CN107366929A - Nozzle with expansion shape profile cyclone - Google Patents
Nozzle with expansion shape profile cyclone Download PDFInfo
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- CN107366929A CN107366929A CN201710597634.3A CN201710597634A CN107366929A CN 107366929 A CN107366929 A CN 107366929A CN 201710597634 A CN201710597634 A CN 201710597634A CN 107366929 A CN107366929 A CN 107366929A
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- Prior art keywords
- cyclone
- nozzle
- profile
- contour line
- expansion shape
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
Abstract
The invention discloses a kind of nozzle with expansion shape profile cyclone, including：Nozzle inner walls；Outer nozzle wall；And cyclone, it is located between nozzle inner walls and outer nozzle wall, its profile is expansion shape.By the way that the contour line of the axial cross section of swirler blades is arranged to expand shape, runner between the outer nozzle wall and nozzle inner walls of cyclone is also configured as expanding shape, runner between outer nozzle wall and middle cylinder is also configured as expanding shape, above divergent channel enhances the mixing effect of fluid inside and outside cyclone, simultaneously can be when the windup-degree of cyclone be very big, also smooth curved surface is obtained, reaches good mixing effect.
Description
Technical field
The invention belongs to burner technical field, is related to a kind of nozzle with expansion shape profile cyclone.
Background technology
The features such as gas turbine is due to unit small volume and output power, is widely used in electric power, aviation, petrochemical industry
Etc. industry.Due to energy crisis and environmental degradation, be badly in need of development high-efficiency cleaning combustion chamber, it is desirable to combustion chamber have igniting it is reliable,
The characteristics such as flameholding, efficiency high and low emission.Current China problem of environmental pollution is extremely serious, therefore it is clear to develop gas turbine
Clean combustion technology is very urgent.
Gas turbine manufacturer has developed a variety of clean-burning technologies at present, and such as poor premixed combustion technology, dilute phase premixes
Pre-evaporation technique, oil-poor direct injection technology and catalytic combustion technology etc., although these technologies can effectively reduce the row of pollutant
The problem of putting, but all suffering from combustion instability and this part burner structure are complicated, parts are more.
Injection apparatus, such as nozzle, are the important components of combustion gas trochus, and its performance largely decides burning
Efficiency, security and stability.Cyclone is as the core component in injection apparatus, flow direction, the blending effect of its structure convection body
Fruit has a significant impact, and then burning is produced a very large impact, and existing cyclone is performed poor in terms of mixing effect, and structure
Complexity, thus need badly and propose a kind of to lift mixing effect, hydrocyclone structure simple in construction.
The content of the invention
(1) technical problems to be solved
It is set forth above at least partly to solve present disclose provides a kind of nozzle with expansion shape profile cyclone
Technical problem.
(2) technical scheme
According to an aspect of this disclosure, there is provided a kind of nozzle with expansion shape profile cyclone, including：In nozzle
Wall；Outer nozzle wall；And cyclone, it is located between nozzle inner walls and outer nozzle wall, its profile is expansion shape.
In some embodiments of the present disclosure, the tract of cyclone and outer nozzle wall is expansion segment；Under nozzle inner walls
Trip section is converging portion；The Upstream section of cyclone, nozzle inner walls and outer nozzle wall is flat segments；Nozzle has flat shape on the whole
The tract of Upstream section and expansion shape.
In some embodiments of the present disclosure, formed between the Upstream section of nozzle inner walls and the Upstream section of outer nozzle wall flat
Straight channel；Divergent channel is formed between the tract of nozzle inner walls and the tract of outer nozzle wall.
In some embodiments of the present disclosure, the contour line of the expansion segment of cyclone includes：On the inside of cyclone contour line and
Cyclone outboard wheel profile, what is formed between cyclone inner side contour line and cyclone outboard wheel profile is shaped as expansion shape, edge
The area of section flaring of the downstream direction cyclone.
In some embodiments of the present disclosure, the cyclone also includes：The profile on the inside of the port of export of cyclone, cyclone
Line and cyclone outboard wheel profile are flat segments contour line, and the length of the flat segments contour line meets：Between cyclone height
Between 1%~10%.
In some embodiments of the present disclosure, the length of flat segments contour line is the 5% of cyclone height.
In some embodiments of the present disclosure, the nozzle with expansion shape profile cyclone also includes：Middle cylinder, insertion
In cyclone, in radial direction, the blade of cyclone is divided into inner ring and outer rings two parts；Wherein, the stream of the inner ring of cyclone
Body enters middle cylinder and mutually blended.
In some embodiments of the present disclosure, the contour line of middle cylinder is middle cylinder contour line, the middle cylinder wheel
Profile is convergent contour, and middle cylinder and cyclone outboard wheel are formed between the middle cylinder contour line and cyclone outboard wheel profile
Divergent channel between exterior feature, being shaped as of divergent channel between the middle cylinder and cyclone lateral profile expand shape.
In some embodiments of the present disclosure, the nozzle with expansion shape profile cyclone also includes：Mesh plate, it is arranged at
The exit of the middle cylinder, the axial direction in hole and the cyclone is axially in parallel on the mesh plate.
In some embodiments of the present disclosure, the profile of cyclone meets：It is located at identical circumferential position in one space periodic
The shape for the import and export curve put is as follows：Entrance section curve is circular arc, and outlet curve is " several " font.
(3) beneficial effect
It can be seen from the above technical proposal that the disclosure provide have expansion shape profile cyclone nozzle, have with
Lower beneficial effect：
The contour line of the axial cross section of swirler blades is arranged to expand shape, the outer nozzle wall and nozzle inner walls of cyclone
Between runner be also configured as expand shape, the runner between outer nozzle wall and middle cylinder be also configured as expand shape, the above expansion
Shape runner enhances the mixing effect of fluid inside and outside cyclone, at the same can when the windup-degree of cyclone is very big,
Smooth curved surface is obtained, reaches good mixing effect.
Brief description of the drawings
Fig. 1 is the semi-cutaway for the nozzle for having expansion shape profile cyclone according to the embodiment of the present disclosure.
Fig. 2 is the appearance profile structural representation according to the expansion shape of embodiment of the present disclosure cyclone.
Fig. 3 is the course of work schematic diagram for the cyclone for having expansion shape profile according to the embodiment of the present disclosure.
Fig. 4 is the generation method flow chart for the nozzle for having expansion shape profile cyclone according to the embodiment of the present disclosure.
Fig. 5 A- Fig. 5 E are to be illustrated according to the process of cyclone curved surface of the embodiment of the present disclosure generation with expansion shape profile
Figure.
Fig. 5 A are to be formed directly by the entrance section curve and outlet curve of a cycle according to the embodiment of the present disclosure
The schematic diagram of curved surface.
Fig. 5 B be according to the embodiment of the present disclosure in Fig. 5 A straight curved surface axial location, by several with it is axially vertical
Plane intercept straight curved surface and obtain the schematic diagram of section curved surface.
Fig. 5 C are that the cross section curve according to the embodiment of the present disclosure by Fig. 5 B along the circumferential direction revolves together with outlet curve
The schematic diagram of torsion curve is obtained after turning certain angle.
Fig. 5 D connect into curved surface for the torsion curve according to the embodiment of the present disclosure by Fig. 5 C and obtain cyclone a cycle
Curved surface schematic diagram.
Fig. 5 E are the curved surface circumferentially array of the cyclone a cycle according to the embodiment of the present disclosure by Fig. 5 D
Obtain the schematic diagram of cyclone curved surface.
Fig. 6 is to be tied according to the nozzle with expansion shape profile cyclone three-dimensional of the embodiment of the present disclosure with middle cylinder
Structure schematic diagram.
Fig. 6 A are the middle cylinder contour line of hydrocyclone structure and cyclone contour line according to embodiment of the present disclosure Fig. 6
Between formed expansion shape passage schematic diagram.
Fig. 6 B are that the middle cylinder outlet of the hydrocyclone structure according to the embodiment of the present disclosure in Fig. 6 sets showing for mesh plate
It is intended to.
Compared with Fig. 7 is the cyclone according to the embodiment of the present disclosure with Fig. 2, the eddy flow of flat segments outlet profile line is accompanied with
Device structural representation.
【Symbol description】
110- cyclones；
111- cyclone fluid inside entrances；112- cyclone lateral fluid entrances；
120- nozzle entrances；
121- nozzle inner walls；122- outer nozzle walls；
123- jet expansions；
The straight runner of 130- nozzle entrances；The divergent channel of 133- jet expansions；
Contour line on the inside of 210- cyclones；220- cyclone outboard wheel profiles；
The divergent channel of 231- cyclones；
The radial motion of 310- cyclone lateral fluids；
The radial motion of 320- cyclone fluid insides；
The entrance section curve of the straight curved surface of 401- cyclone a cycles；
The straight curved surfaces of 400-；
The outlet curve of the straight curved surface of 402- cyclone a cycles；
411- first cross section curve of straight curved surface；412- second cross section curve of straight curved surface；
The 3rd cross section curve of the straight curved surfaces of 413-；
First postrotational curve of cross section curve of the straight curved surfaces of 421-；
Second postrotational curve of cross section curve of the straight curved surfaces of 422-；
The 3rd postrotational curve of cross section curve of the straight curved surfaces of 423-；
The postrotational curve of outlet curve of the straight curved surfaces of 424-；
500- middle cylinders；510- middle cylinder contour lines；
511- mesh plates；
Divergent channel between 521- middle cylinders and cyclone lateral profile；
Flat exit contour line on the outside of 610- cyclones；
Flat exit contour line on the inside of 620- cyclones.
Embodiment
Present disclose provides a kind of nozzle with expansion shape profile cyclone, by the axial cross section of the blade of cyclone
Contour line is arranged to expand shape, the runner between outer nozzle wall and nozzle inner walls is also configured as to expand shape, outer nozzle wall is with
Between runner between cylinder be also configured as expanding shape, above divergent channel enhances the blending effect of fluid inside and outside cyclone
Fruit, while can also obtain smooth curved surface when the windup-degree of cyclone is very big, reach good mixing effect.
For the purpose, technical scheme and advantage of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the disclosure is further described.
Disclosure one embodiment provides a kind of nozzle with expansion shape profile cyclone.
Fig. 1 is the semi-cutaway for the nozzle for having expansion shape profile cyclone according to the embodiment of the present disclosure；Fig. 2 is according to this public affairs
Open the appearance profile structural representation of the expansion shape of embodiment cyclone.With reference to Fig. 1 and Fig. 2, the disclosure has expansion shape wheel
The nozzle of wide cyclone, including：Cyclone 110；Nozzle inner walls 121, it is arranged at the inner side of cyclone 110；Outer nozzle wall 122, if
It is placed in the outside of cyclone 110；The tract of cyclone 110 and outer nozzle wall 122 is expansion segment, the tract of nozzle inner walls 121
For converging portion, the Upstream section of cyclone 110, nozzle inner walls 121 and outer nozzle wall 122 is flat segments, and nozzle generally forms flat
The Upstream section of straight and the tract of expansion shape.
Nozzle entrance 120 and the nozzle entrance 120 of jet expansion 123 include：Cyclone fluid inside entrance 111, is formed at
Between the Upstream section of nozzle inner walls 121 and the Upstream section of cyclone 110；Cyclone lateral fluid entrance 112, is formed at outside nozzle
Between the Upstream section of wall 122 and the Upstream section of cyclone 110；The straight runner 130 of nozzle entrance, it is formed at the upstream of nozzle inner walls 121
Between section and the Upstream section of outer nozzle wall 122；And the divergent channel 133 of jet expansion, it is formed at the tract of nozzle inner walls 121
Between the tract of outer nozzle wall 122；
Nozzle entrance 120, is arranged at fluid intake, including：Cyclone fluid inside entrance 111, is formed in nozzle
Between the interior sidewall surface of wall 121 and cyclone 110；Cyclone lateral fluid entrance 112, is formed at outer nozzle wall 122 and eddy flow
Between the outer side surface of device 110；Jet expansion 123, is arranged at fluid outlet；The straight runner 130 of nozzle entrance, is arranged at
Between nozzle inner walls 121 and outer nozzle wall 122, at nozzle entrance 120；And the divergent channel 133 of jet expansion, if
It is placed between nozzle inner walls 121 and outer nozzle wall 122, at jet expansion 123.
Each part of the nozzle with expansion shape profile cyclone of the present embodiment is illustrated below.
In the present embodiment, cyclone 110 has the appearance profile of expansion shape, reference picture 2, and the implication of expansion shape profile is：
What is formed on the inside of the cyclone of cyclone 110 between contour line 210 and cyclone outboard wheel profile 220 is shaped as expansion shape,
Sectional area at corresponding nozzle outlet 123 is more than the sectional area at nozzle entrance 120；Wherein, contour line 210 is on the inside of cyclone
The tangent line of the interior sidewall surface of cyclone 110；Cyclone outboard wheel profile 220 is the tangent line of the outer side surface of cyclone 110.
In the present embodiment, cyclone fluid inside entrance 111 is annular, and cyclone lateral fluid entrance 112 is also circle
Annular.
In the present embodiment, expansion shape is also form between contour line 210 and cyclone outboard wheel profile 220 on the inside of cyclone
Runner, and be arranged in the divergent channel of nozzle inner walls 121 and the formation of outer nozzle wall 122.
Nozzle entrance 120 is different with cyclone cross-sectional sizes corresponding to jet expansion 123, is cut corresponding to jet expansion 123
Face area is more than the area of section of nozzle entrance 120, therefore can form the divergent channel 133 of jet expansion in nozzle exit.
The course of work to the present embodiment below with the cyclone of expansion shape profile is introduced.
Fig. 3 is the course of work schematic diagram for the cyclone for having expansion shape profile according to the embodiment of the present disclosure.Refer to figure
3, while fluid is axially moved in cyclone, the motion along radial direction can be also carried out, cyclone lateral fluid
The direction of radial motion 310 is the sensing center of circle；The direction of the radial motion 320 of cyclone fluid inside is the remote center of circle, thus
It can be seen that the radial motion of inside and outside two side liquid adjacent on cyclone is in opposite direction, this Strong shear motion can strengthen eddy flow
The side liquid of device two jet expansion blending, therefore, it is necessary to by contour line 210 on the inside of cyclone and cyclone outboard wheel profile
Runner between 220 is arranged to expand shape, can keep this and be moved along the Strong shear of radial direction；If in cyclone,
Runner between outer contour is flat shape or convergent contour, will be unable to be formed the radial motion of cyclone medial and lateral fluid, thus
Also the Strong shear motion of radial direction can not be formed, this is unfavorable in cyclone lateral fluid in the blending of jet expansion.So this public affairs
The cyclone opened is using the structure for expanding shape profile.
In second embodiment of the disclosure, there is provided one kind has the profile rotation of expansion shape as shown in one embodiment
Flow the generation method of the nozzle of device.
Fig. 4 is the generation method flow chart for the nozzle for having expansion shape profile cyclone according to the embodiment of the present disclosure.Such as Fig. 4
Method described, that the disclosure has the nozzle of expansion shape profile cyclone, including：
Step S402：Straight curved surface is obtained by the import and export curve for being located at identical circumferential position in a space periodic, so
Cyclone cross section curve is obtained on straight curved surface afterwards；
The shape of import and export curve in the present embodiment in a space periodic positioned at identical circumferential position meets：Entrance
Cross section curve is circular arc, and outlet curve is " several " font；Import and export curve can directly form straight curved surface, this implementation
The method of acquisition cyclone cross section curve is preferably on straight curved surface in example：It is straight with equidistantly and with axially vertical plane intercepting
Curved surface, obtain the cross section curve of cyclone；
Step S404：Cyclone cross section curve at diverse location is reversed, obtains postrotational cyclone section
Curve；
Preferred windup-degree gradually increases along downstream direction according to the rule of linear distribution in the present embodiment；Its regularity of distribution
Meet：The windup-degree of cyclone cross section curve at diverse location is：H*/H × E, wherein, H is the axial height of cyclone,
E is the windup-degree of cyclone, and H* is the axial height of the cyclone cross section curve at diverse location；
Step S406：Curved surface is formed using postrotational cyclone cross section curve, obtains the curved surface of cyclone a cycle；
Step S408：By the curved surface of cyclone a cycle, circumferentially array obtains cyclone curved surface.
Fig. 5 A- Fig. 5 E are to be illustrated according to the process of cyclone curved surface of the embodiment of the present disclosure generation with expansion shape profile
Figure.Fig. 5 A are to form straight curved surface by the entrance section curve and outlet curve of a cycle according to the embodiment of the present disclosure
Schematic diagram.Fig. 5 B be according to the embodiment of the present disclosure in Fig. 5 A straight curved surface axial location, by several with it is axially vertical
Plane intercept straight curved surface and obtain the schematic diagram of section curved surface.Fig. 5 C are the cross section curve according to the embodiment of the present disclosure by Fig. 5 B
The schematic diagram of torsion curve is obtained after along the circumferential direction being rotated to an angle together with outlet curve.Fig. 5 D are according to the disclosure
Embodiment connects into torsion curve shown in Fig. 5 C in the schematic diagram that curved surface obtains the curved surface of cyclone a cycle.According to Fig. 5 E
By the curved surface of cyclone a cycle shown in Fig. 5 D, circumferentially array obtains showing for cyclone curved surface to the embodiment of the present disclosure
It is intended to.
Fig. 5 A to Fig. 5 E are referred to be illustrated the generation method of cyclone.
Fig. 5 A are referred to, the entrance section curve 401 and cyclone a cycle of the straight curved surface of cyclone a cycle are directly bent
The outlet curve 402 in face is in identical circumferential position, and the entrance section curve 401 of the straight curved surface of cyclone a cycle is circle
Arc, the outlet curve 402 of the straight curved surface of cyclone a cycle is " several " font, can be formed directly by this two curves
Curved surface 400；Refer to Fig. 5 B, respectively in 1/4,1/2 and 3/4 axial location of straight curved surface 400, make three equidistantly and with
Axially vertical plane intercepts straight curved surface 400, obtains three cross section curves --- the straight curved surface of straight 400 axially different position of curved surface
The 3rd first cross section curve 411, second cross section curve 412 of straight curved surface and straight curved surface cross section curve 413；Refer to figure
5C, the circumferentially rotatable certain angle of outlet curve 402 by this three cross section curves together with the straight curved surface of cyclone a cycle
Degree, preferably the anglec of rotation is linear distribution vertically, and such as in the present embodiment, the anglec of rotation of cyclone is 120 °, then straight bent
The anglec of rotation of first cross section curve 411 in face is 30 °, and the anglec of rotation of straight second cross section curve 412 of curved surface is 60 °, directly
The anglec of rotation of the 3rd cross section curve 413 of curved surface is 90 °, the outlet curve 402 of the straight curved surface of cyclone a cycle
The anglec of rotation is 120 °, thus obtains four curves --- the postrotational curve 421 of first cross section curve of straight curved surface, straight curved surface
The postrotational curve 422 of second cross section curve, the 3rd cross section curve of straight curved surface postrotational curve 423, straight curved surface go out
The mouth postrotational curve 424 of cross section curve；Fig. 5 D are referred to, curved surface is made by curve 421,422,423 and 424, just revolved
Flow the curved surface of device a cycle；Fig. 5 E are referred to, by cyclone a cycle curved surface along the circumferential direction array, just obtain cyclone
110 curved surface.Using this method, when the windup-degree of cyclone is very big, it is also possible to obtain smooth curved surface, such as in the implementation
In example, the windup-degree of cyclone is 120 °, and smooth curved surface has been obtained using this method.It is preferred that the axially different position of cyclone
The cross section curve put reverses rule and meets linear distribution --- the windup-degree of the cyclone cross section curve at diverse location be H*/
H × E, wherein, H is the axial height of cyclone, and E is the windup-degree of cyclone, and H* is the cyclone section at diverse location
The axial height of curve.
The 3rd embodiment of the disclosure provides a kind of nozzle with expansion shape profile cyclone.In order to reach briefly
Bright purpose, any technical characteristic for making same application is described all and in this in any of the above-described embodiment, without repeating phase
With narration.
Fig. 6 is to be tied according to the nozzle with expansion shape profile cyclone three-dimensional of the embodiment of the present disclosure with middle cylinder
Structure schematic diagram.Comparison diagram 1, Fig. 5 E and Fig. 6, the nozzle in the 3rd embodiment of the disclosure with expansion shape profile cyclone are compared
For one embodiment, difference is the structure for adding middle cylinder 500, and sets net in the outlet of middle cylinder 500
Orifice plate 511.
There is the nozzle of expansion shape profile cyclone to introduce the 3rd embodiment below.
Fig. 6 is referred to, middle cylinder 500 is inserted in the blade of cyclone 110, in radial direction, by cyclone 110
Blade is divided into inner ring and outer rings two parts, and the inner ring fluid of cyclone 110 enters middle cylinder and mutually blended.
Refer to Fig. 5 A, middle cylinder contour line 510 is convergent contour, such middle cylinder contour line 510 with outside cyclone
The divergent channel 521 formed between side wheel profile 220 between middle cylinder and cyclone lateral profile, this structure can ensure
The outer shroud fluid of cyclone 500 moves in the Strong shear of radial direction, and enhancing cyclone medial and lateral fluid is in jet expansion 123
Blending.
Refer to Fig. 5 B, be also provided with mesh plate 511 in the outlet of middle cylinder 500, on mesh plate 511 axial direction in hole with
Nozzle is axially in parallel, and the fluid that this structure can export middle cylinder 500 keeps being axially moved, and outside middle cylinder 500
The fluid enclosed is rotated, and can improve the tempering nargin of nozzle.
The 4th embodiment of the disclosure provides a kind of nozzle with expansion shape profile cyclone.In order to reach briefly
Bright purpose, any technical characteristic for making same application is described all and in this in any of the above-described embodiment, without repeating phase
With narration.
Compared with Fig. 7 is the cyclone according to the embodiment of the present disclosure with Fig. 2, the eddy flow of flat segments outlet profile line is accompanied with
Device structural representation.Comparison diagram 2 and Fig. 7, the nozzle in the 4th embodiment of the disclosure with expansion shape profile cyclone are compared
For one embodiment, distinguish in the present embodiment cyclone 110 be additionally provided with jet expansion 123 one section it is straight
Outlet profile line.
Refer to Fig. 7, cyclone 110 carries straight outlet profile line, the He of flat exit contour line 610 on the outside of cyclone
It is straight runner between cyclone inner side flat exit contour line 620, such benefit is can to increase swirl strength, but should
The length of flat segments can not be excessive, and otherwise fluid will be unable to be formed the Strong shear motion of radial direction in jet expansion, be unfavorable for eddy flow
The blending of the side liquid of device two, the length of the flat segments are 1%~10% any value (including end points) of cyclone height, preferably
For the 5% of cyclone height.
It should be noted that in accompanying drawing or specification text, the implementation that does not illustrate or describe is affiliated technology
Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, above-mentioned definition to each part and not only limiting
The various concrete structures mentioned in embodiment, shape, those of ordinary skill in the art simply can be changed or replaced to it
Change, such as：
(1) cyclone and nozzle arrangements can also use other constructions, as long as identical function can be completed；
(2) demonstration of the parameter comprising particular value can be provided herein, but these parameters are worth accordingly without being definitely equal to, and
It is that can be similar to analog value in acceptable error margin or design constraint；
(3) direction term mentioned in embodiment, such as " on ", " under ", "front", "rear", "left", "right" etc., only it is ginseng
The direction of accompanying drawing is examined, is not used for limiting the scope of the invention；
(4) consideration that above-described embodiment can be based on design and reliability, the collocation that is mixed with each other uses or and other embodiment
Mix and match uses, i.e., the technical characteristic in different embodiments can freely form more embodiments.
In summary, present disclose provides a kind of nozzle with expansion shape profile cyclone, by the blade of cyclone
The contour line of axial cross section is arranged to expand shape, and the runner between outer nozzle wall and nozzle inner walls is also configured as to expand shape, spray
Runner between mouth outer wall and middle cylinder is also configured as expanding shape, and the structure of above divergent channel is enhanced inside and outside cyclone
The mixing effect of two side liquids, while can also obtain smooth curved surface when the windup-degree of cyclone is very big, reach good
Mixing effect；And middle cylinder can also be set up and flat segments are set in the exit of cyclone, increase swirl strength；
The nozzle with expansion shape profile cyclone is generated using the cyclone generation method of the disclosure, method has generalization, and
The structure of generation is simple.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description to the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The disclosure of shield requires features more more than the feature being expressly recited in each claim.More precisely, such as right
As claim reflects, open aspect is all features less than single embodiment disclosed above.Therefore, it then follows tool
Thus claims of body embodiment are expressly incorporated in the embodiment, wherein the conduct of each claim in itself
The separate embodiments of the disclosure.
Particular embodiments described above, the purpose, technical scheme and beneficial effect of the disclosure are carried out further in detail
Describe in detail bright, should be understood that the specific embodiment that the foregoing is only the disclosure, be not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution and improvements done etc., the guarantor of the disclosure should be included in
Within the scope of shield.
Claims (10)
1. a kind of nozzle with expansion shape profile cyclone, including：
Nozzle inner walls；
Outer nozzle wall；And
Cyclone, it is located between nozzle inner walls and outer nozzle wall, its profile is expansion shape.
2. the nozzle with expansion shape profile cyclone according to claim 1, wherein：
The tract of the cyclone and the outer nozzle wall is expansion segment；
The tract of the nozzle inner walls is converging portion；
The Upstream section of the cyclone, nozzle inner walls and outer nozzle wall is flat segments；
The nozzle has the Upstream section of flat shape and the tract of expansion shape on the whole.
3. the nozzle with expansion shape profile cyclone according to claim 2, wherein：
Straight runner is formed between the Upstream section of the nozzle inner walls and the Upstream section of the outer nozzle wall；
Divergent channel is formed between the tract of the nozzle inner walls and the tract of the outer nozzle wall.
4. the nozzle with expansion shape profile cyclone according to claim 2, wherein, the expansion segment of the cyclone
Contour line includes：
Contour line and cyclone outboard wheel profile on the inside of cyclone, the cyclone inner side contour line and cyclone outboard wheel profile
Between formed be shaped as expand shape, along the area of section flaring of cyclone described in downstream direction.
5. the nozzle with expansion shape profile cyclone according to claim 1, wherein, the cyclone also includes：
Contour line and cyclone outboard wheel profile are flat segments contour line on the inside of the port of export of cyclone, cyclone, described flat
The length of straight section contour line meets：Between the 1%~10% of cyclone height.
6. the nozzle with expansion shape profile cyclone according to claims 5, wherein, the flat segments contour line
Length be the cyclone height 5%.
7. the nozzle with expansion shape profile cyclone according to claim 1, in addition to：
Middle cylinder, insert in the cyclone, in radial direction, the blade of cyclone is divided into inner ring and outer rings two parts；
Wherein, the fluid of the inner ring of the cyclone enters the middle cylinder and mutually blended.
8. the nozzle with expansion shape profile cyclone according to claim 7, wherein, the contour line of the middle cylinder
For middle cylinder contour line, the middle cylinder contour line is convergent contour, the middle cylinder contour line and cyclone outboard wheel profile
Between form the divergent channel between middle cylinder and cyclone lateral profile, between the middle cylinder and cyclone lateral profile
Divergent channel be shaped as expand shape.
9. the nozzle with expansion shape profile cyclone according to claim 7, in addition to：
Mesh plate, is arranged at the exit of the middle cylinder, the axial direction in hole and the axial direction of the cyclone on the mesh plate
It is parallel.
10. the nozzle with expansion shape profile cyclone according to any one of claim 1 to 9, wherein, the cyclone
Entrance section curve positioned at identical circumferential position is circular arc, and outlet curve is " several " font.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710597634.3A CN107366929B (en) | 2017-07-20 | 2017-07-20 | Nozzle with divergent profile swirler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710597634.3A CN107366929B (en) | 2017-07-20 | 2017-07-20 | Nozzle with divergent profile swirler |
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| CN107366929B CN107366929B (en) | 2020-03-17 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111981510A (en) * | 2020-07-31 | 2020-11-24 | 中国航发贵阳发动机设计研究所 | Lobe mixer capable of generating swirling jet flow |
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| EP2930430A1 (en) * | 2014-04-07 | 2015-10-14 | Siemens Aktiengesellschaft | A burner tip and a burner for a gas turbine |
| CN105674263A (en) * | 2016-02-23 | 2016-06-15 | 中国科学院工程热物理研究所 | Nozzle with mixing combustion stabilizing structures, nozzle array and combustor |
| CN106051826A (en) * | 2016-06-12 | 2016-10-26 | 哈尔滨工程大学 | Pyrolysis fuel gas and air rapid mixing device |
| CN106705122A (en) * | 2016-12-09 | 2017-05-24 | 中国科学院工程热物理研究所 | Nozzle with inner and outer mixing zones, nozzle array and burner |
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| US20150159874A1 (en) * | 2013-12-10 | 2015-06-11 | Rolls-Royce Plc | Fuel spray nozzle |
| EP2930430A1 (en) * | 2014-04-07 | 2015-10-14 | Siemens Aktiengesellschaft | A burner tip and a burner for a gas turbine |
| CN105674263A (en) * | 2016-02-23 | 2016-06-15 | 中国科学院工程热物理研究所 | Nozzle with mixing combustion stabilizing structures, nozzle array and combustor |
| CN106051826A (en) * | 2016-06-12 | 2016-10-26 | 哈尔滨工程大学 | Pyrolysis fuel gas and air rapid mixing device |
| CN106705122A (en) * | 2016-12-09 | 2017-05-24 | 中国科学院工程热物理研究所 | Nozzle with inner and outer mixing zones, nozzle array and burner |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111981510A (en) * | 2020-07-31 | 2020-11-24 | 中国航发贵阳发动机设计研究所 | Lobe mixer capable of generating swirling jet flow |
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| CN107366929B (en) | 2020-03-17 |
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