CN115419474A - Integrated high-speed ball bearing integrated structure of integral type - Google Patents
Integrated high-speed ball bearing integrated structure of integral type Download PDFInfo
- Publication number
- CN115419474A CN115419474A CN202210905560.6A CN202210905560A CN115419474A CN 115419474 A CN115419474 A CN 115419474A CN 202210905560 A CN202210905560 A CN 202210905560A CN 115419474 A CN115419474 A CN 115419474A
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- ball bearing
- speed ball
- integrated
- integrated high
- rotating shaft
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Classifications
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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
- F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
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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
- F01D25/08—Cooling; Heating; Heat-insulation
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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
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
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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
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
Abstract
The invention provides an integrated high-speed ball bearing integrated structure, which comprises a turbine rotating shaft, a heat shield, an integrated high-speed ball bearing, an intermediate body and an oil sealing cover, wherein the turbine rotating shaft is connected with the heat shield through a bearing; the heat shield is arranged on the turbine rotating shaft, and a sealing structure is formed by the heat shield and the turbine rotating shaft; the intermediate body is arranged on the heat shield, and the integrated high-speed ball bearing is arranged on the turbine rotating shaft; the intermediate bodies are arranged on two sides of the integrated high-speed ball bearing; the oil seal cover is arranged on the turbine rotating shaft through the pressure end rotor part. According to the integrated structure of the integrated high-speed ball bearing, the integrated tool can be better designed to ensure the integration of the integrated high-speed ball bearing, and the visual integration and the easier assembly of the integrated high-speed ball bearing are realized.
Description
Technical Field
The invention belongs to the technical field of exhaust gas turbocharging, and particularly relates to an integrated high-speed ball bearing integrated structure.
Background
The turbocharging technology is an effective means for improving power output, reducing oil consumption and emission of the diesel engine, and is one of key technologies of the diesel engine. The military armored vehicle in China is powered by a supercharged diesel engine. With the continuous development of military armored vehicle power technology, higher requirements are put on the performance of the turbocharger, wherein the most important is the overall efficiency of the turbocharger, and the overall efficiency has important influence on matching performance, particularly dynamic performance, economical efficiency and acceleration performance. It is known that the overall efficiency of a turbocharger is composed of three parts, the overall efficiency of the turbocharger
Equal to the total efficiency of the turbine
Total efficiency of the compressor
And mechanical efficiency of bearing part
The product of the three, that is, η TC = η T η C η m, shows that three aspects must be used to improve the overall efficiency of the supercharger. Especially, the mechanical efficiency etam of the bearing part is improved, and the bearing has larger potential.
To increase the mechanical efficiency of the turbocharger bearing section requires the use of a more mechanically efficient bearing. The mechanical efficiency of the turbocharger is about 90% under the condition of adopting a floating bearing at present, and the improvement of the total efficiency is greatly restricted. In contrast, in the case of the ball bearing, the mechanical efficiency is improved by almost 20% in the low speed region as compared with the sliding bearing, and the effects are almost the same in the high speed region. Advantages of ball bearings: the friction resistance of the ball bearing is small; (2) power consumption is small; (3) easy start-up; and (4) the acceleration response performance of the ball bearing is better. Because of the advantages of ball bearings, high speed ball bearing applications are of great interest for improving turbocharger performance. The dynamic property and the economical efficiency of the military vehicle can be improved. However, in the ball bearing integration application, the dynamic stability of the turbine rotor can be ensured only by the interference integration of the ball bearing and the turbine rotating shaft, so that how to solve the problem that the integrated high-speed ball bearing is easy to integrate and assemble becomes a key technology.
Disclosure of Invention
In view of this, the present invention is directed to provide an integrated high-speed ball bearing integrated structure, so as to solve the problem that the conventional integrated high-speed ball bearing integrated structure is not easy to assemble.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the integrated high-speed ball bearing integrated structure comprises a turbine rotating shaft, a heat shield, an integrated high-speed ball bearing, an intermediate body and an oil sealing cover; the heat shield is arranged on the turbine rotating shaft, the intermediate body is arranged on the heat shield, and the integrated high-speed ball bearing is arranged on the turbine rotating shaft;
the intermediate bodies are arranged on two sides of the integrated high-speed ball bearing;
the oil seal cover is arranged on the turbine rotating shaft through the pressure end rotor part.
Furthermore, a through hole is formed in the middle of the heat shield, an internal thread is formed in the through hole of the heat shield, an external thread corresponding to the internal thread is formed in the rod portion of the turbine rotating shaft, the heat shield and the turbine rotating shaft are in threaded connection, a first groove and a second groove are formed in one side, far away from the turbine rotating shaft, of the main body, the second groove is formed in one side, close to the through hole, and the first groove is communicated with the second groove;
and a first sealing platform is arranged on the outer side of the heat shield.
The inner side of the heat shield, which is close to the through hole, is provided with a limiting ring, and the limiting ring is abutted to the outer ring of the integrated high-speed ball bearing. A second sealing table corresponding to the first sealing table is arranged on one side of the intermediate body close to the turbine rotating shaft;
furthermore, one end of the intermediate body, which is close to the turbine rotating shaft, is provided with a first boss corresponding to the first groove;
an oil inlet pipe is arranged above the intermediate body and communicated with the integrated high-speed ball bearing.
A sealing groove is formed in the first groove of the intermediate body, and a sealing ring is arranged in the sealing groove;
one end of the intermediate body close to the turbine rotating shaft and the second groove form a sealed cavity. The medium in the cavity is air, and a certain cooling effect can be achieved.
Further, a water cooling cavity is arranged above the intermediate body; the water cooling cavity is connected with a liquid inlet pipe and a liquid outlet pipe.
An oil unloading bin is arranged below the intermediate body, and a waste oil outlet is formed in the bottom of the oil unloading bin;
the pole part of turbine pivot is equipped with that the shaft shoulder is spacing, and the spacing position of shaft shoulder corresponds with the position of the high-speed ball bearing of integral type, and the high-speed ball bearing of integral type's outer lane and spacing ring butt, the high-speed ball bearing of integral type is spacing through the limit structure on the heat exchanger that insulates against heat.
Furthermore, a third groove is formed in one end, close to the turbine rotating shaft, of the oil sealing cover, the third groove is communicated with the integrated high-speed ball bearing, a first oil discharging hole is formed in the bottom of the oil sealing cover, and the first oil discharging hole is communicated with the oil discharging bin;
and a second oil unloading hole is arranged below the limiting ring and communicated with the oil unloading bin.
Furthermore, the oil sealing cover is abutted with the inner ring and the outer ring of the integrated high-speed ball bearing through an intermediate body. One end of the intermediate body, which is far away from the turbine rotating shaft, is provided with a threaded hole for mounting other pressure end rotor parts, and the pressure end rotor parts are added with prestress to enable the oil sealing cover to compress the inner ring and the outer ring of the integrated high-speed ball bearing.
The installation method of the integrated high-speed ball bearing integrated structure comprises the following steps:
the method comprises the steps of integrating a turbine rotating shaft in a first step, integrating a heat shield on the turbine rotating shaft in a second step, wherein the heat shield is different from a conventional heat shield in that a sealing ring platform on an original intermediate body is integrated on the heat shield to form a sealing structure with the turbine rotating shaft, and integrating a structure which replaces the intermediate body to limit axial movement of an outer ring of an integrated high-speed ball bearing on the heat shield.
Compared with the prior art, the integrated high-speed ball bearing integrated structure has the following beneficial effects:
1. the integrated intermediate is installed after the integrated high-speed ball bearing is installed in the integration process, so that the periphery of the integrated high-speed ball bearing is not shielded, whether the integrated high-speed ball bearing is integrated to a preset position along the axial direction or not can be clearly seen, meanwhile, the integration tool can be better designed by adopting the integrated structure to ensure the integration of the integrated high-speed ball bearing, and the visual integration and the easier assembly of the integrated high-speed ball bearing are realized.
2. In order to prevent the problem that the reliability is reduced due to the influence of high temperature of the vortex end borne by the integrated high-speed ball shaft in the design of the structure, a water-cooling cavity structure is added.
3. In order to enhance the sealing effect of the structure, a sealing ring is added on the heat shield, and meanwhile, in order to ensure that lubricating oil flowing out of the integrated high-speed ball bearing is guided into an intermediate body, oil drain groove structures are designed on the heat shield and the oil sealing cover.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of an integrated high-speed ball bearing according to an embodiment of the invention.
Description of reference numerals:
1. a turbine shaft; 2. a heat shield; 21. a first sealing station; 22. a first groove; 23. a second groove; 24. a limiting ring; 3. an integrated high-speed ball bearing; 4. an intermediate; 41. a second sealing table; 42. a first boss; 43. an oil inlet pipe; 44. a seal ring; 45. a water-cooled cavity; 46. unloading the oil bin; 47. a waste oil outlet; 48. a third groove; 49. a first oil discharge hole; 5. sealing an oil cover; 51. and a second oil relief 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.
The integrated high-speed ball bearing integrated structure comprises a turbine rotating shaft 1, a heat shield 2, an integrated high-speed ball bearing 3, a middle body 4 and an oil seal cover 5; the heat shield 2 is arranged on the turbine rotating shaft 1, the intermediate body 4 is arranged on the heat shield 2, and the integrated high-speed ball bearing 3 is arranged on the turbine rotating shaft 1; the intermediate body 4 is arranged on two sides of the integrated high-speed ball bearing 3; the oil seal cover 5 is arranged on the turbine rotating shaft 1 through a pressure end rotor part. A through hole is formed in the middle of the heat shield 2, an internal thread is formed in the through hole of the heat shield 2, an external thread corresponding to the internal thread is formed in the rod portion of the turbine rotating shaft 1, the heat shield 2 and the turbine rotating shaft 1 are in threaded connection, a first groove 22 and a second groove 23 are formed in one side, far away from the turbine rotating shaft 1, of the main body, the second groove 23 is formed in one side, close to the through hole, and the first groove 22 is communicated with the second groove 23; a first sealing platform 21 is arranged on the outer side of the heat shield 2. The integrated high-speed ball bearing is the prior art, and the model of the integrated super-speed bearing is an HRB/Harbin 51414 pressure bearing eight-class force ball bearing high-speed turntable bearing.
And a limiting ring 24 is arranged on the inner side of the heat shield 2 close to the through hole, and the limiting ring 24 is abutted against the outer ring of the integrated high-speed ball bearing 3. A second sealing table 41 corresponding to the first sealing table 21 is arranged on one side of the intermediate body 4 close to the turbine rotating shaft 1; one end of the intermediate body 4 close to the turbine rotating shaft 1 is provided with a first boss 42 corresponding to the first groove 22; an oil inlet pipe 43 is arranged above the intermediate body 4, and the oil inlet pipe 43 is communicated with the integrated high-speed ball bearing 3. A sealing groove is arranged in the first groove 22 of the intermediate body 4, and a sealing ring 44 is arranged in the sealing groove;
in the specific embodiment, one end of the intermediate body 4 close to the turbine rotating shaft 1 and the second groove 23 form a sealed cavity. The medium in the cavity is air, and a certain cooling effect can be achieved. A water cooling cavity 45 is arranged above the intermediate 4; the water cooling cavity 45 is connected with a liquid inlet pipe and a liquid outlet pipe. An oil discharge bin 46 is arranged below the intermediate body 4, and a waste oil outlet 47 is arranged at the bottom of the oil discharge bin 46; the pole portion of turbine pivot 1 is equipped with the shaft shoulder spacing, and the spacing position of shaft shoulder corresponds with integral type high-speed ball bearing 3's position, and integral type high-speed ball bearing 3's outer lane and spacing ring 24 butt, and integral type high-speed ball bearing 3 is spacing through the limit structure on the heat exchanger 2.
In a specific embodiment, one end of the oil sealing cover 5 close to the turbine rotating shaft 1 is provided with a third groove 48, the third groove 48 is communicated with the integrated high-speed ball bearing 3, the bottom of the oil sealing cover 5 is provided with a first oil discharging hole 49, and the first oil discharging hole 49 is communicated with the oil discharging bin 46; a second oil discharge hole 51 is arranged below the limiting ring 24, and the second oil discharge hole 51 is communicated with the oil discharge bin 46.
In the specific embodiment, the oil seal cover 5 abuts against the inner and outer rings of the integrated high-speed ball bearing 3 through the intermediate body 4. One end of the intermediate body 4, which is far away from the turbine rotating shaft 1, is provided with a threaded hole for mounting other pressure end rotor parts, and the pressure end rotor parts are added with prestress to enable the oil sealing cover 5 to compress the inner ring and the outer ring of the integrated high-speed ball bearing 3.
The installation method of the integrated structure of the integrated high-speed ball bearing 3 comprises the following steps:
the structure of the heat shield 2 is different from the conventional heat shield 2, namely, a sealing ring 44 on an original intermediate body 4 is integrated on the heat shield 2 to form a sealing structure with the turbine rotating shaft 1, and a structure for replacing the intermediate body 4 to limit axial movement of an outer ring of the integrated high-speed ball bearing 3 is integrated on the heat shield 2. The structure is characterized in that the function of the intermediate body 4 is separated for integration of the integrated high-speed ball bearing 3, the integrated high-speed ball bearing 3 is integrated on the turbine rotating shaft 1 after being heated in the third step, an inner ring is limited by a shaft shoulder on the turbine rotating, an outer ring is limited by a limiting structure on the heat shield 2, and the integration process of the step is not easy to see because the intermediate body 4 is not integrated yet, so that no shielding exists on the periphery of the integrated high-speed ball bearing 3, the integrated high-speed ball bearing 3 can be clearly seen whether to be integrated to a preset position along the axial direction or not, meanwhile, an integrated tool can be better designed to ensure the integration of the integrated high-speed ball bearing 3 by adopting the integrated structure, the intermediate body 4 and the oil seal cover 5 are integrated with the integrated high-speed ball bearing 3, and finally, and an oil seal cover 5 is added to compress the rotor sealing ring.
The device comprises a turbine rotating shaft 1, a heat shield 2, an integrated high-speed ball bearing 3, an intermediate body 4 and an oil seal cover 5. The integrated structure is that a sealing structure formed by the intermediate body 4 and the turbine shaft is changed to the heat shield 2, so that the original integrated assembly sequence is changed, namely, the turbine rotating shaft 1 is installed on a tool, then the heat shield 2 is installed on the turbine rotating shaft 1, then the integrated high-speed ball bearing 3 is installed on the shaft of the turbine rotating shaft 1, and finally the intermediate body 4 and the oil seal cover 5 are installed. After the structure is adopted, visualization can be realized when the integrated high-speed ball bearing 3 is assembled, so that whether the integrated high-speed ball bearing 3 is assembled to a preset position or not is observed, and the installation tool is easy to design. In order to make this structure reach better sealed and cooling effect, design water-cooling chamber 45 on midbody 4 and play the effect of cooling integral type high-speed ball bearing 3, the design has the seal groove according to steel type seal structure to consolidate the oil gas leakage effect on heat exchanger 2, has the draining groove in addition on heat exchanger 2 and oil seal lid 5, and the purpose is that the lubricating oil that flows out is got rid of in leading-in midbody 4 draining chamber with integral type high-speed ball bearing 3.
Claims (9)
1. The utility model provides a high-speed ball bearing integrated configuration of integral type which characterized in that: the turbine high-speed ball bearing comprises a turbine rotating shaft (1), a heat shield (2), an integrated high-speed ball bearing (3), a middle body (4) and an oil sealing cover (5);
the heat shield (2) is arranged on the turbine rotating shaft (1); the intermediate body (4) is arranged on the heat shield (2), and the integrated high-speed ball bearing (3) is arranged on the turbine rotating shaft (1);
the intermediate bodies (4) are arranged on two sides of the integrated high-speed ball bearing (3);
the oil seal cover (5) is arranged on the turbine rotating shaft (1) through a pressure end rotor part.
2. The integrated high-speed ball bearing integrated structure of claim 1, wherein: a through hole is formed in the middle of the heat shield (2), an internal thread is formed in the through hole of the heat shield (2), an external thread corresponding to the internal thread is formed in the rod portion of the turbine rotating shaft (1), the heat shield (2) is in threaded connection with the turbine rotating shaft (1), a first groove (22) and a second groove (23) are formed in one side, far away from the turbine rotating shaft (1), of the main body, the second groove (23) is formed in one side, close to the through hole, and the first groove (22) is communicated with the second groove (23);
and a first sealing platform (21) is arranged on the outer side of the heat shield (2).
3. The integrated high-speed ball bearing integrated structure of claim 2, wherein: the inner side of the heat shield (2) close to the through hole is provided with a limiting ring (24), and the limiting ring (24) is abutted to the outer ring of the integrated high-speed ball bearing (3).
4. The integrated high-speed ball bearing integrated structure of claim 1, wherein: a second sealing table (41) corresponding to the first sealing table (21) is arranged on one side, close to the turbine rotating shaft (1), of the intermediate body (4);
one end of the intermediate body (4) close to the turbine rotating shaft (1) is provided with a first boss (42) corresponding to the first groove (22);
an oil inlet pipe (43) is arranged above the intermediate body (4), and the oil inlet pipe (43) is communicated with the integrated high-speed ball bearing (3).
5. The integrated high-speed ball bearing integrated structure of claim 1, wherein: a sealing groove is arranged in the first groove (22) of the intermediate body (4), and a sealing ring (44) is arranged in the sealing groove; one end of the intermediate body (4) close to the turbine rotating shaft (1) and the second groove (23) form a sealed cavity.
6. The integrated high-speed ball bearing integrated structure of claim 1, wherein: a water cooling cavity (45) is arranged above the intermediate body (4);
an oil discharge bin (46) is arranged below the intermediate body (4), and a waste oil outlet (47) is arranged at the bottom of the oil discharge bin (46).
7. The integrated high-speed ball bearing integrated structure of claim 1, wherein: the shaft shoulder limiting structure is arranged on the rod portion of the turbine rotating shaft (1), the position of the shaft shoulder limiting structure corresponds to that of the integrated high-speed ball bearing (3), the outer ring of the integrated high-speed ball bearing (3) is abutted to the limiting ring (24), and the integrated high-speed ball bearing (3) is limited through the limiting structure on the heat insulation cover (2).
8. An integrated high-speed ball bearing integrated structure according to claim 7, wherein: a third groove (48) is formed in one end, close to the turbine rotating shaft (1), of the oil sealing cover (5), the third groove (48) is communicated with the integrated high-speed ball bearing (3), a first oil unloading hole (49) is formed in the bottom of the oil sealing cover (5), and the first oil unloading hole (49) is communicated with the oil unloading bin (46);
a second oil unloading hole (51) is arranged below the limiting ring (24), and the second oil unloading hole (51) is communicated with the oil unloading bin (46).
9. The integrated high-speed ball bearing integrated structure of claim 1, wherein: and the oil seal cover (5) is abutted with the inner ring and the outer ring of the integrated high-speed ball bearing (3) through the intermediate body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210905560.6A CN115419474A (en) | 2022-07-29 | 2022-07-29 | Integrated high-speed ball bearing integrated structure of integral type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210905560.6A CN115419474A (en) | 2022-07-29 | 2022-07-29 | Integrated high-speed ball bearing integrated structure of integral type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115419474A true CN115419474A (en) | 2022-12-02 |
Family
ID=84196094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210905560.6A Pending CN115419474A (en) | 2022-07-29 | 2022-07-29 | Integrated high-speed ball bearing integrated structure of integral type |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115419474A (en) |
-
2022
- 2022-07-29 CN CN202210905560.6A patent/CN115419474A/en active Pending
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