CN215862258U - Mixed flow turbocharger gas exhaust pipe structure - Google Patents
Mixed flow turbocharger gas exhaust pipe structure Download PDFInfo
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- CN215862258U CN215862258U CN202122448439.9U CN202122448439U CN215862258U CN 215862258 U CN215862258 U CN 215862258U CN 202122448439 U CN202122448439 U CN 202122448439U CN 215862258 U CN215862258 U CN 215862258U
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- expansion joint
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- corrugated expansion
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Abstract
The utility model relates to the technical field of mechanical manufacturing, in particular to a mixed flow turbocharger gas exhaust pipe structure which comprises a flange, a guide cylinder, a corrugated expansion joint and an exhaust bent pipe, wherein the flange is connected with one end of the corrugated expansion joint, the exhaust bent pipe is connected with the other end of the corrugated expansion joint, the guide cylinder is connected with the flange, the corrugated expansion joint is sleeved outside the guide cylinder, the inner diameter of the guide cylinder is consistent with the inner diameter of the flange and the inner diameter of the exhaust bent pipe, a gap a is formed between the outer diameter of the guide cylinder and the inner diameter of the corrugated expansion joint, and a gap b is formed between the guide cylinder and the exhaust bent pipe. The axial, transverse and angular displacement of the supercharger unit and the exhaust pipe system of the main engine exhaust gas caused by temperature and pressure fluctuation can be compensated by self, and additional metal corrugated expansion joints are not additionally arranged for compensation. The weight that conventional bellows brought is alleviateed, also reduces manufacturing cost simultaneously for the main engine room inner tube system is more succinct, provides more effective space for the marine engine room.
Description
Technical Field
The utility model relates to the technical field of mechanical manufacturing, in particular to a gas exhaust pipe structure of a mixed flow turbocharger.
Background
The development of the world shipping industry and shipbuilding technology continuously puts new requirements on the performance and technical level of the ship propulsion device. The turbocharger, which is an important part of the marine diesel engine used as a main power device of the ship, is matched with the diesel engine to work together, so that the output power of the diesel engine can be effectively improved.
When the supercharger is installed in the cabin of the ship, the exhaust emission pipe system is made of metal, so that the center of the exhaust pipe is not concentric with the exhaust bent pipe of the supercharger in the field situation, and the supercharger can be matched with the exhaust bent pipe of the supercharger in the small-radius non-concentric rotation mode. In addition, the temperature and pressure fluctuation generated during the operation of the diesel engine can cause the irregular thermal deformation, expansion and contraction and angular displacement of the exhaust pipeline of the main engine, so the utility model provides the mixed flow turbocharger gas exhaust pipe structure.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the prior art, the utility model aims to provide a mixed flow turbocharger gas exhaust pipe structure which can solve the problems in the prior art that when the condition occurs, an additional metal corrugated expansion joint is not needed to be additionally arranged to compensate the axial displacement and the transverse displacement of a pipe system, the possibility of exhaust gas leakage caused by the increase of pipe fittings is avoided, and the internal space of a ship cabin is saved.
The utility model provides a mixed flow turbocharger gas exhaust pipe structure which comprises a flange, a guide cylinder, a corrugated expansion joint and an exhaust bent pipe, wherein the flange is connected with one end of the corrugated expansion joint, the exhaust bent pipe is connected with the other end of the corrugated expansion joint, the guide cylinder is connected with the flange, the corrugated expansion joint is sleeved outside the guide cylinder, the inner diameter of the guide cylinder is consistent with the inner diameter of the flange and the inner diameter of the exhaust bent pipe, a gap a is formed between the outer diameter of the guide cylinder and the inner diameter of the corrugated expansion joint, and a gap b is formed between the guide cylinder and the exhaust bent pipe.
Wherein the joint of the flange and the corrugated expansion joint is provided with a first welding seam.
Wherein the exhaust elbow has a second weld at the junction with the bellows expansion joint.
And a third welding seam is arranged at the joint of the guide shell and the flange.
According to the mixed flow turbocharger gas exhaust pipe structure, due to the existence of the gap a and the gap b, the exhaust elbow still has compensation quantities of axial, transverse and angular displacement in the installation process. The axial, transverse and angular displacement of the supercharger unit and the exhaust pipe system of the main engine exhaust gas caused by temperature and pressure fluctuation can be compensated by self, and additional metal corrugated expansion joints are not additionally arranged for compensation. The weight that conventional bellows brought is alleviateed, also reduces manufacturing cost simultaneously for the main engine room inner tube system is more succinct, provides more effective space for the marine engine room.
Drawings
Fig. 1 is a schematic structural view of a mixed flow turbocharger gas exhaust pipe structure of the utility model.
Fig. 2 is a partial structure enlarged view of a mixed flow turbocharger gas exhaust pipe structure of the utility model.
Fig. 3 is an assembly view of the gas exhaust pipe structure and the supercharger of the present invention.
The method comprises the following steps of 1-flange, 2-guide shell, 3-bellows expansion joint, 4-exhaust elbow, 5-first welding line, 6-third welding line, 7-second welding line, 9-exhaust turbocharger, 10-spring washer and 11-hexagon bolt.
Detailed Description
The utility model is further described with reference to the following figures and embodiments.
In the present embodiment, the terms "upper", "lower", "left", "right", "front", "rear", "upper end", "lower end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, or be operated, and thus, should not be construed as limiting the present invention.
Referring to fig. 1 to 3, the present invention provides a mixed flow turbocharger gas exhaust pipe structure, including a flange, a guide cylinder, a corrugated expansion joint, and an exhaust elbow, wherein the flange is connected to one end of the corrugated expansion joint, the exhaust elbow is connected to the other end of the corrugated expansion joint, the guide cylinder is connected to the flange, the corrugated expansion joint is sleeved outside the guide cylinder, the inner diameter of the guide cylinder is consistent with the inner diameter of the flange and the inner diameter of the exhaust elbow, a gap a is provided between the outer diameter of the guide cylinder and the inner diameter of the corrugated expansion joint, and a gap b is provided between the guide cylinder and the exhaust elbow.
The joint of the flange and the corrugated expansion joint is provided with a first welding seam;
the joint of the exhaust elbow and the corrugated expansion joint is provided with a second welding seam;
and a third welding seam is arranged at the joint of the guide shell and the flange.
In the present embodiment, the mixed flow turbocharger gas exhaust pipe structure is used for connection between a marine exhaust turbocharger and a marine main engine exhaust gas system. After the exhaust gas of marine diesel engine combustion emission passes through the turbine work of booster, behind booster volute, blast pipe in proper order, exhaust duct in the cabin of discharging again, in addition when the installation booster in the marine engine cabin, because the material is the metal between the exhaust emission piping, the site conditions mostly are exhaust pipe center and booster exhaust return bend decentraction, need less radius non-concentric rotation just can cooperate. In addition, irregular thermal deformation, expansion and contraction, angular displacement and the like of the exhaust pipeline of the main engine can be caused due to temperature and pressure fluctuation generated when the diesel engine runs. The mixed flow turbocharger gas exhaust pipe structure adopts the corrugated expansion joint to connect the exhaust elbow and the flange, and the clearance a is reserved between the outer diameter of the guide cylinder and the inner diameter of the corrugated expansion joint; the guide cylinder and the exhaust elbow are retained in the gap b, so that the axial and transverse displacements of the pipe system are compensated without additionally arranging an additional metal corrugated expansion joint, the possibility of waste gas leakage caused by the increase of pipe fittings is avoided, and the internal space of a ship cabin is saved.
In addition, the guide cylinder has the significance of reducing the exhaust of waste gas in the whole exhaust elbow pipe to be disordered due to the unevenness of the inner wall of the corrugated pipe, so that the aim of smooth exhaust is fulfilled.
The inner diameter of the guide cylinder is consistent with the inner diameter of the flange and the inner diameter of the exhaust elbow, and a clearance a is reserved between the outer diameter of the guide cylinder and the inner diameter of the corrugated expansion joint; the guide cylinder and the exhaust elbow are retained by a gap b. The existence of the clearance a and the clearance b enables the exhaust elbow with the new structure to still have compensation amount of axial, transverse and angular displacement during the installation process.
In particular, as shown in fig. 1 and 2, the axial, transverse and angular displacements occurring in the connection of the exhaust-gas turbocharger system to the exhaust line are compensated by the bellows expansion joint throughout the exhaust manifold. Meanwhile, the guide cylinder ensures that the waste gas is smoothly discharged from the exhaust elbow without being influenced by the inner wall of the corrugated pipe. The reserved gaps a and b ensure that the guide shell does not interfere with the axial direction, the transverse direction and the angular displacement of the corrugated expansion joint.
As shown in fig. 3, the connection between the exhaust elbow and the exhaust gas turbocharger still maintains the conventional bolt connection mode, and does not affect the connection, the bolt adopted by the connection is a hexagon bolt, and a spring washer is arranged at the connection between the exhaust elbow and the exhaust gas turbocharger. The outlet end of the exhaust elbow is directly connected with the host exhaust pipe system through a bolt, and a bellows expansion joint is not added, so that the use of cabin space is reduced, and the host pipe system is simpler.
In summary, due to the existence of the gap a and the gap b, the exhaust elbow still has compensation amount of axial, transverse and angular displacement during installation. The axial, transverse and angular displacement of the supercharger unit and the exhaust pipe system of the main engine exhaust gas caused by temperature and pressure fluctuation can be compensated by self, and additional metal corrugated expansion joints are not additionally arranged for compensation. The weight that conventional bellows brought is alleviateed, also reduces manufacturing cost simultaneously for the main engine room inner tube system is more succinct, provides more effective space for the marine engine room.
It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and those skilled in the art should understand that the technical solutions of the present invention can be modified or substituted with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (4)
1. The utility model provides a mixed flow turbo charger gas exhaust pipe structure which characterized in that:
including flange, draft tube, ripple expansion joint and exhaust return bend, the flange with the one end of ripple expansion joint is connected, exhaust return bend with the other end of ripple expansion joint is connected, the draft tube with flange joint, ripple expansion joint cover is established the outside of draft tube, the internal diameter of draft tube with the internal diameter of flange and the internal diameter size of exhaust return bend is unanimous, the external diameter of draft tube with clearance an has between the internal diameter of ripple expansion joint, the draft tube with clearance b has between the exhaust return bend.
2. The mixed flow turbocharger gas exhaust pipe structure according to claim 1, characterized in that:
the joint of the flange and the corrugated expansion joint is provided with a first welding seam.
3. The mixed flow turbocharger gas exhaust pipe structure according to claim 2, characterized in that:
and a second welding seam is arranged at the joint of the exhaust elbow and the corrugated expansion joint.
4. The mixed flow turbocharger gas exhaust pipe structure according to claim 3, characterized in that:
and a third welding seam is arranged at the joint of the guide shell and the flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122448439.9U CN215862258U (en) | 2021-10-12 | 2021-10-12 | Mixed flow turbocharger gas exhaust pipe structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122448439.9U CN215862258U (en) | 2021-10-12 | 2021-10-12 | Mixed flow turbocharger gas exhaust pipe structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215862258U true CN215862258U (en) | 2022-02-18 |
Family
ID=80259438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122448439.9U Active CN215862258U (en) | 2021-10-12 | 2021-10-12 | Mixed flow turbocharger gas exhaust pipe structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215862258U (en) |
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2021
- 2021-10-12 CN CN202122448439.9U patent/CN215862258U/en active Active
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