CN219953458U - Turbine shell waste gas bypass supercharging structure - Google Patents
Turbine shell waste gas bypass supercharging structure Download PDFInfo
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- CN219953458U CN219953458U CN202321336167.6U CN202321336167U CN219953458U CN 219953458 U CN219953458 U CN 219953458U CN 202321336167 U CN202321336167 U CN 202321336167U CN 219953458 U CN219953458 U CN 219953458U
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- 239000002912 waste gas Substances 0.000 title claims abstract description 8
- 239000007789 gas Substances 0.000 abstract description 19
- 206010016256 fatigue Diseases 0.000 abstract description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a turbine shell waste gas bypass supercharging structure, which comprises a turbine shell and a bypass valve, wherein the turbine shell is provided with the bypass valve, a vortex-shaped flow passage and a cavity are arranged in the turbine shell, the vortex-shaped flow passage comprises a first air passage and a second air passage, and one end of the first air passage and one end of the second air passage are communicated with the vortex-shaped flow passage; the turbine shell is provided with a first bypass channel and a second bypass channel, one end of the first bypass channel is communicated with the first air channel, and one end of the second bypass channel is communicated with the second air channel. The utility model reduces the unbalance amount of the valve plate when the valve plate receives the gas impact after the bypass valve is opened, improves the safety of the bypass valve and the turbine shell, and prolongs the service life; the temperature distribution of the bypass channel and the valve plate surface is more uniform, so that the thermal fatigue risk of the turbine shell is reduced; the utility model has simple structure, ingenious design and high practicability.
Description
Technical Field
The utility model belongs to the technical field of turbine shells of engines, and relates to a turbine shell waste gas bypass supercharging structure.
Background
The turbine shell and the pneumatic performance of the turbocharger are an important part of turbine research, when the engine is in a high-speed and high-load state, in order to avoid overspeed of the turbocharger, the turbine shell bypass valve is usually used for exhausting gas to release part of gas, and the exhausted gas directly reaches the outlet of the turbine shell through the bypass channel and does not pass through the left-hand work of the turbine, so that the supercharging pressure and the rotating speed of the turbocharger are controlled within a designed safety range;
however, in the prior art, the turbine housing with double gas-proof channels is characterized in that engine exhaust is led out from a main flow channel of the turbine housing through two independent channels, and gas is discharged out of the turbine housing after a bypass valve is opened; along with the operation of engine and booster, the pressure of booster entry is the pulse form of stirring, because the incomplete symmetry of two bypass channels, after the bypass valve block opens, the pressure differential between two air inlet channels still exists, influences the whole combustion efficiency of engine, and simultaneously, the bypass valve block appears the back and forth hunting because of impulse force, causes great impact damage.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art, solve the problem of influence of a bypass structure on the pressure of a turbine shell, and provide a turbine shell waste gas bypass supercharging structure.
In order to achieve the above purpose, the following technical scheme is adopted:
the turbine shell waste gas bypass supercharging structure comprises a turbine shell and a bypass valve, wherein the bypass valve is arranged on the turbine shell, a vortex-shaped flow passage and a cavity are arranged in the turbine shell, the vortex-shaped flow passage comprises a first air passage and a second air passage, and one end of the first air passage and one end of the second air passage are communicated with the vortex-shaped flow passage; the turbine shell is provided with a first bypass channel and a second bypass channel, one end of the first bypass channel is communicated with the first air channel, and one end of the second bypass channel is communicated with the second air channel; and the turbine shell is provided with an air hole, one end of the first bypass channel and one end of the second bypass channel are communicated with the air hole, and the air hole can be matched with the bypass valve.
Preferably, the cross section of the communication part of the first bypass channel and the second bypass channel and the air hole is in a Y shape.
Preferably, the bypass valve comprises a rocker shaft, a valve plate and a connecting piece, wherein a mounting hole is formed in the side wall of the cavity, the rocker shaft is mounted in the mounting hole, a connecting plate is arranged on the rocker shaft, the valve plate is arranged on the connecting plate, and the connecting plate is connected with the valve plate through the connecting piece.
Preferably, the vortex flow channel comprises a first flow channel and a second flow channel, one end of the first air channel is communicated with the first flow channel, and one end of the second air channel is communicated with the second flow channel.
Preferably, a boss is arranged on the inner side of the cavity, and the air hole is formed in the boss.
Compared with the prior art, the utility model has the following advantages:
the utility model reduces the unbalance amount of the valve plate when the valve plate is impacted by gas after the bypass valve is opened, improves the safety of the bypass valve and the turbine shell, and prolongs the service life; the high-temperature gas enters the air holes from the first bypass channel and the second bypass channel, and the high-temperature gas is returned in advance, so that the temperature distribution of the surfaces of the bypass channel and the valve plate is more uniform, and the thermal fatigue risk of the turbine shell is reduced; the utility model has simple structure, ingenious design and high practicability.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
FIG. 2 is a schematic cross-sectional view of a turbine shell of the present utility model.
FIG. 3 is a schematic view of the turbine shell structure of the present utility model.
In the figure: 1. a turbine housing; 2. a bypass valve; 3. a vortex-like flow path; 4. a cavity; 5. a first airway; 6. a second airway; 7. a first bypass passage; 8. a second bypass passage; 9. air holes; 10. a rocker shaft; 11. a valve plate; 12. a connecting piece; 13. a mounting hole; 14. a boss; 15. a connecting plate; 16. a first flow passage; 17. and a second flow passage.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
As shown in fig. 1-3, a turbine shell waste gas bypass supercharging structure comprises a turbine shell 1 and a bypass valve 2, wherein the turbine shell 1 is provided with the bypass valve 2, and the bypass valve 2 is used for avoiding overspeed of a supercharger;
a vortex-shaped flow passage 3 and a cavity 4 are arranged in the turbine shell 1, and the vortex-shaped flow passage 3 and the cavity 4 are used for gas circulation;
the vortex flow channel 3 comprises a first air channel 5 and a second air channel 6, and one end of the first air channel 5 and one end of the second air channel 6 are communicated with the vortex flow channel 3; gas can enter the vortex flow channel 3 through the first gas channel 5 and the second gas channel 6 so as to drive the turbine in the turbine shell 1 to rotate;
a first bypass channel 7 and a second bypass channel 8 are formed in the turbine shell 1, one end of the first bypass channel 7 is communicated with the first gas channel 5, and gas can enter the first bypass channel 7 from the first gas channel 5;
one end of the second bypass channel 8 is communicated with the second air channel 6, and gas can enter the second bypass channel 8 from the second air channel 6;
the turbine shell 1 is provided with an air hole 9, one end of the first bypass channel 7 and one end of the second bypass channel 8 are communicated with the air hole 9, and gas in the first bypass channel 7 and gas in the second bypass channel 8 can flow out of the air hole 9;
the air hole 9 can be matched with the bypass valve 2, and the bypass valve 2 can control the opening and closing of the air hole 9.
Further, the cross section of the communication part of the first bypass channel 7 and the second bypass channel 8 and the air hole 9 is in a Y shape, the air hole is the lower end of Y, the parts of the first bypass channel 7 and the second bypass channel 8 are the upper end of Y, the end parts of the first bypass channel 7 and the second bypass channel 8 are communicated at the air hole 9, and the unbalance amount when the bypass valve 2 receives gas impact is reduced.
Further, the bypass valve 2 comprises a rocker shaft 10, a valve plate 11 and a connecting piece 12, a mounting hole 13 is formed in the side wall of the cavity 4, the rocker shaft 10 is mounted in the mounting hole 13, a connecting plate 15 is arranged on the rocker shaft 10, the valve plate 11 is arranged on the connecting plate 15, and the valve plate 11 can cover the air hole 9 so as to realize the control function of the bypass valve 2 on opening and closing the air hole; the connecting plate 15 is connected with the valve plate 11 by a connecting piece 12, and when the connecting plate 15 swings, the valve plate 11 swings along with the connecting plate, namely, when the rocker shaft 10 rotates, the valve plate 11 moves.
Further, the vortex flow channel 3 includes a first flow channel 16 and a second flow channel 17, one end of the first air channel 5 is communicated with the first flow channel 16, and one end of the second air channel 6 is communicated with the second flow channel 17.
Further, a boss 14 is provided on the inner side of the cavity 4, the air hole 9 is provided on the boss 14, and the end surface of the air hole 9 has a certain inclination angle so as to be matched with the valve plate 11.
Working principle: when the utility model is used, the first bypass channel 7 and the second bypass channel 8 are respectively arranged on the first air channel 5 and the second air channel 6, and the first bypass channel 7 and the second bypass channel 8 are respectively communicated with the air hole 9, so that after the air flows out of the first bypass channel 7 and the second bypass channel 8, the air reaches the inside of the air hole 9, and then the impact on the valve plate 11 is caused, so that the effect of reducing the impact unbalance of the air on the valve plate 11 is achieved.
It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.
Claims (5)
1. The utility model provides a turbine shell waste gas bypass supercharging structure, includes turbine shell (1) and bypass valve (2), characterized by: the turbine shell (1) is provided with a bypass valve (2), a vortex-shaped flow passage (3) and a cavity (4) are arranged in the turbine shell (1), the vortex-shaped flow passage (3) comprises a first air passage (5) and a second air passage (6), and one end of the first air passage (5) and one end of the second air passage (6) are communicated with the vortex-shaped flow passage (3); a first bypass channel (7) and a second bypass channel (8) are formed in the turbine shell (1), one end of the first bypass channel (7) is communicated with the first air channel (5), and one end of the second bypass channel (8) is communicated with the second air channel (6); an air hole (9) is formed in the turbine shell (1), one end of the first bypass channel (7) and one end of the second bypass channel (8) are communicated with the air hole (9), and the air hole (9) can be matched with the bypass valve (2).
2. The turbine housing wastegate supercharging structure of claim 1, wherein: the section of the communication part of the first bypass channel (7) and the second bypass channel (8) and the air hole (9) is in a Y shape as a whole.
3. The turbine housing wastegate supercharging structure of claim 1, wherein: the bypass valve (2) comprises a rocker shaft (10), a valve plate (11) and a connecting piece (12), wherein a mounting hole (13) is formed in the side wall of the cavity (4), the rocker shaft (10) is mounted in the mounting hole (13), a connecting plate (15) is arranged on the rocker shaft (10), the valve plate (11) is arranged on the connecting plate (15), and the connecting plate (15) is connected with the valve plate (11) through the connecting piece (12).
4. The turbine housing wastegate supercharging structure of claim 1, wherein: the vortex-shaped flow passage (3) comprises a first flow passage (16) and a second flow passage (17), one end of the first air passage (5) is communicated with the first flow passage (16), and one end of the second air passage (6) is communicated with the second flow passage (17).
5. The turbine housing wastegate supercharging structure of claim 1, wherein: a boss (14) is arranged on the inner side of the cavity (4), and the air hole (9) is formed in the boss (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321336167.6U CN219953458U (en) | 2023-05-29 | 2023-05-29 | Turbine shell waste gas bypass supercharging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321336167.6U CN219953458U (en) | 2023-05-29 | 2023-05-29 | Turbine shell waste gas bypass supercharging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953458U true CN219953458U (en) | 2023-11-03 |
Family
ID=88553710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321336167.6U Active CN219953458U (en) | 2023-05-29 | 2023-05-29 | Turbine shell waste gas bypass supercharging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219953458U (en) |
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2023
- 2023-05-29 CN CN202321336167.6U patent/CN219953458U/en active Active
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