CN110344892B - Radial flow turbine power generation system integrated rotor and manufacturing process thereof - Google Patents
Radial flow turbine power generation system integrated rotor and manufacturing process thereof Download PDFInfo
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- CN110344892B CN110344892B CN201910647990.0A CN201910647990A CN110344892B CN 110344892 B CN110344892 B CN 110344892B CN 201910647990 A CN201910647990 A CN 201910647990A CN 110344892 B CN110344892 B CN 110344892B
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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
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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
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
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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
- 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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/02—Selection of particular materials
- F04D29/023—Selection of particular materials especially adapted for elastic fluid pumps
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
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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
- 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
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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
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/601—Mounting; Assembling; Disassembling specially adapted for elastic fluid pumps
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- 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)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to an integrated rotor of a runoff turbine power generation system and a manufacturing process thereof. On the basis of finishing the processing of the rotor structure component, firstly finishing the assembly of the turbine end radial shaft sleeve assembly and the motor shaft, secondly finishing the assembly of the turbine end radial shaft sleeve assembly, the motor shaft and the turbine rotor, then finishing the assembly between the transition shaft sleeve and the motor shaft, between the connecting shaft sleeve and the transition shaft sleeve and between the composite shaft sleeve and the connecting shaft sleeve, and finally finishing the assembly of the compressor impeller, the turbine rotor and the elastic locking ring, so that the elastic locking ring is arranged in the compressor impeller locking ring groove to realize locking. The rotor structure can enhance the rigidity of the rotor, prevent the rotor from loosening and improve the structural reliability of the rotor of the closed type circulation radial flow turbine power generation system.
Description
Technical Field
The invention belongs to the field of structural design of a closed-cycle radial turbine power generation system, and particularly relates to an integrated rotor of a radial turbine power generation system and a manufacturing process thereof.
Background
As a novel efficient thermodynamic conversion form, the closed-cycle turbine power generation system can realize conversion from heat energy to electric energy through thermodynamic processes such as heat absorption, expansion work, heat release, compression and the like in a closed environment by means of a certain gas working medium. A typical closed-cycle radial-flow turbine power generation system comprises a radial-flow turbine rotor, a gas compressor, a bearing, a generator, a heat regenerator, a coupling and the like.
The rotor of the closed circulation radial flow turbine power generation system comprises a turbine, a compressor impeller rotor and a generator rotor, is one of the most core components in the closed circulation radial flow turbine power generation system, and plays a decisive role in stable operation, thermoelectric conversion efficiency, reliability and service life of the system. In the operation process of the closed circulation radial flow turbine power generation system, the rotor is in a high-speed rotation state, the rotation speed of the rotor can reach tens of thousands of revolutions per minute, and some rotors even reach hundreds of thousands of revolutions per minute. Therefore, the reasonable design of the structure of the rotor is very important for ensuring the reliability of the closed turbine power generation system.
The existing closed circulation radial turbine power generation system rotor mainly comprises a turbine rotor, a main shaft, a compressor impeller, a motor shaft, a coupler and other parts, and the turbine and the compressor impeller rotor are connected with the motor rotor through interference connection by means of the coupler, and the closed circulation radial turbine power generation system rotor specifically comprises the following components: the main shaft is respectively connected with a turbine rotor wheel back boss and a compressor impeller wheel back boss in an interference manner through inner holes at two ends of the main shaft to form a power rotating shaft, and then the power rotating shaft and the motor shaft are connected together through the interference assembly between the inner holes at two ends of the coupler and a hub at one end of the motor shaft and a hub at the inlet end of the compressor impeller to form a complete rotor. By adopting an interference connection assembly mode, although the coaxiality of each part of the rotor can be ensured to a certain extent, the interference connection strength of the rotor depends on the assembly size and the tolerance of each part, and high requirements are provided for the machining precision of the assembly part of the part; in addition, the actual interference magnitude of the rotor in the working process can be reduced, the connection strength of the rotor cannot be guaranteed, the rotor component parts are easy to loosen, and the working reliability of the closed-cycle turbine power generation system is seriously influenced. In addition, the rotor has high processing quality requirement and high assembly difficulty.
Aiming at the characteristics and the use requirements of a rotor and a bearing of a closed circulation radial flow turbine power generation system, the structure of the rotor is reasonably designed, the connection strength of rotor parts is improved, the assembly difficulty is reduced, and the method is an effective technical way for improving the operation stability of the rotor and ensuring the reliability of the closed circulation radial flow turbine power generation system.
Disclosure of Invention
The invention provides an integrated rotor of a radial flow turbine power generation system and a manufacturing process thereof, aiming at the design problem of the rotor of the closed circulation radial flow turbine power generation system. According to the size parameters of a turbine, a gas compressor and a motor of the closed-cycle turbine power generation system, the structure sizes and the thread assembling and screwing torque of a gas compressor impeller, an elastic locking ring, a composite shaft sleeve, a connecting shaft sleeve, a transition shaft sleeve, a motor shaft, a fixed shaft sleeve, a radial shaft sleeve and a turbine rotor are reasonably designed. On the basis of finishing the processing of the rotor structure component, firstly finishing the assembly of the turbine end radial shaft sleeve assembly and the motor shaft, secondly finishing the assembly of the turbine end radial shaft sleeve assembly, the motor shaft and the turbine rotor, then finishing the assembly between the transition shaft sleeve and the motor shaft, between the connecting shaft sleeve and the transition shaft sleeve and between the composite shaft sleeve and the connecting shaft sleeve, and finally finishing the assembly of the compressor impeller, the turbine rotor and the elastic locking ring, so that the elastic locking ring is arranged in the compressor impeller locking ring groove to realize locking. The integrated rotor structure integrates the rotating shafts of the turbine and the gas compressor with the motor shaft, so that the rigidity of the rotor can be increased, and the operation stability of the closed circulation radial flow turbine power generation system is improved; the locking structure can effectively prevent the rotor structure from loosening in the working process, and the working reliability of the rotor is improved.
The technical scheme of the invention is as follows:
an integrated rotor structure of a radial flow turbine power generation system comprises a gas compressor impeller, an elastic locking ring, a composite shaft sleeve, a connecting shaft sleeve, a transition shaft sleeve, a motor shaft, a fixed shaft sleeve, a radial shaft sleeve and a turbine rotor. The compressor impeller is provided with an outer cylindrical surface assembled with the connecting shaft sleeve, a blind hole is formed in the center of the compressor impeller, a unthreaded hole, a locking ring groove and an internal thread are formed in the blind hole in the center of the compressor impeller, and the rotation direction of the internal thread of the compressor impeller is the same as the rotation direction of a turbine power generation system rotor during working; the elastic locking ring is arranged in the locking ring grooves of the turbine rotor and the compressor impeller; the composite shaft sleeve is provided with an annular end face matched with the axial thrust bearing, the composite shaft sleeve is made of a ceramic material with self-lubricating property, wear resistance and high temperature resistance, and the composite shaft sleeve is assembled on the connecting shaft sleeve through an inner hole; one end of the connecting shaft sleeve is provided with an inner cylindrical surface assembled with the compressor impeller, one end of the connecting shaft sleeve is provided with an outer cylindrical surface assembled with the composite shaft sleeve, and the other end of the connecting shaft sleeve is provided with an external thread assembled with the internal thread of the transition shaft sleeve; the inner side of the transition shaft sleeve is provided with an internal thread assembled with the external thread of the connecting shaft sleeve, and the outer side of the transition shaft sleeve is provided with an external thread assembled with the internal thread at one end of the motor shaft; the motor shaft consists of a magnetic core and a motor shaft sleeve, the magnetic core of the motor shaft is positioned in the motor shaft sleeve, one end of the motor shaft is provided with an internal thread assembled with the transition shaft sleeve, and the other end of the motor shaft is provided with an internal thread assembled with the external thread of the turbine rotor; the radial shaft sleeve is of a circular ring structure, the radial shaft sleeve is made of a ceramic material with self-lubricating, wear-resisting and high-temperature-resisting properties, and the radial shaft sleeve is assembled on the fixed shaft sleeve through an inner hole; the fixed shaft sleeve is provided with an internal thread assembled with the external thread of the turbine rotor, and the fixed shaft sleeve is provided with an external cylindrical surface assembled with the radial shaft sleeve; the turbine rotor is formed by turbine wheel and pivot welding, there is the external screw thread of assembling mutually with fixed axle sleeve internal thread and motor shaft internal thread on the turbine rotor, there is the external screw thread of assembling mutually with compressor impeller internal thread on the turbine rotor, there is the locking annular on the turbine rotor, turbine rotor one end has the clamping nut.
A radial flow turbine power generation system integrated rotor manufacturing process comprises the following steps:
a. determining the structural size parameters of the integrated rotor of the radial flow turbine power generation system: according to the size parameters of a turbine impeller, a compressor impeller and a motor of the closed-cycle turbine power generation system, determining the structural sizes of rotor components of the turbine power generation system, namely the compressor impeller, an elastic locking ring, a composite shaft sleeve, a connecting shaft sleeve, a transition shaft sleeve, a motor shaft, a fixed shaft sleeve, a radial shaft sleeve and a turbine rotor;
b. determining the screw thread assembling and screwing torque of the integrated rotor structure: determining a thread assembling and screwing torque between the integrated rotor component parts of the radial flow turbine power generation system according to the rotor dynamic characteristics, the torque transmission requirement and the rotating speed parameters of the closed cycle turbine power generation system;
c. manufacturing the integrated rotor component of the radial flow turbine power generation system: b, processing a compressor impeller, an elastic locking ring, a composite shaft sleeve, a connecting shaft sleeve, a transition shaft sleeve, a motor shaft, a fixed shaft sleeve, a radial shaft sleeve and a turbine rotor according to the size parameters of the components of the turbine power generation system rotor determined in the step a;
d. assembling a turbine end radial shaft sleeve assembly: assembling the radial shaft sleeve on the outer cylindrical surface of the fixed shaft sleeve, and ensuring that the matching end surfaces are tightly attached to form a turbine end radial shaft sleeve assembly;
e. Assembling a motor shaft magnetic core and a motor shaft sleeve: c, heating the motor shaft sleeve to realize interference assembly of the motor shaft magnetic core and the motor shaft sleeve, so that one end of the motor shaft magnetic core is tightly attached to the inner end face of the shaft sleeve to form a complete motor shaft;
f. assembling the turbine end radial shaft sleeve assembly, the motor shaft and the turbine rotor: d, according to the screwing torque determined in the step b, screwing through threads, and sequentially assembling the turbine end radial shaft sleeve assembly formed in the step d and the motor shaft formed in the step e on a turbine rotor to enable the end faces to be attached to each other;
g. assembling the transition shaft sleeve and the motor shaft: b, enabling the transition shaft sleeve to penetrate through the turbine rotor, screwing the transition shaft sleeve through the threads according to the assembling and screwing torque determined in the step b, and assembling the transition shaft sleeve on the motor shaft to enable the end face of the transition shaft sleeve to be tightly attached to the magnetic core of the motor shaft;
h. assembling the connecting shaft sleeve and the transition shaft sleeve: b, enabling the connecting shaft sleeve to penetrate through the turbine rotor, screwing the connecting shaft sleeve and the transition shaft sleeve together through threads according to the assembling and screwing torque determined in the step b, and ensuring that the matching end surfaces of the connecting shaft sleeve and the transition shaft sleeve are tightly attached;
i. Assembling the composite shaft sleeve and the connecting shaft sleeve: the composite shaft sleeve penetrates through the turbine rotor and is assembled on the outer cylindrical surface of the connecting shaft sleeve, so that the matched end surfaces of the composite shaft sleeve and the transition shaft sleeve are tightly attached;
j. assembling the compressor impeller with the turbine rotor and the elastic locking ring: and c, installing the elastic locking ring in the turbine rotor locking ring groove, assembling the compressor impeller together with the turbine rotor and the elastic locking ring through screwing the compressor impeller and the turbine rotor together according to the assembling and screwing torque determined in the step b, and enabling the elastic locking ring to be elastically inserted into the locking ring groove of the compressor impeller so as to realize the locking of the rotor structure.
The beneficial effects of the invention are:
according to the integrated rotor of the radial flow turbine power generation system and the forming process thereof, an integrated structure of a turbine and a gas compressor rotating shaft and a motor shaft is adopted, so that the integral rigidity of the rotor can be greatly improved, and the stability and the working reliability of the operation of the rotor of the turbine power generation system are enhanced; the composite shaft sleeve and the radial shaft sleeve are made of ceramic materials with self-lubricating property, wear resistance and high temperature resistance, so that the abrasion loss of a contact part of a gas floating bearing and a rotor in a closed-cycle turbine power generation system during starting and stopping can be effectively reduced, and the service life of the turbine power generation system is prolonged; adopt screw thread locking structure, can prevent effectively that rotor assembly structure from taking place the pine in the course of the work and taking off, further improve the structural reliability of rotor.
Drawings
Fig. 1 is a schematic structural diagram of an integrated rotor of a radial flow turbine power generation system according to an embodiment of the present invention.
Fig. 2 is a partially enlarged schematic view of the locking structure according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a compressor wheel according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a composite bushing according to an embodiment of the present invention.
Fig. 5 is a schematic structural diagram of the connecting bushing according to the embodiment of the invention.
Fig. 6 is a schematic structural diagram of a transition bushing according to an embodiment of the present invention.
Fig. 7 is a schematic view of a motor shaft structure according to an embodiment of the present invention.
Fig. 8 is a schematic structural view of a fixed shaft sleeve according to an embodiment of the invention.
FIG. 9 is a schematic view of a turbine rotor according to an embodiment of the present invention.
1 compressor impeller 2 elastic locking ring 3 composite shaft sleeve 4 connecting shaft sleeve 5 transition shaft sleeve
6 turbine rotor with motor shaft 7, radial shaft sleeve 8 and fixed shaft sleeve 9
10 compressor impeller outer cylindrical surface 11 compressor impeller locking ring groove 12 compressor impeller internal thread
13 the annular end surface 14 of the composite shaft sleeve and the inner hole 15 of the composite shaft sleeve are connected with the inner cylindrical surface of the shaft sleeve
16 outer cylindrical surface 17 of connecting shaft sleeve, 18 external threads of connecting shaft sleeve and 18 external threads of transition shaft sleeve
19 transition shaft sleeve internal thread 20 motor shaft magnetic core 21 motor shaft sleeve
22 internal thread matched with external thread of turbine rotor on motor shaft
23 motor shaft and transition shaft sleeve matched internal thread 24 fixed shaft sleeve outer cylindrical surface
25 fixed shaft sleeve internal thread 26 turbine rotor external thread 27 turbine rotor locking ring groove
30 compressor impeller unthreaded hole
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
An integrated rotor structure of a radial flow turbine power generation system comprises a gas compressor impeller 1, an elastic locking ring 2, a composite shaft sleeve 3, a connecting shaft sleeve 4, a transition shaft sleeve 5, a motor shaft 6, a radial shaft sleeve 7, a fixed shaft sleeve 8 and a turbine rotor 9. The compressor impeller 1 is provided with an outer cylindrical surface 10 assembled with the connecting shaft sleeve 4, the center of the compressor impeller 1 is provided with a blind hole, the blind hole in the center of the compressor impeller 1 is provided with a smooth hole 30, a locking ring groove 11 and an internal thread 12, and the rotation direction of the internal thread of the compressor impeller 1 is the same as the rotation direction of a rotor of a turbine power generation system during working; the elastic locking ring 2 is arranged in the locking ring grooves of the turbine rotor 9 and the compressor impeller 1; the composite shaft sleeve 3 is provided with an annular end face 13 matched with the axial thrust bearing, the composite shaft sleeve 3 is made of a ceramic material with self-lubricating property, wear resistance and high temperature resistance, and the composite shaft sleeve 3 is assembled on the connecting shaft sleeve through an inner hole 14; one end of the connecting shaft sleeve 4 is provided with an inner cylindrical surface 15 assembled with the compressor impeller, one end of the connecting shaft sleeve 4 is provided with an outer cylindrical surface 16 assembled with the composite shaft sleeve, and the other end of the connecting shaft sleeve 4 is provided with an external thread 17 assembled with the internal thread of the transition shaft sleeve; the inner side of the transition shaft sleeve 5 is provided with an internal thread 19 assembled with the external thread of the connecting shaft sleeve, and the outer side of the transition shaft sleeve 5 is provided with an external thread 18 assembled with the internal thread at one end of the motor shaft; the motor shaft 6 consists of a magnetic core 20 and a motor shaft sleeve 21, the magnetic core 20 of the motor shaft 6 is positioned in the motor shaft sleeve 21, one end of the motor shaft 6 is provided with an internal thread 23 assembled with the transition shaft sleeve, and the other end of the motor shaft 6 is provided with an internal thread 22 assembled with the external thread of the turbine rotor; the radial shaft sleeve 7 is of a circular structure, the radial shaft sleeve 7 is made of a ceramic material with self-lubricating, wear-resisting and high-temperature-resisting properties, and the radial shaft sleeve 7 is assembled on the fixed shaft sleeve through an inner hole; the fixed shaft sleeve 8 is provided with an internal thread 24 assembled with the external thread of the turbine rotor, and the fixed shaft sleeve 8 is provided with an external cylindrical surface 24 assembled with the radial shaft sleeve; turbine rotor 9 is formed by turbine wheel and pivot welding, there is external screw thread 26 with fixed axle sleeve internal thread and motor shaft internal thread phase assembly on the turbine rotor 9, there is external screw thread 28 with compressor wheel internal thread phase assembly on the turbine rotor 9, there is locking ring groove 27 on the turbine rotor 9, turbine rotor one end has clamping nut 29.
A radial flow turbine power generation system integrated rotor manufacturing process comprises the following steps:
a. determining the structural size parameters of the integrated rotor of the radial flow turbine power generation system: according to the size parameters of a turbine impeller, a compressor impeller and a motor of the closed-cycle turbine power generation system, determining the structural sizes of rotor components of the turbine power generation system, namely the compressor impeller 1, an elastic locking ring 2, a composite shaft sleeve 3, a connecting shaft sleeve 4, a transition shaft sleeve 5, a motor shaft 6, a fixed shaft sleeve 7, a radial shaft sleeve 8 and a turbine rotor 9;
the diameter of a turbine impeller, the diameter of a compressor impeller and the diameter of a motor shaft of the closed cycle turbine power generation system of the embodiment are phi 90mm, the diameter of a compressor impeller and the diameter of the motor shaft of the closed cycle turbine power generation system are phi 96mm, the rotating direction of a rotor of the turbine power generation system in working is right-handed, according to the size parameters of the turbine impeller, the compressor impeller and the motor of the closed cycle turbine power generation system, the size of an internal thread 12 of the compressor impeller 1 is determined to be M12X 1-H7H7-LH, the diameter of an optical hole is 387 12mm, the size of an external cylindrical surface 10 of the compressor impeller 1 is determined to be phi 20mm, the diameter of an internal cylindrical surface 14 of the composite shaft sleeve 3 is determined to be phi 28mm, the size of an internal cylindrical surface 15 of the connecting shaft sleeve 4 is determined to be phi 20mm, the size of an external cylindrical surface 16 is phi 28mm, the size of an external thread 17 is determined to be M24X 1-p6p6-LH, and the sizes of the internal thread 19 and the external thread 18 of the transition shaft sleeve 5 are determined to be M24X 1-H2-H and M6X 1-p6p6 LH, the inner hole diameter of the magnetic core 20 of the motor shaft 6 is determined to be phi 14mm, the size of the internal thread 23 is M36 multiplied by 1-H7H7-LH, the size of the internal thread 22 is M20 multiplied by 1-H7H7-LH, the inner diameter and the outer diameter of the determined radial shaft sleeve 7 are phi 28mm and phi 36mm respectively, the size of the internal thread 25 of the determined fixed shaft sleeve 8 is M24 multiplied by 1-H7H7-LH, the size of the external thread 26 of the determined turbine rotor 9 is M24 multiplied by 1-p6p6-LH, and the size of the external thread 28 is M12 multiplied by 1-p6p 6-LH.
b. Determining the screw thread assembling and screwing torque of the integrated rotor structure: determining a thread assembling and screwing torque between the integrated rotor component parts of the radial flow turbine power generation system according to the rotor dynamic characteristics, the torque transmission requirement and the rotating speed parameters of the closed cycle turbine power generation system;
c. manufacturing the integrated rotor component of the radial flow turbine power generation system: b, processing a compressor impeller, an elastic locking ring, a composite shaft sleeve, a connecting shaft sleeve, a transition shaft sleeve, a motor shaft, a fixed shaft sleeve, a radial shaft sleeve and a turbine rotor according to the size parameters of the components of the turbine power generation system rotor determined in the step a;
d. assembling the turbine end radial shaft sleeve assembly: assembling the radial shaft sleeve 7 on the outer cylindrical surface 24 of the fixed shaft sleeve 8, and ensuring that the matching end surfaces are attached tightly to form a turbine end radial shaft sleeve assembly;
e. assembling a motor shaft magnetic core and a motor shaft sleeve: c, adopting a mode of heating the motor shaft sleeve to heat the motor shaft sleeve 21 and the motor shaft magnetic core 20 processed in the step c, so as to realize interference assembly of the motor shaft magnetic core 20 and the motor shaft sleeve 21, and enabling one end of the motor shaft magnetic core to be tightly attached to the inner end face of the shaft sleeve to form a complete motor shaft 6;
f. assembling the turbine end radial shaft sleeve assembly and the motor shaft between the turbine rotor: c, according to the screwing torque determined in the step b, screwing through threads, and sequentially assembling the turbine end radial shaft sleeve assembly formed in the step d and the motor shaft 6 formed in the step e on a turbine rotor 9 to enable the end faces to be attached to each other;
g. Assembling the transition shaft sleeve and the motor shaft: b, enabling the transition shaft sleeve 5 to penetrate through the turbine rotor 9, screwing the transition shaft sleeve 5 on the motor shaft 6 through threads according to the assembling and screwing torque determined in the step b, and enabling the end face of the transition shaft sleeve to be tightly attached to the magnetic core of the motor shaft;
h. assembling the connecting shaft sleeve and the transition shaft sleeve: b, enabling the connecting shaft sleeve 4 to penetrate through the turbine rotor 9, screwing through threads according to the assembling and screwing torque determined in the step b, and assembling the connecting shaft sleeve 4 and the transition shaft sleeve 5 together to ensure that the matching end faces of the connecting shaft sleeve 4 and the transition shaft sleeve 5 are tightly attached;
i. assembling the composite shaft sleeve and the connecting shaft sleeve: the composite shaft sleeve 3 penetrates through the turbine rotor 9 and is assembled on an outer cylindrical surface 16 of the connecting shaft sleeve 4, so that the composite shaft sleeve 3 is tightly attached to the matching end surface of the transition shaft sleeve 5;
j. assembling the compressor impeller with the turbine rotor and the elastic locking ring: and (b) installing the elastic locking ring 2 in the locking ring groove 27 of the turbine rotor 9, assembling the compressor impeller 1 together with the turbine rotor 9 and the elastic locking ring 2 by screwing the compressor impeller 1 and the turbine rotor 9 together according to the assembling and screwing torque determined in the step b, and enabling the elastic locking ring 2 to be elastically inserted into the locking ring groove 11 of the compressor impeller 1 to realize the locking of the rotor structure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. The utility model provides an integrated rotor structure of runoff turbine power generation system which characterized in that: an integrated rotor structure of a radial flow turbine power generation system comprises a gas compressor impeller (1), an elastic locking ring (2), a composite shaft sleeve (3), a connecting shaft sleeve (4), a transition shaft sleeve (5), a motor shaft (6), a radial shaft sleeve (7), a fixed shaft sleeve (8) and a turbine rotor (9);
the compressor impeller (1) is provided with a first outer cylindrical surface (10) assembled with the connecting shaft sleeve (4), the center of the compressor impeller (1) is provided with a blind hole, and the blind hole in the center of the compressor impeller (1) is provided with a smooth hole (30), a first locking ring groove (11) and a first internal thread (12);
the composite shaft sleeve (3) is provided with an annular end face (13) matched with the axial thrust bearing, the composite shaft sleeve (3) is made of a ceramic material with self-lubricating property, wear resistance and high temperature resistance, and the composite shaft sleeve (3) is assembled on the connecting shaft sleeve (4) through an inner hole (14);
one end of the connecting shaft sleeve (4) is provided with an inner cylindrical surface (15) assembled with the compressor impeller, one end of the connecting shaft sleeve (4) is provided with a second outer cylindrical surface (16) assembled with the composite shaft sleeve, and the other end of the connecting shaft sleeve (4) is provided with a first external thread (17) assembled with a second internal thread (19) of the transition shaft sleeve (5);
A second internal thread (19) assembled with the first external thread (17) of the connecting shaft sleeve (4) is arranged on the inner side of the transition shaft sleeve (5), and a second external thread (18) assembled with a third internal thread (23) at one end of the motor shaft (6) is arranged on the outer side of the transition shaft sleeve (5);
the motor shaft (6) consists of a magnetic core (20) and a motor shaft sleeve (21), the magnetic core (20) of the motor shaft (6) is positioned inside the motor shaft sleeve (21), one end of the motor shaft (6) is provided with a third internal thread (23) assembled with the transition shaft sleeve, and the other end of the motor shaft (6) is provided with a fourth internal thread (22) assembled with a third external thread (26) of the turbine rotor (9);
the radial shaft sleeve (7) is of a circular structure, the radial shaft sleeve (7) is made of a ceramic material with self-lubricating property, wear resistance and high temperature resistance, and the radial shaft sleeve (7) is assembled on the fixed shaft sleeve through an inner hole;
a fifth internal thread (25) assembled with a third external thread (26) of the turbine rotor (9) is arranged on the fixed shaft sleeve (8), and a third outer cylindrical surface (24) assembled with the radial shaft sleeve is arranged on the fixed shaft sleeve (8);
the turbine rotor (9) is formed by welding a turbine impeller and a rotating shaft, a third external thread (26) assembled with a fifth internal thread (25) of a fixed shaft sleeve (8) and a fourth internal thread (22) of a motor shaft (6) is arranged on the turbine rotor (9), a fourth external thread (28) assembled with a first internal thread (12) of a compressor impeller (1) is arranged on the turbine rotor (9), a second locking ring groove (27) is arranged on the turbine rotor (9), and a clamping nut (29) is arranged at one end of the turbine rotor;
The turbine rotor (9) is assembled with the fixed shaft sleeve (8) and the motor shaft (6) through a third external thread (26) of the turbine rotor, is assembled with the compressor impeller (1) through a fourth external thread (28) of the turbine rotor, and is locked on an assembly structure of the turbine rotor (9) and the compressor impeller (1) through a second locking ring groove (27) and an elastic locking ring (2);
the fixed shaft sleeve (8) is assembled with the turbine rotor (9) through a fifth internal thread (25) and the end surface of the fixed shaft sleeve, and is assembled with the radial shaft sleeve through the third outer cylindrical surface (24);
the radial shaft sleeve (7) is assembled with the fixed shaft sleeve and the motor shaft through the inner hole and the end surface of the radial shaft sleeve;
the motor shaft (6) is assembled with the transition shaft sleeve through a third internal thread (23) of the motor shaft, and is assembled with a third external thread (26) of the turbine rotor (9) through a fourth internal thread (22) of the motor shaft;
the transition shaft sleeve (5) is assembled with the connecting shaft sleeve through a second internal thread (19) of the transition shaft sleeve and assembled with the motor shaft through a second external thread (18) of the transition shaft sleeve;
the connecting shaft sleeve (4) is assembled with the compressor impeller through an inner cylindrical surface (15), assembled with the composite shaft sleeve through a second outer cylindrical surface (16) and assembled with the transition shaft sleeve through a first external thread (17);
the composite shaft sleeve (3) is assembled with the connecting shaft sleeve through the inner hole (14) and the end face thereof;
The compressor impeller (1) is assembled with the connecting shaft sleeve (4) through a first outer cylindrical surface (10), assembled with the turbine rotor through the unthreaded hole (30) and the first inner thread (12), and locked with the assembly structure of the turbine rotor (9) and the compressor impeller (1) through the matching of the first locking ring groove (11) and the elastic locking ring (2).
2. The integrated rotor structure of a radial flow turbine power generation system of claim 1, wherein: the rotating direction of a first internal thread (12) of the compressor impeller (1) is the same as the rotating direction of a rotor of the turbine power generation system during working.
3. The integrated rotor structure of a radial flow turbine power generation system of claim 1, wherein: the elastic locking ring (2) is arranged in the locking ring grooves of the turbine rotor (9) and the compressor impeller (1).
4. A process for manufacturing a radial flow turbine power generation system integrated rotor of a radial flow turbine power generation system integrated rotor structure according to claim 1, wherein: the method comprises the following steps:
a. determining the structural size parameters of the integrated rotor of the radial flow turbine power generation system;
b. determining the screw assembling and tightening torque of the integrated rotor structure;
c. manufacturing the integrated rotor component of the radial flow turbine power generation system;
d. Assembling a turbine end radial shaft sleeve assembly: assembling the radial shaft sleeve (7) on a third outer cylindrical surface (24) of the fixed shaft sleeve (8), and ensuring that the matching end surfaces are attached tightly to form a turbine end radial shaft sleeve assembly;
e. assembling a magnetic core of a motor shaft and a motor shaft sleeve;
f. assembling the turbine end radial shaft sleeve assembly, the motor shaft and the turbine rotor;
g. assembling the transition shaft sleeve and the motor shaft;
h. assembling the connecting shaft sleeve and the transition shaft sleeve;
i. assembling the composite shaft sleeve and the connecting shaft sleeve: the composite shaft sleeve (3) penetrates through the turbine rotor (9) and is assembled on a second outer cylindrical surface (16) of the connecting shaft sleeve (4), so that the composite shaft sleeve (3) is tightly attached to the matching end surface of the transition shaft sleeve (5);
j. and assembling the compressor impeller with the turbine rotor and the elastic locking ring.
5. The radial flow turbine power generation system integrated rotor manufacturing process of claim 4, wherein: and f, according to the screw assembling and screwing torque determined in the step b, assembling the radial shaft sleeve assembly of the turbine end formed in the step d and the motor shaft (6) formed in the step e on the turbine rotor (9) in sequence through screw screwing, and enabling the end surfaces to be attached to each other.
6. The radial flow turbine power generation system integrated rotor manufacturing process of claim 4, wherein: and g, penetrating the transition shaft sleeve (5) through the turbine rotor (9), assembling and screwing the torque according to the threads determined in the step b, and assembling the transition shaft sleeve (5) on the motor shaft (6) through screwing the threads so that the end surface of the transition shaft sleeve is attached to the magnetic core of the motor shaft.
7. The radial flow turbine power generation system integrated rotor manufacturing process of claim 4, wherein: and in the step h, the connecting shaft sleeve (4) penetrates through the turbine rotor (9), the screwing torque is assembled according to the threads determined in the step b, the connecting shaft sleeve (4) and the transition shaft sleeve (5) are assembled together through screwing of the threads, and the matching end faces of the connecting shaft sleeve (4) and the transition shaft sleeve (5) are ensured to be attached tightly.
8. The radial flow turbine power generation system integrated rotor manufacturing process of claim 4, wherein: in the step j, the elastic locking ring (2) is arranged in a second locking ring groove (27) of the turbine rotor (9), the compressor impeller (1) is assembled with the turbine rotor (9) and the elastic locking ring (2) together by screwing the compressor impeller (1) and a fourth external thread (28) of the turbine rotor (9) according to the thread assembling and screwing torque determined in the step b, and the elastic locking ring (2) is bounced into a first locking ring groove (11) of the compressor impeller (1) to realize the locking of the rotor structure.
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| CN201910647990.0A CN110344892B (en) | 2019-07-18 | 2019-07-18 | Radial flow turbine power generation system integrated rotor and manufacturing process thereof |
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| CN112350506B (en) * | 2020-10-26 | 2022-06-24 | 北京动力机械研究所 | High-speed large-torque motor rotor structure and process of thermoelectric conversion system |
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| JP2008121466A (en) * | 2006-11-09 | 2008-05-29 | Toyota Motor Corp | Motor-driven supercharger |
| JP2012139039A (en) * | 2010-12-27 | 2012-07-19 | Mitsubishi Heavy Ind Ltd | Electric generator and power generation facility |
| CN105637196A (en) * | 2013-10-25 | 2016-06-01 | 艾克莫特公司 | Retention of a rotor of an electronically-controlled turbomachine |
| CN106988784A (en) * | 2017-03-24 | 2017-07-28 | 中国北方发动机研究所(天津) | A kind of radial-flow type rotating shaft of supercharger turbine structure and its moulding process |
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| JP2008121466A (en) * | 2006-11-09 | 2008-05-29 | Toyota Motor Corp | Motor-driven supercharger |
| JP2012139039A (en) * | 2010-12-27 | 2012-07-19 | Mitsubishi Heavy Ind Ltd | Electric generator and power generation facility |
| CN105637196A (en) * | 2013-10-25 | 2016-06-01 | 艾克莫特公司 | Retention of a rotor of an electronically-controlled turbomachine |
| CN106988784A (en) * | 2017-03-24 | 2017-07-28 | 中国北方发动机研究所(天津) | A kind of radial-flow type rotating shaft of supercharger turbine structure and its moulding process |
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