阅读说明：本技术 涡轮发动机和制造方法 (Turbogenerator and manufacturing method ) 是由 V.瓦纳帕利 N.贾因 V.G.萨卡拉 B.N.蒙达尔 N.J.克雷 于 2018-01-17 设计创作，主要内容包括：一种涡轮发动机,其包括：转子组件,其包括多个转子叶片；外壳,其从多个转子叶片沿径向向外定位；以及环形圈,其联接到外壳,并且定位于多个转子叶片与外壳之间。环形圈构造成限制外壳朝向多个转子叶片的热收缩。(A kind of turbogenerator comprising: rotor assembly comprising multiple rotor blades；Shell is radially positioned from multiple rotor blades；And annular ring, it is connected to shell, and be positioned between multiple rotor blades and shell.Annular ring is configured to limitation thermal contraction of the shell towards multiple rotor blades.)

1. a kind of turbogenerator, comprising:

Rotor assembly comprising multiple rotor blades；

Shell is radially positioned from the multiple rotor blade；And

Annular ring is connected to the shell, and is positioned between the multiple rotor blade and the shell, the annular Ring structure is at limiting the thermal contraction of the shell towards the multiple rotor blade.

2. turbogenerator according to claim 1, which is characterized in that the shell is by having the first thermal expansion coefficient The preparation of first material, also, the multiple rotor blade and annular ring are different from first thermal expansion coefficient by having The second thermal expansion coefficient the second material preparation.

3. turbogenerator according to claim 2, which is characterized in that first material is metal material, also, institute Stating the second material is composite material.

4. turbogenerator according to claim 1, which is characterized in that each rotor blade includes leading edge, the annular Circle be positioned to center line relative to the turbogenerator and along axially across the leading edge.

5. turbogenerator according to claim 4, which is characterized in that each rotor blade further comprises rear, institute State annular ring be further positioned to the center line relative to the turbogenerator and along axially across the rear.

6. turbogenerator according to claim 1, which is characterized in that the turbogenerator further comprises being positioned at Adhesive phase between the shell and annular ring.

7. turbogenerator according to claim 1, which is characterized in that the turbogenerator further comprises being configured to Annular ring is set to be connected to the fastener of the shell.

8. turbogenerator according to claim 1, which is characterized in that annular ring includes surrounding annular ring edge The tapered edges part of circumferentially extending.

9. turbogenerator according to claim 1, which is characterized in that annular ring prestress, so that in institute It states edge on shell and causes resistance radially outward direction.

10. a kind of method for manufacturing turbogenerator, which comprises

It is positioned at annular ring on the radially inner side of shell, wherein the Shell structure turns at around the turbogenerator Sub-component is circumferentially；And

To annular ring prestress, so that edge causes resistance radially outward direction on the housing, and make The thermal contraction of the shell is restricted.

11. according to the method described in claim 10, it is characterized in that, including: to annular ring prestress

Annular ring is formed on the radially inner side of the shell, wherein annular ring is in the uncured state It is formed；And

Bond annular ring and the shell altogether.

12. according to the method for claim 11, which is characterized in that bonding annular ring and the shell altogether includes making Adhesive phase is positioned between annular ring and the shell.

13. according to the method described in claim 10, it is characterized in that, including: to annular ring prestress

The shell is heated to the first temperature, so that the shell increases on radial dimension；And

Annular ring is inserted in the shell, wherein the Shell structure is at being allowed to be cooled to than described first Towards annular ring constriction when the lower second temperature of temperature.

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

Determine internal diameter of shell at a temperature of described first；And

Annular ring is formed to have to the outer diameter bigger than the internal diameter of the shell.

15. a kind of turbogenerator, comprising:

Fan component comprising multiple fan blade；

Fan hub is radially positioned from the multiple fan blade；And

Annular ring is connected to the fan hub, and is positioned between the multiple fan blade and the fan hub, described Annular ring is configured to limit the thermal contraction of the fan hub towards the multiple fan blade.

16. turbogenerator according to claim 15, which is characterized in that the fan hub is by having the first thermal expansion system Several the first material preparations, also, the multiple fan blade and annular ring are by having and first thermal expansion coefficient It is prepared by the second material of the second different thermal expansion coefficients.

17. turbogenerator according to claim 16, which is characterized in that first material is metal material, also, Second material is composite material.

18. turbogenerator according to claim 15, which is characterized in that each fan blade includes leading edge, the ring Shape circle be positioned to the center line relative to the turbogenerator and along axially across the leading edge.

19. turbogenerator according to claim 18, which is characterized in that each fan blade further comprises rear, Annular ring be further positioned to the center line relative to the turbogenerator and along axially across the rear.

20. turbogenerator according to claim 15, which is characterized in that annular ring prestress, so that Edge causes resistance radially outward direction on the fan hub.

Technical field

The disclosure relates generally to turbogenerator, and relate more specifically to limit turbogenerator shell relative to The system and method for the thermal contraction of rotor assembly.

Background technique

At least some known gas-turbine units (such as, aircraft engine) include turning around turbogenerator The motor body of sub-component circumferentially.For example, as it is known that rotor assembly include being extended radially outward from root of blade At least row's rotor blade, also, rotor blade includes stator module close to turbogenerator and the blade tips passed through. Radial tip gap is defined between the blade tips of rotation and the fixing component of surrounding rotor component.

During power operation, the variation of the thermal environment in turbogenerator can cause rotor assembly and stator module Thermal expansion or thermal contraction.Such thermal expansion or thermal contraction may not be equably to occur on magnitude or rate.Therefore, may be used The unexpected friction between rotor blade tip and the fixing component of surrounding occurs.In addition, can rotor blade tip and around Fixing component between generate more broader than acceptable design gap radial gap.Unexpected friction and broader gap can be right Engine performance adversely affects.

Summary of the invention

In one aspect, a kind of turbogenerator is provided.Turbogenerator includes: rotor assembly comprising Duo Gezhuan Blades；Shell is radially positioned from multiple rotor blades；And annular ring, it is connected to shell, and be positioned at Between multiple rotor blades and shell.Annular ring is configured to limitation thermal contraction of the shell towards multiple rotor blades.

On the other hand, a kind of method for manufacturing turbogenerator is provided.This method is outer including being positioned at annular ring On the radially inner side of shell, wherein Shell structure at around turbogenerator rotor assembly circumferentially.This method is further Including so that edge causes resistance radially outward direction on the shell, and making the heat of shell to annular ring prestress Contraction is restricted.

It yet still another aspect, providing a kind of turbogenerator.Turbogenerator includes: fan component comprising Duo Gefeng Fan leaf；Fan hub is radially positioned from multiple fan blade；And annular ring, it is connected to fan hub, and fixed Between multiple fan blade and fan hub.Annular ring is configured to limitation thermal contraction of the fan hub towards multiple fan blade.

Detailed description of the invention

When detailed description below is read with reference to the drawings, these and other features, aspects and advantages of the disclosure will It becomes better understood, in the accompanying drawings, identical character representation spreads the identical component of attached drawing, in which:

Fig. 1 is the schematic illustration of exemplary turbine engine；

Fig. 2 be can be shown in Fig. 1 turbogenerator used in fan component viewgraph of cross-section；

Fig. 3 is the part according to the fan component shown in Fig. 2 of first embodiment of the present disclosure intercepted along region 3 The viewgraph of cross-section of amplification；And

Fig. 4 is the part according to the fan component shown in Fig. 2 of second embodiment of the present disclosure intercepted along region 4 The viewgraph of cross-section of amplification.

Unless otherwise instructed, otherwise attached drawing presented herein is intended to show the feature of embodiment of the disclosure.These Feature is considered being applicable to including in the broad category of system of one or more other embodiments of the present disclosure.Therefore, attached drawing is not It is intended to include known to persons of ordinary skill in the art practicing all conventional features needed for the embodiments described herein.

Specific embodiment

In following description and claims, many terms will be mentioned, they should be defined as having following meanings.

Unless otherwise clearly specified in the context, otherwise singular " one ", "an" and "the" include a plurality of references Object.

" optional " or " optionally " mean that the event then described or situation can occur or can not occur, and packet is described Include event there is a situation where and event not there is a situation where.

As being applicable to modify tolerable variation throughout the approximating language that specification and claims use herein Any quantificational expression, the change without causing basic function involved in it.Therefore, by such as " about ", " substantially " and " base In sheet " the value of one or more terms modification be not limited to specified exact value.In at least some cases, approximating language It can correspond to the precision of the instrument for measuring the value.Herein and specification and claims are spread, scope limitation can group It closes and/or exchanges.Unless context or language indicates otherwise, otherwise such range is identified and the institute including being included in There is subrange.

As used herein, term " axial " and " along axial direction " refer to substantially with the center line of turbogenerator Parallel and extension direction and orientation.In addition, term " radial " and " radially " refer to substantially and in turbogenerator Heart line is vertical and the direction extended and orientation.In addition, as used herein, term " circumferential " and " circumferentially " refer to and enclose Around the direction that the center line of turbogenerator extends and orientation arciformly.

Embodiment of the disclosure be related to limit turbogenerator shell relative to rotor assembly thermal contraction system and Method.More specifically, turbogenerator described herein includes: shell (such as, fan hub) comprising multiple rotor leaves Piece；And annular ring, it is connected on the radially inner side of shell.Annular ring and multiple rotor blades are prepared by same material, are made Annular ring is obtained with rotor blade with similar rate and magnitude thermal expansion and thermal contraction.In addition, shell by with annular ring and rotor The different material preparation of blade, so that shell is with the speed thermal expansions and thermal contraction different from annular ring and rotor blade.Therefore, Make annular ring be connected to shell promote limitation thermal contraction of the shell towards multiple rotor blades, thus reduce rotor blade tip with Unexpected a possibility that rubbing between the fixation kit of surrounding.

Although describing following embodiment under the situation of turbofan, it is to be understood that, it is described herein System and method could be applicable to such as turboprop, turboaxle motor, turbojet, continental rise whirlpool Turbine.

Fig. 1 is the schematic diagram of exemplary turbine engine 10, and turbogenerator 10 includes fan component 12, low pressure or pressurization Compressor assembly 14, high pressure compressed thermomechanical components 16 and burner assembly 18.Fan component 12, booster compression thermomechanical components 14, height Pressure compressor assembly 16 and burner assembly 18 are connected at stream and are coupled.Turbogenerator 10 further includes low-pressure turbine component 22 With the high-pressure turbine component 20 for being connected to and coupling at stream with burner assembly 18.Fan component 12 include from rotor disk 26 radially The outwardly extending fan blade 24 at array.Low-pressure turbine component 22 is connected to fan component 12 by the first drive shaft 28 With booster compression thermomechanical components 14, also, high-pressure turbine component 20 is connected to high pressure compressed thermomechanical components by the second drive shaft 30 16.Turbogenerator 10 has air inlet 32 and exhaust outlet 34.Turbogenerator 10 further comprises center line 36, fan component 12, booster compression thermomechanical components 14, high pressure compressed thermomechanical components 16 and turbine assembly 20 and 22 are rotated around center line 36.

In operation, the air that turbogenerator 10 is entered by air inlet 32 is pressed by fan component 12 towards pressurization Contracting thermomechanical components 14 and be guided.The air of compression is discharged from booster compression thermomechanical components 14 towards high pressure compressed thermomechanical components 16.Highly The air of compression is guided from high pressure compressed thermomechanical components 16 towards burner assembly 18, mixes with fuel, also, mixture exists Burning in burner assembly 18.The high-temperature combustion gas generated by burner assembly 18 is drawn towards turbine assembly 20 and 22 It leads.Burning gases are then discharged via exhaust outlet 34 from turbogenerator 10.

Fig. 2 be can the fan component 12 used in turbogenerator 10 (being shown in Fig. 1) (be hereinafter also referred to as " rotor assembly ") viewgraph of cross-section.As described above, fan component 12 includes rotating more relative to center line 36 A fan blade 24 (being hereinafter also referred to as " rotor blade ").Each fan blade 24 include leading edge 38, rear 40 and Blade tips 42, blade tips 42 are radially positioned from rotor disk 26.More specifically, blade tips 42 are close to stator pack Part 44 and position, stator module 44 around fan component 12 circumferentially.Stator module 44 includes from multiple fan blade 24 The shield 48 and fan hub 46 (being hereinafter also referred to as " shell ") radially positioned.Shield 48 and blade tips 42 every A certain distance is opened, so that limiting interstitial gap 50 in-between.Although describing institute herein under the situation of fan component 12 The embodiment of description, but embodiment described herein is applicable to any rotor assembly (such as, but not limited to turbine assembly 20 and 22 (being shown in Fig. 1)).

Fig. 3 is the viewgraph of cross-section along the amplification of the part of the fan component 12 of region 3 (showing in Fig. 2) interception. In the exemplary embodiment, fan component 12 further comprises annular ring 52, and annular ring 52 is connected to fan hub 46, and positions Between multiple fan blade 24 and fan hub 46.Fan hub 46 includes radially inner side 54 and radial outside 56, also, annular ring 52 be connected to the radially inner side 54 of fan hub 46 and along the radially inner side of fan hub 46 54 circumferentially.Therefore, as follows It will be explained in further detail, annular ring 52 limits the direction when the temperature of fan hub 46 is less than predetermined threshold value of fan hub 46 The thermal contraction of multiple fan blade 24 radially inward.

For example, fan blade 24, fan hub 46 and annular ring 52 are maintained between blade tips 42 and shield 48 by promoting Interstitial gap 50 any material preparation.In one embodiment, fan hub 46 is by first with the first thermal expansion coefficient Material preparation, also, annular ring 52 and multiple fan blade 24 are by with second thermal expansion different from the first thermal expansion coefficient It is prepared by the second material of coefficient.First material is metal material, also, the second material is composite material.As used herein , " metal " refers to monometallic material or metal alloy compositions.In addition, composite material includes but is not limited to fibre reinforced polymerization Object material and ceramic matrix composite.Therefore, in some embodiments, the first thermal expansion coefficient is greater than the second thermal expansion system Number, so that the first material is with the rate bigger than the second material and magnitude thermal expansion and is heat-shrinked.Therefore, annular ring 52 is positioned In promotion limitation fan hub 46 on the radially inner side 54 of fan hub 46 from the rate or magnitude direction bigger than annular ring 52 Fan blade 24 is heat-shrinked.

As described above, each fan blade 24 includes leading edge 38.In the exemplary embodiment, annular ring 52 has Axial length, and be positioned to center line 36 (both showing in Fig. 1) relative to turbogenerator 10 and along axial cross Cross leading edge 38.Interstitial gap 50 at leading edge 38 be generally less than due to high-speed air flow received at leading edge 38 relative to The interstitial gap 50 of other axial positions of center line 36, and the performance to promote raising turbogenerator 10.Therefore, Annular ring 52 is set to be located across the hardening that leading edge 38 provides localization to fan hub 46 and strategically positions.

In the exemplary embodiment, adhesive phase 58 is positioned between fan hub 46 and annular ring 52, to promote to make annular Circle 52 is connected to fan hub 46.Enable any adhesive material that turbogenerator 10 works as described in this article Material is all positioned between fan hub 46 and annular ring 52.For example, in one embodiment and as explained in more detail below, Adhesive material be higher than about 200 ℉ temperature (such as, in the total bonding of fan hub 46 and annular ring 52 during reach Temperature) curable adhesive.In addition, fastener 60 is connected between fan hub 46 and annular ring 52, also, fastener 60 Promotion makes annular ring 52 be connected to fan hub 46.In addition, annular ring 52 include surround annular ring 52 circumferentially at least one A tapered edges part 62.Tapered edges part 62 promotes the disengaging (disbond) between limitation fan hub 46 and annular ring 52, And promote to enhance the distribution of the load on entire annular ring 52.

Fig. 4 is the viewgraph of cross-section along the amplification of the part of the fan component 12 of region 4 (showing in Fig. 2) interception. As described above, each fan blade 24 includes rear 40.In the exemplary embodiment, annular ring 52 has axial long Degree, and be positioned to the center line 36 (showing in Fig. 1) relative to turbogenerator 10 and along axially across leading edge 38 and after Edge 40.Therefore, annular ring 52 crosses the entire axial length of fan blade 24, so that there is unexpected leaf abscission (blade-out) closing (containment) of supplement is provided in the case where situation.

A kind of method for manufacturing turbogenerator 10 is described herein.This method includes that annular ring 52 is made to be positioned at wind On the radially inner side 54 of fan case 46, wherein fan hub 46 surrounds fan component 12 circumferentially.This method further includes to annular 52 prestress are enclosed, so that edge causes resistance 64 radially outward direction on fan hub 46, and make fan hub 46 Thermal contraction is restricted.

Using any technology for enabling turbogenerator 10 to work as described in this article come to annular ring 52 prestress.For example, including: the radially inner side 54 that annular ring 52 is formed in fan hub 46 to 52 prestress of annular ring On, wherein annular ring 52 is formed in the uncured state；And bond annular ring 52 and fan hub 46 altogether.In a reality It applies in example, annular ring 52 and fan hub 46 bond at a high temperature of at least about 200 ℉ altogether in autoclave.Therefore, annular ring 52 are transformed into solid state from uncured state, and are connected to fan hub 46 in situ.In addition, this method further comprises making to glue Mixture layer 58 is positioned between annular ring 52 and fan hub 46, to promote that annular ring 52 is made to be connected to fan hub 46.

It alternatively, include that fan hub 46 is heated to the first temperature to 52 prestress of annular ring, so that fan hub 46 exists Increase on radial dimension.This method further comprises that annular ring 52 is inserted in fan hub 46.In such embodiments, ring Shape circle 52 is preforming and in the state of solidification.Then, fan hub 46 be allowed to be cooled to it is more lower than the first temperature Towards 52 constriction of annular ring when second temperature.

More specifically, this method further comprises: determining the internal diameter of fan hub 46 at the first temperature；And by annular ring 52 are formed to have the outer diameter bigger than the internal diameter of fan hub 46.Therefore, when fan hub 46 is towards 52 constriction of annular ring, in wind Interference fit is limited between fan case 46 and annular ring 52.

The example technique effect of system and method described herein includes at least one of lower person: (a) being reduced Low temperature between the rotor assembly and stator module of turbogenerator takes off extruding (pinch), and improves cruise gap；(b) Improve the specific fuel consumption of turbogenerator；(c) service life of Extending Rotor component and stator module；(d) non-pre- in appearance The closing of supplement is provided in the case where the leaf abscission situation of phase；And (e) in the feelings for unexpected leaf abscission situation occur Fragment is limited under condition from advancing along forward direction.

The exemplary reality of the annular ring and associated components for being used together with turbogenerator is described in detail above Apply example.The system is not limited to specific embodiment described herein, and on the contrary, the step of component and/or method of system can Independently of other components described herein and/or step and separated utilize.For example, structure described herein The construction of part can be also combined with other processes to use, and is not limited to only practice together with the fan section of turbogenerator. On the contrary, implementing and utilizing in conjunction with many applications for the thermal contraction that exemplary embodiment can reduce ring structure with expectation.

Although the specific features of the various embodiments of the disclosure can be shown in some drawings without showing in other attached drawings Show, but this is used for the purpose of for the sake of convenience.Principle according to an embodiment of the present disclosure, any feature of attached drawing all can with it is any its Any feature of its attached drawing combines to quote and/or be claimed.

This written description uses examples to disclose embodiment of the disclosure (including optimal mode), and also makes in this field Any technical staff being capable of embodiment of the disclosure (including any device or system of manufacture and use, and execute and appoint The method what is incorporated to).The patentable range of embodiment described herein is defined by the claims, and may include The other examples that those skilled in the art expect.If such other examples have not different from the literal language of claims Structural detail, or if they include the equivalent structural elements with the literal language of claims without substantial differences, Such other examples are intended in the range of claims.