CN115898553B - Easy dismounting's magnetic suspension turbine structure - Google Patents
Easy dismounting's magnetic suspension turbine structure Download PDFInfo
- Publication number
- CN115898553B CN115898553B CN202211410016.0A CN202211410016A CN115898553B CN 115898553 B CN115898553 B CN 115898553B CN 202211410016 A CN202211410016 A CN 202211410016A CN 115898553 B CN115898553 B CN 115898553B
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- rotor
- turbine
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- thrust disc
- bearing
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- 239000000725 suspension Substances 0.000 title claims abstract description 34
- 230000008878 coupling Effects 0.000 claims abstract description 26
- 238000010168 coupling process Methods 0.000 claims abstract description 26
- 238000005859 coupling reaction Methods 0.000 claims abstract description 26
- 238000003475 lamination Methods 0.000 claims abstract description 16
- 238000005339 levitation Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 description 7
- 230000001681 protective effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
Classifications
-
- 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
- Y02E10/20—Hydro energy
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- Magnetic Bearings And Hydrostatic Bearings (AREA)
Abstract
The invention belongs to the technical field of magnetic suspension turbines, and particularly relates to a magnetic suspension turbine structure convenient to assemble and disassemble. The technical proposal is as follows: the utility model provides a easy dismounting's magnetic suspension turbine structure, includes turbine rotor and thrust disk through terminal surface tooth complex, is provided with axial rotor lamination on the thrust disk in, and one side of thrust disk is provided with first magnetic suspension thrust bearing stator, and the opposite side of thrust disk is provided with second magnetic suspension thrust bearing stator, and one side that the turbine rotor was kept away from to the thrust disk is connected with half shaft coupling, and the generator is connected to half shaft coupling's the other end. The invention provides a magnetic suspension turbine structure convenient to assemble and disassemble.
Description
Technical Field
The invention belongs to the technical field of magnetic suspension turbines, and particularly relates to a magnetic suspension turbine structure convenient to assemble and disassemble.
Background
In the field of magnetic suspension turbines, a turbine rotor is supported by a radial magnetic suspension bearing, and rotor thrust is borne by a magnetic suspension thrust bearing. The magnetic suspension thrust bearing stator is of a whole-circle structure limited by the technical development level of the existing magnetic suspension bearing, and a sleeved structure is generally designed between a thrust disc of the thrust bearing and a turbine rotor for the convenience of installation. Meanwhile, the magnetic suspension turbine often works at a relatively high rotating speed, in order to prevent the thrust disc from loosening, the thrust disc and the shaft are in interference fit, and a thermal sleeve or hydraulic assembly method is adopted in the installation process. The assembling process is relatively complex when registering the axial clearance of the thrust bearing or overhauling, special tools are needed, the time is long, and the matching surface can be damaged after the thrust bearing is disassembled and assembled for a plurality of times.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a magnetic suspension turbine structure convenient to assemble and disassemble.
The technical scheme adopted by the invention is as follows:
the utility model provides a easy dismounting's magnetic suspension turbine structure, includes turbine rotor and thrust disk through terminal surface tooth complex, is provided with axial rotor lamination on the thrust disk in, and one side of thrust disk is provided with first magnetic suspension thrust bearing stator, and the opposite side of thrust disk is provided with second magnetic suspension thrust bearing stator, and one side that the turbine rotor was kept away from to the thrust disk is connected with half shaft coupling, and the generator is connected to half shaft coupling's the other end.
According to the invention, the turbine rotor transmits torque to the thrust disc through the end face teeth, and the turbine rotor outputs mechanical work of the turbine to the generator through the thrust disc and the half coupling to generate electricity so as to realize thermoelectric conversion of the turbine unit. The end face of the assembled thrust disk can be ensured by utilizing the function of automatic centering of the end face teeth, and the radial runout requirement is met. The thrust disk is matched with the turbine rotor through end face teeth, so that the turbine rotor is convenient to disassemble and assemble, large in transmission torque and suitable for high-rotation-speed operation.
As the preferable scheme of the invention, the turbine rotor is in threaded connection with a central pull rod, the other end of the central pull rod is in threaded connection with a first lock nut, and the first lock nut is pressed on one side of the thrust disc far away from the turbine rotor. The thrust disc is fastened with the turbine rotor by adopting a central pull rod, the axial thrust borne by the thrust disc is borne by the central pull rod, the thrust disc can be ensured not to be loosened due to centrifugal force and axial force when running at high speed, and the defect that the conventional magnetic suspension turbine rotor cannot bear larger thrust by adopting a sleeved structure can be overcome.
As a preferable scheme of the invention, a boss is arranged on the central pull rod and is positioned between the turbine rotor and the thrust disc. The boss on the center pull rod is positioned between the turbine rotor and the thrust disc and is used for axial positioning during installation.
As a preferable mode of the invention, a stop washer is arranged between the first lock nut and the thrust disc. The stop washer prevents the first lock nut from loosening.
As a preferable scheme of the invention, the turbine rotor is connected with radial magnetic bearing rotor lamination sheets, and radial magnetic bearing stators are sleeved outside the radial magnetic bearing rotor lamination sheets. The force generated between the radial magnetic bearing stator and the radial magnetic bearing rotor lamination supports the turbine rotor.
As the preferable scheme of the invention, the turbine rotor is also connected with a sensor rotor part, and the sensor arranged on the turbine stator is matched with the sensor rotor part, so that the position of the rotor can be accurately identified, and the position information of the turbine rotor in the installation and operation processes can be mastered.
As a preferred embodiment of the present invention, the coupling half is connected to the thrust plate by a screw.
As a preferred embodiment of the invention, the coupling halves are engaged with the thrust disk by means of end teeth. The coupling part is matched with the thrust disc through the end face teeth, so that the coupling part and the thrust disc can be conveniently disassembled and assembled.
As the preferable scheme of the invention, the thrust disc is connected with a protective bearing rotor shaft sleeve, the protective bearing rotor shaft sleeve is sleeved with a protective bearing, and the thrust disc is connected with a second locking nut for axially positioning the protective bearing in a threaded manner.
As a preferable scheme of the invention, when the turbine rotor normally operates, a gap is arranged between the protective bearing rotor shaft sleeve and the protective bearing. The set radial clearance is reached between the inner ring of the protection bearing and the outer ring of the shaft sleeve of the rotor of the protection bearing, so that the protection bearing is prevented from running during normal operation, and when the turbine rotor falls down due to certain specific faults of the unit, the turbine rotor is supported on the protection bearing to rotate, so that the safety of the unit is ensured.
The beneficial effects of the invention are as follows:
1. According to the invention, the turbine rotor transmits torque to the thrust disc through the end face teeth, and the turbine rotor outputs mechanical work of the turbine to the generator through the thrust disc and the half coupling to generate electricity so as to realize thermoelectric conversion of the turbine unit. The end face of the assembled thrust disk can be ensured by utilizing the function of automatic centering of the end face teeth, and the radial runout requirement is met. The thrust disk is matched with the turbine rotor through end face teeth, so that the turbine rotor is convenient to disassemble and assemble, large in transmission torque and suitable for high-rotation-speed operation.
2. The thrust disc is fastened with the turbine rotor by adopting a central pull rod, the axial thrust borne by the thrust disc is borne by the central pull rod, the thrust disc can be ensured not to be loosened due to centrifugal force and axial force when running at high speed, and the defect that the conventional magnetic suspension turbine rotor cannot bear larger thrust by adopting a sleeved structure can be overcome.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of the thrust disc.
In the figure: 1-a turbine rotor; 2-radial magnetic bearing rotor laminations; 3-sensor rotor components; 4-a thrust disc; 5-protecting the bearing; 6-a screw; 7-half coupling; 8-a stop washer; 9-a first lock nut; 10-a second lock nut; 11-protecting a bearing rotor sleeve; 12-a first magnetic suspension thrust bearing stator; 13-a second magnetic levitation thrust bearing stator; 14-a central pull rod; 15-radial magnetic bearing stator.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
As shown in fig. 1 and 2, the magnetic suspension turbine structure with convenient disassembly and assembly in this embodiment includes a turbine rotor 1 and a thrust disc 4 which are matched by end face teeth, an axial rotor lamination is arranged in the thrust disc 4, a first magnetic suspension thrust bearing stator 12 is arranged on one side of the thrust disc 4, a second magnetic suspension thrust bearing stator 13 is arranged on the other side of the thrust disc 4, a half coupling 7 is connected to one side of the thrust disc 4 far away from the turbine rotor 1, and a generator is connected to the other end of the half coupling 7. The end face of the turbine rotor 1 is provided with end face teeth, both sides of the thrust disc 4 are provided with end face teeth, the end face of the half coupling 7 is provided with end face teeth, and the thrust disc 4 is connected with the turbine rotor 1 and the half coupling 7 through the end face teeth respectively.
The half coupling 7 is also connected with the thrust disc 4 through a screw 6. The screw 6 connecting the coupling half 7 and the thrust disc 4 is subjected to only small axial forces and is not subjected to shear forces when transmitting torque.
The thrust disc 4 is connected with the turbine rotor 1 and the half coupler 7 by adopting end face teeth, the end face and radial runout requirements of the assembled thrust disc 4 can be ensured by utilizing the automatic centering function of the end face teeth, and the axial runout device has the advantages of good rigidity, convenience in assembly and disassembly, large transmission torque and suitability for high-rotation-speed operation.
The thrust disc 4 is arranged near the sensor rotor part 3 and the half coupling 7, so that on one hand, the position of the turbine rotor 1 can be accurately positioned, and on the other hand, the expansion difference of the turbine rotor 1 and a stator at the end face of the half coupling 7 can be reduced as much as possible, and the displacement influence between the turbine rotor 1 and the generator rotor is weakened.
The turbine rotor 1 is connected with a radial magnetic bearing rotor lamination 2 and a sensor rotor component 3, and a radial magnetic bearing stator 15 is sleeved outside the radial magnetic bearing rotor lamination 2. The turbine rotor 1 is supported by the electromagnetic forces generated by the two radial magnetic bearing stators 15 and the radial magnetic bearing rotor lamination stack 2. In order to ensure that the radial magnetic bearing rotor lamination 2 and the sensor rotor part 3 do not loosen when the magnetic suspension turbine rotor 1 runs at a high speed, the radial magnetic bearing rotor lamination 2 and the sensor rotor part 3 are in interference fit with the turbine rotor 1, and are installed by adopting a hot jacket process. Electromagnetic forces are formed between the radial magnetic bearing rotor laminations 2 and the radial magnetic bearing stator 15 for supporting the turbine rotor 1.
The sensor arranged on the turbine stator is matched with the sensor rotor part 3, so that the rotor position can be accurately identified, and the position information of the turbine rotor in the installation and operation processes can be mastered.
The turbine rotor 1 is provided with a central threaded hole, the thrust disc 4 is provided with a central hole, the central threaded hole of the turbine rotor 1 is in threaded connection with a central pull rod 14, the central pull rod 14 penetrates through the central hole of the thrust disc 4, the other end of the central pull rod 14 is in threaded connection with a first locking nut 9, and the first locking nut 9 is tightly pressed on one side, far away from the turbine rotor 1, of the thrust disc 4. The thrust disc 4 is fastened with the turbine rotor 1 by adopting the central pull rod 14, the axial thrust borne by the thrust disc 4 is borne by the central pull rod 14, the thrust disc 4 can be ensured not to loosen due to centrifugal force and axial force when running at high speed, and the defect that the conventional magnetic suspension turbine rotor 1 cannot bear larger thrust by adopting a sleeved structure can be overcome. The center pull rod 14 is provided with a boss, and the boss is positioned between the turbine rotor 1 and the thrust disc 4. The boss on the central tie rod 14 is located between the turbine rotor 1 and the thrust disk 4 for axial positioning during installation. A stop washer 8 is arranged between the first lock nut 9 and the thrust disc 4. The stop washer 8 prevents the first lock nut 9 from loosening.
Further, a rotor shaft sleeve of the protection bearing 5 is connected to the thrust disc 4, the protection bearing 5 is sleeved outside the rotor shaft sleeve of the protection bearing 5, and a second locking nut 10 for axially positioning the protection bearing 5 is connected to the thrust disc 4 in a threaded manner. When the turbine rotor 1 operates normally, a gap is reserved between the rotor shaft sleeve of the protection bearing 5 and the protection bearing 5. The rotor shaft sleeve of the protection bearing 5 is assembled on the thrust disc 4 in an interference manner, after the protection bearing 5 is axially installed, the second lock nut 10 is screwed down to axially position the protection bearing 5, and set axial gaps are ensured between the protection bearing 5 and the rotor shaft sleeve of the second lock nut 10 and between the protection bearing 5 and the rotor shaft sleeve of the protection bearing 5. The set radial clearance is reached between the inner ring of the protection bearing 5 and the outer ring of the rotor shaft sleeve of the protection bearing 5, so that the protection bearing 5 is prevented from running during normal operation, and when the turbine rotor 1 falls down due to certain specific faults of the unit, the turbine rotor 1 is supported on the protection bearing 5 to rotate, so that the safety of the unit is ensured.
When the rotor is assembled, the center pull rod 14 is connected with the turbine rotor 1, threads are arranged at two ends of the center pull rod 14, and a boss is designed for axial positioning during installation. After the central pull rod 14 is installed in place through threaded connection, the second magnetic suspension thrust bearing stator 13 is installed from the axial direction, the central hole of the thrust disc 4 penetrates through the central pull rod 14, and the first locking nut 9 is used for fastening the thrust disc 4 according to a set tightening torque. The end face and radial runout requirements of the assembled thrust disc 4 can be guaranteed by utilizing the function of automatic centering of the end face teeth, and then the first locking nut 9 is prevented from loosening by stopping with the stopping gasket 8. After the end face tooth type thrust disc 4 and the turbine rotor 1 are installed, a first magnetic suspension thrust bearing stator 12 is axially installed. Finally, the coupling half 7 is connected with the thrust disc 4 through a plurality of screws 6, and the installation of the magnetic suspension turbine rotor 1 is completed.
In operation, the turbine rotor 1 transmits torque to the thrust disc 4 through the end face teeth, meanwhile, the axial thrust on the turbine rotor 1 is born by the thrust disc 4, the end face teeth type thrust disc 4 is axially fixed by the central pull rod 14, and the received axial thrust is born by the central pull rod 14. The center pull rod 14 is made of high-strength alloy steel forgings, can bear larger axial force, is far larger than the axial force bearing capacity of the thrust disc 4 adopting a sleeved structure, and cannot loosen. The turbine rotor 1 outputs mechanical work of a turbine to a generator through a coupling structure of two end face teeth from the half coupling 7 to generate electricity so as to realize thermoelectric conversion of the turbine set.
The invention is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present invention, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present invention, fall within the scope of protection of the present invention.
Claims (8)
1. A easy dismounting's magnetic suspension turbine structure, its characterized in that: the turbine rotor comprises a turbine rotor (1) and a thrust disc (4) which are matched through end face teeth, wherein axial rotor laminations are arranged in the thrust disc (4), a first magnetic suspension thrust bearing stator (12) is arranged on one side of the thrust disc (4), a second magnetic suspension thrust bearing stator (13) is arranged on the other side of the thrust disc (4), one side, far away from the turbine rotor (1), of the thrust disc (4) is connected with a half coupling (7), and the other end of the half coupling (7) is connected with a generator; the turbine rotor (1) is in threaded connection with a central pull rod (14), the other end of the central pull rod (14) is in threaded connection with a first lock nut (9), and the first lock nut (9) is tightly pressed on one side, far away from the turbine rotor (1), of the thrust disc (4); a boss is arranged on the central pull rod (14) and is positioned between the turbine rotor (1) and the thrust disc (4).
2. The easy-to-assemble magnetic levitation turbine structure of claim 1, wherein: a stop gasket (8) is arranged between the first lock nut (9) and the thrust disc (4).
3. The easy-to-assemble magnetic levitation turbine structure of claim 1, wherein: the turbine rotor (1) is connected with radial magnetic bearing rotor lamination (2), and a radial magnetic bearing stator (15) is sleeved outside the radial magnetic bearing rotor lamination (2).
4. A magnetically levitated turbine structure convenient to disassemble and assemble as claimed in claim 3, wherein: the turbine rotor (1) is also connected with a sensor rotor part (3), and a sensor arranged on the turbine stator is matched with the sensor rotor part (3).
5. The easy-to-assemble magnetic levitation turbine structure of claim 1, wherein: the half coupling (7) is connected with the thrust disc (4) through a screw (6).
6. The easy-to-assemble magnetic levitation turbine structure of claim 5, wherein: the half coupling (7) is matched with the thrust disc (4) through end face teeth.
7. The easy-to-assemble magnetic levitation turbine structure of claim 1, wherein: the thrust disk (4) is connected with a protection bearing (5) rotor shaft sleeve, the protection bearing (5) rotor shaft sleeve is sleeved with the protection bearing (5), and the thrust disk (4) is connected with a second lock nut (10) for axially positioning the protection bearing (5) in a threaded manner.
8. The easy-to-assemble magnetic levitation turbine structure of claim 7, wherein: when the turbine rotor (1) operates normally, a gap is reserved between the rotor shaft sleeve of the protection bearing (5) and the protection bearing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211410016.0A CN115898553B (en) | 2022-11-11 | 2022-11-11 | Easy dismounting's magnetic suspension turbine structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211410016.0A CN115898553B (en) | 2022-11-11 | 2022-11-11 | Easy dismounting's magnetic suspension turbine structure |
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| CN115898553A CN115898553A (en) | 2023-04-04 |
| CN115898553B true CN115898553B (en) | 2024-06-04 |
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| CN202211410016.0A Active CN115898553B (en) | 2022-11-11 | 2022-11-11 | Easy dismounting's magnetic suspension turbine structure |
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| CN115898553A (en) | 2023-04-04 |
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