阅读说明：本技术 燃气涡轮发动机燃料歧管阻尼器及动态衰减方法 (Gas turbine engine fuel manifold damper and dynamic attenuation method ) 是由 韩飞 于 2018-04-09 设计创作，主要内容包括：本公开涉及一种用于燃气涡轮发动机的燃料歧管组件。燃料歧管组件限定壁式导管,燃料通过该壁式导管在燃料通道中流动。壁式导管沿着壁式导管的长度限定第一端和与第一端相对的第二端。燃料歧管组件包括出口歧管,燃料喷嘴附接到该出口歧管。燃料歧管组件包括联接到燃料歧管组件的壁式导管的阻尼器组件。该阻尼器组件包括从壁式导管延伸的壁式管。阻尼器组件进一步包括在其中限定阻尼器腔的壁式外罩。阻尼器腔与限定在壁式管内的阻尼器通道流体连通,并且阻尼器通道与燃料通道流体连通。(This disclosure relates to a kind of fuel manifold component for gas-turbine unit.Fuel manifold component limits walled conduit, and fuel is flowed in fuel channel by the walled conduit.Walled conduit limits first end and the second end opposite with first end along the length of walled conduit.Fuel manifold component includes outlet manifold, and fuel nozzle is attached to the outlet manifold.Fuel manifold component includes the damper assembly for being connected to the walled conduit of fuel manifold component.The damper assembly includes the wall type pipe extended from walled conduit.Damper assembly further comprises in the wall type outer cover for wherein limiting damper chamber.Damper chamber and the damper passage being limited in wall type pipe, and damper channel is connected to fuel channel fluid.)

1. a kind of fuel manifold component for gas-turbine unit, the fuel manifold component limits walled conduit, fuel It is flowed in fuel channel by the walled conduit, the walled conduit limits first end along the length of the walled conduit The second end opposite with the first end, wherein the fuel manifold component includes outlet manifold, fuel nozzle is attached to institute State outlet manifold, which is characterized in that the fuel manifold component includes:

Damper assembly, the damper assembly are attached to the walled conduit of the fuel manifold component, the damper Component includes the wall type pipe extended from the walled conduit, and wherein the damper assembly is included therein restriction damper The wall type outer cover of chamber, wherein the damper chamber and the damper passage being limited in the wall type pipe, and its Described in damper channel be connected to the fuel channel fluid.

2. fuel manifold component according to claim 1, which is characterized in that the fuel manifold component further comprises:

Jumper pipe, the jumper pipe are attached to the wall type outer cover of the damper assembly, wherein the jumper pipe is coupled To the second end of the walled conduit, and wherein the damper assembly is attached to described the of the walled conduit One end.

3. fuel manifold component according to claim 1, which is characterized in that wherein the wall type outer cover limits the damping The general cylindrical space of device chamber.

4. fuel manifold component according to claim 1, which is characterized in that wherein the fuel manifold component limits arrangement The first damper assembly at the first end of the walled conduit and the second end for being arranged in the walled conduit Second damper assembly at place.

5. fuel manifold component according to claim 4, which is characterized in that the fuel manifold component further comprises:

Connecting tube, the connecting tube are attached to each of first damper assembly and second damper assembly wall Formula outer cover.

6. fuel manifold component according to claim 5, which is characterized in that wherein the damper assembly is limited from described The cross-sectional area that substantially reduces of the damper chamber to the wall type pipe.

7. fuel manifold component according to claim 5, which is characterized in that wherein the damper assembly is limited from described The cross-sectional area that substantially reduces of the damper chamber to the connecting tube.

8. fuel manifold component according to claim 5, which is characterized in that the cross section face that wherein connecting tube limits Product is less than the cross-sectional area of the damper chamber of the damper assembly.

9. fuel manifold component according to claim 1, which is characterized in that wherein the damper assembly is in the wall type The cross-sectional area limited at pipe is less than the cross-sectional area of the damper chamber.

10. fuel manifold component according to claim 5, which is characterized in that the wherein wall of the damper assembly Formula outer cover limits bending section with approximate 90 degree or smaller acute angle.

11. fuel manifold component according to claim 5, which is characterized in that wherein the wall type pipe and/or the connection Pipe limits bending section with approximate 90 degree or bigger of acute angle.

12. fuel manifold component according to claim 5, which is characterized in that wherein the fuel manifold component is further Include:

Wall type manifold, the wall type manifold extend from the connecting tube, wherein the wall type manifold limits manifold cavity.

13. a kind of method of the pressure oscillation at fuel manifold component for gas-turbine unit of decaying, which is characterized in that The described method includes:

The damper chamber extended from damper channel, the fuel channel in the damper channel and the fuel manifold component are provided It is in fluid communication；

A part of fluid is provided from the fuel channel by the damper chamber；With

Flow a fuel through the fuel channel.

14. according to the method for claim 13, which is characterized in that the method further includes:

Adjust the flow or pressure of the fuel by the fuel channel.

15. according to the method for claim 13, which is characterized in that wherein provide damper chamber and be included in the fuel channel First end at the damper chamber and the damper channel are set.

16. according to the method for claim 15, which is characterized in that the method further includes:

Second damper chamber is provided at the second end opposite with the first end of the fuel channel and the second damper is logical Road.

17. according to the method for claim 16, which is characterized in that the method further includes:

It provides via connecting tube from the damper chamber to the fluid communication of the second damper chamber.

18. according to the method for claim 13, which is characterized in that the method further includes:

The damper chamber and the damper channel are limited to Helmholtz's damper, wherein the damper chamber and/or The volume and/or area in the damper channel are based at least partially on the combustion during one or more engine operating states Expect the target frequency of manifold.

19. according to the method for claim 13, which is characterized in that the method further includes:

The damper chamber from the second end of the fuel channel to from the first end that the fuel channel is arranged in is provided It is in fluid communication.

20. according to the method for claim 19, which is characterized in that wherein provide from the second end of the fuel channel to institute The fluid communication for stating the damper chamber at the first end of fuel channel is included in offer counteracting at the damper chamber Pressure or flow.

Technical field

The present subject matter relates generally to gas turbine engine fuel manifold components.More specifically, this theme is related to for combustion gas The damping structure of turbine engine fuel manifold component.

Background technique

Gas-turbine unit generally includes burning block, and the burning block is from the fuel discrimination for being connected to multiple fuel nozzles Tube assembly receives fuel.Due to the fuel flow rate or pressure by fuel manifold component, the pressure oscillation from burning block, And/or dynamic (such as the vibration usually from engine, noise or harmonic wave), fuel manifold component can be run in various engines High amplitude dynamic (such as pressure oscillation, vibration, harmonic wave) is undergone under state.For example, engine operating state may include by aviation The landing of engine/circulation of taking off (LTO), or for industry, ship, auxiliary power unit, turboprop or whirlpool Those of similar range restriction of wheel shaft engine configuration.Engine operating state may include usual lower-wattage igniting/ Starting and idle, usual higher-wattage take off and climb mode, and other dynamic regimes therebetween, such as cruise and Into close.When engine is run under these and other various operating statuses, pass through the combustion of fuel manifold component to burning block Expect pressure and changes in flow rate, may cause one or more resonance states, these resonance states may be upset towards burning block Fuel stream and to engine operation have an adverse effect, until and including combustible loss.Unallayed fuel manifold component is dynamic State may also lead to the structural failure of fuel manifold component.

Pressure oscillation typically occurs in the burning block of gas-turbine unit, this is by indoor fuel and the sky of burning Lighting for gas mixture is caused.Although nominal pressure oscillation is the by-product of burning, the increased width of pressure oscillation Degree may be derived from the operation burning block usually under lean-burn condition (such as in order to reduce fire emission), or the fire generated The hot release dynamics of flame/burning unstable state, the whole acoustic states of burning block and the indoor transient state computational fluid dynamics of burning it Between combination.Pressure oscillation typically results in the undesirable high amplitude that fuel manifold component may be traveled in burning block, from Hold pressure oscillation.These pressure oscillations may cause strong single-frequency or multifrequency and dominate sound wave, may pass in burning block Fuel manifold component is broadcast and travels to, so as to cause the vibration in fuel manifold component, this be may cause in fuel manifold component Fuel flow rate or pressure vibrate.The oscillation of fuel flow rate or pressure can travel to fuel nozzle from fuel manifold component And aggravate the pressure oscillation in burning block.Low-frequency sound wave (such as during engine start and/or in low-power to idling During operating status occur those of) and/or the wave (it may occur under other operating statuses) of upper frequency may be decreased The operability nargin of engine can increase external firing noise, vibration or harmonic wave, or flame is caused to lose.Increased pressure Forced oscillation may usually damage burning block or accelerated combustion section, the structure deterioration of fuel manifold component or engine, thus Lead to engine failure or increased engine maintenance cost.

Therefore, it is necessary to a kind of damping structures and method for fuel manifold component, at fuel manifold component of decaying Dynamically, this loss that can reduce operability nargin, noise, vibration or the increase of harmonic wave or are started fuel manifold, burning block The structure deterioration of machine.

Summary of the invention

Aspects and advantages of the present invention will illustrate partly in the following description, or can from description it is clear that Or it can be learnt by practicing the present invention.

This disclosure relates to a kind of fuel manifold component for gas-turbine unit.Fuel manifold component defines wall type Conduit, fuel are flowed in fuel channel by the walled conduit.The walled conduit limits first along the length of walled conduit End and the second end opposite with first end.Fuel manifold component includes outlet manifold, and fuel nozzle is attached to the outlet manifold.Combustion Expect that manifold component includes the damper assembly for being attached to the walled conduit of fuel manifold component.Damper assembly includes leading from wall type The wall type pipe that pipe extends.Damper assembly further comprises in the wall type outer cover for wherein limiting damper chamber.Damper chamber and limit The damper passage being scheduled in wall type pipe, and damper channel is connected to fuel channel fluid.

In one embodiment, fuel manifold component further comprises jumper pipe, which is attached to damper assembly Wall type outer cover.Jumper pipe is attached to the second end of walled conduit, and damper assembly is attached to the of walled conduit One end.

In another embodiment, wall type outer cover defines the general cylindrical space of damper chamber.

In various embodiments, fuel manifold component defines the first damper being arranged at the first end of walled conduit Component and the second damper assembly being arranged at the second end of walled conduit.In one embodiment, fuel manifold component into One step includes connecting tube, which is attached to each wall type outer cover of the first damper assembly and the second damper assembly.In In another embodiment, damper assembly defines the cross-sectional area substantially reduced from damper chamber to wall type pipe.Again In one embodiment, damper assembly defines the cross-sectional area substantially reduced from damper chamber to connecting tube.Another In a embodiment, connecting tube defines the cross-sectional area of the cross-sectional area of the damper chamber less than damper assembly.One In a embodiment, the wall type outer cover of damper assembly limits bending section with approximate 90 degree or smaller acute angle.In another implementation In example, wall type pipe and/or connecting tube are with approximate 90 degree or bigger of acute angle restriction bending section.

In one embodiment, damper assembly defines the cross of the cross-sectional area less than damper chamber at wall type pipe Area of section.

In another embodiment, fuel manifold component further comprises the wall type manifold extended from connecting tube, mesospore Formula manifold limits manifold cavity.

The disclosure is further to the pressure oscillation at a kind of fuel manifold component for gas-turbine unit of decaying Method.This method includes providing the damper chamber extended from damper channel, the damper channel and fuel manifold component The connection of fuel channel fluid；A part of fluid is provided from fuel channel by damper chamber；And flow a fuel through fuel channel.

In one embodiment, this method further comprises adjusting the fuel flow rate or pressure that pass through fuel channel.

In another embodiment, providing damper chamber includes that damper chamber and damper channel are arranged in fuel channel First end.

In various embodiments, this method further comprises providing at the second end opposite with first end of fuel channel Second damper chamber and the second damper channel.In one embodiment, this method further comprise via connecting tube provide from Fluid communication of the damper chamber to the second damper chamber.

In one embodiment, this method further comprises that damper chamber and damper channel are limited to Helmholtz (Helmholtz) damper, wherein the volume and/or area in damper chamber and/or damper channel are based at least partially on The target frequency of fuel manifold during one or more engine operating states.In various embodiments, this method is further Including providing from the second end of fuel channel to the fluid communication for the damper chamber being arranged in from the first end of fuel channel.One In a embodiment, provide from the second end of fuel channel to the fluid communication packet of the damper chamber at the first end of fuel channel The offset pressure or flow provided at damper chamber is provided.

With reference to the following description and the appended claims, be better understood with these and other features of the invention, aspect and Advantage.It is incorporated to and constitutes the drawing illustration of part of specification the embodiment of the present invention, and with for describing to use together Bright the principle of the present invention.

Detailed description of the invention

For those of ordinary skill in the art, with reference to attached drawing, illustrate that of the invention includes its optimal mode in the description The comprehensive and disclosure that is able to achieve, in which:

Fig. 1 is showing for the exemplary gas turbogenerator of the exemplary embodiment comprising fuel manifold component and damper Meaning property viewgraph of cross-section；

Fig. 2 is the exemplary embodiment of the fuel manifold component of engine shown in Fig. 1；

Fig. 3 be include damper assembly shown in Fig. 2 fuel manifold component a part schematic cross-section view Figure；

Fig. 4 is the detailed view of the exemplary embodiment of the fuel manifold component of engine shown in Fig. 1；

Fig. 5 is the exemplary embodiment of another fuel manifold component of engine shown in Fig. 1；

Fig. 6 is the exemplary embodiment of the another fuel manifold component of engine shown in Fig. 1；

Fig. 7 is the detailed view of the another exemplary embodiment of the fuel manifold component of engine shown in Fig. 1；

Fig. 8 is the schematic cross-section view of a part of the fuel manifold component shown in fig. 7 including damper assembly Figure；

Fig. 9 is the detailed view of the another exemplary embodiment of the fuel manifold component of engine shown in Fig. 1；With

Figure 10 is the step of summarizing a kind of dynamic method for the fuel manifold component for gas-turbine unit of decaying Exemplary process diagram.

Reuse in the present description and drawings reference character be intended to indicate that same or similar feature of the invention or Element.

Specific embodiment

With detailed reference to the embodiment of the present invention, one above example is illustrated in the drawings.Each example passes through Bright mode of the invention provides, and is not construed as the limitation present invention.In fact, for those skilled in the art come, Obviously, it without departing from the scope or spirit of the invention, can carry out various modifications in the present invention and modification.Example Such as, the feature as the part diagram of one embodiment or description can be used together with another embodiment, another to generate A embodiment.Therefore, the present invention is directed to cover these modifications come within the scope of the appended claims and their and become Type.

Term " first " used herein, " second " and " third " use in which can be interchanged, by a component with it is another Component distinguishes, and is not intended to indicate the position of single component or importance.

Term " upstream " and " downstream " refer to the relative direction relative to the fluid flowing in fluid route.For example, " on Trip " refers to the direction that fluid flows from this, and " downstream " refers to fluid to the direction of flowing at this.As provided in figure, term " upstream " or " downstream " usually refers respectively to towards " upstream 99 " or towards the direction in " downstream 98 ".

A kind of damper assembly for being attached to fuel manifold component is substantially provided, can decay combustion under engine condition Expect manifold component dynamic.Damper assembly includes wall type pipe, which defines the fuel stream passage with fuel manifold component The damper channel of body connection and the damper chamber limited by the wall type outer cover of damper assembly.The damper generally herein provided The various embodiments of component can change under various engine conditions in fluid flow and/or pressure or when burning dynamic change When Regime during recession (for example, vibration, noise, harmonic wave etc.).In addition, various embodiments provided herein can limit it is substantially compact Encapsulation makes it possible to the installation or real in the overall limited range of gas-turbine unit (such as, but not limited to aero-engine) It applies.

Referring now to the drawings, Fig. 1 is can to send out in conjunction with the exemplary high bypassed turbine fan of the various embodiments of the disclosure The schematic partial cross section side view of motivation 10, referred to herein as " engine 10 ".Although below with reference to turbine wind Fan engine is further described, but the disclosure is generally also applicable to turbomachinery, including turbojet, turbine spiral shell Revolve paddle motor and turbine wheel shaft gas-turbine unit, including peculiar to vessel and Industrial Turbine engine and auxiliary power unit.Such as Fig. 1 Shown, engine 10, which has, extends through longitudinally or axially cener line 12 therein for reference, generally along vertical To direction L.Engine 10 further limits the radial direction R extended from longitudinal center line 12, and surrounds longitudinal center line 12 Circumferential direction C.In general, engine 10 may include fan component 14 and the core-engine that 14 downstream of fan component is arranged in 16。

Core-engine 16 usually may include substantially tubular shape outer housing 18, limit annular entry 20.Outer housing 18 It surrounds or is at least partially formed with serial flow relationship: compressor section, with booster or low pressure (LP) compressor 22, High pressure (HP) compressor 24；Burning block 26；Turbine comprising high pressure (HP) turbine 28, low pressure (LP) turbine 30；And spray Penetrate exhaust nozzle section 32.HP turbine 28 is drivingly connected to HP compressor 24 by high pressure (HP) armature spindle 34.Low pressure (LP) turns LP turbine 30 is drivingly connected to LP compressor 22 by sub- axis 36.LP armature spindle 36 may be also connected to the fan of fan component 14 Axis 38.In a particular embodiment, as shown in Figure 1, LP armature spindle 36 can be by reduction gearing 40 (such as to drive indirectly or tooth Wheel transmission configuration) it is connected to fan shaft 38.In other embodiments, engine 10 can further comprise middle pressure (IP) compressor and The turbine that can be rotated together with middle last item.

As shown in Figure 1, fan component 14 includes multiple fan blade 42, it is attached to fan shaft 38 and from fan shaft 38 extend radially outwardly.Ring-type fan shell or cabin 44 circumferentially about fan component 14 and/or core-engine 16 extremely Few a part.In one embodiment, cabin 44 can pass through multiple circumferentially spaced export orientation wheel blades or 46 phase of pillar Core-engine 16 is supported.In addition, at least part of cabin 44 can extend on the outside of core-engine 16, To limit bypass flow channel 48 between them.

During engine 10 is run, a certain amount of air as shown schematically in arrow 74 passes through cabin 44 and/or wind The association entrance 76 for fanning component 14 enters engine 10.When air 74 passes through fan blade 42, as shown schematically in arrow 78 Portion of air be guided or be directed in bypass flow channel 48, and another part air as shown schematically in arrow 80 It is guided or is directed in LP compressor 22.When air 80 flows through LP compressor 22 and HP compressor 24 towards burning block 26 When, air 80 is gradually compressed.The present compressed air as shown schematically in arrow 82 flows through burning block 26.

Engine 10 includes the fuel manifold component 90 for usually surrounding burning block 26, and the liquid of pressurization or gas are fired Material is transported to burning block 26.Fuel manifold component 90 is attached to the multiple fuel nozzles being arranged by burning block 26, with It delivers fuel into engine 10 and mixes with compressed air 82 and lighted in burning block 26 to generate as arrow 86 shows Burning gases shown in meaning property.

Referring still to Fig. 1, the burning gases 86 generated in burning block 26 flow into HP turbine 28, to make HP armature spindle 34 rotations, to support the operation of HP compressor 24.Then burning gases 86 are directed through LP turbine 30, to make LP rotor Axis 36 rotates, to support the operation of LP compressor 22 and/or the rotation of fan shaft 38.Then burning gases 86 are sent out by core The jet exhaust nozzle segment 32 of motivation 16 is discharged, to provide propulsive thrust.

Referring now to Fig. 2-3, the exemplary implementation of the fuel manifold component 90 on the engine 10 in Fig. 1 is generally provided Example.Fuel manifold component 90 defines that walled conduit 93, fuel are flowed in fuel channel 95 by the walled conduit.Wall type is led Pipe 93 limits first end 91 and the second end 92 opposite with first end 91 along the length of walled conduit 93.Fuel manifold component 90 Including outlet manifold 94, the fuel nozzle of burning block 26 (showing in Fig. 1) is attached to the outlet manifold 94.

Fuel manifold component 90 includes the damper assembly 100 for being attached to the walled conduit 93 of fuel manifold component 90.Resistance Buddhist nun's device assembly 100 includes the wall type pipe 110 extended from walled conduit 93.Damper assembly 100 further comprises wall type outer cover 120, damper chamber 125 is limited in wall type outer cover 120.Damper chamber 125 and the damper channel being limited in wall type pipe 110 115 are in fluid communication.Damper channel 115 and fuel channel 95 are in fluid communication.

The damper assembly 100 for being attached to walled conduit 93 can reduce vibration and the harmonic wave of fuel manifold component 90, should Vibration and harmonic wave are at least partially due to the pressure oscillation in the fuel stream for passing through the fuel channel 95 of walled conduit 93 causes. For example, usually can be in the resistance of damper assembly 100 by the sound wave that the pressure oscillation in the fuel stream in fuel channel 95 generates It is attenuated in Buddhist nun's device channel 115 and/or damper chamber 125.In various embodiments, the high amplitude vibration in damper channel 115 Pressure oscillation or damper channel 115 and fuel at the interface 97 of dissipated wall type pipe 110 and walled conduit 93 is swung to lead to Pressure oscillation at the interface in road 95.Boundary as substantially provided in Fig. 3, at wall type pipe 110 and walled conduit 93 Portion 97 can limit the cross section substantially bigger than the cross section at the wall type pipe 110 between walled conduit 93 and wall type outer cover 120 Area.Further, in various embodiments, the wall type outer cover 120 for limiting damper chamber 125 can limit damper chamber 125 General cylindrical volume.

The size in damper channel 115 can be based at least partially on and damper chamber 125 and the progress of damper assembly 100 The target frequency of decaying or the relevant length diameter ratio of its range (L/D).For example, damper channel 115 is limited from wall type pipe 110 The length started with the interface 97 of wall type pipeline 93.The length in the diameter of wall type pipe 110 and damper channel 115 is respectively at least Partly limited by the target frequency or its range of the pressure oscillation to decay in the damper chamber 125 of acoustic damping device 100.

In various embodiments, damper assembly 100 defines Helmholtz's damper, and wherein damper assembly 100 can The target frequency of the pressure oscillation of decaying or its range can be defined by following equation:

Wherein f is the frequency or range for the pressure oscillation to be decayed；C is sound in fluid (i.e. air or burning gases) Speed；A is the cross-sectional area of the opening in damper channel 115；V is the volume of damper chamber 125；L ' is damper channel 115 Effective length.In various embodiments, effective length is the length in damper channel 115 plus multiplying as commonly understood in the art With the correction coefficient of the diameter of the area in damper channel 115.

Referring now to Figure 4, the exemplary embodiment of the fuel manifold component 90 including damper assembly 100 is substantially provided Detailed view.Embodiment shown in Fig. 4 may be substantially similar to configure about show Fig. 2-3 with the embodiment that describes. But in Fig. 2, damper assembly 100 is arranged on the first end 91 and second of the walled conduit 93 of fuel manifold component 90 Each of end 92 place.The walled conduit 93 of fuel manifold component 90 usually surrounds engine 10 (shown in Fig. 1) circumferentially Direction C extends 360 degree of approximation, and wherein first end 91 and second end 92 are separated and along the circumferential distance phases of walled conduit 93 It is right.In the embodiment substantially provided in Fig. 3, the first damper assembly 111 is arranged at the first end 91 of walled conduit 93, Second damper assembly 112 is arranged at the second end 92 of walled conduit 93.In various embodiments, damper assembly 100 It is arranged at the lower half portion of fuel manifold component 90, such as close to lower dead center.In other various embodiments, each damping Device assembly 100 can limit damper channel 115 or damper chamber 125 of different area or volume or both, be passed through with being directed to The difference of the pressure oscillation of the fuel stream of the fuel channel 95 limited by walled conduit 93 or the frequency range of complementation.

Referring now to Figure 5, another embodiment of fuel manifold component 90 is substantially set and is configured to substantially similar In the embodiment provided about Fig. 2-3.But in Fig. 5, fuel manifold component 90 further comprises jumper pipe 130, jumper pipe 130 are attached to the wall type outer cover 120 of damper assembly 100.In the embodiment shown in fig. 5, jumper pipe 130 is attached to wall type The second end 92 of conduit 93, and damper assembly 100 is attached to first end 91.It should be appreciated that in other embodiments, resistance Buddhist nun's device assembly 100 can be attached to the second end 92 of walled conduit 93, and jumper pipe 130 is attached to first end 91.

In the various embodiments provided about Fig. 5, jumper pipe 130 is provided from the second end 92 of walled conduit 93 to connection To the fluid communication of the damper assembly 100 of first end 91.Jumper pipe 130 defines generally hollow wall type pipe structure.Bridging Pipe 130 can be by reducing the pressure oscillation of the fuel stream in the fuel channel 95 in fuel manifold component 90 come Regime during recession (for example, vibration, harmonic wave etc.).For example, the jumper pipe 130 for being attached to the second end 92 of fuel manifold component 90 can be from wall type It is mentioned at the jumper pipe 130 and/or wall type outer cover 120 of the damper assembly 100 of the reception pressure of first end 91 or flow of conduit 93 For offset pressure or flow.Therefore, when for decaying pressure oscillation or target frequency (such as the fuel channel of walled conduit 93 Fuel flow rate or pressure in 95) when changing with engine operating state, it is attached to the jumper pipe 130 of damper assembly 100 It usually can provide target frequency or the pressure oscillation of the wide scope of the decaying of damper assembly 100.

Referring now to Figure 6, the embodiment of fuel manifold component 90 be substantially set and be configured substantially similar to about The embodiment that Fig. 2-5 is provided.However, fuel manifold component 90 further comprises connecting tube in the embodiment provided in Fig. 5 140, connecting tube 140 is attached to each wall type outer cover 120 of the first damper assembly 111 and the second damper assembly 112.First Damper assembly 111 and the second damper assembly 112 are substantially similar to shown in Fig. 4 and the wall type that is arranged on is led On pipe 93.Connecting tube 140 is further by the generally hollow wall type pipe structure of connecting tube 140 in the first damper assembly 111 And second provide fluid communication between damper assembly 112.

The connecting tube 140 for being attached to the first damper assembly 111 and the second damper assembly 112 can usually provide wide model The target frequency enclosed or pressure oscillation, the first damper assembly 111 and the second damper assembly 112 substantially class in the range It is similar to such each self damping described in jumper pipe 130 that Fig. 5 is substantially provided.

Referring now to Fig. 7-8, another embodiment of fuel manifold component 90 is substantially set and is configured to substantially similar In the embodiment provided about Fig. 2-6.However, in Fig. 7-8, generally speaking, the damper assembly 100 of fuel manifold component 90 Define the cross-sectional area substantially reduced from damper chamber 125 to wall type pipe 110.For example, as shown in figure 8, damper chamber 125 can limit maximum cross section area 126.As shown in the region of wall type outer cover 120 123, damper chamber 125 can be limited The cross-sectional area of the fixed cross-sectional area 127 from maximum cross section area 126 to from wall type pipe 110 substantially reduced.In this way, In various embodiments, the cross-sectional area at wall type pipe 110 is limited to less than the transversal of damper chamber 125 by damper assembly Face area.

In one embodiment, damper assembly 100 limits substantially reducing from damper chamber 125 to connecting tube 140 Cross-sectional area.For example, damper chamber 125 can limit as shown in the region 124 of the wall type outer cover 120 substantially provided in Fig. 8 Surely the cross-sectional area of connecting tube 140 substantially reduced is arrived.In this way, the cross-sectional area that connecting tube 140 limits is less than damper The cross-sectional area of chamber 125.

Referring again to FIGS. 7, in one embodiment, the wall type outer cover 120 of damper assembly 100 is with 90 degree or smaller approximate Acute angle limit bending section 128.Bending section 128 at wall type outer cover 120 can limit fluid and wall effect interaction, can With the sound energy for the pressure oscillation from fuel channel 95 of dissipating.However, in other embodiments, bending section 128 can limit closely Like 90 degree or bigger of angle.

Referring now to Figure 9, another embodiment of fuel manifold component 90 is substantially set and is configured to substantially similar It is shown in Fig. 2-8 and described.In the embodiment shown in fig. 9, damper assembly 100 further limits at wall type pipe 110 Bending section 113.In another embodiment, damper assembly 100 further limits bending section 143 at connecting tube 140.It is similar In described in the bending section 128 at wall type outer cover 120, bending section 113,128,143 respectively can further dissipate next From the sound energy of the pressure oscillation of the fluid in fuel channel 95, while it can also realize and compactly encapsulate damper assembly 100 In or around engine 10.

In various embodiments, bending section 113,143 can limit approximate 90 degree or bigger of angle.However, at other In embodiment, bending section 113,143 can limit approximate 90 degree or smaller acute angle.In other various embodiments, bending section 113,143 can limit approximate 90 degree or bigger of angle, and the bending section 128 at wall type outer cover limits 90 degree of approximation or more Small acute angle.In yet another embodiment, bending section 128 can limit approximate 90 degree or bigger of angle, and bending section 113, 143 limit approximate 90 degree or smaller acute angle.

Referring still to Fig. 9, damper assembly 100 further may include the wall type manifold 150 extended from connecting tube 140.Wall Formula manifold limits manifold cavity 155 in wall type manifold 150.In various embodiments, wall type manifold 150, which can provide, leads to connecting tube 140 entrance may include instrument by the entrance, such as, but not limited to pressure, temperature or vibrating sensor.For example, dynamic is pressed Force probe can be entered by wall type manifold 150 to read the pressure value at manifold cavity 155 or connecting tube 140.Dynamic pressure is visited Needle, which can provide the Fluid pressure (for example, fuel pressure) in damper assembly 100 and fuel manifold component 90, to be changed, amplitude, Frequency, the measured value of spike etc..

Referring now to Figure 10, substantially providing the exemplary steps for the method for the pressure oscillation in fuel manifold of decaying of summarizing Rapid flow chart (referred to herein as " method 1000 ").Method 1000 can limit the fuel discrimination for gas-turbine unit The component of tube assembly, structure and/or operation, such as about show Fig. 1-9 and the fuel manifold component 90 of engine 10 that describes. Although step provided herein is usually arranged with consecutive order, but it is to be understood that those of ordinary skill in the art can be with each Kind combination rearrange, omit, combination or otherwise essentially perform provided herein is the step of.

Method 1000 generally includes: the damper chamber extended from damper channel, the damper channel are provided at 1010 It is connected to the fuel channel fluid of fuel manifold component；A part stream is provided from fuel channel by damper chamber at 1020 Body；It (for example, damper chamber 125, damper channel 115 and fuel channel 95, is closed with fuel channel is flowed a fuel through at 1030 In each of Fig. 1-9 fuel manifold component 90 substantially provided and/or damper assembly 100).

In various embodiments, it includes providing liquid from fuel channel by damper chamber that a part of fluid is provided at 1020 Body and/or gaseous fuel, air or inert gas.

In one embodiment, method 1000 further comprises the flow that the fuel by fuel channel is adjusted at 1040 Or pressure.Adjusting, which may generally correspond to by the flow or pressure of the fuel of fuel channel, adjusts or changes engine operating state (for example, igniting/starting, improving and turn down to taking off or maximum power, or various operation power or state therebetween).

In various embodiments, at 1010 the step of may include by damper chamber (for example, damper chamber 125) and damping The first end (for example, first end 91 of fuel channel 95) of fuel channel is arranged in device channel (for example, damper channel 115). In one embodiment, method 1000 further comprises mentioning at the second end opposite with first end of fuel channel at 1050 For the second damper chamber and the second damper channel (for example, the second damper assembly at the second end 92 of fuel channel 95 Damper chamber 125 and damper channel 115 at 112).

For example, fuel channel can usually limit conduit or the channel of the approximate circumference around engine setting, will fire Material is transported to multiple fuel nozzles, and the longitudinal center line that these fuel nozzles usually surround engine is arranged with circumference.Combustion Expect that channel substantially can extend 360 degree of approximation near zero degree, without fuel channel is connected into closed loop.In this way, the One end can limit the end opposite with second end (for example, first end is approximately zero degree, second end is approximately 360 degree)

In another embodiment, method 1000 further comprise at 1060 via connecting tube provide from damper chamber to The fluid communication of second damper chamber.For example, providing via connecting tube (for example, connecting tube 140) from damper chamber to the second resistance The fluid communication of Buddhist nun's device chamber.There is provided via connecting tube from damper chamber to the fluid communication of the second damper chamber can usually limit By fuel channel 95, the first damper assembly 111, the closure of the fluid communication of the second damper assembly 112 and connecting tube 140 Loop.In one embodiment, the first end from the second damper chamber from the second end of fuel channel to fuel channel is provided The fluid communication of the damper chamber at place, which is included at damper chamber, provides offset pressure or flow (such as described by Fig. 5-6 ).

In other various embodiments, method 1000 further comprises limiting damper chamber and damper channel at 1070 It is set to Helmholtz's damper.It can be with for example, damper chamber 125 and damper channel 115 are limited to Helmholtz's damper It include: to limit the volume and/or area in damper chamber 125 and/or damper channel 115 to be based at least partially at one or more The target frequency of fuel manifold component 90 during a 10 operating status of engine.

In one embodiment, method 1000 may further include provided at 1080 from the second end of fuel channel to Be arranged in the damper chamber at the first end of fuel channel fluid communication (such as be generally illustrated about the embodiment in Fig. 5 and As description).In one embodiment, the damper from the first end from the second end of fuel channel to fuel channel is provided The fluid communication of chamber, which is included at damper chamber, provides offset pressure or flow (such as described in Fig. 5-6).

The all or part of fuel manifold component 90 and/or damper assembly 100 can be one of single black box Point, and can be by well known to a person skilled in the art any amount of processing manufactures.These manufactures are handled Referred to as the manufacture of " increasing material manufacturing " or " 3D printing " is handled.Further, it is possible to use any amount of casting, is machined, welding, Soldering or sintering processes or any combination thereof come individually or integrated with one or more other parts of fuel manifold component 90 Ground constructs damper assembly 100.In addition, the fuel manifold component 90 including damper assembly 100 may be constructed mechanical connection One or more independent assemblies (for example, by using bolt, nut, rivet or screw, or welding or soldering processing or its group Close) or position in space to realize substantially similar geometry, air dynamic or thermodynamic results, just as manufacturing or being assembled into one A or multiple components are the same.The non-limiting example of suitable material include high strength steel, nickel and cobalt-base alloys and/or metal or Ceramic matrix composites, or combinations thereof.

This written description discloses the present invention, including optimal mode using example, and also enables those skilled in the art Enough practice present invention, including manufacturing and using any device or system and executing any method being incorporated to.Of the invention can be special Sharp range is defined by the claims, and may include other examples that those skilled in the art expect.If these other show Example has structural detail identical with the literal language of claim, or if they include the literal language with claim Equivalent structural elements without essential difference, then these other examples intention is fallen within the scope of the appended claims.