• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to an insert (1) as a burst protection device for a turbocharger (10), in particular a radial turbocharger, with a turbine housing (20) which comprises a turbine wheel (21) rotatably arranged in the turbine housing (20), the burst protection device (1) around the central axis (A) in the circumferential direction in an annular manner on the inner wall of the turbine housing (22) in order to at least partially encompass the turbine wheel (21), the burst protection device (1) having at least one first recess / cavity (2) , wherein the recess / cavity (2) in the burst protection device (1) is designed such that the kinetic energy of fragments of the turbine wheel (21) when it bursts due to the burst protection device (1) due to plastic deformation of the / the recess / cavity (2) is received and for this purpose the first recess / cavity (2) is opened on one side in the direction of the turbine housing (20).
    公开号:CH715597A2
    申请号:CH01357/19
    申请日:2019-10-24
    公开日:2020-05-29
    发明作者:Braun Steffen；Griesshaber Frank；Hort Vladimir；Krauss Roland；Thaser Boris
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    The invention relates to an insert as a burst protection device for a turbocharger, in particular a radial turbocharger, with a turbine housing, which comprises a turbine wheel rotatably arranged in the turbine housing.
    Currently known high-performance turbomachines, such as exhaust gas turbochargers of supercharged internal combustion engines, pose a high risk to their surroundings in the event of a technical failure of the rotating parts of the turbocharger. Especially when operating in situations in which people can be in the immediate vicinity of the turbomachine , it must be ensured that in the event of failure, ie When bursting, all parts are caught safely and completely and cannot injure anyone.
    In order to prevent the penetration of fragments through the outer wall of the turbocharger and thus the risk to people or damage to adjacent machine parts, the turbochargers were provided in the area radially outside the turbine impeller with relatively thick walls in the turbine housing. However, these solutions have a number of disadvantages, such as. B. the considerable additional weight of the housing and the risk of blowholes due to poor castability of such a turbine housing. In addition, such a thickened housing heats up differently, which can lead to thermal cracks.
    DE 42 23 496 A1 discloses a device for reducing the kinetic energy of bursting parts for machines rotating at high speed. This device, which is arranged inside an axial turbine, consists of a plurality of interconnected protective rings, between each of which a crumple zone made of ductile material is formed. However, such a solution is not suitable for radial turbines because, due to their radial gas entry, no burst protection devices can be used in the radial region of the turbine.
    From US Pat. No. 4,875,837 A a multi-layer burst protection is known, in which a heat-insulating material is introduced in an iron plate, and which is attached at a distance to a turbine housing and to a spiral part of the turbine housing. A disadvantage of the burst protection described there, however, is the fact that this burst protection only surrounds a 120 ° angular range of the spiral part of the housing and is therefore partially open.
    From the document DE 196 40 654 A1 a further burst protection is known, which is provided outside a gas inlet housing of a radial turbine for a turbocharger, which is designed as a spiral sheet metal shell and is detachably connected to the gas inlet housing by means of several screws.
    Furthermore, solutions are known in which curved sheets are arranged as a burst protection around the spiral, which, however, are structurally simple in order to reduce the manufacturing costs, but which have only limited strength and rigidity and also in terms of behavior behave unfavorably in response to the natural frequencies that occur in operation.
    It is therefore an object of the present invention to avoid said disadvantages and to provide an improved, easy to manufacture and safe burst protection device for radial turbines of turbochargers and thus to further improve the safety of turbochargers.
    This object is achieved by the combination of features according to claim 1.
    According to the invention, therefore, an insert is proposed as a burst protection device for a turbocharger, in particular a radial turbocharger, with a turbine housing which comprises a turbine wheel which is rotatably arranged in the turbine housing. The burst protection device is arranged in a ring around the central axis in the circumferential direction on the inner wall of the turbine housing in order to at least partially encompass the turbine wheel. The burst protection device has at least one first recess / cavity. This recess / cavity is formed in the burst protection device in such a way that the kinetic energy of fragments of the turbine wheel is absorbed by the burst protection device when the turbine wheel bursts due to plastic deformation of the burst protection device into the recess or cavity. For this purpose, the first recess is open on one side in the direction of the turbine housing.
    Due to the load-oriented design of the burst protection device close to the rotor, with the onset of initial damage, in particular the bursting of a rotor component, the kinetic energy contained therein can be reduced directly by targeted deformation in the area of the / the at least one recess / cavity and the forces occurring in structures that do not create a risk of injury to people nearby in the event of failure. A cavity is an empty or enclosed hollow space filled with a medium inside the burst protection device. A targeted deformation up to a desired local failure of the burst protection device is assumed to be appropriate to the load, so that an undesired load distribution to other structural areas is avoided. Due to a specific coordination of a rigidity of the burst protection device by means of the at least one recess / cavity, a maximum of rotational energy can already be dissipated inside the gas turbine engine in the event of damage. The geometric design of the recess is decisive for the absorption of the kinetic energy and for the deformation of the burst protection device. The effect of energy absorption is favored by the fact that the at least first cutout is open in the direction of the turbine housing, since forces which act in the direction of the turbine housing in this way initially cause the burst protection device to be deformed and portions of these forces are passed on to other structures before the forces be transferred to the turbine housing.
    In an advantageous embodiment, it is provided that the at least one first recess / cavity radially runs through the burst protection device in a completely channel-like manner. It is favorable that a recess is provided over the entire radial circumference of the burst protection device for receiving the kinetic energy of fragments of the turbine wheel when it breaks.
    [0013] The burst protection device is preferably formed in one piece. This simplifies the targeted adjustment of the rigidity and alignment of the deformation, since no further boundary conditions due to a multi-part burst protection device have to be taken into account. This favors energy absorption and power transmission.
    In one embodiment of the invention it is provided that the turbine housing inner wall has a turbine housing recess that passes through the turbine housing radially partially or completely and is open on one side in the direction of the burst protection device. It is advantageous that an area is formed by means of the turbine housing cut-out, which provides space for accommodating deformed areas of the burst protection device. As a result, the burst protection device initially deforms in the direction of the turbine housing recess and absorbs a large part of the kinetic energy of the burst turbine wheel components before this kinetic energy is passed directly on to the turbine housing.
    Furthermore, an embodiment is favorable in which the burst protection device has a second recess, which is separated and spaced from the first recess, the burst protection device runs radially partially or completely through a channel and is open on one side in the direction of the turbine housing. A further recess / cavity optimizes the burst protection device with regard to its deformation and absorption of the kinetic energy.
    Preferably, the burst protection device is designed so that the / the second recess / cavity is arranged in the radial direction opposite the turbine housing recess. Due to this arrangement of the / the recess / cavity, a deformation of the burst protection device in the direction of the turbine housing recess is favored.
    In a further advantageous variant it is provided according to the invention that the burst protection device between the / the first and second recess / cavity has a radially extending projection, which preferably abuts the end face of the turbine housing inner wall. It is favorable that the projection fixes the burst protection device against changes in position in the radial direction in the event of a fault-free operation due to the fact that it rests on the inner wall of the turbine housing. The protrusion abuts the turbine housing in an area adjacent to the turbine housing recess. In this way, the result is that when the burst protection device is deformed due to a burst turbine wheel, the projection deforms into the turbine housing cutout, as a result of which a large part of the kinetic energy of the burst turbine wheel components is first converted into the deformation energy of the burst protection device instead of all energy directly via the projection on the turbine housing to lead.
    The burst protection device according to the invention is designed in an embodiment variant that at least one recess / cavity has a filling for receiving at least part of the kinetic energy of fragments of the turbine wheel when it breaks. It is favorable that the filling consists of a plastically deformable material, which further optimizes the energy consumption by the burst protection device.
    It is further advantageous if a radially inward inner wall of the burst protection device forms an exhaust gas supply on one side and the burst protection device is funnel-shaped in a cross-sectional direction.
    [0020] In a further development of the present burst protection device, it is further provided that the inner wall of the burst protection device forms a flow channel with the turbine wheel.
    In an advantageous embodiment, an end section of the burst protection device lies against an outlet of the flow channel on the turbine housing inner wall, so that the opening of the / first recess / cavity, which is formed between the projection and the end section, is arranged completely on the turbine housing inner wall.
    A preferred embodiment provides that the burst protection device is detachably fixed to the turbine housing by means of fastening means.
    A further aspect of the present invention relates to a gas turbine engine, in particular a gas radial turbine engine, with a turbine housing which has a turbine wheel which is rotatably arranged in the turbine housing, and with a previously described burst protection device.
    [0024] Other advantageous developments of the invention are characterized in the subclaims or are shown in more detail below together with the description of the preferred embodiment of the invention with reference to the figures. It shows:<tb> Fig. 1 <SEP> is a perspective partial sectional view of an exemplary embodiment of a burst protection device for a gas turbine engine.
    The invention is described below with reference to FIG. 1 using an exemplary embodiment, the same reference numerals indicating the same structural and / or functional features.
    In Figure 1, a perspective partial sectional view of an embodiment of a burst protection device 1 for a gas turbine engine 10 is shown.
    The gas turbine engine 10 shown comprises a burst protection device 1 and a turbine housing 20 which has a rotatably arranged turbine wheel 21 and comprises this in its entirety. Furthermore, the one-piece burst protection device 1 is arranged adjacent to a central axis A on the turbine housing inner wall 22 and encompasses the turbine wheel 21 in this exemplary embodiment almost completely. The turbine housing inner wall 22 has a turbine housing recess 23 which is open on one side in the direction of the burst protection device 1.
    The burst protection device 1 comprises a first recess 2 and a second recess 3 separated and spaced from the first recess 2. The two recesses 2, 3 in the burst protection device 1 are designed such that the kinetic energy of fragments of the turbine wheel 21 is absorbed into the recesses 2, 3 by the burst protection device 1 due to plastic deformation of the material of the burst protection device 1. For this purpose, the first and the second recess 2, 3 are open on one side in the direction of the turbine housing 20. In addition, the second recess 3 is arranged opposite in the radial direction of the turbine housing recess 23.
    Furthermore, the burst protection device 1 has a projection 4 extending in the radial direction between the first and second recesses 2, 3. The end face of this projection 4 lies directly against the inner wall 22 of the turbine housing.
    Both cutouts 2, 3 of the burst protection device 1 have a filling 5 for receiving at least part of the kinetic energy of fragments of the turbine wheel 21 when it breaks, but alternatively can also only. An end section of the burst protection device 1 abuts the outlet of the flow channel 8 directly against the turbine housing inner wall 22. Thus, the opening of the first recess 2, which is formed between the projection 4 and the end section, is arranged completely on the turbine housing inner wall 22.
    The radially inward inner wall 7 of the burst protection device 1 forms an exhaust gas supply 6 on one side. In addition, the burst protection device 1 is funnel-shaped in the cross-sectional direction and the inner wall 7 of the burst protection device 1 forms a flow channel 8 with the turbine wheel 21.
    The burst protection device 1 is detachably fixed to the turbine housing 20 by means of fastening means 9.
    The embodiment of the invention is not limited to the preferred exemplary embodiments specified above. Rather, a number of variants are conceivable which make use of the solution shown, even in the case of fundamentally different types.
    权利要求:
    Claims (13)
    [1]
    1. insert (1) for a turbocharger (10), in particular a radial turbocharger, with a turbine housing (20) which comprises a turbine wheel (21) rotatably arranged in the turbine housing (20), the burst protection device (1) about a central axis (A) is arranged in the circumferential direction in an annular manner on the turbine housing inner wall (22) in order to at least partially encompass the turbine wheel (21), the burst protection device (1) having at least one first recess / cavity (2), this / r recess / cavity (2) in the burst protection device (1) is designed such that the kinetic energy of fragments of the turbine wheel (21) is absorbed by the burst protection device (1) due to plastic deformation of the / the recess / cavity (2) when it bursts is and the first recess / cavity (2) is opened on one side in the direction of the turbine housing (20).
    [2]
    2. insert (1) according to claim 1, characterized in that the / the at least one first recess / cavity (2) passes through the burst protection device (1) radially partially or completely channel-like.
    [3]
    3. insert (1) according to claim 1 or 2, characterized in that the burst protection device (1) is formed in one piece or in several parts.
    [4]
    4. insert (1) according to any one of claims 1 to 3, characterized in that the turbine housing inner wall (22) has a turbine housing recess (23) which passes through the turbine housing (20) radially partially or completely and opened on one side in the direction of the burst protection device (1) is.
    [5]
    5. Insert (1) according to one of claims 1 to 4, characterized in that the burst protection device (2) has further cutout cavities (3) which is / are separated and spaced from the first cutout / cavity (2) Burst protection device (1) runs radially partially or completely through a channel and is open on one side in the direction of the turbine housing (20).
    [6]
    6. insert (1) according to claim 5, characterized in that the / the second recess / cavity (3) is arranged in the radial direction opposite the turbine housing recess (23).
    [7]
    7. insert (1) according to one of claims 5 or 6, characterized in that the burst protection device (1) between the / the first and second recess / cavity (2, 3) has a radially extending projection (4) preferably abuts the end face of the turbine housing inner wall (22).
    [8]
    8. insert (1) according to one of claims 1 to 7, characterized in that at least one / e recess / cavity (2, 3) a filling (5) for receiving at least part of the kinetic energy of fragments of the turbine wheel (21) when it bursts.
    [9]
    9. insert (1) according to one of claims 1 to 8, characterized in that a radially inward inner wall (7) of the burst protection device (1) on one side forms an exhaust gas supply (6) and that the burst protection device (1) funnel-shaped in a cross-sectional direction is trained.
    [10]
    10. insert (1) according to one of claims 1 to 9, characterized in that the inner wall (7) of the burst protection device (1) with the turbine wheel (21) forms a flow channel (8).
    [11]
    11. Insert (1) according to one of claims 7 to 10, characterized in that an end portion of the burst protection device (1) abuts an outlet of the flow channel (8) on the turbine housing inner wall (22), so that the opening of the / the first recess / Cavity (2), which is formed between the projection (4) and the end portion, is arranged completely on the turbine housing inner wall (22).
    [12]
    12. Insert (1) according to one of claims 1 to 11, characterized in that the burst protection device (1) by means of fastening means (9) on the turbine housing (20) is removably fixed.
    [13]
    13. A gas turbine machine (10), in particular a gas radial turbine machine, with a turbine housing (20) which has a turbine wheel (21) rotatably arranged in the turbine housing (10), and a burst protection device (1) according to one of claims 1 to 12.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE2715729C3|1979-12-20|
    DE602005003199T2|2008-08-28|Improvement of a turbine starter by the use of a game seal
    DE102016002701A1|2016-09-15|Turbocharger turbine assembly
    WO2002090722A1|2002-11-14|Burst protection device for radial compressors pertaining to turbochargers
    DE102010043198A1|2012-05-03|Burst protection
    DE102013207452A1|2014-11-13|Housing portion of a turbomachinery compressor or turbomachinery turbine stage
    DE102016002722A1|2016-09-15|Turbocharger turbine nozzle and safety structure
    DE102004018987B4|2006-03-02|Protective device against bursting turbochargers comprises an endless looped belt of textile fiber material which has a high penetration resistance, and covers at least a part of the turbocharger circumference
    CH715597A2|2020-05-29|Insert for a turbocharger.
    DE4223496A1|1994-01-20|Reducing kinetic energy of bursting parts in turbines - involves crumple zone between inner and outer rings set between housing and rotor to absorb energy and contain fractured parts
    DE102013108609A1|2014-02-20|Cap system for turbine openings
    DE3444314A1|1985-06-13|AUXILIARY UNIT DRIVE AT A TURBINE
    CH703064A2|2011-10-31|Insert for a turbomachine and thus equipped turbomachine.
    WO2016041800A1|2016-03-24|Housing of a radial flow turbo-machine, and radial flow turbo-machine
    DE102012108973A1|2014-03-27|Bearing device and exhaust gas turbocharger
    DE10360055A1|2005-07-21|Hydrodynamic coupling
    EP3452702B1|2020-05-06|Turbine housing for a turbocharger of an internal combustion engine, and turbocharger
    EP2707629B1|2015-08-26|Apparatus for sealing off a pump space of a rotary piston pump, and rotary piston pump having same
    DE102018101066A1|2019-07-18|Bursting device for a gas turbine machine
    DE102011010673A1|2012-08-09|Housing for an exhaust gas turbocharger or a turbocompound system
    DE2836115C2|1982-06-03|Anti-burst device for a rotating body
    DE102016216959A1|2017-04-13|Turbine arrangement for air supply systems
    DE2238103A1|1973-02-15|CENTRIFUGAL IMPELLER
    DE102018114093A1|2019-12-19|Burst protection device for a gas turbine engine
    DE102019107093A1|2020-09-24|Securing the position of an exhaust turbocharger housing
    同族专利:
    公开号 | 公开日
    RU2019136602A|2021-05-14|
    US20200157968A1|2020-05-21|
    CN111197503A|2020-05-26|
    KR20200060272A|2020-05-29|
    DE102018129128A1|2020-05-20|
    JP2020084984A|2020-06-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH0459450B2|1985-09-18|1992-09-22|Hitachi Ltd|
    DE4223496A1|1992-07-17|1994-01-20|Asea Brown Boveri|Reducing kinetic energy of bursting parts in turbines - involves crumple zone between inner and outer rings set between housing and rotor to absorb energy and contain fractured parts|
    DE19640654A1|1996-10-02|1998-04-09|Asea Brown Boveri|Burst protection device for radial turbines of turbochargers|
    US6224321B1|1998-12-07|2001-05-01|Pratt & Whitney Canada Inc.|Impeller containment system|
    TW576886B|2001-05-04|2004-02-21|Abb Turbo Systems Ag|Turbocharger having a radial-flow compressor and burst-protection arrangement for a radial-flow compressor of a turbocharger|
    JP6012572B2|2013-09-25|2016-10-25|三菱重工業株式会社|Turbocharger|US11187149B2|2019-11-25|2021-11-30|Transportation Ip Holdings, Llc|Case-integrated turbomachine wheel containment|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102018129128.0A|DE102018129128A1|2018-11-20|2018-11-20|Insert for a turbocharger|
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