CN118407932B - Press shell structure for turbocharger - Google Patents
Press shell structure for turbocharger Download PDFInfo
- Publication number
- CN118407932B CN118407932B CN202410826379.5A CN202410826379A CN118407932B CN 118407932 B CN118407932 B CN 118407932B CN 202410826379 A CN202410826379 A CN 202410826379A CN 118407932 B CN118407932 B CN 118407932B
- Authority
- CN
- China
- Prior art keywords
- shell
- main body
- upper cover
- oil
- pressing
- 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
- 238000003825 pressing Methods 0.000 claims abstract description 42
- 238000007789 sealing Methods 0.000 claims abstract description 38
- 239000003921 oil Substances 0.000 claims description 42
- 239000010687 lubricating oil Substances 0.000 claims description 27
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 5
- 238000005461 lubrication Methods 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
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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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- 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
-
- 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
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Supercharger (AREA)
Abstract
The pressure shell structure for the turbocharger comprises a turbocharger main body, wherein a rotating shaft and a matched impeller are arranged in the turbocharger main body, the turbocharger main body further comprises a pressure shell structure, and the pressure shell structure comprises a pressure shell main body and a pressure shell upper cover; an air cavity is arranged in the pressure shell main body, a rotating shaft mounting seat is arranged in the air cavity, and the rotating shaft mounting seat is kept connected with the inner wall of the air cavity through at least three supporting cantilevers; the rotating shaft mounting seat is internally provided with a hollow insert for mounting the rotating shaft; the upper cover of the pressing shell is arranged on one side of the pressing shell main body through a screw-free sealing assembly structure, and an oil cavity is formed after the upper cover of the pressing shell is arranged. In the pressure shell structure, the self-adaptive lubrication and cooling throttling system is integrated, the pressure shell and the pressure shell upper cover are assembled in a screwless mode, the whole structure is compact and reasonable in design, the working stability is good, the environmental adaptability is strong, and the whole reliability is high.
Description
Technical Field
The invention belongs to the technical field of turbochargers, and particularly relates to a shell pressing structure for a turbocharger.
Background
Turbochargers are an important component of current automotive engine systems that enable more air to enter the cylinders for more fully mixed combustion with fuel, significantly boosting engine power and torque, and also contributing to improved fuel economy and reduced emissions.
The traditional turbocharger shell pressing function is single, the main function is compressed air collection and guide, and the structure is relatively simple. For turbochargers with integrated lubrication structures, the pressure shell has the functions of supporting the rotor, storing lubricating oil, fixing the nozzle ring and installing the whole machine besides collecting and guiding compressed air into the engine. The highly integrated pressure shell design greatly compresses the volume of the supercharger, and has the advantages of small volume, light weight, compact structure and contribution to engine integration. At the same time, great challenges are presented to system stability, environmental flexibility and reliability.
Based on the above, the application further optimizes and improves the pressure shell structure design in the prior art of the integrated lubrication turbocharger.
Disclosure of Invention
Aiming at the challenges in the prior art, the invention provides a pressing shell structure for a turbocharger, which adopts a cantilever front end mounting structure to assemble a rotor system, greatly reduces the volume of the turbocharger, integrates a self-adaptive lubrication and cooling throttling system, realizes assembly between a pressing shell and a pressing shell upper cover in a screwless manner, has compact and reasonable overall structural design, good working stability, strong environmental adaptability and high overall reliability.
The invention is solved by the following technical scheme.
The pressure shell structure for the turbocharger comprises a turbocharger main body, wherein a rotating shaft and a matched impeller are arranged in the turbocharger main body, the turbocharger main body further comprises a pressure shell structure, and the pressure shell structure comprises a pressure shell main body and a pressure shell upper cover; an air cavity is arranged in the pressure shell main body, a rotating shaft mounting seat is arranged in the air cavity, and the rotating shaft mounting seat is kept connected with the inner wall of the air cavity through at least three supporting cantilevers; the rotating shaft mounting seat is internally provided with a hollow insert for mounting the rotating shaft; the upper cover of the pressing shell is arranged on one side of the pressing shell main body through a screw-free sealing assembly structure, and an oil cavity is formed after the upper cover of the pressing shell is arranged; an air inlet communicated with the air cavity is formed in the upper cover of the pressing shell; at least one supporting cantilever is provided with an oil through hole, one end of the oil through hole is communicated with the oil cavity, and the other end of the oil through hole is communicated with the lubricating oil hole on the insert.
In the shell pressing structure, a cantilever type rotating shaft mounting structure is adopted, so that the whole structure is more compact and the volume is small. In the rotating process of the rotating shaft, lubricating oil in the oil cavity can enter the lubricating oil hole through the oil through hole, and a good lubricating effect is achieved on the rotating shaft and the bearing structure in the insert. Meanwhile, the screw-free sealing assembly structure is adopted between the upper cover of the pressing shell and the pressing shell main body while the sealing performance is ensured, and the screw-free sealing assembly structure is simple in assembly structure, good in sealing performance and high in strength.
In a preferred embodiment, the seal assembly structure comprises an inner assembly convex edge and an outer assembly convex edge which are arranged on the upper cover of the press shell and extend towards the main body of the press shell, and also comprises an inner assembly table and an outer assembly table which are arranged on the main body of the press shell and extend towards the upper cover of the press shell; the inner assembly convex edge is assembled with the inner assembly table and is sealed by a first sealing ring; the outer assembly flange is assembled with the outer assembly table and is sealed through the second sealing ring, the inner side and the outer side of the second sealing ring are respectively clamped on the first groove on the outer assembly table and the second groove on the outer assembly flange, the limiting function in the axial direction is realized, the outer assembly flange is not easy to deviate from, and the good sealing and assembly connection functions are achieved.
In a preferred embodiment, a gap is formed between the outer assembly flange and the outer assembly table, so that assembly is facilitated, and a guide inclined surface is arranged on the outer side of the outer assembly flange and used for guiding insertion during assembly.
In a preferred embodiment, the width of the gap is a, the depth of the first groove is 8 a-9 a, the depth of the second groove is 1.1 a-1.2 a, and the sealing capability and the anti-falling capability after the structure is assembled are best, and the structure is simple.
In a preferred embodiment, the second sealing ring has a radial compression of 15% -23% when in the assembled position, and the assembled sealing capability and the anti-falling capability are good.
In a preferred embodiment, an oil return inclined plane is arranged on the edge opening of the outer assembly table, so that oil can fall back into the oil cavity, and the risk of lubricating oil leakage is effectively avoided.
In a preferred embodiment, a plurality of groove structures 68 are arranged on the outer surface of the tail end of the insert 6, which plays a role in throttling, and the lubricating oil quantity and the cooling air quantity of the bearing cavity are adaptively adjusted along with the change of the working rotating speed of the supercharger.
In a preferred embodiment, a wick is disposed in the oil passage for guiding the wetting flow of lubricating oil from the oil chamber to the lubricating oil hole.
In a preferred embodiment, the insert is a stainless steel insert, the stainless steel insert is put into a reserved position of a shell-pressing casting die in advance when the shell-pressing main body is cast, the insert position is fixed after the die is closed, and the stainless steel insert and the shell-pressing are integrated after aluminum water injection is solidified, so that the structure strength is high.
In a preferred embodiment, the upper cover of the pressure shell is provided with an oil filling hole for adding lubricating oil, and is also provided with a pressure balancing hole, and the pressure balancing hole is provided with a ventilation valve for keeping the air pressure in the oil cavity consistent with the atmospheric pressure of the external environment.
Compared with the prior art, the invention has the following beneficial effects: the utility model provides a press shell structure for turbo charger has adopted cantilever front end mounting structure to assemble the pivot, has reduced the volume of booster greatly, and integrated self-adaptation is lubricated and cooling throttling system, and realizes the assembly through screwless mode between press shell and the press shell upper cover, and overall structure design is compact, reasonable, and job stabilization nature is good, and environmental suitability is strong, and overall reliability is high.
Drawings
Fig. 1 is a perspective view of a press shell structure in the present invention.
Fig. 2 is a second perspective view of the press shell structure in the present invention.
Fig. 3 is a schematic view of a press shell structure in the present invention.
Fig. 4 is a cross-sectional view of the press shell structure of the present invention.
Fig. 5 is an enlarged view of area a in fig. 4.
Fig. 6 is an enlarged view of the second seal ring at the assembled structure.
Fig. 7 is a second cross-sectional view of the press shell structure in the present invention.
Fig. 8 is a perspective view of the press case upper cover in the present invention.
Fig. 9 is a perspective view of a press case structure of the present invention omitting a press case upper cover.
Fig. 10 is a perspective view of an insert and sleeve of the present invention.
Fig. 11 is an enlarged view of the end structure of the insert of the present invention after assembly.
Detailed Description
The invention is described in further detail below with reference to the drawings and the detailed description.
In the following embodiments, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout, and the embodiments described below by referring to the drawings are exemplary only for explaining the present invention and are not to be construed as limiting the present invention.
In the description of the present application, it is to be understood that the terms: the directions of the center, the longitudinal, the lateral, the length, the width, the thickness, the upper, the lower, the front, the rear, the left, the right, the vertical, the horizontal, the top, the bottom, the inner, the outer, the clockwise, the counterclockwise, etc. indicate the directions or the positional relationship based on the directions or the positional relationship shown in the drawings, are merely for convenience of description and simplification of the description, and therefore, should not be construed as limiting the present application. Furthermore, the term: first, second, etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features shown. In the description of the present application, unless explicitly specified and defined otherwise, the terms: mounting, connecting, etc. are to be construed broadly and the specific meaning of the terms described above in the present application will be understood by those skilled in the art in light of the specific circumstances.
Referring to fig. 1 to 11, a press shell structure for a turbocharger in the present application includes a turbocharger main body in which a rotating shaft and a matched impeller are provided, and a press shell structure including a press shell main body 2 and a press shell upper cover 1; an air cavity is arranged in the pressure shell main body 2, a rotating shaft mounting seat is arranged in the air cavity, and the rotating shaft mounting seat is kept connected with the inner wall of the air cavity through at least three supporting cantilevers 7; the rotating shaft mounting seat is internally provided with a hollow insert 6 for mounting the rotating shaft; the upper cover 1 of the pressing shell is arranged on one side of the main body 2 of the pressing shell through a screwless sealing assembly structure, and an oil cavity 12 is formed after the installation; an air inlet 4 communicated with the air cavity is arranged on the pressure shell upper cover 1; at least one supporting cantilever 7 is provided with an oil through hole 71, one end of the oil through hole 71 is communicated with the oil cavity 12, and the other end is communicated with the lubricating oil hole 61 on the insert 6. In a preferred embodiment, the oil through hole 71 is provided therein with a wick for guiding the infiltration flow of the lubricating oil from the oil chamber 12 into the lubricating oil hole 61. The upper cover 1 of the pressure shell is provided with an oil filling hole 111 for adding lubricating oil, and is also provided with an air pressure balancing hole 112, and an air permeable valve is arranged on the air pressure balancing hole and is used for keeping the air pressure in the oil cavity consistent with the atmospheric pressure of the external environment.
In addition, in the application, the insert 6 is a stainless steel insert, the stainless steel insert is put into a reserved position of a shell pressing casting die in advance when the shell pressing main body 2 is cast, the insert position is fixed after the die is closed, and the stainless steel insert and the shell pressing are integrated after aluminum water injection is solidified, so that the structure strength is high.
Specifically, in the present application, the seal assembly structure includes an inner assembly flange 16 and an outer assembly flange 15 that are disposed on the upper cover 1 of the press shell and extend toward the main body 2 of the press shell, and further includes an inner assembly stand 26 and an outer assembly stand 25 that are disposed on the main body 2 of the press shell and extend toward the upper cover 1 of the press shell; the inner assembly flange 16 is assembled with the inner assembly table 26 and sealed by a first seal ring 91; the outer assembly flange 15 is assembled with the outer assembly platform 25 and is sealed through the second sealing ring 9, the inner side and the outer side of the second sealing ring 9 are respectively clamped on the first groove 251 on the outer assembly platform 25 and the second groove 151 on the outer assembly flange 15, the axial limiting function is realized, the separation is not easy, and the good sealing and assembly connection functions are achieved.
In addition, as can be seen from fig. 6, in the present application, a gap is formed between the outer assembly flange 15 and the outer assembly stand 25, so that assembly is facilitated, and a guiding inclined surface 152 is provided on the outer side of the outer assembly flange 15, for guiding insertion during assembly, and a flat surface section 155 is provided between the guiding inclined surface 152 and the second groove 151. In a further preferred embodiment, the width of the gap is a, the depth of the first groove 251 is 8 a-9 a, the depth of the second groove 151 is 1.1 a-1.2 a, and the sealing capability and the anti-falling capability after the structure is assembled are the best, and the structure is simple. When the second sealing ring 9 is positioned at the assembly position, the radial compression amount of the second sealing ring 9 is 15-23%, and the assembled sealing capacity and the anti-falling capacity are good.
Further, in the present application, an oil return slope 255 is provided on the edge of the outer assembly table 25, so as to enable the oil to fall back into the oil chamber 12. Specifically, referring to fig. 4, fig. 5, and fig. 6, the upper cover 1 of the pressing shell is located at the left side, and is disposed upward in actual use, that is, the upper cover 1 of the pressing shell faces upward, so that the lubricating oil on the inner wall can return to the oil cavity 12 along the oil return inclined plane 255 in the working process.
In the present application, a plurality of protruding heat dissipation ribs 29 are also distributed on the outer surface of the press case main body 2 for heat dissipation. In addition, a plurality of groove structures 68 are arranged on the outer surface of the tail end of the insert 6, and the lubricating oil quantity and the cooling gas quantity of the bearing cavity are adaptively adjusted along with the change of the working rotating speed of the supercharger. Specifically, referring to fig. 11, in the actual working process, the impeller 95 rotates at a high speed, a negative pressure is generated at the inlet, the negative pressure enables the lubricating oil in the oil cavity 12 to enter the insert 6 through the lubricating oil hole 61 to lubricate the shafting bearing structure therein, the groove structure 68 is arranged in the application, a throttle structure is formed with the inlet of the impeller, a high-pressure air film is established when the impeller rotates at a high speed, the flow resistance of lubricating oil gas is regulated, and the air film pressure changes along with the change of the impeller rotation speed, so that the lubricating oil quantity and the cooling air quantity of the bearing cavity can be adaptively regulated.
In the application, the inside of the pressing shell main body 2 is also provided with a sleeve body 5 for forming a gas flow passage. The sleeve body 5 can be assembled on the press shell main body 2 in an interference fit manner, and can also be of an integral structure of the press shell main body 2.
The rotating shaft bearings of the conventional supercharger are all of intermediate bearing, so that the conventional supercharger is provided with bearing bodies and mainly used for installing the bearings to support the rotation of the rotating shaft; the turbocharger corresponding to the pressing shell has the advantages that the rotating shaft is in unilateral bearing, namely the bearing supporting part is arranged at the impeller side, and the bearing structure has the advantage that the whole structure of the turbocharger is compact; the bearing structure and the press shell are cast into an integral structure, and are positioned in an air inlet channel of the press shell, and are connected with a main body of the press shell into a whole through three supporting cantilevers 7; the bearing part is embedded into the stainless steel insert, so that deformation caused by insufficient strength of the aluminum material in the use process is avoided, and the supercharger is prevented from being damaged; the lubrication of the bearing uses the lubricating oil stored in the oil cavity of the pressing shell, and the lubricating oil is respectively conveyed to two bearing mounting positions on the insert in the bearing seat through two through holes in the rib plate for supporting the bearing seat under the action of the oil rope to lubricate the rotating shaft bearing. The pressure shell oil cavity is provided with a ventilation valve, the pressure is consistent with the atmospheric pressure, the pressure shell bearing seat is connected with the air inlet channel, the pressure and the air inlet channel are negative, and lubricating oil is slowly sucked into the bearing seat under the siphon action of the pressure and the wick.
Therefore, compared with the traditional supercharger, the shafting support bearing is placed in the pressure shell channel, and a special bearing body is not needed to fix the floating bearing, so that the size of the whole shafting is greatly reduced. In addition, in the application, the second sealing ring 9 can be an O-shaped ring, has the sealing property while being firmly connected, and does not need to be added with sealing parts independently; the O-shaped ring connection mode has the advantages of simplified part structure, reduced overall size and weight, and convenience for arrangement of the whole power system.
As can be seen from the above description, in the press shell structure of the present application, the cantilever type rotating shaft mounting structure is adopted, so that the whole structure is more compact and the volume is small. In the rotating process of the rotating shaft, lubricating oil in the oil cavity 12 can enter the lubricating oil hole 61 through the oil through hole 71, and a good lubricating effect is achieved on the rotating shaft and the bearing structure in the insert 6. Meanwhile, the screw-free sealing assembly structure is adopted between the pressing shell upper cover 1 and the pressing shell main body 2 while the sealing performance is ensured, and the screw-free sealing assembly structure is simple in assembly structure, good in sealing performance and high in strength.
As described above, the press case structure of the present application has the following advantages.
(1) Bearing frame, oil storage chamber have integrated in the shell structure of pressing, and lubricating oil can self-lubricate, compact structure, integrated level high lubricating oil storage function.
(2) The bearing assembly position adopts a stainless steel insert, and the strength of the bearing assembly position of the pressure shell is increased.
(3) The supercharger shafting support position moves to the inside of the press shell, and compared with the traditional scheme, the whole supercharger has the advantages of reduced size and weight due to the fact that the bearing body is removed.
(4) The second sealing ring 9, namely the arrangement of the O-shaped ring, has better sealing effect when the compression amount of the O-shaped ring is about 20%, and the compression amount of the O-shaped ring is 20% at the positions of the first groove and the second groove. During the O-ring installation process, the compression ratio varies from stage to stage: the O-shaped ring is firstly arranged in the first groove 251, then is assembled, the compression amount of the O-shaped ring gradually increases from zero compression amount to more than 25% in the process of guiding the inclined plane section to the plane section, then the O-shaped ring enters the first groove, and the compression amount of the O-shaped ring is about 20%; in this state, if the pressing shell main body 2 and the pressing shell upper cover 1 want to be separated, the pressure required by deformation of the O-shaped ring needs to be overcome, and the frictional force generated by the fact that the right-angle edge of the positioning groove is propped against the O-shaped ring when the pressing shell upper cover 1 is separated is large because of no guide angle, the pressing shell upper cover 1 cannot rotate freely because the O-shaped ring is in a compression deformation state in the normal use process. Therefore, when the installation is completed, the O-shaped ring has the functions of sealing and connecting.
The scope of the present invention includes, but is not limited to, the above embodiments, and any alterations, modifications, and improvements made by those skilled in the art are intended to fall within the scope of the invention.
Claims (4)
1. A press shell structure for a turbocharger, characterized in that:
The press shell structure comprises a press shell main body (2) and a press shell upper cover (1);
An air cavity is arranged in the pressure shell main body (2), a rotating shaft mounting seat is arranged in the air cavity, and the rotating shaft mounting seat is kept connected with the inner wall of the air cavity through at least three supporting cantilevers (7); the rotating shaft mounting seat is internally provided with a hollow insert (6) for mounting the rotating shaft;
The upper cover (1) of the pressing shell is arranged on one side of the main body (2) of the pressing shell through a screwless sealing assembly structure, and an oil cavity (12) is formed after the upper cover is arranged; an air inlet (4) communicated with the air cavity is arranged on the pressure shell upper cover (1);
at least one supporting cantilever (7) is internally provided with an oil through hole (71), one end of the oil through hole (71) is communicated with the oil cavity (12), and the other end of the oil through hole is communicated with a lubricating oil hole (61) on the insert (6);
The sealing assembly structure comprises an inner assembly convex edge (16) and an outer assembly convex edge (15) which are arranged on the press shell upper cover (1) and extend towards the press shell main body (2), and also comprises an inner assembly table (26) and an outer assembly table (25) which are arranged on the press shell main body (2) and extend towards the press shell upper cover (1);
The inner assembly flange (16) is assembled with the inner assembly table (26) and is sealed by a first sealing ring (91);
the outer assembly convex edge (15) is assembled with the outer assembly table (25) and is sealed by the second sealing ring (9), the inner side and the outer side of the second sealing ring (9) are respectively clamped on a first groove (251) on the outer assembly table (25) and a second groove (151) on the outer assembly convex edge (15), and the limiting function in the axial direction is realized;
a gap is formed between the outer assembly convex edge (15) and the outer assembly table (25), and a guide inclined plane (152) is arranged on the outer side of the outer assembly convex edge (15);
the width of the gap is a, the depth of the first groove (251) is 8 a-9 a, and the depth of the second groove (151) is 1.1 a-1.2 a;
When the second sealing ring (9) is positioned at the assembling position, the radial compression amount of the second sealing ring is 15% -23%;
a plurality of groove structures (68) are arranged on the outer surface of the tail end of the insert (6);
The insert (6) is a stainless steel insert, the stainless steel insert is put into a reserved position of a shell pressing casting die in advance when the shell pressing main body (2) is cast, the insert position is fixed after the die is closed, and the stainless steel insert and the shell pressing are integrated after molten aluminum is injected and solidified.
2. The shell pressing structure for the turbocharger as claimed in claim 1, wherein an oil return inclined surface (255) is arranged on the edge of the outer assembly table (25); a plurality of protruding radiating ribs (29) are distributed on the outer surface of the pressing shell main body (2).
3. A press-shell structure for a turbocharger according to any one of claims 1 to 2, characterized in that a wick is provided in the oil passage hole (71).
4. A casing structure for a turbocharger according to any one of claims 1 to 2, wherein the casing upper cover (1) is provided with an oil filling hole (111) and a gas pressure balance hole (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410826379.5A CN118407932B (en) | 2024-06-25 | 2024-06-25 | Press shell structure for turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410826379.5A CN118407932B (en) | 2024-06-25 | 2024-06-25 | Press shell structure for turbocharger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN118407932A CN118407932A (en) | 2024-07-30 |
| CN118407932B true CN118407932B (en) | 2024-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410826379.5A Active CN118407932B (en) | 2024-06-25 | 2024-06-25 | Press shell structure for turbocharger |
Country Status (1)
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| CN (1) | CN118407932B (en) |
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| CN117345682A (en) * | 2023-11-27 | 2024-01-05 | 潍坊科技学院 | A cantilever-type integrated micro-oil high-speed bearing device and control method for a supercharger |
| CN118045976B (en) * | 2024-01-02 | 2024-11-22 | 西安西开精密铸造有限责任公司 | A mold for casting steel pipe insert of aluminum alloy casting and molding method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113027787A (en) * | 2021-04-02 | 2021-06-25 | 湖南天雁机械有限责任公司 | Shafting structure of self-lubricating turbocharger ball bearing |
| CN116464656A (en) * | 2023-05-19 | 2023-07-21 | 宁波威孚天力增压技术股份有限公司 | High-performance electric supercharger |
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