CN108895025A - It is a kind of can balance portion axial force air blower sealing structure of shaft end - Google Patents
It is a kind of can balance portion axial force air blower sealing structure of shaft end Download PDFInfo
- Publication number
- CN108895025A CN108895025A CN201810997759.XA CN201810997759A CN108895025A CN 108895025 A CN108895025 A CN 108895025A CN 201810997759 A CN201810997759 A CN 201810997759A CN 108895025 A CN108895025 A CN 108895025A
- Authority
- CN
- China
- Prior art keywords
- sealing
- impeller
- axial force
- comb teeth
- magnetic suspension
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 80
- 239000000725 suspension Substances 0.000 claims abstract description 33
- 244000126211 Hericium coralloides Species 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/051—Axial thrust balancing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides it is a kind of can balance portion axial force air blower sealing structure of shaft end, including impeller and magnetic suspension rotor；Impeller is connected with magnetic suspension rotor, and impeller wheel backside is equipped with the step of equidistant arrangement；Magnetic suspension rotor upper end is fixed with wheel disc sealing, and wheel disc sealing is equipped with staged sealing comb teeth and linear sealing comb teeth, and staged sealing comb teeth is located at the high-voltage end close to impeller wheel back, and linear sealing comb teeth is located at the low-pressure end far from impeller side；Staged seals comb teeth and step forms staged labyrinth seal, the cylindrical surface composition smooth type labyrinth seal of linear sealing comb teeth and magnetic suspension rotor.One kind of the present invention can balance portion axial force air blower sealing structure of shaft end, not only acted as good sealing effect, and reduce the axial force for being directed toward low-pressure end from high-voltage end, achieved the purpose that balance portion axial force.
Description
Technical field
The invention belongs to air blower field, more particularly, to it is a kind of can balance portion axial force air blower shaft end seal knot
Structure.
Background technique
Cfentrifugal blower shaft end seal is the important component of blower, one high speed rotation of rotor and stator of air blower and
One fixed, must have certain gap between two parts, therefore centainly has the leakage of gas, to reduce or prevent
The leakage of gas is needed using axle end sealing device, its effect is to reduce between blower magnetic suspension rotor and fixing element
Gap air leak, improve the efficiency of blower.Sealing structure of shaft end form employed in air blower is generally comb teeth-shaped sealer
Structure, comb-tooth-type sealing structure are divided into smooth type, dioptric type, step etc., and wherein smooth type processing and manufacturing is the simplest, but seals
Effect is poor, and general shaft end seal uses smooth type labyrinth seal form in air blower, in order to reach preferable sealing effect
Just need to increase the number of teeth and tooth pitch, in a limited space in be unable to reach sometimes, and the number of teeth is excessively multipair further decreases gas leakage
Amount effect is little.
In cfentrifugal blower, for half-opened impeller since the wheel disc end of impeller is high-voltage end, blade-side is low pressure
End, impeller blade side is different from gas load suffered by wheel disc side, after cancelling out each other, can also be left a part of responsive to axial force
In rotor, action direction is usually to be directed toward low-pressure end from high-voltage end, and the axial thrust of rotor is after balancing, remaining axial thrust
It is undertaken by thrust bearing, if thrust is excessive, will affect bearing life.
Summary of the invention
In view of this, the present invention is directed to propose it is a kind of can balance portion axial force air blower sealing structure of shaft end, cooperation
Using the composite construction of a kind of staged labyrinth seal and smooth type labyrinth seal, good sealing effect has been not only acted as, and
And the axial force that low-pressure end is directed toward from high-voltage end is reduced, achieve the purpose that balance portion axial force.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
It is a kind of can balance portion axial force air blower sealing structure of shaft end, including impeller and magnetic suspension rotor；Impeller with
Magnetic suspension rotor is connected, and impeller wheel backside is equipped with the step of equidistant arrangement；Magnetic suspension rotor upper end is fixed with wheel disc sealing, wheel
Disk sealing is equipped with staged sealing comb teeth and linear sealing comb teeth, and staged sealing comb teeth is located at the height close to impeller wheel back
Pressure side, linear sealing comb teeth are located at the low-pressure end far from impeller side；Staged seals comb teeth and step forms staged comb teeth
The cylindrical surface of sealing, linear sealing comb teeth and magnetic suspension rotor forms smooth type labyrinth seal.
Since staged comb tooth sealing structure is located at high-voltage end so that the forced area of high-voltage end reduces, therefore is sealing
It can reduce the axial force for being directed toward low-pressure end by high-voltage end that impeller is born while gas, reduce magnetic suspension rotor and born
Axial thrust, to reduce the load of magnetic suspension rotor thrust bearing.
Further, the cylindrical surface diameter of each step gradually becomes smaller along axial direction.
The area that the step makes impeller wheel carry on the back born high pressure reduces.
Further, connecting plate is equipped with above magnetic suspension rotor, connecting plate connects wheel disc sealing.
Further, adjustable radial clearance is equipped between wheel disc sealing and connection plate.
Radial clearance is convenient in assembling process, and adjustment wheel disc sealing can move freely when coaxial with magnetic suspension rotor.
Further, connecting plate is connected by screw to wheel disc sealing.
Further, impeller strains at bar and impeller locking nut by impeller lock and is connected with magnetic suspension rotor.
Compared with the existing technology, one kind of the present invention can balance portion axial force air blower sealing structure of shaft end tool
There is following advantage：
One kind of the present invention can balance portion axial force air blower sealing structure of shaft end, by impeller wheel back
The ladder of increased equidistant arrangement makes the gas pressure in wheel disc sealing be less than the pressure of original impeller wheel back, and reduces leaf
Taking turns high-pressure side is the area for taking turns back side, balances the axial thrust of part, reduces the load of rotor thrust bearing, and in rank
The staged comb tooth sealing structure used at ladder can play better seal effect in axial space.
One kind of the present invention can balance portion axial force air blower sealing structure of shaft end, use smooth type comb teeth
Sealing structure, gap is smaller between the comb teeth and rotor of the structure, easily can adjust wheel disc by way of circumference plug clearance gauge
Sealing is concentric with rotor assembly, and also has the function of sealing gas.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.
In the accompanying drawings：
Fig. 1 be the embodiment of the present invention described in one kind can balance portion axial force air blower sealing structure of shaft end illustrate
Figure.
Description of symbols：
1- impeller；11- step；2- magnetic suspension rotor；The cylindrical surface 21-；The sealing of 3- wheel disc；31- staged seals comb teeth；
The linear sealing comb teeth of 32-；4- screw；5- connecting plate；6- impeller lock strains at bar；7- impeller locking nut.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, it is a kind of can balance portion axial force air blower sealing structure of shaft end, including impeller 1 and magnetic suspension
Rotor 2；Impeller 1 is connected with magnetic suspension rotor 2, and impeller 1 takes turns the step 11 that backside is equipped with equidistant arrangement；On magnetic suspension rotor 2
End is fixed with wheel disc sealing 3, and wheel disc sealing 3 is equipped with staged sealing comb teeth 31 and linear sealing comb teeth 32, and staged is close
Envelope comb teeth 31 is located at the high-voltage end close to the wheel back of impeller 1, and linear sealing comb teeth 32 is located at the low-pressure end far from 1 side of impeller；Rank
Ladder type seals comb teeth 31 and step 11 forms staged labyrinth seal, the cylinder of linear sealing comb teeth 32 and magnetic suspension rotor 2
Face 21 forms smooth type labyrinth seal.
Since staged comb tooth sealing structure is located at high-voltage end so that the forced area of high-voltage end reduces, therefore is sealing
It can reduce the axial force for being directed toward low-pressure end by high-voltage end that impeller 1 is born while gas, reduce magnetic suspension rotor 2 and held
The axial thrust received, to reduce the load of 2 thrust bearing of magnetic suspension rotor.
As shown in Figure 1, the cylindrical surface diameter of each step 11 gradually becomes smaller along axial direction.
The area that the step 11 makes the wheel of impeller 1 carry on the back born high pressure reduces.
As shown in Figure 1, being equipped with connecting plate 5 above magnetic suspension rotor 2, connecting plate 5 connects wheel disc sealing 3.
As shown in Figure 1, being equipped with adjustable radial clearance between wheel disc sealing 3 and connecting plate 5.
Radial clearance is convenient in assembling process, and adjustment wheel disc sealing 3 can be moved freely when coaxial with magnetic suspension rotor 2
It is dynamic.
As shown in Figure 1, connecting plate 5 is connect with wheel disc sealing 3 by screw 4.
It is connected as shown in Figure 1, impeller 1 strains at bar 6 and impeller locking nut 7 by impeller lock with magnetic suspension rotor 2.
One kind of the present invention can balance portion axial force air blower sealing structure of shaft end in practical applications, first
Magnetic suspension rotor 2 is adjusted to suspended state, magnetic suspension rotor 2 is inserted in wheel disc sealing 3, is affixed on 5 positioning surface of connecting plate, even
Wheel disc sealing 3 is gently pressed on connecting plate 5 by connecting bolt 4, and wheel disc seals 3 hand push and moves at this time, can be detected with clearance gauge linear
The gap width between comb teeth 32 and cylindrical surface 21 is sealed, when circumference radial clearance value is uniform, wheel disc sealing 3 and magnetic suspension rotor
2 with one heart, screw 4 is tightened, the position of fixed wheel disc sealing 3；Then, impeller 1 is strained at into bar 6 by impeller lock and impeller is locked
Nut 7 links together, at this point, the step 11 of impeller wheel back and the staged sealing one-to-one correspondence of comb teeth 31 form staged comb teeth
Sealing.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. one kind can balance portion axial force air blower sealing structure of shaft end, it is characterised in that：Including impeller (1) and magnetic suspension
Rotor (2)；The impeller (1) is connected with the magnetic suspension rotor (2), and impeller (1) the wheel backside is equipped with equidistant arrangement
Step (11)；Magnetic suspension rotor (2) upper end is fixed with wheel disc sealing (3), and it is close that the wheel disc sealing (3) is equipped with staged
Comb teeth (31) and linear sealing comb teeth (32) are sealed, staged sealing comb teeth (31) is located at close to the impeller (1) wheel back
High-voltage end, linear sealing comb teeth (32) is located at the low-pressure end far from the impeller (1) side；The staged sealing comb
Tooth (31) and the step (11) form staged labyrinth seal, the linear sealing comb teeth (32) and the magnetic suspension rotor
(2) cylindrical surface (21) forms smooth type labyrinth seal.
2. one kind according to claim 1 can balance portion axial force air blower sealing structure of shaft end, it is characterised in that：
The cylindrical surface diameter of each step (11) gradually becomes smaller along axial direction.
3. one kind according to claim 1 can balance portion axial force air blower sealing structure of shaft end, it is characterised in that：
Connecting plate (5) are equipped with above the magnetic suspension rotor (2), the connecting plate (5) connects the wheel disc sealing (3).
4. one kind according to claim 3 can balance portion axial force air blower sealing structure of shaft end, it is characterised in that：
Adjustable radial clearance is equipped between the wheel disc sealing (3) and the connecting plate (5).
5. one kind according to claim 4 can balance portion axial force air blower sealing structure of shaft end, it is characterised in that：
The connecting plate (5) is connect with wheel disc sealing (3) by screw (4).
6. one kind according to claim 1 can balance portion axial force air blower sealing structure of shaft end, it is characterised in that：
The impeller (1) strains at bar (6) and impeller locking nut (7) by impeller lock and is connected with the magnetic suspension rotor (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810997759.XA CN108895025B (en) | 2018-08-29 | 2018-08-29 | Blower shaft end sealing structure capable of balancing partial axial force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810997759.XA CN108895025B (en) | 2018-08-29 | 2018-08-29 | Blower shaft end sealing structure capable of balancing partial axial force |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108895025A true CN108895025A (en) | 2018-11-27 |
| CN108895025B CN108895025B (en) | 2024-03-22 |
Family
ID=64358593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810997759.XA Active CN108895025B (en) | 2018-08-29 | 2018-08-29 | Blower shaft end sealing structure capable of balancing partial axial force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108895025B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483636A (en) * | 2020-11-13 | 2022-05-13 | Lg电子株式会社 | Compressor and cooler comprising same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202811498U (en) * | 2012-08-13 | 2013-03-20 | 湖南航翔燃气轮机有限公司 | Stepped labyrinth seal structure |
| CN103470774A (en) * | 2013-08-30 | 2013-12-25 | 西安交通大学苏州研究院 | Stepped comb tooth seal |
| CN104153824A (en) * | 2014-07-25 | 2014-11-19 | 江苏金通灵流体机械科技股份有限公司 | Multistage air seal structure of turbine |
| CN206530534U (en) * | 2017-02-24 | 2017-09-29 | 上海优耐特斯压缩机有限公司 | Receded disk impeller wheel carries on the back comb tooth sealing structure |
| CN107939699A (en) * | 2017-12-04 | 2018-04-20 | 南京磁谷科技有限公司 | A kind of magnetic suspension compressor structure |
| CN208686643U (en) * | 2018-08-29 | 2019-04-02 | 亿昇(天津)科技有限公司 | It is a kind of can balance portion axial force air blower sealing structure of shaft end |
-
2018
- 2018-08-29 CN CN201810997759.XA patent/CN108895025B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202811498U (en) * | 2012-08-13 | 2013-03-20 | 湖南航翔燃气轮机有限公司 | Stepped labyrinth seal structure |
| CN103470774A (en) * | 2013-08-30 | 2013-12-25 | 西安交通大学苏州研究院 | Stepped comb tooth seal |
| CN104153824A (en) * | 2014-07-25 | 2014-11-19 | 江苏金通灵流体机械科技股份有限公司 | Multistage air seal structure of turbine |
| CN206530534U (en) * | 2017-02-24 | 2017-09-29 | 上海优耐特斯压缩机有限公司 | Receded disk impeller wheel carries on the back comb tooth sealing structure |
| CN107939699A (en) * | 2017-12-04 | 2018-04-20 | 南京磁谷科技有限公司 | A kind of magnetic suspension compressor structure |
| CN208686643U (en) * | 2018-08-29 | 2019-04-02 | 亿昇(天津)科技有限公司 | It is a kind of can balance portion axial force air blower sealing structure of shaft end |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114483636A (en) * | 2020-11-13 | 2022-05-13 | Lg电子株式会社 | Compressor and cooler comprising same |
| CN114483636B (en) * | 2020-11-13 | 2023-12-12 | Lg电子株式会社 | Compressor and cooler comprising same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108895025B (en) | 2024-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107387261B (en) | Combined mechanical sealing device | |
| CN101113741B (en) | Automatic balance device for shielding force at direction of pump spindle | |
| CN208686643U (en) | It is a kind of can balance portion axial force air blower sealing structure of shaft end | |
| CN106402036B (en) | A kind of horizontal bivalve radial direction subdivision is arranged symmetrically cartridge type centrifugal multistage pump multiple centrifugal pump | |
| CN108895025A (en) | It is a kind of can balance portion axial force air blower sealing structure of shaft end | |
| CN107355415B (en) | Nuclear power condensate pump mechanical seal device | |
| US2816702A (en) | Pump | |
| CN103591246B (en) | A kind of two-chamber load limiting type of constant filling fluid coupling | |
| CN109723825A (en) | A kind of dry gas sealing device of combining form | |
| CN202417617U (en) | Radial labyrinth gland of turbine | |
| CN213598241U (en) | Composite sealing structure of high-speed motor direct-drive centrifugal blower | |
| CN201705715U (en) | Shaft sealing cover of centrifugal pump with flow guide vane | |
| CN205559355U (en) | Built -in axial force balancing unit's centrifugal pump of horizontal axis | |
| CN214118952U (en) | Dry sealing device | |
| CN209444654U (en) | A kind of Hydraulic Elements | |
| CN105889125B (en) | A kind of compressor rotor | |
| CN209777740U (en) | miniature rotary feeding valve | |
| CN209305244U (en) | A kind of semi-floating drive axle hub end component | |
| CN206268132U (en) | A kind of horizontal bivalve radial direction subdivision is arranged symmetrically cartridge type centrifugal multistage pump multiple centrifugal pump | |
| CN205047844U (en) | Mechanical seal | |
| CN205745828U (en) | Pipeline whirl compensator | |
| CN204921064U (en) | Turbo charger with disconnect -type angular contact ball bearing | |
| CN205445687U (en) | Turbine structure of turbine disc rigidity self enhancement | |
| CN218771547U (en) | Bearing structure of high-speed motor and high-speed centrifugal fan | |
| CN215860809U (en) | Labyrinth balance type magnetic pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |