CN204691895U - The exhaust-gas turbocharger of two-stage supercharging - Google Patents
The exhaust-gas turbocharger of two-stage supercharging Download PDFInfo
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- CN204691895U CN204691895U CN201520335411.6U CN201520335411U CN204691895U CN 204691895 U CN204691895 U CN 204691895U CN 201520335411 U CN201520335411 U CN 201520335411U CN 204691895 U CN204691895 U CN 204691895U
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- 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
Abstract
The utility model discloses the exhaust-gas turbocharger of two-stage supercharging, comprise high pressure stage rotor assembly, high pressure stage cartridge housing, high pressure stage nozzle ring, high pressure stage compressor casing, high pressure stage impeller cover, high pressure stage Diffuser, high pressure stage air-breathing housing, low pressure stage rotor assembly, low pressure stage cartridge housing, low pressure stage nozzle ring, low pressure stage compressor casing, low pressure stage impeller cover, low pressure stage Diffuser, fuel gas air admission shell and waste gas air inlet housing.High pressure stage cartridge housing is connected with the two ends of waste gas air inlet housing respectively with the large end of low pressure stage cartridge housing, and fuel gas air admission shell is all connected with the small end of high pressure stage cartridge housing with high pressure stage nozzle ring.High pressure stage compressor casing is connected with the large end of high pressure stage cartridge housing, and high pressure stage impeller cover is all connected with high pressure stage compressor casing with high pressure stage air-breathing housing, and low pressure stage compressor casing is connected with the large end of low pressure stage cartridge housing.The utility model achieves integrated two-stage supercharging in a pressurized machine, compact structure, and pressurized air pneumatics ratio can reach more than 6.0.
Description
Technical field
The utility model relates to exhaust-gas turbocharger.
Background technique
Exhaust-gas turbocharger is mainly used in marine diesel engine field, and for many years, exhaust-gas turbocharger generally all adopts the structure of one-level turbine turbine and one-level compressor impeller, as shown in Figure 1.Its working principle is: diesel engine cylinder waste gas enters exhaust-gas turbocharger from the exhaust gas entrance 91a of gas inlet housing 91, after nozzle ring guiding is accelerated, promotes turbine spindle 92 and rotates.Compressor impeller 93 is arranged on the other end of turbine spindle 92, compressor impeller 93 is driven to rotate when turbine spindle rotates, by gas compressor end air compressing, form the pressure difference inside and outside pressurized machine, under pressure difference effect, fresh air is inhaled into through intake elbow air inlet 94a, after fresh air enters compressor impeller 93, compressor impeller 93 is by compresses fresh air, this pressurized air is through Diffuser diffusion reduction of speed, enter the swirled air runner of compressor housings 95, and supercharging of slowing down further, finally discharge from the compressed air outlet 96b of compressor housings 95, enter the diesel engine gas collecting box and intercooler that connect with it.Along with the raising of technology, exhaust-gas turbocharger by pressurized air pressure ratio 1.5-2.5, the compressor efficiency about 70% at initial stage, brings up to current pressurized air pressure ratio more than 5.0, compressor efficiency more than 80%.
Due to the raising day by day of environmental requirement, the emission standard that international ocean is organized to set up is also increasingly strict, and in order to ensure diesel engine and pressurized machine burning more fully, reduce discharge, more the exhaust-gas turbocharger of high compression air pressure ratio drops into application at present.But, the raising of pressurized air pressure ratio, very high requirement is proposed to the design of the technical performance of compressor impeller, turbine turbine and material property, particularly require that unit level pressure ratio is more than 6.0, technically be difficult to the requirement meeting high pressure ratio, wide flow on the one hand, adopt conventional material also cannot ensure the reliability of pressurized machine and the requirement of Security simultaneously, if and adopt special material, this improves making the significant cost of exhaust-gas turbocharger, and greatly increase the difficulty of processing, its reliability is difficult to ensure.In order to address this problem, some manufacturer have employed the mode of two pressurized machines series connection, but due to two pressurized machines be cascaded take up space comparatively large, cause its layout on a diesel engine very difficult, institute is by this way also with obvious defect.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of pressurized air pneumatics than high, compact structure, the exhaust-gas turbocharger being convenient to the two-stage supercharging of manufacturing.
For solving the problems of the technologies described above, the utility model have employed following technological scheme:
The exhaust-gas turbocharger of two-stage supercharging, comprises high pressure stage rotor assembly, high pressure stage cartridge housing, high pressure stage nozzle ring, high pressure stage compressor casing, high pressure stage impeller cover, high pressure stage Diffuser, high pressure stage air-breathing housing, low pressure stage rotor assembly, low pressure stage cartridge housing, low pressure stage nozzle ring, low pressure stage compressor casing, low pressure stage impeller cover, low pressure stage Diffuser, fuel gas air admission shell and waste gas air inlet housing;
High pressure stage rotor assembly comprises high pressure stage main shaft, high pressure stage turbine blade, high pressure stage compressor impeller and high pressure stage main shaft bearing; High pressure stage turbine blade, high pressure stage compressor impeller and high pressure stage main shaft bearing are installed on high pressure stage main shaft, and high pressure stage main shaft bearing is arranged in high pressure stage cartridge housing;
Low pressure stage rotor assembly comprises low pressure stage main shaft, lower pressure stage turbine blade, low pressure stage compressor impeller and low pressure stage main shaft bearing; Lower pressure stage turbine blade, low pressure stage compressor impeller and low pressure stage main shaft bearing are installed on low pressure stage main shaft, and low pressure stage main shaft bearing is arranged in low pressure stage cartridge housing;
High pressure stage cartridge housing and low pressure stage cartridge housing all have large end and small end, the large end of high pressure stage cartridge housing is connected with the two ends of waste gas air inlet housing respectively with the large end of low pressure stage cartridge housing, and the small end of high pressure stage cartridge housing and the small end of low pressure stage cartridge housing all stretch in the endoporus of waste gas air inlet housing; Waste gas air inlet housing is provided with waste gas outlet; Fuel gas air admission shell is all connected with the small end of high pressure stage cartridge housing with high pressure stage nozzle ring, and fuel gas air admission shell is provided with diesel exhaust suction port; Low pressure stage nozzle ring is fixed on the flange of waste gas air inlet housing inside, and between lower pressure stage turbine blade and high pressure stage turbine blade;
High pressure stage compressor casing is connected with the large end of high pressure stage cartridge housing, high pressure stage impeller cover is all connected with high pressure stage compressor casing with high pressure stage air-breathing housing, high pressure stage Diffuser is fixed on high pressure stage impeller cover, high pressure stage air-breathing housing has air inlet, and high pressure stage compressor casing is provided with air outlet slit; Low pressure stage compressor casing is connected with the large end of low pressure stage cartridge housing, and low pressure stage impeller cover is connected with low pressure stage compressor casing, and low pressure stage Diffuser is fixed on low pressure stage impeller cover, and low pressure stage compressor casing is provided with air inlet and air outlet slit.
The exhaust-gas turbocharger of two-stage supercharging of the present utility model, by the mode of two-stage supercharging integrated in a pressurized machine, solve the situation that single stage supercharging is difficult to meet the demands in technology and material property on the one hand, solve the difficult problem that employing two pressurized machines are set up at space cloth on the other hand, it passes through two-stage supercharging, pressurized air pneumatics ratio reaches more than 6.0, diesel exhaust obtains burning fully and utilizes, in the waste gas of finally discharging, harmful matter also greatly reduces, reduce discharge, make vessel motion environmental protection more.
Accompanying drawing explanation
Fig. 1 shows the structural representation of existing a kind of exhaust-gas turbocharger.
Fig. 2 shows the cross-sectional view of the exhaust-gas turbocharger of the two-stage supercharging according to the utility model one embodiment.
Fig. 3 shows the schematic appearance of the exhaust-gas turbocharger of the two-stage supercharging according to the utility model one embodiment.
Fig. 4 is that schematic diagram is looked on the right side of Fig. 3.
Embodiment
Below in conjunction with accompanying drawing the utility model made and further illustrating.
Please refer to Fig. 2 to Fig. 4.According to the exhaust-gas turbocharger of the two-stage supercharging of the utility model one embodiment, comprise high pressure stage rotor assembly, high pressure stage cartridge housing 14, high pressure stage nozzle ring 15, high pressure stage compressor casing 16, high pressure stage impeller cover 17, high pressure stage Diffuser 18, high pressure stage air-breathing housing 19, low pressure stage rotor assembly, low pressure stage cartridge housing 24, low pressure stage nozzle ring 25, low pressure stage compressor casing 26, low pressure stage impeller cover 27, low pressure stage Diffuser 28, fuel gas air admission shell 31 and waste gas air inlet housing 32.
High pressure stage rotor assembly comprises high pressure stage main shaft 10, high pressure stage turbine blade 11, high pressure stage compressor impeller 12 and high pressure stage main shaft bearing.High pressure stage turbine blade 11, high pressure stage compressor impeller 12 and high pressure stage main shaft bearing are installed on high pressure stage main shaft 10, and high pressure stage main shaft bearing is arranged in high pressure stage cartridge housing 14.This high pressure stage main shaft bearing comprises the high pressure stage main shaft thrust bearing 13a and high pressure stage main shaft orientation bearing 13b that are arranged at the large end of high pressure stage cartridge housing 14 and the small end of high pressure stage cartridge housing 14 respectively.
Low pressure stage rotor assembly comprises low pressure stage main shaft 20, lower pressure stage turbine blade 21, low pressure stage compressor impeller 22 and low pressure stage main shaft bearing.Lower pressure stage turbine blade 21, low pressure stage compressor impeller 22 and low pressure stage main shaft bearing are installed on low pressure stage main shaft 20, and low pressure stage main shaft bearing is arranged in low pressure stage cartridge housing 24.This low pressure stage main shaft bearing comprises the low pressure stage main shaft orientation bearing 23b and low pressure stage main shaft thrust bearing 23a that are arranged at the large end of low pressure stage cartridge housing 24 and the small end of low pressure stage cartridge housing 24 respectively.
The large end of high pressure stage cartridge housing 14 is connected with the two ends of waste gas air inlet housing 32 respectively with the large end of low pressure stage cartridge housing 24, the small end of high pressure stage cartridge housing 14 and the small end of low pressure stage cartridge housing 24 all stretch in the endoporus of waste gas air inlet housing 32, and waste gas air inlet housing 32 is provided with waste gas outlet 321.Fuel gas air admission shell 31 is all connected with the small end of high pressure stage cartridge housing 14 with high pressure stage nozzle ring 15, and fuel gas air admission shell 31 is provided with diesel exhaust suction port 311.Low pressure stage nozzle ring 25 is fixed on the flange 33 of waste gas air inlet housing 32 inside, and between lower pressure stage turbine blade 21 and high pressure stage turbine blade 11.
High pressure stage compressor casing 16 is connected with the large end of high pressure stage cartridge housing 14, high pressure stage impeller cover 17 is all connected with high pressure stage compressor casing 16 with high pressure stage air-breathing housing 19, high pressure stage Diffuser 18 is fixed on high pressure stage impeller cover 17, on high pressure stage air-breathing housing, 19 have air inlet 191, and high pressure stage compressor casing 16 is provided with air outlet slit 162.Low pressure stage compressor casing 26 is connected with the large end of low pressure stage cartridge housing 24, low pressure stage impeller cover 27 is connected with low pressure stage compressor casing 26, low pressure stage Diffuser 28 is fixed on low pressure stage impeller cover 27, and low pressure stage compressor casing 26 is provided with air inlet 261 and air outlet slit 262.
In the embodiments illustrated in the figures, high pressure stage compressor casing 16 is arranged on the large end end face of high pressure stage cartridge housing 14 by bolt; Low pressure stage compressor casing 26 is arranged on the large end end face of low pressure stage cartridge housing 24 by bolt.The large end of high pressure stage cartridge housing 14 is connected respectively by the end face of bolt with waste gas air inlet housing 32 two ends with the large end of low pressure stage cartridge housing 24.Fuel gas air admission shell 31 and high pressure stage nozzle ring 15 are by being connected with the small end of high pressure stage cartridge housing 14 with the bolt of high pressure stage nozzle ring 15 through this fuel gas air admission shell 31 simultaneously.High pressure stage impeller cover 17 is all connected with high pressure stage compressor casing 16 by bolt with high pressure stage air-breathing housing 19, and high pressure stage Diffuser 18 is fixed by screws on high pressure stage impeller cover 17.The exhaust-gas turbocharger of this two-stage supercharging comprises high pressure stage nozzle ring cover 15a and low pressure stage nozzle ring cover 25a, this high pressure stage nozzle ring cover 15a and low pressure stage nozzle ring cover 25a includes a cylinder section and is positioned at the flange part of this cylinder section one end, the end face of the end face of the flange part 152 of high pressure stage nozzle ring cover and the flange part 252 of low pressure stage nozzle ring cover mutually against, and by simultaneously through this high pressure stage nozzle ring cover flange part and low pressure stage nozzle ring cover the bolt of flange part be connected with the flange 33 of waste gas air inlet housing inside.The top of each blade of low pressure stage nozzle ring 25 is provided with boss 250, the endoporus of high pressure stage nozzle ring cover cylinder section 151 is respectively equipped with the groove suitable with the boss of each blade on the aperture inwall near high pressure stage nozzle ring cover flange part one end, boss is embedded in groove, and the end face of flange part 252 against low pressure stage nozzle ring cover.
The air inlet of low pressure stage compressor casing 26 is provided with filtering silencer 41.The housing of filtering silencer 41 offers the low pressure stage spindle speed measurement hole 41a for installing electromagnetism speed probe, high pressure stage air-breathing housing 19 offers the high pressure stage spindle speed measurement hole 19a for installing electromagnetism speed probe, low pressure stage main shaft 20 is provided with tachometric survey groove 20a on the end face near low pressure stage spindle speed measurement hole, and high pressure stage main shaft 10 is provided with tachometric survey groove 10a on the end face near high pressure stage spindle speed measurement hole.By groove 20a and the 20a circumgyration incision magnetic line of force, electromagnetism speed probe can measure low pressure stage main shaft and high pressure stage main shaft rotating speed at work.
During work, the High Temperature High Pressure waste gas of cylinder of diesel engine enters high pressure stage nozzle ring 15 and high pressure stage turbine blade 11 through the waste gas inlet 311 of fuel gas air admission shell 31, promotes high pressure stage rotor assembly and realizes work rotation.Waste gas is after high pressure stage nozzle ring 15 and high pressure stage turbine blade 11, still there is higher temperature and pressure, continue to enter low pressure stage nozzle ring 25 and lower pressure stage turbine blade 21, promote low pressure stage rotor assembly and realize work rotation, after low pressure stage main shaft 20 rotates, by the air compressing in low pressure compressor impeller 25 region, compressor impeller district forms vacuum, thus external pressure and this region mineralization pressure poor, outside fresh air, under the effect of pressure difference, is sucked into low pressure compressor impeller 22 through filtering silencer 1.Pressurized air to slow down diffusion through low pressure stage Diffuser 28, low pressure stage compressor casing 26 enters one-level intercooler (not shown) after arranging and cools (after one-level supercharging, pressurized air pressure ratio reaches 3.0-3.5), then the air inlet 191 of high pressure stage air-breathing housing 19 is accessed, enter high pressure stage compressor impeller 12 subsequently, through compression further, pressurized air pressure ratio raises further (can reach 6.0-7.0 through two-stage supercharging ratio), pressurized air is through high pressure stage Diffuser 18 reduction of speed diffusion, after high pressure stage compressor casing 16 arranges, enter cold in diesel engine expansion box and secondary after, for cylinder of diesel engine.
Claims (8)
1. the exhaust-gas turbocharger of two-stage supercharging, it is characterized in that, comprise high pressure stage rotor assembly, high pressure stage cartridge housing, high pressure stage nozzle ring, high pressure stage compressor casing, high pressure stage impeller cover, high pressure stage Diffuser, high pressure stage air-breathing housing, low pressure stage rotor assembly, low pressure stage cartridge housing, low pressure stage nozzle ring, low pressure stage compressor casing, low pressure stage impeller cover, low pressure stage Diffuser, fuel gas air admission shell and waste gas air inlet housing;
Described high pressure stage rotor assembly comprises high pressure stage main shaft, high pressure stage turbine blade, high pressure stage compressor impeller and high pressure stage main shaft bearing; Described high pressure stage turbine blade, high pressure stage compressor impeller and high pressure stage main shaft bearing are installed on described high pressure stage main shaft, and high pressure stage main shaft bearing is arranged in high pressure stage cartridge housing;
Described low pressure stage rotor assembly comprises low pressure stage main shaft, lower pressure stage turbine blade, low pressure stage compressor impeller and low pressure stage main shaft bearing; Described lower pressure stage turbine blade, low pressure stage compressor impeller and low pressure stage main shaft bearing are installed on described low pressure stage main shaft, and low pressure stage main shaft bearing is arranged in low pressure stage cartridge housing;
High pressure stage cartridge housing and low pressure stage cartridge housing all have large end and small end, the large end of high pressure stage cartridge housing is connected with the two ends of described waste gas air inlet housing respectively with the large end of low pressure stage cartridge housing, and the small end of high pressure stage cartridge housing and the small end of low pressure stage cartridge housing all stretch in the endoporus of waste gas air inlet housing; Waste gas air inlet housing is provided with waste gas outlet; Described fuel gas air admission shell is all connected with the small end of high pressure stage cartridge housing with high pressure stage nozzle ring, and fuel gas air admission shell is provided with diesel exhaust suction port; Described low pressure stage nozzle ring is fixed on the flange of waste gas air inlet housing inside, and between described lower pressure stage turbine blade and described high pressure stage turbine blade;
Described high pressure stage compressor casing is connected with the large end of high pressure stage cartridge housing, described high pressure stage impeller cover is all connected with high pressure stage compressor casing with high pressure stage air-breathing housing, high pressure stage Diffuser is fixed on high pressure stage impeller cover, high pressure stage air-breathing housing has air inlet, and high pressure stage compressor casing is provided with air outlet slit; Described low pressure stage compressor casing is connected with the large end of low pressure stage cartridge housing, described low pressure stage impeller cover is connected with low pressure stage compressor casing, low pressure stage Diffuser is fixed on low pressure stage impeller cover, and low pressure stage compressor casing is provided with air inlet and air outlet slit.
2. the exhaust-gas turbocharger of two-stage supercharging as claimed in claim 1, it is characterized in that, described high pressure stage main shaft bearing comprises the high pressure stage main shaft thrust bearing and high pressure stage main shaft orientation bearing that are arranged at the large end of high pressure stage cartridge housing and high pressure stage cartridge housing small end respectively;
Described low pressure stage main shaft bearing comprises the low pressure stage main shaft orientation bearing and low pressure stage main shaft thrust bearing that are arranged at the large end of low pressure stage cartridge housing and low pressure stage cartridge housing small end respectively.
3. the exhaust-gas turbocharger of two-stage supercharging as claimed in claim 1, it is characterized in that, described high pressure stage compressor casing is arranged on the large end end face of high pressure stage cartridge housing by bolt; Described low pressure stage compressor casing is arranged on the large end end face of low pressure stage cartridge housing by bolt.
4. the exhaust-gas turbocharger of two-stage supercharging as claimed in claim 1, it is characterized in that, the large end of high pressure stage cartridge housing is connected respectively by the end face of bolt with waste gas air inlet housing two ends with the large end of low pressure stage cartridge housing.
5. the exhaust-gas turbocharger of two-stage supercharging as claimed in claim 1, is characterized in that, described fuel gas air admission shell and high pressure stage nozzle ring are by being connected with the small end of high pressure stage cartridge housing with the bolt of high pressure stage nozzle ring through this fuel gas air admission shell simultaneously;
The exhaust-gas turbocharger of described two-stage supercharging comprises high pressure stage nozzle ring cover and low pressure stage nozzle ring cover, this high pressure stage nozzle ring cover and low pressure stage nozzle ring cover include a cylinder section and are positioned at the flange part of this cylinder section one end, the end face of the end face of the flange part of high pressure stage nozzle ring cover and the flange part of low pressure stage nozzle ring cover mutually against, and by simultaneously through this high pressure stage nozzle ring cover flange part and low pressure stage nozzle ring cover the bolt of flange part be connected with the flange of waste gas air inlet housing inside;
The top of each blade of described low pressure stage nozzle ring is provided with boss, the endoporus of high pressure stage nozzle ring cover cylinder section is respectively equipped with the groove suitable with the boss of each blade on the aperture inwall near high pressure stage nozzle ring cover flange part one end, boss is embedded in groove, and the end face of flange part against low pressure stage nozzle ring cover.
6. the exhaust-gas turbocharger of two-stage supercharging as claimed in claim 1, it is characterized in that, described high pressure stage impeller cover, high pressure stage air-breathing housing are all connected with high pressure stage compressor casing by bolt, and described high pressure stage Diffuser is fixed by screws on high pressure stage impeller cover.
7. the exhaust-gas turbocharger of two-stage supercharging as claimed in claim 1, it is characterized in that, the air inlet of described low pressure stage compressor casing is provided with filtering silencer.
8. the exhaust-gas turbocharger of two-stage supercharging as claimed in claim 7, it is characterized in that, the housing of described filtering silencer offers the low pressure stage spindle speed measurement hole for installing electromagnetism speed probe, high pressure stage air-breathing housing offers the high pressure stage spindle speed measurement hole for installing electromagnetism speed probe, described low pressure stage main shaft is provided with tachometric survey groove on the end face near low pressure stage spindle speed measurement hole, and described high pressure stage main shaft is provided with tachometric survey groove on the end face near high pressure stage spindle speed measurement hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520335411.6U CN204691895U (en) | 2015-05-22 | 2015-05-22 | The exhaust-gas turbocharger of two-stage supercharging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520335411.6U CN204691895U (en) | 2015-05-22 | 2015-05-22 | The exhaust-gas turbocharger of two-stage supercharging |
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| CN204691895U true CN204691895U (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520335411.6U Withdrawn - After Issue CN204691895U (en) | 2015-05-22 | 2015-05-22 | The exhaust-gas turbocharger of two-stage supercharging |
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| CN (1) | CN204691895U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847480A (en) * | 2015-05-22 | 2015-08-19 | 上海齐耀发动机有限公司 | Two-stage supercharging exhaust gas turbocharger |
-
2015
- 2015-05-22 CN CN201520335411.6U patent/CN204691895U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847480A (en) * | 2015-05-22 | 2015-08-19 | 上海齐耀发动机有限公司 | Two-stage supercharging exhaust gas turbocharger |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151007 Effective date of abandoning: 20170620 |
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| AV01 | Patent right actively abandoned |