CN107023321A - The centering torsion pass of multistage high speed turbine machine is locked mechanism - Google Patents
The centering torsion pass of multistage high speed turbine machine is locked mechanism Download PDFInfo
- Publication number
- CN107023321A CN107023321A CN201710400321.4A CN201710400321A CN107023321A CN 107023321 A CN107023321 A CN 107023321A CN 201710400321 A CN201710400321 A CN 201710400321A CN 107023321 A CN107023321 A CN 107023321A
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- impeller
- rotating shaft
- level
- torsion pass
- high speed
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- 230000007246 mechanism Effects 0.000 title claims abstract description 37
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 230000013011 mating Effects 0.000 claims description 3
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000006978 adaptation Effects 0.000 abstract description 3
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
- F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
A kind of centering torsion pass of multistage high speed turbine machine is locked mechanism, some grades of impellers including rotating shaft and in the rotating shaft, some grades of impellers are connected to drive the axis of rotation with the rotating shaft transmission, engaged and be connected by end tooth between the impeller at different levels, the two ends of some grades of impellers are respectively equipped with locking nut to apply a pretightning force to the impellers at different levels.The present invention centering torsion pass be locked mechanism have the advantages that efficiently, transmission axial force and torsion stabilization, compact conformation, assemble simply, adaptation condition ability it is strong.
Description
Technical field
The present invention relates to multistage high speed turbine machine field, the centering torsion pass of more particularly to a kind of multistage high speed turbine machine is locked
Combined mechanism.
Background technology
In traditional multistage high speed turbine machine, the connection between axle and hub disk is realized using pin key, biography is played
The effect of torque delivery.Fastening form between hub disk and axle is realized by the interference fit of pin key mostly.It is multistage
High speed turbine machine uses pin key structure in many places, can be failed in long-term operation process because material occurs plastic deformation, and
Pin key should not use this structure at high speed.
The content of the invention
In view of this, present invention proposition is a kind of can effectively realize torsion pass and the centering of constitutionally stable multistage high speed turbine machine
Torsion pass is locked mechanism.
The present invention proposes that a kind of centering torsion pass of multistage high speed turbine machine is locked mechanism, including rotating shaft and installed in institute
Some grades of impellers in rotating shaft are stated, some grades of impellers are connected with the rotating shaft transmission to drive the axis of rotation, described
Engaged and be connected by end tooth between impellers at different levels, the two ends of some grades of impellers are respectively equipped with locking nut with to institute
State impellers at different levels and apply a pretightning force.
In one embodiment, the impeller includes wheel disc and the blade on the wheel disc, and the wheel disc, which has, to be supplied
The central through hole that the rotating shaft is worn, some grades of impellers include the primary runner and impeller for being located at two ends and are located at
An at least intergrade impeller between the primary runner and impeller, the wheel disc of the primary runner is towards the final stage
The side of impeller is provided with end tooth, and the wheel disc of the impeller is provided with end tooth in the side towards the primary runner, it is described extremely
The both sides of a few intergrade impeller are equipped with end tooth.
In one embodiment, the fit form that the primary runner and impeller and the mating surface of the rotating shaft are used for
Interference fit.
In one embodiment, at least one-level is connected with the shaft gear in the intergrade impeller.
In one embodiment, the wall of the central through hole of at least one-level intergrade impeller is provided with impeller spline, institute
State rotating shaft the position positioned at least one-level intergrade impeller in its outside wall surface be provided be used to and the impeller spline tooth
Take turns the rotating shaft spline of engagement.
In one embodiment, the impeller is set to level Four, including first order impeller, second level impeller, third level impeller
With fourth stage impeller, the first order impeller is used as the impeller, institute as the primary runner, the fourth stage impeller
Impeller spline is stated to be arranged on the second level impeller.
In one embodiment, interference fit is used to enter between the first order impeller and fourth stage impeller and the rotating shaft
Row torsion pass.
In one embodiment, the use level being interference fitted between the first order impeller and fourth stage impeller and the rotating shaft
For 0.08mm, axial interference length is 15mm.
In one embodiment, the hand of spiral of the locking nut is set to opposite with the rotation direction of the impeller.
In one embodiment, coordinate at least described in one between intergrade impeller and the rotating shaft for gap.
In summary, the present invention proposes that a kind of centering torsion pass of multistage high speed turbine machine is locked mechanism, the mechanism
Connected between impellers at different levels using end tooth so that steam turbine at high speed can automatic centering axis, moment of torsion uniformly divides
It is fitted on each tooth, it is to avoid torsion pass is concentrated and causes surely middle failure.End tooth pressure face is compressed by locking nut, end tooth is reached
The effect of effective torque, it is to avoid using interference fit torsion pass under high rotation speed operation plasticity occurs for conventional multi-level steam turbine pin key
Deformation failure phenomenon.The effect that axial force is transmitted between wheel disc and axle is realized by the combined mechanism, it is to avoid a variety of alternative cycles
Stress occurs in one mechanism, distributes body function more reasonable, the life-span is longer, compared to the transmission axial direction of traditional steam turbine
Force mechanisms are simpler reliable, and assemble up relatively easy.In addition, in certain embodiments, the present invention passes through multi-stage impeller
Using interference fit between wheel disc two ends and axle, coordinated between intergrade impeller and axle using gap so that between axle and wheel disc
The location point of torsion pass greatly reduces, and only relies on effective torsion pass that both ends of the surface can be achieved with axle and impeller.In addition, in some embodiments
In, using, by aiding in torsion pass structure (for example, spline) to connect, auxiliary torsion pass prevents between at least one wheel disc and axle
Slippage problems, to adapt to be operated under any operating mode.The centering torsion pass of the present invention is locked mechanism with efficient, transmission axle
To power and torsion stabilization, compact conformation, assemble the advantages of simple, adaptation condition ability is strong.
Brief description of the drawings
The turbine rotor structure chart that Fig. 1 is locked where mechanism for present invention centering torsion pass.
Fig. 2 is locked the schematic diagram of mechanism for present invention centering torsion pass.
Fig. 3 is the structural representation in the interference fit face of impeller of the present invention.
Fig. 4 is the structural representation of end tooth connection between adjacent both stage impellers of the invention.
Fig. 5 is the structural representation of impeller spline of the present invention.
Fig. 6 is the structural representation of rotating shaft of the present invention.
Embodiment
Before describing the embodiments in more detail, it should be understood that the invention is not restricted to institute hereafter or in accompanying drawing in the application
The detailed construction or arrangement of elements of description.The embodiment that the present invention can realize for other manner.Furthermore, it is to be understood that this paper institutes
The wording and term used is solely for describing purposes, should not the explanation of being construed as limiting property." comprising " used herein, "comprising",
The similar wording such as " having " is meant comprising items listed thereafter, its equivalent and other additional things.Particularly, description is worked as
When " certain element ", the quantity that the present invention does not limit the element can also include multiple as one.
As Figure 1-3, the centering torsion pass of multistage high speed turbine machine according to an embodiment of the invention is locked mechanism
10 include rotating shaft 12 and some grades of impellers in rotating shaft 12, and such as level Four impeller, some grades of impellers are driven with rotating shaft 12
Connection is to cause wheel rotation and then drive shaft 12 is rotated.It is connected between impellers at different levels by end tooth engagement 121, together
When, the two ends of some grades of impellers are respectively equipped with locking nut 14 to apply a pretightning force to impellers at different levels.
Each impeller includes wheel disc and the blade on wheel disc, and wheel disc has the central through hole worn for rotating shaft 12.
Some grades of impellers are included positioned at the primary runner and impeller at two ends and positioned at the primary runner and impeller
Between an at least intergrade impeller, the wheel disc of primary runner is provided with end tooth in the side towards impeller, impeller
Wheel disc is provided with end tooth in the side towards primary runner, and the both sides of an at least intergrade impeller are equipped with end tooth.
In an illustrated embodiment, impeller is set to level Four, and level Four impeller includes the axially arranged successively along rotating shaft 12
One stage impeller 16, second level impeller 18, third level impeller 20 and fourth stage impeller 22.The size of above-mentioned level Four impeller is along rotating shaft
Increase step by step on 12 axial direction.The wheel disc of first order impeller 16 is provided with end tooth in the side towards fourth stage impeller 22, the
The wheel disc of level Four impeller is provided with the wheel of end tooth, second level impeller 18 and third level impeller 20 in the side towards first order impeller 16
Disk is equipped with end tooth in both sides, and level Four impeller is connected with a joggle togather by end tooth gear.End tooth connection is used to cause vapour
Turbine at high speed can automatic centering axis, so as to effectively solve that multistage high speed turbine machine centering is unstable, torsion pass is skidded
The problem of.
First order impeller 16 one end and fourth stage impeller 22 away from fourth stage impeller 22 away from first order impeller 16 one
End sets a locking nut 14 respectively, and such as self-locking nut, locking nut 14 applies a pretightning force to corresponding impeller so that each
The end tooth of level impeller is closely linked, and is evenly distributed to moment of torsion on each tooth when steam turbine is operated, it is to avoid torsion pass collection
In and cause surely middle failure so that end tooth reaches the effect of effective torque.The pretightning force that locking nut 14 applies to impeller can be with
Engage required pretightning force to determine according to end tooth, to apply a suitable torque on locking nut 14.The locking of the present invention
Nut 14, which can solve end tooth two ends, to be needed to lock and share the effect that fraction torsion is delivered in rotating shaft 12.
In the present embodiment, in order to further strengthen the locking function of locking nut 14, by the hand of spiral of locking nut 14
It is set to opposite with the rotation direction of impeller.The benefit so set is that during high-speed rotation, locking nut 14 will not pine
It is dynamic, it is ensured that moment of torsion can be effectively transmitted between the end tooth of impellers at different levels, prevents fretting damage.
Fit form between the rotating shaft of the present invention and hub disk is designed to that rotating shaft and the torsion pass of wheel disc position can be reduced
Put a little.Specifically, the fit form that primary runner and impeller and the mating surface of rotating shaft are used so may be used for interference fit
Torsion is transmitted to rotating shaft to solve multistage high speed turbine machine, the problem of to export shaft work.At least one-level intergrade impeller is with turning
The fit form of axle coordinates for gap.By using interference fit between hub disk two ends and rotating shaft so that rotating shaft and wheel disc
Between the location point of torsion pass greatly reduce, only rely on both ends of the surface and can be achieved with rotating shaft and effective torsion pass of impeller.
As shown in figure 4, be respectively adopted between first order impeller 16 and fourth stage impeller 22 and rotating shaft 12 interference fit 161,
221, the use level of the interference fit is 0.08mm, and axial interference length is 15mm.This magnitude of interference can meet turbine shaft upload
Torque delivery exports 100KW power.Certainly, in other embodiments, other interference can also be set to set.
Also set up at high speed and arbitrarily under operating mode in normal work, some embodiments of the present invention to adapt to steam turbine
Auxiliary torque transmission mechanism.Specifically, in the intergrade impeller at least between one-level and rotating shaft by aiding in torque transmission mechanism
181 carry out torsion pass.In the present embodiment, the auxiliary torque transmission mechanism is spline, to aid in torsion pass.Accordingly even when combined mechanism is in work
In the case of condition change acutely, the problem of prevented also from occurring skidding unstability, adapt to be operated under any operating mode, realize impeller
Effective torsion pass between rotating shaft.But in other embodiments, it would however also be possible to employ the auxiliary torque transmission mechanism of other forms.
Fig. 5 and Fig. 6 are please also refer to, the wall of the central through hole 24 of second level impeller 18 is provided with impeller spline 26, turned
Axle 12 is spent in being provided with its outside wall surface in the position positioned at second level impeller 18 to rotating shaft engage with the gear of impeller spline 26
Key 28, to aid in torsion pass.When it is implemented, the design parameter of spline：Modulus is 2, and the number of teeth is 22, pressure angle 37.50, spline
Length of fit 20mm, the high 4.6mm of tooth.It should be appreciated that above parameter is a kind of specific setting, it can be entered according to actual conditions
Row modification.
It should be appreciated that above-mentioned be arranged on spline on second level impeller 18, mainly in view of in the running, at this
The moment of flexure for acting on the two ends strong point is smaller, and balance is preferable.But the present invention is not limited this, in other embodiments, root
According to the actual design demand of steam turbine, spline can also be arranged on third level impeller 20, or be simultaneously arranged on spline
On second level impeller 18 and third level impeller 20.
In summary, the present invention proposes that a kind of centering torsion pass of multistage high speed turbine machine is locked mechanism, the mechanism
Connected between impellers at different levels using end tooth so that steam turbine at high speed can automatic centering axis, moment of torsion uniformly divides
It is fitted on each tooth, it is to avoid torsion pass is concentrated and causes surely middle failure.End tooth pressure face is compressed by locking nut, end tooth is reached
The effect of effective torque, it is to avoid using interference fit torsion pass under high rotation speed operation plasticity occurs for conventional multi-level steam turbine pin key
Deformation failure phenomenon.The effect that axial force is transmitted between wheel disc and axle is realized by the combined mechanism, it is to avoid a variety of alternative cycles
Stress occurs in one mechanism, distributes body function more reasonable, the life-span is longer, compared to the transmission axial direction of traditional steam turbine
Force mechanisms are simpler reliable, and assemble up relatively easy.In addition, the present invention is by between multi-stage impeller wheel disc two ends and axle
Using interference fit so that the location point of torsion pass greatly reduces between axle and wheel disc, only rely on both ends of the surface and can be achieved with axle and leaf
Effective torsion pass of wheel.In addition, in certain embodiments, using between at least one wheel disc and axle by aiding in torsion pass structure (example
Such as, spline) connection, torsion pass is aided in, prevents slippage problems, to adapt to be operated under any operating mode.The centering of the present invention
Torsion pass be locked mechanism have efficiently, transmission axial force and torsion stabilization, compact conformation, assembling simply, adaptation condition ability
Strong the advantages of.
Concepts described herein may be embodied to other forms in the case of without departing from its spirit and characteristic.It is disclosed
Specific embodiment should be considered as exemplary rather than restricted.Therefore, the scope of the present invention be by appended claim,
Rather than be determined according to these descriptions before.Any change in the letter and equivalency range of claim is all
The scope of these claims should be belonged to.
Claims (10)
1. a kind of centering torsion pass of multistage high speed turbine machine is locked mechanism, if including rotating shaft and in the rotating shaft
Dry level impeller, some grades of impellers are connected to drive the axis of rotation with the rotating shaft transmission, it is characterised in that described each
Engaged and be connected by end tooth between level impeller, the two ends of some grades of impellers are respectively equipped with locking nut with to described
Impellers at different levels apply a pretightning force.
The mechanism 2. the centering torsion pass of multistage high speed turbine machine as claimed in claim 1 is locked, it is characterised in that the leaf
Wheel includes wheel disc and the blade on the wheel disc, and the wheel disc has the central through hole worn for the rotating shaft, described
Some grades of impellers are included positioned at the primary runner and impeller at two ends and between the primary runner and impeller
An at least intergrade impeller, the wheel disc of the primary runner is provided with end tooth, the end in the side towards the impeller
The wheel disc of level impeller is provided with end tooth in the side towards the primary runner, and the both sides of an at least intergrade impeller are equipped with
End tooth.
The mechanism 3. the centering torsion pass of multistage high speed turbine machine as claimed in claim 2 is locked, it is characterised in that described first
The fit form that level impeller and impeller and the mating surface of the rotating shaft are used is interference fit.
The mechanism 4. the centering torsion pass of multistage high speed turbine machine as claimed in claim 2 is locked, it is characterised in that in described
At least one-level is connected with the shaft gear in intercaste impeller.
The mechanism 5. the centering torsion pass of multistage high speed turbine machine as claimed in claim 4 is locked, it is characterised in that it is described extremely
The wall of the central through hole of few one-level intergrade impeller is provided with impeller spline, and the rotating shaft is in the middle of at least one-level
The position of level impeller is provided with the rotating shaft spline to be engaged with the impeller spline gear in its outside wall surface.
The mechanism 6. the centering torsion pass of multistage high speed turbine machine as claimed in claim 5 is locked, it is characterised in that the leaf
Wheel is set to level Four, including first order impeller, second level impeller, third level impeller and fourth stage impeller, the first order impeller
As the primary runner, the fourth stage impeller is arranged at the second level as the impeller, the impeller spline
On impeller.
The mechanism 7. the centering torsion pass of multistage high speed turbine machine as claimed in claim 6 is locked, it is characterised in that described the
Interference fit is used to carry out torsion pass between one stage impeller and fourth stage impeller and the rotating shaft.
The mechanism 8. the centering torsion pass of multistage high speed turbine machine as claimed in claim 7 is locked, it is characterised in that described the
The use level being interference fitted between one stage impeller and fourth stage impeller and the rotating shaft is 0.08mm, and axial interference length is
15mm。
The mechanism 9. the centering torsion pass of multistage high speed turbine machine as claimed in claim 1 is locked, it is characterised in that the lock
The hand of spiral of tight nut is set to opposite with the rotation direction of the impeller.
The mechanism 10. the centering torsion pass of multistage high speed turbine machine as claimed in claim 3 is locked, it is characterised in that at least
Coordinate described in one between intergrade impeller and the rotating shaft for gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400321.4A CN107023321A (en) | 2017-05-31 | 2017-05-31 | The centering torsion pass of multistage high speed turbine machine is locked mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710400321.4A CN107023321A (en) | 2017-05-31 | 2017-05-31 | The centering torsion pass of multistage high speed turbine machine is locked mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107023321A true CN107023321A (en) | 2017-08-08 |
Family
ID=59528985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710400321.4A Withdrawn CN107023321A (en) | 2017-05-31 | 2017-05-31 | The centering torsion pass of multistage high speed turbine machine is locked mechanism |
Country Status (1)
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| CN (1) | CN107023321A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989654A (en) * | 2017-12-27 | 2018-05-04 | 江苏益齿星医疗器械有限公司 | Multilayer charging turbine axis |
| CN108035775A (en) * | 2018-01-08 | 2018-05-15 | 翁志远 | Rotor, steam turbine and prime mover equipment of steam turbine |
| WO2018218530A1 (en) * | 2017-05-31 | 2018-12-06 | 深圳智慧能源技术有限公司 | Centering and twist lock combination mechanism for multistage high-speed steam turbine |
| CN109630206A (en) * | 2018-12-16 | 2019-04-16 | 中国航发沈阳发动机研究所 | A kind of multistage disk rotors structure |
| CN114017385A (en) * | 2021-11-05 | 2022-02-08 | 中国航发沈阳发动机研究所 | Multistage rotor torque transmission structure in gas compressor |
| CN115855482A (en) * | 2022-12-30 | 2023-03-28 | 上海尚实航空发动机股份有限公司 | Centrifugal impeller over-rotation tool and detection equipment |
| CN114017385B (en) * | 2021-11-05 | 2024-11-12 | 中国航发沈阳发动机研究所 | Multistage rotor transmission structure in compressor |
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| US20170145859A1 (en) * | 2015-11-19 | 2017-05-25 | United Technologies Corporation | Coupling system comprising self locking joint |
| CN206769963U (en) * | 2017-05-31 | 2017-12-19 | 深圳智慧能源技术有限公司 | The centering torsion pass of multistage high speed turbine machine is locked mechanism |
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- 2017-05-31 CN CN201710400321.4A patent/CN107023321A/en not_active Withdrawn
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| GB608978A (en) * | 1955-09-26 | 1948-09-23 | Armstrong Siddeley Motors Ltd | A rotor carrying a number of circumferential blade rows |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018218530A1 (en) * | 2017-05-31 | 2018-12-06 | 深圳智慧能源技术有限公司 | Centering and twist lock combination mechanism for multistage high-speed steam turbine |
| CN107989654A (en) * | 2017-12-27 | 2018-05-04 | 江苏益齿星医疗器械有限公司 | Multilayer charging turbine axis |
| CN108035775A (en) * | 2018-01-08 | 2018-05-15 | 翁志远 | Rotor, steam turbine and prime mover equipment of steam turbine |
| CN109630206A (en) * | 2018-12-16 | 2019-04-16 | 中国航发沈阳发动机研究所 | A kind of multistage disk rotors structure |
| CN114017385A (en) * | 2021-11-05 | 2022-02-08 | 中国航发沈阳发动机研究所 | Multistage rotor torque transmission structure in gas compressor |
| CN114017385B (en) * | 2021-11-05 | 2024-11-12 | 中国航发沈阳发动机研究所 | Multistage rotor transmission structure in compressor |
| CN115855482A (en) * | 2022-12-30 | 2023-03-28 | 上海尚实航空发动机股份有限公司 | Centrifugal impeller over-rotation tool and detection equipment |
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Application publication date: 20170808 |