CN110685953A - Controlled booster compressor end sealing structure of sequential supercharging system - Google Patents
Controlled booster compressor end sealing structure of sequential supercharging system Download PDFInfo
- Publication number
- CN110685953A CN110685953A CN201910975515.6A CN201910975515A CN110685953A CN 110685953 A CN110685953 A CN 110685953A CN 201910975515 A CN201910975515 A CN 201910975515A CN 110685953 A CN110685953 A CN 110685953A
- Authority
- CN
- China
- Prior art keywords
- sealing ring
- shaft
- hole
- annular groove
- back plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/122—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/14—Lubrication of pumps; Safety measures therefor
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Supercharger (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a controlled supercharger compressor end sealing structure of a sequential supercharging system.A stepped hole is arranged at the center of a back plate, the diameter of a left side hole is smaller than that of a right side hole, and a back plate baffle platform which protrudes inwards is arranged on the right side of the right side hole to form a back plate ring groove at the right side hole; the piston sealing ring is connected in a left hole of the back disc, the hasp closing sealing ring is connected in a back disc ring groove, and the spring is fixed between the right side of the hasp closing sealing ring and the back disc blocking table; the cylindrical surface of the shaft sealing sleeve is provided with two annular grooves, the left side is provided with a left annular groove, the right side is provided with a right annular groove, and the two side walls of the left annular groove limit the axial position of the piston sealing ring; the two side walls of the right annular groove limit the axial position of the snap-closed sealing ring. The invention closes the sealing ring by adding the spring and the hasp on the shaft seal sleeve, cuts off the channel of the lubricating oil to the impeller of the compressor, and avoids the oil leakage phenomenon of the controlled supercharger at low speed and low load of the engine.
Description
Technical Field
The invention belongs to the technical field of electromechanics, and particularly relates to a compressor end sealing structure of a controlled supercharger of a sequential supercharging system.
Background
The controlled supercharger of the sequential supercharging system does not work at the low speed and the low load of the engine, the rotor does not rotate, and the original structure of the air compressor end of the supercharger which throws oil by centrifugal force does not work. However, when the engine works, the lubricating oil pump is in a running state, the lubricating oil continuously flows through a fit clearance of a bearing system of the supercharger, flows into an oil return cavity of the bearing body, and a part of the lubricating oil splashes to a sealing ring at the end of the compressor and leaks into a clearance between the back plate and the impeller of the compressor, so that the end sealing failure of the compressor is caused.
Disclosure of Invention
In view of this, the present invention is directed to provide a compressor end sealing structure of a controlled supercharger of a sequential supercharging system, which avoids oil leakage of the controlled supercharger at low speed and low load of an engine.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a compressor end sealing structure of a controlled supercharger of a sequential supercharging system comprises a compressor impeller, a back plate, a shaft sealing sleeve, a shaft and a bearing body, wherein the left end of the shaft is sleeved with the compressor impeller, and the middle part of the shaft is fixed in the bearing body through a bearing; the shaft seal sleeve is sleeved on the shaft and positioned between the compressor impeller and the bearing body, and the back plate is arranged on the outer side of the shaft seal sleeve; the piston sealing ring, the hasp closing sealing ring and the spring are further included;
a stepped hole is formed in the center of the back plate, the diameter of the left side hole is smaller than that of the right side hole, and a back plate baffle platform protruding inwards is arranged on the right side of the right side hole to form a back plate ring groove at the right side hole;
the piston sealing ring is connected in a left hole of the back disc, the hasp closing sealing ring is connected in a back disc ring groove, and the spring is fixed between the right side of the hasp closing sealing ring and the back disc blocking table;
the cylindrical surface of the shaft sealing sleeve is provided with two annular grooves, the left side is provided with a left annular groove, the right side is provided with a right annular groove, and the two side walls of the left annular groove limit the axial position of the piston sealing ring; the two side walls of the right annular groove limit the axial position of the hasp closing sealing ring; under the action of the elastic force of the spring, the left side wall of the hasp closing sealing ring is partially contacted with the left side wall of the right annular groove.
Furthermore, a right thrust plate, a spacer sleeve, a left thrust plate and an oil throwing plate are sequentially pressed between the right end surface of the shaft sleeve and a step surface arranged on the shaft from right to left; a counter bore is arranged on the left end face of the bearing body, and the outer end of the thrust bearing plate is embedded in the counter bore; the back plate and the bearing body compress the oil baffle plate and the thrust bearing plate, and an inner hole of the thrust bearing plate is contacted with the spacer sleeve.
Compared with the prior art, the invention has the following advantages:
according to the invention, the spring and the hasp closing sealing ring are added on the shaft seal sleeve, so that a channel for lubricating oil to an impeller of the gas compressor is cut off, and the oil leakage phenomenon of the controlled supercharger at low speed and low load of the engine is avoided; when the pressure at the back of the impeller of the air compressor is increased along with the increase of the rotating speed of the controlled supercharger, the air pressure pushes the hasp to close the side wall of the sealing ring, so that the friction force between the hasp and the shaft seal sleeve is reduced until the hasp and the sealing ring are not contacted, and the normal work of the controlled supercharger is ensured.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of a compressor-side sealing structure of a controlled supercharger of a sequential supercharging system according to an embodiment of the present invention.
Description of reference numerals:
1-compressor impeller, 2-shaft, 3-back disk, 4-sealing ring, 5-piston sealing ring, 6-hasp closed sealing ring, 7-shaft sealing sleeve, 8-left ring groove, 9-right ring groove, 10-back disk ring groove, 11-spring, 12-back disk baffle table, 13-screw, 14-oil baffle sheet, 15-oil throwing sheet, 16-left thrust sheet, 17-thrust bearing plate, 18-spacer sleeve, 19-right thrust sheet, 20-left retainer ring, 21-floating bearing, 22-right retainer ring, 23-bearing seat and 24-bearing body.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Fig. 1 is a compressor end sealing structure of a controlled supercharger of a sequential supercharging system, which comprises a compressor impeller 1, a back plate 3, a shaft seal sleeve 7, a shaft 2 and a bearing body 24, wherein the left end of the shaft 2 is sleeved with the compressor impeller 1, and the middle part of the shaft is fixed in the bearing body 24 through a bearing; the shaft seal sleeve 7 is sleeved on the shaft 2 and is positioned between the compressor impeller 1 and the bearing body 24, and the back plate 3 is arranged on the outer side of the shaft seal sleeve 7; the piston sealing ring is characterized by further comprising a piston sealing ring 5, a hasp closing sealing ring 6 and a spring 11;
a stepped hole is formed in the center of the back plate 3, the diameter of the left side hole is smaller than that of the right side hole, and a back plate baffle table 12 protruding inwards is arranged on the right side of the right side hole to form a back plate annular groove 10 at the right side hole;
the piston sealing ring 5 is connected in a left hole of the back disc 3, the hasp closing sealing ring 6 is connected in the back disc ring groove 10, and the spring 11 is fixed between the right side of the hasp closing sealing ring 6 and the back disc blocking table 12;
the shaft sealing sleeve 7 is provided with two annular grooves, the left side is provided with a left annular groove 8, the right side is provided with a right annular groove 9, and the axial position of the piston sealing ring 5 is limited by two side walls of the left annular groove 7; the two side walls of the right annular groove 7 limit the axial position of the snap-closed sealing ring 6; under the action of the spring force of the spring 11, the left side wall of the snap-closure sealing ring 6 is in partial contact with the left side wall of the right annular groove 9.
A right thrust plate 19, a spacer sleeve 18, a left thrust plate 16 and an oil slinger 15 are sequentially pressed between the right end surface of the shaft sleeve 7 and a step surface arranged on the shaft 2 from right to left; a counter bore is arranged on the left end face of the bearing body 24, and the outer end of the thrust bearing plate 17 is embedded in the counter bore; the right side of the back disc 3 is provided with a groove, the oil baffle sheet 14 is fixed in the groove, the back disc 3 and the bearing body 24 tightly press the oil baffle sheet 14 and the thrust bearing plate 17, and an inner hole of the thrust bearing plate 17 is contacted with the spacer sleeve 18; a sealing ring 4 is arranged between the back disc 3 and the bearing body 24.
When the pressure at the back of the impeller of the air compressor is increased along with the increase of the rotating speed of the controlled supercharger, the air pressure pushes the left side wall of the hasp closing sealing ring 6, so that the friction force between the hasp closing sealing ring 6 and the right ring groove 9 is reduced until the hasp closing sealing ring and the right ring groove are not contacted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (2)
1. A compressor end sealing structure of a controlled supercharger of a sequential supercharging system comprises a compressor impeller (1), a back plate (3), a shaft sealing sleeve (7), a shaft (2) and a bearing body (24), wherein the left end of the shaft (2) is sleeved with the compressor impeller (1), and the middle part of the shaft is fixed in the bearing body (24) through a bearing; the shaft sleeve (7) is sleeved on the shaft (2) and is positioned between the compressor impeller (1) and the bearing body (24), and the back disc (3) is arranged on the outer side of the shaft sleeve (7); the method is characterized in that: the piston sealing ring (5), the hasp closing sealing ring (6) and the spring (11) are further included;
a step hole is formed in the center of the back plate (3), the diameter of the left side hole is smaller than that of the right side hole, and a back plate baffle table (12) protruding inwards is arranged on the right side of the right side hole to enable the right side hole to form a back plate ring groove (10);
the piston sealing ring (5) is connected in a left hole of the back plate (3) in an inner mode, the hasp closing sealing ring (6) is connected in the back plate ring groove (10) in an inner mode, and the spring (11) is fixed between the right side of the hasp closing sealing ring (6) and the back plate blocking platform (12);
two annular grooves are formed in the cylindrical surface of the shaft sealing sleeve (7), a left annular groove (8) is formed in the left side, a right annular groove (9) is formed in the right side, and the axial position of the piston sealing ring (5) is limited by two side walls of the left annular groove (8); the axial position of the hasp closing sealing ring (6) is limited by two side walls of the right annular groove (9); under the action of the elastic force of the spring (11), the left side wall of the hasp closing sealing ring (6) is partially contacted with the left side wall of the right annular groove (9).
2. The sequential supercharging system controlled supercharger compressor end seal structure of claim 1, wherein: a right thrust plate (19), a spacer sleeve (18), a left thrust plate (16) and an oil throwing plate (15) are sequentially pressed between the right end surface of the shaft sleeve (7) and a step surface arranged on the shaft (2) from right to left; a counter bore is arranged on the left end face of the bearing body (24), and the outer end of the thrust bearing plate (17) is embedded in the counter bore; the oil baffle sheet (14) and the thrust bearing plate (17) are pressed by the back disc (3) and the bearing body (24), and an inner hole of the thrust bearing plate (17) is in contact with the spacer sleeve (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910975515.6A CN110685953B (en) | 2019-10-14 | 2019-10-14 | Controlled booster compressor end sealing structure of sequential supercharging system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910975515.6A CN110685953B (en) | 2019-10-14 | 2019-10-14 | Controlled booster compressor end sealing structure of sequential supercharging system |
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| Publication Number | Publication Date |
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| CN110685953A true CN110685953A (en) | 2020-01-14 |
| CN110685953B CN110685953B (en) | 2021-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201910975515.6A Active CN110685953B (en) | 2019-10-14 | 2019-10-14 | Controlled booster compressor end sealing structure of sequential supercharging system |
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| Country | Link |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214546Y (en) * | 1994-11-19 | 1995-12-06 | 西安交通大学 | Whirl commpression engine |
| CN200955435Y (en) * | 2006-09-18 | 2007-10-03 | 江津增压器厂 | Anti-oil-leakage device for air-compression end of vehicle pressure booster |
| CN201006491Y (en) * | 2006-12-05 | 2008-01-16 | 上海安亭科学仪器厂 | Structure of over-speed refrigerated centrifuge |
| CN201078264Y (en) * | 2007-09-14 | 2008-06-25 | 宁波天力增压器有限公司 | New type gland cover of supercharger |
| CN201297201Y (en) * | 2008-11-25 | 2009-08-26 | 杨爱国 | Oil-leak resisting turbocharger |
| CN103174506A (en) * | 2013-04-01 | 2013-06-26 | 宁波威孚天力增压技术有限公司 | Turbocharger |
| CN203258063U (en) * | 2013-05-08 | 2013-10-30 | 江西省萍乡市三善机电有限公司 | Novel hasp type sealing ring |
| CN203769867U (en) * | 2014-03-11 | 2014-08-13 | 江苏毅合捷汽车科技股份有限公司 | Shaft seal structure of turbocharger |
| CN203906018U (en) * | 2014-04-24 | 2014-10-29 | 宁波摩多汽车零部件有限公司 | Compressor end sealing structure of turbocharger |
| CN105927294A (en) * | 2016-05-18 | 2016-09-07 | 中国北方发动机研究所(天津) | Waste gas turbine power generation device |
| CN108757062A (en) * | 2018-04-10 | 2018-11-06 | 中国北方发动机研究所(天津) | A kind of sequence pressure charging system controlled boost device turbine end sealing structure |
| CN108801642A (en) * | 2018-06-13 | 2018-11-13 | 中国北方发动机研究所(天津) | A kind of experiment power turbine |
-
2019
- 2019-10-14 CN CN201910975515.6A patent/CN110685953B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2214546Y (en) * | 1994-11-19 | 1995-12-06 | 西安交通大学 | Whirl commpression engine |
| CN200955435Y (en) * | 2006-09-18 | 2007-10-03 | 江津增压器厂 | Anti-oil-leakage device for air-compression end of vehicle pressure booster |
| CN201006491Y (en) * | 2006-12-05 | 2008-01-16 | 上海安亭科学仪器厂 | Structure of over-speed refrigerated centrifuge |
| CN201078264Y (en) * | 2007-09-14 | 2008-06-25 | 宁波天力增压器有限公司 | New type gland cover of supercharger |
| CN201297201Y (en) * | 2008-11-25 | 2009-08-26 | 杨爱国 | Oil-leak resisting turbocharger |
| CN103174506A (en) * | 2013-04-01 | 2013-06-26 | 宁波威孚天力增压技术有限公司 | Turbocharger |
| CN203258063U (en) * | 2013-05-08 | 2013-10-30 | 江西省萍乡市三善机电有限公司 | Novel hasp type sealing ring |
| CN203769867U (en) * | 2014-03-11 | 2014-08-13 | 江苏毅合捷汽车科技股份有限公司 | Shaft seal structure of turbocharger |
| CN203906018U (en) * | 2014-04-24 | 2014-10-29 | 宁波摩多汽车零部件有限公司 | Compressor end sealing structure of turbocharger |
| CN105927294A (en) * | 2016-05-18 | 2016-09-07 | 中国北方发动机研究所(天津) | Waste gas turbine power generation device |
| CN108757062A (en) * | 2018-04-10 | 2018-11-06 | 中国北方发动机研究所(天津) | A kind of sequence pressure charging system controlled boost device turbine end sealing structure |
| CN108801642A (en) * | 2018-06-13 | 2018-11-13 | 中国北方发动机研究所(天津) | A kind of experiment power turbine |
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| Publication number | Publication date |
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| CN110685953B (en) | 2021-03-26 |
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