CN110529879A - Two-phase fuel nozzle - Google Patents
Two-phase fuel nozzle Download PDFInfo
- Publication number
- CN110529879A CN110529879A CN201910698400.7A CN201910698400A CN110529879A CN 110529879 A CN110529879 A CN 110529879A CN 201910698400 A CN201910698400 A CN 201910698400A CN 110529879 A CN110529879 A CN 110529879A
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- Prior art keywords
- runner
- fuel
- nozzle
- air
- seal
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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
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
- F23R3/12—Air inlet arrangements for primary air inducing a vortex
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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
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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
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00012—Details of sealing devices
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles For Spraying Of Liquid Fuel (AREA)
Abstract
The invention discloses a kind of two-phase fuel nozzles, it include: nozzle body, liquid fuel runner, auxiliary air runner and gaseous fuel runner are equipped in nozzle body, liquid fuel runner, auxiliary air runner and gaseous fuel runner are successively laid from the inside to the outside in concentric circles, and the influent stream end of the gentle fluid fuel runner of auxiliary air runner is connected to the lateral wall of nozzle body respectively, the influent stream end of liquid fuel runner is connected with gas-liquid sealing component, and the influent stream end of liquid fuel runner is connected to by gas-liquid sealing component with the end face at nozzle body influent stream end.Fuel atomizer and air cyclone are equipped in the ejection end of nozzle body, fuel atomizer is connected to the stream end that goes out of liquid fuel runner, air cyclone is connected to the stream end that goes out of auxiliary air runner, so that assisted atomization air forms eddy flow in air cyclone to be further atomized the liquid fuel sprayed by fuel atomizer, the end face of nozzle body ejection end is connected to the stream end that goes out of gaseous fuel runner.
Description
Technical field
The present invention relates to technical field of gas turbine, particularly, are related to a kind of two-phase fuel nozzle.
Background technique
Existing gas turbine, aero-derived gas turbine made of especially being improved as aero-engine, mainly with natural gas and
Fuel oil is using medium, i.e. natural gas and fuel oil can be sprayed into the combustion chamber of gas turbine respectively, fired simultaneously by a fuel nozzle
Assisted atomization air loop is also set up in material nozzle to supply assisted atomization air to fuel oil and carry out assisted atomization.
Since fuel oil temperature is generally at 20 DEG C or so, and the assisted atomization air themperature come out by compressor is about at 300 DEG C
Left and right, be sealed between the flow path of the two big temperature difference it is particularly difficult, if without good sealing, be easy to happen sealing ring fail
The problem of leading to fuel oil cracking, coking under the high temperature air effect of leakage, and then blocking oil circuit；On the other hand, such gas-liquid
Two-phase fuel nozzle configuration is complicated, and is mainly made and formed by rough forging or cast blank part, production difficulty and cost of manufacture
It is high.
Summary of the invention
The present invention provides a kind of two-phase fuel nozzles, easy to solve high temperature air existing for existing two-phase fuel nozzle
Leakage leads to liquid fuel cracking, coking, and then blocks oil circuit and two-phase fuel nozzle configuration is complicated, cost of manufacture is high technology
Problem.
The technical solution adopted by the invention is as follows:
A kind of two-phase fuel nozzle, comprising: the nozzle body for being connected with installation casing, interior be equipped with of nozzle body are used for
The liquid fuel runner of draining fluids fuel, the auxiliary air runner for draining assisted atomization air and for drain gas combustion
The gaseous fuel runner of material, liquid fuel runner, auxiliary air runner and gaseous fuel runner in concentric circles from the inside to the outside successively
It lays, and the influent stream end of the gentle fluid fuel runner of auxiliary air runner is connected to the lateral wall of nozzle body respectively, liquid fuel
The influent stream end of runner is communicated with the gas-liquid sealing structure for preventing the influent stream end of liquid fuel runner to be connected to auxiliary air runner
The influent stream end of part, liquid fuel runner is connected to by gas-liquid sealing component with the end face at nozzle body influent stream end；Nozzle body
Fuel atomizer and air cyclone are equipped in ejection end, fuel atomizer is connected to the stream end that goes out of liquid fuel runner, will
It being sprayed into air cyclone after the liquid fuel atomization of liquid, air cyclone is connected to the stream end that goes out of auxiliary air runner, with
Assisted atomization air is set to form eddy flow between the spout of fuel atomizer and the spout of air cyclone to be further atomized by firing
The liquid fuel that oil fogger sprays, and the liquid fuel after further atomization is sprayed into combustion chamber, nozzle body ejection end
End face is connected to the stream end that goes out of gaseous fuel runner, so that gaseous fuel sprays into combustion chamber.
Further, nozzle body includes the core bar that both ends are connected to and axially extend, and is set in outside core bar and in sky
The welding cylinder group of heart tubular；Core bar is located in the axis hole of welding cylinder group and the internal channel of core bar constitutes liquid fuel runner, core bar
First end and weld cylinder group first end axis hole inner wall hold out against, the second end of core bar is recessed for installing fuel atomizer
Installation cavity；Circular passage between core bar and welding cylinder group axis hole constitutes auxiliary air runner 201, welds and also sets in cylinder group
There are the gaseous fuel runner being located on outside its axis hole, and the influent stream of the flow inlet of auxiliary air runner 201 and gaseous fuel runner
Mouth is opened in respectively on the side wall of welding cylinder group；Gas-liquid sealing component is located in the axis hole of welding cylinder group and the first end with core bar
Be connected, with the gap between sealing core bar first end and welding cylinder group shaft hole inner wall, prevent the influent stream end of liquid fuel runner with
The influent stream end of auxiliary air runner is connected to.
Further, gas-liquid sealing component includes logical oil seal screw and the first seal for sealing, the second sealing
Part and third sealing element；Logical oil seal screw be along axially through hollow screw, the screw rod of logical oil seal screw fires by liquid
The influent stream end in stream road is connected to liquid fuel runner after protruding into core bar and connect with the inner thread of core bar, leads to oil seal screw
Screw head and weld cylinder group first end axis hole inner wall hold out against；First seal is set in liquid fuel runner and is located at screw rod
End face and liquid fuel runner between step, prevent liquid fuel in liquid fuel runner to be used to form radial seal
By the gap leakage between screw rod and liquid fuel runner；Second seal is installed in the outer step of core bar first end endface
On, first axis sealing is used to form with the gap between sealing core bar first end outer wall and welding cylinder group inner wall；Third sealing
Part is installed in the outer step at screw head inner face, is used to form the second axial seal to seal the outer wall of screw head and welding cylinder group
Gap between inner wall.
Further, first seal and second seal are the metallic packing ring that section is C-shaped；Third sealing element
For O-ring seal.
Further, gas-liquid sealing component further includes the seal cartridge for sealing, seal cartridge be installed on screw rod and
It is held out against with the inner wall of welding cylinder group, and seal cartridge is clamped between core bar first end end face and screw head end face；Seal cartridge
The air channel of outer wall equipped with indent and in a ring, welding cylinder group are equipped with the intercommunicating pore for being connected to air channel and atmosphere, with
Enter atmosphere in air channel and then makes the two sides point of the two sides of first seal, the two sides of second seal and third sealing element
It Xing Cheng not pressure difference.
Further, fuel atomizer includes the atomization chamber body of hollow tubular, and atomization chamber body is coaxially laid with core bar, and mist
Change the sealing bulge loop of the periphery wall spirogyrate of chamber body circlewise, the first end for being atomized chamber body protrudes into installation sky by the second end of core bar
It is intracavitary, and the end face of sealing bulge loop and core bar second end end face are welded and fixed to seal installation cavity；It is atomized chamber body first end
Side wall is equipped with the first flow-in hole of perforation, and the first flow-in hole is for entering the liquid fuel in installation cavity in spray chamber body
And eddy flow is formed to be atomized；It is atomized the sealing being welded in the axis hole of chamber body first end for sealing atomization chamber body first end
Body, atomization chamber body second end are connected with for its liquid fuel after atomization to be sprayed into the first jet in air cyclone
Body.
Further, air cyclone is coaxially laid in hollow cylinder shape and with fuel atomizer, outside air cyclone
The connection bulge loop of ring wall spirogyrate circlewise, connection bulge loop are fixed with the inner wall for welding cylinder group second end end face；Fuel-oil atmozation
The ejection end of device is projecting axially into air cyclone, and the side wall of air cyclone is equipped with the second flow-in hole of perforation, and second
The stream end that goes out of flow-in hole and auxiliary air runner be connected to so that assisted atomization air enter air cyclone it is interior and formed eddy flow with
Further it is atomized the liquid fuel sprayed by fuel atomizer.
Further, welding cylinder group includes the nozzle cylinder part, equal inflator and nozzle barrel for setting gradually and being connected along axial direction, spray
Mouth cylinder part, equal inflator and nozzle barrel are the hollow cylinder of both ends connection；The axis hole and nozzle of the axis hole of nozzle cylinder part, equal inflator
The axis hole of cylinder connects to form auxiliary air runner, and the flow inlet of auxiliary air runner is set on the side wall of nozzle barrel；Gas
Fuel flow channel is laid in simultaneously in nozzle cylinder part, equal inflator and nozzle barrel, and the flow inlet of gaseous fuel runner is set to nozzle
On the side wall of cylinder；Air cyclone is set in the axis hole of nozzle cylinder part second end.
Further, gaseous fuel runner include the entrance being laid in nozzle barrel, the transition that is laid in equal inflator
Section and the outlet flow section being laid in nozzle cylinder part；Equal inflator include set gradually and be connected extending portion, the first connection pan portion and
Second connection pan portion, extending portion are protruded by the first end of nozzle cylinder part in the axis hole of nozzle cylinder part, the end face of the first connection pan portion
With nozzle cylinder part first end end face contact and be welded and fixed, changeover portion perforation the first connection pan portion setting；The second end of nozzle barrel
It is set with and is connected in pan portion in the first connection pan portion and second, and the outer wall for connecting pan portion with first respectively and the second terminal pad
The outer wall in portion is welded and fixed, and the import of entrance is set on the outer wall of nozzle barrel, and the outlet of entrance is set to nozzle barrel
On the end face at two ends.
Further, nozzle cylinder part includes the inner cylinder being set in outside core bar, the outer cylinder and second nozzle that are set in outside inner cylinder
Body；The extending portion of equal inflator is protruded into inner cylinder by the first end of inner cylinder, and the first connection pan portion of equal inflator is welded and fixed with outer cylinder；
Annular channel between outer cylinder and inner cylinder constitutes the outlet flow section of gaseous fuel runner；Second nozzle body respectively with inner barrel and outer barrel
Second end is connected, and second nozzle body is equipped with and is connected to the combustion for spraying into combustion chamber outward for gaseous fuel with gaseous fuel runner
Gas blowout mouth.
The invention has the following advantages:
In two-phase fuel nozzle of the invention, although liquid fuel runner and auxiliary air runner are laid in concentric circles,
Since the influent stream end of liquid fuel runner is communicated with gas-liquid sealing component, gas-liquid sealing component is for preventing liquid fuel runner
Influent stream end is connected to auxiliary air runner, and then not by the high temperature assisted atomization air in the auxiliary air runner of compressor supply
It can leak in liquid fuel runner, so that liquid fuel in liquid fuel runner will not be caused to split under high temperature air effect
Solution, coking, and then oil circuit is blocked, solve the problems, such as high temperature air and isolating seal of the low temperature fuel oil in fuel nozzle；The present invention
Two-phase fuel nozzle in, due to liquid fuel runner, auxiliary air runner and gaseous fuel runner in concentric circles from the inside to the outside
It successively lays, so can make the structure of fuel nozzle integrated as much as possible, reduces the geometric dimension of fuel nozzle, make fuel nozzle
Structure is simple, compact, rationally distributed, reduces the complexity of product structure, saves fuel nozzle replacement, maintenance time, and drop
Low cost of manufacture；And the shape in air cyclone under the action of air cyclone of the assisted atomization air in auxiliary air runner
At eddy flow, it is further atomized the fuel oil sprayed by fuel atomizer, makes it under extremely low fuel flow rate (or even close), remains to
Good drop atomizing effect is obtained, so that fuel nozzle of the invention can allow liquid fuel runner by arbitrarily low fuel
Ratio supplies fuel oil to combustion chamber, in the case where the gas turbine energy (electric energy, thermal energy) exports non-stop situation, to carry out two kinds of combustions
The bumpless transfer of material enhances the adaptability to fuel environment.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the section view schematic view of the front view of the two-phase fuel nozzle of the preferred embodiment of the present invention；
Fig. 2 is the right side structural representation of Fig. 1.
Marginal data
10, core bar；101, liquid fuel runner；102, installation cavity；20, cylinder group is welded；201, auxiliary air runner；
202, gaseous fuel runner；203, intercommunicating pore；21, nozzle cylinder part；211, inner cylinder；212, outer cylinder；213, second nozzle body；
2130, combustion gas spout；22, equal inflator；23, nozzle barrel；30, gas-liquid sealing component；31, lead to oil seal screw；32, the first sealing
Part；33, second seal；34, third sealing element；35, seal cartridge；350, air channel；40, fuel atomizer；41, spray chamber
Body；410, bulge loop is sealed；411, the first flow-in hole；42, seal；43, first jet body；50, air cyclone；501, second
Flow-in hole.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited by following and
The multitude of different ways of covering is implemented.
Referring to Fig.1, the preferred embodiment of the present invention provides a kind of two-phase fuel nozzle, comprising: is used for and installation casing
Connected nozzle body, nozzle body is interior to be equipped with the liquid fuel runner 101 for draining fluids fuel, assists mist for draining
The auxiliary air runner 201 and gaseous fuel runner 202 for draining gaseous fuel for changing air, it is liquid fuel runner 101, auxiliary
Air flow channel 201 and gaseous fuel runner 202 is helped successively to lay from the inside to the outside in concentric circles, and auxiliary air runner 201 is gentle
The influent stream end of fluid fuel runner 202 is connected to the lateral wall of nozzle body respectively, and the influent stream end of liquid fuel runner 101 is connected with
Gas-liquid sealing component 30 for preventing the influent stream end of liquid fuel runner 101 to be connected to auxiliary air runner 201, liquid fuel
The influent stream end of runner 101 is connected to by gas-liquid sealing component 30 with the end face at nozzle body influent stream end.The ejection end of nozzle body
Interior to be equipped with fuel atomizer 40 and air cyclone 50, fuel atomizer 40 is connected to the stream end that goes out of liquid fuel runner 101, with
It will be sprayed into air cyclone 50 after the liquid fuel atomization of liquid, the stream out of air cyclone 50 and auxiliary air runner 201
End connection so that assisted atomization air formed between the spout of fuel atomizer 40 and the spout of air cyclone 50 eddy flow with into
One step is atomized the liquid fuel sprayed by fuel atomizer 40, and the liquid fuel after further atomization is sprayed into combustion chamber, spray
The end face of mouth ontology ejection end is connected to the stream end that goes out of gaseous fuel runner 202, so that gaseous fuel sprays into combustion chamber.
When two-phase fuel nozzle of the invention works, the liquid fuel of exterior line supply is first by nozzle body influent stream end
Flow inlet on end face enters in liquid fuel runner 101, then enters fuel spray by the stream end that goes out of liquid fuel runner 101 again
Change device 40, and sprays into air cyclone 50 after being atomized under the action of fuel atomizer 40；Meanwhile the auxiliary mist of compressor supply
Change air to be entered in auxiliary air runner 201 by the flow inlet on nozzle body side wall first, then again by auxiliary air runner
The 201 stream end that goes out enters in air cyclone 50, and forms eddy flow under the action of air cyclone 50, will be by fuel-oil atmozation
The liquid fuel that device 40 sprays sprays into combustion chamber after being further atomized；And the gaseous fuel of exterior line supply is first by nozzle sheet
Flow inlet on body sidewall enters in gaseous fuel runner 202, then straight by the jet port on nozzle body ejection end end face again
It connects and sprays into combustion chamber.
In two-phase fuel nozzle of the invention, although liquid fuel runner 101 and auxiliary air runner 201 are in concentric circles cloth
If gas-liquid sealing component 30 is for preventing liquid but since the influent stream end of liquid fuel runner 101 is communicated with gas-liquid sealing component 30
The influent stream end of fluid fuel runner 101 is connected to auxiliary air runner 201, and then the auxiliary air runner 201 supplied by compressor
In high temperature assisted atomization air will not leak in liquid fuel runner 101, to will not cause in liquid fuel runner 101
Liquid fuel cracking, coking under high temperature air effect, and then oil circuit is blocked, it solves high temperature air and low temperature fuel oil and is sprayed in fuel
Isolating seal problem in mouth；In two-phase fuel nozzle of the invention, due to liquid fuel runner 101, auxiliary air runner 201
And gaseous fuel runner 202 is successively laid from the inside to the outside in concentric circles, so the structure of fuel nozzle can be made integrated as much as possible,
The geometric dimension for reducing fuel nozzle, keeps fuel nozzle configuration simple, compact, rationally distributed, reduces the complicated journey of product structure
Degree saves fuel nozzle replacement, maintenance time, and reduces cost of manufacture；And the assisted atomization air in auxiliary air runner 201
Eddy flow is formed in air cyclone 50 under the action of air cyclone 50, further atomization is sprayed by fuel atomizer 40
Fuel oil makes it under extremely low fuel flow rate (or even close to 0), remains to obtain good drop atomizing effect, thus of the invention
Fuel nozzle can allow liquid fuel runner 101 by arbitrarily low fuel ratio to combustion chamber supply fuel oil, in combustion gas
The turbine energy (electric energy, thermal energy) exports in non-stop situation, carries out the bumpless transfer of two kinds of fuel, enhances to fuel environment
Adaptability.
Optionally, as shown in Figure 1, nozzle body includes the core bar 10 that both ends are connected to and axially extend, and it is set in core
Bar 10 is outer and is in the welding cylinder group 20 of hollow tubular.Core bar 10 is located in the axis hole of welding cylinder group 20 and the internal channel structure of core bar 10
At liquid fuel runner 101, the first end of core bar 10 and the inner wall of welding 20 first end axis hole of cylinder group are held out against, to prevent liquid fuel
The influent stream end of runner 101 is connected to auxiliary air runner 201, and the second end of core bar 10 is recessed for installing fuel atomizer
40 installation cavity 102.Circular passage between core bar 10 and welding 20 axis hole of cylinder group constitutes auxiliary air runner 201, welding
The gaseous fuel runner 202 being located on outside its axis hole, and the flow inlet and gas of auxiliary air runner 201 are additionally provided in cylinder group 20
The flow inlet of fuel flow channel 202 is opened in respectively on the side wall of welding cylinder group 20.Gas-liquid sealing component 30 is located at welding cylinder group 20
Axis hole in and be connected with the first end of core bar 10, between 10 first end of sealing core bar and welding 20 shaft hole inner wall of cylinder group
Gap prevents the influent stream end of liquid fuel runner 101 to be connected to the influent stream end of auxiliary air runner 201.
In the specific embodiment of this optinal plan, in conjunction with shown in Fig. 2, gas-liquid sealing component 30 includes logical oil seal screw
31 and for sealing first seal 32, second seal 33 and third sealing element 34.Logical oil seal screw 31 is along axial direction
The hollow screw of perforation, the screw rod of logical oil seal screw 31 by the influent stream end of liquid fuel runner 101 protrude into after core bar 10 with liquid
Fluid fuel runner 101, which is connected to, simultaneously connect with the inner thread of core bar 10, is led to the screw head of oil seal screw 31 and is welded cylinder group 20 the
The inner wall of one end axis hole is held out against, and is connected to prevent the influent stream end of liquid fuel runner 101 with auxiliary air runner 201.First sealing
Part 32 is set in the end face and liquid fuel runner 101 in liquid fuel runner 101 and being located at screw rod between step, and first is close
Sealing 32, which is used to form radial seal, prevents the liquid fuel in liquid fuel runner 101 by screw rod and liquid fuel runner 101
Between gap leakage.Second seal 33 is installed in the outer step of 10 first end endface of core bar, is used to form first axle
To sealing with the gap between 10 first end outer wall of sealing core bar and welding 20 inner wall of cylinder group.Third sealing element 34 is installed in screw head
In outer step at inner face, the second axial seal is used to form to seal between the outer wall of screw head and welding 20 inner wall of cylinder group
Gap.Second seal 33, third sealing element 34 and 32 three of first seal cooperatively form triple seal, with sealing core bar 10
Gap between the outer wall of first end and welding cylinder group first end shaft hole inner wall, the outer wall for sealing logical 31 screw head of oil seal screw with
Weld the gap between 20 first end shaft hole inner wall of cylinder group and seal logical 31 screw rod of oil seal screw and liquid fuel runner 101 into
The gap between the inner wall of end is flowed, prevents the high temperature assisted atomization air in auxiliary air runner 201 from being leaked to by three gap
In liquid fuel runner 101.
Further, first seal 32 and second seal 33 are the metallic packing ring that section is C-shaped, mainly
Using the pressure difference of high-pressure side and low-pressure side, the inside of " C " type is acted on, the adhesive force being added between sealing element and conduit wall,
Improve sealing effect.Third sealing element 34 is O-ring seal, the more easy-tolerated liquid fuel of the sealing ring of mainly rubber material
Corrosion.
Preferably, as shown in Figure 1, gas-liquid sealing component 30 further includes the seal cartridge 35 for sealing, seal cartridge 35
It is installed on screw rod and is held out against with the inner wall of welding cylinder group 20, and seal cartridge 35 is clamped in 10 first end end face of core bar and screw head
Between end face, seal cartridge 35 is used to seal between the screw rod of logical oil seal screw 31 and welding 20 first end shaft hole inner wall of cylinder group
Gap, prevent the high temperature assisted atomization air in auxiliary air runner 201 from leaking to liquid fuel runner 101 by the gap
It is interior.The air channel 350 of the outer wall of seal cartridge 35 equipped with indent and in a ring, welding cylinder group 20 is equipped with ventilates for being connected to
The intercommunicating pore 203 of slot 350 and atmosphere, intercommunicating pore 203 is for entering atmosphere in air channel 350 and then making first seal 32
The two sides of two sides, the two sides of second seal 33 and third sealing element 34 are respectively formed pressure difference, so that first seal 32,
Two sealing elements 33 and third sealing element 34 obtain good sealing performance respectively, even and if then have a small amount of high temperature air leakage,
Due to first seal 32, second seal 33 and the good sealing performance of third sealing element 34, the leakage high temperature air is not yet
It can leak in liquid fuel runner 101, cause liquid fuel cracking, coking, and then block oil circuit.
Optionally, as shown in Figure 1, fuel atomizer 40 includes the atomization chamber body 41 of hollow tubular, chamber body 41 and core are atomized
Bar 10 is coaxially laid, and is atomized the sealing bulge loop 410 of the periphery wall spirogyrate of chamber body 41 circlewise, is atomized the first end of chamber body 41
It is protruded into installation cavity 102 by the second end of core bar 10, and the end face for sealing bulge loop 410 and the welding of 10 second end end face of core bar are admittedly
Determine to seal installation cavity 102.The side wall for being atomized 41 first end of chamber body is equipped with the first flow-in hole 411 of perforation, the first influent stream
Hole 411 is for entering the liquid fuel in installation cavity 102 in atomization chamber body 41 and forming eddy flow to be atomized.It is atomized chamber body 41
The seal 42 for sealing atomization 41 first end of chamber body is welded in the axis hole of first end, atomization 41 second end of chamber body connects
It is connected to for its liquid fuel after atomization to be sprayed into the first jet body 43 in air cyclone 50.When work, liquid combustion
Liquid fuel in stream road 101 is entered in installation cavity 102 by the stream end that goes out of liquid fuel runner 101 first, is then existed again
Enter in the spray chamber of atomization chamber body 41 under the action of first flow-in hole 411 and forms eddy flow to be atomized, finally in spray chamber
It is sprayed into air cyclone 50 by first jet body 43 again.
Preferably, the quantity of the first flow-in hole 411 is multiple, circumferential direction of multiple first flow-in holes 411 along atomization chamber body 41
Uniform intervals are arranged in atomization chamber body 41, and each first flow-in hole 411 is to be justified on the basis of the outer circle of spray chamber along the benchmark
Liquid fuel in installation cavity 102 is introduced spray chamber and is formed in spray chamber by the tangential hole that round tangential direction extends
Swirling flow atomizing.
Optionally, as shown in Figure 1, air cyclone 50 in hollow cylinder shape and with fuel atomizer 40 it is coaxial lay, sky
The connection bulge loop of the external annulus spirogyrate of cyclonic current device 50 circlewise, connection bulge loop and the inner wall for welding 20 second end end face of cylinder group
Face is fixed.The ejection end of fuel atomizer 40 is projecting axially into air cyclone 50, and the side wall of air cyclone 50 is equipped with
Second flow-in hole 501 of perforation, the second flow-in hole 501 is connected to the stream end that goes out of auxiliary air runner 201, so that assisted atomization is empty
Gas enters in air cyclone 50 and forms eddy flow to be further atomized the liquid fuel sprayed by fuel atomizer 40.Work
When, auxiliary air runner 201 goes out the assisted atomization air flowed in end and enters air cyclone under the action of the second flow-in hole 501
Form eddy flow in 50 and in air cyclone 50 so that the spout of the ejection end of fuel atomizer 40 and air cyclone 50 it
Between form eddy flow field, and then make after being further atomized by the liquid fuel that fuel atomizer 40 sprays, then by air cyclone 50
Spout spray into combustion chamber in.
Preferably, as shown in Figure 1, the quantity of the second flow-in hole 501 be it is multiple, multiple second flow-in holes 501 along air revolve
The circumferential uniform intervals of stream device 50 are arranged on air cyclone 50, and each second flow-in hole 501 is with air cyclone 50
Justify the tangential hole or tangential slot extended along the tangential direction of the basic circle on the basis of inner hole circle, it will be in auxiliary air runner 201
Assisted atomization air into air cyclone 50 in.
Optionally, as shown in Figure 1, welding cylinder group 20 includes the nozzle cylinder part 21 for setting gradually and being connected along axial direction, gas
Cylinder 22 and nozzle barrel 23, nozzle cylinder part 21, equal inflator 22 and nozzle barrel 23 are the hollow cylinder of both ends connection.Nozzle cylinder part 21
Axis hole, the axis hole of equal inflator 22 and the axis hole of nozzle barrel 23 connect to form auxiliary air runner 201, and auxiliary air runner
201 flow inlet is set on the side wall of nozzle barrel 23.Gaseous fuel runner 202 is laid in nozzle cylinder part 21, equal inflator simultaneously
22 and nozzle barrel 23 in, and the flow inlet of gaseous fuel runner 202 is set on the side wall of nozzle barrel 23.Air cyclone 50 is set
It is placed in the axis hole of 21 second end of nozzle cylinder part.
In the specific embodiment of this optinal plan, as shown in Figure 1, gaseous fuel runner 202 includes being laid in nozzle barrel 23
Interior entrance, the changeover portion being laid in equal inflator 22 and the outlet flow section being laid in nozzle cylinder part 21.Equal inflator 22 includes
Set gradually and be connected extending portion, first connection pan portion and second connection pan portion, extending portion by nozzle cylinder part 21 first end
It protrudes into the axis hole of nozzle cylinder part 21, the end face of the first connection pan portion and 21 first end end face contact of nozzle cylinder part and welding are admittedly
It is fixed, changeover portion perforation the first connection pan portion setting.The second end of nozzle barrel 23 is set with to be connected in the first connection pan portion and second
It connects in pan portion, and the outer wall for connecting pan portion with first respectively and the outer wall of the second connection pan portion are welded and fixed, the import of entrance
It is set on the outer wall of nozzle barrel 23, the outlet of entrance is set on the end face of 23 second end of nozzle barrel.
In the specific embodiment of this optinal plan, as shown in Figure 1, nozzle cylinder part 21 includes the inner cylinder being set in outside core bar 10
211, the outer cylinder 212 and second nozzle body 213 being set in outside inner cylinder 211.The extending portion of equal inflator 22 by inner cylinder 211 first end
It protrudes into inner cylinder 211, the first connection pan portion of equal inflator 22 is welded and fixed with outer cylinder 212.Between outer cylinder 212 and inner cylinder 211
The outlet flow section of annular channel composition gaseous fuel runner 202.Second nozzle body 213 respectively with inner cylinder 211 and outer cylinder 212 second
End is connected, and second nozzle body 213 is equipped with and is connected to gaseous fuel runner 202 so that gaseous fuel sprays into combustion chamber outward
Combustion gas spout 2130.
In the present invention, welding cylinder group 20 includes the nozzle cylinder part 21 for setting gradually and being connected along axial direction, equal inflator 22 and spray
Mouth cylinder 23, equal inflator 22 include set gradually and be connected extending portion, first connection pan portion and second connection pan portion, extending portion by
The first end of nozzle cylinder part 21 protrudes into the axis hole of nozzle cylinder part 21, the end face of the first connection pan portion and 21 first end of nozzle cylinder part
End face contact is simultaneously welded and fixed, changeover portion perforation the first connection pan portion setting.The second end of nozzle barrel 23 is set in first
It connects in pan portion and the second connection pan portion, and the outer wall welding of the outer wall for connecting pan portion with first respectively and the second connection pan portion is solid
Fixed, nozzle cylinder part 21 includes the inner cylinder 211 being set in outside core bar 10, the outer cylinder 212 and second nozzle body that are set in outside inner cylinder 211
213.The extending portion of equal inflator 22 is protruded into inner cylinder 211 by the first end of inner cylinder 211, the first connection pan portion of equal inflator 22 and outer
Cylinder 212 is welded and fixed, and second nozzle body 213 is connected with the second end of inner cylinder 211 and outer cylinder 212 respectively, that is, welds cylinder group 20
This kind of structure setting makes entire fuel nozzle and cylindrical bar machine add-on type can be used, to save rough forging, casting hair
The manufacturing cost of base, improves the manufacture efficiency of fuel nozzle, and reduces the labor intensity of producer.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of two-phase fuel nozzle characterized by comprising
Nozzle body for being connected with installation casing, the interior liquid fuel being equipped with for draining fluids fuel of the nozzle body
Runner (101), the auxiliary air runner (201) for draining assisted atomization air and the gaseous fuel for draining gaseous fuel
Runner (202), the liquid fuel runner (101), the auxiliary air runner (201) and the gaseous fuel runner (202)
It is successively laid from the inside to the outside in concentric circles, and the influent stream of the auxiliary air runner (201) and the gaseous fuel runner (202)
End is connected to the lateral wall of the nozzle body respectively, and the influent stream end of the liquid fuel runner (101) is communicated with for preventing
The gas-liquid sealing component (30) that the influent stream end of the liquid fuel runner (101) is connected to the auxiliary air runner (201), institute
The influent stream end for stating liquid fuel runner (101) passes through the end face of the gas-liquid sealing component (30) and nozzle body influent stream end
Connection；
Fuel atomizer (40) and air cyclone (50), the fuel atomizer are equipped in the ejection end of the nozzle body
(40) it is connected to the stream end that goes out of the liquid fuel runner (101), the air will be sprayed into after the liquid fuel atomization of liquid
In cyclone (50), the air cyclone (50) is connected to the stream end that goes out of the auxiliary air runner (201), so that auxiliary mist
Change air and forms eddy flow between the spout of the fuel atomizer (40) and the spout of the air cyclone (50) with further
It is atomized the liquid fuel sprayed by the fuel atomizer (40), and the liquid fuel after further atomization is sprayed into combustion chamber,
The end face of the nozzle body ejection end is connected to the stream end that goes out of the gaseous fuel runner (202), so that gaseous fuel sprays into
The combustion chamber.
2. two-phase fuel nozzle according to claim 1, which is characterized in that
The nozzle body includes the core bar (10) that both ends are connected to and axially extend, and is set in the core bar (10) outside and is in
The welding cylinder group (20) of hollow tubular；
The core bar (10) is located in the axis hole of welding cylinder group (20) and the internal channel of the core bar (10) constitutes the liquid
Fluid fuel runner (101), the first end of the core bar (10) and the inner wall of described welding cylinder group (20) first end axis hole are held out against, institute
The second end for stating core bar (10) is recessed installation cavity (102) for installing the fuel atomizer (40)；
Circular passage between the core bar (10) and described welding cylinder group (20) axis hole constitutes the auxiliary air runner 201,
The gaseous fuel runner (202) being located on outside its axis hole, and the auxiliary air are additionally provided in welding cylinder group (20)
The flow inlet of the flow inlet of runner 201 and the gaseous fuel runner (202) is opened in the side of welding cylinder group (20) respectively
On wall；
The gas-liquid sealing component (30) is located in the axis hole of welding cylinder group (20) and the first end with the core bar (10)
It is connected, to seal the gap between the core bar (10) first end and described welding cylinder group (20) shaft hole inner wall, prevents the liquid
The influent stream end of fluid fuel runner (101) is connected to the influent stream end of the auxiliary air runner (201).
3. two-phase fuel nozzle according to claim 2, which is characterized in that
The gas-liquid sealing component (30) includes logical oil seal screw (31) and the first seal (32), second close for sealing
Sealing (33) and third sealing element (34)；
The logical oil seal screw (31) be along axially through hollow screw, the screw rod of the logical oil seal screw (31) is by institute
State liquid fuel runner (101) influent stream end protrude into the core bar (10) be connected to afterwards with the liquid fuel runner (101) and with
The inner thread of the core bar (10) connects, the screw head of the logical oil seal screw (31) and welding cylinder group (20) first end
The inner wall of axis hole is held out against；
The first seal (32) be set in the liquid fuel runner (101) and be located at the end face of the screw rod with it is described
Between liquid fuel runner (101) interior step, prevent the liquid in liquid fuel runner (101) from firing to be used to form radial seal
Material is revealed by the gap between the screw rod and the liquid fuel runner (101)；
The second seal (33) is installed in the outer step of the core bar (10) first end endface, is used to form first axle
The gap between the core bar (10) first end outer wall and described welding cylinder group (20) inner wall is sealed to sealing；
The third sealing element (34) is installed in the outer step at the screw head inner face, be used to form the second axial seal with
Seal the gap between the outer wall of the screw head and described welding cylinder group (20) inner wall.
4. two-phase fuel nozzle according to claim 3, which is characterized in that
The first seal (32) and the second seal (33) are the metallic packing ring that section is C-shaped；
The third sealing element (34) is O-ring seal.
5. two-phase fuel nozzle according to claim 3, which is characterized in that
The gas-liquid sealing component (30) further includes the seal cartridge (35) for sealing, and the seal cartridge (35) is installed in institute
It states on screw rod and is held out against with the inner wall of welding cylinder group (20), and the seal cartridge (35) is clamped in the core bar (10) the
Between one end end face and the screw head end face；
The outer wall of the seal cartridge (35) is equipped with indent and air channel (350) in a ring, on the welding cylinder group (20)
Equipped with the intercommunicating pore (203) for being connected to the air channel (350) and atmosphere, so that atmosphere enters in the air channel (350)
And then make the two sides of the first seal (32), the two sides of the second seal (33) and the third sealing element (34)
Two sides are respectively formed pressure difference.
6. two-phase fuel nozzle according to claim 2, which is characterized in that
The fuel atomizer (40) includes the atomization chamber body (41) of hollow tubular, the atomization chamber body (41) and the core bar
(10) coaxial to lay, and the sealing bulge loop (410) of the periphery wall spirogyrate of atomization chamber body (41) circlewise, the spray chamber
The first end of body (41) is protruded into the installation cavity (102) by the second end of the core bar (10), and the sealing bulge loop
(410) end face and the core bar (10) second end end face is welded and fixed to seal the installation cavity (102)；
The side wall of described atomization chamber body (41) first end is equipped with the first flow-in hole (411) of perforation, first flow-in hole
(411) for entering the liquid fuel in the installation cavity (102) in the atomization chamber body (41) and forming eddy flow with mist
Change；
It is welded in the axis hole of described atomization chamber body (41) first end for sealing described atomization chamber body (41) first end
Seal (42), described atomization chamber body (41) second end are connected with for its liquid fuel after atomization to be sprayed into the air
First jet body (43) in cyclone (50).
7. two-phase fuel nozzle according to claim 2, which is characterized in that
The air cyclone (50) in hollow cylinder shape and with the fuel atomizer (40) it is coaxial laying, the air swirl
The connection bulge loop of the external annulus spirogyrate of device (50) circlewise, the connection bulge loop and welding cylinder group (20) the second end end face
Inner wall fix；
The ejection end of the fuel atomizer (40) is projecting axially into the air cyclone (50), the air cyclone
(50) side wall is equipped with the second flow-in hole (501) of perforation, second flow-in hole (501) and the auxiliary air runner
(201) the stream end that goes out is connected to, so that assisted atomization air enters in the air cyclone (50) and forms eddy flow with further
It is atomized the liquid fuel sprayed by the fuel atomizer (40).
8. two-phase fuel nozzle according to claim 2, which is characterized in that
Welding cylinder group (20) includes the nozzle cylinder part (21), equal inflator (22) and nozzle barrel for setting gradually and being connected along axial direction
(23), the nozzle cylinder part (21), the equal inflator (22) and the nozzle barrel (23) are the hollow cylinder of both ends connection；
The axis hole of the axis hole of the nozzle cylinder part (21), the axis hole of the equal inflator (22) and the nozzle barrel (23) connects to be formed
The auxiliary air runner (201), and the flow inlet of the auxiliary air runner (201) is set to the side of the nozzle barrel (23)
On wall；
The gaseous fuel runner (202) is laid in the nozzle cylinder part (21), the equal inflator (22) and the nozzle simultaneously
In cylinder (23), and the flow inlet of the gaseous fuel runner (202) is set on the side wall of the nozzle barrel (23)；
The air cyclone (50) is set in the axis hole of nozzle cylinder part (21) second end.
9. two-phase fuel nozzle according to claim 8, which is characterized in that
The gaseous fuel runner (202) includes the entrance being laid in the nozzle barrel (23), is laid in the equal inflator
(22) changeover portion in and the outlet flow section being laid in the nozzle cylinder part (21)；
The equal inflator (22) includes extending portion, the first connection pan portion and the second connection pan portion for setting gradually and being connected, described
Extending portion is protruded by the first end of the nozzle cylinder part (21) in the axis hole of the nozzle cylinder part (21), the first connection pan portion
End face and nozzle cylinder part (21) the first end end face contact and be welded and fixed, the changeover portion penetrates through first terminal pad
Portion's setting；
The second end of the nozzle barrel (23) is set with to be connected in pan portion in the first connection pan portion and described second, and point
The outer wall of the outer wall and the second connection pan portion that do not connect pan portion with described first is welded and fixed, and the import of the entrance is set
It is placed on the outer wall of the nozzle barrel (23), the outlet of the entrance is set to the end face of the nozzle barrel (23) second end
On.
10. two-phase fuel nozzle according to claim 9, which is characterized in that
The nozzle cylinder part (21) includes the inner cylinder (211) being set in the core bar (10) outside, is set in the inner cylinder (211) outside
Outer cylinder (212) and second nozzle body (213)；
The extending portion of the equal inflator (22) is protruded into the inner cylinder (211) by the first end of the inner cylinder (211), the gas
First connection pan portion of cylinder (22) is welded and fixed with the outer cylinder (212)；
Annular channel between the outer cylinder (212) and the inner cylinder (211) constitutes flowing out for the gaseous fuel runner (202)
Section；
The second nozzle body (213) is connected with the second end of the inner cylinder (211) and the outer cylinder (212) respectively, and described
Second nozzle body (213) is equipped with and is connected to the gaseous fuel runner (202) so that gaseous fuel sprays into the burning outward
The combustion gas spout (2130) of room.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698400.7A CN110529879B (en) | 2019-07-31 | 2019-07-31 | Two-phase fuel nozzle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910698400.7A CN110529879B (en) | 2019-07-31 | 2019-07-31 | Two-phase fuel nozzle |
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| CN110529879A true CN110529879A (en) | 2019-12-03 |
| CN110529879B CN110529879B (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910698400.7A Active CN110529879B (en) | 2019-07-31 | 2019-07-31 | Two-phase fuel nozzle |
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| CN113048512A (en) * | 2019-12-27 | 2021-06-29 | 中国航发商用航空发动机有限责任公司 | Fuel grading control assembly, fuel system, gas turbine, override valve and fuel grading control method |
| CN115013204A (en) * | 2022-06-20 | 2022-09-06 | 江苏大学 | Dual-fuel vortex nozzle |
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| CN208918718U (en) * | 2018-10-23 | 2019-05-31 | 潍柴西港新能源动力有限公司 | Gas-engine mixer |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110529879B (en) | 2020-12-25 |
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