CN203906018U - Compressor end sealing structure of turbocharger - Google Patents
Compressor end sealing structure of turbocharger Download PDFInfo
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- CN203906018U CN203906018U CN201420205832.2U CN201420205832U CN203906018U CN 203906018 U CN203906018 U CN 203906018U CN 201420205832 U CN201420205832 U CN 201420205832U CN 203906018 U CN203906018 U CN 203906018U
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- oily
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Abstract
The utility model discloses a compressor end sealing structure of a turbocharger. The compressor end sealing structure comprises a back disc or an oil sealing cover and a shaft sealing sleeve, wherein a column body matched with the shaft sealing sleeve is arranged in the middle of the back disc or the oil sealing cover; an oil stopping dam is annularly arranged on the excircle end part of the column body and forms an oil return groove in the excircle; and an oil throwing structure is arranged on the outer edge of the shaft sealing sleeve. The compressor end sealing structure is simple in structure, low in cost, and high in sealing performance and oil leakage resistance; and specifically, engine oil with pressure when the turbocharger operates is effectively separated and stopped by the oil return groove and the oil stopping dam on the integral back disc or the split oil sealing cover from flowing to a gap inlet, the oil throwing structure arranged on the shaft sealing sleeve rotating at the high speed centrifugally throws the engine oil gathered during operation, and accordingly, lubricating oil is effectively prevented from entering from the gap.
Description
Technical field
The utility model relates to a kind of turbosupercharger, relates in particular to a kind of gas compressor end sealing configuration of turbosupercharger.
Background technique
Internal-combustion engine is the highest mobile dynamic power machine of thermal effect that the current mankind can grasp, it meets the demand of various supporting machineries with good power character, reliability, Economy, the feature of environmental protection, be widely used in supporting the use of the extraordinary power of industrial or agricultural, the transportation of road/vessel traffic, geology/oil drilling, generating and national defence, for infrastructure, communications and transportation, industrial or agricultural and the modernization of national defense and the promotion of China and the aspect such as promote economic development, uplift the people's living standard bringing into play huge effect.
Reinforcement along with the in short supply and environmental protection of international petroleum class resource; internal-combustion engine is efficient, energy-conservation, low emission becomes now and even the main target of Future Development; and internal-combustion engine to adopt in turbosupercharging refrigeration technique be one of its most effective and requisite important means, the gas compressor end sealing configuration of turbosupercharger is more and more universal as standard configuration.
The working principle of the gas compressor end sealing configuration of existing turbosupercharger is: the exhaust energy (high-temperature fuel gas, pulsed pressure wave, high-speed fuel gas are in the expansion of turbine channel) that booster turbine absorbs motor runs up, drive coaxial compressor impeller acting, suck and compress fresh air and send into engine chamber, promote air-fuel mixture perfect combustion, and then in the situation that not changing motor volume, weight, export more powerful power, save fuel oil reduction and discharge pollutants; The turbine shaft that the pressure lubrication oil providing from motor main oil gallery is inputted pressurized machine bearing support hydrodynamic lubrication, carrying, cooling High Rotation Speed is only provided the gas compressor end sealing configuration of turbosupercharger, because pressurized machine and motor only have the transitive relation of oil, gas, without any Mechanical Driven, it is the power of consumption of engine not.
The gas compressor end sealing configuration of the existing turbosupercharger in use problem of maximum is exactly leakage of oil, and the leakage oil impregnate of gas compressor end relatively seriously enjoys people's concern.The mechanism of pressurized machine leakage of oil is: first, the gas compressor end sealing configuration of turbosupercharger is after engine startup operation, while being with idle operating mode, because motor does not load load, exhaust energy is limited, drive the speed of pressurized machine running very low, deficiency is so that pressurized machine is normally brought into play the effect of adherence pressure and increase density of the induced air, and the now to-and-fro motion of engine piston really makes air inlet pipeline form negative pressure, supercharger air compressor end is all in negative pressure state like this, if long-time idling work like this, when negative pressure be greater than resistance that supercharger air compressor end sealing configuration produces will sucking-off bearing support in lubricant oil and occurring--the roof leaking of anti-negative pressure scarce capacity.When the second, motor enters normal working on-load rotating speed, pressure lubrication oil enters after the turbine shaft of pressurized machine bearing support hydrodynamic lubrication, carrying, cooling High Rotation Speed by gravity reflux, due to fuel delivery, require lubricant oil certain pressure that is bound to assemble and have in oil pocket, and coordinate the gap location forming first by the part moving, oil to be thrown away at each component, secondly like labyrinth, sealing configuration cooperatively interacts and prevents the seepage of lubricant oil, the several typical supercharger structure layout from current home and abroad, supercharger air compressor structural design is back of the body dish (integrated type) or oil sealing cap (split type) (radially enters with the single order sealing that coordinates of shaft seal cover, directly axially flow to seal ring place), gap is radial arrangement, the gap coordinating when thrust bearing in bearing support of the lubricant oil of supercharger air compressor end and shaft seal cover sprays, through oil back chamber, lean on gravity oil return, this makes pressurized machine when handing over variable working condition, radial gap (having width to limit in design) has the variation of width, make the lubricant oil of not thrown away have pump suction to be pressed into the possibility in gap, after being greater than the resistance of seal ring formation under the effect of pump suction pressure, the lubricant oil being pressed into by suction will produce the leakage of oil of pressurized machine, and oil return when smooth the probability of leakage of oil will significantly increase, Here it is the reason of leaking oil impregnate when pressurized machine runs up often.
Turbosupercharger in prior art (integrated type) as shown in Figure 1, 2, comprises gas compressor end and intake and exhaust regulation and control system 004.Gas compressor end 001 sealing configuration is for loading onto floating bearing 024, floating bearing back-up ring 020, turbine shaft 025, thrust plate 07, thrust bearing 08, spacer sleeve 06, grease baffle 016 formation bearing support, pressure side seal ring 04 is loaded onto to shaft seal cover 03 and reinstall the assembly forming in the hole of back of the body dish 012 and pack in turbine shaft 025, with four sunk screws 09, be connected with bearing support and tighten up.Above-mentioned gas compressor end sealing configuration is further equipped again: the turbosupercharger of compressor impeller 01, locking nut 02, seal ring 013, compressor volute 05, pressure side pressing plate 014, bolt 015, turbine box 023, whirlpool end seal ring 022, thermal shield 021, whirlpool end clamp plate 019, locating stud 017, heat-resisting screw 018 complete.
As shown in Figure 3,4, pressurized machine moving element comprises turbine shaft assembly to turbosupercharger in prior art (split type), and turbine shaft assembly is combined by: turbine shaft 21, thrust plate 13, shaft seal cover 12, impeller 3, locking nut 2; Turbine utilizes high temperature, the high-speed exhaust gas that motor is discharged to drive and run up, and drives the 3 synchronous high-speed runnings of coaxial compressor impeller, sucks and compress fresh air to be input in engine intake manifold; And intermediate 15 utilizes the oil inlet passage (comprising filler opening 22, return opening 23) on it, the lubricant oil that motor input is come is delivered to the both sides of floating bearing 17, stop collar 16 inside and outside circles and thrust bearing 11, for supporting, lubricated, cooling turbine rotating shaft at a high speed, stable operation;
Turbine box 20, whirlpool end nut 14, thermal shield 18, intermediate 15, whirlpool end seal ring 19 form gas circuit and the oil circuit of whirlpool end and separate by whirlpool end seal ring 19; Equally, pressure shell 1, pressure side nut 10, pressing plate 9, sunk screw 5, seal ring 7, O RunddichtringO 8, impeller 3, intermediate 15, oil sealing cap 6, shaft seal cover 12, pressure side seal ring 4 and thrust plate 13, thrust bearing 11 form gas circuit and the oil circuit of pressure side and are kept apart by pressure side seal ring 4; Thereby guarantee relatively independent, the reliably working of each several part.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of gas compressor end sealing configuration of turbosupercharger, to overcome in prior art, has the defect of leaking oil impregnate when turbosupercharger runs up.
For achieving the above object, the utility model provides a kind of gas compressor end sealing configuration of turbosupercharger, described gas compressor end sealing configuration comprises back of the body dish or oil sealing cap, shaft seal cover, and the middle part of described back of the body dish or oil sealing cap is provided with the cylindrical body matching with shaft seal cover; Keep off oily dam annular and be arranged at the outer rounded ends of described cylindrical body and on described cylindrical, form oil return groove, the outer rim of described shaft seal cover is provided with gets rid of oily structure.
Wherein, described in get rid of oily structure and comprise the first ladder, the second ladder, in described the first ladder and the second ladder joint, be provided with and get rid of oily half slot.
Wherein, described in get rid of oily structure and comprise the first ladder, the second ladder, described the first ladder gets rid of the transition of oily oblique angle with the second ladder by one and is connected.
Wherein, described in get rid of oily structure and comprise the first ladder, the second ladder, in described the first ladder and the second ladder joint, be provided with and get rid of oily square groove.
Compared with prior art, the beneficial effects of the utility model be not only simple in structure, cost is low, sealing is strong, and can effectively stop gas compressor end lubricant oil from pressure side matching gap, to leak and ooze when pressurized machine is worked, also can effectively promote the ability of pressurized machine anti-negative pressure leakage of oil when engine idle is worked simultaneously.Specifically, oil return groove on back of the body dish (integrated type) or oil sealing cap (split type), keep off oily dam and effectively cut off and stop that there be machine oil the flowing to ingress, gap of pressure in pressurized machine when work, and the shaft seal of High Rotation Speed overlap on it arrange get rid of oily structure by work time centrifugal the throwing away of machine oil that gather, effectively stop lubricant oil entering from gap.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram of turbosupercharger in prior art (integrated type);
Fig. 2 is the local structure for amplifying schematic diagram of gas compressor end sealing configuration in Fig. 1;
Fig. 3 is the sectional structure schematic diagram of turbosupercharger in prior art (split type);
Fig. 4 is the local structure for amplifying schematic diagram of gas compressor end sealing configuration in Fig. 3;
Fig. 5 is the sectional structure schematic diagram of the utility model turbosupercharger (integrated type);
Fig. 6 is the local structure for amplifying schematic diagram of gas compressor end sealing configuration in Fig. 5;
Fig. 7 is the first sectional structure schematic diagram after the utility model back of the body dish coordinates with shaft seal cover;
Fig. 8 is the second sectional structure schematic diagram after the utility model back of the body dish coordinates with shaft seal cover;
Fig. 9 is the sectional structure schematic diagram of the utility model turbosupercharger (split type);
Figure 10 is the local structure for amplifying schematic diagram of gas compressor end sealing configuration in Fig. 9;
Figure 11 is the first sectional structure schematic diagram after the utility model oil sealing cap coordinates with shaft seal cover;
Figure 12 is the second sectional structure schematic diagram after the utility model oil sealing cap coordinates with shaft seal cover.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used for illustrating the utility model, but are not used for limiting scope of the present utility model.
Embodiment one:
As shown in Fig. 5,6,7, turbosupercharger in the present embodiment and prior art (integrated type) is basic identical, difference is, described gas compressor end 0001 comprises back of the body dish 0012, shaft seal cover 003, and the middle part 1.4 of described back of the body dish 0012 is provided with and shaft seal cover 003 cylindrical body matching 1.5; Keeping off oily dam 1.6 annulars is arranged at cylindrical 1.7 ends of described cylindrical body 1.5 and on described cylindrical, forms oil return groove 1.8, the oil return groove arranging on back of the body dish 1.2, to keep off oily dam can be that casting forms can be also to consist of machining, and oil partition tank, oil interceptor that oil return groove 1.8 is identical with implication are equal to, keep off oil protection wall, the flinger ring that oily dam 1.6 is identical with implication and be equal to.The outer rim 1.9 of described shaft seal cover 003 is provided with gets rid of oily structure 2.0.Describedly get rid of oily structure 2.0 and comprise the first ladder 2.1, the second ladder 2.2, in described the first ladder 2.1 and the second ladder 2.2 joints, be provided with and get rid of oily square groove 2.3.Be designed with the shaft seal cover that gets rid of oily structure 2.0, load onto that pressure side seal ring 04 is rear to be contained in the back of the body dish mider hole that designs and be manufactured with oil return groove and the oily dam of gear as assembly, then with sunk screw 09, be contained on the bearing support that is equipped with good turbine shaft 025; Shaft seal cover and the position of back of the body dish assembling formation and the sealing labyrinth of gap formation " Z " font 1.1.
The working principle of the present embodiment is as follows: on the back of the body dish that forms oil back chamber, design an oily dam of gear to form oil return groove, in shaft seal, put design and get rid of oily structure, the oil return groove coiling by the back of the body, keep off the matching gap place that oily dam isolation lubricating oil directly enters shaft seal cover and back of the body dish, and keep off oily dam and the rigging position of shaft seal cover and " Z " font gap of formation, form second order sealing, changed the flow path that leaks oil impregnate simultaneously, oil is entered by radially directly entering to change into axially, so just formed second order sealing; And cover the oily dam of gear, reach back of the body dish and shaft seal cover matching gap (nothing design width limit value, wider than existing structure, eliminated the impact of Axial changes on it) oily structure high-speed is centrifugal to be thrown away getting rid of of being put by the shaft seal of High Rotation Speed again of the lubricant oil located, lubricant oil in oil back chamber is through deadweight oil return like this, can greatly reduce the probability that leaks oil impregnate, the size in " Z " font gap simultaneously controlled well also can improve the ability of pressurized machine anti-negative pressure leakage of oil of gas compressor end under idling operation.
The oily structure 2.0 of getting rid of in the present embodiment one is not limited to said structure, this gets rid of oily structure and can also be set to as shown in Figure 8, describedly get rid of oily structure and comprise the first ladder 2.4, the second ladder 2.5, between described the first ladder and the second ladder, by one, get rid of 2.6 transition of oily oblique angle and connect.
The oily structure of getting rid of in the present embodiment one is not limited to said structure, described in get rid of oily structure and comprise the first ladder, the second ladder, in described the first ladder and the second ladder joint, be provided with and get rid of oily half slot.
Embodiment two:
As shown in Fig. 9,10,11, turbosupercharger in the present embodiment and prior art (split type) is basic identical, difference is, described gas compressor end sealing configuration comprises oil sealing cap 006, shaft seal cover 0012, and the middle part 1.11 of described oil sealing cap is provided with the cylindrical body 1.12 matching with shaft seal cover; Keeping off oily dam 1.13 annulars is arranged at cylindrical 1.14 ends of described cylindrical body and forms oil return groove 1.15 on described cylindrical 1.14, the oil return groove arranging on oil sealing cap, to keep off oily dam can be that casting forms can be also to consist of machining, and oil partition tank, oil interceptor that oil return groove 1.15 is identical with implication are equal to, keep off oil protection wall, the flinger ring that oily dam 1.13 is identical with implication and be equal to.The outer rim 1.16 of described shaft seal cover is provided with gets rid of oily structure 1.17.Describedly get rid of oily structure and comprise the first ladder 1.18, the second ladder 1.19, in described the first ladder and the second ladder joint, be provided with and get rid of oily square groove 1.20.Be designed with the shaft seal cover that gets rid of oily structure, load onto that pressure side seal ring 4 is rear to be contained in the oil sealing cap mider hole that designs and be manufactured with oil return groove and the oily dam of gear as assembly, then with sunk screw 5, be contained on the bearing support that is equipped with good turbine shaft 21; Shaft seal cover and the position of oil sealing cap assembling formation and the sealing labyrinth of gap formation " Z " font 1.21.
The working principle of the present embodiment is as follows: on the oil sealing cap that forms oil back chamber, design an oily dam of gear to form oil return groove, in shaft seal, put design and get rid of oily structure, by the oil return groove on oil sealing cap, keep off the matching gap place that oily dam isolation lubricating oil directly enters shaft seal cover and oil sealing cap, and keep off oily dam and the rigging position of shaft seal cover and " Z " font gap of formation, form second order sealing, changed the flow path that leaks oil impregnate simultaneously, oil is entered by radially directly entering to change into axially, so just formed second order sealing; And cover the oily dam of gear, reach oil sealing cap and shaft seal cover matching gap (nothing design width limit value, wider than existing structure, eliminated the impact of Axial changes on it) oily structure high-speed is centrifugal to be thrown away getting rid of of being put by the shaft seal of High Rotation Speed again of the lubricant oil located, lubricant oil in oil back chamber is through deadweight oil return like this, can greatly reduce the probability that leaks oil impregnate, the size in " Z " font gap simultaneously controlled well also can improve the ability of pressurized machine anti-negative pressure leakage of oil of gas compressor end under idling operation.
The oily structure 1.17 of getting rid of in the present embodiment two is not limited to said structure, this gets rid of oily structure and can also be set to as shown in figure 12, describedly get rid of oily structure and comprise the first ladder 100, the second ladder 200, between described the first ladder and the second ladder, by one, get rid of 300 transition of oily oblique angle and connect.
The oily structure of getting rid of in the present embodiment two is not limited to said structure, described in get rid of oily structure and comprise the first ladder, the second ladder, in described the first ladder and the second ladder joint, be provided with and get rid of oily half slot.
The utility model gas compressor end sealing configuration, inner oil pocket part every, hinder, get rid of oily structure, by above-mentioned design, throw to greatest extent the lubricant oil that is pooled to place, fit up gap away, effectively guide the flow direction of lubricant oil, cut off and change the path of oil leak, increase labyrinth seal progression and improve the ability that stops oil leak oil.So not only simple in structure, cost is low, sealing is strong, and can effectively stop gas compressor end lubricant oil from pressure side matching gap, to leak and to ooze when pressurized machine is worked, and also can effectively promote the ability of pressurized machine anti-negative pressure leakage of oil when engine idle is worked simultaneously.Specifically, oil return groove on back of the body dish (integrated type) or oil sealing cap (split type), keep off oily dam and effectively cut off and stop that there be machine oil the flowing to ingress, gap of pressure in pressurized machine when work, and the shaft seal of High Rotation Speed overlap on it arrange get rid of oily structure by work time centrifugal the throwing away of machine oil that gather, effectively stop lubricant oil entering from gap.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model know-why; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (4)
1. a gas compressor end sealing configuration for turbosupercharger, described gas compressor end sealing configuration comprises back of the body dish or oil sealing cap, shaft seal cover, the middle part of described back of the body dish or oil sealing cap is provided with the cylindrical body matching with shaft seal cover; It is characterized in that: keep off oily dam annular and be arranged at the outer rounded ends of described cylindrical body and on described cylindrical, form oil return groove, the outer rim of described shaft seal cover is provided with gets rid of oily structure.
2. the gas compressor end sealing configuration of turbosupercharger according to claim 1, is characterized in that: described in get rid of oily structure and comprise the first ladder, the second ladder, in described the first ladder and the second ladder joint, be provided with and get rid of oily half slot.
3. the gas compressor end sealing configuration of turbosupercharger according to claim 1, is characterized in that: described in get rid of oily structure and comprise the first ladder, the second ladder, between described the first ladder and the second ladder, by one, get rid of the transition of oily oblique angle and connect.
4. the gas compressor end sealing configuration of turbosupercharger according to claim 1, is characterized in that: described in get rid of oily structure and comprise the first ladder, the second ladder, in described the first ladder and the second ladder joint, be provided with and get rid of oily square groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205832.2U CN203906018U (en) | 2014-04-24 | 2014-04-24 | Compressor end sealing structure of turbocharger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420205832.2U CN203906018U (en) | 2014-04-24 | 2014-04-24 | Compressor end sealing structure of turbocharger |
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| Publication Number | Publication Date |
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| CN203906018U true CN203906018U (en) | 2014-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420205832.2U Expired - Fee Related CN203906018U (en) | 2014-04-24 | 2014-04-24 | Compressor end sealing structure of turbocharger |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594961A (en) * | 2014-04-24 | 2015-05-06 | 宁波摩多汽车零部件有限公司 | Gas compressor end sealing structure of turbocharger |
| CN106837983A (en) * | 2017-03-24 | 2017-06-13 | 山西国科节能有限公司 | There is the recessed rotating shaft put and get rid of oily tooth group spindle nose |
| 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 |
-
2014
- 2014-04-24 CN CN201420205832.2U patent/CN203906018U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104594961A (en) * | 2014-04-24 | 2015-05-06 | 宁波摩多汽车零部件有限公司 | Gas compressor end sealing structure of turbocharger |
| CN104594961B (en) * | 2014-04-24 | 2016-06-15 | 宁波摩多汽车零部件有限公司 | The compressor end of a kind of turbocharger seals structure |
| CN106837983A (en) * | 2017-03-24 | 2017-06-13 | 山西国科节能有限公司 | There is the recessed rotating shaft put and get rid of oily tooth group spindle nose |
| 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 |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20210908 Address after: 315800 No. 18, Tianlongshan Road, Daqi, Beilun, Ningbo, Zhejiang Patentee after: Ningbo moduo import and Export Co.,Ltd. Address before: 315804 c10-9f, No. 299, Guanghua Road, high tech Zone, Ningbo, Zhejiang Patentee before: NINGBO MODO AUTO PARTS Co.,Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141029 |