 3 is shown in FIG. 1 swirler undulating configuration and the outlet end of the positional relation between the inscribed circle and the circumscribed circle;

[0026]图4为图1所示旋流器的波浪形结构出口端参数示意图; The outlet end of the wave-shaped configuration [0026] FIG. 4 is a diagram of a swirler shown a schematic view parameter;

[0027]图5为图1所示旋流器的波浪形截面曲线与进口段进口圆弧示意图; [0027] FIG. 5 is a swirler shown in FIG. 1, a cross-sectional wavy curve inlet arc segment schematic inlet;

[0028]图6为图5所示波浪形结构出口端的波浪形截面曲线的最大扭转角度示意图; [0028] FIG. 6 is shown in FIG. 5 the maximum torsion angle of the outlet end of the undulating structure of the wavy cross-sectional schematic curve;

[0029]图7为图5所示旋流器的波浪形截面曲线与进口段进口圆弧的侧视图; [0029] FIG. 7 is a swirler shown in FIG. 5 is a cross-sectional wavy curve inlet side with the inlet arc segment;

[0030]图8为图5所示旋流器的波浪形截面曲线与进口段进口圆弧的俯视图; [0030] FIG 8 is shown in Fig swirler inlet arcuate cross-sectional plan view of wavy curve inlet section;

[0031]图9为图5所示的旋流器的波浪形截面曲线的曲面示意图; Surfaces [0031] FIG. 9 is a swirler shown in FIG. 5 schematic wavy profile curve;

[0032]图10为本发明实施例的波浪形结构出口端为齿形结构的旋流器三维示意图; [0032] FIG. 10 is a schematic view of a three-dimensional configuration of the toothed swirler outlet end of the undulating structure of the present embodiment of the invention;

[0033]图11为单齿结构的旋流器示意图; [0033] FIG. 11 is a schematic diagram swirler monodentate structure;

[0034]图12为双齿结构的旋流器示意图; [0034] FIG. 12 is a schematic view of the cyclone bidentate;

[0035]图13为本发明实施例的喷射装置的结构示意图。 [0035] FIG 13 a schematic view of an embodiment of the injection device of the present invention.

[0036]【符号说明】 [0036] EXPLANATION OF SYMBOLS

[0037] 1-进口;2-斜流通道;3-出口端;4、5、6_波浪形截面曲线;7-圆弧;8-曲面;9-内层圆筒;10-外层圆筒; [0037] 1- inlet; 2- helical flow channel; 3- outlet end; 4,5,6_ wavy profile curve; 7- arc; 8- surface; 9- inner cylinder; 10- outer circle cylinder;

[0038] A-波浪形截面曲线轮廓的角度;B-边缘径线oa和等分径线ob的夹角;C-等分径线ob和对称径线oc的夹角;E-波浪形结构出口端的波浪形截面曲线的扭转角度;H-旋流器的轴向高度;Hl-波浪形截面曲线4和5之间的轴向距离、波浪形截面曲线5和6之间的轴向距离;H2-波浪形截面曲线6与圆弧7之间的轴向距离;Rl-波浪形结构出口端内切圆的半径;R2-波浪形结构出口端外切圆的半径;r 1-第一圆弧的半径;r2-第二圆弧的半径;a、b、c、d、e_角度A对应的内切圆圆弧等分点;O-内切圆和外切圆的圆心;ah-第一圆弧;h1-第一直线;i j-第二圆弧;f-边缘径线oa上的点;g_对称径线oc上的点;内切圆的圆弧ac ;外切圆的圆弧 [0038] A- angular cross-sectional profile of the wavy curve; B- edge angle and a radial line oa ob aliquots of diameters; ob angle C- aliquot radial line diameters and symmetry of oc; E-undulating structure the twist angle of the outlet end of the wavy cross section curve; H- axial height of the swirler; axial distance between the 4 and 5 section curves H1-wavy, undulated profile curve between 5 and 6, the axial distance; H2- wavy axial distance between the cross section 6 and the arcuate curve 7; Rl- the undulating structure of the exit end of the inscribed circle radius; R2- undulating structure outer end of the outlet radius of the inscribed circle; r 1- a first circle radius of the arc; r2- radius of the second arc; equant inscribed circle arcs a, b, c, d, e_ a corresponding angle; O- inscribed circle and the circumscribed circle center; AH- a first arc; H1- a first straight line; i j- second arc; F- upper edge of the radial line oa point; a point on the radial line of symmetry oc g_; AC arc of the inscribed circle; exo arc of a circle

jlo jlo

具体实施方式 Detailed ways

[0039]本发明提出了一种兼具旋流、喷射与掺混作用的旋流器,该旋流器上的斜流通道可以实现燃烧反应物的旋流与喷射,齿形结构的出口端可以促进燃烧反应物的掺混、减小燃烧反应物的摩擦损失,该旋流器兼具旋流、喷射和促进掺混三种作用,具有结构简单紧凑、重量轻的优点,能够减少燃烧器的部件数目、减小燃烧器尺寸、减轻燃烧器重量。 [0039] The present invention provides both a swirl injector with the mixing action of the cyclone, the helical flow path on the swirler swirl combustion can be achieved with the injection of the reactants, the outlet end of the tooth structure blend can promote the combustion of the reactants, reduce friction losses combustion reactants, the swirler both swirl, facilitate injection and mixing three roles, having a simple and compact structure, the advantages of light weight, can be reduced burner the number of parts to reduce the size of the burner, the burner reduce weight.

[0040]为使本发明的目的、技术方案和优点更加清楚明白,以下结合具体实施例,并参照附图,对本发明进一步详细说明。 [0040] To make the objectives, technical solutions, and advantages of the present invention will become more apparent hereinafter in conjunction with specific embodiments, and with reference to the accompanying drawings, the present invention is described in further detail.

[0041]参见图1,本发明实施例提供了一种旋流器,其包括进口段和出口段,出口段由N个波浪形结构沿周向排列而成,波浪形结构沿轴向不同位置处具有相同形状的波浪形截面曲线,波浪形截面曲线的扭转角度沿下游方向逐渐增大,沿轴向所有位置处的波浪形截面曲线形成波浪形结构的曲面8,波浪形结构曲面内外两侧形成斜流通道2,其中,波浪形结构的数量N不予限制,只要能实现兼具旋流、喷射与掺混作用即可,数量N的取值例如但不限于2^N^lOOo [0041] Referring to Figure 1, embodiments of the present invention provides a swirler, which includes an inlet section and an outlet section, the outlet section of N arrayed wave-shaped configuration in the circumferential direction, the undulating structure is axially different positions at the same cross-sectional shape of the wavy curved, wavy profile curve of the twist angle is gradually increased in the downstream direction, the surface of the undulating structure 8 along a wavy cross section profile is formed at the axial positions of all, wave-shaped curved configuration and external sides 2 helical flow channel is formed, wherein the number N of the undulating structure that does not limit, both the swirling flow can be achieved as long as the injection effect can be blended with, for example, the value of N number, but not limited to 2 ^ N ^ lOOo

[0042] 进口段的进口I具有圆形截面曲线,其整体沿轴向逐渐过渡至出口段,即进口段进口的每一段圆弧沿轴向逐渐过渡至出口段的一个波浪形结构,进口段进口的每一段圆弧均对应出口段的一个波浪形结构。 Import [0042] The inlet section of the curve I has a circular section, a gradual transition in its entirety axially to the outlet section, i.e. a circular arc in the axial direction of each segment imported inlet gradual transition to a wavy structure of the outlet section, the inlet section each arcuate section of the inlet undulating structure corresponds to one of the outlet section.

[0043]如图10、11和12所示,出口段的波浪形结构的出口端3具有齿形结构,齿形结构可以采用单齿结构(图10、图11)、双齿结构(图12)或多齿结构,齿形结构的齿数量可以为1-1000个,齿形结构的轮廓可以是正弦波形、三角形、四边形、带倒角的四边形,优选为四边形。 [0043] As shown in FIG. 10, 11 and 12, the outlet end 3 of the undulating structure of the outlet section has a toothed structure, the toothed structure monodentate structure (FIG. 10, FIG. 11) may be used, bidentate (FIG. 12 ) or toothing, the toothed structure of the number of teeth may be 1 to 1000, the contour of the tooth structure may be sinusoidal, triangular, quadrilateral, quadrangle with chamfered, preferably quadrangular.

[0044]本发明实施例的旋流器,其内外两侧形成斜流通道,气体由进口段至出口段的方向流动,气体流经进口段后进入出口段的斜流通道,气流在斜流通道中沿轴向运动的同时还沿圆周方向运动,并由出口段喷出旋流器,从而产生旋流效果。 [0044] Example embodiments of the present invention, the cyclone is formed on both sides of the inner and outer helical flow path, the gas flow direction from the inlet section to the outlet section, the inlet section of the gas flowing into the helical flow channel outlet section, the circulating air flow in the swash tract is also axially movable in the circumferential direction by swirler ejection outlet section, so that swirl effect. 当旋流器用于燃料和空气的混合气时,在斜流通道的作用下,混合气旋流器出口会产生低速区,点火燃烧后,火焰燃烧速率与混合气的流场速率均衡,可以防止熄火和火焰脉动现象的发生,提高燃烧的稳定性,低速区还使得未燃烧完全的混合气回流,回流的混合气继续参与燃烧,提高了燃烧的完全性和效率。 When the air swirler for mixing fuel and air, helical flow channel in the role of mixing produces cyclonic flow outlet low regime, after ignition combustion, the flow rate and the field rate combustion gas equilibrium mixture can be prevented from stalling and flame pulsation phenomenon occurs, improving combustion stability, so that the low speed region but also thorough mixing of unburned gas recirculation, gas mixture continues refluxing part in the combustion, improve the combustion efficiency and complete. 同时,出口段波浪形结构的出口端具有齿形结构,当旋流器内外两侧分别通入燃料和空气时,除具有上述旋流喷射效果外,燃料和空气可以在齿形结构的作用下充分掺混,并减小摩擦损失,提高了燃烧的稳定性、完全性和效率,相比于不具有齿形结构的结构,还减轻了旋流器的重量,可以用于各种燃烧器的喷射装置中。 At the same time, the outlet end of the outlet section of the undulating structure has a toothed structure, when the inner and outer sides of the cyclone were introduced into the fuel and air, in addition to the above-described effect swirling injection, the fuel and air can be under the action of the toothed structure sufficiently blended and reduced friction losses, improved combustion stability, efficiency and completeness, as compared to the structure having no tooth structure, also reduces the weight of the cyclone, it may be used for a variety of burner injection device.

[0045]在本实施例中,旋流器为整体呈圆筒状的结构,内外两侧是指圆筒状结构的内部一侧和外部一层,其轴向为圆筒状结构对称轴延伸的方向,其周向为以对称轴为中心的圆周方向,截面是指与垂直于轴向的平面,下游方向是指从进口段的进口I至出口段的出口的方向。 [0045] In the present embodiment, the cyclone as a whole a cylindrical shape structure, refers to the internal and external sides and the outer side of the cylindrical structure of the layer, which is a cylindrical structure axially extending axis of symmetry direction, its circumference is centered on the axis of symmetry in the circumferential direction, the cross section refers to a plane perpendicular to the axial, downstream direction is the direction from the inlet I to the outlet of the inlet section of the outlet section.

[0046]进一步地,本发明实施例的旋流器,其波浪形结构的波浪形截面曲线由径向对称的第一曲线和第二曲线组成。 [0046] Further, embodiments of the present invention swirler embodiment, which wavy profile curve undulating structure by radially symmetric first and second curves composition. 图2示出了波浪形结构出口端的内切圆和外切圆,其半径分别为Rl和R2,A表示一个波浪形截面曲线轮廓的角度,a、b、c、d、e分别为角度A对应的内切圆的圆弧等分点。 FIG 2 illustrates the inscribed circle and the circumscribed circle structure of the outlet end of the undulations, which radii Rl and R2, A represents a wavy cross section a curvilinear profile angle, a, b, c, d, e respectively an angle A inscribed circle of the corresponding arc equant. 图3和图4示出了波浪形结构出口端的波浪形截面曲线与内切圆和外切圆的位置关系,内切圆与波浪形截面曲线开口端相切,外切圆与波浪形截面曲线闭口端相切,对称径线oc为波浪形截面曲线的对称轴,第一曲线和第二曲线关于对称径线oc对称,以波浪形截面曲线的第一曲线为例进行说明,第一曲线由内切圆的边缘径线oa和对称径线oc、内切圆的圆弧ac和外切圆的圆弧j I围成,内切圆的圆弧ac和外切圆的圆弧j I被等分径线ob等分,第一曲线由第一圆弧ah、第一直线hi和第二圆弧ij组成,边缘径线oa和等分径线ob的夹角B与等分径线ob和对称径线oc的夹角C相等。 3 and FIG. 4 shows a wave-shaped cross section, and the circumscribed circle positional relationship curve inscribed circle undulating structure outlet end of the inscribed circle of the wavy cross-sectional profile open end tangent to the circumscribed circle and the wavy profile curve tangent to the closed end, oc radial line of symmetry axis of symmetry of the wave-shaped cross-sectional profile, the first and second curves on radial line of symmetry oc symmetry, a first curved wavy profile curve as an example, the first curve edge of the inscribed circle and the radial line of symmetry oa OC diameters, of the inscribed circle and the circumscribed circle arc ac arc surrounded j I, the inscribed circle and the circumscribed circle arc ac arc j I is aliquots diameters ob aliquot, the first by a first arcuate curve ah, hi a first straight line and the second arc ij and the margin diameters oa and ob aliquots diameters angle B with aliquots radial line ob equal diameters and symmetry angle oc C.

[0047]第一圆弧ah分别与内切圆和等分径线ob相切于点a和点h,f为边缘径线oa上的点且fh垂直于等分径线ob,线段af和fh的长度等于第一圆弧ah的半径rl,即满足sinB = rl/(Rl-rl), BPrl =Rl/(1/sinB+l); [0047] The first arc ah, respectively, and aliquots of the inscribed circle tangent to the radial line ob points a and h, f is the point on the edge perpendicular to the radial line bisecting fh oa and ob radial line, and the line af fh is equal to the length of the radius of the first arc ah rl, i.e. meet sinB = rl / (Rl-rl), BPrl = Rl / (1 / sinB + l);

[0048]第二圆弧ij分别与外切圆和等分径线ob相切于点j和点i,g为对称径线oc上的点且gi垂直于等分径线ob,线段gi和gj的长度等于第二圆弧ij的半径r2,即满足sinC = r2/(R2+r2),即r2 = R2/(l/sinC-l)。 [0048] The second arc ij respectively circumscribed circle diameters and aliquots ob tangent to point j and the point i, g is a point on the radial line of symmetry perpendicular gi ob and oc radial line bisecting the line segment and gi gj length of the second arc ij is equal to the radius r2, is met sinC = r2 / (R2 + r2), i.e., r2 = R2 / (l / sinC-l). 与波浪形截面曲线的第一曲线对称的第二曲线形状可参照上述形状,在此不再赘述。 The first curved profile curve wavy curved shape may be symmetrical with reference to the second shape, are not repeated here. 径向为旋流器圆筒状结构的半径方向,即内切圆和外切圆的半径方向。 Radial direction of the radius of the cyclone cylindrical configuration, i.e. the inscribed circle and the circumscribed circle of the radial direction.

[0049]具有上述波浪形结构的旋流器,可以使斜流通道内的气流流场速率更加均匀,有利于进一步提高燃烧的稳定性、完全性和效率。 [0049] The above-described cyclone having undulating structure, it is possible that the gas flow rate in the flow field more uniform helical flow path, is conducive to further improve combustion stability, efficiency and completeness.

[0050]优选地,进口段和出口段的轴向高度可以相同,即旋流器从二分之一轴向高度处开始,其截面形状为波浪形截面曲线。 [0050] Preferably axially, the inlet and outlet sections of the same height, i.e. the axial swirler starts at one-half the height of its cross-sectional shape is a wavy cross section profile.

[0051]在本实施例中,波浪形结构波浪形截面曲线的扭转角度是指,波浪形结构波浪形截面曲线与该波浪形结构对应的进口段进口的圆弧之间的夹角,如图5所示,同一波浪形结构不同位置处的波浪形截面曲线4、5、6与该波浪形结构对应的进口段进口的圆弧7之间具有不同夹角,其中,波浪形截面曲线的扭转角度沿下游方向按照一分布规律逐渐增大,优选地,该分布规律为线性分布,如图6所示,波浪形结构出口端的波浪形截面曲线的扭转角度为E,E为波浪形结构的波浪形截面曲线的最大扭转角度。 [0051] In the present embodiment, the twist angle undulating structure undulated profile curve means that the angle between the wave-shaped cross-sectional configuration wavy curve inlet section of the wave-shaped configuration corresponding to the inlet arc, FIG. , the wavy cross section profile at the different positions of the same wave-shaped configuration with the inlet 4,5,6 undulating structure corresponding inlet arc segment having a different angle between 75, wherein the twisted, wavy profile curve angle gradually increases in the downstream direction at a distribution, preferably a linear distribution of the distribution shown in Figure 6, the torsion angle of the outlet end of the undulating structure of the wavy cross section curve is E, E configuration of the wave-undulated the maximum torsion angle of the curve-shaped section. 波浪形结构的轴向高度为H*位置处的波浪形截面曲线的扭转角度为D = H*/HXE,H为旋流器的轴向高度,即进口至出口之间的距离。 The axial height of the undulating structure of the twist angle of the wavy cross-sectional profile at a position H * D = H * / HXE, H is the axial height of the cyclone, i.e. the distance between the inlet to the outlet.

[0052]如图7和图8所示,其中波浪形截面曲线4和5之间的轴向距离、波浪形截面曲线5和6之间的轴向距离相同,均为Hl且H1=H/4,H为旋流器的轴向高度,波浪形截面曲线6与圆弧7之间的轴向距离为H2,且H2 = H/2,由上述扭转角度的线性分布规律可知,波浪形截面曲线6的扭转角度为E/2,波浪形截面曲线5的扭转角度为3E/4,波浪形截面曲线4的扭转角度为E,如图9所示,波浪形截面曲线4、5、6以及所有相同形状的波浪形截面曲线形成波浪形结构的曲面8。 [0052] As shown in FIGS. 7 and 8, wherein the same axial distance between the axial distance between the cross-sectional wavy curve 4 and 5, a cross-sectional wavy curves 5 and 6, both Hl and H1 = H / 4, H is the axial height of the cyclone, wavy profile curve 6 and 7 the axial distance between the circular arc H2, and H2 = H / 2, seen from the linear distribution of the torsion angle, a wave-shaped cross section 6 is the angle of twist curve E / 2, the twist angle wavy profile curve 5 of 3E / 4, the torsion angle of wavy profile curve 4 is E, 9, and 4,5,6 wavy profile curve all of wavy curved profile curve of the same shape of the undulating structure 8.

[0053]本发明实施例的旋流器,通过调节波浪形结构波浪形截面曲线的扭转角度,可以改变反应流体沿圆周方向旋转运动的轨迹,反应流体流场速率随之变化,以便更好地实现火焰燃烧速率与反应流体流场速率的匹配。 [0053] The embodiment of the present invention swirler embodiment, by adjusting the wavy cross-sectional configuration wavy curve twist angle, may change the trajectory of the rotational movement of the reaction fluid in the circumferential direction, the reaction rate of the fluid flow field will vary in order to better flame achieve matching with the reaction rate of a fluid flow field rate.

[0054]在本发明的另一个实施例中,提供了一种用于燃烧器的喷射装置,例如喷嘴,其包括上述旋流器、内层圆筒9和外层圆筒10,如图13所示,旋流器设置于内层圆筒9和外层圆筒10之间,气体进入喷嘴后,在斜流通道中沿轴向运动的同时还沿圆周方向运动,由出口喷出后产生旋流效果,当旋流器用于燃料和空气的混合气时,在斜流通道的作用下,喷嘴出口会产生低速区,点火燃烧后,火焰燃烧速率与混合气的流场速率均衡,可以防止熄火和火焰脉动现象的发生,提高燃烧的稳定性,低速区还使得未燃烧完全的混合气回流,回流的混合气继续参与燃烧,提高了燃烧的完全性和效率。 [0054] In another embodiment of the present invention, there is provided injection apparatus for a combustor, such as a nozzle, which comprises a cyclone above, the inner cylinder 10 and outer cylinder 9, 13 FIG swirler disposed between the inner cylinder 10 and outer cylinder 9, the gas entering the nozzle, the axial movement of the helical flow channel also in the circumferential direction, is generated by the rear discharge outlet screw flow effect, when air swirler for mixing fuel and air, helical flow channel in the role of the nozzle outlet will have a low-speed region, combustion after ignition, combustion flow rate and the field rate of the mixed gas balancing can prevent flameout and flame pulsation phenomenon occurs, improving combustion stability, so that the low speed region but also thorough mixing of unburned gas recirculation, gas mixture continues refluxing part in the combustion, improve the combustion efficiency and complete. 同时,波浪形结构的出口端具有齿形结构,当旋流器内外两侧分别通入燃料和空气时,燃料和空气可以在齿形结构的作用下充分掺混,并减小摩擦损失,提高了燃烧的稳定性、完全性和效率,相比于不具有齿形结构的结构,还减轻了喷嘴的重量。 At the same time, the outlet end of the wave-shaped structure having a toothed structure, when the inner and outer sides of the cyclone were introduced into the fuel and air, fuel and air can be sufficiently blended under the action of tooth structure, and to reduce friction loss and improve the combustion stability, complete and efficient compared to the structure having no tooth structure, also reduces the weight of the nozzle.

[0055]需要说明的是,在附图或说明书正文中,未绘示或描述的实现方式,均为所属技术领域中普通技术人员所知的形式,并未进行详细说明。 [0055] Incidentally, in the drawings or the specification text, implementation not shown or described, one skilled in the art are forms of ordinary skill in the art, it is not described in detail. 此外,上述对各元件的定义并不仅限于实施例中提到的各种具体结构、形状,本领域普通技术人员可对其进行简单地更改或替换,例如: Further, the definition of each of the various elements is not limited to the specific embodiments mentioned configuration, shape embodiments, those of ordinary skill in the art can be easily changed or replaced, for example:

[0056] (I)波浪形结构还可以采用其他构造,只要能够完成相同的功能即可; [0056] (I) the wavy structure may also be employed other configurations, as long as the same functions can be completed;

[0057] (2)本文可提供包含特定值的参数的示范,但这些参数无需确切等于相应的值,而是可在可接受的误差容限或设计约束内近似于相应值; [0057] (2) provided herein can contain a specific exemplary parameter values, these parameters need not exactly equal to the corresponding value, but may be similar to the corresponding capacitance values ​​within the design constraints or limits within acceptable error;

[0058] (3)实施例中提到的方向用语,例如“上”、“下”、“前”、“后”、“左”、“右”等,仅是参考附图的方向,并非用来限制本发明的保护范围; [0058] (3) directional terms mentioned in the embodiment, for example, "upper", "lower", "front", "rear", "left", "right", only the direction of reference to the drawings, not intended to limit the scope of the present invention;

[0059] (4)上述实施例可基于设计及可靠度的考虑,彼此混合搭配使用或与其他实施例混合搭配使用,即不同实施例中的技术特征可以自由组合形成更多的实施例。 [0059] (4) The above embodiments may be based on design considerations and reliability, mixed with one another or used with the other embodiments mix and match, i.e. technical features of different embodiments can be freely combined to form further embodiments.

[0060]综上所述,本发明提供的旋流器,其内外两侧形成斜流通道,气体由进口段至出口段的方向流动,气体流经进口段后进入出口段的斜流通道,气流在斜流通道中沿轴向运动的同时还沿圆周方向运动,并由出口段喷出旋流器,从而产生旋流效果。 [0060] In summary, the present invention provides a cyclone whose inner helical flow channel is formed on both sides, to the gas flow direction of the outlet sections by the inlet section, the gas flows through the inlet flow channel outlet section into the inclined section, stream moves axially in the flow channel but also obliquely in the circumferential direction by swirler ejection outlet section, so that swirl effect. 当旋流器用于燃料和空气的混合气时,在斜流通道的作用下,混合气旋流器出口会产生低速区,点火燃烧后,火焰燃烧速率与混合气的流场速率均衡,可以防止熄火和火焰脉动现象的发生,提高燃烧的稳定性,低速区还使得未燃烧完全的混合气回流,回流的混合气继续参与燃烧,提高了燃烧的完全性和效率。 When the air swirler for mixing fuel and air, helical flow channel in the role of mixing produces cyclonic flow outlet low regime, after ignition combustion, the flow rate and the field rate combustion gas equilibrium mixture can be prevented from stalling and flame pulsation phenomenon occurs, improving combustion stability, so that the low speed region but also thorough mixing of unburned gas recirculation, gas mixture continues refluxing part in the combustion, improve the combustion efficiency and complete. 同时,出口段波浪形结构的出口端具有齿形结构,当旋流器内外两侧分别通入燃料和空气时,除具有上述旋流喷射效果外,燃料和空气可以在齿形结构的作用下充分掺混,并减小摩擦损失,提高了燃烧的稳定性、完全性和效率,相比于不具有齿形结构的结构,还减轻了旋流器的重量。 At the same time, the outlet end of the outlet section of the undulating structure has a toothed structure, when the inner and outer sides of the cyclone were introduced into the fuel and air, in addition to the above-described effect swirling injection, the fuel and air can be under the action of the toothed structure sufficiently blended and reduced friction losses, improved combustion stability, efficiency and completeness, as compared to the structure having no tooth structure, also reduces the weight of the cyclone. 由径向对称的第一曲线和第二曲线组成的波浪形截面曲线,可以使斜流通道内的气流流场速率更加均匀,有利于进一步提高燃烧的稳定性、完全性和效率。 Wavy curves radially symmetric cross-section of the first and second curves composed of airflow field rate can be made within the helical flow channel more uniformly conducive to further improve combustion stability, efficiency and completeness. 通过调节波浪形结构波浪形截面曲线的扭转角度,可以改变反应流体沿圆周方向旋转运动的轨迹,反应流体流场速率随之变化,以便更好地实现火焰燃烧速率与反应流体流场速率的匹配。 By adjusting the twist angle of the wavy cross-sectional configuration curved undulations, the reaction may vary fluid trajectory of rotational movement in the circumferential direction, the reaction rate of change with a fluid flow field, in order to achieve better matching the rate of combustion reaction rate of a fluid flow field .

[0061]以上所述的具体实施例,对本发明的目的、技术方案和有益效果进行了进一步详细说明,所应理解的是,以上所述仅为本发明的具体实施例而已,并不用于限制本发明,凡在本发明的精神和原则之内,所做的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。 Specific Example [0061] above, the objectives, technical solutions, and beneficial effects of the present invention will be further described in detail, it should be understood that the above descriptions are merely embodiments of the present invention, but not intended to limit the present invention, within the spirit and principle of the present invention, any modifications, equivalent replacements, improvements, etc., should be included within the scope of the present invention.

Claims (10)

1.一种兼具旋流、喷射与掺混作用的旋流器,其特征在于,包括:进口段和出口段; 所述进口段沿轴向逐渐过渡至出口段,所述出口段由多个波浪形结构沿周向排列而成,所述波浪形结构的内外两侧形成斜流通道(2),所述波浪形结构的出口端(3)具有齿形结构。 A swirl of both injection and mixing action of the cyclone, characterized by comprising: inlet and outlet sections; axially of the inlet section to the outlet section of a gradual transition, said plurality of outlet section a wave-shaped structure arrayed in the circumferential direction, forms a tapered flow channel (2), the outlet end (3) of the undulating structure of the inner and outer sides of the wave shaped configuration having a toothed structure.
2.如权利要求1所述的旋流器,其特征在于,所述波浪形结构沿轴向不同位置处的波浪形截面曲线具有相同形状,所述不同位置处的波浪形截面曲线的扭转角度沿下游方向逐渐增大,沿轴向所有位置处的波浪形截面曲线形成波浪形结构的曲面(8),所述波浪形结构的曲面内外两侧形成斜流通道(2)。 2. The swirler according to claim 1 torsional angle curve wavy cross section at said different positions, characterized in that the wave-shaped cross section at the wave-shaped curved configuration in the axial direction in different positions with the same shape, gradually increases in the downstream direction, a curved surface (8) of the undulating structure along wavy profile curve at all axial positions, form oblique flow channel (2) on both sides of the inner and outer surface of the undulating structure.
3.如权利要求1所述的旋流器,其特征在于,所述齿形结构为单齿结构、双齿结构或多齿结构。 The cyclone as claimed in claim 1, characterized in that the toothed structure is a monodentate, bidentate or multidentate structure.
4.如权利要求1所述的旋流器,其特征在于,所述齿形结构的轮廓为正弦波形、三角形、四边形或带倒角的四边形。 4. A cyclone according to claim 1, characterized in that the contour of the tooth structure is sinusoidal, triangular, quadrangular, or quadrangular with chamfered.
5.如权利要求2所述的旋流器,其特征在于,所述进口段的进口(I)具有圆形截面曲线,所述圆形截面曲线的每一段圆弧沿轴向逐渐过渡至所述出口段的一个波浪形结构。 5. A cyclone according to claim 2, wherein said inlet (I) having a circular cross section of the inlet curve, a circular arc of each of the circular cross section in the axial direction to the gradual transition curve a wavy configuration of said outlet section.
6.如权利要求2所述的旋流器,其特征在于,所述不同位置处的波浪形截面曲线的扭转角度沿下游方向按照线性分布规律逐渐增大。 6. The swirler according to claim 2, wherein the twist angle of the wavy profile curve at the different positions is gradually increased in a linear distribution in the downstream direction.
7.如权利要求6所述的旋流器,其特征在于,所述不同位置处的波浪形截面曲线的扭转角度为H*/HXE,其中,H为旋流器的轴向高度,E为波浪形结构出口端的波浪形截面曲线的扭转角度,H*为不同位置处的波浪形截面曲线的轴向高度。 7. The swirler according to claim 6, wherein the twist angle of the wavy profile curve at different locations of the H * / HXE, where, H is the axial height of the cyclone, E is twist angle profile curve undulating structure of the outlet end of the wave-shaped, H * is an axial cross-sectional height of wavy curves at different locations.
8.如权利要求7所述的旋流器,其特征在于,所述波浪形结构的波浪形截面曲线与内切圆和外切圆相切,其包括第一曲线和第二曲线,所述第一曲线由所述内切圆的边缘径线(oa)和对称径线(oc)、内切圆的圆弧(ac)和外切圆的圆弧(j I)围成,所述内切圆的圆弧(ac)和外切圆的圆弧(jl)被等分径线(ob)等分,所述第一曲线包括第一圆弧(ah)、第一直线(hi)和第二圆弧(ij),所述第一圆弧(ah)与内切圆和等分径线(ob)相切,第一直线与等分径线(ob)重合,所述第二圆弧(ij)与外切圆和等分径线(ob)相切,第二曲线与第一曲线关于对称径线(oa)对称。 8. The swirler according to claim 7, wherein the wavy cross-sectional configuration of a wavy curve inscribed circle and circumscribed circle tangent, comprising a first and second curves, the a first curved edge radial line (OA) of the inscribed circle and the radial line of symmetry (OC), the inscribed circle arc (ac) and the circumscribed circle arc (j I) surrounded by the inner inscribed circle arc (ac) and the circumscribed circle arc (JL) is aliquoted radial line (OB) aliquot of the first curve comprises a first arc (AH), a first straight line (hi) and a second arc (ij of), said first arc (ah) and the inscribed circle diameters and aliquots (OB) tangent to the first line and the radial line aliquot (OB) overlap, said first two arcs (ij) and the circumscribed circle diameters and aliquots (OB) tangent to the first curve and second curve symmetrical radial line (OA) of symmetry.
9.如权利要求8所述的旋流器,其特征在于,所述第一圆弧(ah)的半径rl=Rl/(l/sinB+ 1),其中,Rl为内切圆半径,B为边缘径线(oa)与等分径线(ob)的夹角;所述第二圆弧(ij)的半径r2 = R2/(l/sinC-l),其中,R2为外切圆半径,C为等分径线(ob)与对称径线(oc)的夹角。 9. The cyclone as claimed in claim 8, wherein said first arc (ah) of radius rl = Rl / (l / sinB + 1), wherein, Rl is the radius of the inscribed circle, B is diameter wire edge angle (OA) and aliquots radial line (OB); a radius of said second arc (ij) is r2 = R2 / (l / sinC-l), wherein, R2 is the radius of the circumscribed circle, C is the angle between the radial line aliquots (OB) and the radial line of symmetry (OC) of.
10.—种喷射装置,其特征在于,包括:权利要求1至9中任一项权利要求所述的旋流器、内层圆筒(9)和外层圆筒(10),所述旋流器设置于内层圆筒(9)和外层圆筒(10)之间。 10.- species ejecting apparatus comprising: 1 to 9 of the claims claim swirler inner cylinder (9) and an outer cylinder (10), said rotating disposed in the inner cylindrical flow (9) and an outer cylinder (10) between.
CN201610371831.9A 2016-05-30 A kind of cyclone having both eddy flow, injection and blending effect CN106016358B (en)

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