CN104594961A - Gas compressor end sealing structure of turbocharger - Google Patents
Gas compressor end sealing structure of turbocharger Download PDFInfo
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- CN104594961A CN104594961A CN201410168577.3A CN201410168577A CN104594961A CN 104594961 A CN104594961 A CN 104594961A CN 201410168577 A CN201410168577 A CN 201410168577A CN 104594961 A CN104594961 A CN 104594961A
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Abstract
The invention discloses a gas compressor end sealing structure of a turbocharger. The gas compressor end sealing structure comprises a back disk or an oil sealing cover and a shaft sealing sleeve. The middle of the back disk or the oil sealing cover is provided with a columnar body matched with the shaft sealing sleeve. An oil stop dam is annularly arranged at the end of the outer circle of the columnar body, and an oil return groove is formed in the outer circle. An oil throwing structure is arranged on the outer edge of the shaft sealing sleeve. The gas compressor end sealing structure is simple in structure, low in cost and high in sealing performance and oil leakage resistance. Specifically, the oil return groove and the oil stop dam of the back disk (integrated) or the oil sealing cover (split) effectively block and prevent engine oil under pressure from flowing to a gap inlet when the turbocharger works, the oil throwing structure arranged on the shaft sealing sleeve rotating at a high speed centrifugally throws off the engine oil gathered in the working process, and therefore lubricating oil is effectively prevented from entering the shaft sealing sleeve through a gap.
Description
Technical field
The present invention relates to a kind of turbosupercharger, particularly relate to a kind of gas compressor end sealing configuration of turbosupercharger.
Background technique
Internal-combustion engine is the mobile dynamic power machine that thermal effect that the current mankind can grasp is the highest, it meets the demand of various supporting machinery with excellent power character, reliability, Economy, the feature of environmental protection, be widely used in industrial or agricultural, road/vessel traffic transport, geology/oil drilling, the supporting the use of the extraordinary power of generating and national defence, for China infrastructure, communications and transportation, industrial or agricultural and the modernization of national defense and promotion and promote economic development, the aspect such as to uplift the people's living standard plays huge effect.
Along with the reinforcement of 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 adopts refrigeration technique in turbosupercharging to 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 export more powerful power when not changing motor volume, weight, save fuel oil reduction and discharge pollutants; The pressure lubrication oil that the gas compressor end sealing configuration of turbosupercharger only relies on to be provided from motor main oil gallery inputs the turbine shaft of TC bearings body hydrodynamic lubrication, carrying, cooling High Rotation Speed, because pressurized machine and motor only have the transitive relation of oil, gas, without any Mechanical Driven, the power of its not consumption of engine.
The problem that the gas compressor end sealing configuration of existing turbosupercharger is in use maximum is exactly leakage of oil, and the leakage oil impregnate of gas compressor end relatively seriously enjoys the concern of people.The mechanism of pressurized machine leakage of oil is: first, the gas compressor end sealing configuration of turbosupercharger is after engine startup operation, when being with idle operating mode, because motor does not load load, exhaust energy is limited, drive the speed of pressurized machine running very low, be not enough to make pressurized machine normally play adherence pressure and increase the effect of density of the induced air, and the now to-and-fro motion of engine piston really makes air inlet pipeline form negative pressure, such supercharger air compressor end is all in negative pressure state, if long-time idling work like this, when negative pressure is greater than resistance that supercharger air compressor end sealing configuration produces will lubricant oil and occurring--the roof leaking of anti-negative pressure scarce capacity in sucking-off bearing support.The second, when motor enters normal working on-load rotating speed, pressure lubrication oil leans on gravity reflux after entering the turbine shaft of TC bearings body hydrodynamic lubrication, carrying, cooling High Rotation Speed, requirement lubricant oil due to fuel delivery is bound to assemble and has certain pressure in oil pocket, and coordinate the gap location formed first to be thrown away by oil by the part moved at each component, secondly sealing configuration like labyrinth cooperatively interacts and prevents the seepage of lubricant oil, several typical supercharger structure layout from current home and abroad, what supercharger air compressor structural design was that back of the body dish (integrated type) or oil sealing cap (split type) and shaft seal overlap coordinate single order to seal, and (radial direction enters, direct axis flows to seal ring place), gap is radial arrangement, when the lubricant oil of supercharger air compressor end is overlapped the gap ejection coordinated by the thrust bearing in bearing support and shaft seal, through oil back chamber by gravity oil return, this makes pressurized machine when handing over variable working condition, radial gap (design having width limit) has the change of width, make do not had pump suction to be pressed into the possibility in gap by the lubricant oil thrown away, the leakage of oil of pressurized machine will be produced after being greater than the resistance of seal ring formation by the lubricant oil inhaling press-in under the effect of pump suction pressure, and oil return smooth time leakage of oil probability will significantly increase, Here it is has the reason of leaking oil impregnate when pressurized machine runs up often.
In prior art, turbosupercharger (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 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 form bearing support, pressure side seal ring 04 is loaded onto shaft seal cover 03 to reinstall the assembly that forms in the hole of back of the body dish 012 and load in turbine shaft 025, to be connected with bearing support with four sunk screws 09 and to tighten up.Above-mentioned gas compressor end sealing configuration is equipped with further again: 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, resistance to thermal screw 018 form complete turbosupercharger.
In prior art, as shown in Figure 3,4, pressurized machine moving element comprises turbine shaft assembly to turbosupercharger (split type), turbine shaft assembly by: turbine shaft 21, thrust plate 13, shaft seal overlap 12, impeller 3, locking nut 2 combine; The high temperature that turbine utilizes motor to discharge, high-speed exhaust gas drive and run up, and drive coaxial compressor impeller 3 synchronous high-speed running, suck and compress fresh air to be input in engine intake manifold; And intermediate 15 utilizes the oil inlet passage on it (comprising filler opening 22, return opening 23), the lubricant oil that motor input is come is delivered to the both sides of floating bearing 17, stop collar 16 inside and outside circle and thrust bearing 11, for support, lubrication, cooling turbine rotating shaft high speed, stable operation;
Turbine box 20, whirlpool end nut 14, thermal shield 18, intermediate 15, whirlpool end seal ring 19 are formed the gas circuit of whirlpool end and oil circuit and are separated 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 are formed the gas circuit of pressure side and oil circuit and are kept apart by pressure side seal ring 4; Thus ensure relatively independent, the reliably working of each several part.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of gas compressor end sealing configuration of turbosupercharger, to overcome the defect having when turbosupercharger runs up in prior art and leak oil impregnate.
For achieving the above object, the invention 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 matched with shaft seal cover; Keep off oily dam annular be arranged at the outer rounded ends of described cylindrical body and form oil return groove on described cylindrical, 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, be provided with at described first ladder and the second ladder joint and get rid of oily half slot.
Wherein, described in get rid of oily structure and comprise the first ladder, the second ladder, described 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, be provided with at described first ladder and the second ladder joint and get rid of oily square groove.
Compared with prior art, the invention has the beneficial effects as follows that not only structure is simple, cost is low, sealing is strong, and can effectively stop gas compressor end lubricant oil to ooze from the leakage of pressure side matching gap when pressurized machine works, also effectively can promote the ability of pressurized machine anti-negative pressure leakage of oil when engine idle works simultaneously.Specifically, oil return groove on back of the body dish (integrated type) or oil sealing cap (split type), keep off the flowing of machine oil to gap inlet having pressure when oily dam effectively cuts off and stops that pressurized machine works, and the shaft seal of High Rotation Speed is overlapped the oily structure of getting rid of that it is arranged and thrown away the machine oil that gathers is centrifugal during work, 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 partial enlargement structural representation 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 partial enlargement structural representation of gas compressor end sealing configuration in Fig. 3;
Fig. 5 is the sectional structure schematic diagram of turbosupercharger of the present invention (integrated type);
Fig. 6 is the partial enlargement structural representation of gas compressor end sealing configuration in Fig. 5;
Fig. 7 is that back of the body dish of the present invention overlaps the first the sectional structure schematic diagram after coordinating with shaft seal;
Fig. 8 is that back of the body dish of the present invention overlaps the second sectional structure schematic diagram after coordinating with shaft seal;
Fig. 9 is the sectional structure schematic diagram of turbosupercharger of the present invention (split type);
Figure 10 is the partial enlargement structural representation of gas compressor end sealing configuration in Fig. 9;
Figure 11 is that oil sealing cap of the present invention overlaps the first the sectional structure schematic diagram after coordinating with shaft seal;
Figure 12 is that oil sealing cap of the present invention overlaps the second sectional structure schematic diagram after coordinating with shaft seal.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Embodiment one:
As shown in Fig. 5,6,7, the present embodiment is substantially identical with turbosupercharger in prior art (integrated type), 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 overlaps 003 cylindrical body matched 1.5 with shaft seal; Keep off oily dam 1.6 annular be arranged at cylindrical 1.7 end of described cylindrical body 1.5 and form oil return groove 1.8 on described cylindrical, on back of the body dish 1.2 arrange oil return groove, keep off oily dam can be casting form also can be formed by machining, and the oil partition tank that oil return groove 1.8 is identical with implication, oil interceptor are equal to, keep off oily dam 1.6 oil protection wall identical with implication, flinger ring is 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, second ladder 2.2, be provided with at described first ladder 2.1 and the second ladder 2.2 joint and get rid of oily square groove 2.3.Be designed with the shaft seal cover getting rid of oily structure 2.0, be contained in as assembly after loading onto pressure side seal ring 04 and design and be manufactured with in the back of the body dish mider hole on oil return groove and the oily dam of gear, then be contained in sunk screw 09 on the bearing support of equipped good turbine shaft 025; Shaft seal cover and back of the body dish assemble the sealing labyrinth that the position that formed and gap form " Z " font 1.1.
The working principle of the present embodiment is as follows: on the back of the body dish forming oil back chamber, the oily dam of design one gear is to form oil return groove, on shaft seal cover, oily structure is got rid of in design, by the oil return groove on back of the body dish, keep off the matching gap place that oily dam isolation lubricating oil directly enters shaft seal cover and back of the body dish, and " Z " font gap of the rigging position and formation that keep off oily dam and shaft seal cover forms second order sealing, change the flow path of Lou oil impregnate simultaneously, oil is directly entered to change into by radial direction and axially enters, constitute second order sealing; And cover the oily dam of gear and reach back of the body dish and shaft seal and overlap matching gap (nothing designs width limit value, wider than existing structure, eliminating the impact of Axial changes on it) by getting rid of of putting of the shaft seal of High Rotation Speed, oily structure high-speed is centrifugal to be thrown away again for the lubricant oil at place, lubricant oil in such oil back chamber is through deadweight oil return, greatly can reduce and leak the probability of oil impregnate, the size in " Z " font gap simultaneously controlled well also can improve the ability of the anti-negative pressure leakage of oil of pressurized machine gas compressor end under idling operation.
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, second ladder 2.5, get rid of the transition of oily oblique angle 2.6 by one between described first ladder and the second ladder and connect.
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, be provided with at described first ladder and the second ladder joint and get rid of oily half slot.
Embodiment two:
As shown in Fig. 9,10,11, the present embodiment is substantially identical with turbosupercharger in prior art (split type), 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 matched with shaft seal cover; Keep off oily dam 1.13 annular be arranged at cylindrical 1.14 end of described cylindrical body and form oil return groove 1.15 on described cylindrical 1.14, the oil return groove that oil sealing cap is arranged, keep off oily dam can be casting form also can be formed by machining, and the oil partition tank that oil return groove 1.15 is identical with implication, oil interceptor are equal to, keep off oily dam 1.13 oil protection wall identical with implication, flinger ring is 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, second ladder 1.19, be provided with at described first ladder and the second ladder joint and get rid of oily square groove 1.20.Be designed with the shaft seal cover getting rid of oily structure, be contained in as assembly after loading onto pressure side seal ring 4 and design and be manufactured with in the oil sealing cap mider hole on oil return groove and the oily dam of gear, then be contained in sunk screw 5 on the bearing support of equipped good turbine shaft 21; Shaft seal cover and oil sealing cap assemble the sealing labyrinth that the position that formed and gap form " Z " font 1.21.
The working principle of the present embodiment is as follows: on the oil sealing cap forming oil back chamber, the oily dam of design one gear is to form oil return groove, on shaft seal cover, oily structure is got rid of in design, 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 " Z " font gap of the rigging position and formation that keep off oily dam and shaft seal cover forms second order sealing, change the flow path of Lou oil impregnate simultaneously, oil is directly entered to change into by radial direction and axially enters, constitute second order sealing; And cover the oily dam of gear and reach oil sealing cap and shaft seal and overlap matching gap (nothing designs width limit value, wider than existing structure, eliminating the impact of Axial changes on it) by getting rid of of putting of the shaft seal of High Rotation Speed, oily structure high-speed is centrifugal to be thrown away again for the lubricant oil at place, lubricant oil in such oil back chamber is through deadweight oil return, greatly can reduce and leak the probability of oil impregnate, the size in " Z " font gap simultaneously controlled well also can improve the ability of the anti-negative pressure leakage of oil of pressurized machine gas compressor end under idling operation.
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, second ladder 200, get rid of the transition of oily oblique angle 300 by one between described first ladder and the second ladder and connect.
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, be provided with at described first ladder and the second ladder joint and get rid of oily half slot.
Gas compressor end sealing configuration of the present invention, inner oil pocket local every, hinder, get rid of oily structure, by above-mentioned design, throw the lubricant oil being pooled to fit up gap place to greatest extent away, the flow direction of effective guiding lubricant oil, cut off and change the path of oil leak, increasing labyrinth seal progression and improve the ability stoping oil leak oil.So not only structure is simple, cost is low, sealing is strong, and gas compressor end lubricant oil effectively can be stoped to ooze from the leakage of pressure side matching gap when pressurized machine works, also effectively can promote the ability of pressurized machine anti-negative pressure leakage of oil when engine idle works simultaneously.Specifically, oil return groove on back of the body dish (integrated type) or oil sealing cap (split type), keep off the flowing of machine oil to gap inlet having pressure when oily dam effectively cuts off and stops that pressurized machine works, and the shaft seal of High Rotation Speed is overlapped the oily structure of getting rid of that it is arranged and thrown away the machine oil that gathers is centrifugal during work, effectively stop lubricant oil entering from gap.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
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, and the middle part of described back of the body dish or oil sealing cap is provided with the cylindrical body matched 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 form oil return groove on described cylindrical, 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, be provided with at described first ladder and the second ladder joint 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, get rid of the transition of oily oblique angle by one between described first ladder and the second ladder 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, be provided with at described first ladder and the second ladder joint and get rid of oily square groove.
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CN201410168577.3A CN104594961B (en) | 2014-04-24 | 2014-04-24 | The compressor end of a kind of turbocharger seals structure |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108457751A (en) * | 2017-02-20 | 2018-08-28 | 博世马勒涡轮系统有限两合公司 | Bear box and exhaust-driven turbo-charger exhaust-gas turbo charger with this shell |
CN109026361A (en) * | 2018-09-18 | 2018-12-18 | 湖南天雁机械有限责任公司 | A kind of New type gland cover used in turbocharger |
JP2021008732A (en) * | 2019-06-28 | 2021-01-28 | 新明和工業株式会社 | Guidance device, mechanical parking facility and guiding method |
CN112922721A (en) * | 2021-04-09 | 2021-06-08 | 娄宝华 | Timely response turbocharger for automobile engine |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN112922721A (en) * | 2021-04-09 | 2021-06-08 | 娄宝华 | Timely response turbocharger for automobile engine |
CN112922721B (en) * | 2021-04-09 | 2022-08-05 | 常州市佳科汽车零部件有限公司 | Timely response turbocharger for automobile engine |
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