CN110318814B - Closed-cycle turbine power generation system component test rotor and manufacturing method thereof - Google Patents
Closed-cycle turbine power generation system component test rotor and manufacturing method thereof Download PDFInfo
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- CN110318814B CN110318814B CN201910647946.XA CN201910647946A CN110318814B CN 110318814 B CN110318814 B CN 110318814B CN 201910647946 A CN201910647946 A CN 201910647946A CN 110318814 B CN110318814 B CN 110318814B
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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
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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
- F01D5/026—Shaft to shaft connections
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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
- 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)
- Manufacture Of Motors, Generators (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to a test rotor of a closed cycle turbine power generation system component and a manufacturing method thereof. Combining the part test requirements of the closed cycle turbine power generation system, on the basis of reasonably designing a rotor to form parts and completing manufacturing, firstly respectively assembling a motor shaft and a rotating shaft and a turbine impeller, secondly assembling a radial shaft sleeve, the motor shaft and the rotating shaft, then assembling a connecting shaft sleeve and the motor shaft and assembling a radial composite shaft sleeve and a connecting shaft sleeve, and finally assembling a compressor impeller and the connecting shaft sleeve as well as the rotating shaft and a locking nut. The rotor and the components thereof have good assembly and interchangeability, can realize the repeated assembly of different turbine impellers, compressor impellers and other components, and better meet the test verification requirements of the component test component of the closed-cycle turbine power generation system.
Description
Technical Field
The invention belongs to the technical field of closed circulation radial turbine power generation system tests, and particularly relates to a closed circulation turbine power generation system component test rotor and a manufacturing method 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. The typical closed-cycle radial-flow turbine power generation system mainly structurally comprises a radial-flow turbine, a radial-flow compressor, a motor, a heat regenerator and the like.
The rotor of the closed circulation radial flow turbine power generation system comprises a turbine, a gas compressor 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 of the rotors can reach more than one hundred thousands of revolutions per minute. Therefore, the reasonable design of the structure and the process of the rotor is very important for guaranteeing 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 is connected with the motor rotor through mechanical interference by means of the coupler, and 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 shaft coupling and a hub at one end of the motor shaft and the inlet end of the compressor impeller to form a complete rotor. The rotor of the existing closed-cycle turbine power generation system adopts an interference connection structure, although the coaxiality of each component 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 component, and a high requirement is provided for the processing precision of the assembly part of the component; in addition, the rotor is influenced by centrifugal load in the working process, interference magnitude of a connecting part is reduced in the working process, the connecting strength and rigidity of the rotor cannot be effectively guaranteed, and loose parts of the rotor are easy to generate, so that the working reliability of the closed circulation turbine power generation system is seriously influenced. In addition, such rotors require high machining quality and poor repeatable assembly.
In the development stage of the closed circulation radial flow turbine power generation system, the performance and reliability of components such as a turbine and a gas compressor need to be effectively verified, and the exchange and repeated assembly of different parts are difficult to realize by adopting the rotor structure of the conventional closed circulation radial flow turbine power generation system. Therefore, it is necessary to design and manufacture a rotor structure for a part test of a closed-cycle radial turbine power generation system aiming at the performance and reliability test verification requirements of key parts of the closed-cycle radial turbine power generation system.
Disclosure of Invention
The invention provides a test rotor of a closed cycle turbine power generation system component and a manufacturing method thereof, aiming at the test verification requirements of the rotor component of the closed cycle 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 assembly process parameters of a locking nut, a gas compressor impeller, a shaft-radial composite shaft sleeve, a connecting shaft sleeve, a motor shaft, a radial shaft sleeve, a rotating shaft and the turbine impeller are determined. On the basis of finishing the processing of rotor parts, firstly respectively assembling a motor shaft and a rotating shaft and a turbine impeller, secondly assembling a radial shaft sleeve, the motor shaft and the rotating shaft, then assembling a connecting shaft sleeve and the motor shaft and assembling a shaft radial composite shaft sleeve and the connecting shaft sleeve, and finally assembling a compressor impeller, the connecting shaft sleeve, the rotating shaft and a locking nut. The rotor component parts are in threaded connection, transition assembly and end face compression structures, repeated assembly of key parts such as a turbine impeller and a compressor impeller can be achieved, and component characteristic and structural reliability tests of different parts and parts with different sizes of the rotor of the closed circulation radial flow type turbine power generation system are facilitated.
The technical scheme of the invention is as follows:
a test rotor structure of a closed cycle turbine power generation system component comprises a locking nut, a compressor impeller, a shaft radial composite shaft sleeve, a connecting shaft sleeve, a motor shaft, a radial shaft sleeve, a rotating shaft and a turbine impeller. The rotation direction of the locking nut is opposite to the rotation direction of the turbine power generation system rotor during working; the compressor impeller is provided with a central through hole, and an outer cylindrical surface assembled with the connecting shaft sleeve is arranged on the compressor impeller; the axial and radial composite shaft sleeve is provided with an annular end face matched with the radial bearing, the axial and radial composite shaft sleeve is provided with an outer cylindrical face matched with the radial bearing, and the axial and radial composite shaft sleeve is assembled with the connecting shaft sleeve through an inner hole; the connecting shaft sleeve is sleeved with an outer cylindrical surface assembled with a shaft radial composite shaft sleeve, a through hole assembled with the rotating shaft is formed in the connecting shaft sleeve, an inner cylindrical surface assembled with the compressor impeller is formed at one end of the connecting shaft sleeve, and an external thread assembled with a motor shaft is formed at the other end of the connecting shaft sleeve; 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 connecting shaft sleeve, and the other end of the motor shaft is provided with an internal thread assembled with the external thread of the rotating shaft; the radial shaft sleeve is of a circular ring structure, an outer cylindrical surface of the radial shaft sleeve is matched with the radial bearing, and the radial shaft sleeve is assembled on the rotating shaft through an inner cylindrical surface; the rotating shaft is provided with an internal thread assembled with the turbine impeller, the rotating shaft is provided with an external cylindrical surface assembled with the radial shaft sleeve, the rotating shaft is provided with an external thread assembled with a motor shaft, the rotating shaft is provided with an optical axis assembled with the connecting shaft sleeve, the rotating shaft is provided with an optical axis assembled with the compressor impeller, the rotating shaft is provided with an external thread assembled with the locking nut, and one side of the rotating shaft, close to the turbine end, is provided with a weight-reducing blind hole; the turbine wheel is provided with an external thread assembled with the rotating shaft, the rotating direction of the external thread of the turbine wheel is the same as the rotating direction of the rotor of the turbine power generation system during working, and the exhaust end of the turbine wheel is provided with a clamping nut.
A method for manufacturing a closed cycle turbine power generation system component test rotor comprises the following steps:
a. determining the structural parameters of a test rotor of a closed-cycle turbine power generation system component: according to the size parameters of a turbine, a gas compressor and a motor of the closed-cycle turbine power generation system, determining the structural size parameters of rotor component parts, namely a locking nut, a gas compressor impeller, a shaft radial composite shaft sleeve, a connecting shaft sleeve, a motor shaft, a radial shaft sleeve, a rotating shaft and a turbine impeller;
b. determining the assembly process parameters of the part test rotor part of the closed cycle turbine power generation system: determining the screw thread assembling and screwing torque between parts of the rotor according to the working state parameters of the closed cycle turbine power generation system and the dynamic parameter requirements of the rotor;
c. manufacturing of a closed cycle turbine power generation system component test rotor component: b, processing a locking nut, a compressor impeller, a shaft radial composite shaft sleeve, a connecting shaft sleeve, a motor shaft, a radial shaft sleeve, a rotating shaft and a turbine impeller according to the structural size parameters of the rotor parts determined in the step a;
d. assembling a motor shaft: 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;
e. assembling the rotating shaft and the turbine impeller: b, according to the assembling and screwing torque determined in the step b, assembling the turbine impeller and the rotating shaft together through screwing and assembling of the rotating shaft and the turbine impeller through threads to form a turbine rotating shaft;
f. assembling a motor shaft, a radial shaft sleeve and a rotating shaft: firstly, assembling the radial shaft sleeve on the outer cylindrical surface of the rotating shaft and ensuring that the matched end surfaces are tightly attached, and then assembling the motor shaft on the rotating shaft by screwing through threads according to the assembling and screwing torque determined in the step b and ensuring that the end surfaces are tightly attached to each other;
g. assembling a connecting shaft sleeve, a motor shaft and a rotating shaft: firstly, the optical axis of the rotating shaft penetrates through the through hole of the connecting shaft sleeve, then the connecting shaft sleeve and the motor shaft are assembled together through screwing according to the assembling and screwing torque determined in the step b, and the end faces are tightly attached;
h. assembling the axial and radial composite shaft sleeve and the connecting shaft sleeve: assembling the axial and radial composite shaft sleeve on the outer cylindrical surface of the connecting shaft sleeve, and ensuring that the matching end surfaces are tightly attached;
i. assembling the compressor impeller, the connecting shaft sleeve, the rotating shaft and the locking nut: firstly, the optical axis of the rotating shaft penetrates through the through hole of the compressor impeller to ensure that the outer cylindrical surface of the compressor impeller and the inner cylindrical surface of the connecting shaft sleeve are assembled together, then the locking nut is installed on the rotating shaft, the compressor impeller, the connecting shaft sleeve, the rotating shaft and the locking nut are assembled together through thread screwing assembly according to the assembling and screwing torque determined in the step b, and a complete rotor structure is formed.
The beneficial effects of the invention are:
according to the part test rotor structure of the closed-cycle turbine power generation system and the manufacturing method thereof, the rotor component parts are in threaded connection, transition assembly and end face pressing structures, repeated assembly of key parts such as a turbine impeller and a gas compressor impeller can be achieved, and part characteristic and structural reliability tests of different parts and parts with different sizes of the rotor of the closed-cycle radial turbine power generation system can be conducted; the rotor adopts the coaxial structure of the same motor shaft of the rotating shaft of the turbine and the compressor, a coupler is not needed, the number of parts of the rotor and the structural size of the whole closed circulation radial flow turbine power generation system can be reduced, and the stability and the reliability of the operation of the rotor system can be improved.
Drawings
FIG. 1 is a schematic structural diagram of a test rotor of a component of a closed cycle turbine power generation system according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a compressor wheel according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of a composite shaft sleeve in the radial direction of the shaft according to the embodiment of the invention.
Fig. 4 is a schematic structural diagram of the connecting bushing according to the embodiment of the present invention.
Fig. 5 is a schematic structural diagram of a motor shaft according to an embodiment of the invention.
Fig. 6 is a schematic structural diagram of a radial sleeve according to an embodiment of the present invention.
Fig. 7 is a schematic view of a structure of the rotating shaft according to the embodiment of the invention.
Fig. 8 is a schematic view of a turbine wheel according to an embodiment of the present invention.
1 locking nut 2 compressor impeller 3 axial radial composite shaft sleeve 4 connecting shaft sleeve
5 outer cylindrical surface of motor shaft 6, radial shaft sleeve 7, rotating shaft 8, turbine impeller 9 and compressor impeller 9
10 compressor impeller through hole 11 axial radial composite shaft sleeve annular end face 12 axial radial composite shaft sleeve inner hole
13 outer cylindrical surface 14 of axial and radial composite shaft sleeve is connected with inner cylindrical surface of shaft sleeve assembled with compressor impeller
15 outer cylindrical surface 16 of connecting shaft sleeve, external thread 17 of connecting shaft sleeve and through hole of connecting shaft sleeve
18 motor shaft magnetic core 19 motor shaft axle sleeve 20 motor shaft and connecting axle sleeve mutually assembled internal thread
21 inner cylindrical surface of internal thread 22 radial shaft sleeve of motor shaft matched with external thread of rotating shaft
Optical axis assembled with compressor impeller on 23 rotating shaft and locking nut assembling internal thread 24 rotating shaft
25 optical axis assembled with the connecting shaft sleeve on the rotating shaft, 26 external threads assembled with the motor shaft on the rotating shaft
27 outer cylindrical surface assembled with radial shaft sleeve on rotating shaft
28 weight-reducing blind hole of rotating shaft 29 and internal thread assembled with turbine impeller on rotating shaft
30 external thread of turbine wheel 31 clamping nut of turbine wheel
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.
A test rotor structure of a closed cycle turbine power generation system component comprises a locking nut 1, a compressor impeller 2, a shaft radial composite shaft sleeve 3, a connecting shaft sleeve 4, a motor shaft 5, a radial shaft sleeve 6, a rotating shaft 7 and a turbine impeller 8. The rotating direction of the locking nut 1 is opposite to the rotating direction of a rotor of the turbine power generation system during working; the compressor impeller 2 is provided with a central through hole 10, and an outer cylindrical surface 9 assembled with the connecting shaft sleeve is arranged on the compressor impeller 2; the composite shaft sleeve 3 is provided with an annular end face 11 matched with a radial bearing, the composite shaft sleeve 3 is provided with an outer cylindrical face 13 matched with the radial bearing, and the composite shaft sleeve 3 is assembled with the connecting shaft sleeve 4 through an inner hole 12; the connecting shaft sleeve 4 is provided with an outer cylindrical surface 15 assembled with the axial and radial composite shaft sleeve 3, a through hole 17 assembled with a rotating shaft is formed in the connecting shaft sleeve 4, an inner cylindrical surface 14 assembled with a compressor impeller is formed at one end of the connecting shaft sleeve 4, and an external thread 16 assembled with a motor shaft is formed at the other end of the connecting shaft sleeve 4; the motor shaft 5 consists of a magnetic core 18 and a motor shaft sleeve 19, the magnetic core 18 of the motor shaft 5 is positioned in the motor shaft sleeve 19, one end of the motor shaft 5 is provided with an internal thread 20 assembled with the connecting shaft sleeve, and the other end of the motor shaft 5 is provided with an internal thread 21 assembled with the external thread of the rotating shaft; the radial shaft sleeve 6 is of a circular ring structure, the outer cylindrical surface of the radial shaft sleeve 6 is matched with a radial bearing, and the radial shaft sleeve 6 is assembled on the rotating shaft through the inner cylindrical surface 22; the rotating shaft 7 is provided with an internal thread 29 assembled with a turbine impeller, the rotating shaft 7 is provided with an outer cylindrical surface 27 assembled with a radial shaft sleeve, the rotating shaft 7 is provided with an external thread 26 assembled with a motor shaft, the rotating shaft 7 is provided with an optical axis 25 assembled with a connecting shaft sleeve, the rotating shaft 7 is provided with an optical axis 24 assembled with a compressor impeller, the rotating shaft 7 is provided with an external thread 23 assembled with a locking nut 1, and one side of the rotating shaft 7 close to the turbine end is provided with a weight-reducing blind hole 28; the turbine impeller 8 is provided with an external thread 30 assembled with the rotating shaft, the rotating direction of the external thread 30 of the turbine impeller 8 is the same as the rotating direction of the rotor of the turbine power generation system during working, and the exhaust end of the turbine impeller 8 is provided with a clamping nut 31.
A method for manufacturing a closed cycle turbine power generation system component test rotor comprises the following steps:
a. determining the structural parameters of a test rotor of a closed-cycle turbine power generation system component: according to the size parameters of a turbine, a gas compressor and a motor of the closed-cycle turbine power generation system, determining the structural size parameters of rotor component parts, namely a locking nut, a gas compressor impeller, a shaft radial composite shaft sleeve, a connecting shaft sleeve, a motor shaft, a radial shaft sleeve, a rotating shaft and a turbine impeller;
the diameter of a turbine impeller, the diameter of a compressor impeller and the diameter of a motor shaft of a certain type of closed cycle turbine power generation system of the embodiment are respectively phi 90mm, phi 96mm and phi 38mm, the rotating direction of a rotor of the turbine power generation system in working is dextrorotation, 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 outer cylindrical surface of a compressor impeller 2 is phi 20mm, the diameter of a through hole 10 is phi 10mm, the diameter of an inner cylindrical surface 12 of a shaft radial composite shaft sleeve 3 is phi 28mm, the size of an inner cylindrical surface 14 of a connecting shaft sleeve 4 is phi 20mm, the size of an outer cylindrical surface 15 is phi 28mm, the size of the through hole is phi 12mm, the size of an external thread 16 is M36 x 1, the size of an internal thread 20 of a motor shaft 5 is M36 x 1, the size of an internal thread 21 is M20, the size of an inner cylindrical surface 22 of a radial shaft sleeve 6 is phi 28mm, the size of the internal thread 29 of the rotating shaft 7 is determined to be M20 multiplied by 1, the size of the external thread 26 is determined to be M20 multiplied by 1, the size of the external thread 23 is determined to be M12 multiplied by 1, the size of the optical axis 24 is determined to be phi 10mm, and the size of the optical axis 25 is determined to be phi 12 mm.
b. Determining the assembly process parameters of the test rotor parts of the closed cycle turbine power generation system: determining the screw thread assembling and screwing torque between parts of the rotor according to the working state parameters of the closed cycle turbine power generation system and the dynamic parameter requirements of the rotor;
c. manufacturing of a closed cycle turbine power generation system component test rotor component: b, processing a locking nut, a compressor impeller, a shaft radial composite shaft sleeve, a connecting shaft sleeve, a motor shaft, a radial shaft sleeve, a rotating shaft and a turbine impeller according to the structural size parameters of the rotor parts determined in the step a;
d. assembling a motor shaft: c, adopting a mode of heating the motor shaft sleeve 19 of the motor shaft magnetic core 18 and the motor shaft sleeve 19 which are processed in the step c to realize interference assembly of the motor shaft magnetic core 18 and the motor shaft sleeve 19, and enabling one end of the motor shaft magnetic core 18 to be tightly attached to the inner end face of the shaft sleeve 19 to form a complete motor shaft 5;
e. assembling the rotating shaft and the turbine impeller: b, according to the assembling and screwing torque determined in the step b, assembling the turbine impeller 8 and the rotating shaft 7 together through screwing and assembling the rotating shaft 7 and the turbine impeller 8 by threads to form a turbine rotating shaft;
f. assembling a motor shaft, a radial shaft sleeve and a rotating shaft: firstly, assembling the radial shaft sleeve 6 on the outer cylindrical surface 27 of the rotating shaft and ensuring that the matched end surfaces are tightly attached, and then assembling the motor shaft 5 on the rotating shaft 7 by screwing through threads according to the assembling and screwing torque determined in the step b and ensuring that the end surfaces are tightly attached to each other;
g. assembling a connecting shaft sleeve, a motor shaft and a rotating shaft: firstly, the optical axis 25 of the rotating shaft 7 penetrates through the through hole 17 of the connecting shaft sleeve 4, then the connecting shaft sleeve 4 and the motor shaft 5 are assembled together by screwing through threads according to the assembling and screwing torque determined in the step b, and the end faces are attached tightly;
h. assembling the axial and radial composite shaft sleeve and the connecting shaft sleeve: assembling the axial and radial composite shaft sleeve 3 on the outer cylindrical surface 15 of the connecting shaft sleeve 4, and ensuring that the matching end surfaces are tightly attached;
i. assembling the compressor impeller, the connecting shaft sleeve, the rotating shaft and the locking nut: firstly, the optical axis 24 of the rotating shaft 7 penetrates through the through hole 10 of the compressor impeller 2 to ensure that the outer cylindrical surface 9 of the compressor impeller 2 is assembled with the inner cylindrical surface 14 of the connecting shaft sleeve 4, then the locking nut 1 is installed on the rotating shaft 7, and the compressor impeller 2, the connecting shaft sleeve 4, the rotating shaft 7 and the locking nut 1 are assembled together through threaded screwing assembly according to the assembling and screwing torque determined in the step b to form a complete 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 (4)
1. The utility model provides a closed cycle turbine power generation system part test rotor structure which characterized in that: the method comprises the following steps: the device comprises a locking nut (1), a compressor impeller (2), a shaft radial composite shaft sleeve (3), a connecting shaft sleeve (4), a motor shaft (5), a radial shaft sleeve (6), a rotating shaft (7) and a turbine impeller (8);
the rotating direction of the locking nut (1) is opposite to the rotating direction of a rotor of the turbine power generation system during working;
the compressor impeller (2) is provided with a central through hole (10), and an outer cylindrical surface (9) assembled with the connecting shaft sleeve is arranged on the compressor impeller (2);
the composite shaft sleeve (3) is provided with an annular end face (11) matched with a radial bearing, the composite shaft sleeve (3) is provided with an outer cylindrical face (13) matched with the radial bearing, and the composite shaft sleeve (3) is assembled with the connecting shaft sleeve (4) through an inner hole (12);
the connecting shaft sleeve (4) is provided with an outer cylindrical surface (15) assembled with the axial and radial composite shaft sleeve (3), a through hole (17) assembled with a rotating shaft is formed in the connecting shaft sleeve (4), an inner cylindrical surface (14) assembled with a compressor impeller is arranged at one end of the connecting shaft sleeve (4), and an external thread (16) assembled with a motor shaft is arranged at the other end of the connecting shaft sleeve (4);
the motor shaft (5) consists of a magnetic core (18) and a motor shaft sleeve (19), the magnetic core (18) of the motor shaft (5) is positioned inside the motor shaft sleeve (19), one end of the motor shaft (5) is provided with an internal thread (20) assembled with the connecting shaft sleeve, and the other end of the motor shaft (5) is provided with an internal thread (21) assembled with the external thread of the rotating shaft;
the radial shaft sleeve (6) is of a circular structure, the outer cylindrical surface of the radial shaft sleeve (6) is matched with a radial bearing, and the radial shaft sleeve (6) is assembled on the rotating shaft through the inner cylindrical surface (22);
the rotating shaft (7) is provided with an internal thread (29) assembled with a turbine impeller, the rotating shaft (7) is provided with an outer cylindrical surface (27) assembled with a radial shaft sleeve, the rotating shaft (7) is provided with an external thread (26) assembled with a motor shaft, the rotating shaft (7) is provided with an optical axis (25) assembled with a connecting shaft sleeve, the rotating shaft (7) is provided with an optical axis (24) assembled with a compressor impeller, the rotating shaft (7) is provided with an external thread (23) assembled with a locking nut (1), and one side of the rotating shaft (7) close to the turbine end is provided with a weight-reducing blind hole (28);
the turbine power generation system is characterized in that the turbine impeller (8) is provided with an external thread (30) assembled with the rotating shaft, the rotating direction of the external thread (30) of the turbine impeller (8) is the same as the rotating direction of the rotor of the turbine power generation system during working, and the exhaust end of the turbine impeller (8) is provided with a clamping nut (31).
2. A method of manufacturing a closed-cycle turbine power generation system component test rotor for a closed-cycle turbine power generation system component test rotor structure according to claim 1, characterized in that: the method comprises the following steps:
a. determining structural parameters of a test rotor of a closed cycle turbine power generation system component;
b. determining the assembly process parameters of the part test rotor parts of the closed cycle turbine power generation system;
c. manufacturing a part test rotor part of the closed cycle turbine power generation system;
d. assembling a motor shaft: c, the motor shaft magnetic core (18) and the motor shaft sleeve (19) which are processed in the step c are subjected to interference assembly by adopting a mode of heating the motor shaft sleeve (19), so that one end of the motor shaft magnetic core (18) is tightly attached to the inner end face of the motor shaft sleeve (19) to form a complete motor shaft (5);
e. assembling the rotating shaft and the turbine impeller: b, according to the assembling tightening torque determined in the step b, assembling the turbine impeller (8) and the rotating shaft (7) together through screwing and assembling the rotating shaft (7) and the turbine impeller (8) by threads to form a turbine rotating shaft;
f. assembling a motor shaft, a radial shaft sleeve and a rotating shaft: firstly, assembling a radial shaft sleeve (6) on an outer cylindrical surface (27) of a rotating shaft and ensuring that the matched end surfaces are tightly attached, and then assembling and screwing the motor shaft (5) on the rotating shaft (7) through screwing according to the assembling and screwing torque determined in the step b and enabling the end surfaces to be tightly attached to each other;
g. assembling the connecting shaft sleeve, the motor shaft and the rotating shaft;
h. assembling the axial and radial composite shaft sleeve and the connecting shaft sleeve: assembling the axial and radial composite shaft sleeve (3) on an outer cylindrical surface (15) of the connecting shaft sleeve (4) and ensuring that the matching end surfaces are tightly attached;
i. assembling the compressor impeller, the connecting shaft sleeve, the rotating shaft and the locking nut.
3. The method of manufacturing a closed cycle turbine power generation system component test rotor of claim 2, wherein: in the step g, firstly, the optical axis (25) of the rotating shaft (7) penetrates through the through hole (17) of the connecting shaft sleeve (4), then the connecting shaft sleeve (4) and the motor shaft (5) are assembled together through screwing according to the assembling and screwing torque determined in the step b, and the end faces are attached tightly.
4. The method of manufacturing a closed cycle turbine power generation system component test rotor of claim 2, wherein: in the step i, firstly, an optical axis (24) of the rotating shaft (7) penetrates through a through hole (10) of the compressor impeller (2) to ensure that an outer cylindrical surface (9) of the compressor impeller (2) is assembled with an inner cylindrical surface (14) of the connecting shaft sleeve (4), then the locking nut (1) is installed on the rotating shaft (7), and the compressor impeller (2), the connecting shaft sleeve (4), the rotating shaft (7) and the locking nut (1) are assembled together through thread screwing assembly according to the assembling and screwing moment determined in the step b to form a complete rotor structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910647946.XA CN110318814B (en) | 2019-07-18 | 2019-07-18 | Closed-cycle turbine power generation system component test rotor and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910647946.XA CN110318814B (en) | 2019-07-18 | 2019-07-18 | Closed-cycle turbine power generation system component test rotor and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110318814A CN110318814A (en) | 2019-10-11 |
| CN110318814B true CN110318814B (en) | 2022-07-12 |
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