CN202611779U - Double-seal-ring and double-oil-cavity middle body structure for turbocharger - Google Patents
Double-seal-ring and double-oil-cavity middle body structure for turbocharger Download PDFInfo
- Publication number
- CN202611779U CN202611779U CN 201220235511 CN201220235511U CN202611779U CN 202611779 U CN202611779 U CN 202611779U CN 201220235511 CN201220235511 CN 201220235511 CN 201220235511 U CN201220235511 U CN 201220235511U CN 202611779 U CN202611779 U CN 202611779U
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- oil
- cavity
- seal
- seal ring
- stuffing box
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Abstract
Disclosed is a double-seal-ring and double-oil-cavity middle body structure for a turbocharger. A first seal ring is mounted in a seal groove in a first seal sleeve outer circle, and a second seal ring is installed in a seal groove in a second seal sleeve outer circle. An oil return cavity is arranged on a disc back, and a large oil cavity and a small oil cavity are arranged on a middle body respectively. A first seal sleeve and a second seal sleeve are sleeved on a rotor shaft successively and installed in seal sleeve mounting holes in the disc back. An oil outlet of the oil return cavity on the disc back is communicated with an oil inlet of the small oil cavity on the middle body, the small oil cavity and the oil return cavity on the disc back form a second oil cavity of the turbocharger, and an oil outlet of the small oil cavity on the middle body and an oil outlet of the large oil cavity are communicated. Lube oil in the large oil cavity is used for cooling and lubricating a turbine rotor, bearings and a seal system, and forms bearing oil film at positions of a thrust bearing and a floating bearing to form a first oil cavity of the turbocharger. The first oil cavity and the second oil cavity are separated through the second seal ring in a sealing mode, and the second oil cavity and an impeller are sealed through the first seal ring.
Description
Technical field
The utility model relates to turbo-charger technical field, the intermediate structure on particularly a kind of turbosupercharger.
Background technique
At present; Intermediate on the turbosupercharger is shown in accompanying drawing 1 and accompanying drawing 2; Stuffing box gland 8 is enclosed within on the rotor shaft 7, and is installed in the stuffing box gland mounting hole on the dish back of the body 5, and seal ring 9 is installed in the annular seal groove on stuffing box gland 8 cylindricals; Prevent lubricant oil to turbosupercharger pressure end seepage, the big oil pocket 6-2 of intermediate 6 is all-in-one-piece single oil pocket structure.During turbocharger operation; From the lubricant oil of motor under the working pressure about 0.3MPa; Get into exhaust-gas turbocharger intermediate 6 from the oil inlet hole of intermediate 6, cooling and lubricated turbine rotor, bearing and sealing system, and at thrust bearing and floating bearing place formation pressure-bearing oil film.Too big or dead time is long when air-intake negative-pressure, this structure is prone to lubricant oil and breaks through seal ring 9 is pressed fault from the end seepage to turbosupercharger.In order to strengthen the sealability of gas compressor end; The turbosupercharger that has at present is employed in the structure of pressing dress double seal ring on the end stuffing box gland 8, because stuffing box gland 8 positions are compact, seal ring 9 is difficult to arranged apart; Cause double seal ring in fact only to play the effect of a seal ring, sealing effect is not good.
Summary of the invention
The purpose of the utility model is to overcome the above-mentioned deficiency of existing technology and provide a kind of double seal ring two oil pocket turbosupercharger intermediate structures.
The technological scheme of the utility model is: the two oil pocket turbosupercharger intermediate structures of a kind of double seal ring, it comprises first stuffing box gland, first seal ring, second stuffing box gland, second seal ring, the dish back of the body and intermediate.First seal ring is installed in the annular seal groove on the first stuffing box gland cylindrical, and second seal ring is installed in the annular seal groove on the second stuffing box gland cylindrical.The dish back is provided with oil back chamber, is respectively equipped with big oil pocket and small oil cavity on the intermediate.First stuffing box gland and second stuffing box gland are enclosed within on the rotor shaft successively; And be installed in the stuffing box gland mounting hole of dish back; The oil outlet of the oil back chamber of dish back communicates with the small oil cavity filler opening on the intermediate; Small oil cavity and the second road oil pocket that coils the oil back chamber formation turbosupercharger of carrying on the back, the small oil cavity oil outlet on the intermediate communicates with the oil outlet of big oil pocket.
When turbocharger operation; Lubricating oil gets into the turbosupercharger intermediate from the oil inlet hole of intermediate; Lubricating oil is used for cooling off and lubricated turbine rotor, bearing and sealing system in the big oil pocket, and forms the pressure-bearing oil film at thrust bearing and floating bearing place, forms the first road oil pocket of pressurized machine.Separate through second seal ring seal between the first road oil pocket and the second road oil pocket, adopt first seal ring seal between the second road oil pocket and the impeller.
The utility model compared with prior art has following characteristics:
The two oil pocket turbosupercharger intermediate structures of the double seal ring that the utility model provides adopt double seal ring and two oil back chambers; Can only be near impeller oil pocket lubricating oil from the second road oil pocket, lubricating oil can only flow into the first road oil pocket in the second road oil pocket, and separates with second seal ring seal between the first road oil pocket and the second road oil pocket; So the lubricious oil mass that the second road oil pocket occurs is little; Through the second seal ring pressure release, cause the lubricating oil pressure of the second road oil pocket also little, under action of gravity simultaneously; Lubricating oil flows out pressurized machine easily in the second road oil pocket, get into engine sump tank.Stop or reduced lubricating oil and broken through second seal ring of the second road oil pocket, and then avoided the leakage of oil of supercharger air compressor end at the gas compressor end.
Further describe below in conjunction with accompanying drawing and embodiment detailed structure the utility model.
Description of drawings
Accompanying drawing 1 is installed in the intermediate structure structural representation in the turbosupercharger for having now;
Accompanying drawing 2 is installed in the intermediate structure structural representation in the turbosupercharger for what the utility model provided;
Accompanying drawing 3 is the A portion enlarged view in the accompanying drawing 1;
Accompanying drawing 4 is the B portion enlarged view in the accompanying drawing 2.
Embodiment
The two oil pocket turbosupercharger intermediate structures of a kind of double seal ring, it comprises first stuffing box gland 1, first seal ring 2, second stuffing box gland 3, second seal ring 4, the dish back of the body 5 and intermediate 6.First seal ring 2 is installed in the annular seal groove on first stuffing box gland, 1 cylindrical, and second seal ring 4 is installed in the annular seal groove on second stuffing box gland, 3 cylindricals.The dish back of the body 5 is provided with oil back chamber 5-1, is respectively equipped with big oil pocket 6-2 and small oil cavity 6-1 on the intermediate 6.First stuffing box gland 1 and second stuffing box gland 3 are enclosed within on the rotor shaft 7 successively; And be installed in the stuffing box gland mounting hole on the dish back of the body 5; Oil back chamber 5-1 oil outlet on the dish back of the body 5 communicates with the small oil cavity 6-1 filler opening on the intermediate 6; The oil back chamber 5-1 of the small oil cavity 6-1 and the dish back of the body 5 forms the second road oil pocket of turbosupercharger, and the small oil cavity 6-1 oil outlet on the intermediate 6 communicates with the oil outlet of big oil pocket 6-2.
When turbocharger operation; Lubricating oil gets into turbosupercharger intermediate 6 from the oil inlet hole of intermediate 6; Lubricating oil is used for cooling off and lubricated turbine rotor, bearing and sealing system in the big oil pocket 6-2; And, form the first road oil pocket of pressurized machine at thrust bearing and floating bearing place formation pressure-bearing oil film.Separate through 4 sealings of second seal ring between the first road oil pocket and the second road oil pocket, adopt 2 sealings of first seal ring between the second road oil pocket and the impeller.
Claims (1)
1. two oil pocket turbosupercharger intermediate structures of a double seal ring, it is characterized in that: it comprises first stuffing box gland, first seal ring, second stuffing box gland, second seal ring, the dish back of the body and intermediate; First seal ring is installed in the annular seal groove on the first stuffing box gland cylindrical, and second seal ring is installed in the annular seal groove on the second stuffing box gland cylindrical; The dish back is provided with oil back chamber, is respectively equipped with big oil pocket and small oil cavity on the intermediate; First stuffing box gland and second stuffing box gland are enclosed within on the rotor shaft successively; And be installed in the stuffing box gland mounting hole of dish back; The oil outlet of the oil back chamber of dish back communicates with the small oil cavity filler opening on the intermediate; Small oil cavity and the second road oil pocket that coils the oil back chamber formation turbosupercharger of carrying on the back, the small oil cavity oil outlet on the intermediate communicates with the oil outlet of big oil pocket;
Lubricating oil gets into the turbosupercharger intermediate from the oil inlet hole of intermediate; Lubricating oil is used for cooling off and lubricated turbine rotor, bearing and sealing system in the big oil pocket; And at thrust bearing and floating bearing place formation pressure-bearing oil film; Form the first road oil pocket of pressurized machine, separate through second seal ring seal between the first road oil pocket and the second road oil pocket, adopt first seal ring seal between the second road oil pocket and the impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235511 CN202611779U (en) | 2012-05-24 | 2012-05-24 | Double-seal-ring and double-oil-cavity middle body structure for turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220235511 CN202611779U (en) | 2012-05-24 | 2012-05-24 | Double-seal-ring and double-oil-cavity middle body structure for turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611779U true CN202611779U (en) | 2012-12-19 |
Family
ID=47345488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220235511 Expired - Lifetime CN202611779U (en) | 2012-05-24 | 2012-05-24 | Double-seal-ring and double-oil-cavity middle body structure for turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611779U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109196188A (en) * | 2016-04-14 | 2019-01-11 | 博格华纳公司 | Flowing lath for turbo-charger bearing shell wick |
| CN110081069A (en) * | 2014-12-18 | 2019-08-02 | 三菱重工发动机和增压器株式会社 | The discharge equipment of thrust bearing and turbocharger including it |
-
2012
- 2012-05-24 CN CN 201220235511 patent/CN202611779U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081069A (en) * | 2014-12-18 | 2019-08-02 | 三菱重工发动机和增压器株式会社 | The discharge equipment of thrust bearing and turbocharger including it |
| 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 |
| CN109196188A (en) * | 2016-04-14 | 2019-01-11 | 博格华纳公司 | Flowing lath for turbo-charger bearing shell wick |
| CN109196188B (en) * | 2016-04-14 | 2021-07-13 | 博格华纳公司 | Flow strip for turbocharger bearing housing wick |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |