CN103174506A - Turbocharger - Google Patents
Turbocharger Download PDFInfo
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- CN103174506A CN103174506A CN2013101093742A CN201310109374A CN103174506A CN 103174506 A CN103174506 A CN 103174506A CN 2013101093742 A CN2013101093742 A CN 2013101093742A CN 201310109374 A CN201310109374 A CN 201310109374A CN 103174506 A CN103174506 A CN 103174506A
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- impeller
- body dish
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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
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- Supercharger (AREA)
Abstract
The invention discloses a turbocharger which comprises a compressor casing, an intermediate body and a turbine casing. A turbine rotating shaft is installed inside the intermediate body. A compressor impeller is fixed at one end of the turbine rotating shaft. A shaft sleeve is sleeved on the turbine rotating shaft. One end of the shaft sleeve contacts the impeller back of the compressor impeller. A compressor back plate is sleeved outside the shaft sleeve. An impeller back gap exists between the impeller back of the compressor impeller and the compressor back plate. Two air through holes are formed in the compressor back plate in an axial symmetry mode. A first end of each air through hole faces the compressor casing. A second end of each air through hole faces the impeller back of the compressor impeller, and is communicated with the impeller back gap. The turbocharger has the advantages that when the turbocharger is in normal work, the pressure of air at the position of the first end of each air through hole is higher than the pressure of air nearby the center of the impeller back of the compressor impeller. Therefore, air can flow to the position of the impeller back of the compressor impeller through the air through holes. The negative pressure at the position of the impeller back of the compressor impeller is reduced, and therefore lubricating oil in a lubricating oil chamber is effectively prevented from being sucked out.
Description
Technical field
The present invention relates to a kind of pressurized machine, especially relate to a kind of turbosupercharger.
Background technique
Have the characteristics such as the engine power of raising, reduction oil consumption, minimizing effulent due to turbosupercharger, therefore upward use quite extensive at motor (comprising petrol engine and diesel engine) at present.Yet the Leakage of turbosupercharger is problems of concern the most in the industry, and Leakage accounts for more than 80% of turbocharger failure, and most of Leakage occurs in the turbocharger air compressor end.
The sealing configuration of existing turbocharger air compressor end adopts double seal ring or the little Spielpassung oil baffle plate structure of single seal ring more.Fig. 1 has provided the sectional structure of common a kind of turbosupercharger, this turbosupercharger comprises the compressor casing 11 that links together, intermediate 2 and turbine case 31, be rotatablely equipped with turbine shaft 32 in intermediate 2, one end of turbine shaft 32 is fixed with compressor impeller 12, compressor impeller 12 is arranged in compressor casing 11, air compressor wheel 12 and compressor casing 11 consist of centrifugal compressor, the other end of turbine shaft 32 is fixed with turbine 33, turbine 33 is arranged in turbine case 31, be set with shaft seal cover 4 on turbine shaft 32, one axle head of shaft seal cover 4 contacts with the wheel back of the body of compressor impeller 12, the outer gas compressor back of the body dish 13 that is set with of shaft seal cover 4, be provided with seal ring 5 between the outer wall of the endoporus of gas compressor back of the body dish 13 and shaft seal cover 4, exist wheel to carry on the back gap 14 between the wheel back of the body of compressor impeller 12 and gas compressor back of the body dish 13, an end near gas compressor back of the body dish 13 on intermediate 2 is provided with lubricant reservoir 6.During the turbocharger operation of this structure, when compressor impeller 12 rotation due to the viscous effect of gas, can drive the gas rotating at the wheel back of the body place of compressor impeller 12, under the effect of centrifugal force, gas can flow to centrifugal direction, makes the wheel back of the body place negative pressure of compressor impeller 12 larger, thereby causes forming vacuum near the wheel back of the body center of compressor impeller 12, and then may with the lubricating oil sucking-off in lubricant reservoir 6, cause the leakage of oil of turbocharger air compressor end.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of simple in structure, and can effectively prevent the turbosupercharger of gas compressor end generation leakage of oil.
the present invention solves the problems of the technologies described above the technological scheme that adopts: a kind of turbosupercharger, comprise the compressor casing that links together, intermediate and turbine case, be rotatablely equipped with turbine shaft in described intermediate, one end of described turbine shaft is fixed with compressor impeller, described compressor impeller is arranged in described compressor casing, be set with the shaft seal cover on described turbine shaft, one end of described shaft seal cover contacts with the wheel back of the body of described compressor impeller, the outer gas compressor back of the body dish that is set with of described shaft seal cover, be provided with seal ring between the periphery wall of the endoporus of described gas compressor back of the body dish and described shaft seal cover, exist wheel to carry on the back the gap between the wheel back of the body of described compressor impeller and described gas compressor back of the body dish, it is characterized in that: axially be symmetrically arranged with two gas via-holes on described gas compressor back of the body dish, the first end of described gas via-hole is communicated with towards described compressor casing and with the outside of described gas compressor back of the body dish, the second end of described gas via-hole is communicated with towards the wheel of the described compressor impeller back of the body and with the described back of the body gap of taking turns.
Described gas via-hole comprises along the axial gas through hole of the axial setting of described gas compressor back of the body dish with along the radial gas through hole that radially arranges of described gas compressor back of the body dish, the first end of described axial gas through hole is communicated with towards described compressor casing and with the outside of described gas compressor back of the body dish, the second end of described axial gas through hole is communicated with the first end of described radial gas through hole, and the second end of described radial gas through hole is communicated with towards the wheel of the described compressor impeller back of the body and with the described back of the body gap of taking turns.
Described axial gas through hole is near the periphery wall of described gas compressor back of the body dish, and the first end of described radial gas through hole is near the periphery wall of described gas compressor back of the body dish, and the second end of described radial gas through hole is near the endoporus of described gas compressor back of the body dish.
The aperture of described axial gas through hole is consistent with the aperture of described radial gas through hole.
The central axis of described axial gas through hole is mutually vertical with the central axis of described radial gas through hole.
Stretch out on the first end of described radial gas through hole and be provided with the through hole that radially loses heart, the described first end port that radially loses heart through hole is positioned on the periphery wall of described gas compressor back of the body dish, and described the second end that radially loses heart through hole is communicated with the first end of described radial gas through hole.
The central axis of described radial gas through hole is consistent with the central axis of the described through hole that radially loses heart.
The aperture of described radial gas through hole is consistent with the aperture of the described through hole that radially loses heart.
Compared with prior art, the invention has the advantages that:
1) by axially be symmetrical arranged two gas via-holes on gas compressor back of the body dish, and the first end of gas via-hole is communicated with towards compressor casing and with the outside of gas compressor back of the body dish, the second end of gas via-hole is carried on the back and is carried on the back the gap with wheel towards the wheel of compressor impeller and is communicated with, the gas pressure at the first end place of turbosupercharger when normal operation gas via-hole is higher than the gas pressure of the wheel back of the body vicinity, center of compressor impeller like this, therefore gas can flow to by gas via-hole the wheel back of the body place of compressor impeller, reduce the negative pressure at the wheel back of the body place of compressor impeller, thereby effectively avoided the lubricating oil in the lubricant reservoir to be sucked out, solved the Leakage of turbocharger air compressor end.
2) due to the periphery wall of axial gas through hole near gas compressor back of the body dish, the second end of radial gas through hole is near the endoporus of gas compressor back of the body dish, therefore the gas pressure at the first end place of axial gas through hole is higher than the gas pressure at the second end place of radial gas through hole, namely higher than the gas pressure of the wheel of compressor impeller back of the body vicinity, center, thereby can effectively reduce the negative pressure at the wheel back of the body place of compressor impeller.
3) because the radial gas through hole is communicated with the periphery of gas compressor back of the body dish by the through hole that radially loses heart, so turbosupercharger has a small amount of air and spills by radially disappointing through hole when working, and so more is conducive to oil-leakage-prevention.
4) by two axisymmetric gas via-holes are set, just can realize the purpose of oil-leakage-prevention, simple in structure.
Description of drawings
Fig. 1 is the cross-sectional schematic of existing turbosupercharger;
Fig. 2 is the cross-sectional schematic of turbosupercharger of the present invention;
Fig. 3 is the enlarged diagram of A part in Fig. 2.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
a kind of turbosupercharger that the present invention proposes, as shown in Figures 2 and 3, it comprises the compressor casing 11 that links together, intermediate 2 and turbine case 31, be rotatablely equipped with turbine shaft 32 in intermediate 2, one end of turbine shaft 32 is fixed with compressor impeller 12, compressor impeller 12 is arranged in compressor casing 11, air compressor wheel 12 and compressor casing 11 consist of centrifugal compressor, the other end of turbine shaft 32 is fixed with turbine 33, turbine 33 is arranged in turbine case 31, be set with shaft seal cover 4 on turbine shaft 32, one axle head of shaft seal cover 4 contacts with the wheel back of the body of compressor impeller 12, the outer gas compressor back of the body dish 13 that is set with of shaft seal cover 4, be provided with seal ring 5 between the outer wall of the endoporus of gas compressor back of the body dish 13 and shaft seal cover 4, exist wheel to carry on the back gap 14 between the wheel back of the body of compressor impeller 12 and gas compressor back of the body dish 13, an end near gas compressor back of the body dish 13 on intermediate 2 is provided with lubricant reservoir 6, axially be symmetrically arranged with two gas via-holes 8 on gas compressor back of the body dish 13, namely two gas via-holes 8 are with the central axis axisymmetric of gas compressor back of the body dish 13, the first end of gas via-hole 8 is communicated with towards compressor casing 11 and with the outside of gas compressor back of the body dish 13, the second end of gas via-hole 8 is carried on the back and is carried on the back gap 14 with wheel towards the wheel of compressor impeller 12 and is communicated with.During the normal operation of this turbosupercharger, the gas pressure at the first end place of gas via-hole 8 is higher than the gas pressure of the wheel back of the body vicinity, center of compressor impeller 12, therefore gas can flow to by gas via-hole 8 the wheel back of the body place of compressor impeller 12, reduce the negative pressure at the wheel back of the body place of compressor impeller 12, thereby effectively avoided the lubricating oil in lubricant reservoir 6 to be sucked out, reached the purpose of turbocharger air compressor end oil-leakage-prevention.
in this specific embodiment, gas via-hole 8 can be designed to following structure, gas via-hole 8 comprises along the axial gas through hole 81 of the axial setting of gas compressor back of the body dish 13 with along the radial gas through hole 82 that radially arranges of gas compressor back of the body dish 13, the central axis that is axial gas through hole 81 is mutually vertical with the central axis of radial gas through hole 82, axial gas through hole 81 is near the periphery wall of gas compressor back of the body dish 13, the first end of axial gas through hole 81 is communicated with towards compressor casing 11 and with the outside of gas compressor back of the body dish 13, the second end of axial gas through hole 81 is communicated with the first end of radial gas through hole 82, the second end of radial gas through hole 82 is carried on the back and is carried on the back gap 14 with wheel towards the wheel of compressor impeller 12 and is communicated with, the first end of radial gas through hole 82 is near the periphery wall of gas compressor back of the body dish 13, the second end of radial gas through hole 82 is near the endoporus of gas compressor back of the body dish 13.At this, due to the periphery wall of axial gas through hole 81 near gas compressor back of the body dish 13, the second end of radial gas through hole 82 is near the endoporus of gas compressor back of the body dish 13, therefore the gas pressure at the first end place of axial gas through hole 81 is higher than the gas pressure at the second end place of radial gas through hole 82, namely higher than the gas pressure of the wheel of compressor impeller 12 back of the body vicinity, center, thereby can effectively reduce the negative pressure at the wheel back of the body place of compressor impeller 12.
When specific design gas via-hole 8, the aperture of axial gas through hole 81 can be become consistent with the aperture design of radial gas through hole 82.
In this specific embodiment, for making the oil-leakage-prevention effect reach better, can stretch out on the first end of radial gas through hole 82 through hole 83 that radially loses heart is set, be that the central axis of radial gas through hole 82 is consistent with the central axis of the through hole 83 that radially loses heart, radially the first end port of disappointing through hole 83 is positioned on the periphery wall of gas compressor back of the body dish 13, radially the second end of disappointing through hole 83 is communicated with the first end of radial gas through hole 82, and the aperture of radial gas through hole 82 is consistent with the aperture of the through hole 83 that radially loses heart.
when the specific design gas via-hole, can be first radially to make a call to a radially straight hole along gas compressor back of the body dish on gas compressor back of the body dish, this is the periphery and wheel back of the body gap of straight hole connection gas compressor back of the body dish radially, this radially straight hole comprise above-mentioned radial gas through hole and the through hole that radially loses heart, then on gas compressor back of the body dish along gas compressor back of the body dish axially make a call to one with the perpendicular axial straight hole of straight hole radially, this axial straight hole is communicated with the inner chamber of compressor casing and straight hole radially, this axial straight hole is above-mentioned axial gas through hole, beat again radially straight hole and the axial straight hole of same structure on the position of gas compressor back of the body dish 180 degree, namely complete the design of gas via-hole.
Claims (8)
1. turbosupercharger, comprise the compressor casing that links together, intermediate and turbine case, be rotatablely equipped with turbine shaft in described intermediate, one end of described turbine shaft is fixed with compressor impeller, described compressor impeller is arranged in described compressor casing, be set with the shaft seal cover on described turbine shaft, one end of described shaft seal cover contacts with the wheel back of the body of described compressor impeller, the outer gas compressor back of the body dish that is set with of described shaft seal cover, be provided with seal ring between the periphery wall of the endoporus of described gas compressor back of the body dish and described shaft seal cover, exist wheel to carry on the back the gap between the wheel back of the body of described compressor impeller and described gas compressor back of the body dish, it is characterized in that: axially be symmetrically arranged with two gas via-holes on described gas compressor back of the body dish, the first end of described gas via-hole is communicated with towards described compressor casing and with the outside of described gas compressor back of the body dish, the second end of described gas via-hole is communicated with towards the wheel of the described compressor impeller back of the body and with the described back of the body gap of taking turns.
2. a kind of turbosupercharger according to claim 1, it is characterized in that: described gas via-hole comprises along the axial gas through hole of the axial setting of described gas compressor back of the body dish with along the radial gas through hole that radially arranges of described gas compressor back of the body dish, the first end of described axial gas through hole is communicated with towards described compressor casing and with the outside of described gas compressor back of the body dish, the second end of described axial gas through hole is communicated with the first end of described radial gas through hole, the second end of described radial gas through hole is communicated with towards the wheel of the described compressor impeller back of the body and with the described back of the body gap of taking turns.
3. a kind of turbosupercharger according to claim 2, it is characterized in that: described axial gas through hole is near the periphery wall of described gas compressor back of the body dish, the first end of described radial gas through hole is near the periphery wall of described gas compressor back of the body dish, and the second end of described radial gas through hole is near the endoporus of described gas compressor back of the body dish.
4. according to claim 2 or 3 described a kind of turbosupercharger, it is characterized in that: the aperture of described axial gas through hole is consistent with the aperture of described radial gas through hole.
5. a kind of turbosupercharger according to claim 4, it is characterized in that: the central axis of described axial gas through hole is mutually vertical with the central axis of described radial gas through hole.
6. a kind of turbosupercharger according to claim 5, it is characterized in that: stretching out on the first end of described radial gas through hole is provided with the through hole that radially loses heart, the described first end port that radially loses heart through hole is positioned on the periphery wall of described gas compressor back of the body dish, and described the second end that radially loses heart through hole is communicated with the first end of described radial gas through hole.
7. a kind of turbosupercharger according to claim 6 is characterized in that: the central axis of described radial gas through hole is consistent with the central axis of the described through hole that radially loses heart.
8. a kind of turbosupercharger according to claim 6 is characterized in that: the aperture of described radial gas through hole is consistent with the aperture of the described through hole that radially loses heart.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109374.2A CN103174506B (en) | 2013-04-01 | 2013-04-01 | A kind of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310109374.2A CN103174506B (en) | 2013-04-01 | 2013-04-01 | A kind of turbocharger |
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| Publication Number | Publication Date |
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| CN103174506A true CN103174506A (en) | 2013-06-26 |
| CN103174506B CN103174506B (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310109374.2A Active CN103174506B (en) | 2013-04-01 | 2013-04-01 | A kind of turbocharger |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332792A (en) * | 2015-10-27 | 2016-02-17 | 潍柴动力股份有限公司 | Turbocharger device and control method for reducing oil leakage risk of turbocharger |
| CN105351246A (en) * | 2015-12-14 | 2016-02-24 | 中国北方发动机研究所(天津) | Arrangement structure of turbocharger sealing rings |
| CN110332146A (en) * | 2019-08-07 | 2019-10-15 | 中国北方发动机研究所(天津) | A kind of compressor end sealing structure of turbosuperchargers |
| CN110685953A (en) * | 2019-10-14 | 2020-01-14 | 中国北方发动机研究所(天津) | Controlled booster compressor end sealing structure of sequential supercharging system |
| CN111577446A (en) * | 2020-06-08 | 2020-08-25 | 常州环能涡轮动力股份有限公司 | Turbocharger |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1082150A (en) * | 1976-07-16 | 1980-07-22 | Mitsugu Tanuma | Turbine-compressor unit with means for preventing oil leakage |
| US5406796A (en) * | 1993-04-13 | 1995-04-18 | Mercedes-Benz Ag | Exhaust gas turbocharger for a supercharged internal combustion engine |
| CN201284669Y (en) * | 2008-09-27 | 2009-08-05 | 杨爱国 | Oil leakage-proof turbosupercharger |
| CN201297201Y (en) * | 2008-11-25 | 2009-08-26 | 杨爱国 | Oil-leak resisting turbocharger |
| CN203189112U (en) * | 2013-04-01 | 2013-09-11 | 宁波威孚天力增压技术有限公司 | Turbocharger |
-
2013
- 2013-04-01 CN CN201310109374.2A patent/CN103174506B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1082150A (en) * | 1976-07-16 | 1980-07-22 | Mitsugu Tanuma | Turbine-compressor unit with means for preventing oil leakage |
| US5406796A (en) * | 1993-04-13 | 1995-04-18 | Mercedes-Benz Ag | Exhaust gas turbocharger for a supercharged internal combustion engine |
| CN201284669Y (en) * | 2008-09-27 | 2009-08-05 | 杨爱国 | Oil leakage-proof turbosupercharger |
| CN201297201Y (en) * | 2008-11-25 | 2009-08-26 | 杨爱国 | Oil-leak resisting turbocharger |
| CN203189112U (en) * | 2013-04-01 | 2013-09-11 | 宁波威孚天力增压技术有限公司 | Turbocharger |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105332792A (en) * | 2015-10-27 | 2016-02-17 | 潍柴动力股份有限公司 | Turbocharger device and control method for reducing oil leakage risk of turbocharger |
| CN105351246A (en) * | 2015-12-14 | 2016-02-24 | 中国北方发动机研究所(天津) | Arrangement structure of turbocharger sealing rings |
| CN110332146A (en) * | 2019-08-07 | 2019-10-15 | 中国北方发动机研究所(天津) | A kind of compressor end sealing structure of turbosuperchargers |
| CN110332146B (en) * | 2019-08-07 | 2020-11-06 | 中国北方发动机研究所(天津) | End sealing structure of compressor of turbocharger |
| CN110685953A (en) * | 2019-10-14 | 2020-01-14 | 中国北方发动机研究所(天津) | Controlled booster compressor end sealing structure of sequential supercharging system |
| CN111577446A (en) * | 2020-06-08 | 2020-08-25 | 常州环能涡轮动力股份有限公司 | Turbocharger |
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| Publication number | Publication date |
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| CN103174506B (en) | 2016-07-06 |
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Address after: 315034 Zhejiang Province, Ningbo Jiangbei District Cicheng Town Chang Yang Road, No. 268 Patentee after: Ningbo Weifu Tianli turbocharging technology Limited by Share Ltd Address before: 315000 Zhejiang Province, Ningbo Jiangbei District Haichuan Road 168 Lane No. 1 Patentee before: Ningbo Weifu Tianli Turbocharging Technology Co., Ltd. |