CN209228692U - Impeller locking device for centrifugal compressor - Google Patents
Impeller locking device for centrifugal compressor Download PDFInfo
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- CN209228692U CN209228692U CN201821888689.6U CN201821888689U CN209228692U CN 209228692 U CN209228692 U CN 209228692U CN 201821888689 U CN201821888689 U CN 201821888689U CN 209228692 U CN209228692 U CN 209228692U
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- impeller
- main shaft
- keyway
- pedestal
- centrifugal compressor
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Abstract
The utility model discloses the impeller locking devices for centrifugal compressor, belong to compressor field, including impeller, main shaft, pedestal, key and locking nut, impeller keyway is set on the inner wall of the axis hole of impeller, main shaft keyway corresponding with impeller keyway is set on the outer surface of main shaft, the radial section of impeller keyway and main shaft keyway is smooth curve, main shaft includes the end of thread and shaft shoulder end, external screw thread is provided on the end of thread, the shaft shoulder is provided with the shaft shoulder on end, pedestal and hydraulic jack are provided on pedestal, setting is applied to the effect ring of locking nut active force in the middle part of pedestal, hydraulic jack is symmetricly set on pedestal two sides, the mandrel ends of hydraulic jack are fixedly installed the jacking block for acting on impeller outer ring, locking nut is internally provided with internal screw thread matched with external screw thread.The utility model has many advantages, such as not easily causing locking nut to damage and improve impeller intensity when more convenient, locking when tightly locking.
Description
Technical field
The utility model belongs to compressor field, and in particular to the impeller locking device for centrifugal compressor.
Background technique
Currently, Centrufugal compressor impeller mostly uses doubly linked structure, and for using pretension bolt to be fastenedly connected
How structure guarantees to reach expected coupling mechanism force in technique, becomes the problem of assembly technology.Traditional process is to exert oneself
Square spanner tightens locking nut, and this method operation is laborious, and the size of pretightning force is not easy to hold, and be easy to cause locking screw
Cooperation tension between female and impeller shaft was pine.
Chinese patent notification number discloses one kind on January 6th, 2010 for the prior art of " CN201377466 " and is used for
The locking device of centrifugal compressor impeller, technical solution are as follows: the impeller includes impeller shaft and is threadedly connected to impeller shaft
On locking nut, particularly, locking device includes: piston, and one end is connected through a screw thread to impeller shaft and and locking nut
Relatively；Driving instrument is connect with piston, and driving piston is mobile to stretch or discharge impeller shaft and driving lever, is matched with locking nut
It closes, for tightening locking nut when stretching impeller shaft.In actual use, although the patent can relatively accurately reach
To expected coupling mechanism force, but it remains the complex and unhandy defect of structure.
In actual use, although can relatively accurately reach expected coupling mechanism force, it is still deposited the patent
Structure is complex, the low and unhandy defect of impeller intensity.
Summary of the invention
The purpose of this utility model is to provide do not easily cause locking nut to damage and improve when being more convenient, locking when tight lock
The impeller locking device for centrifugal compressor of impeller intensity.
The purpose of this utility model is achieved through the following technical solutions:
For the impeller locking device of centrifugal compressor, including impeller and main shaft, it is characterised in that: further include pedestal, key
And locking nut, impeller keyway is set on the inner wall of the axis hole of the impeller, is arranged on the outer surface of the main shaft and impeller key
The radial section of the corresponding main shaft keyway of slot, the impeller keyway and main shaft keyway is smooth curve, and the main shaft includes spiral shell
Line end and shaft shoulder end are provided with external screw thread on the end of thread, the shaft shoulder are provided on the shaft shoulder end, is provided on the pedestal
Pedestal and hydraulic jack, pedestal middle part setting are applied to the effect ring of locking nut active force, the hydraulic jack
Pedestal two sides are symmetricly set on, the mandrel ends of the hydraulic jack are fixedly installed the jacking block for acting on impeller outer ring, institute
It states locking nut and is internally provided with internal screw thread matched with external screw thread.
Preferably, 2-4 main shaft keyways are set on the main shaft, and the multiple main shaft keyway is along the circumferential uniform of main shaft
Distribution.
Preferably, the key and impeller keyway are interference fitted.
Preferably, the key and main shaft keyway are point contact.
Preferably, the key is any shape during spherical, cylindrical and support is cylindrical.
Preferably, the main shaft keyway is arranged between shaft shoulder end and the end of thread.
Preferably, the quantity of the hydraulic jack is at least 2 sets.
Preferably, the jacking block is threadedly coupled with the mandril of hydraulic jack.
Preferably, locking hole is provided on the locking nut.
Preferably, the locking hole is at least arranged 4, uniform to be arranged on locking nut.
The technical program has the beneficial effect that:
One, the impeller locking device provided by the utility model for centrifugal compressor, including impeller, main shaft, pedestal, key
And locking nut, impeller keyway is set on the inner wall of the axis hole of impeller, and setting is corresponding with impeller keyway on the outer surface of main shaft
The radial section of main shaft keyway, impeller keyway and main shaft keyway is smooth curve, and main shaft includes the end of thread and shaft shoulder end, screw thread
It is provided with external screw thread on end, the shaft shoulder is provided on the shaft shoulder end, pedestal and hydraulic jack, pedestal middle part are provided on pedestal
The effect ring for being applied to locking nut active force is set, and hydraulic jack is symmetricly set on pedestal two sides, the top of hydraulic jack
Boom end is fixedly installed the jacking block for acting on impeller outer ring, and locking nut is internally provided with internal screw thread matched with external screw thread；
The radial section of impeller keyway and main shaft keyway is smooth curve, effectively solves the problem of stress concentration of key cooperation, improves
Impeller intensity；It is first drawn high by hydraulic jack and acts on impeller outer ring, effect ring pushes forward locking nut, then tightens lock
Tight nut, smaller damage when tightening locking nut to locking nut itself.
Two, the impeller locking device provided by the utility model for centrifugal compressor comprehensively considers keyway to axis intensity
It slackens effect and improves the force environment of main shaft and key, 2-4 main shaft keyways are set on main shaft, multiple main shaft keyways are along main shaft
Circumferential direction be uniformly distributed.
Three, the impeller locking device provided by the utility model for centrifugal compressor, key are spherical, cylindrical and support circle
On the one hand any shape in cylindricality can reduce machining stress, on the other hand can change slidable fit to roll assembly, to subtract
Small friction and improvement assembly technology.
Four, the impeller locking device provided by the utility model for centrifugal compressor, the quantity of hydraulic jack is at least
It is 2 sets, can gently adjusts the deformation force of impeller, reduction causes to damage to impeller.
Five, the impeller locking device provided by the utility model for centrifugal compressor, the top of jacking block and hydraulic jack
Bar is threadedly coupled, and jacking block can be firmly fixed on the mandril of hydraulic jack, and can be convenient for changing top when jacking block damages
Block.
Six, the impeller locking device provided by the utility model for centrifugal compressor is provided with locking on locking nut
Lock screw after tightening locking nut, is screwed into the position of the fixed locking nut of locking hole, can recycle hydraulic jack by hole,
Hydraulic jack stress always is avoided, while also reducing the damage to locking nut itself.
Seven, the impeller locking device provided by the utility model for centrifugal compressor, locking hole are at least arranged 4,
Even setting is on locking nut, so that stress more evenly, is conducive to the position of fixed locking nut.
Detailed description of the invention
The utility model aforementioned and being detailed description below becomes more apparent upon when reading in conjunction with the following drawings, in attached drawing:
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model impeller；
Fig. 3 is the structural schematic diagram of the utility model main shaft and key；
Fig. 4 is the structural schematic diagram of the utility model locking nut；
Fig. 5 is the structural schematic diagram of the utility model pedestal；
In figure:
1, impeller；2, main shaft；3, pedestal；4, key；5, locking nut；6, impeller keyway；7, main shaft keyway；8, the shaft shoulder；9,
Pedestal；10, hydraulic jack；11, ring is acted on；12, jacking block；13, locking hole.
Specific embodiment
It is further illustrated below by several specific embodiments and realizes the utility model aim technical solution, needed
Bright, the technical solution of the requires of the utility model protection includes but is not limited to following embodiment.
Embodiment 1
As a kind of most basic embodiment of the utility model, present embodiment discloses the impellers for centrifugal compressor
Locking device, as Figure 1-Figure 5, including impeller 1, main shaft 2, pedestal 3, key 4 and locking nut 5, the axis hole of the impeller 1
Inner wall on impeller keyway 6 is set, setting main shaft keyway 7 corresponding with impeller keyway 6, described on the outer surface of the main shaft 2
The radial section of impeller keyway 6 and main shaft keyway 7 is smooth curve, and the main shaft 2 includes the end of thread and shaft shoulder end, the spiral shell
It is provided with external screw thread on line end, the shaft shoulder 8 is provided on the shaft shoulder end, is provided with pedestal 9 and hydraulic jack on the pedestal 3
10, setting is applied to the effect ring 11 of 5 active force of locking nut in the middle part of the pedestal 9, and the hydraulic jack 10 is symmetrical arranged
In 9 two sides of pedestal, the mandrel ends of the hydraulic jack 10 are fixedly installed the jacking block 12 for acting on 1 outer ring of impeller, described
Locking nut 5 is internally provided with internal screw thread matched with external screw thread.
Impeller locking device provided by the utility model for centrifugal compressor, including impeller 1, main shaft 2, pedestal 3, key
4 and locking nut 5, impeller keyway 6 is set on the inner wall of the axis hole of impeller 1, setting and impeller keyway 6 on the outer surface of main shaft 2
Corresponding main shaft keyway 7, the radial section of impeller keyway 6 and main shaft keyway 7 are smooth curve, main shaft 2 include the end of thread and
8 end of the shaft shoulder is provided with external screw thread on the end of thread, is provided with the shaft shoulder 8 on 8 end of the shaft shoulder, pedestal 9 and liquid are provided on pedestal 3
Jack 10 is pressed, setting is applied to the effect ring 11 of locking nut active force in the middle part of pedestal 9, and hydraulic jack 10 is symmetricly set on
9 two sides of pedestal, the mandrel ends of hydraulic jack 10 are fixedly installed the jacking block 12 for acting on 1 outer ring of impeller, in locking nut
Portion is provided with internal screw thread matched with external screw thread；The radial section of impeller keyway 6 and main shaft keyway 7 is smooth curve, effectively
The problem of stress concentration that key 4 cooperates is solved, 1 intensity of impeller is improved；It is first drawn high and is acted on outside impeller 1 by hydraulic jack 10
Circle, effect ring 11 push forward locking nut 5, then tighten locking nut 5, it is smaller when tightening locking nut 5 to locking nut 5
The damage of itself.
Embodiment 2
As a kind of preferred embodiment of the utility model, present embodiment discloses the impeller locks for centrifugal compressor
Tight device, as Figure 1-Figure 5, including impeller 1, main shaft 2, pedestal 3, key 4 and locking nut 5, the axis hole of the impeller 1
Impeller keyway 6 is set on inner wall, setting main shaft keyway 7 corresponding with impeller keyway 6, the leaf on the outer surface of the main shaft 2
The radial section of wheel key way 6 and main shaft keyway 7 is smooth curve, and the main shaft 2 includes the end of thread and shaft shoulder end, the screw thread
It is provided with external screw thread on end, the shaft shoulder 8 is provided on the shaft shoulder end, is provided with pedestal 9 and hydraulic jack on the pedestal 3
10, setting is applied to the effect ring 11 of 5 active force of locking nut in the middle part of the pedestal 9, and the hydraulic jack 10 is symmetrical arranged
In 9 two sides of pedestal, the mandrel ends of the hydraulic jack 10 are fixedly installed the jacking block 12 for acting on 1 outer ring of impeller, described
Locking nut 5 is internally provided with internal screw thread matched with external screw thread.
Preferably, 2-4 main shaft keyways 7, circumferential direction of the multiple main shaft keyway 7 along main shaft 2 are set on the main shaft 2
It is uniformly distributed.
Preferably, the key 4 is interference fitted with impeller keyway 6.
Preferably, the key 4 and main shaft keyway 7 are point contact.
Preferably, the key 4 is any shape during spherical, cylindrical and support is cylindrical.
Preferably, the main shaft keyway 7 is arranged between shaft shoulder end and the end of thread.
Preferably, the quantity of the hydraulic jack 10 is at least 2 sets.
Preferably, the jacking block 12 is threadedly coupled with the mandril of hydraulic jack 10, and the jacking block 12 uses plastic material.
Preferably, locking hole 13 is provided on the locking nut 5.
Preferably, the locking hole 13 is at least arranged 4, uniform to be arranged on locking nut 5.
Impeller locking device provided by the utility model for centrifugal compressor, including impeller 1, main shaft 2, pedestal 3, key
4 and locking nut 5, impeller keyway 6 is set on the inner wall of the axis hole of impeller 1, setting and impeller keyway 6 on the outer surface of main shaft 2
Corresponding main shaft keyway 7, the radial section of impeller keyway 6 and main shaft keyway 7 are smooth curve, main shaft 2 include the end of thread and
8 end of the shaft shoulder is provided with external screw thread on the end of thread, is provided with the shaft shoulder 8 on 8 end of the shaft shoulder, pedestal 9 and liquid are provided on pedestal 3
Jack 10 is pressed, setting is applied to the effect ring 11 of locking nut active force in the middle part of pedestal 9, and hydraulic jack 10 is symmetricly set on
9 two sides of pedestal, the mandrel ends of hydraulic jack 10 are fixedly installed the jacking block 12 for acting on 1 outer ring of impeller, in locking nut
Portion is provided with internal screw thread matched with external screw thread；The radial section of impeller keyway 6 and main shaft keyway 7 is smooth curve, effectively
The problem of stress concentration that key 4 cooperates is solved, 1 intensity of impeller is improved；It is first drawn high and is acted on outside impeller 1 by hydraulic jack 10
Circle, effect ring 11 push forward locking nut 5, then tighten locking nut 5, it is smaller when tightening locking nut 5 to locking nut 5
The damage of itself.
Comprehensively consider 4 slot of key to slacken effect to axis intensity and improve the force environment of main shaft 2 and key 4, be arranged on main shaft 2
2-4 main shaft keyways 7, multiple main shaft keyways 7 are uniformly distributed along the circumferential direction of main shaft 2.Key 4 is that spherical, cylindrical and support is cylindrical
In any shape, on the one hand can reduce machining stress, on the other hand can change slidable fit for roll assembly, with reduce rub
Wipe and improve assembly technology.The quantity of hydraulic jack 10 is at least 2 sets, can gently adjust the deformation force of impeller 1, reduction pair
Impeller 1 causes to damage.Jacking block 12 is threadedly coupled with the mandril of hydraulic jack 10, and jacking block 12 can be firmly fixed hydraulic thousand
On the mandril on jin top 10, and jacking block 12 can be convenient for changing when jacking block 12 damages.It is provided with locking hole 13 on locking nut 5, twists
After tight locking nut 5, lock screw is screwed into the position of the fixed locking nut 5 of locking hole 13, hydraulic jack 10 can be recycled,
The stress always of hydraulic jack 10 is avoided, while also reducing the damage to locking nut 5 itself.Locking hole 13 is at least arranged 4,
It is uniform to be arranged on locking nut 5, so that stress more evenly, is conducive to the position of fixed locking nut 5.
Claims (10)
1. being used for the impeller locking device of centrifugal compressor, including impeller (1) and main shaft (2), it is characterised in that: further include pedestal
(3), impeller keyway (6) are arranged on the inner wall of the axis hole of the impeller (1) in key (4) and locking nut (5), the main shaft (2)
Main shaft keyway (7) corresponding with impeller keyway (6), the radial direction of the impeller keyway (6) and main shaft keyway (7) are set on outer surface
Section is smooth curve, and the main shaft (2) includes the end of thread and shaft shoulder end, and external screw thread is provided on the end of thread, described
It is provided on the shaft shoulder end shaft shoulder (8), pedestal (9) and hydraulic jack (10), the pedestal (9) is provided on the pedestal (3)
The effect ring (11) for being applied to locking nut (5) active force is arranged in middle part, and the hydraulic jack (10) is symmetricly set on pedestal
(9) two sides, the mandrel ends of the hydraulic jack (10) are fixedly installed the jacking block (12) for acting on impeller (1) outer ring, institute
It states locking nut (5) and is internally provided with internal screw thread matched with external screw thread.
2. the impeller locking device according to claim 1 for centrifugal compressor, it is characterised in that: the main shaft (2)
2-4 main shaft keyways (7) of upper setting, the multiple main shaft keyway (7) are uniformly distributed along the circumferential direction of main shaft (2).
3. the impeller locking device according to claim 1 for centrifugal compressor, it is characterised in that: the key (4) with
Impeller keyway (6) interference fit.
4. the impeller locking device according to claim 1 for centrifugal compressor, it is characterised in that: the key (4) with
Main shaft keyway (7) is point contact.
5. the impeller locking device according to claim 1 for centrifugal compressor, it is characterised in that: the key (4) is
Any shape in spherical, cylindrical and support cylinder.
6. the impeller locking device according to claim 1 for centrifugal compressor, it is characterised in that: the main shaft keyway
(7) it is arranged between shaft shoulder end and the end of thread.
7. the impeller locking device according to claim 1 for centrifugal compressor, it is characterised in that: the hydraulic jack
The quantity on top (10) is at least 2 sets.
8. the impeller locking device according to claim 7 for centrifugal compressor, it is characterised in that: the jacking block (12)
It is threadedly coupled with the mandril of hydraulic jack (10).
9. the impeller locking device according to claim 1 for centrifugal compressor, it is characterised in that: the locking nut
(5) locking hole (13) are provided on.
10. the impeller locking device according to claim 9 for centrifugal compressor, it is characterised in that: the locking hole
(13) at least it is arranged 4, uniform setting is on locking nut (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821888689.6U CN209228692U (en) | 2018-11-16 | 2018-11-16 | Impeller locking device for centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821888689.6U CN209228692U (en) | 2018-11-16 | 2018-11-16 | Impeller locking device for centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209228692U true CN209228692U (en) | 2019-08-09 |
Family
ID=67503161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821888689.6U Active CN209228692U (en) | 2018-11-16 | 2018-11-16 | Impeller locking device for centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209228692U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209991A (en) * | 2018-11-16 | 2019-01-15 | 四川聚亿重工有限公司 | Impeller locking device for centrifugal compressor |
-
2018
- 2018-11-16 CN CN201821888689.6U patent/CN209228692U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209991A (en) * | 2018-11-16 | 2019-01-15 | 四川聚亿重工有限公司 | Impeller locking device for centrifugal compressor |
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