CN204921051U - Use sealing device between turbo charger turbine case and bearing body - Google Patents
Use sealing device between turbo charger turbine case and bearing body Download PDFInfo
- Publication number
- CN204921051U CN204921051U CN201520684215.XU CN201520684215U CN204921051U CN 204921051 U CN204921051 U CN 204921051U CN 201520684215 U CN201520684215 U CN 201520684215U CN 204921051 U CN204921051 U CN 204921051U
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- seal arrangement
- turbine box
- bearing support
- hot junction
- contact
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Abstract
The utility model discloses a sealing device uses between engine turbocharger's turbine case and bearing body, sealing device sets up on the installation locating surface III of turbine case, its metal material by having elasticity, ductility and certain thickness makes, ting sealing device sets up the bearing body with back between the turbine case, before the screw pretension of hot junction, the bearing body with contact surface I and turbine case installation face II when the turbine case assembles are in the isolation and mutual not contact State, behind the screw pretension of hot junction, elastic deformation takes place for sealing device, with produce new binding face between the installation locating surface III of turbine case, promptly sealed face IV. From this, weaken effectively and even eliminate this and locate the gas leakage hidden danger that exists to finally eliminate the performance degradation scheduling problem that causes in this booster working process of locating probably to cause.
Description
Technical field
The utility model relates to turbocharger of motor technical field, particularly a kind of seal arrangement be used between turbocharger turbine box and bearing support.
Background technique
Along with increasingly strict to the requirement of energy-saving and emission-reduction and Abgasgesetz regulation of country, supercharging technology has become the most effective technical measures of the emissions reduction of motor first-selection.And along with the raising of emission request, traditional technology for Turbocharger Manufacturing cannot meet the emission request of motor, particularly for low engine speed performance, all there is the problems such as exhaust emission is large, fuel consumption rate is larger in traditional turbocharging technology.In order to solve this technical problem, at present, motor adopts the technology such as common rail to reach emission request, so just propose variable cross section turbocharging technology (VGT or VNT).Variable cross section turbocharging technology is as a kind of exhaust-gas turbocharging system with variable boost ability, and it is by changing the cross-section area of nozzle thus can realizing different pressure ratios.After adopting variable cross section turbocharging technology, the low speed torque of diesel engine, smoke intensity and oil consumption are all than adopting the diesel engine of common pressurized machine to have clear improvement.In addition, variable cross section turbocharging technology also has and need not in the gas turbine process of conventional exhaust gas, install extra system on cold diesel engine additional and can provide the advantages such as coupling condition for high EGR rate.
VNT turbosupercharger is compared to traditional turbosupercharger, except control mode there occurs change, also there is larger change in the flow channel shape of its turbine box adopted, compared to traditional turbine box runner self contraction and and bearing support between good tightness, the flow channel shape more opening of the turbine box of VNT product, and the opening direction of runner is directly towards bearing support.Especially turbine box is different from the material of bearing support, thermal expansion coefficient is not identical yet, and operating ambient temperature is higher, if the tightness between bearing support and turbine box is good not, the part high-temp waste gas in turbine box runner will be caused to leak from laminating cylinder between the two, when leakage rate reaches certain value, the problems such as the hydraulic performance decline of pressurized machine and motor can be caused.Therefore, in order to promote the performance of pressurized machine better, realizing tightness good between turbine box and bearing support and also more seeming important.
For the foregoing reasons, in the structural design of turbosupercharger, design of Sealing Structure between turbine box and bearing support is very important, it not only has influence on structural reliability and the working life of turbosupercharger, but also have influence on the mechanical efficiency of turbosupercharger, therefore have good tightness between turbine box and bearing support and become one of key point ensureing turbosupercharger life and reliability.
At present, the bubble-tight main method improved between turbine box and bearing support mainly adopts the material that performance is more excellent, and adopts more high-precision machining dimension and fit tolerance, thus makes free gap between the two less.Such as, (application people is CNR Dalian Locomotive Research Institute Co., Ltd. to patent documentation CN102954210A, corresponding application number is 201210487308.4) disclose a kind of gas sealing structure of turbosupercharger, wherein in turbosupercharger, two air cavitys keep certain pressure difference, this structure make use of gas pressure difference, by the deformation force of thin-wall metal seal ring, seal between gas, material preferred elastomeric, the hard metal of sealing circle metal.But the lifting of material causes the significantly lifting of price, and this will become a weak tendency concerning striving for more client and the market share.In addition, higher machining accuracy is to the requirement also corresponding improve of equipment and operator, and this is also in a disguised form improving cost of production.
Moreover, (application people is BorgWarner Inc of the U.S. to patent documentation CN104271919A, application number is 201380023830.X) disclose a kind of axle sealing system for turbosupercharger, particularly, which disclose the effective sealing system of one for an interface between rotating element and surrounding structure in turbosupercharger, sealing system introduce a pair spring-loaded, self centering, the complementary sealing surfaces narrowed, sealing surface forces this to be joined together the sealing surfaces of complementation by means of spring pressure thus produces sealing and contacts and keep this contact.But because above-mentioned sealing system introduces the spring as biasing element, and the location of associated components and quality of fit require higher, therefore it is relatively costly to implement cost.
For above-mentioned phenomenon, the model utility people of the application, through studying intensively and testing repeatedly, designs a kind of novel sealing configuration to improve the tightness between turbine box and bearing support.
Model utility content
In view of above-mentioned the problems of the prior art point, the utility model aims to provide a kind of novel seal arrangement be used between turbocharger turbine box and bearing support.
The utility model relates to a kind of seal arrangement, be used between the turbine box of turbocharger of motor and bearing support, wherein said seal arrangement is arranged on the installation locating face III of described turbine box, and it is made by having elasticity, ductility and certain thickness metallic material; Be arranged on after between described bearing support and described turbine box by described seal arrangement, before the screw pretension of hot junction, surface of contact I when bearing support and turbine box assemble and turbine box attachment face II is in and isolates and mutual non-contact state; After the screw pretension of hot junction, described seal arrangement generation elastic strain, and produce new faying surface between the installation locating face III of described turbine box, i.e. sealing surface IV.
Preferably, the seal arrangement of the present utility model sealing gasket that to be shape be with circular protrusions.
Preferably, seal arrangement of the present utility model is shape is rectangular in cross-section, protruding towards side in the middle part of it, the seal ring that another side caves in the same direction.
For seal arrangement of the present utility model, before the screw pretension of described hot junction, by means of the width of described seal arrangement itself, surface of contact I and turbine box attachment face II is made to realize isolation and be not in contact with each other.
Preferably, the machine that seal arrangement of the present utility model is arranged on the installation locating face III being formed at described turbine box adds on face.
Preferably, the machine that seal arrangement of the present utility model is arranged on the installation locating face III being opened in described turbine box adds in groove.
Preferably, the shape of seal ring of the present utility model is V-type or U-shaped.
For seal arrangement of the present utility model, before the screw pretension of described hot junction, by the installation locating face making the width H2 of described seal arrangement be greater than described turbine box, the i.e. width H1 of seal groove, thus surface of contact I when bearing support and turbine box assemble and turbine box attachment face II realizes being not in contact with each other.
Owing to have employed above technological means, the utility model achieves its model utility object preferably.Particularly, in the utility model, by being arranged at the metal o-ring (sealing gasket) that turbine box is installed the seal groove (sealing station) on locating face and is arranged on sealing groove (sealing station), during assembling, due to the pretightening force of hot junction screw, sealing circle (sealing gasket) is made to produce elastic strain, form a new sealing surface, thus effectively weaken and even eliminate the gas leakage hidden danger of this place existence, and finally eliminate the problems such as the performance reduction caused in the pressurized machine working procedure that may cause at this place.
Accompanying drawing explanation
Accompanying drawing 1 (a) being used in involved by the utility model is between turbocharger turbine box and bearing support, the schematic diagram of seal arrangement before the screw in compression of hot junction; Local (A place) enlarged view that accompanying drawing 1 (b) is the seal arrangement before the screw in compression of hot junction; Local (A place) enlarged view that accompanying drawing 1 (c) is the seal arrangement after the screw in compression of hot junction.
Accompanying drawing 2 (a) being used in involved by the utility model is between turbocharger turbine box and bearing support, the schematic diagram of the first variation of seal arrangement before the screw in compression of hot junction; Local (B place) enlarged view that accompanying drawing 2 (b) is the seal arrangement before the screw in compression of hot junction; Local (B place) enlarged view that accompanying drawing 2 (c) is the seal arrangement after the screw in compression of hot junction.
Accompanying drawing 3 (a) being used in involved by the utility model is between turbocharger turbine box and bearing support, the schematic diagram of the second variation of seal arrangement before the screw in compression of hot junction; Local (C place) enlarged view that accompanying drawing 3 (b) is the seal arrangement before the screw in compression of hot junction; Local (C place) enlarged view that accompanying drawing 3 (c) is the seal arrangement after the screw in compression of hot junction.
Embodiment
In order to make the purpose of this utility model, technological scheme and advantage clearly understand, respectively the seal arrangement be used between novel turbocharger turbine box and bearing support of the present utility model is described in further detail below in conjunction with accompanying drawing 1 (a) ~ 1 (c) as above, accompanying drawing 2 (a) ~ 2 (c) and accompanying drawing 3 (a) ~ 3 (c).
It should be noted that, the statement such as such as " first " and " second " etc. used in mode of execution of the present utility model is all the parameters in order to the entity or non-equal distinguishing two same names non-equal, visible " first " " second " convenience only in order to state, should not be construed as the restriction to the utility model embodiment, subsequent embodiment illustrates no longer one by one to this.
In accompanying drawing 1 ~ accompanying drawing 3, reference character 1 represents turbine box, and reference character 2 represents seal ring (or sealing gasket), and reference character 3 represents bearing support.In addition, in above-mentioned accompanying drawing 1 ~ accompanying drawing 3 figure, the surface of contact of bearing support and turbine box when I represents assembling; II represents turbine box attachment face, and when not arranging seal ring or sealing gasket, turbine box attachment face II contacts completely with above-mentioned surface of contact I; III represents the installation locating face of turbine box, i.e. sealing station (or seal groove), and it is for fitting tight circle (or sealing gasket); IV represents Xinmi City's front cover that seal ring (or sealing gasket) is formed under the effect of hot junction pretightening force with bearing support.
Accompanying drawing 1 (a) being used in involved by the utility model is between turbocharger turbine box and bearing support, the schematic diagram of seal arrangement before the screw in compression of hot junction; Local (A place) enlarged view that accompanying drawing 1 (b) is the seal arrangement before the screw in compression of hot junction; Local (A place) enlarged view that accompanying drawing 1 (c) is the seal arrangement after the screw in compression of hot junction.When not arranging sealing gasket or seal ring, turbine box attachment face II is in the surface of contact I of turbine box the state contacted completely with bearing support.In present embodiment, in order to improve the tightness between turbine box 1 and bearing support 3, need to add a sealing gasket 2 between turbine box 1 and bearing support 3.Particularly, the size of first turbine box being installed locating face III suitably increases, then the sealing gasket 2 of a metal material is set on the installation locating face III of this turbine box, as shown in accompanying drawing 1 (a) ~ 1 (c), sealing pad 2 has certain thickness, the structure with circular protrusions can be adopted, and sealing spacer has good elasticity and ductility, before the screw pretension of hot junction, due to the width of sealing gasket 2 itself, surface of contact I and turbine box attachment face II is in and isolates and mutual non-contact state.As shown in accompanying drawing 1 (c), when assembling bearing support 3 and turbine box 1, after the screw in compression of hot junction, under the effect of the pretightening force of hot junction screw, bearing support 3 is pressed on sealing gasket 2, sealing pad 2 produces extension due to the extruding force be subject to from bearing support 3, so, just new faying surface is produced (namely between the circular protrusions and the installation locating face III of turbine box 1 of sealing pad 2, sealing surface) IV, thus the gap reduced between turbine box 1 and bearing support 3, therefore can reduce or even can eliminate under high-temperature work environment the air leakage amount at this place.
In addition, in technique scheme, replace above-mentioned sealing gasket, also between turbine box 1 and bearing support 3, the isomery seal ring 2 locating face III being arranged metal material can be installed at turbine box.The cross section of sealing circle 2 is roughly rectangular, and protruding towards side in the middle part of it, another side caves in the same direction.After being subject to fastening screw trip bolt pressure, slightly there is deformation in sealing circle 2, and produce new faying surface (namely between the installation locating face III of turbine box 1, sealing surface) IV, thus the gap reduced between turbine box 1 and bearing support 3, achieve the sealing to the gap between turbine box 1 and bearing support 3.And when pressurized machine works, due to high temperature action, there is expanded by heating in seal ring 2, thus make sealing more abundant.Especially, sealing circle 2 preferably adopts the larger material of thermal expansion coefficient to make.
First variation
Accompanying drawing 2 (a) being used in involved by the utility model is between turbocharger turbine box and bearing support, the schematic diagram of the first variation of seal arrangement before the screw in compression of hot junction; Local (B place) enlarged view that accompanying drawing 2 (b) is the seal arrangement before the screw in compression of hot junction; Local (B place) enlarged view that accompanying drawing 2 (c) is the seal arrangement after the screw in compression of hot junction.
As the variation of above-mentioned mode of execution, as shown in this accompanying drawing 2 (a) ~ 2 (c), in order to realize sufficient sealing effect, on the installation locating face III of turbine box 1, a newly-increased machine adds face, add on face at this machine and assemble a metal o-ring 2, and the width of sealing circle 2 adds size higher than machine.As shown in accompanying drawing 2 (a), before the screw pretension of hot junction, the width H2 due to seal ring 2 is greater than the width H1 of seal groove, makes the surface of contact I of bearing support 3 and turbine box attachment face II be in mutual non-contact state.As shown in accompanying drawing 2 (c), after the screw pretension of hot junction, due to the effect of pretightening force, bearing support 3 is pressed on the attachment face II of turbine box 1, above-mentioned surface of contact I and turbine box attachment face II starts to contact with each other, now, elastic strain is there is in the above-mentioned seal ring 2 being positioned at sealing station by compressing, and produce new faying surface (namely between bearing support 3, sealing surface) IV, and produce good sealing effect, thus effectively weaken and even eliminate the gas leak phenomenon of gas, better sealing effect is provided.
In addition, in this first variation, sealing circle 2 has good resistance to heat and elasticity, and its shape can be designed to V-type or U-shaped as required.And as described above, when pressurized machine works, due to high temperature action, there is expanded by heating in seal ring 2, thus make sealing more abundant.Especially, sealing circle 2 preferably uses the larger material of thermal expansion coefficient to make.
Second variation
Accompanying drawing 3 (a) is the involved schematic diagram being used in the second variation of the seal arrangement before between turbocharger turbine box and bearing support, hot junction screw in compression of the present utility model; Local (C place) enlarged view that accompanying drawing 3 (b) is the seal arrangement before the screw in compression of hot junction; Local (C place) enlarged view that accompanying drawing 3 (c) is the seal arrangement after the screw in compression of hot junction.
As another variation of above-mentioned mode of execution, as shown in accompanying drawing 3 (a) ~ 3 (c), also can between turbine box 1 and bearing support 3, the installation locating face III of turbine box offers one and adds groove for the machine placing isomery seal ring 2, and the width of this isomery seal ring 2 adds size higher than machine, adding groove by offering this machine, can prevent this isomery seal ring 2 from radial deflection occurring, ensure that this isomery seal ring 2 is coaxial with bearing support 3.Particularly, as shown in accompanying drawing 3 (a), before the screw pretension of hot junction, the width H2 due to isomery seal ring 2 is greater than the width H1 of seal groove, makes the surface of contact I of bearing support 3 and turbine box attachment face II be in mutual non-contact state.As shown in accompanying drawing 3 (c), after the screw pretension of hot junction, due to the effect of pretightening force, bearing support 3 is pressed on the installation locating face III of turbine box 1, above-mentioned surface of contact I and turbine box attachment face II starts to contact with each other.Now, be positioned at the isomery seal ring 2 of seal groove owing to be there is elastic strain by compressing, and between bearing support 3, produce new faying surface (that is, sealing surface) IV, produce good sealing effect thus, thus effectively weaken and even eliminate the gas leak phenomenon of gas.
Have again, in this second variation, isomery seal ring 2 requires to have good resistance to heat and elasticity, its shape can be designed to V-type or U-shaped as required, V-shaped seal ring can form new potted line under the effect of pretightening force, U-shaped seal ring then can form new sealing surface under the effect of pretightening force, and in theory, the latter's sealing effect is even better.
In above-mentioned cited technological scheme, the technological scheme of main mode of execution is the simplest, and cost is minimum, more applicable when not changing space, but sealing effect is relatively weak.And the cost of production of the technological scheme that the first and second variation adopt is higher, and the machining difficulty of technological scheme that this second variation adopts is larger, and the technological scheme of above-mentioned first variation more easily controls and realizes from mechanical processing technique, therefore different schemes can be selected under different machines adds surplus, and from sealing effect, the technological scheme that this second variation adopts is the most effective.
Below list by reference to the accompanying drawings and can solve technical task of the present utility model preferred embodiment.But those of ordinary skill in the field are to be understood that: the discussion of above any mode of execution is only exemplary, and not intended to be implies that the scope of the present disclosure (comprising claim) is limited to these examples.Under thinking of the present utility model, also can combine between technical characteristics in above mode of execution or different mode of execution, step can realize with random order, and there are other changes many of different aspect of the present utility model as above, for brevity, they do not provide in details.Therefore, all within spirit of the present utility model and principle, any omission made, amendment, equivalent replacement, improvement etc. all should be encompassed within protection domain of the present utility model.
Claims (9)
1. be used in the seal arrangement between turbocharger turbine box and bearing support, it is characterized in that,
Described seal arrangement is arranged on the installation locating face III of described turbine box, and it is made by having elasticity, ductility and certain thickness metallic material;
Be arranged on after between described bearing support and described turbine box by described seal arrangement, before the screw pretension of hot junction, surface of contact I when bearing support and turbine box assemble and turbine box attachment face II is in and isolates and mutual non-contact state;
After the screw pretension of hot junction, described seal arrangement generation elastic strain, and produce new faying surface between the installation locating face III of described turbine box, i.e. sealing surface IV.
2. seal arrangement according to claim 1, is characterized in that,
The described seal arrangement sealing gasket that to be shape be with circular protrusions.
3. seal arrangement according to claim 1, is characterized in that,
Described seal arrangement is shape is rectangular in cross-section, protruding towards side in the middle part of it, the seal ring that another side caves in the same direction.
4., according to the seal arrangement in claims 1 to 3 described in any one, it is characterized in that,
Before the screw pretension of described hot junction, by means of the width of described seal arrangement itself, described surface of contact I and described turbine box attachment face II is made to realize isolation and be not in contact with each other.
5. seal arrangement according to claim 1, is characterized in that,
The machine that described seal arrangement is arranged on the installation locating face III being formed at described turbine box adds on face.
6. seal arrangement according to claim 1, is characterized in that,
The machine that described seal arrangement is arranged on the installation locating face III being opened in described turbine box adds in groove.
7. the seal arrangement according to claim 5 or 6, is characterized in that,
The shape of described seal ring is V-type or U-shaped.
8. the seal arrangement according to claim 5 or 6, is characterized in that,
Before the screw pretension of described hot junction, by the installation locating face making the width H2 of described seal arrangement be greater than described turbine box, the i.e. width H1 of seal groove, thus surface of contact I when described bearing support and turbine box assemble and described turbine box attachment face II realizes being not in contact with each other.
9. seal arrangement according to claim 7, is characterized in that,
Before the screw pretension of described hot junction, by the installation locating face making the width H2 of described seal arrangement be greater than described turbine box, the i.e. width H1 of seal groove, thus surface of contact I when described bearing support and turbine box assemble and described turbine box attachment face II realizes being not in contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520684215.XU CN204921051U (en) | 2015-09-06 | 2015-09-06 | Use sealing device between turbo charger turbine case and bearing body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520684215.XU CN204921051U (en) | 2015-09-06 | 2015-09-06 | Use sealing device between turbo charger turbine case and bearing body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204921051U true CN204921051U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520684215.XU Expired - Fee Related CN204921051U (en) | 2015-09-06 | 2015-09-06 | Use sealing device between turbo charger turbine case and bearing body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204921051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089713A (en) * | 2015-09-06 | 2015-11-25 | 湖南天雁机械有限责任公司 | Sealing device used between turbine volute and bearing body of turbocharger |
| CN111197501A (en) * | 2018-11-19 | 2020-05-26 | 通用电气公司 | Seal assembly for a turbomachine |
-
2015
- 2015-09-06 CN CN201520684215.XU patent/CN204921051U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105089713A (en) * | 2015-09-06 | 2015-11-25 | 湖南天雁机械有限责任公司 | Sealing device used between turbine volute and bearing body of turbocharger |
| CN111197501A (en) * | 2018-11-19 | 2020-05-26 | 通用电气公司 | Seal assembly for a turbomachine |
| CN111197501B (en) * | 2018-11-19 | 2022-11-25 | 通用电气公司 | Seal assembly for a turbomachine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151230 Termination date: 20160906 |
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| CF01 | Termination of patent right due to non-payment of annual fee |