CN110332020A - A kind of closed cycle turbine electricity generation system rotor structure based on air-bearing - Google Patents
A kind of closed cycle turbine electricity generation system rotor structure based on air-bearing Download PDFInfo
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- CN110332020A CN110332020A CN201910647991.5A CN201910647991A CN110332020A CN 110332020 A CN110332020 A CN 110332020A CN 201910647991 A CN201910647991 A CN 201910647991A CN 110332020 A CN110332020 A CN 110332020A
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- generation system
- electricity generation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/08—Adaptations for driving, or combinations with, pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
- F01D5/02—Blade-carrying members, e.g. rotors
- F01D5/04—Blade-carrying members, e.g. rotors for radial-flow machines or engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/04—Units comprising pumps and their driving means the pump being fluid-driven
- F04D25/045—Units comprising pumps and their driving means the pump being fluid-driven the pump wheel carrying the fluid driving means, e.g. turbine blades
-
- 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
-
- 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
- F04D29/26—Rotors specially for elastic fluids
- F04D29/266—Rotors specially for elastic fluids mounting compressor rotors on shafts
-
- 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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2230/00—Manufacture
- F05D2230/60—Assembly methods
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The present invention relates to a kind of closed cycle turbine electricity generation system rotor structure based on air-bearing, including locking nut, compressor impeller, composite shaft sleeve, connecting bushing, transition axle sleeve, motor shaft, fixed hub, radial axle sleeve and turbine rotor.There is external screw thread on the compressor impeller, there is the annular end face of coaxial axial thrust bearing cooperation on the composite shaft sleeve, described connecting bushing one end has internal screw thread, the other end to have external screw thread, there is the internal screw thread mutually assembled with transition axle sleeve in one end of the motor shaft, the other end of the motor shaft has the internal screw thread mutually assembled with turbine rotor external screw thread, the fixing axle is cased with the internal screw thread mutually assembled with turbine rotor external screw thread, the external screw thread for having same fixed hub internal screw thread mutually to assemble on the turbine rotor with motor shaft internal screw thread.The rotor structure is directed to the characteristics of air-bearing, can be improved the reliability of closed cycle turbine electricity generation system.
Description
Technical field
The invention belongs to closed cycle radial turbine power generation system structure design fields, and in particular to one kind is based on air bearing
The closed cycle turbine electricity generation system rotor structure of bearing.
Background technique
Closed cycle turbine electricity generation system, can be by certain gas work as a kind of new and effective heating power reformulations
Matter realizes conversion of the thermal energy to electric energy by absorbing the thermal processions such as heat, expansion work, heat release and compression under enclosed environment.
Typical closed cycle radial-flow turbine electricity generation system is mainly by zero, turbine, compressor, bearing, generator, regenerator, shaft coupling etc.
Part composition.
The rotor of closed cycle radial-flow turbine electricity generation system mainly includes turbine and compressor impeller rotor and generator
Rotor two parts are one of the component of core the most in closed cycle radial-flow turbine electricity generation system, stable operation, heat to system
Photoelectric transformation efficiency, reliability and service life play conclusive effect.Existing closed cycle radial-flow turbine electricity generation system rotor master
It to be assembled by components such as turbine rotor, main shaft, compressor impeller, motor shaft, shaft couplings.Closed cycle radial-flow turbine hair
During operation, rotor is in high speed rotation state to electric system, and revolving speed is up to tens of thousands of revs/min, some closed cycle whirlpools
The rotor speed of wheel electricity generation system is even up to ten tens of thousands of revs/min, and rotor once breaks down, and not only results in closed cycle
System can not work normally, but also can cause the structural failure of closed cycle turbine electricity generation system.Therefore, rotor is rationally designed
Structure is most important for the reliability for guaranteeing shrouded turbine electricity generation system.
Existing closed cycle radial turbine electricity generation system rotor is usually connected by interference by shaft coupling and realizes whirlpool
Wheel and compressor impeller rotor with the connection between rotor, specifically: main shaft is turned with turbine respectively by its both ends inner hole
Son wheel back boss and the back boss interference of compressor impeller wheel are joined together to form power shaft, then pass through the both ends of shaft coupling
With the elastic conjunction between motor shaft one end and compressor impeller input end wheel hub, power shaft and motor shaft are connected respectively for inner hole
It is connected together, forms complete rotor.Rotor use interference connection structure, although can guarantee to a certain extent each component it
Between concentricity, but due to interference bonding strength depend on each components between fitted position and tolerance, to assembly position
Machining accuracy propose very high request；In addition rotor is influenced by centrifugal load and thermal force during the work time, interconnecting piece
The practical magnitude of interference of position can reduce, and bonding strength and rigidity cannot be guaranteed, and rotor component, which is also easy to produce, to be loosened, and seriously affect enclosed
The functional reliability of circulatory turbine electricity generation system.
The characteristics of for closed cycle radial-flow turbine electricity generation system rotor and bearing and requirement rationally design rotor
Structure reduces influence of the assembling process to the rigidity and the accuracy of manufacture of rotor, is to improve rotor run stability and guarantee enclosed
The key of circulatory turbine Generation System Reliability.
Summary of the invention
The present invention is directed to closed cycle radial-flow turbine electricity generation system rotor design problem, proposes a kind of based on air-bearing
Closed cycle turbine electricity generation system rotor structure.According to closed cycle turbine electricity generation system turbine wheel, compressor impeller and
The dimensional parameters of motor, by rationally designing locking nut, compressor impeller, composite shaft sleeve, connecting bushing, transition axle sleeve, electricity
The structure size and Screw assembly torque of arbor, fixed hub, radial axle sleeve and turbine rotor.Zero is formed completing rotor
On the basis of part processing, the assembly of turbine end radial direction sleeve assembly and motor shaft is completed first, secondly completes turbine end radial axle
Component, motor shaft are covered with the assembly between turbine rotor, then complete transition axle sleeve with the assembly between motor shaft, generator terminal of calming the anger
The assembly of composite shaft sleeve component finally completes assembly and compressor impeller of the generator terminal composite shaft sleeve component of calming the anger with transition axle sleeve
With the assembly calmed the anger between generator terminal composite shaft sleeve component, turbine rotor, and by locking nut assembly on turbine rotor, realization pair
The locking of rotor structure forms complete turbine electricity generation system rotor structure.The rotor reduces supporting-point quantity, can enhance
Rotor rigidity, reduces the manufacture and assembly difficulty of rotor, the operation for being remarkably improved closed cycle radial-flow turbine electricity generation system is steady
Qualitative and structural reliability.
Technical solution of the present invention:
A kind of closed cycle turbine electricity generation system rotor structure based on air-bearing, including locking nut, gas compressor blade
Wheel, composite shaft sleeve, connecting bushing, transition axle sleeve, motor shaft, fixed hub, radial axle sleeve and turbine rotor.The locking nut
Rotation direction it is opposite with rotation direction when turbine electricity generation system working rotor；The compressor impeller has central through hole, described to calm the anger
The external screw thread for thering is same connecting bushing internal screw thread mutually to assemble on machine impeller；There is coaxial axial thrust bearing cooperation on the composite shaft sleeve
Annular end face, the composite shaft sleeve, which uses, has wear-resisting and resistant to high temperature ceramic material, and the composite shaft sleeve is assembled by inner hole
On connecting bushing；There are the internal screw thread mutually assembled with compressor impeller external screw thread, the connecting bushing in described connecting bushing one end
The other end have the external screw thread mutually assembled with transition axle sleeve internal screw thread；Have on the inside of the transition axle sleeve and connecting bushing external screw thread
The mutually internal screw thread of assembly has the external screw thread mutually assembled with motor shaft one end internal screw thread on the outside of the transition axle sleeve；The motor
Axis is made of magnetic core and motor shaft sleeve, and the magnetic core of the motor shaft is located inside motor shaft sleeve, one end of the motor shaft have with
The internal screw thread that transition axle sleeve mutually assembles, the other end of the motor shaft have the internal screw thread mutually assembled with turbine rotor external screw thread；Institute
Stating radial axle sleeve is cirque structure, and the radial direction axle sleeve, which uses, has wear-resisting and resistant to high temperature ceramic material, the radial axle
Set is assemblied on fixed hub by inner hole；The fixing axle is cased with the internal screw thread mutually assembled with turbine rotor external screw thread, described
Fixing axle is cased with the external cylindrical surface mutually assembled with radial axle sleeve；The turbine rotor is welded by turbine wheel and shaft, institute
The external screw thread for having same fixed hub internal screw thread mutually to assemble on turbine rotor with motor shaft internal screw thread is stated, is had on the turbine rotor same
The optical axis that compressor impeller through-hole mutually assembles has the external screw thread of same locking screw parent phase assembly, the turbine on the turbine rotor
There is clamping nut in turbine wheel one end of rotor.
A kind of closed cycle turbine electricity generation system method for manufacturing rotor based on air-bearing, comprising the following steps:
A, the closed cycle turbine electricity generation system rotor structure dimensional parameters based on air-bearing are determined: according to closed cycle
The dimensional parameters of the turbine wheel of turbine electricity generation system, compressor impeller and motor determine that closed cycle turbine electricity generation system turns
Son composition components, that is, locking nut, compressor impeller, composite shaft sleeve, connecting bushing, transition axle sleeve, motor shaft, fixed hub,
The structure size of radial axle sleeve and turbine rotor；
B, the assembly threaded tightening force square of turbine electricity generation system rotor structure is determined: according to closed cycle turbine electricity generation system
Working status parameter, determine based on air-bearing closed cycle turbine electricity generation system rotor composition components between screw thread
Assemble locking torque；
C, the manufacture of turbine electricity generation system rotor structure composition components is carried out: according to step a determination based on air-bearing shafts
The parameters of structural dimension of the closed cycle turbine electricity generation system rotor composition components held, processes locking nut, compressor respectively
Impeller, composite shaft sleeve, connecting bushing, transition axle sleeve, motor shaft, fixed hub, radial axle sleeve and turbine rotor；
D, the assembly of turbine end radial direction sleeve assembly: by the way of interference fit, by radial axle set assembly in fixing axle
On the external cylindrical surface of set, turbine end radial direction sleeve assembly is formed；
E, the motor shaft magnetic core and motor shaft of processing the assembly of motor shaft magnetic core and motor shaft axle sleeve: will be completed in step c
Axle sleeve realizes the elastic conjunction of motor shaft magnetic core and motor shaft axle sleeve using heating motor shaft axle sleeve mode, guarantees motor shaft magnetic
Core one end is adjacent to motor shaft axle sleeve inner face, forms complete motor shaft；
F, turbine end radial direction sleeve assembly, motor shaft are with the assembly between turbine rotor: the screwing force determined according to step b
Square is screwed by screw thread, and successively the motor shaft assembly that the step d turbine end radial direction sleeve assembly formed and step e are formed exists
On turbine rotor, and guarantee that end face is mutually adjacent to；
G, transition axle sleeve is with the assembly between motor shaft: the screw-down torque determined according to step b is screwed by screw thread, will
Transition axis set is assemblied on motor shaft, and the magnetic core of the end face and motor shaft that make transition axle sleeve is adjacent to；
H, the assembly of generator terminal of calming the anger composite shaft sleeve component: by the way of interference fit, composite shaft sleeve assembly is being connected
On the external cylindrical surface of axle sleeve, generator terminal composite shaft sleeve component of calming the anger is formed；
I, assembly of generator terminal of the calming the anger composite shaft sleeve component with transition axle sleeve: the Screw assembly screwing force determined according to step b
Square, by step H-shaped at calm the anger generator terminal composite shaft sleeve component and transition axis set is assembled together, be adjacent to end face mutually；
J, compressor impeller is with the assembly calmed the anger between generator terminal composite shaft sleeve component, turbine rotor: compressor impeller is led to
It crosses central through hole to be mounted on turbine rotor, according to the screw-down torque that step b is determined, connect by the way that the external screw thread of compressor impeller is same
Screw thread between the internal screw thread of spindle set screws assembly, by compressor impeller with calm the anger generator terminal composite shaft sleeve component, turbine rotor
It is assembled together, and is adjacent to end face；
K, it the screw-threaded coupling of closed cycle turbine electricity generation system rotor assembling structure: is tightened according to the screw thread that step b is determined
Locking nut is mounted on the turbine rotor for completing assembly in step j by torque, is realized the locking to rotor structure, has been formed
Whole closed cycle turbine electricity generation system rotor structure.
The beneficial effects of the present invention are:
A kind of closed cycle turbine electricity generation system rotor based on air-bearing proposed by the present invention, using the same whirlpool of motor shaft
The structure that wheel and compressor shaft are integrated, is avoided the overall stiffness for being improved shaft using shaft coupling, can significantly increase whirlpool
Take turns the Stability and dependability of electricity generation system rotor operation；Composite shaft sleeve and radial axle sleeve are used with self-lubricating, wear-resisting and resistance to
The ceramic material of high temperature can reduce the abrasion loss of rotor in the starting of closed cycle turbine electricity generation system and docking process, improve
The service life of turbine electricity generation system rotor；Compressor impeller, composite shaft sleeve, connecting bushing, transition axle sleeve, motor shaft, fixation
Using threaded connection and end face compression fit structure between axle sleeve, radial axle sleeve and turbine rotor, it can not only guarantee rotor
Structural strength and the overall stiffness for improving rotor structure, and the dimension of closed cycle turbine electricity generation system rotor structure can be improved
Repairing property reduces maintenance cost, the repeatable assembly of turbine electricity generation system rotor structure may be implemented, additionally convenient for the survey of rotor
Examination, improves the reliability of rotor-support-foundation system.
Detailed description of the invention
Fig. 1 is that a kind of closed cycle turbine electricity generation system rotor structure based on air-bearing described in the embodiment of the present invention shows
It is intended to.
Fig. 2 is compressor impeller structural schematic diagram described in the embodiment of the present invention.
Fig. 3 is composite shaft sleeve structural schematic diagram described in the embodiment of the present invention.
Fig. 4 is connecting bushing structural schematic diagram described in the embodiment of the present invention.
Fig. 5 is transition axle sleeve structure schematic diagram described in the embodiment of the present invention.
Fig. 6 is motor shaft structure schematic diagram described in the embodiment of the present invention.
Fig. 7 is radial direction axle sleeve structure schematic diagram described in the embodiment of the present invention.
Fig. 8 is fixed hub structural schematic diagram described in the embodiment of the present invention.
Fig. 9 is turbine rotor structural schematic diagram described in the embodiment of the present invention.
The radial axle sleeve of 1 locking nut, 2 compressor impeller, 3 composite shaft sleeve, 4 connecting bushing, 5 transition axle sleeve, 6 motor shaft 7
8 fixed hub, 9 turbine rotor, 10 compressor impeller external screw thread, 11 compressor impeller through-hole, 12 composite shaft sleeve annular end face 13
16 connecting bushing external cylindrical surface of composite shaft sleeve inner hole 14 connecting bushing internal screw thread, 15 connecting bushing external screw thread, 17 transition axle sleeve
In 18 20 motor shaft axle sleeve of transition axle sleeve 19 motor shaft magnetic core of internal screw thread of external screw thread, 21 motor shaft is matched with transition axle sleeve
23 fixed hub internal screw thread of internal screw thread, the 24 fixed hub outside cylinder that 22 motor shaft of screw thread is matched with turbine rotor external screw thread
28 turbine rotor optical axis of clamping nut, 29 turbine of the 26 turbine rotor external screw thread of radial inner hole of shaft sleeve of face 25,27 turbine rotor
The external screw thread that rotor is matched with locking screw
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.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of closed cycle turbine electricity generation system rotor structure based on air-bearing, including locking nut 1, gas compressor blade
Wheel 2, composite shaft sleeve 3, connecting bushing 4, transition axle sleeve 5, motor shaft 6, fixed hub 7, radial axle sleeve 8 and turbine rotor 9.It is described
The rotation direction of locking nut 1 is opposite with rotation direction when turbine electricity generation system working rotor；The compressor impeller 2 has central through hole
11, the external screw thread 10 for thering is same connecting bushing internal screw thread mutually to assemble on the compressor impeller 2；Have on the composite shaft sleeve 3 coaxial
The annular end face 12 of axial thrust bearing cooperation, the composite shaft sleeve 3, which uses, has wear-resisting and resistant to high temperature ceramic material, described multiple
Sympodium set 3 is assemblied on connecting bushing by inner hole 13；One end of the connecting bushing 4 has and 10 phase of compressor impeller external screw thread
The internal screw thread 14 of assembly, the other end of the connecting bushing 4 have the external screw thread 15 mutually assembled with transition axle sleeve internal screw thread；The mistake
There is the internal screw thread 18 mutually assembled with connecting bushing external screw thread in the inside for crossing axle sleeve 5, and the outside of the transition axle sleeve 5 has and motor shaft
The external screw thread 17 that one end internal screw thread mutually assembles；The motor shaft 6 is made of magnetic core 19 and motor shaft sleeve 20, the motor shaft 6
Magnetic core is located inside motor shaft sleeve, and there are the internal screw thread 21 mutually assembled with transition axle sleeve, the motor shaft in one end of the motor shaft 6
6 other end has the internal screw thread 22 mutually assembled with turbine rotor external screw thread；The radial direction axle sleeve 7 is cirque structure, the diameter
To axle sleeve 7 using having wear-resisting and resistant to high temperature ceramic material, the radial direction axle sleeve 7 is assemblied on fixed hub 8 by inner hole；
The fixed hub 8 has the internal screw thread 23 mutually assembled with turbine rotor external screw thread, and the fixed hub 8 has mutually to be filled with radial axle sleeve
The external cylindrical surface 24 matched；The turbine rotor 9 is welded by turbine wheel and shaft, has same fixation on the turbine rotor 9
The external screw thread 26 that axle sleeve internal screw thread is mutually assembled with motor shaft internal screw thread has same compressor impeller through-hole phase on the turbine rotor 9
The optical axis 28 of assembly has the external screw thread 29 of same locking screw parent phase assembly, the turbine of the turbine rotor 9 on the turbine rotor 9
There is clamping nut 27 in impeller one end.
A kind of closed cycle turbine electricity generation system rotor structure manufacturing method based on air-bearing, comprising the following steps:
A kind of closed cycle turbine electricity generation system rotor structure manufacturing method based on air-bearing, comprising the following steps:
A, the closed cycle turbine electricity generation system rotor structure dimensional parameters based on air-bearing are determined: according to closed cycle
The dimensional parameters of the turbine wheel of turbine electricity generation system, compressor impeller and motor determine that closed cycle turbine electricity generation system turns
Son composition components, that is, locking nut, compressor impeller, composite shaft sleeve, connecting bushing, transition axle sleeve, motor shaft, fixed hub,
The structure size of radial axle sleeve and turbine rotor；
The turbine wheel diameter of the present embodiment type closed cycle turbine electricity generation system is Ф 90mm, gas compressor blade wheel diameter
It is Ф 38mm for Ф 96mm, motor shaft diameter, direction of rotation when turbine electricity generation system working rotor is dextrorotation, is followed according to enclosed
The dimensional parameters of the turbine wheel of ring turbine electricity generation system, compressor impeller and motor, the internal screw thread ruler of determining locking nut 1
Very little is M9 × 1-H7H7-LH, and the size of the external screw thread 12 of determining compressor impeller 2 is M20 × 1-p6p6-LH, through-hole diameter
For Ф 10mm, the internal diameter of determining composite shaft sleeve 3 is Ф 28mm, and the size of determining 4 internal screw thread 14 of connecting bushing is M20 × 1-
H7H7-LH, external screw thread 15 size be M24 × 1-p6p6-LH, the internal screw thread 18 of determining transition axle sleeve 5 and external screw thread 17
Size is respectively M24 × 1-H7H7-LH and M36 × 1-p6p6-LH, and 19 diameter of bore of magnetic core of determining motor shaft 6 is Ф
14mm, internal screw thread 21 size be M36 × 1-H7H7-LH, the size of internal screw thread 22 is M20 × 1-H7H7-LH, determining radial direction
The internal diameter and outer diameter of axle sleeve 7 are respectively Ф 28mm and Ф 36mm, the size of the internal screw thread 23 of determining fixed hub 8 be M24 ×
1-H7H7-LH, the size of the external screw thread 29 of determining turbine rotor 9 is M9 × 1-p6p6-LH, shaft diameter is Ф 10mm, outer
The size of screw thread 26 is M24 × 1-p6p6-LH.
B, the assembly threaded tightening force square of turbine electricity generation system rotor structure is determined: according to closed cycle turbine electricity generation system
Working status parameter, determine based on air-bearing closed cycle turbine electricity generation system rotor composition components between screw thread
Assemble locking torque；
C, the manufacture of turbine electricity generation system rotor structure composition components is carried out: according to step a determination based on air-bearing shafts
The parameters of structural dimension of the closed cycle turbine electricity generation system rotor composition components held, processes locking nut, compressor respectively
Impeller, composite shaft sleeve, connecting bushing, transition axle sleeve, motor shaft, fixed hub, radial axle sleeve and turbine rotor；
D, the assembly of turbine end radial direction sleeve assembly: by the way of interference fit, by radial axle set assembly in fixing axle
On the external cylindrical surface of set, turbine end radial direction sleeve assembly is formed；
E, the motor shaft magnetic core and motor shaft of processing the assembly of motor shaft magnetic core and motor shaft axle sleeve: will be completed in step c
Axle sleeve realizes the elastic conjunction of motor shaft magnetic core and motor shaft axle sleeve using heating motor shaft axle sleeve mode, guarantees motor shaft magnetic
Core one end is adjacent to motor shaft axle sleeve inner face, forms complete motor shaft；
F, turbine end radial direction sleeve assembly, motor shaft are with the assembly between turbine rotor: the screwing force determined according to step b
Square is screwed by screw thread, and successively the motor shaft assembly that the step d turbine end radial direction sleeve assembly formed and step e are formed exists
On turbine rotor, and guarantee that end face is mutually adjacent to；
G, transition axle sleeve is with the assembly between motor shaft: the screw-down torque determined according to step b is screwed by screw thread, will
Transition axis set is assemblied on motor shaft, and the magnetic core of the end face and motor shaft that make transition axle sleeve is adjacent to；
H, the assembly of generator terminal of calming the anger composite shaft sleeve component: by the way of interference fit, composite shaft sleeve assembly is being connected
On the external cylindrical surface of axle sleeve, generator terminal composite shaft sleeve component of calming the anger is formed；
I, assembly of generator terminal of the calming the anger composite shaft sleeve component with transition axle sleeve: the Screw assembly screwing force determined according to step b
Square, by step H-shaped at calm the anger generator terminal composite shaft sleeve component and transition axis set is assembled together, be adjacent to end face mutually；
J, compressor impeller is with the assembly calmed the anger between generator terminal composite shaft sleeve component, turbine rotor: compressor impeller is led to
It crosses central through hole to be mounted on turbine rotor, according to the screw-down torque that step b is determined, connect by the way that the external screw thread of compressor impeller is same
Screw thread between the internal screw thread of spindle set screws assembly, by compressor impeller with calm the anger generator terminal composite shaft sleeve component, turbine rotor
It is assembled together, and is adjacent to end face；
K, it the screw-threaded coupling of closed cycle turbine electricity generation system rotor assembling structure: is tightened according to the screw thread that step b is determined
Locking nut is mounted on the turbine rotor for completing assembly in step j by torque, is realized the locking to rotor structure, has been formed
Whole closed cycle turbine electricity generation system rotor structure.
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 (9)
1. a kind of closed cycle turbine electricity generation system rotor structure based on air-bearing, it is characterised in that: including locking nut
(1), compressor impeller (2), composite shaft sleeve (3), connecting bushing (4), transition axle sleeve (5), motor shaft (6), fixed hub (7),
Radial axle sleeve (8) and turbine rotor (9)；
The rotation direction of the locking nut (1) is opposite with rotation direction when turbine electricity generation system working rotor；
There are the internal screw thread (14) mutually assembled with compressor impeller external screw thread (10), the connection in one end of the connecting bushing (4)
The other end of axle sleeve (4) has the external screw thread (15) mutually assembled with transition axle sleeve internal screw thread；
There are the internal screw thread (18) mutually assembled with connecting bushing external screw thread, the transition axle sleeve (5) on the inside of the transition axle sleeve (5)
Outside have the external screw thread (17) mutually assembled with motor shaft one end internal screw thread；
The radial direction axle sleeve (7) is cirque structure, and the radial direction axle sleeve (7) is using with ceramic material wear-resisting and resistant to high temperature
Material, the radial direction axle sleeve (7) are assemblied on fixed hub (8) by inner hole；
The fixed hub (8) has the internal screw thread (23) mutually assembled with turbine rotor external screw thread, and the fixed hub (8) has same diameter
The external cylindrical surface (24) mutually assembled to axle sleeve.
2. a kind of closed cycle turbine electricity generation system rotor structure based on air-bearing according to claim 1, special
Sign is: the compressor impeller (2) has central through hole (11), has same connecting bushing internal screw thread on the compressor impeller (2)
The mutually external screw thread (10) of assembly.
3. a kind of closed cycle turbine electricity generation system rotor structure based on air-bearing according to claim 1, special
Sign is: having the annular end face (12) of coaxial axial thrust bearing cooperation on the composite shaft sleeve (3), the composite shaft sleeve (3) is adopted
With with ceramic material wear-resisting and resistant to high temperature, the composite shaft sleeve (3) is assemblied on connecting bushing by inner hole (13).
4. a kind of closed cycle turbine electricity generation system rotor structure based on air-bearing according to claim 1, special
Sign is: the motor shaft (6) is made of magnetic core (19) and motor shaft sleeve (20), and the magnetic core of the motor shaft (6) is located at motor
Inside axle sleeve, there is an internal screw thread (21) mutually assembled with transition axle sleeve in one end of the motor shaft (6), the motor shaft (6) it is another
There is the internal screw thread (22) mutually assembled with turbine rotor external screw thread in one end.
5. a kind of closed cycle turbine electricity generation system rotor structure based on air-bearing according to claim 1, special
Sign is: the turbine rotor (9) is welded by turbine wheel and shaft, has same fixed hub on the turbine rotor (9)
The external screw thread (26) that internal screw thread is mutually assembled with motor shaft internal screw thread has same compressor impeller through-hole phase on the turbine rotor (9)
The optical axis (28) of assembly has the external screw thread (29) of same locking screw parent phase assembly, the turbine rotor on the turbine rotor (9)
(9) turbine wheel one end has clamping nut (27).
6. a kind of closed cycle turbine electricity generation system rotor structure based on air-bearing according to claim 1, a kind of
Closed cycle turbine electricity generation system method for manufacturing rotor based on air-bearing, it is characterised in that: the following steps are included:
A, the closed cycle turbine electricity generation system rotor structure dimensional parameters based on air-bearing are determined；
B, the assembly threaded tightening force square of turbine electricity generation system rotor structure is determined；
C, the manufacture of turbine electricity generation system rotor structure composition components is carried out；
D, the assembly of turbine end radial direction sleeve assembly；
E, the assembly of motor shaft magnetic core and motor shaft axle sleeve；
F, turbine end radial direction sleeve assembly, motor shaft are the same as the assembly between turbine rotor；
G, transition axle sleeve is with the assembly between motor shaft: the screw-down torque determined according to step b is screwed by screw thread, by transition
Axle sleeve is assemblied on motor shaft, and the magnetic core of the end face and motor shaft that make transition axle sleeve is adjacent to；
H, the assembly of generator terminal of calming the anger composite shaft sleeve component: by the way of interference fit, composite shaft sleeve is assembled in connecting bushing
External cylindrical surface on, formation is calmed the anger generator terminal composite shaft sleeve component；
I, assembly of generator terminal of the calming the anger composite shaft sleeve component with transition axle sleeve: the Screw assembly screw-down torque determined according to step b, it will
Step H-shaped at calm the anger generator terminal composite shaft sleeve component and transition axis set is assembled together, be adjacent to end face mutually；
J, compressor impeller is the same as the assembly calmed the anger between generator terminal composite shaft sleeve component, turbine rotor；
K, the screw-threaded coupling of closed cycle turbine electricity generation system rotor assembling structure: the threaded tightening force square determined according to step b,
Locking nut is mounted on the turbine rotor for completing assembly in step j, realizes that the locking to rotor structure, formation are completely closed
Formula circulatory turbine electricity generation system rotor structure.
7. a kind of closed cycle turbine electricity generation system rotor structure manufacturer based on air-bearing according to claim 6
Method, it is characterised in that: in step d: by the way of interference fit, radial axle set is assembled to the external cylindrical surface in fixed hub
On, form turbine end radial direction sleeve assembly.
8. a kind of closed cycle turbine electricity generation system rotor structure manufacturer based on air-bearing according to claim 6
Method, it is characterised in that: in step f, according to the screw-down torque that step b is determined, screwed by screw thread, successively form step d
Turbine end radial direction sleeve assembly and the motor shaft that is formed of step e be assemblied on turbine rotor, and guarantee that end face is mutually adjacent to.
9. a kind of closed cycle turbine electricity generation system rotor structure manufacturer based on air-bearing according to claim 6
Method, it is characterised in that: in step j, compressor impeller is mounted on turbine rotor by central through hole, it is true according to step b
Fixed screw-down torque screws assembly with the screw thread between the internal screw thread of connecting bushing by the external screw thread of compressor impeller, will press
Compressor wheel is assembled together with calm the anger generator terminal composite shaft sleeve component, turbine rotor, and is adjacent to end face.
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| CN110332020B (en) | 2022-07-12 |
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