CN109372597B - Adjustable turbocharger - Google Patents
Adjustable turbocharger Download PDFInfo
- Publication number
- CN109372597B CN109372597B CN201811454762.3A CN201811454762A CN109372597B CN 109372597 B CN109372597 B CN 109372597B CN 201811454762 A CN201811454762 A CN 201811454762A CN 109372597 B CN109372597 B CN 109372597B
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- CN
- China
- Prior art keywords
- shaft sleeve
- oil
- shaft
- casing
- turbine
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims description 9
- 239000010802 sludge Substances 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 59
- 239000010705 motor oil Substances 0.000 description 17
- 230000005540 biological transmission Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
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
- 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
-
- 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
-
- 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
-
- 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
- F01D25/18—Lubricating arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
Abstract
本发明提供一种可调式涡轮增压器，包括外壳和涡轮轴，所述外壳与所述涡轮轴间设有轴套一和轴套二，所述轴套一固定连接在所述外壳上，所述轴套二上设有滑杆，所述外壳内壁设有与安装杆相对应的滑槽，所述轴套一和所述轴套二间设有间隙。本发明采用轴套结构，轴套一通过限位块与外壳固定连接，不能移动与旋转，轴套二可以沿轴向相对轴套一移动，从而使两者之间的螺旋形间隙由大变小锥形齿二涡轮轴组成机油通道，机油可以从机油入口处进入该机油通道后，再从机油出口流出，改变其厚度、压力，使其不易形成油泥。另外，机油通道内的油流经涡轮轴表面时，带走一部分热量，降低涡轮轴的表面温度，进一步防止涡轮轴的表面形成油泥。
The invention provides an adjustable turbocharger, comprising a casing and a turbine shaft, a first shaft sleeve and a second shaft sleeve are arranged between the casing and the turbine shaft, and the first shaft sleeve is fixedly connected to the casing, The second shaft sleeve is provided with a sliding rod, the inner wall of the casing is provided with a sliding groove corresponding to the installation rod, and a gap is provided between the first shaft sleeve and the second shaft sleeve. The invention adopts the shaft sleeve structure, the first shaft sleeve is fixedly connected with the outer casing through the limit block, and cannot move and rotate, while the second shaft sleeve can move relative to the first shaft sleeve in the axial direction, so that the helical gap between the two can be changed from large to large. The two turbine shafts with small conical teeth form an oil channel, the oil can enter the oil channel from the oil inlet, and then flow out from the oil outlet, changing its thickness and pressure, so that it is not easy to form sludge. In addition, when the oil in the oil passage flows through the surface of the turbine shaft, it takes away part of the heat, reduces the surface temperature of the turbine shaft, and further prevents the formation of sludge on the surface of the turbine shaft.
Description
Technical Field
The invention belongs to the technical field of turbochargers, and particularly relates to an adjustable turbocharger.
Background
Existing turbochargers use floating bearings, i.e., an oil film between the shaft and the bearing tube is used to support the weight of the shaft. The middle position of the turbocharger shell is oppositely provided with an oil inlet hole and an oil outlet hole, so that engine oil enters between the shaft and the bearing pipe to form an oil film, and when the engine oil flows out, heat on a part of the turbocharger is taken away, and the working temperature of the turbocharger is reduced. When the turbocharger works normally, the rotating speed is up to hundreds of thousands of revolutions per minute, so that a rotating shaft and a bearing of the turbocharger must be well lubricated, a large amount of heat in the turbocharger is carried away from the turbocharger through the flowing of lubricating oil, and a stable oil film is formed in the turbocharger in a long-term working state, so that carbon deposition is formed.
Disclosure of Invention
The invention provides an adjustable turbocharger, aiming at solving the problems of generating deposits and reducing the working temperature of the turbocharger during working.
The utility model provides a turbo charger with adjustable, includes shell, turbine shaft, housing and establishes the actuating mechanism on the housing, the shell with be equipped with the axle sleeve between the turbine shaft, the axle sleeve include axle sleeve one and axle sleeve two, axle sleeve one fixed connection be in on the shell, axle sleeve two slides and sets up on the shell inner wall, axle sleeve one with axle sleeve two junctions has the clearance, actuating mechanism be used for the drive axle sleeve two remove.
Preferably, the gap is a spiral gap extending from one end of the turbine shaft to the other end of the turbine shaft. The clearance forms an oil passage with the turbine shaft and the housing, and oil can flow from the oil inlet, then to the clearance, and then from the clearance to the oil outlet.
Furthermore, a sliding rod is arranged on the second shaft sleeve, and a sliding groove corresponding to the sliding rod is formed in the inner wall of the shell.
Preferably, the driving mechanism comprises a stepping motor, the motor is arranged on the shell, the stepping motor is in transmission connection with the first bevel gear, the second bevel gear and the screw rod in sequence, and the second shaft sleeve is provided with a thread groove matched with the thread on the screw rod. The driving device drives the screw rod to rotate by controlling the forward and reverse rotation of the stepping motor, so that the screw thread on the screw rod drives the second shaft sleeve to reciprocate back and forth.
Further, the screw rod sealing device further comprises end covers, wherein the end covers are arranged at two ends of the shell, holes are formed in the end covers, the screw rod penetrates through the holes to be connected with the thread grooves, and sealing rings are arranged in the holes.
Preferably, one end of the first shaft sleeve is provided with a limiting block, and when the gap is minimum, the length of the second shaft sleeve extending out of the first shaft sleeve is not greater than the thickness of the limiting block. The limiting block is connected with the oil seal, and a corresponding space is reserved for the second shaft sleeve to move back and forth.
Furthermore, two ends of the shaft sleeve are provided with oil seals. In order to ensure the sealing performance of the turbocharger, oil seals are arranged at two ends of the shaft sleeve.
Preferably, an oil outlet and an oil inlet are further formed in the two ends of the shell, and the oil inlet and the oil outlet are communicated with the gap.
Has the advantages that: the invention adopts a shaft sleeve structure, the first shaft sleeve is fixedly connected with the shell through a limiting block and cannot move or rotate, and the second shaft sleeve can move relative to the first shaft sleeve along the axial direction, so that a spiral gap between the first shaft sleeve and the second shaft sleeve is formed into an engine oil channel by a tapered gear two-turbine shaft with a small size, and engine oil can enter the engine oil channel from an engine oil inlet and then flow out from an engine oil outlet, so that the thickness and the pressure of the engine oil channel are changed, and oil sludge is not easy to form. In addition, when oil in the engine oil channel flows through the surface of the turbine shaft, a part of heat is taken away, the surface temperature of the turbine shaft is reduced, and oil sludge is further prevented from being formed on the surface of the turbine shaft.
Drawings
FIG. 1 is a schematic view of a stepping motor driving structure according to the present invention;
FIG. 2 is an overall structural view of the present invention;
FIG. 3 is a cross-sectional view of the present invention;
FIG. 4 is a schematic view of the bushing installation of the present invention;
FIG. 5 is a schematic view of the bushing assembly of the present invention;
FIG. 6 is a bevel gear mounting schematic of the present invention;
FIG. 7 is an enlarged view of FIG. 6;
FIG. 8 is an enlarged view of FIG. 7;
FIG. 9 is a schematic view of a stop of the present invention;
FIG. 10 is a schematic view of the bushing assembly of the present invention;
FIG. 11 is a schematic view of the internal mechanism of the housing of the present invention;
1. an oil inlet; 2. a slide bar; 3. a screw rod; 4. a seal ring; 5. a stepping motor; 6. oil sealing; 7. an oil outlet; 8. a turbine shaft; 9. a housing; 10. a limiting block; 11. a first shaft sleeve; 12. a second shaft sleeve; 13. a helical gap; 14. a first bevel gear; 15. a second bevel gear; 16. a chute; 17. an end cap; 18. a sliding pair; 19. a housing; 20. a drive shaft; 21. an impeller shaft.
Detailed description of the preferred embodiments
As shown in fig. 3, the adjustable turbocharger comprises a housing 9, a turbine shaft 8, a housing 19 and a driving mechanism arranged on the housing 19, wherein the driving mechanism is used for driving the second shaft sleeve 12 to move, the driving mechanism comprises a stepping motor 5, the stepping motor 5 is sequentially in transmission connection with a first bevel gear 14, a second bevel gear 15 and a screw rod 3 on the inner side of the housing 19, the stepping motor 5 is in transmission connection with the first bevel gear 14 through a transmission shaft 20, the transmission shaft 20 penetrates through the housing 19 and is coaxially and fixedly connected with the first bevel gear 14 in the housing 19, and the transmission shaft 20 and the housing 19 are suitable for being in sealed rotation fit. And a thread groove matched with the thread on the screw rod 3 is formed in the second shaft sleeve 12. A first shaft sleeve 11 and a second shaft sleeve 12 are arranged between the shell 9 and the turbine shaft 8, the first shaft sleeve 11 is fixedly connected to the shell 9, an axial sliding rod 2 is fixedly connected to the outer side wall of the second shaft sleeve 12, as shown in fig. 11, a sliding groove 16 in sliding fit with the sliding rod 2 is arranged on the inner wall of the shell 9, as shown in fig. 5, a gap is arranged between the first shaft sleeve 11 and the second shaft sleeve 12, the gap is a spiral gap 13, and the spiral gap 13 extends from one end of the turbine shaft 8 to the other end of the turbine shaft 8. In order to improve the sealing performance of the turbocharger, oil seals 6 are arranged at two ends of the first shaft sleeve 11, the oil seals 6 are arranged in inner holes of end covers 17 fixed at two ends of a shell 9, two ends of a turbine shaft 8 are respectively and coaxially fixedly connected with impeller shafts 21, each impeller shaft 21 is respectively arranged in inner holes of adjacent end covers 12 in a penetrating mode, sealing between each impeller shaft 21 and the inner hole is achieved through the oil seals 6, and a plurality of turbine blades are circumferentially arranged at free ends of the impeller shafts 21. The shell 9 further comprises an oil outlet 7 and an oil inlet 1 which are positioned at two ends of the shell 9, and the oil outlet 7 and the oil inlet 1 are communicated with the spiral gap 13. The spiral gap 13 forms with the turbine shaft 8 and the housing 9 an oil passage through which oil can flow from the oil inlet 1 to the gap and from the gap to the oil outlet 7. The screw rod 3 penetrates through the adjacent end covers 17, a smooth rod with a smooth outer side surface is arranged on the position, close to the end cover 17, of the screw rod 3, the smooth rod is matched in a corresponding hole in the end cover 17 in a rotating mode through a bearing, and a sealing ring 4 is arranged in the hole.
As shown in fig. 4 and 9, a limiting block 10 is fixedly connected to one end of the first shaft sleeve 11 far away from the thread groove. As shown in fig. 10, when the gap is zero, axial misalignment will occur between the first shaft sleeve 11 and the second shaft sleeve 12, and the length of the second shaft sleeve 12 extending out of the first shaft sleeve 11 is not greater than the axial thickness of the limiting block 10 along the first shaft sleeve 11. The first shaft sleeve 11 and the second shaft sleeve 12 are respectively provided with an axial end face, the two end faces are adjacent and are tightly pressed and attached, as shown in fig. 5, an axial sliding pair 18 in sealing fit is formed, the second shaft sleeve 12 axially reciprocates relative to the first shaft sleeve 11 along the sliding pair 18, and the second shaft sleeve 12 is guided and limited by the sliding rod 2 and the sliding groove 16 in the axial movement process.
The limiting block 10 is fixedly connected with the inner wall of the shell 9 and is adjacent to the end cover on one side of the shell and the oil seal 6 in the end cover, the shape and the size of the limiting block 10 are suitable for fixing the first shaft sleeve 11, the axial movement of the second shaft sleeve 12 cannot be hindered, and meanwhile, the limiting block 10 is located in the space among the first shaft sleeve 11, the end cover and the oil seal, and enough axial space is reserved for the axial movement of the second shaft sleeve 12. The oil outlet 7 and the oil inlet 1 which are positioned at the two ends of the shell 9 are respectively adjacent to the two ends of the spiral gap 13, and the oil outlet 7 and the oil inlet 1 cannot be closed by the movement of the second shaft sleeve 12, namely, the oil outlet 7 and the oil inlet 1 are always communicated with adjacent inner cavities among the end parts of the shell 9, the end cover, the oil seal and the first shaft sleeve 11.
The engine oil enters from the oil inlet 1, then flows into the inner cavity of the shell 9, passes through a gap between the turbine shaft 8 and a rotating matching surface between the first shaft sleeve 11 and the second shaft sleeve 12, and then flows out from the oil outlet 7 at the other end. The stepping motor 5 continuously drives the screw rod 3 to rotate forwards and backwards through forward and reverse rotation, the thread on the screw rod 3 drives the second shaft sleeve 12 to reciprocate through the thread groove, and the spiral gap 13 between the second shaft sleeve 12 and the first shaft sleeve 11 changes between the maximum value and zero. When the spiral gap 13 is not zero, a part of engine oil entering the inner cavity of the housing flows to the oil outlet 7 through the spiral gap 13, when the turbine shaft 8 rotates in the first shaft sleeve 11 and the second shaft sleeve 12, when the thickness of the oil film formed on the circumferential outer side wall of the turbine shaft 8 passes through the engine oil channel formed by the spiral gap 13, the oil in the engine oil channel changes due to the flowing of the oil, meanwhile, the oil in the oil film and the oil in the engine oil channel are subjected to convection, the flowing of the oil in the oil film on the outer side wall of the turbine shaft 8 is promoted, the thickness and the pressure of the oil film are changed constantly, and therefore oil sludge is not easy to form on the circumferential outer side wall of the turbine shaft 8. By using the engine oil with a faster flow rate in the engine oil channel, the fluidity of the oil film on the whole circumferential outer side wall of the turbine shaft 8 is enhanced, which is beneficial to keeping the surface of the whole circumferential outer side wall of the turbine shaft 8 clean.
When the turbocharger is in a high-load working state exceeding a set value, the requirements on the strength and the stability of an oil film on the circumferential outer side wall of the turbine shaft are higher, and the requirements on carbon deposition prevention are exceeded, at the moment, the motor is used for driving the shaft sleeve II 12 to move, the spiral gap 13 is eliminated, the gap is enabled to become zero, and therefore engine oil flowing into the inner cavity of the shell 9 can reach the oil outlet 7 at the other end only through the gap between the turbine shaft 8 and the rotating matching surfaces of the shaft sleeve I11 and the shaft sleeve II 12, the strength, the thickness and the stability of the oil films between the turbine shaft 8 and the shaft sleeve I11 and the shaft sleeve II 12 meet the required requirements, and the high-load working state of the turbocharger is guaranteed.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811454762.3A CN109372597B (en) | 2018-11-30 | 2018-11-30 | Adjustable turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811454762.3A CN109372597B (en) | 2018-11-30 | 2018-11-30 | Adjustable turbocharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109372597A CN109372597A (en) | 2019-02-22 |
| CN109372597B true CN109372597B (en) | 2021-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811454762.3A Active CN109372597B (en) | 2018-11-30 | 2018-11-30 | Adjustable turbocharger |
Country Status (1)
| Country | Link |
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| CN (1) | CN109372597B (en) |
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| CN109372597A (en) | 2019-02-22 |
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