• 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:
    Turbo machine, with a housing (30), with an impeller received in the housing (30), the housing (30) having at least two housing parts (31, 32) connected to one another via a flange connection (33), a first housing part (31 ) the housing parts connected to one another via the flange connection (33) has threaded bores (35) for connecting screws (34), a second housing part (32) of the housing parts connected to one another via the flange connection (33) having through bores (37) for the connecting screws (34) , wherein the second housing part (32) rests on the first housing part (31) with a first surface (39) and wherein screw heads (41) of the connecting screws (34) lie on an opposite second surface (40) of the second housing part (32), and wherein the through bores (37) of the second housing part (32) on and adjacent to the second surface (40) have a smaller cross-sectional area than on and adjacent to the r first surface (39).
    公开号:CH716176A2
    申请号:CH00325/20
    申请日:2020-03-19
    公开日:2020-11-13
    发明作者:Löwlein Oswald；Strauss Matthias；Spengler Sebastian；Thaser Boris；Griesshaber Frank
    申请人:Man Energy Solutions Se；
    IPC主号:
    专利说明:

    The invention relates to a turbomachine according to the preamble of claim 1.
    The basic structure of a turbocharger is known to the person skilled in the art addressed here. A turbocharger has a turbine in which a first medium is expanded. Furthermore, a turbocharger has a compressor in which a second medium is compressed using the energy obtained in the turbine when the first medium is expanded.
    The turbine of the turbocharger has a turbine housing and a turbine rotor. The compressor of the turbocharger has a compressor housing and a compressor rotor. A bearing housing is positioned between the turbine housing of the turbine and the compressor housing of the compressor, the bearing housing being connected on the one hand to the turbine housing and on the other hand to the compressor housing. A shaft via which the turbine rotor is coupled to the compressor rotor is mounted in the bearing housing.
    The turbine housing of the turbine, the compressor housing of the compressor and / or the bearing housing can each consist of several housing parts which are connected to one another via a flange connection. The turbine housing can also be connected to the bearing housing and the compressor housing to the bearing housing, which then each form housing parts of the turbocharger, via flange connections.
    During operation of the turbocharger there is a risk that the compressor rotor or the turbine rotor will break and fragments of the broken rotor will break through the respective housing and thus get into the environment. This must be avoided for safety reasons.
    There is therefore a need for a turbomachine in which housing parts of a housing are connected to one another in such a way that there is no risk of the respective flange connection failing and fragments of the rotor getting into the environment.
    This is not only a requirement for turbochargers, but also for other flow machines, such as compressors, gas turbines, fans of exhaust gas recirculation devices and the like.
    Proceeding from this, the invention is based on the object of creating a novel flow machine. This object is achieved by a turbomachine according to claim 1. According to the invention, the through bores of the second housing part have a smaller cross-sectional area on and adjacent to the second surface than on and adjacent to the first surface.
    If, in the event of damage, a fragment of a rotor encounters one of the housing parts connected to one another via the flange connection and the housing parts connected to one another via the flange connection are moved or displaced relative to one another due to the kinetic energy of the fragment of the rotor, the risk is reduced that the connecting screws of the flange connection fail, for example, due to bending and / or shear stress. In the event of damage, a secure connection of housing parts connected to one another via a flange connection is accordingly ensured, which improves the so-called containment safety of the turbomachine.
    According to a first advantageous development, the cross-sectional area of the through bores of the second housing part increases from the second surface in the direction of the first surface, at least in sections continuously, in particular in a funnel-like or frustoconical manner. According to a second advantageous development, the cross-sectional area of the through bores of the second housing part increases in a step-like manner starting from the second area in the direction of the first area. With both advantageous developments, the containment security of the turbomachine can be increased. It is possible to combine these two advantageous developments with one another in such a way that the cross-sectional area of the through-holes increases continuously in a first area and the cross-sectional area of the through-holes increases in a step-like manner in the direction of the first area of the second housing part in a second area.
    The through-bores of the second housing part have a circular cross-sectional area on and adjacent to the second area. On and adjacent to the first surface, the through bores have a circular or oval or oblong cross-sectional area. These features also serve to increase the containment safety of the turbomachine.
    Sections of the through bores of the second housing part on and adjacent to the second surface run centrally or eccentrically to sections of the through bores of the second housing part on and adjacent to the first surface. This can also increase the containment safety of the turbomachine.
    Preferred developments of the invention emerge from the subclaims and the following description. Embodiments of the invention are explained in more detail with reference to the drawing, without being restricted thereto. It shows:<tb> Fig. 1 <SEP> a section from a flow machine according to the prior art in the area of a flange connection thereof;<tb> Fig. 2 <SEP> a section from a first turbo machine according to the invention in the area of a flange connection thereof;<tb> Fig. 3 <SEP> a section from a second turbomachine according to the invention in the area of a flange connection of the same<tb> Fig. 4 <SEP> shows a section from a third turbomachine according to the invention in the region of a flange connection thereof<tb> Fig. 5 <SEP> shows a section from a further flow machine according to the invention in the area of a flange connection of the same
    Fig. 1 shows a section of a flow machine according to the prior art in the area of a housing 10, namely in the area of two interconnected housing parts 11, 12. The two housing parts 11, 12 are connected to one another via a flange connection 13, which has several connecting screws 14. According to the prior art, the first housing part 11 of the housing parts 11, 12 connected to one another via the flange connection 13 comprises threaded bores 15 which interact with a threaded section 16 of the respective connecting screw 14. A second housing part 12 of the housing parts 11, 12 connected to one another via the flange connection 13 has through bores 17 for the connecting screws 14, with unthreaded sections 18 of the connecting screws 14 extending through these through bores 17.
    The second housing part 12, which has the through bores 17 for the connecting screws 14, rests with a first surface 19 on the first component 11. The connecting screws 14 with screw heads 21 rest on an opposite, second surface 20 of the second component 12.
    When, for example, in the event of damage to a rotor (not shown) of the turbomachine, a fragment of the rotor strikes one of the housing parts 11, 12 connected to one another via the flange connection 13 and, due to the kinetic energy of the fragment, a relative movement between the connected housing parts 11, 12, in particular in the direction of the arrow X shown in FIG. 1, the connecting screws 14 of the flange connection 13 are subject to bending and shear stresses, as a result of which there is a risk that the connecting screws 14 will shear off and thus fail. In this case, fragments can then get into the environment, but this should be avoided for safety reasons.
    2 shows a section from a first turbomachine according to the invention in the area of a housing 30, the housing 30 comprising the housing parts 31 and 32 which are connected to one another via a flange connection 33. The flange connection 33 has several connecting screws 34. A first housing part 31 of the housing parts 31, 32 connected to one another via the flange connection 33 in turn has threaded bores 35 for the connecting screws 34. Threaded sections 36 of the connecting screws 34 extend into or stand in the threaded bores 35 engaged with them. A second housing part 32 of the housing parts 31, 32 connected to one another via the flange connection 33 in turn has through bores 37 for the connecting screws 34, with threadless sections 38 of the connecting screws 34 extending through these through bores 37.
    The second housing part 32 with the through bores 37 in turn rests with a first surface 39 on the first component 31, the connecting screws 34 with their screw heads 41 resting on an opposite second surface 40 of the second component 32.
    In the turbomachine according to the invention, the through bores 37 of the second housing part 32 on and adjacent to the second surface 40 have a smaller cross-sectional area than on and adjacent to the first surface 39. It is provided in the embodiment of FIG. 2 that the cross-sectional area of Through-bores 37 of the second housing part 32, starting from the second surface 40 in the direction of the first surface 39, enlarged in a step-like manner, so that in FIG. 2 two sections 37a, 37b of the through-bore 37 are formed with different cross-sectional areas that are constant over their section length. The two sections 37a, 37b of the through hole 37 each have a circular cross-sectional area, i.e. both on and adjacent to the first surface 39 and on and adjacent to the second surface 40. These two sections 37a, 37b with a circular cross-section are shown in FIG of the through-hole 37 positioned eccentrically to one another, so that the longitudinal center axes of the sections 37a, 37b of the through-holes 37 do not lie on top of one another, but are offset parallel to one another.
    Due to the above configuration of the through bores 37, a larger cross-sectional area is provided in the interface area between the two components 31, 32 connected to one another via the flange connection 33 and thus via the connecting screws 34, which enables a stronger relative movement of the two connected components 31, 32 to one another allowed, whereby the risk of shearing off and thus failure of the connecting screws 34 is reduced. In the area of the second surface 40 of the second component 32 of the components 31, 32 connected to one another via the flange connection 33, however, a sufficiently large support surface is provided for the screw heads 41.
    Notwithstanding the embodiment shown in Fig. 2 with the two circular cross-section sections 37a, 37b of the through bores 37, which are eccentrically aligned with each other, it is also possible that the two sections 37a, 37b with circular cross-sectional areas centrally are positioned to each other.
    3 shows a section from a turbo machine according to the invention, again in the area of a housing 30, namely in the area of two connected housing parts 31, 32, which in turn are connected to one another via a flange connection 33. To avoid unnecessary repetition, the same reference numerals are used for the exemplary embodiment in FIG. 3 as in the exemplary embodiment in FIG. 2, with only those details being discussed below by which the exemplary embodiment in FIG. 3 differs from the exemplary embodiment in FIG. With regard to all other details, the exemplary embodiment in FIG. 3 corresponds to the exemplary embodiment in FIG. 1, so that reference is made to the statements relating to the exemplary embodiment in FIG. 2.
    In the embodiment of FIG. 3, too, the cross section of the through bores 37 expands in a step-like manner starting from the second surface 40 in the direction of the first surface 39 of the second component 32, with the second section 37b of the through bores 37 being adjacent to the first surface 39 in Fig. 3 is not circular in cross section, but rather has an oval or slot-like cross-sectional area. This follows in particular from the section B-B of FIG. 3, from which the elongated hole-like configuration of the section 37b of the through-hole 37 shown can be seen. On or adjacent to the second surface 40 of the second component 32, the section 37a of the respective through hole 37 again has a circular cross section.
    In Fig. 3, in contrast to Fig. 2, the two sections 37a, 37b of the respective through hole 37 are arranged centrally to one another, longitudinal center axes of the sections 37a, 37b accordingly coincide. In a departure from the exemplary embodiment shown in FIG. 3, it is also possible for the two sections 37a, 37b, that is to say the section 37a, which is circular in cross section, and the section 37b, which is elongated in cross section, to be positioned eccentrically to one another.
    Thus, while the exemplary embodiments of FIGS. 2 and 3 each show configurations of the through bores 37 in which the cross-sectional area of the through bores 37 of the second housing part 32 increases in steps starting from the second surface 40 in the direction of the first surface 39, FIGS 4 and 5 each cutout from flow machines according to the invention in the area of a housing 30, in which the through bores 37 of the respective second housing part 32 are designed such that the cross-sectional area of the through bores 37 of the second housing part 32 starting from the second surface 40 of the same in the direction the first surface 39 of the same and thus continuously enlarged in the direction of the respective first housing component 31, namely in the form of a funnel or a truncated cone.
    It is provided in the embodiment of FIG. 4 that the through-hole 37, which is continuously widening in terms of its cross-sectional area, has a circular cross-section over its entire extent, that is, both on and adjacent to the second surface 40 and on or adjacent to the first surface 39, whereas in FIG. 5 the through-hole 37 only has a circular cross-sectional area on or adjacent to the second surface 40, but is contoured oval or elongated-hole-like in cross section in the area or adjacent to the first surface 39 and between these two surfaces.
    The continuous cross-sectional enlargement can be carried out symmetrically or asymmetrically in relation to a longitudinal center axis of the through hole 37.
    The connecting screws 34 of the flange connections 33 of the exemplary embodiments of FIGS. 2 to 4 can be screws with a shaft, in particular with an expansion shaft, stud screws or the like.
    List of reference symbols
    10 housing 11 housing part 12 housing part 13 flange connection 14 connecting screw 15 threaded hole 16 threaded section 17 through hole 18 unthreaded section 19 surface 20 surface 21 screw head 30 housing 31 housing part 32 housing part 33 flange connection 34 connecting screw 35 threaded hole 36 threaded section 37 through hole 37a section 37b section 38 unthreaded Section 39 surface 40 surface 41 screw head
    权利要求:
    Claims (9)
    [1]
    1. flow machine,with a housing (30),with an impeller received in the housing (30),wherein the housing (30) has at least two housing parts (31, 32) connected to one another via a flange connection (33),wherein a first housing part (31) of the housing parts connected to one another via the flange connection (33) has threaded bores (35) for connecting screws (34),wherein a second housing part (32) of the housing parts connected to one another via the flange connection (33) has through bores (37) for the connecting screws (34),wherein the second housing part (32) rests against the first housing part (31) with a first surface (39) and wherein screw heads (41) of the connecting screws (34) lie against an opposite second surface (40) of the second housing part (32),characterized in thatthe through bores (37) of the second housing part (32) on and adjacent to the second surface (40) have a smaller cross-sectional area than on and adjacent to the first surface (39).
    [2]
    2. Turbomachine according to claim 1, characterized in that the cross-sectional area of the through bores (37) of the second housing part (32) increases continuously at least in sections from the second surface (40) in the direction of the first surface (39).
    [3]
    3. Turbomachine according to Claim 2, characterized in that the cross-sectional area of the through bores (37) increases in the manner of a funnel or a truncated cone.
    [4]
    4. Turbomachine according to one of claims 1 to 3, characterized in that the cross-sectional area of the through bores (37) of the second housing part (32) increases in steps starting from the second surface (40) in the direction of the first surface (39).
    [5]
    5. Turbo machine according to one of Claims 1 to 4, characterized in that the through bores (37) of the second housing part (32) have a circular cross-sectional area on and adjacent to the second surface (40).
    [6]
    6. Turbo machine according to one of Claims 1 to 5, characterized in that the through bores (37) of the second housing part (32) have a circular cross-sectional area on and adjacent to the first surface (39).
    [7]
    7. Turbo machine according to one of Claims 1 to 5, characterized in that the through bores (37) of the second housing part (32) on and adjacent to the first surface (39) have an oval or slot-like cross-sectional area.
    [8]
    8. Turbomachine according to one of claims 1 to 7, characterized in that sections (37a) of the through bores (37) of the second housing part (32) on and adjacent to the second surface (40) centrically to sections (37b) of the through bores (37) of the second housing part (32) extend on and adjacent to the first surface (39).
    [9]
    9. Turbomachine according to one of claims 1 to 7, characterized in that sections (37a) of the through bores (37) of the second housing part (32) on and adjacent to the second surface (40) eccentrically to sections (37b) of the through bores (37) of the second housing part (32) extend on and adjacent to the first surface (39).
    类似技术:
    公开号 | 公开日 | 专利标题
    EP2045444A1|2009-04-08|Rotor blade, method for producing a rotor blade, and compressor with such a rotor blade
    DE10352099B4|2017-08-24|Device for adjusting vanes
    DE10014198A1|2001-09-27|Blade arrangement for gas turbines etc. has damper elements located between neighboring rotor blades to engage on opposite distant blade surfaces
    EP3199758A1|2017-08-02|Rotor in blisk or bling structure of an aircraft engine
    CH714205A2|2019-03-29|Turbocharger.
    CH714160A2|2019-03-15|Formwork of a turbocharger and turbocharger.
    DE69913625T2|2004-06-09|gas turbine
    DE102019112055A1|2020-11-12|Turbo machine
    DE102006058678A1|2008-07-03|Method and device for surface blasting of a partial element of a component of a gas turbine
    EP1657404A1|2006-05-17|Turbomachine rotor, in particular gas turbine rotor
    CH714607A2|2019-07-31|Formwork of a turbocharger and turbocharger.
    EP2399005B1|2012-11-21|Blade union of a turbo machine
    EP3495625A1|2019-06-12|Adjustable turbo machine blade
    EP1731254A1|2006-12-13|Method of oscillating friction welding of workpieces with a closed groove on at leat one of the workpieces located near the welding zone
    DE102009010502B4|2012-08-23|Turbine blade, turbine blade and turbine
    DE102010001329A1|2011-08-18|Method for welding rotor disc of axial fluid flow machine e.g. gas turbine, involves checking quality of friction weld between intermediate elements, and welding intermediate elements with respective rotor discs
    DE19913265A1|2000-09-28|Turbomachine blade
    EP3477048A1|2019-05-01|Arrangement for sealing a gap between turbine blades and for reducing vibrations of the tips of turbine blades
    DE102018107304A1|2019-10-02|turbocharger
    CH714944A2|2019-10-31|Turbocharger.
    EP1754798A1|2007-02-21|Screw for a turbine housing
    CH711012B1|2019-09-13|Flow machine.
    EP2796665A2|2014-10-29|Exhaust gas turbocharger with a shaft made of various materials
    DE202019102568U1|2019-09-12|Turbocharger and carrier for connecting an assembly to a turbocharger
    DE102020201867A1|2021-08-19|Fiber-reinforced rotor blade for a turbomachine and method for manufacturing such a rotor blade
    同族专利:
    公开号 | 公开日
    RU2020114200A|2021-10-20|
    CN111911246A|2020-11-10|
    US20200355200A1|2020-11-12|
    JP2020186726A|2020-11-19|
    KR20200130170A|2020-11-18|
    DE102019112055A1|2020-11-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2970753B1|2011-01-26|2015-01-16|Airbus Operations Sas|CONNECTION DEVICE PARTICULARLY ADAPTED TO ENSURE THE CONNECTION BETWEEN AN AIR INLET AND A MOTORIZATION OF AN AIRCRAFT NACELLE|
    FR2998546B1|2012-11-23|2016-01-01|Airbus Operations Sas|AIRCRAFT NACELLE INCORPORATING AN IMPROVED CONNECTION BETWEEN AN AIR INLET AND A MOTORIZATION|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102019112055.1A|DE102019112055A1|2019-05-09|2019-05-09|Turbo machine|
    [返回顶部]