CN112065586B - Engine circulating lubrication oil way structure and engine rotating device - Google Patents
Engine circulating lubrication oil way structure and engine rotating device Download PDFInfo
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- CN112065586B CN112065586B CN202010937785.0A CN202010937785A CN112065586B CN 112065586 B CN112065586 B CN 112065586B CN 202010937785 A CN202010937785 A CN 202010937785A CN 112065586 B CN112065586 B CN 112065586B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/06—Arrangements of bearings; Lubricating
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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
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The invention discloses an engine circulating lubrication oil circuit structure and an engine rotating device, which adopt a shaft sleeve with a through hole in the middle, wherein one end of the shaft sleeve is provided with a front bearing mounting groove and a diffuser mounting platform, the other end of the shaft sleeve is provided with a rear bearing mounting groove, the end surface of the front bearing mounting groove, the end surface of the diffuser mounting platform and the rear bearing mounting groove of the shaft sleeve are respectively provided with an oil inlet hole and an oil outlet hole, the oil inlet hole of the diffuser is communicated with the oil outlet hole on the end surface of the diffuser mounting platform to form a front bearing lubricating oil inlet circuit, finally, the front bearing and the front bearing form a lubricating oil sealing cavity through a communicating channel arranged on the shaft sleeve, the single lubricating oil circulating system of the front bearing is in clearance fit with a rear bearing adjusting gasket to form the single lubricating oil circulating system of the rear bearing, the structure is simple and reasonable, and the lubricating and cooling effects are greatly improved, the lubricating oil consumption of the engine can be effectively reduced, the lubricating and cooling effects of the bearing can be improved, and the working stability and reliability of the engine can be improved.
Description
Technical Field
The invention relates to the field of engines, in particular to a circulating lubrication oil way structure of an engine and an engine rotating device.
Background
The lubricating oil system is one of the key systems of the engine and is mainly used for lubricating and cooling various bearing and transmission parts of the engine. When the engine is working, it is necessary to continuously deliver a sufficient amount of clean lubricating oil to the meshing between the bearings of the rotating parts of the engine and the transmission gear for lubrication, to carry away the heat generated by friction and the heat transferred to the lubricating oil by the surrounding high-temperature parts, to flush away the impurities and debris on the working surfaces of these parts, to maintain the normal working temperature conditions of these parts, to reduce friction and wear between the parts, and to prevent their corrosion and surface hardening. Therefore, the oil system plays a decisive role in the reliability, stability and longevity of the engine.
In view of the importance of engine lubrication and temperature reduction, lubrication systems have been the focus of research. In recent years, high performance engines have put new demands on lubrication systems with low vulnerability, light weight, small ventilation area and high reliability. The rotating speed of a common engine can reach tens of thousands of revolutions per minute, the rotating speed of a miniature engine can reach nearly 20 thousands of revolutions per minute, and due to the characteristics of small volume, simple structure, small number of parts and the like of the miniature engine, no independent lubricating oil path exists at present, and the miniature engine is generally lubricated by mixing fuel oil and lubricating oil in a specific ratio and finally mixed with high-temperature fuel gas and discharged out of the engine. Lubricating oil and fuel oil are mixed to affect the stable combustion of the engine, the lubricating oil has certain toxicity at high temperature, combustion tail gas is directly discharged into the air, certain harm can be caused to the environment and operators, the cooling effect is poor, the working stability and the reliability of the engine are affected, and the service life of the engine is shortened.
Disclosure of Invention
The invention aims to provide an engine circulating lubrication oil way structure and an engine rotating device, which overcome the defects of the prior art and are an independent circulating lubrication oil system with greatly improved lubrication and cooling effects, so that the consumption of engine lubricating oil is effectively reduced, the lubrication and cooling effects of bearings are improved, the working stability and reliability of an engine are improved, and the service life of the engine is prolonged.
In order to achieve the purpose, the invention adopts the following technical scheme:
a circulating lubrication oil circuit structure of an engine comprises a shaft sleeve with a through hole in the middle, wherein the through hole of the shaft sleeve is used for arranging a rotor shaft, one end of the shaft sleeve is provided with a front bearing mounting groove and a diffuser mounting platform, the front bearing mounting groove is used for mounting a front bearing, the diffuser mounting platform is used for mounting a diffuser, the other end of the shaft sleeve is provided with a rear bearing mounting groove, the rear bearing mounting groove is used for mounting a rear bearing, oil inlets and oil outlets are respectively arranged in the end surface of the front bearing mounting groove, the end surface of the diffuser mounting platform and the rear bearing mounting groove of the shaft sleeve, the oil inlet of the end surface of the diffuser mounting platform is communicated with the oil outlet of the end surface of the front bearing mounting groove and the oil inlet of the end surface of the rear bearing mounting groove, the oil outlet of the diffuser is communicated with the oil inlet of the end surface of the diffuser mounting platform, the oil inlet hole of the diffuser is communicated with the oil outlet hole on the end surface of the diffuser mounting table; the outer end of the front bearing is provided with a front bearing adjusting gasket for sealing the end part of the front bearing, and the outer end of the rear bearing is provided with a rear bearing sealing nut for sealing the end part of the rear bearing.
Furthermore, a front bearing sleeve is arranged at one end of the rotor shaft, and the front bearing is positioned in a front bearing mounting groove of the shaft sleeve; the rear bearing sleeve is arranged at the other end of the rotor shaft, and the rear bearing is positioned in the rear bearing mounting groove of the shaft sleeve.
Furthermore, a front bearing adjusting gasket is sleeved on the rotor shaft, the outer ring of the front bearing adjusting gasket is contacted with the inner ring of the diffuser, the end face of the diffuser is contacted with the end face of the outer ring of the front bearing, and the end face of the front bearing adjusting gasket is contacted with the end face of the inner ring of the front bearing.
Furthermore, the axial section of the front bearing adjusting gasket is conical, and the outer ring of the front bearing adjusting gasket is in contact with the conical surface of the inner ring of the diffuser.
Furthermore, a front bearing mounting gasket is arranged between the front bearing and the end face of the front bearing mounting groove of the shaft sleeve, oil through holes respectively communicated with the oil inlet hole and the oil outlet hole in the end face of the front bearing mounting groove are formed in the front bearing mounting gasket, and the end face of the front bearing mounting gasket is in contact with the end faces of the inner ring and the outer ring of the front bearing.
Furthermore, a communication channel between an oil inlet hole on the end surface of the diffuser installation platform and an oil outlet hole on the end surface of the front bearing installation groove is arranged in the pipe wall of the shaft sleeve, and a communication channel between the oil outlet hole on the end surface of the diffuser installation platform and the oil inlet hole on the end surface of the front bearing installation groove is arranged in the pipe wall of the shaft sleeve; the oil inlet hole of the diffuser mounting platform end face and the oil outlet hole communicating channel in the rear bearing mounting groove are arranged in the pipe wall of the shaft sleeve, and the oil outlet hole of the diffuser mounting platform end face and the oil inlet hole communicating channel in the rear bearing mounting groove are arranged in the pipe wall of the shaft sleeve.
Furthermore, the axis of the oil outlet hole on the end surface of the diffuser installation platform, the axis of the oil inlet hole on the end surface of the diffuser installation platform and the axis of the shaft sleeve are in the same plane, and the axis of the oil outlet hole of the rear bearing installation groove, the axis of the oil inlet hole of the rear bearing installation groove and the axis of the shaft sleeve are in the same plane.
Furthermore, an oil inlet hole in the bearing mounting groove is formed in the inner end face of the bearing mounting groove, and an oil outlet hole in the bearing mounting groove is formed in the inner circumferential wall face of the bearing mounting groove.
Furthermore, a sealing ring is arranged between the front bearing and the inner wall of the front bearing mounting groove of the shaft sleeve, a sealing ring groove is formed in the inner wall of the shaft sleeve, and the sealing ring is arranged in the sealing ring groove.
An engine rotating device based on a circulating lubrication oil circuit structure is characterized in that a compressed air wheel is mounted at one end of a rotor shaft, the compressed air wheel is fastened at one end of the rotor shaft through a front nut, the front nut is connected with one end of the rotor shaft through threads, a front bearing is arranged between the compressed air wheel and a shaft sleeve, a front bearing adjusting gasket is arranged between the compressed air wheel and the front bearing, and a front bearing mounting gasket is arranged between the front bearing and the shaft sleeve; the turbine is installed to the other end of rotor shaft, and the turbine is located the outer end of rear bearing, is equipped with rear bearing adjusting shim between turbine and the bearing, is equipped with the preceding mounting shim of rear bearing between bearing and the axle sleeve, and the turbine passes through the back nut and fastens in the other end of rotor shaft.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention relates to a circulating lubricating oil path structure of an engine, which adopts a shaft sleeve with a through hole in the middle, wherein one end of the shaft sleeve is provided with a front bearing mounting groove and a diffuser mounting platform, the other end of the shaft sleeve is provided with a rear bearing mounting groove, the end surface of the front bearing mounting groove, the end surface of the diffuser mounting platform and the rear bearing mounting groove of the shaft sleeve are respectively provided with an oil inlet hole and an oil outlet hole, the oil inlet hole of the end surface of the diffuser mounting platform is communicated with the oil outlet hole of the end surface of the front bearing mounting groove and the oil outlet hole of the end surface of the rear bearing mounting groove, the oil outlet hole of the diffuser is communicated with the oil inlet hole of the end surface of the diffuser mounting platform, the oil inlet hole of the diffuser is communicated with the oil outlet hole of the end surface of the diffuser mounting platform to form a front bearing lubricating oil path, and finally the front bearing and the front bearing form a lubricating oil sealing cavity through a communicating channel arranged on the shaft sleeve, the independent lubricating oil circulation system that realizes front bearing and rear bearing adjusting gasket clearance fit form the sealed chamber of rear bearing lubricating oil, realize the independent lubricating oil circulation system of rear bearing, and simple structure is reasonable, and lubricated and the great independent circulation lubricating oil system that improves of cooling effect can effectual reduction engine lubricating oil consumption and promote bearing lubrication and cooling effect, improves engine job stabilization nature, reliability, long-life.
Furthermore, a lubricating oil outlet hole is formed in the end face of the front bearing mounting groove and is matched with the rear bearing front mounting gasket through an oil through hole to form a rear bearing lubricating oil inlet oil way; the oil outlet of the rear bearing mounting groove is positioned on the mounting surface of the outer steel ring of the shaft sleeve bearing, so that the bearing cavity can be completely filled with lubricating oil, and the lubricating and cooling effects are improved.
Furthermore, an independent lubricating oil path channel is designed in the wall of the shaft sleeve, and a bearing lubricating sealing cavity is formed by auxiliary parts, so that an independent circulating lubricating system of the miniature aero-engine is realized, the lubricating and cooling efficiency of the miniature turbojet engine is effectively improved, the waste and damage of lubricating oil are avoided, and the circulating reuse of the lubricating oil is realized.
The engine rotating device based on the circulating lubrication oil circuit structure realizes the shunting of the lubricating oil and the fuel oil of the micro aero-engine, establishes an independent and recyclable lubricating oil system of the micro aero-engine, greatly improves the lubricating and cooling efficiency of a rotating part of the micro aero-engine, and the lubricating oil circularly reciprocates through the oil return channel, thereby greatly saving the use of the lubricating oil, avoiding the damage of the lubricating oil to the environment and operators under the high-temperature condition, obviously improving the stability and the reliability of the micro aero-engine, prolonging the service life of an engine bearing and prolonging the service life of the micro aero-engine.
Drawings
FIG. 1 is a schematic diagram of a circulating lubrication oil path structure for lubricating a front bearing in an embodiment of the invention.
The installation section structure of the shaft sleeve is schematically shown.
FIG. 2 is a schematic diagram of a circulating lubrication oil path structure for lubricating a rear bearing in the embodiment of the invention.
FIG. 3 is a schematic view of the structure assembly structure of the circulating lubrication oil path in the embodiment of the invention.
FIG. 4 is a schematic diagram of a front bearing mounting pad in an embodiment of the invention.
FIG. 5 is a drawing of the front end face of the mounting seat of the rear bearing of the shaft sleeve and the mounting pad in the embodiment of the invention, forming a lubricating oil cavity of the rear bearing.
FIG. 6 is a schematic view of a rear bearing of the present invention in partial cross-section with a rear bearing seal nut in clearance fit with a rear bearing spacer to form a rear bearing seal cavity.
In the figure: 1-front nut, 2-inlet hood, 3-rotor shaft, 4-pressure wheel, 5-front bearing, 6-diffuser, 7-combustion chamber, 8-shaft sleeve, 9-rear bearing, 10-engine casing shell, 11-turbine wire guider, 12-rear bearing adjusting pad, 13-turbine, 14-exhaust cone, 15-tail nozzle, 16-front bearing adjusting pad, 17-front bearing installing pad, 18-sealing ring, 19-rear bearing installing pad, 20-rear bearing sealing nut and 25-rear nut.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 and 2, a circulating lubrication oil path structure of an engine includes a shaft sleeve 8 with a through hole in the middle, a rotor shaft 3 is arranged in the through hole structure of the shaft sleeve 8, a front bearing mounting groove and a diffuser mounting table are arranged at one end of the shaft sleeve 8, a rear bearing mounting groove is arranged at the other end of the shaft sleeve 8, an oil inlet and an oil outlet are respectively arranged in the front bearing mounting groove end face, the diffuser mounting table end face and the rear bearing mounting groove of the shaft sleeve 8, the oil inlet of the diffuser mounting table end face is communicated with the oil outlet of the front bearing mounting groove end face and the oil outlet of the rear bearing mounting groove, and the oil outlet of the diffuser mounting table end face is communicated with the oil inlet of the front bearing mounting groove end face and the oil inlet of the rear bearing mounting groove; one end of the rotor shaft 3 is provided with a front bearing 5, and the front bearing 5 is positioned in a front bearing mounting groove of the shaft sleeve 8; the other end of the rotor shaft 3 is provided with a rear bearing 9, and the rear bearing 9 is positioned in a rear bearing mounting groove of the shaft sleeve 8; install diffuser 6 in the diffuser mount table of axle sleeve 8, the oil outlet of diffuser 6 communicates with the inlet port of diffuser mount table terminal surface, and the inlet port of diffuser 6 communicates with the oil outlet of diffuser mount table terminal surface, and the outer end of front bearing 5 is equipped with the front bearing adjusting shim 16 that is used for sealed front bearing 5 tip, and the outer end of rear bearing 9 is equipped with the rear bearing seal nut 20 that is used for sealed rear bearing 9 tip. The diffuser 6 is provided with two paths of lubricating oil channels, wherein one path of lubricating oil channel is communicated with an oil outlet on the diffuser 6, and an oil inlet of the path of lubricating oil channel is connected with a lubricating oil source; another way lubricating oil passageway intercommunication diffuser 6 on the inlet port, this way lubricating oil passageway's oil outlet connects the lubricating oil collecting box, in the use, as shown in fig. 1, lubricating oil passes through the diffuser 6 on the lubricating oil passageway of the same way and gets into the inlet port of diffuser mount table terminal surface on the axle sleeve 8 through the oil outlet, lubricating oil flows out from the oil outlet of the front bearing mounting groove terminal surface of axle sleeve 8 and the oil outlet in the rear bearing mounting groove, lubricating oil is respectively to front bearing 5 and rear bearing 9 lubricated cooling, get into through the inlet port of front bearing mounting groove terminal surface and the inlet port in the rear bearing mounting groove after the lubricated cooling, collect the outlet port of diffuser mount table terminal surface and discharge, realize the lubrication and the cooling of engine rotor shaft and bearing.
The front bearing adjusting gasket 16 is sleeved on the rotor shaft 3, as shown in fig. 1, the outer ring of the front bearing adjusting gasket 16 is in contact with the inner ring of the diffuser 6, the end surface of the diffuser 6 is in contact with the end surface of the outer ring of the front bearing 5, and the end surface of the front bearing adjusting gasket 16 is in contact with the end surface of the inner ring of the front bearing 5 to form end surface sealing of the front bearing 5; the axial section of the front bearing adjusting gasket 16 is conical, the outer ring of the front bearing adjusting gasket 16 is in conical contact with the inner ring of the diffuser 6, and the front bearing adjusting gasket 16 bears axial pressure to seal the end face of the front bearing 5.
A front bearing mounting gasket 17 is arranged between the front bearing 5 and the front bearing mounting groove end face of the shaft sleeve 8, as shown in fig. 4, an oil through hole communicated with the oil inlet hole and the oil outlet hole on the front bearing mounting groove end face is formed in the front bearing mounting gasket 17, the end face of the front bearing mounting gasket 17 is in contact with the inner ring end face and the outer ring end face of the front bearing 5, the front bearing mounting gasket is sealed by axial pressure, a sealing space is formed in the bearing cavity of the front bearing 5 through the front bearing adjusting gasket 16 and the front bearing mounting gasket 17, and oil leakage is prevented. A sealing ring 18 is arranged between the front bearing 5 and the inner wall of the front bearing mounting groove of the shaft sleeve 8, a sealing ring groove is formed in the inner wall of the shaft sleeve 8, and the sealing ring 18 is arranged in the sealing ring groove.
As shown in fig. 1, a communication channel between an oil inlet on the end surface of the diffuser mount and an oil outlet on the end surface of the front bearing mounting groove is arranged in the pipe wall of the shaft sleeve 8, and a communication channel between the oil outlet on the end surface of the diffuser mount and the oil inlet on the end surface of the front bearing mounting groove is arranged in the pipe wall of the shaft sleeve 8; as shown in fig. 2, a communication channel between an oil inlet on the end surface of the diffuser mount and an oil outlet in the rear bearing mounting groove is arranged in the pipe wall of the shaft sleeve 8, and specifically, the communication channel is arranged along the axial direction of the shaft sleeve 8; the oil outlet hole on the end surface of the diffuser mounting platform and the oil inlet hole in the rear bearing mounting groove are communicated with each other and arranged in the pipe wall of the shaft sleeve 8. The axis of the oil outlet hole of the end face of the diffuser installation platform, the axis of the oil inlet hole of the end face of the diffuser installation platform and the axis of the shaft sleeve 8 are in the same plane, namely the axis of the oil outlet hole of the end face of the diffuser installation platform and the axis of the oil inlet hole of the end face of the diffuser installation platform are symmetrically distributed on the end face of the shaft sleeve 8 about the axis of the shaft sleeve 8, so that lubricating oil can be completely soaked in the bearing cavity, and the lubricating and cooling effects are improved.
Specifically, in order to improve the lubricating and cooling effect of the rear bearing 9, as shown in fig. 6, an oil inlet hole in the bearing mounting groove is formed in the inner end surface of the bearing mounting groove, an oil outlet hole in the bearing mounting groove is formed in the inner circumferential wall surface of the bearing mounting groove, and a rear bearing mounting gasket 19 is arranged between the rear bearing 9 and the rear bearing mounting groove of the shaft sleeve 8, as shown in fig. 5, an oil through hole communicated with the inner end surface of the rear bearing mounting groove is formed in the rear bearing mounting gasket 19 to realize hole-site matching, so that lubricating oil entering from a diffuser can enter a rear bearing cavity through the transition section of the shaft sleeve 8 to fully lubricate and cool the rear bearing, and the lubricating oil can completely flow through the bearing cavity; the rear bearing mounting groove of the shaft sleeve 8, the rear bearing mounting gasket 19, the rear bearing 9 and the rear end surface of the front bearing cavity are balanced in air pressure and lubricating oil pressure, and the sealing integrity of the rear end surface of the front bearing is ensured; the rear bearing 9, the rear bearing adjusting gasket 12 and the rear bearing sealing nut 20 are in clearance fit, and air pressure sealing is carried out by adopting cooling air flow on the outer wall surface of the combustion chamber, so that the sealing integrity of the rear end surface of the rear bearing cavity is ensured, and no leakage of lubricating oil is ensured; the inner circumferential wall surface of the rear bearing mounting groove of the shaft sleeve 8 is provided with threads which are matched and connected with a rear bearing sealing nut 20, and the rear bearing sealing nut 20 is screwed into the rear bearing mounting seat of the shaft sleeve 8; the oil inlet is positioned on the inner end surface of the rear bearing mounting groove, the oil outlet is positioned on the inner circumferential wall surface of the rear bearing mounting groove, or the oil inlet and the oil outlet are both positioned on the end surface of the rear bearing mounting groove, and the oil outlet is positioned in the outer steel ring curve of the outer end of the rear bearing; the oil inlet and the oil-out in the rear bearing mounting groove are radially 180 degrees distributed, namely, the oil outlet hole axis of the rear bearing mounting groove, the oil inlet hole axis of the rear bearing mounting groove and the axis of the shaft sleeve 8 are in the same plane, the oil outlet hole of the diffuser mounting table end face and the oil inlet hole of the diffuser mounting table end face are symmetrically distributed on the end face of the shaft sleeve 8 about the axis of the shaft sleeve 8, the circulation area and the length of lubricating oil in the rear bearing cavity are increased, the bearing cavity can be completely filled with the lubricating oil, and the cooling and lubricating effects of the rear bearing are greatly enhanced.
As shown in fig. 3, in the engine rotating device based on the above-mentioned circulating lubrication oil path structure, a pressure turbine 4 is installed at one end of the rotor shaft 3, the pressure turbine 4 is fastened at one end of the rotor shaft 3 through a front nut 1, the front nut 1 is connected with one end of the rotor shaft 3 through a screw thread, a front bearing 5 is arranged between the pressure turbine 4 and a shaft sleeve 8, a front bearing adjusting gasket 16 is arranged between the pressure turbine 4 and the front bearing 5, and a front bearing installing gasket 17 is arranged between the front bearing 5 and the shaft sleeve 8; a turbine 13 is arranged at the other end of the rotor shaft 3, the turbine 13 is positioned at the outer end of the rear bearing 9, a rear bearing adjusting gasket 12 is arranged between the turbine 13 and the bearing 9, a rear bearing front mounting gasket 19 is arranged between the bearing 9 and the shaft sleeve 8, and the turbine 13 is fastened at the other end of the rotor shaft 3 through a rear nut 25.
As shown in fig. 3, the diffuser 6 is fixedly connected with the end surface of the diffuser mounting table of the shaft sleeve 8 through screws, and hole site matching is performed, i.e., an oil outlet of the diffuser 6 is aligned and communicated with an oil inlet of the end surface of the diffuser mounting table, and an oil inlet of the diffuser 6 is aligned and communicated with an oil outlet of the end surface of the diffuser mounting table; lubricating oil entering from the front end of the diffuser 6 enters the end face of the front bearing mounting groove of the shaft sleeve 8 through the matching through hole; lubricating oil flows into the front bearing cavity from the matching holes of the shaft sleeve 8 and the front bearing rear mounting gasket 17 to lubricate and cool the front bearing; the front bearing adjusting gasket 16 is in clearance fit with the front end face of the outer steel ring of the front bearing 5, and the front bearing adjusting gasket 16 is compressed and sealed by high-pressure air behind the diffuser 6, so that the sealing integrity of the front end face of the front bearing cavity is ensured, and no leakage of lubricating oil is ensured; the front bearing rear mounting gasket 17 is in clearance fit with the rotor shaft 3 and the transition section of the shaft sleeve 8, and is balanced with air pressure and lubricating oil pressure between rear bearing cavities, so that the sealing integrity of the end face of the front bearing mounting groove is ensured. The end face of the other end of the shaft sleeve 8 is matched and installed with the inner ring of the turbine guider 11.
When the engine is assembled integrally, the rotor shaft 3 is installed in the shaft sleeve 8, the rear bearing front installation gasket 19 is placed at the rear end of the rotor shaft, the oil hole in the rear bearing front installation gasket 19 is aligned with the oil outlet hole in the rear bearing installation groove, then the rear bearing 9 is pressed in, and then the rear bearing sealing nut 20 is installed; placing a front bearing mounting gasket 17 at the rear end of the rotor shaft, aligning an oil hole of the front bearing mounting gasket 17 with an oil inlet hole and an oil outlet hole of the end surface of a front bearing mounting groove, then pressing a front bearing 5, pressing a diffuser 6 and a front bearing adjusting gasket 16 at the end part of a shaft sleeve 8, and tightly pressing and sealing the front bearing adjusting gasket 16 by using a pressure gas wheel 4 and a front nut 1; and finally, sequentially assembling the rear bearing adjusting pad 12, the turbine 13 and the rear nut 25 to realize the assembly of the engine rotating device.
The shaft sleeve 8 is an independent circulating lubricating oil system which is integrally formed by additive manufacturing, has greatly improved lubricating and cooling effects, replaces the original structure to realize the circulating use of lubricating oil, thereby effectively reducing the consumption of the lubricating oil of an engine, improving the lubricating and cooling effects of a bearing, and improving the working stability, reliability and long service life of the engine.
The foregoing describes embodiments of the present invention and is intended to be illustrative, but not limiting, of the invention, the scope of which is defined by the claims and their equivalents.
Claims (8)
1. A circulating lubrication oil circuit structure of an engine is characterized by comprising a shaft sleeve (8) with a through hole in the middle, wherein the through hole of the shaft sleeve (8) is used for arranging a rotor shaft (3), one end of the shaft sleeve (8) is provided with a front bearing mounting groove and a diffuser mounting platform, the front bearing mounting groove is used for mounting a front bearing (5), the diffuser mounting platform is used for mounting a diffuser (6), the other end of the shaft sleeve (8) is provided with a rear bearing mounting groove, the rear bearing mounting groove is used for mounting a rear bearing (9), the end surface of the front bearing mounting groove of the shaft sleeve (8), the end surface of the diffuser mounting platform and the rear bearing mounting groove are respectively provided with an oil inlet and an oil outlet, the oil inlet of the end surface of the diffuser mounting platform is communicated with the oil outlet of the end surface of the front bearing mounting groove and the oil inlet of the rear bearing mounting groove, an oil outlet hole of the diffuser (6) is communicated with an oil inlet hole of the end face of the diffuser mounting table, the oil inlet hole of the diffuser (6) is communicated with the oil outlet hole of the end face of the diffuser mounting table, a front bearing adjusting gasket (16) used for sealing the end part of the front bearing (5) is arranged at the outer end of the front bearing (5), a rear bearing sealing nut (20) used for sealing the end part of the rear bearing (9) is arranged at the outer end of the rear bearing (9), the front bearing (5) is sleeved at one end of the rotor shaft (3), and the front bearing (5) is positioned in a front bearing mounting groove of the shaft sleeve (8); the rear bearing (9) is sleeved at the other end of the rotor shaft (3), the rear bearing (9) is positioned in a rear bearing mounting groove of the shaft sleeve (8), a communication channel between an oil inlet hole at the end face of the diffuser mounting table and an oil outlet hole at the end face of the front bearing mounting groove is arranged in the pipe wall of the shaft sleeve (8), and a communication channel between the oil outlet hole at the end face of the diffuser mounting table and the oil inlet hole at the end face of the front bearing mounting groove is arranged in the pipe wall of the shaft sleeve (8); the oil inlet hole of the diffuser installation platform end face and the oil outlet hole communicating channel in the rear bearing installation groove are arranged in the pipe wall of the shaft sleeve (8), and the oil outlet hole of the diffuser installation platform end face and the oil inlet hole communicating channel in the rear bearing installation groove are arranged in the pipe wall of the shaft sleeve (8).
2. The engine circulating lubrication oil path structure of claim 1, wherein a front bearing adjusting gasket (16) is sleeved on the rotor shaft (3), an outer ring of the front bearing adjusting gasket (16) is in contact with an inner ring of the diffuser (6), an end face of the diffuser (6) is in contact with an end face of an outer ring of the front bearing (5), and an end face of the front bearing adjusting gasket (16) is in contact with an end face of an inner ring of the front bearing (5).
3. The engine circulating lubrication oil path structure as recited in claim 2, wherein the axial section of the front bearing adjusting gasket (16) is conical, and the outer ring of the front bearing adjusting gasket (16) is in conical contact with the inner ring of the diffuser (6).
4. The circulating lubrication circuit structure of the engine according to claim 1, wherein a front bearing mounting gasket (17) is provided between the front bearing (5) and the front bearing mounting groove end surface of the shaft sleeve (8), the front bearing mounting gasket (17) is provided with oil through holes respectively communicating with the oil inlet hole and the oil outlet hole on the front bearing mounting groove end surface, and the end surface of the front bearing mounting gasket (17) is in contact with the end surfaces of the inner ring and the outer ring of the front bearing (5).
5. The engine circulating lubrication oil path structure of claim 1, wherein the axis of the oil outlet hole on the end surface of the diffuser mounting platform, the axis of the oil inlet hole on the end surface of the diffuser mounting platform and the axis of the shaft sleeve (8) are in the same plane, and the axis of the oil outlet hole of the rear bearing mounting groove, the axis of the oil inlet hole of the rear bearing mounting groove and the axis of the shaft sleeve (8) are in the same plane.
6. The engine circulating lubrication oil path structure of claim 1, wherein the oil inlet hole in the bearing mounting groove is formed in the inner end surface of the bearing mounting groove, and the oil outlet hole in the bearing mounting groove is formed in the inner circumferential wall surface of the bearing mounting groove.
7. The engine circulating lubrication oil circuit structure as claimed in claim 1, wherein a seal ring (18) is arranged between the front bearing (5) and the inner wall of the front bearing mounting groove of the shaft sleeve (8), a seal ring groove is formed in the inner wall of the shaft sleeve (8), and the seal ring (18) is arranged in the seal ring groove.
8. An engine rotating device based on a circulating lubrication oil circuit structure according to claim 1, characterized in that a pressure wheel (4) is mounted at one end of a rotor shaft (3), the pressure wheel (4) is fastened at one end of the rotor shaft (3) through a front nut (1), the front nut (1) is in threaded connection with one end of the rotor shaft (3), a front bearing (5) is arranged between the pressure wheel (4) and a shaft sleeve (8), a front bearing adjusting gasket (16) is arranged between the pressure wheel (4) and the front bearing (5), and a front bearing mounting gasket (17) is arranged between the front bearing (5) and the shaft sleeve (8); turbine (13) are installed to the other end of rotor shaft (3), and turbine (13) are located the outer end of rear bearing (9), are equipped with rear bearing adjusting shim (12) between turbine (13) and rear bearing (9), are equipped with before rear bearing installation gasket (19) between rear bearing (9) and axle sleeve (8), and turbine (13) are fastened in the other end of rotor shaft (3) through back nut (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010937785.0A CN112065586B (en) | 2020-09-08 | 2020-09-08 | Engine circulating lubrication oil way structure and engine rotating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN114060152B (en) * | 2021-12-24 | 2022-12-06 | 常州环能涡轮动力股份有限公司 | Fuel oil atomization structure of micro turbojet engine |
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