CN208456913U - A kind of single-stage segmented centrifugal compressor impeller structure - Google Patents
A kind of single-stage segmented centrifugal compressor impeller structure Download PDFInfo
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- CN208456913U CN208456913U CN201821054575.1U CN201821054575U CN208456913U CN 208456913 U CN208456913 U CN 208456913U CN 201821054575 U CN201821054575 U CN 201821054575U CN 208456913 U CN208456913 U CN 208456913U
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- impeller section
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- 238000005452 bending Methods 0.000 claims abstract description 7
- 125000006850 spacer group Chemical group 0.000 claims abstract description 7
- 239000010935 stainless steel Substances 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 4
- 230000001154 acute effect Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
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- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000013016 damping Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000008676 import Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 229910000754 Wrought iron Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- ZNKMCMOJCDFGFT-UHFFFAOYSA-N gold titanium Chemical compound [Ti].[Au] ZNKMCMOJCDFGFT-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 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
- 230000011218 segmentation Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910001258 titanium gold Inorganic materials 0.000 description 1
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Abstract
The utility model discloses a kind of single-stage segmented centrifugal compressor impeller structures, including the first impeller section being sequentially arranged on armature spindle, second impeller section and third impeller section, it is equipped with step fitting surface on each impeller disk and radial interference fit assembly is integral, tapered sleeve is interference fitted radially on the outside step fitting surface for being mounted on the first impeller section, axle envelope is by screw threads for fastening on armature spindle, and tapered sleeve is compressed in the axial direction, and spacer pin is installed between axle envelope and armature spindle, second impeller section, the blade quantity of third impeller section is equal and connects one to one on circumferential position, the blade of first impeller section misplaces with the blade of the second impeller section arrange in the circumferential, and first impeller section vane inlet molded line use bending molded line.The single-stage segmented centrifugal compressor impeller structure of the utility model, has high pressure ratio and design is simple, easy to assembly, can meet all advantages and demand of single-stage compressor combustion engine structure.
Description
Technical field
The utility model belongs to gas turbine field, is related to a kind of centrifugal-flow compressor blade wheel structure, specifically, referring to
A kind of single-stage segmented high pressure ratio centrifugal-flow compressor blade wheel structure.
Background technique
Single stage centrifugal compressor is in the design of small-sized combustion engine structure using relatively wide, the combustion engine of general 100kW~5MW power
This structure can be used.Particularly with the application of MW class power section, single-stage compressor is with structure is simple, scale is small, dimension
The features such as shield is convenient, failure rate is low, the service life is long, high reliablity.But it is needed simultaneously in order to guarantee the realization of combustion engine design power index
Want compressor that there is high pressure ratio parameter.
For the same power section combustion engine compressor impeller of domestic independent development, highest Design compression ratio can only achieve 4.3,
And the pressure ratio highest of external one-stage centrifugal compressor can accomplish 9, can not adapt to demand of the MW class combustion engine to high pressure ratio.
Utility model content
For the disadvantages mentioned above and deficiency of the prior art, the utility model is intended to provide a kind of single-stage with high pressure ratio point
Segmentation centrifugal compressor impeller structure, structure design is simple, easy to assembly, can meet all of single-stage compressor combustion engine structure
Advantage and demand.
The technical scheme adopted by the utility model for solving the technical problem is:
A kind of single-stage segmented centrifugal compressor impeller structure, including armature spindle and be sequentially arranged on the armature spindle
The first impeller section, the second impeller section and third impeller section, which is characterized in that
First impeller section, the second impeller section and third impeller section include the impeller disk and are evenly distributed described
Multiple blades on the impeller disk are equipped with step fitting surface, first impeller section, the second impeller section on each impeller disk
Integral, the third impeller section is assembled using the step fitting surface radial interference fit on its impeller disk with third impeller section
The impeller disk and the armature spindle radial interference fit and circumferential power transmission is carried out using spline structure；
The outside setting one of first impeller section is set in tapered sleeve on the armature spindle, tapered sleeve mistake radially
It is full of and is fitted on the outside step fitting surface of first impeller section；
The outside setting one of the tapered sleeve is set in the axle envelope on the armature spindle, and the axle envelope is by screw threads for fastening in institute
It states on armature spindle, and compresses the tapered sleeve in the axial direction, and radially mounted between the axle envelope and armature spindle have at least two
To prevent the spacer pin of axle envelope thread looseness；
Second impeller section, the blade quantity of third impeller section are equal and connect one to one on circumferential position, and
Second impeller section, third impeller section blade passage continuously arrange in the axial direction, second impeller section, third leaf
Duan Qi blade junction is taken turns, one is offered on the axially external edge of blade and extends downward into not a half leaf from vane tip
The V-groove of high length, second impeller section, third impeller section blade junction V-groove complement each other to form a closing
The mounting groove extended along blade height direction, the top of the mounting groove places a rigid rod, and a flexible rod is placed in lower part,
The blade quantity of first impeller section is less than the blade quantity of second impeller section, third impeller section, and institute
The blade for stating the first impeller section misplaces with the blade of second impeller section in the circumferential to be arranged, and the leaf of first impeller section
Piece import molded line uses bending molded line.
Preferably, the spacer pin is evenly distributed or non-uniformly distributed, and quantity is even number or odd number.
Preferably, first impeller section, the second impeller section be all made of stainless steel material preparation, and surface be coated with it is anti-
Rotten coating.
Preferably, the third impeller section is prepared using titanium alloy material.
Preferably, the first impeller section blade quantity is 16, the number of blade of second impeller section, third impeller section
Amount is 32.
Preferably, the base angle aperture of the V-groove is 30~120 °.
Preferably, the rigid rod is stainless steel bar, and the flexible rod is silicon rubber bar.
Preferably, the stainless steel bar diameter 2mm, height 16mm；Silicon rubber bar diameter 2mm, height 20mm.
Preferably, the vane inlet molded line of first impeller section and the angle of vertical direction are acute angle.
Preferably, the blade of first impeller section is using change torsion angle and obliquity structure.
Compared with the existing technology, in the single-stage segmented centrifugal compressor impeller structure of the utility model, in free state
When, rigid rod center line is located at V-groove top surface hereinafter, flexible rod center line is slightly above V-groove top surface.Rigid rod is to provide week
To power transmission, flexible rod is to the processing between vibration damping and two V-grooves of adjusting and rigid rod, equipment error；Since impeller is closer to outer
Gauge structure rigidity becomes smaller, therefore rigid rod is placed in the outer part, and when work can also play reinforced blade, prevents hot shaping, mentions
The high rigidity of structure.Third impeller section arranges that temperature is higher close to blower outlet, and material uses titanium alloy, to guarantee that part is rigid
Intensity, and be conducive to mitigate the weight of impeller entirety.First impeller section entrance molded line uses bending molded line, and traditional design uses
Straight flange molded line, bending molded line are conducive to increase air inlet section product, and more gas through-flows can be made to enter inner flow passage.
Detailed description of the invention
Fig. 1 is the single-stage segmented centrifugal compressor impeller structural schematic diagram of the utility model；
Fig. 2 is the blade profile front view of the first impeller section；
Fig. 3 is the V-groove structural schematic diagram of second and third impeller section blade；
Fig. 4 is the blade construction schematic diagram of the first impeller section；
Fig. 5 is the circumferential position relation schematic diagram of each impeller section blade.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, develop simultaneously implementation referring to the drawings
The utility model is further described in example.
As shown in Figure 1, the single-stage segmented centrifugal compressor impeller structure of the utility model, including armature spindle 4 and according to
Secondary the first impeller section 1 being arranged on armature spindle 4, the second impeller section 2 and third impeller section 3, the first impeller section 1 is close to compressor
Import arrangement, third impeller section 3 close to compressor outlet arrange, the first impeller section 1, the second impeller section 2 and third impeller
Section 3 includes the impeller disk and is evenly distributed multiple blades on the impeller disk, and step assembly is equipped on each impeller disk
Face, the first impeller section 1, the second impeller section 2 and third impeller section 3 are matched using the step fitting surface radial interference on its impeller disk
It attaches together with integrally, the impeller disk and 4 radial interference fit of armature spindle of third impeller section 3 are simultaneously carried out using 8 structure of spline circumferential
Power transmission；The outside setting one of first impeller section 1 is set in the tapered sleeve 5 on armature spindle 4, and tapered sleeve 5 is interference fitted installation radially
On the outside step fitting surface of the first impeller section 1；The outside setting one of tapered sleeve 5 is set in the axle envelope 6 on armature spindle 4, axis
Envelope 6 passes through screw threads for fastening on armature spindle 4, and compresses tapered sleeve 5 in the axial direction, and radially mounted between axle envelope 6 and armature spindle 4
There is at least two spacer pins 7 to prevent 6 thread looseness of axle envelope, spacer pin 7 is evenly distributed or non-uniformly distributed, and quantity is even number
Or odd number.As shown in Figure 1,3, the second impeller section 2, the blade quantity of third impeller section 3 are equal and one a pair of on circumferential position
It should connect, and the blade passage of the second impeller section 2, third impeller section 3 is continuously arranged in the axial direction, the second impeller section 2,
Trilobed wheel section 3 offers one on the axially external edge of blade and extends downward into from vane tip in its blade junction
The V-groove of the not a half high length of leaf, the base angle aperture of V-groove are 30~120 ° preferably 90 °, the second impeller section 2, third impeller section
The V-groove of 3 blade junctions complements each other to form a closed mounting groove extended along blade height direction, the top of mounting groove
A rigid rod 9 is placed, a flexible rod 10 is placed in lower part, and rigid rod 9 is, for example, stainless steel bar, and flexible rod 10 is silicon rubber bar, no
Become rusty rod iron diameter 2mm, height 16mm；Silicon rubber bar diameter 2mm, height 20mm,
Rigid rod 9 to provide the circumferential power transmission between the second impeller section 2,3 blade of third impeller section, flexible rod 10 to
Processing, equipment error between vibration damping and two V-grooves of adjusting and rigid rod 9.As shown in Fig. 2,5, the blade quantity of the first impeller section 1
Less than the second impeller section 2, the blade quantity of third impeller section 3, for example, 1 blade quantity of the first impeller section is 16, the second impeller
Section 2, the blade quantity of third impeller section 3 are 32, and the blade of the first impeller section 1 in the circumferential with the second impeller section 2
Blade dislocation arrangement, and the vane inlet molded line of the first impeller section 1 uses bending molded line, as shown in figure 4, the first impeller section 1
The angle of vane inlet molded line and vertical direction is acute angle, it is preferable that the acute angle is 14.5 °, and the blade of the first impeller section 1 is into one
Step is using torsion angle and obliquity structure is become, with the rectification of accelerating charge stream, pressurization.
In the single-stage segmented centrifugal compressor impeller structure of the utility model, in free state, 9 center line of rigid rod
Positioned at V-groove top surface hereinafter, 10 center line of flexible rod is slightly above V-groove top surface.Rigid rod 9 is flexible to provide circumferential power transmission
Stick 10 is to the processing between vibration damping and two V-grooves of adjusting and rigid rod 9, equipment error；Since impeller is rigid closer to outside diameter structure
Degree becomes smaller, therefore rigid rod 9 is placed in the outer part, and when work can also play reinforced blade, prevents hot shaping, and it is rigid to improve structure
Degree.First impeller section 1, the second impeller section 2 are all made of stainless steel material preparation, and surface is coated with corrosion-inhibiting coating, third leaf
It takes turns section 3 to prepare using titanium alloy material, third impeller section 3 arranges that temperature is higher close to blower outlet, and material is closed using titanium
Gold to guarantee local stiffness, and is conducive to mitigate the weight of impeller entirety.First impeller section, 1 entrance molded line uses bending-type
Line, and traditional design uses straight flange molded line, bending molded line is conducive to increase air inlet section product, and more gas through-flows can be made to enter
Inner flow passage.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent substitution, improvement and etc. done should be included in the utility model
Within the scope of.
Claims (10)
1. a kind of single-stage segmented centrifugal compressor impeller structure, including armature spindle and is sequentially arranged on the armature spindle
First impeller section, the second impeller section and third impeller section, which is characterized in that
First impeller section, the second impeller section and third impeller section include the impeller disk and are evenly distributed in the impeller
Multiple blades on disk are equipped with step fitting surface, first impeller section, the second impeller section and on each impeller disk
Trilobed wheel section assembles integral, the leaf of the third impeller section using the step fitting surface radial interference fit on its impeller disk
Wheel disc and the armature spindle radial interference fit simultaneously carry out circumferential power transmission using spline structure；
The outside setting one of first impeller section is set in the tapered sleeve on the armature spindle, and the tapered sleeve radially match by interference
Conjunction is mounted on the outside step fitting surface of first impeller section；
The outside setting one of the tapered sleeve is set in the axle envelope on the armature spindle, and the axle envelope is by screw threads for fastening at described turn
On sub- axis, and compress the tapered sleeve in the axial direction, and between the axle envelope and armature spindle it is radially mounted have at least two to
Prevent the spacer pin of axle envelope thread looseness；
Second impeller section, the blade quantity of third impeller section are equal and connect one to one on circumferential position and described
Second impeller section, third impeller section blade passage continuously arrange in the axial direction, second impeller section, third impeller section
In its blade junction, one is offered on the axially external edge of blade, and from vane tip to extend downward into not a half leaf height long
The V-groove of degree, second impeller section, third impeller section blade junction V-groove to complement each other to form one closed along leaf
A rigid rod is placed on the mounting groove that piece short transverse extends, the top of the mounting groove, and a flexible rod is placed in lower part,
The blade quantity of first impeller section is less than the blade quantity of second impeller section, third impeller section, and described the
The blade of one impeller section in the circumferential with the blade of second impeller section misplace arrange, and the blade of first impeller section into
Shape of the mouth as one speaks line uses bending molded line.
2. single-stage segmented centrifugal compressor impeller structure according to claim 1, which is characterized in that the spacer pin edge
Circumferential uniformly distributed or non-uniformly distributed, quantity is even number or odd number.
3. single-stage segmented centrifugal compressor impeller structure according to claim 1, which is characterized in that first impeller
Section, the second impeller section are all made of stainless steel material preparation, and surface is coated with corrosion-inhibiting coating.
4. single-stage segmented centrifugal compressor impeller structure according to claim 1, which is characterized in that the third impeller
The preparation of Duan Caiyong titanium alloy material.
5. single-stage segmented centrifugal compressor impeller structure according to claim 1, which is characterized in that first impeller
Section blade quantity be 16, second impeller section, third impeller section blade quantity be 32.
6. single-stage segmented centrifugal compressor impeller structure according to claim 1, which is characterized in that the V-groove
Base angle aperture is 30~120 °.
7. single-stage segmented centrifugal compressor impeller structure according to claim 1, which is characterized in that the rigid rod is
Stainless steel bar, the flexible rod are silicon rubber bar.
8. single-stage segmented centrifugal compressor impeller structure according to claim 7, which is characterized in that the stainless steel bar
Diameter 2mm, height 16mm；Silicon rubber bar diameter 2mm, height 20mm.
9. single-stage segmented centrifugal compressor impeller structure according to claim 1, which is characterized in that first impeller
The vane inlet molded line of section and the angle of vertical direction are acute angle.
10. single-stage segmented centrifugal compressor impeller structure according to claim 1, which is characterized in that first leaf
The blade of section is taken turns using change torsion angle and obliquity structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821054575.1U CN208456913U (en) | 2018-07-04 | 2018-07-04 | A kind of single-stage segmented centrifugal compressor impeller structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821054575.1U CN208456913U (en) | 2018-07-04 | 2018-07-04 | A kind of single-stage segmented centrifugal compressor impeller structure |
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| Publication Number | Publication Date |
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| CN208456913U true CN208456913U (en) | 2019-02-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757559A (en) * | 2018-07-04 | 2018-11-06 | 大连派思透平动力科技有限公司 | A kind of single-stage segmented centrifugal compressor impeller structure |
| CN112211756A (en) * | 2020-09-26 | 2021-01-12 | 昆明云内动力股份有限公司 | Low-pressure EGR system and gas flow control method |
-
2018
- 2018-07-04 CN CN201821054575.1U patent/CN208456913U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757559A (en) * | 2018-07-04 | 2018-11-06 | 大连派思透平动力科技有限公司 | A kind of single-stage segmented centrifugal compressor impeller structure |
| CN108757559B (en) * | 2018-07-04 | 2024-07-09 | 大连欧谱纳透平动力科技有限公司 | Impeller structure of single-stage sectional centrifugal compressor |
| CN112211756A (en) * | 2020-09-26 | 2021-01-12 | 昆明云内动力股份有限公司 | Low-pressure EGR system and gas flow control method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 116610 No. 73, Zhenpeng industrial city, Dalian Economic and Technological Development Zone, Liaoning Province Patentee after: Dalian oppner Turbine Power Technology Co.,Ltd. Address before: 116610 No. 73, Zhenpeng industrial city, Dalian Economic and Technological Development Zone, Liaoning Province Patentee before: DALIAN ENERGAS TURBINE POWER TECHNOLOGY Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190201 |