CN108678813B - Pull rod rotor with self-locking nut device - Google Patents
Pull rod rotor with self-locking nut device Download PDFInfo
- Publication number
- CN108678813B CN108678813B CN201810673465.1A CN201810673465A CN108678813B CN 108678813 B CN108678813 B CN 108678813B CN 201810673465 A CN201810673465 A CN 201810673465A CN 108678813 B CN108678813 B CN 108678813B
- Authority
- CN
- China
- Prior art keywords
- self
- locking nut
- pull rod
- lock cap
- annular groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- 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
- F01D5/06—Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections
- F01D5/066—Connecting means for joining rotor-discs or rotor-elements together, e.g. by a central bolt, by clamps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A pull rod rotor with a self-locking nut device belongs to the technical field of gas turbines. The invention aims to solve the problems of large axial and radial temperature gradients of the rotor of the heavy-duty gas turbine and different high temperature resistance and strength characteristics of each stage of the compressor and the turbine. The invention comprises a front end shaft, a self-locking nut, a pull rod, an impeller, a lock cap, a pressure plate and a rear end shaft, wherein the front end shaft is a cylindrical body, an annular groove is formed in the side surface of the cylindrical body, the self-locking nut is arranged in the annular groove, a hollow hole is formed in the front end shaft, one end of the pull rod penetrates through the hollow hole to be installed with the self-locking nut, the impeller is penetrated in the central position of the pull rod, the other end of the pull rod penetrates into a lock cap mounting hole of the pressure plate, a lock cap is arranged in the lock cap mounting hole, and the lock cap is in threaded connection with the right end of the pull rod. The pull rod rotor with the self-locking nut device has the advantages of simple structure, low processing cost, convenient assembly, high safety and reliability under the working conditions of high speed, heavy load and the like.
Description
Technical Field
The invention relates to a rotor structure of a gas turbine, and belongs to the technical field of gas turbines.
Background
The heavy-duty gas turbine is clean and high-clean power generation equipment, wherein the rotor is the most main core component, the design difficulty of the rotor is extremely high because the rotor works in high-temperature, high-pressure, high-rotating speed and heavy-load environments, the design and manufacture of the rotor of the heavy-duty gas turbine are in a starting stage at present, few developed countries are in monopoly state for the technology, the axial and radial temperature gradients of the rotor of the heavy-duty gas turbine are large, the high-temperature resistance and the strength characteristics of a compressor and each stage of a turbine are different, and the pull rod rotor can well meet the requirements.
Disclosure of Invention
The invention aims to solve the technical problems and further provides a pull rod rotor with a self-locking nut device.
The technical scheme of the invention is as follows:
the utility model provides a pull rod rotor with self-locking nut device includes front end axle, self-locking nut, pull rod, impeller, lock cap, pressure disk and rear end axle, front end axle be the cylindric body, processing has round annular groove on the side of cylindric body, the annular groove divide into front end axle left end portion and front end axle right-hand member portion with the front end axle, the bottom surface of annular groove is front end axle medial surface, the annular terminal surface of front end axle right-hand member portion on process have the hollow hole, self-locking nut on process and have the pull rod hole, the rear end axle set up in the right side central point of pressure disk, processing has the lock cap mounting hole on the pressure disk, the annular groove in install a plurality of self-locking nuts, the left and right both ends of pull rod have the external screw thread respectively, the left end of pull rod passes hollow hole and self-locking nut's pull rod hole spiro union, the intermediate position of pull rod wears to be equipped with a plurality of impellers, the right-hand member of pull rod penetrates to the lock cap mounting hole, is equipped with the lock cap in the lock cap mounting hole, the right-hand member of lock cap and pull rod.
Further, the cross section of the self-locking nut is fan-shaped, a protruding part is arranged at the center position of the inner cambered surface of the self-locking nut, a plurality of inner grooves are formed in the inner side surface of the front end shaft, and the protruding part arranged at the center position of the inner cambered surface of the self-locking nut is matched with the inner grooves to realize the axial positioning of the self-locking nut on the front end shaft.
Further, the curvature radius of the inner cambered surface of the self-locking nut is consistent with the curvature radius of the inner side surface of the front end shaft of the annular groove.
Further, balance holes are formed in two sides of the pull rod hole of the self-locking nut.
The invention has the following beneficial effects: the pull rod rotor with the self-locking nut device is simple in structure, low in processing cost, convenient to assemble, high in safety and reliability under working conditions of high speed, heavy load and the like, and in addition, dynamic balance of the rotor can be adjusted through the arranged balance holes.
Drawings
FIG. 1 is a structural mounting arrangement of the present invention;
FIG. 2 is a front elevational view of the front end shaft;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a structural mounting relationship diagram of the self-locking nut and the front end shaft;
FIG. 5 is a structural view of the self-locking nut;
FIG. 6 is a front view of the tie rod;
in the drawing, a front end shaft, a 2-self-locking nut, a 3-pull rod, a 4-impeller, a 5-lock cap, a 6-pressure plate, a 7-rear end shaft, an 8-annular groove, a 9-front end shaft left end part, a 10-front end shaft right end part, an 11-front end shaft inner side surface, a 12-hollow hole, a 13-pull rod hole, a 14-lock cap mounting hole, a 15-protruding part, a 16-inner groove and a 17-balance hole are formed.
Detailed Description
The first embodiment is as follows: referring to fig. 1 to 5, a pull rod rotor with a self-locking nut device of this embodiment includes a front end shaft 1, a self-locking nut 2, a pull rod 3, an impeller 4, a lock cap 5, a pressure plate 6 and a rear end shaft 7, the front end shaft 1 is a cylindrical body, a round of annular groove 8 is machined on the side surface of the cylindrical body, the front end shaft 1 is divided into a front end shaft left end portion 9 and a front end shaft right end portion 10 by the annular groove 8, the bottom surface of the annular groove 8 is a front end shaft inner side surface 11, a hollow hole 12 is machined on the annular end surface of the front end shaft right end portion 10, a pull rod hole 13 is machined on the self-locking nut 2, the rear end shaft 7 is arranged at the center position on the right side of the pressure plate 6, a lock cap mounting hole 14 is machined on the pressure plate 6, a plurality of self-locking nuts 2 are mounted in the annular groove 8, the left end and right ends of the pull rod 3 are respectively machined with external threads, the left end of the pull rod 3 passes through the hollow hole 12 and the pull rod hole 13 of the self-locking nut 2, the middle position of the pressure plate 3 is threaded, a plurality of impeller caps 4 are mounted on the pressure plate 3, and the lock cap 5 is mounted on the pressure plate 5, and the lock cap mounting hole 14 is mounted on the pressure plate 5.
Working principle: the pull rod rotor with the self-locking nut device is shown in figure 1, and mainly comprises a front end shaft 1, a self-locking nut 2, a pull rod 2, impellers 4 at all levels, a lock cap 5, a pressure plate 6, a rear end shaft 7 and the like;
the specific structure of the front end shaft 1 is shown in fig. 2, a hollow hole 12 is formed at the right end part 10 of the front end shaft 1 and is used for realizing clearance fit with the pull rod 3, a plurality of inner grooves 16 with equal uniformity are axially processed on the inner side surface 11 of the front end shaft at the middle part of the front end shaft 1, and the inner grooves 16 are used for realizing positioning fit with the self-locking nut 2;
the specific structure of the self-locking nut is shown in fig. 4 and 5, the shape of the self-locking nut 2 is a fan-shaped structure, a bulge 15 is arranged in the middle of the inner arc of the self-locking nut 2 and is used for realizing positioning fit with a front end shaft inner groove 16, the curvature radius of the inner arc surface of the self-locking nut 2 is consistent with that of the front end shaft, and the surface-surface fit of the inner arc surface of the self-locking nut 2 and the front end shaft is ensured;
the self-locking nuts comprise pull rod holes 13 which are used for being in threaded fit with the pull rods, in addition, two ends of each self-locking nut are provided with a balance hole 17 which is used for realizing dynamic balance of an adjusting rotor, wherein the balance holes 17 are formed by grinding, cutting, drilling and the like, the balance holes 17 have a weight reduction function, dynamic balance adjustment is realized, the self-locking nuts 2 are matched with the outer surface of a front end shaft through inner arc surfaces, radial positioning is realized, the self-locking nuts 2 are axially positioned with the grooves through grooves, a circle is formed by circumferentially arranging a plurality of self-locking nuts 2, and as the self-locking nuts are matched with the front end shaft, a certain clearance error is allowed to exist between the two ends of each self-locking nut and the front end shaft through threaded connection with the pull rods.
The installation mode of the invention is as follows: firstly, the front end shaft 1 is vertically placed, then the self-locking nuts 2 are matched, installed and positioned in the annular groove 8 of the front end shaft 1 (a plurality of self-locking nuts are filled in the circle of the front end shaft), then each self-locking nut 2 is in threaded fit with the end part of the pull rod 3, then each stage of impellers 4 are respectively penetrated and installed on the pull rod 3, finally, the pressure plate is installed on the pull rod 3, and the impellers 4 are fastened and installed by using the lock caps.
The second embodiment is as follows: referring to fig. 1 to 5, a description is given of the present embodiment, in which the cross section of the self-locking nut 2 is fan-shaped, the center position of the intrados of the self-locking nut 2 has a protruding portion 15, the inner side 11 of the front end shaft is processed with a plurality of inner grooves 16, and the protruding portion 15 at the center position of the intrados of the self-locking nut 2 is mounted in cooperation with the inner grooves 16, so as to realize the axial positioning of the self-locking nut 2 on the front end shaft 1.
And a third specific embodiment: the present embodiment will be described with reference to fig. 1 to 5, in which the radius of curvature of the intrados of the self-locking nut 2 is equal to the radius of curvature of the front-end-shaft inner surface 11 of the annular groove 8.
The specific embodiment IV is as follows: the present embodiment will be described with reference to fig. 1 to 5, in which a self-locking nut device is provided, and balance holes 17 are formed on both sides of a pull rod hole 13 of a self-locking nut 2.
The present embodiment is only exemplary of the present patent, and does not limit the scope of protection thereof, and those skilled in the art may also change the part thereof, so long as the spirit of the present patent is not exceeded, and the present patent is within the scope of protection thereof.
Claims (4)
1. A pull rod rotor with self-locking nut device, characterized in that: including front end axle (1), self-locking nut (2), pull rod (3), impeller (4), lock cap (5), pressure disk (6) and rear end axle (7), front end axle (1) be cylindrical body, processing has round annular groove (8) on the side of cylindrical body, annular groove (8) divide into front end axle left end portion (9) and front end axle right-hand member portion (10) with front end axle (1), the bottom surface of annular groove (8) is front end axle medial surface (11), the annular terminal surface of front end axle right-hand member portion (10) on process have hollow hole (12), self-locking nut (2) on process have pull rod hole (13), rear end axle (7) set up in the right side central point of pressure disk (6) put, processing has lock cap mounting hole (14) on pressure disk (6), annular groove (8) in install a plurality of self-locking nut (2), the left and right ends of pull rod (3) are processed respectively and have external screw thread, the left end of pull rod (3) passes hollow hole (12) and the ring end of pressure disk (4) and the right end cap (14) of push rod (3) are equipped with lock cap mounting hole (14) of self-locking nut (4), the lock cap (5) is in threaded connection with the right end of the pull rod (3).
2. A pull rod rotor with self-locking nut assembly as recited in claim 1, wherein: the cross section of the self-locking nut (2) is fan-shaped, a protruding part (15) is arranged at the center position of the inner cambered surface of the self-locking nut (2), a plurality of inner grooves (16) are formed in the inner side surface (11) of the front end shaft, the protruding part (15) arranged at the center position of the inner cambered surface of the self-locking nut (2) is matched with the inner grooves (16), and the axial positioning of the self-locking nut (2) on the front end shaft (1) is realized.
3. A pull rod rotor with self-locking nut assembly as recited in claim 1, wherein: the curvature radius of the inner cambered surface of the self-locking nut (2) is consistent with the curvature radius of the inner side surface (11) of the front end shaft of the annular groove (8).
4. A pull rod rotor with self-locking nut assembly as recited in claim 1, wherein: balance holes (17) are formed in two sides of the pull rod hole (13) of the self-locking nut (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810673465.1A CN108678813B (en) | 2018-06-26 | 2018-06-26 | Pull rod rotor with self-locking nut device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810673465.1A CN108678813B (en) | 2018-06-26 | 2018-06-26 | Pull rod rotor with self-locking nut device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108678813A CN108678813A (en) | 2018-10-19 |
| CN108678813B true CN108678813B (en) | 2024-01-09 |
Family
ID=63812146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810673465.1A Active CN108678813B (en) | 2018-06-26 | 2018-06-26 | Pull rod rotor with self-locking nut device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108678813B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109113795A (en) * | 2018-10-23 | 2019-01-01 | 中国船舶重工集团公司第七0三研究所 | A kind of helium turbine rotor leaf dish |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5537814A (en) * | 1994-09-28 | 1996-07-23 | General Electric Company | High pressure gas generator rotor tie rod system for gas turbine engine |
| CN204041531U (en) * | 2014-09-04 | 2014-12-24 | 长沙赛尔透平机械有限公司 | The connecting structure of centrifugal compressor high speed gear shaft and impeller |
| CN107269316A (en) * | 2017-08-17 | 2017-10-20 | 中南大学 | A kind of disc of conical profile structure of gas turbine central draw bar type rotor |
| CN107906045A (en) * | 2017-12-15 | 2018-04-13 | 南通大通宝富风机有限公司 | A kind of monopole centrifugal blower rotor |
| CN208330467U (en) * | 2018-06-26 | 2019-01-04 | 哈尔滨电气股份有限公司 | A kind of rod fastening rotor with self-locking nut device |
-
2018
- 2018-06-26 CN CN201810673465.1A patent/CN108678813B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5537814A (en) * | 1994-09-28 | 1996-07-23 | General Electric Company | High pressure gas generator rotor tie rod system for gas turbine engine |
| CN204041531U (en) * | 2014-09-04 | 2014-12-24 | 长沙赛尔透平机械有限公司 | The connecting structure of centrifugal compressor high speed gear shaft and impeller |
| CN107269316A (en) * | 2017-08-17 | 2017-10-20 | 中南大学 | A kind of disc of conical profile structure of gas turbine central draw bar type rotor |
| CN107906045A (en) * | 2017-12-15 | 2018-04-13 | 南通大通宝富风机有限公司 | A kind of monopole centrifugal blower rotor |
| CN208330467U (en) * | 2018-06-26 | 2019-01-04 | 哈尔滨电气股份有限公司 | A kind of rod fastening rotor with self-locking nut device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108678813A (en) | 2018-10-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101986444B1 (en) | Bearing support apparatus and method for a wind power generator assembly, and wind power generator assembly | |
| CN108678813B (en) | Pull rod rotor with self-locking nut device | |
| CN103532269A (en) | Aviation high-speed generator rotor structure | |
| CN106567598A (en) | Electric pole assembly capable of being dismounted rapidly and assembling method thereof | |
| CN105317633B (en) | The adjustment structure of support and axially mounted clearance that wind driven generation set main shaft is held | |
| CN110332019B (en) | Built-in locking gas floating rotor of closed circulation turbine power generation system | |
| CN209184392U (en) | Electric spindle and motor | |
| CN208330467U (en) | A kind of rod fastening rotor with self-locking nut device | |
| CN103410770B (en) | Axial force magnetic force self balancing device | |
| CN215333969U (en) | Special bearing for shield hob | |
| CN211493528U (en) | Integrated axle hub bearing nut locking device | |
| CN208831397U (en) | A kind of main shaft lock construction of wind power generating set | |
| CN209959682U (en) | Anti-loosening shaft sleeve nut | |
| CN220185378U (en) | Multistage centrifugal pump | |
| CN105889125B (en) | A kind of compressor rotor | |
| CN219197942U (en) | Output shaft flange with positioning and assembling structure | |
| CN112448354B (en) | Rotary suspension clamp | |
| CN218266767U (en) | Assembled multi-section crankshaft | |
| CN219262454U (en) | End face tooth connection structure between high-speed impeller and main shaft | |
| CN217401406U (en) | Nut | |
| CN204517312U (en) | Wind power generation penetration pipe structure | |
| CN217115768U (en) | Stable motor rotating shaft for air conditioner fan | |
| CN216950711U (en) | Mounting structure of wind turbine wind wheel blade and bearing | |
| CN113090650B (en) | Bearing special for shield hob | |
| CN219673226U (en) | Tandem conical gear with tandem aggregate structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |