Water-cooled turbocharger
By designing a water-cooled turbocharger, utilizing a circulating cooling system and insulation measures for the water-cooled intermediate shell and turbine housing, the problem of high-temperature radiation from the turbocharger is solved, achieving the effects of temperature reduction and extended equipment life.
Patent Information
- Application Number
- CN202520024241.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Turbochargers are prone to shaft damage when driven by high-temperature exhaust gases. Existing technologies are unable to effectively reduce the temperature radiated to the turbocharger shaft and housing, resulting in a shortened equipment lifespan.
The design employs a water-cooled turbocharger, which uses a circulating cooling system within a water-cooled intermediate shell and a water-cooled turbine housing, combined with a heat shield and turbine section sealing ring, to reduce the temperature of the turbocharger shaft and housing.
It effectively reduces the temperature of the turbocharger shaft and housing, improves equipment lifespan, prevents oil coking and carbon buildup, and extends equipment life.
Smart Images
Figure CN223510986U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to turbocharger technical field especially relates to a water -cooled turbocharger. BACKGROUND
[0002] There is a close connection between turbocharger and diesel engine, the turbocharger drives through the exhaust gas of diesel engine, improves the engine intake, and thus improves the engine performance, and the high compression ratio, high torque output and other characteristics of diesel engine make the turbocharger play a better role. Therefore, the combination of turbocharger and diesel engine has become an indispensable part of modern power system.
[0003] With the increasing power of diesel engine, if the engine output power is to be improved and the fuel consumption index is to be reduced under the condition of certain displacement, the turbocharger needs to input higher temperature and pressure exhaust gas energy, but the exhaust gas drives the turbine to rotate at high speed through the turbine shell channel, and the heat generated can reach more than 700 DEG C, even more than 800 DEG C, the temperature of the high-temperature pre-turbine position radiated to the turbocharger shaft system is also quite high, which can easily cause the engine oil in the shaft system to coke and carbon deposit, causing the turbocharger to be damaged. SUMMARY
[0004] In view of the above defects, the utility model provides a water -cooled turbocharger can reduce the temperature of the high-temperature pre-turbine position radiated to the turbocharger shaft system, also reduces the surface temperature outside the turbine shell, and greatly improves the service life of the turbocharger.
[0005] To achieve the above object, the utility model provides the following technical scheme: a water -cooled turbocharger, including water -cooled intermediate shell, one side of water -cooled intermediate shell is connected with compressor casing, the other side of water -cooled intermediate shell is connected with water -cooled turbine shell, the inside of water -cooled intermediate shell is rotatably connected with turbine shaft through floating bearing, the side of turbine shaft close to compressor casing is fixedly connected with compressor impeller, the compressor impeller and the floating bearing of the side close to it are equipped with sealing sleeve, thrust sleeve in proper order, the sealing sleeve is fixedly connected on water -cooled intermediate shell and is rotatably connected with turbine shaft, the thrust sleeve is fixedly connected on turbine shaft and is rotatably connected with water -cooled intermediate shell, the side of turbine shaft close to water -cooled turbine shell is fixedly connected with mixed flow turbine impeller, the side of water -cooled intermediate shell close to water -cooled turbine shell is equipped with intermediate shell water -cooled cavity, the water -cooled intermediate shell is equipped with intermediate shell water inlet and intermediate shell water outlet that communicate to intermediate shell water -cooled cavity, the water -cooled turbine shell is equipped with exhaust gas cavity, the water -cooled turbine shell is equipped with exhaust gas inlet flange and exhaust gas outlet flange that communicate to exhaust gas cavity, the water -cooled turbine shell is also equipped with turbine shell water -cooled cavity, the water -cooled turbine shell is equipped with water outlet flange and water outlet flange that communicate to turbine shell water -cooled cavity.
[0006] As a further improvement of the utility model, the water-cooled intermediate shell and the water-cooled turbine shell are provided with a heat shield.
[0007] As a further improvement of the utility model, the heat shield and the water-cooled intermediate shell are provided with a turbine section sealing ring.
[0008] As a further improvement of the utility model, the water-cooled intermediate shell is provided with an oil inlet hole, the oil inlet hole is communicated to the installation position of the floating bearing and the turbine shaft, the installation position of the floating bearing and the turbine shaft is communicated to an oil return cavity arranged inside the water-cooled intermediate shell, and one end of the oil return cavity is provided with an oil outlet hole.
[0009] As a further improvement of the utility model, the oil inlet hole and the oil outlet hole are arranged at opposite positions of the water-cooled intermediate shell.
[0010] As a further improvement of the utility model, the thrust bearing is rotatably connected to the water-cooled intermediate shell through the thrust bearing arranged in the circumferential direction of the shoulder portion.
[0011] As a further improvement of the utility model, the thrust bearing is rotatably connected to the water-cooled intermediate shell through the thrust bearing arranged in the circumferential direction of the shoulder portion.
[0012] As a further improvement of the utility model, the intermediate shell water inlet and the intermediate shell water outlet are arranged at the same side of the water-cooled intermediate shell.
[0013] The utility model has the advantages of:
[0014] 1. The water-cooled turbine shell is internally provided with a water cavity circulation channel, and the outer wall of the water-cooled turbine shell is arranged with a water inlet and outlet flange communicated to the water cavity circulation channel, so that the cooling water can continuously circulate between the water cavity circulation channel and the water supply device, the flow, pressure and temperature difference of the water inlet and outlet are controlled through the water supply device to reduce the surface temperature of the turbine shell, and the internal exhaust gas channel can input exhaust gas to drive the turbine to rotate.
[0015] 2. The water-cooled intermediate shell is internally arranged with an intermediate shell water-cooled cavity, and the intermediate shell water-cooled cavity is externally provided with a water inlet and a water outlet, and the cooling water can be discharged into the intermediate shell water-cooled cavity through the water supply device, the heat radiated by the turbine end is reduced through the intermediate shell water circulation, and the turbine supercharger shaft system and temperature are also reduced, and the service life of the turbine supercharger is greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 is the internal structure schematic view of the water-cooled turbine supercharger of the utility model;
[0017] Figure 2 is Figure 1 the enlarged schematic view of A in the figure;
[0018] Figure 3 is a water-cooled turbocharger housing axial view;
[0019] Figure 4 is a water-cooled turbocharger housing side view.
[0020] In the figure: 1 - compressor housing, 2 - compressor impeller;
[0021] 3 - water-cooled intermediate housing, 30 - oil inlet hole, 31 - oil injection hole, 32 - oil return cavity, 33 - oil outlet hole, 34 - intermediate housing water cooling cavity, 35 - water inlet, 36 - water outlet;
[0022] 4 - floating bearing, 40 - oil injection hole;
[0023] 5 - water-cooled turbine housing, 50 - turbine housing water cooling cavity, 51 - water outlet flange, 52 - exhaust gas inlet flange, 53 - water inlet flange, 54 - exhaust gas outlet flange, 55 - exhaust gas cavity;
[0024] 6 - turbine shaft, 60 - mixed flow turbine impeller;7 - thrust sleeve;8 - thrust bearing, 80 - thrust bearing oil injection hole;9 - sealing sleeve, 10 - fixed sleeve, 11 - heat shield. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail. It should be understood that the specific examples described herein are only used to explain the utility model, and are not used to limit the utility model. The directions mentioned in the following examples, such as up, down, left, right, front or back, are only the directions of the drawings. Therefore, the direction terms used are used to explain and not to limit the utility model, and in all examples, the same reference signs represent the same elements.
[0026] Please refer to Figures 1 to 4 The utility model provides a kind of water-cooled turbocharger, including water-cooled intermediate housing 3, compressor housing 1, compressor impeller 2, water-cooled turbine housing 5, turbine shaft 6.
[0027] The middle part of the water-cooled intermediate casing 3 is provided with a turbine shaft mounting cavity, and the turbine shaft 6 is arranged in the turbine shaft mounting cavity, and the two ends of the turbine shaft 6 pass through the turbine shaft mounting cavity. The turbine shaft 6 is provided with floating bearings 4 on both sides of the part located in the turbine shaft mounting cavity, and the floating bearings 4 are provided with oil injection holes 40, the oil injection holes 40 are communicated with oil injection holes 31 arranged on the inner side of the water-cooled intermediate casing 3, the two oil injection holes 31 are communicated with oil inlet holes 30 arranged on the outer side of the water-cooled intermediate casing 3, and the oil inlet holes 30 are communicated with the outside of the water-cooled intermediate casing 3. The water-cooled intermediate casing 3 is also provided with an oil return cavity 32, the oil return cavity 32 is arranged on one side of the turbine shaft 6 and communicated with the turbine shaft mounting cavity, and the oil return cavity 32 is provided with an oil outlet hole 33 on the side away from the turbine shaft 6, and the oil outlet hole 33 is located on the opposite side of the oil inlet hole 30 and communicated with the outside of the water-cooled intermediate casing 3.
[0028] As a further explanation of the present embodiment, lubricating oil can be injected into the oil circuit through the oil inlet hole 30, the lubricating oil enters the oil injection hole 31 from the oil inlet hole 30, and then flows into the oil injection hole 40 arranged on the floating bearing 4 from the oil injection hole 31, thereby providing lubrication and cooling for the shaft system, the lubricating oil after lubrication and cooling enters the oil return cavity 32 from the turbine shaft mounting cavity, and finally is discharged from the water-cooled intermediate casing 3 through the oil outlet hole 33 arranged on one side of the oil return cavity 32.
[0029] One side of the water-cooled intermediate casing 3 is fixedly connected with the compressor casing 1, and the side of the turbine shaft 6 close to the compressor casing 1 is fixedly connected with the compressor impeller 2. A plurality of components are arranged on the turbine shaft 6 between the compressor impeller 2 and the floating bearing 4 close to the side of the turbine shaft 6. The turbine shaft 6 between the compressor impeller 2 and the floating bearing 4 close to the side of the floating bearing 4 is fixedly connected with a thrust sleeve 7, the shoulder of the thrust sleeve 7 is provided with a thrust bearing 8, one side of the thrust bearing 8 is provided with a thrust bearing oil injection hole 80, and the thrust bearing oil injection hole 80 is communicated with the oil inlet hole 30. A sealing sleeve 9 is arranged between the compressor impeller 2 and the thrust sleeve 7, the turbine shaft 6 is rotatably connected with the sealing sleeve 9, the outer side of the sealing sleeve 9 is provided with a fixed sleeve 10, and the fixed sleeve 10 is fixedly connected with the water-cooled intermediate casing 3.
[0030] As a further explanation of the present embodiment, the compressor impeller 2 is located in the compressor casing 1, and the thrust sleeve 7, the thrust bearing 8 and the sealing sleeve 9 are located in the water-cooled intermediate casing 3. The inner end of the fixed sleeve 10 is matched with the shaft shoulder of the turbine shaft 6 to axially clamp and fix the thrust sleeve 7 and the sealing sleeve 9, and the outer end of the fixed sleeve 10 is matched with the water-cooled intermediate casing 3 to abut against the outer end of the floating bearing 4.
[0031] The other side of the water-cooled intermediate casing 3 is fixedly connected with the water-cooled turbine casing 5, the side of the turbine shaft 6 close to the water-cooled turbine casing 5 is fixedly connected with a mixed-flow turbine impeller 60, a heat shield 11 is arranged between the water-cooled intermediate casing 3 and the water-cooled turbine casing 5, and a turbine section sealing ring is arranged between the heat shield 11 and the water-cooled intermediate casing 3.
[0032] As a further explanation of the embodiment, the mixed-flow turbine impeller 60 is fixedly connected to the end of the turbine shaft 6, and the mixed-flow turbine impeller 60 is fixedly integrated with the turbine shaft 6 by welding. The mixed-flow turbine impeller 60 is located in the water-cooled turbine housing 5.
[0033] The water-cooled intermediate housing 3 is provided with an intermediate housing water-cooled cavity 34 on the side close to the water-cooled turbine housing 5. The intermediate housing water-cooled cavity 34 is annularly arranged along the outside of the turbine shaft 6 installation cavity. The water-cooled intermediate housing 3 is provided with an inlet 35 communicating with the intermediate housing water-cooled cavity 34, and is also provided with an outlet 36 communicating with the intermediate housing water-cooled cavity 34. The inlet 35 and the outlet 36 are both arranged on the same side of the intermediate housing water-cooled cavity 34.
[0034] The water-cooled turbine housing 5 is internally provided with a waste gas cavity 55. The water-cooled turbine housing 5 is provided with a waste gas inlet flange 52 on one side in the vertical direction, which communicates with the waste gas cavity 55. The water-cooled turbine housing 5 is provided with a waste gas outlet flange 54 at one end in the horizontal direction, which communicates with the outlet of the waste gas cavity 55. The outlet of the waste gas cavity 55 is in a wide-mouthed configuration.
[0035] The outside of the waste gas cavity 55 of the water-cooled turbine housing 5 is provided with a turbine housing water-cooled cavity 50, which is circumferentially arranged along the outside of the waste gas cavity 55. The turbine water-cooled cavity has a partial annular cross-section, which can increase the flow area of the cooling water and thus enhance the cooling effect.
[0036] One side of the water-cooled turbine housing 5 is provided with an inlet flange 53, which communicates with the turbine housing water-cooled cavity 50 inside the water-cooled turbine housing 5 through an inlet hole. The other side of the water-cooled turbine housing 5 is provided with an outlet flange 51, which communicates with the turbine housing water-cooled cavity 50 inside the water-cooled turbine housing 5 through an outlet hole.
[0037] As a further explanation of the embodiment, the water-cooled turbine housing 5 is provided with an inlet flange 53 and an outlet flange 51, which communicate with the water supply device. The inlet flange 53 and the outlet flange 51 communicate with the turbine housing water-cooled cavity 50 inside the water-cooled turbine housing 5, and the flow, pressure, and temperature difference of the water supplied by the water supply device can be controlled to reduce the surface temperature of the turbine housing. At the same time, the internal waste gas cavity 55 can be driven by the waste gas input through the waste gas inlet flange 52 to drive the mixed-flow turbine impeller 60 to rotate.
[0038] The working principle and use process of the embodiment are as follows: before the turbocharger is started, the oil inlet hole 30 and the oil outlet hole 33 of the intermediate housing are respectively connected to the oil inlet pipe and the oil outlet pipe of the oil supply device, and the water inlet 35 and the water outlet 36 of the water-cooled intermediate housing 3 are respectively connected to the water inlet pipe and the water outlet pipe of the water supply device. At the same time, the water inlet pipe and the water outlet pipe of the water supply device are also connected to the inlet flange 53 and the outlet flange 51.
[0039] When the turbocharger starts, the oil supply device circulates oil into the intermediate housing, which lubricates and cools the floating bearing 4 and the shaft system, and the water supply device supplies water into the intermediate housing water cooling cavity 34 in the water-cooled intermediate housing 3, reduces the heat from the exhaust gas radiated by the turbine end through the cooling water, and supplies water to the turbine housing water cooling cavity 50 in the water-cooled turbine housing 5, cools the outer surface of the water-cooled turbine housing 5, prevents the ambient temperature from rising due to heat transfer of high-temperature exhaust gas, and makes the working environment more friendly.
[0040] The preferred embodiments of the present application are described above, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.
Claims
1. A water-cooled turbocharger characterized by, The utility model provides a water -cooled turbine and compressor, including water -cooled intermediate shell (3), one side of water -cooled intermediate shell (3) is fixedly connected with compressor casing (1), the other side of water -cooled intermediate shell (3) is fixedly connected with water -cooled turbine casing (5), the inside of water -cooled intermediate shell (3) is rotatably connected with turbine shaft (6) through floating bearing (4), one side of turbine shaft (6) close compressor casing (1) is fixedly connected with compressor impeller (2), and the floating bearing (4) of close one side is equipped with sealing sleeve (9), thrust sleeve (7) in proper order between compressor impeller (2), sealing sleeve (9) is rotatably connected with turbine shaft (6) and is fixedly connected on water -cooled intermediate shell (3), and thrust sleeve (7) is rotatably connected with water -cooled intermediate shell (3) and is fixedly connected on turbine shaft (6), one side of turbine shaft (6) close water -cooled turbine casing (5) is fixedly connected with mixed flow turbine impeller (60), one side of water -cooled intermediate shell (3) close water -cooled turbine casing (5) is equipped with intermediate shell water -cooling chamber (34), and the intermediate shell water -cooling chamber (34) of water -cooled intermediate shell (3) is equipped with the intermediate shell water inlet (35) and the intermediate shell water outlet (36) that communicate to, the waste gas chamber (55) is equipped in water -cooled turbine casing (5), and the waste gas flange (52) and waste gas flange (53) that communicate to waste gas chamber (55) are equipped on water -cooled turbine casing (5), and the turbine casing water -cooling chamber (50) is also equipped on water -cooled turbine casing (5), and the turbine casing water -cooling chamber (50) is equipped on water -cooled turbine casing (5) with the water outlet flange (51) and the water outlet flange (51) that communicate to.
2. The water-cooled turbocharger of claim 1, wherein, The heat shield (11) is arranged between the water-cooled intermediate shell (3) and the water-cooled turbine casing (5).
3. The water-cooled turbocharger of claim 2, wherein, The turbine section sealing ring is arranged between the heat shield (11) and the water-cooled intermediate shell (3).
4. The water-cooled turbocharger of claim 1, wherein, The oil inlet hole (30) is arranged on the water-cooled intermediate shell (3) and communicates with the installation position of the floating bearing (4) and the turbine shaft (6).
5. The water-cooled turbocharger of claim 4, wherein, The oil inlet hole (30) and the oil outlet hole (33) are arranged at opposite positions of the water-cooled intermediate shell (3).
6. The water-cooled turbocharger of claim 4, wherein, The thrust bearing (8) is arranged on the shoulder of the thrust sleeve (7) and rotatably connects the water-cooled intermediate shell (3).
7. The water-cooled turbocharger of claim 6, wherein, The thrust bearing (8) is arranged on the shoulder of the thrust sleeve (7) and rotatably connects the water-cooled intermediate shell (3).
8. The water-cooled turbocharger of claim 1, wherein, The intermediate shell water inlet (35) and the intermediate shell water outlet (36) are arranged on the same side of the water-cooled intermediate shell (3).