CN202970811U - Oil sealing cover for turbocharger - Google Patents
Oil sealing cover for turbocharger Download PDFInfo
- Publication number
- CN202970811U CN202970811U CN 201220601173 CN201220601173U CN202970811U CN 202970811 U CN202970811 U CN 202970811U CN 201220601173 CN201220601173 CN 201220601173 CN 201220601173 U CN201220601173 U CN 201220601173U CN 202970811 U CN202970811 U CN 202970811U
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- CN
- China
- Prior art keywords
- oil sealing
- oil
- sealing cover
- sealing cap
- turbosupercharger
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses an oil sealing cover for a turbocharger. A mounting hole (1) is formed in the central position of the oil sealing cover; an inward-concaved annular drainage cavity (2) is formed in the inner side of the oil sealing cover; four screw holes (3) which are distributed along the circumferential direction are formed in the oil sealing cover; an inner side stepped surface (4) for pressing against a sealing ring is also arranged at the periphery of the oil sealing cover; an outer lateral surface (5) of the oil sealing cover is integrally of a concave surface shape; an oil storing cavity (6) which can be used for storing lubricating oil is formed in the upper part of the inner side wall of the annular drainage cavity (2) of the oil sealing cover; and an oil outlet (7) communicated with the drainage cavity (2) is formed in the lower part of the inner side of the oil sealing cover. The oil sealing cover can be fixed by bolts and is favorable in stability and sealing effect; and according to the oil sealing cover, the outer lateral surface (5) can be better matched with the back side of a gas compressor impeller, an oil film can be established between the oil sealing cover and a sealing sleeve and the problem of oil leakage is better solved.
Description
Technical field
The utility model relates to a kind of component of turbo-charger, particularly a kind of turbosupercharger oil sealing cap.
Background technique
At present, nearly all diesel engine has all adopted turbocharging technology, and turbocharging technology also the forward petrol engine generally use and promote.Turbosupercharger has become the critical component of supercharged engine pressurization system.The parameter indexs such as the power performance of user after to the turbocharger matching motor, economic performance, environmental-protecting performance require more and more higher, and what cause especially terminal use's strong interest at present is the Leakage (being mainly from the leakage of oil of gas compressor end) of turbosupercharger.
Lubricating structure and the working principle of the gas compressor end of turbosupercharger: as shown in Figure 3, lubricant oil enters into the bearing support oil leab from the filler opening of bearing support 91, with the secondary component of each spin friction such as lubrication and cooling rotor 92, thrust bearing 94, get back to the fuel tank of motor from the oil outlet of bearing support 91 at last.For preventing that lubricant oil from leaking from the gas compressor end, be provided with the gas compressor end sealing configuration of turbosupercharger, as shown in Figure 3, the gas compressor end sealing configuration of present turbosupercharger, it comprises bearing support 91, rotor 92, compressor impeller 93, thrust bearing 94, oil sealing cap D, stuffing box gland 96 and back-up ring 97, and oil sealing cap D is fixed in bearing support 91 by back-up ring 7; There are following not enough parts in the structure of the oil sealing cap D of this gas compressor end sealing configuration:
1. oil sealing cap D is fixed in bearing support 91 by back-up ring 97, because back-up ring 97 itself just is installed in the draw-in groove of bearing support 91, can't be completely fixed, and certain axial float and radial displacement can occur oil sealing cap D, have caused serious Leakage.
2. oil sealing cap D is similar to rectangular edge annular breach 51 near the cross section that is provided with of compressor impeller 93 one sides, during use, as shown in Figure 3, although edge annular breach 51 has brought convenience for back-up ring 97 is installed, but it makes the wheel antiform of oil sealing cap D and compressor impeller 93 become a very large cross section to be similar to rectangular annular air storing cavity, there is on a small quantity the air of certain pressure to store when introducing from compressor impeller 93 outlets, be used for preventing oil leak, but through verification experimental verification, when motor during in the work of sub load or low-load, particularly in the plateau section motor car engine during at the lower long slope towing astern, the space of the approximate rectangular annular air storing cavity in cross section is very large, introduce a small amount of air and be difficult to fill up this annular air storing cavity, the air pressure that the approximate rectangular annular air storing cavity in this cross section stores is lower, the wheel that is compressor impeller 93 forms larger negative pressure cavity behind, be easy to make lubricant oil to leak out by oil sealing cap D.
3. the outer side surface of oil sealing cap D is provided with a center annular breach 52 near the position of its mounting hole, during use, as shown in Figure 3, cause the outer side surface of oil sealing cap D very large near part and the gap between compressor impeller 93 of mounting hole, it is inboard that the negative pressure at compressor impeller 93 back sides is easy to permeate oil sealing cap D, cause Leakage, be that the gap is too large, when the back side of compressor impeller 93 forms negative pressure, channel width due to this gap formation, between oil sealing cap D and stuffing box gland 96, air can enter the negative pressure cavity at the back side of compressor impeller 93 immediately, thereby the lubricant oil between oil sealing cap D and stuffing box gland 96 is easy to the negative pressure cavity leakage at the back side of compressor impeller 93, cause leakage of oil.
4. the inboard of oil sealing cap D is provided with the annular drainage lumens 2 of indent, during use, as shown in Figure 3, although drainage lumens 2 has certain drainage, lubricant oil can be introduced the interface of oil sealing cap D and stuffing box gland 96, the parts such as oil sealing cap D and stuffing box gland 96 are lubricated, but annular drainage lumens 2 does not have the effect of oil storage, when motor when just starting, when lubricant oil does not enter the oil pocket of bearing support 91, annular drainage lumens 2 does not yet have lubricant oil naturally, do not set up oil film between oil sealing cap D and stuffing box gland 66, cause like this parts such as oil sealing cap D and stuffing box gland 96 to be in " dry friction " state, be easy to damage the parts such as oil sealing cap D and stuffing box gland 96, can cause more serious Leakage simultaneously.
Summary of the invention
The purpose of this utility model is overcome the above-mentioned deficiency of prior art and a kind of turbosupercharger oil sealing cap is provided.It mainly can solve following technical problem: it can be bolted, and improves sealing effect; The outer side surface of oil sealing cap can well coordinate with the back side of compressor impeller, prevents that effectively negative pressure from causing lubricant oil to leak to the gas compressor end, also has the effect of carrying out damping vibration attenuation for compressor impeller and rotor assembly; The outer side surface of oil sealing cap can reach the effect of secondary booster choked flow near the part of its mounting hole and the back side of compressor impeller, can also play fine setting simultaneously, cushion the effect of pressure side axial force; When lubricant oil does not enter the oil pocket of bearing support, can set up oil film in advance between oil sealing cap and stuffing box gland, stop lubricant oil to flow to seal ring, turbocharger bearing system is carried out supercharging choked flow first, leakage of oil when preventing from just starting, and can reduce starting friction and damage.
The technical solution of the utility model is: a kind of turbosupercharger oil sealing cap, and its central position is provided with mounting hole, and its inboard is provided with the annular drainage lumens of indent; Which is provided with screw.
The further technological scheme of the utility model is: the screw which is provided with is four, and four screws are along circumferentially uniform.
The utility model further technological scheme is: its periphery also is provided be used to the inner side step face that presses seal ring.
The utility model further technological scheme is: its outer side surface integral body is concave.
The utility model also further technological scheme is: its outer side surface integral body is the concave of dish face shape.
The further technological scheme of the utility model is: the upper position of the madial wall of its annular drainage lumens is provided with the shoe cream room that can store lubricant oil.
The further technological scheme of the utility model is: its lower inside is provided with the oil outlet that is connected with drainage lumens.
The utility model compared with prior art has following features:
1. screw can tightly be pressed against the utility model on bearing support by bolt, more stable except making between the utility model and bearing support, can prevent the utility model axial float and radial displacement, can prevent effectively that lubricant oil is from the clearance leakage between the utility model and stuffing box gland.
2. the inner side step face, can tightly be pressed against seal ring between the step surface of inner side step face and bearing support by bolt, can reach better sealing effect.
3. outer side surface integral body is the outwards concave surface of projection of edge, can match with the back side shape of compressor impeller well, make between the back side of outer side surface and compressor impeller and only have a very circlet shape cavity, thereby it is faster to make replenish air get, just can eliminate the negative pressure at the back side of outer side surface and compressor impeller as long as namely enter a small amount of air, prevent that effectively negative pressure from causing lubricant oil to leak to the gas compressor end, the outer side surface structure of the concave that this integral body is also has the effect of carrying out damping vibration attenuation for compressor impeller and rotor assembly.
4. the upper position of the madial wall of annular drainage lumens is provided with the shoe cream room that can store a certain amount of lubricant oil, can deposit a certain amount of lubricant oil in shoe cream room, when lubricant oil does not enter the oil pocket of bearing support, the lubricant oil of storing in shoe cream room can be set up oil film in advance between the utility model and stuffing box gland, stop lubricant oil to flow to seal ring, turbocharger bearing system is carried out supercharging choked flow first, leakage of oil when preventing from just starting, lubricate be can also shift to an earlier date, starting friction and damage reduced.
Below in conjunction with the drawings and specific embodiments, detailed construction of the present utility model is further described.
Description of drawings
Fig. 1 is the structural representation of the turbosupercharger oil sealing cap of prior art;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is that the turbosupercharger oil sealing cap of prior art is arranged on the structural representation in turbosupercharger;
Fig. 4 is structural representation of the present utility model;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is that the utility model is arranged on the structural representation in turbosupercharger.
Embodiment
Embodiment 1
As shown in Fig. 4-6: a kind of turbosupercharger oil sealing cap, its central position is provided with mounting hole 1, and its inboard is provided with the annular drainage lumens 2 of indent; It is along circumferentially being evenly equipped with four screws 3, and during use, as shown in Figure 6, screw 3 is used for the utility model (being turbosupercharger oil sealing cap D) is fixed on bearing support 91, the utility model can be fixed on bearing support 91 after namely passing from screw 3 by bolt; By bolt, the utility model tightly is pressed against on bearing support 91, more stable except making between the utility model and bearing support 91, can prevent the utility model axial float and radial displacement, can prevent effectively that lubricant oil is from the clearance leakage between the utility model and stuffing box gland 96.
The periphery of the utility model (turbosupercharger oil sealing cap D) also is provided be used to the inner side step face 4 that presses seal ring, during use, as shown in Figure 6, can seal ring 41 tightly be pressed against between the step surface of inner side step face 4 and bearing support 91 by bolt, can reach better sealing effect.
the concave surface that outer side surface 5 integral body of the present utility model are the outside projection in edge (is the protruding concave surface in middle concave edge, approximate dish face shape), be that the utility model has been cancelled the technical characteristics (as shown in Figure 2) of prior art at the annular breach 51 in the edge that outer side surface is provided with and center annular breach 52, during use, as shown in Figure 6, the outer side surface 5 that this integral body of the present utility model is concave can match with the back side shape of compressor impeller 93 well, make between the back side of outer side surface 5 and compressor impeller 93 and only have a very circlet shape cavity, thereby it is faster to make replenish air get, as long as namely enter the negative pressure that a small amount of air just can be eliminated the back side of outer side surface 5 and compressor impeller 93, prevent that effectively negative pressure from causing lubricant oil to leak to the gas compressor end, outer side surface 5 structures of the concave that this integral body is also have the effect of carrying out damping vibration attenuation for compressor impeller 93 and rotor 92 assemblies, simultaneously, this concave surface makes the part near its mounting hole of outer side surface 5 lean on closely with the back side of compressor impeller 93, can reach the effect of secondary booster choked flow, can also play the effect of fine setting, buffering pressure side axial force simultaneously.
the upper position of the madial wall of annular drainage lumens 2 of the present utility model is provided with the shoe cream room 6 that can store a certain amount of lubricant oil, during use, as shown in Figure 6, can deposit a certain amount of lubricant oil in shoe cream room 6, when lubricant oil does not enter the oil pocket of bearing support 91 (being generally when just starting), in shoe cream room 6, the lubricant oil of storage can be set up oil film in advance between the utility model and stuffing box gland 96, stop lubricant oil to flow to seal ring, turbocharger bearing system is carried out supercharging choked flow first, leakage of oil when preventing from just starting, can also shift to an earlier date lubricate, reduce starting friction and damage, lower inside of the present utility model is provided with the oil outlet 7 that is connected with drainage lumens 2, and during use, oil outlet 7 places are connected with return tube, with lubricant oil drainage oil sump tank, realize the recycling of lubricant oil by return tube.
The present invention is not limited to above-mentioned concrete structure, so long as be provided be used to being fixedly mounted within screw 3 on bearing support 91 or outer side surface 5 integral body are the edge outwards the upper position of the madial wall of the concave surface of projection or annular drainage lumens 2 oil sealing cap that is provided with the turbosupercharger of the shoe cream room 6 that can store lubricant oil just drops on the protection domain of invention.
Claims (10)
1. turbosupercharger oil sealing cap, its central position is provided with mounting hole (1), and its inboard is provided with the annular drainage lumens (2) of indent; It is characterized in that: which is provided with screw (3).
2. turbosupercharger oil sealing cap according to claim 1, it is characterized in that: the screw which is provided with (3) is four, four screws (3) are along circumferentially uniform.
3. turbosupercharger oil sealing cap according to claim 1 and 2, it is characterized in that: its periphery also is provided be used to the inner side step face (4) that presses seal ring.
4. turbosupercharger oil sealing cap according to claim 1 and 2, it is characterized in that: its outer side surface (5) integral body is concave.
5. turbosupercharger oil sealing cap according to claim 3, it is characterized in that: its outer side surface (5) integral body is concave.
6. turbosupercharger oil sealing cap according to claim 4, it is characterized in that: described outer side surface (5) integral body is the concave of dish face shape.
7. turbosupercharger oil sealing cap according to claim 1 and 2, it is characterized in that: the upper position of the madial wall of its annular drainage lumens (2) is provided with the shoe cream room (6) that can store lubricant oil.
8. turbosupercharger oil sealing cap according to claim 3, it is characterized in that: the upper position of the madial wall of its annular drainage lumens (2) is provided with the shoe cream room (6) that can store lubricant oil.
9. turbosupercharger oil sealing cap according to claim 4, it is characterized in that: the upper position of the madial wall of its annular drainage lumens (2) is provided with the shoe cream room (6) that can store lubricant oil.
10. turbosupercharger oil sealing cap according to claim 7, it is characterized in that: its lower inside is provided with the oil outlet (7) that is connected with drainage lumens (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601173 CN202970811U (en) | 2012-11-15 | 2012-11-15 | Oil sealing cover for turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220601173 CN202970811U (en) | 2012-11-15 | 2012-11-15 | Oil sealing cover for turbocharger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202970811U true CN202970811U (en) | 2013-06-05 |
Family
ID=48511898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220601173 Expired - Lifetime CN202970811U (en) | 2012-11-15 | 2012-11-15 | Oil sealing cover for turbocharger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202970811U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843405A (en) * | 2018-06-22 | 2018-11-20 | 苏州诺迅汽车零部件有限公司 | A kind of nozzle ring structure of turbocharger |
-
2012
- 2012-11-15 CN CN 201220601173 patent/CN202970811U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108843405A (en) * | 2018-06-22 | 2018-11-20 | 苏州诺迅汽车零部件有限公司 | A kind of nozzle ring structure of turbocharger |
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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: 20130605 |