CN206682040U - A kind of centrifugal compressed machine rotor - Google Patents
A kind of centrifugal compressed machine rotor Download PDFInfo
- Publication number
- CN206682040U CN206682040U CN201720413613.7U CN201720413613U CN206682040U CN 206682040 U CN206682040 U CN 206682040U CN 201720413613 U CN201720413613 U CN 201720413613U CN 206682040 U CN206682040 U CN 206682040U
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- main shaft
- impeller
- machine rotor
- compressed machine
- locking ring
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Abstract
The utility model provides a kind of centrifugal compressed machine rotor, it is arranged in centrifugal compressor, including main shaft, multiple impellers, multiple impellers coaxially sequentially pass through interference fit and are fixed on main shaft, the shaft shoulder to match with impeller is provided with main shaft, wherein, different from the axle journal of other impellers, the diameter of impeller installation place and the axle journal of impeller on main shaft match the axle journal of at least one impeller in multiple impellers.By setting the impeller of different axle journals to adjust the discharge coefficient of centrifugal compressor.Centrifugal compressed machine rotor provided by the utility model avoids to be adjusted to the overall dimension of standard impeller, using the same centrifugal compressor internal lobe axle journal of change, and coordinates the mode for changing respective major axes diameter, the discharge coefficient of centrifugal compressor is adjusted.Accurate using centrifugal compressed machine rotor of the present utility model regulation discharge coefficient, structure design is simple, reduces the design difficulty of centrifugal compressor.
Description
Technical field
Centrifugal compressor rotor structure technical field is the utility model is related to, in particular to one kind centrifugation pressure
Contracting machine rotor.
Background technology
It is well known that in centrifugal compressor evolution, the R ＆ D design of Stage is very crucial, and centrifugal compressor is new
Research and development of products design depends on corresponding centrifugal compressor Stage.In the prior art, to centrifugal compressed machine rotor
Impeller when carrying out type selecting, generally ratio adjustment is carried out to the overall dimension of standard impeller Stage, modelling go out nonstandard impeller,
To reach the purpose of adjustment impeller discharge coefficient.It is difficult but the nonstandard impeller after modelling adds design error and design difficulty
Accurately to control discharge coefficient.
The technical problem of present urgent need to resolve is how to set a kind of centrifugal compressed machine rotor, and the centrifugal compressed machine rotor can
Avoid defect present in above-mentioned prior art.
Utility model content
The purpose of this utility model is solve above-mentioned deficiency of the prior art, there is provided one kind is by adjusting impeller axle journal
The mode of size adjusts the centrifugal compressed machine rotor of discharge coefficient, avoids design and calculation error caused by the nonstandard impeller of modelling.
The purpose of this utility model is by following technical solution：A kind of centrifugal compressed machine rotor, is arranged at centrifugal compressor
In, including main shaft, multiple impellers, multiple impellers coaxially sequentially pass through interference fit and are fixed on main shaft, be provided with main shaft
The shaft shoulder to match with impeller, the shaft shoulder to impeller along main shaft axial limiting, in multiple impellers the axle journal of at least one impeller different from
The axle journal of other impellers, by setting the impeller of different axle journals to adjust the discharge coefficient of centrifugal compressor.
Further, axle sleeve is provided between adjacent two impeller, axle sleeve is fixed on main shaft by interference fit.
Further, interference fit is provided with two balancing frames on main shaft, and multiple impellers are placed between two balancing frames, balance
Disk is arranged on main shaft by interference fit.
Further, balancing frame is provided with locking ring on main shaft, locking ring is arranged at balancing frame different from impeller
Side.
Further, the opening position for locking ring being installed on main shaft is provided with external screw thread, and locking ring is provided with internal thread, locking
Ring coordinates with the external screw thread on main shaft to be fixed on main shaft.
Further, the opening position for locking ring being installed on main shaft is provided with fixing hole, and pin-and-hole is provided with locking ring, locks
Ring with detent fit by being fixed on main shaft.
Further, axial width of the impeller along main shaft is the first length, and axial width of the axle sleeve along main shaft is the second length
Degree, the summation of the first length and the second length is definite value.
Further, there is the first fixing groove along the axially arranged of main shaft on the inside of the wheel disc of impeller, the outside of main shaft is along main shaft
It is axially arranged have the second fixing groove, the first fixing groove fixes impeller with the second fixing groove fit key.
Further, axially projecting limited location post of the locking ring along main shaft, along the axially arranged of main shaft on the wheel disc of impeller
Limited location through hole, limited post insertion limiting through hole simultaneously coordinate lock silk to fix impeller.
Centrifugal compressed machine rotor provided by the utility model is by by least one impeller in same centrifugal compressor
Axle journal is designed as the mode different from other impeller axle journals, avoids the overall dimension of adjustment standard impeller, same using changing
Centrifugal compressor inner impeller axle journal, and coordinate the mode for changing respective major axes diameter, the discharge coefficient of centrifugal compressor is carried out
Regulation.Accurate, the structure design using centrifugal compressed machine rotor of the present utility model regulation centrifugal compressor Stage discharge coefficient
Simply, the design difficulty of centrifugal compressor Stage is reduced.
Brief description of the drawings
Fig. 1 is the structural representation of centrifugal compressed machine rotor preferred embodiment of the present utility model；
Fig. 2 is the structural representation of another preferred embodiment of centrifugal compressed machine rotor of the present utility model.
Reference：
1- main shafts；The impellers of 21- first；The impellers of 22- second；The axle sleeves of 31- first；
The axle sleeves of 32- second；4- balancing frames；5- locking rings；6- pins.
The 7- shaft shoulders.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with of the present utility model excellent
The accompanying drawing in embodiment is selected, the technical scheme in the embodiment of the utility model is further described in more detail.In the accompanying drawings, certainly
Begin to same or similar label eventually to represent same or similar element or there is the element of same or like function.Described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Below with reference to the implementation of accompanying drawing description
Example is exemplary, it is intended to for explaining the utility model, and it is not intended that to limitation of the present utility model.Based on this practicality
Embodiment in new, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of the utility model protection.Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
In the description of the present embodiment, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of description the present embodiment and simplifies description, rather than indicates or imply meaning
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present embodiment
The limitation of protection domain.
Embodiment 1
With reference to Fig. 1-Fig. 2, to solve to need modelling to go out nonstandard impeller in the design process in centrifuge rotor in the prior art
Difficult design present in regulation discharge coefficient, easily there is the defects of wrong, the present embodiment provides a kind of centrifugal compressor and turned
Son, it is arranged in centrifugal compressor, including main shaft 1, multiple impellers (including the first impeller 21 and second impeller 22), multiple impellers
Coaxially sequentially pass through interference fit to be fixed on main shaft 1, the shaft shoulder 7 to match with impeller is provided with main shaft 1, wherein, it is more
The axle journal of at least one impeller is different from the axle journal of other impellers, the diameter and impeller of the impeller installation place on main shaft 1 in individual impeller
Axle journal match.By setting the impeller of different axle journals to adjust the discharge coefficient of centrifugal compressor.Discharge coefficient refers to unit
Pipeline keeps constant pressure in time, in test condition, and pipeline medium flows through the volume flow of valve, or quality stream
Amount, i.e. the maximum flow ability of valve.
Both stage impellers are set to be briefly described in involved centrifugal compressed machine rotor in the present embodiment.First impeller 21
Journal size be less than the journal size of the second impeller 22, the first impeller 21 and the second impeller 22 pass through interference fit fixed installation
On main shaft 1, the diameter of the main shaft 1 of the installed position of first impeller 21 is less than the main shaft 1 at the second impeller 22 on main shaft 1
Diameter, but the first impeller 21 is identical with the diameter of the wheel disc of the second impeller 22, and this just makes the medium institute at the first impeller 21
The space at place be more than medium at the second impeller 22 place space, because medium is at first the 21 to the second impeller of impeller 22
Space reduces, and pressure medium increase, motion of the medium in centrifugal compressor can be hindered, so as to cause the flow of centrifugal compressor
The reduction of coefficient.Conversely, when the journal size of the first impeller 21 is more than the journal size of the second impeller 22, medium is from the first impeller
Time space is flow at the second impeller 22 at 21 to increase, the pressure of medium reduces, and is advantageous to the circulation of medium, so as to cause from
The discharge coefficient increase of heart compressor.
The shaft shoulder 7 to match with impeller is provided with main shaft 1, first is fixedly mounted by being interference fitted on main shaft 1
The impeller 22 of impeller 21 and second, axially produced relatively along main shaft 1 on main shaft 1 to limit the first impeller 21 and the second impeller 22
Motion, the shaft shoulder 7 to match with its position, size is set on main shaft 1, the first impeller 21 and second can be limited by the shaft shoulder 7
An end motion of the impeller 22 to main shaft 1, avoid the first impeller 21 and the second impeller 22 in rotor rotation process due to medium
Pressure is different to promote the first impeller 21 and the second impeller 22 to be moved to a side of main shaft, ensures structure safety, avoids not at the same level
Structural damage caused by producing form touch between impeller.
Further, the present embodiment provide centrifugal compressed machine rotor be provided between adjacent two impeller axle sleeve (including
First axle sleeve 31 and the second axle sleeve 32), the first axle sleeve 31 and the second axle sleeve 32 are fixed on main shaft 1 by interference fit.In master
First axle sleeve 31 is set between the impeller on axle 1 and the second axle sleeve 32 has further ensured relative distance between impeller, is avoided
Centrifugal compressed machine rotor can produce constructive interference caused by collision in the process of running between the first impeller 21 and the second impeller 22,
Ensure the safe for operation of centrifugal compressed machine rotor.By the first axle sleeve 31 and the second axle sleeve 32 further by the first impeller 21 and
Two impellers 22 are against on the shaft shoulder 7 on main shaft 1, limit the first impeller 21 and the second impeller 22 produces relative motion with main shaft 1.
Further, interference fit is provided with two balancing frames 4 on main shaft 1, and the first impeller 21 is placed in the second impeller 22
Between two balancing frames 4, balancing frame 4 is arranged on main shaft 1 by interference fit.Balancing frame 4 is placed in behind impeller (high
Pressure side) disk, partly disappeared rotor axial to centrifugal compressor using axial thrust caused by the pressure difference of the both sides gas of balancing frame 4
Power.Its lateral pressure, is almost the gas pressure (high pressure) in impeller wheel dish gap, its opposite side be often with
The induction chamber connection of machine, pressure is atmospheric pressure or admission pressure (low pressure).Above-mentioned pressure at both sides difference just makes rotor by one
The reverse power with axial force, its size are decided by the lifting surface area of balancing frame.The cylindrical of balancing frame is equipped with sealing device, so that disk
Maintain pressure difference.In order to avoid the play back and forth of centrifugal compressed machine rotor during work.
Further, balancing frame 4 is provided with locking ring 5 on main shaft, locking ring 5 is arranged at balancing frame 4 different from leaf
The side of wheel.The purpose that this device of locking ring 5 is set on main shaft is to limit balancing frame 4 by the fixedly locked ring 5 of main shaft 1
Axial relative motion is produced along main shaft 1, it is ensured that the structural stability during centrifugal compressor rotor operation.
Further, the opening position for locking ring 5 being installed on main shaft 1 is provided with external screw thread, and locking ring 5 is provided with internal thread,
Locking ring 5 coordinates with the external screw thread on main shaft 1 to be fixed on main shaft 1.It may further be preferable that the hand of spiral of locking ring 5 with
The rotation direction of centrifugal compressed machine rotor is on the contrary, so, centrifugal compressed machine rotor locking ring 5 in rotation process would not produce
The phenomenon of disengaging.
The centrifugal compressed machine rotor that the present embodiment provides is avoided during the use of design centrifugal compressor Stage
Adjust the size of whole standard impellers；By using the same centrifugal compressor inner impeller axle journal of change, and coordinate change corresponding main
The mode of shaft diameter, the discharge coefficient of centrifugal compressor is adjusted.Using centrifugal compressor Stage of the present utility model
Regulation discharge coefficient is accurate, and structure design is simple, reduces the design difficulty of centrifugal compressor.
Embodiment 2
The centrifugal compressed machine rotor provided with reference to embodiment 1, the centrifugal compressor locked rotor ring 5 that embodiment provides is along master
The axially projecting limited location post of axle 1, along the axially arranged limited location through hole of main shaft on balancing frame, limited post insertion limiting through hole is simultaneously
Coordinate lock silk stable equilibrium disk.Locking ring 5 is fixed on main shaft 1, will not be produced relative rotation between main shaft 1, in locking ring 5
Setting limited post is protruded above, limited post is inserted in the limiting through hole of balancing frame 4, on the basis that balancing frame 4 and main shaft 1 are interference fitted
On further consolidated balancing frame 4, avoid it from being produced relative rotation between main shaft 1.
Embodiment 3
The centrifugal compressed machine rotor provided with reference to embodiment 1, embodiment 2, the centrifugal compressed machine rotor that the present embodiment provides
Main shaft 1 on the opening position of locking ring 5 be installed be provided with fixing hole, be provided with pin-and-hole on locking ring 5, locking ring 5 pass through with it is fixed
Position pin 6, which coordinates, to be fixed on main shaft 1.The locking ring 5 for the centrifugal compressed machine rotor that the present embodiment provides can be in embodiment 1
The screwed, locking ring 5 that is connected by screw thread with main shaft 1 or do not have threaded cyclic structure, being applied in does not have
The locking ring 5 for the cyclic structure being threaded is provided with least two pin-and-holes, and pin-and-hole is uniformly arranged along locking ring 5 is circumferential.Meanwhile
In order to coordinate locking ring to be fixed on main shaft 1, fixing hole is provided with main shaft 1, the fixing hole can run through the axle of main shaft 1
Line, can also be but equal with the pin-and-hole quantity on locking ring 5 not through the axis of main shaft 1, to ensure that locking ring 5 is enclosed on master
It can stablize on axle 1 and not produce skew.
Axial displacement restriction is carried out to impeller and balancing frame 4 using the locking ring 5 provided in the present embodiment, convenient disassembly,
It is workable, only it need to change one of structural member after locking ring 5 or the structural failure of alignment pin 6.Relative to reality
The mode being connected through a screw thread in example 1 is applied, needs to change locking ring 5 or main shaft 1 after the damage of its screw thread, is provided in the present embodiment
The possibility of changing main-spindle 1 is lower existing for the mode of pin joint, has saved tool of production cost.
Impeller (including the first impeller 21 and second impeller 22 shown in figure) is along the axle of main shaft 1 in embodiment 1- embodiments 3
It is the first length to width, axle sleeve (including the first axle sleeve 31 shown in figure and second axle sleeve 32) is along the axial width of main shaft 1
Second length, the summation of the first length and the second length is definite value.The definite value for main shaft 1 top (not shown in figure, but not shadow
The distance between ring understanding to technical scheme) to balancing frame 4.It is fixed that this is reached by the length of the width and axle sleeve that adjust impeller
Value, make impeller fixed on main shaft 1, avoid producing the axial direction generation relative motion along main shaft 1.
There is the first fixing groove along the axially arranged of main shaft on the inside of the wheel disc of impeller, the axial direction of the outside of main shaft 1 along main shaft 1 is set
The second fixing groove is equipped with, the first fixing groove is fixed on impeller on main shaft with the second fixing groove fit key.By above-mentioned design,
Impeller further limit circumference of the impeller along main shaft 1 on the basis of being interference fitted with main shaft 1 and produce relative rotation.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (9)
1. a kind of centrifugal compressed machine rotor, is arranged in centrifugal compressor, it is characterised in that multiple including main shaft, multiple impellers
The impeller coaxially sequentially passes through interference fit and is fixed on the main shaft, is provided with the main shaft and the impeller phase
The shaft shoulder matched somebody with somebody, wherein, the axle journal of at least one impeller is different from the axle journal of impeller other described, the main shaft in multiple impellers
On the axle journal of diameter and the impeller of the impeller installation place match.
2. centrifugal compressed machine rotor as claimed in claim 1, it is characterised in that be provided with axle between adjacent two impellers
Set, the axle sleeve are fixed on the main shaft by interference fit.
3. centrifugal compressed machine rotor as claimed in claim 1, it is characterised in that interference fit is provided with two on the main shaft
Balancing frame, multiple impellers are placed between two balancing frames, and the balancing frame is arranged on the main shaft by interference fit
On.
4. centrifugal compressed machine rotor as claimed in claim 3, it is characterised in that set on the main shaft close to the balancing frame
Locking ring is equipped with, the locking ring is arranged at side of the balancing frame different from the impeller.
5. centrifugal compressed machine rotor as claimed in claim 4, it is characterised in that axial direction of the locking ring along the main shaft is convex
Go out limited location post, it is described spacing along the axially arranged limited location through hole of the main shaft, the limited post insertion on the balancing frame
Through hole simultaneously coordinates lock silk to fix the balancing frame.
6. centrifugal compressed machine rotor as claimed in claim 4, it is characterised in that the position of the locking ring is installed on the main shaft
The place of putting is provided with external screw thread, and the locking ring is provided with internal thread, and the locking ring is matched somebody with somebody with the external screw thread on the main shaft
Conjunction is fixed on the main shaft.
7. the centrifugal compressed machine rotor as any one of claim 4-6, it is characterised in that on the main shaft described in installation
The opening position of locking ring is provided with fixing hole, is provided with pin-and-hole on the locking ring, the locking ring by with detent fit
It is fixed on the main shaft.
8. centrifugal compressed machine rotor as claimed in claim 2, it is characterised in that axial width of the impeller along the main shaft
For the first length, axial width of the axle sleeve along the main shaft is the second length, and the summation of the first length and the second length is
Definite value.
9. centrifugal compressed machine rotor as claimed in claim 1, it is characterised in that along the main shaft on the inside of the wheel disc of the impeller
It is axially arranged have the first fixing groove, there is the second fixing groove in the outside of the main shaft along the axially arranged of the main shaft, described
One fixing groove is fixed on the impeller on the main shaft with the second fixing groove fit key.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720413613.7U CN206682040U (en) | 2017-04-19 | 2017-04-19 | A kind of centrifugal compressed machine rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720413613.7U CN206682040U (en) | 2017-04-19 | 2017-04-19 | A kind of centrifugal compressed machine rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206682040U true CN206682040U (en) | 2017-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720413613.7U Active CN206682040U (en) | 2017-04-19 | 2017-04-19 | A kind of centrifugal compressed machine rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206682040U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980087A (en) * | 2018-09-20 | 2018-12-11 | 重庆通用工业(集团)有限责任公司 | A kind of adaptively folding valving and centrifugal fan |
| CN110417147A (en) * | 2019-05-20 | 2019-11-05 | 天津市天发重型水电设备制造有限公司 | A kind of improved rotor field spider hot jacket assembling structure |
-
2017
- 2017-04-19 CN CN201720413613.7U patent/CN206682040U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980087A (en) * | 2018-09-20 | 2018-12-11 | 重庆通用工业(集团)有限责任公司 | A kind of adaptively folding valving and centrifugal fan |
| CN108980087B (en) * | 2018-09-20 | 2024-03-08 | 重庆通用工业(集团)有限责任公司 | Self-adaptive opening and closing valve device and centrifugal ventilator |
| CN110417147A (en) * | 2019-05-20 | 2019-11-05 | 天津市天发重型水电设备制造有限公司 | A kind of improved rotor field spider hot jacket assembling structure |
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