CN115898553A - Magnetic suspension turbine structure convenient to disassemble and assemble - Google Patents
Magnetic suspension turbine structure convenient to disassemble and assemble Download PDFInfo
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- CN115898553A CN115898553A CN202211410016.0A CN202211410016A CN115898553A CN 115898553 A CN115898553 A CN 115898553A CN 202211410016 A CN202211410016 A CN 202211410016A CN 115898553 A CN115898553 A CN 115898553A
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- turbine
- bearing
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- 239000000725 suspension Substances 0.000 title claims abstract description 36
- 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
- 230000008878 coupling Effects 0.000 claims description 16
- 230000001681 protective effect Effects 0.000 claims description 14
- 238000005339 levitation Methods 0.000 claims 9
- 238000009434 installation Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 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
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
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- 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 scheme is as follows: the utility model provides a simple to assemble and disassemble's magnetic suspension turbine structure, includes through terminal surface tooth complex turbine rotor and thrust disc, is provided with the axial rotor lamination in the thrust disc, and one side of thrust disc is provided with first magnetic suspension thrust bearing stator, and the opposite side of thrust disc is provided with second magnetic suspension thrust bearing stator, and one side that turbine rotor was kept away from to the thrust disc is connected with the half-coupling, and the generator is connected to the other end of half-coupling. 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 the thrust of the rotor is borne by a magnetic suspension thrust bearing. The magnetic suspension thrust bearing is limited by the technical development level of the existing magnetic suspension bearing, the stator of the magnetic suspension thrust bearing is of a full-circle structure, and a sleeved structure is generally designed between a thrust disc of the thrust bearing and a turbine rotor in order to facilitate the installation of the magnetic suspension thrust bearing. Meanwhile, the magnetic suspension turbine usually 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 the mounting process adopts a hot sleeve or hydraulic assembly method. The assembly process is relatively complex when registering the axial clearance of the thrust bearing or overhauling, special tooling is needed, the consumed time is long, and the matching surface can be damaged after the thrust bearing is disassembled and assembled for many times.
Disclosure of Invention
In order to solve the above problems in the prior art, the present invention provides a magnetic suspension turbine structure which is easy to assemble and disassemble.
The technical scheme adopted by the invention is as follows:
the magnetic suspension turbine structure convenient to assemble and disassemble comprises a turbine rotor and a thrust disc which are matched through end face teeth, axial rotor laminations are arranged on the thrust disc, a first magnetic suspension thrust bearing stator is arranged on one side of the thrust disc, a second magnetic suspension thrust bearing stator is arranged on the other side of the thrust disc, one side, away from the turbine rotor, of the thrust disc is connected with a half-coupling, and the other end of the half-coupling is connected with a generator.
The turbine rotor transmits torque to the thrust disc through the end face teeth, and outputs mechanical work of a 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 and radial run-out requirements of the assembled thrust disc can be met by utilizing the automatic centering function of the end face teeth. The thrust disc and the turbine rotor are matched through end face teeth, so that the turbine rotor is convenient to disassemble and assemble, large in transmission torque and suitable for high-rotating-speed operation.
As a preferred 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 locking nut, and the first locking nut is tightly pressed on one side, away from the turbine rotor, of the thrust disc. The thrust disc and the turbine rotor are fastened by the central pull rod, and the axial thrust borne by the thrust disc is borne by the central pull rod, so that the thrust disc can be prevented from loosening due to centrifugal force and axial force during high-speed operation, and the defect that the conventional magnetic suspension turbine rotor cannot bear larger thrust due to the sleeved structure can be overcome.
As a preferred embodiment of the present invention, the central pull rod is provided with a boss, and the boss is located between the turbine rotor and the thrust disk. The boss on the central pull rod is positioned between the turbine rotor and the thrust disc and used for axial positioning during installation.
In a preferred embodiment of the present invention, a stop washer is disposed between the first lock nut and the thrust disc. The stop washer prevents the first lock nut from loosening.
As a preferred scheme of the invention, the turbine rotor is connected with a radial magnetic bearing rotor lamination, and a radial magnetic bearing stator is sleeved outside the radial magnetic bearing rotor lamination. The force generated between the radial magnetic bearing stator and the radial magnetic bearing rotor laminations supports the turbine rotor.
As a preferred scheme of the invention, the turbine rotor is further connected with a sensor rotor part, and a 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.
In a preferred embodiment of the present invention, the coupling halves and the thrust plate are connected by screws.
In a preferred embodiment of the present invention, the half coupling and the thrust disc are engaged with each other by face teeth. Through the cooperation of end face teeth between half-coupling and the thrust dish, make things convenient for the dismouting between half-coupling and the thrust dish.
As a preferable scheme of the invention, the thrust disc is connected with a protective bearing rotor shaft sleeve, a protective bearing is sleeved outside the protective bearing rotor shaft sleeve, and the thrust disc is in threaded connection with a second locking nut for axially positioning the protective bearing.
In a preferred embodiment of the present invention, when the turbine rotor operates normally, a gap is formed between the protective bearing rotor shaft sleeve and the protective bearing. The protection bearing inner ring and the protection bearing rotor shaft sleeve outer ring reach a set radial gap to ensure that the protection bearing does not operate in normal operation, and when the turbine rotor falls 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 invention has the beneficial effects that:
1. the turbine rotor transmits torque to the thrust disc through the end face teeth, and outputs mechanical work of a 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 and radial run-out requirements of the assembled thrust disc can be met by utilizing the automatic centering function of the end face teeth. The thrust disc and the turbine rotor are matched through end face teeth, so that the turbine is convenient to assemble and disassemble, large in transmission torque and suitable for high-rotating-speed operation.
2. The thrust disc and the turbine rotor are fastened by the central pull rod, and the axial thrust borne by the thrust disc is borne by the central pull rod, so that the thrust disc can be prevented from loosening due to centrifugal force and axial force during high-speed operation, and the defect that the conventional magnetic suspension turbine rotor can not bear larger thrust due to a sleeved structure can be overcome.
Drawings
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the thrust disk.
In the figure: 1-a turbine rotor; 2-radial magnetic bearing rotor laminations; 3-a sensor rotor component; 4-a thrust disc; 5-protecting the bearing; 6-screw; 7-half coupling; 8-a stop washer; 9-a first locking nut; 10-a second lock nut; 11-protecting the bearing rotor shaft sleeve; 12-a first magnetically levitated thrust bearing stator; 13-a second magnetic suspension thrust bearing stator; 14-a central tie rod; 15-radial magnetic bearing stator.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of 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 present invention, 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1 and fig. 2, the magnetic suspension turbine structure convenient to assemble and disassemble according to the embodiment includes a turbine rotor 1 and a thrust disc 4 which are matched through 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, which is far away from the turbine rotor 1, and the other end of the half coupling 7 is connected to a generator. Wherein, 1 terminal surface processing of turbine rotor has the terminal surface tooth, and 4 both sides of thrust dish have all processed the terminal surface tooth, and 7 terminal surface processing terminal surface teeth of half-coupling, thrust dish 4 are connected with turbine rotor 1 and half-coupling 7 through the terminal surface tooth respectively.
The half coupling 7 is connected with the thrust disc 4 through a screw 6. The screws 6 connecting the coupling halves 7 and the thrust disk 4 are subjected to only small axial forces and are not subjected to shear forces when transmitting torque.
The thrust disc 4 is connected with the turbine rotor 1 and the half coupling 7 through end face teeth, the end face and radial runout requirements of the assembled thrust disc 4 can be met under the automatic centering action of the end face teeth, and the radial runout thrust disc has the advantages of being good in rigidity, convenient to assemble and disassemble, large in transmission torque and adaptive to high-rotating-speed operation.
The turbine rotor 1 is connected with a radial magnetic bearing rotor lamination 2 and a sensor rotor part 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 force generated by the two radial magnetic bearing stators 15 and the radial magnetic bearing rotor lamination 2. In order to ensure that the radial magnetic bearing rotor lamination 2 and the sensor rotor part 3 are not loosened 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 shrink fit process. An electromagnetic force is formed between the radial magnetic bearing rotor lamination 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 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.
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 and the turbine rotor 1 are fastened by the central pull rod 14, and the axial thrust borne by the thrust disc 4 is borne by the central pull rod 14, so that the thrust disc 4 can be prevented from loosening due to centrifugal force and axial force during high-speed operation, and the defect that the conventional magnetic suspension turbine rotor 1 cannot bear larger thrust due to a sleeved structure can be overcome. The central pull rod 14 is provided with a boss which 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 location 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.
Furthermore, a rotor shaft sleeve of the protective bearing 5 is connected to the thrust disc 4, the protective bearing 5 is sleeved outside the rotor shaft sleeve of the protective bearing 5, and a second locking nut 10 for axially positioning the protective bearing 5 is connected to the thrust disc 4 in a threaded manner. When the turbine rotor 1 operates normally, a gap is formed between the rotor shaft sleeve of the protective bearing 5 and the protective bearing 5. The thrust disc 4 is provided with the rotor shaft sleeve of the protection bearing 5 in an interference fit mode, after the protection bearing 5 is axially installed, the second locking nut 10 is screwed down to axially position the protection bearing 5, and the protection bearing 5, the second locking nut 10 and the rotor shaft sleeve of the protection bearing 5 are guaranteed to be in a set axial gap. The set radial clearance is achieved 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 does not operate in normal operation, and when the turbine rotor 1 falls due to certain specific faults of a unit, the turbine rotor 1 is supported on the protection bearing 5 to rotate, and the safety of the unit is guaranteed.
When the rotor is assembled, the central pull rod 14 is connected with the turbine rotor 1, threads are arranged at two ends of the central pull rod 14, and bosses are 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 axially installed, penetrates through the central pull rod 14 through the central hole of the thrust disc 4, and then the thrust disc 4 is fastened through the first locking nut 9 according to the set tightening torque. The end face of the assembled thrust disc 4 and the radial runout requirement can be guaranteed by the aid of the automatic centering effect of the end face teeth, and then the first locking nut 9 is prevented from loosening due to locking of the locking washer 8. And 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. And finally, connecting the half coupling 7 with the thrust disc 4 through a plurality of screws 6 to complete the installation of the magnetic suspension turbine rotor 1.
During operation, the turbine rotor 1 transmits torque to the thrust disc 4 through the end face teeth, meanwhile, axial thrust on the turbine rotor 1 needs to be borne by the thrust disc 4, the end face teeth type thrust disc 4 is axially fixed through the central pull rod 14, and the axial thrust borne by the end face teeth type thrust disc is borne by the central pull rod 14. The central pull rod 14 is made of a high-strength alloy steel forging, can bear large axial force, is far larger than the axial force bearing capacity of the thrust disc 4 with the sleeving structure, and cannot be loosened. The turbine rotor 1 outputs mechanical work of a turbine from the half coupling 7 to a generator through two end face tooth connecting structures to generate electricity so as to realize thermoelectric conversion of the turbine unit.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (10)
1. The utility model provides a magnetic suspension turbine structure of easy dismounting which characterized in that: the novel thrust disc type generator comprises a turbine rotor (1) and a thrust disc (4) which are matched through end face teeth, 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.
2. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 1, wherein: 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 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).
3. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 2, wherein: and a boss is arranged on the central pull rod (14) and positioned between the turbine rotor (1) and the thrust disc (4).
4. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 2, wherein: and a stop gasket (8) is arranged between the first locking nut (9) and the thrust disc (4).
5. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 1, wherein: the turbine rotor (1) is connected with a radial magnetic bearing rotor lamination (2), and a radial magnetic bearing stator (15) is sleeved outside the radial magnetic bearing rotor lamination (2).
6. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 5, wherein: the turbine rotor (1) is further connected with a sensor rotor component (3), and a sensor arranged on the turbine stator is matched with the sensor rotor component (3).
7. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 1, wherein: the half coupling (7) is connected with the thrust disc (4) through a screw (6).
8. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 7, wherein: the half coupling (7) is matched with the thrust disc (4) through end face teeth.
9. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 1, wherein: the thrust disc (4) is connected with a rotor shaft sleeve of a protection bearing (5), the rotor shaft sleeve of the protection bearing (5) is sleeved with the protection bearing (5), and the thrust disc (4) is connected with a second locking nut (10) which is used for axially positioning the protection bearing (5) in a threaded manner.
10. The magnetic levitation turbine structure convenient to disassemble and assemble as claimed in claim 9, wherein: when the turbine rotor (1) normally operates, a gap is formed between the rotor shaft sleeve of the protective bearing (5) and the protective 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 true CN115898553A (en) | 2023-04-04 |
| CN115898553B CN115898553B (en) | 2024-06-04 |
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