WO2015094339A1 - Turbine housing - Google Patents

Turbine housing Download PDF

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Publication number
WO2015094339A1
WO2015094339A1 PCT/US2013/076900 US2013076900W WO2015094339A1 WO 2015094339 A1 WO2015094339 A1 WO 2015094339A1 US 2013076900 W US2013076900 W US 2013076900W WO 2015094339 A1 WO2015094339 A1 WO 2015094339A1
Authority
WO
WIPO (PCT)
Prior art keywords
shroud
housing body
threaded
retaining ring
turbine housing
Prior art date
Application number
PCT/US2013/076900
Other languages
French (fr)
Inventor
Louis Y. NKOUKA
Original Assignee
Volvo Truck Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volvo Truck Corporation filed Critical Volvo Truck Corporation
Priority to PCT/US2013/076900 priority Critical patent/WO2015094339A1/en
Publication of WO2015094339A1 publication Critical patent/WO2015094339A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/143—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path the shiftable member being a wall, or part thereof of a radial diffuser
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2220/00—Application
    • F05D2220/40—Application in turbochargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2230/00—Manufacture
    • F05D2230/60—Assembly methods
    • F05D2230/64—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins
    • F05D2230/642—Assembly methods using positioning or alignment devices for aligning or centring, e.g. pins using maintaining alignment while permitting differential dilatation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2260/00—Function
    • F05D2260/30—Retaining components in desired mutual position
    • F05D2260/31—Retaining bolts or nuts

Definitions

  • the present invention relates to a turbine housing for a variable geometry turbine that secures the shroud against rotation relative to the turbine housing.
  • Turbines may be of a fixed or variable geometry type.
  • Variable geometry turbines differ from fixed geometry turbines in that the size of the inlet passageway can be adjusted to modify inlet gas flow velocities over a range of mass flow rates so that the power output of the turbine can be varied to suit engine demands.
  • one wall of the inlet passageway 10 includes a movable wall member 20 and the opposing side of the inlet passage is defined by a fixed wall 24.
  • a reference frame in the figures indicates the radial direction R and the axial direction A.
  • the position of the movable wall member 20 relative to the facing fixed wall 24 of the inlet passageway 10 is adjustable to control the width of the inlet passageway, that is, the gap between the movable wall member 20 and the fixed wall 24.
  • an actuator (not illustrated) is operationally connected to the movable wall to control the position of the movable wall. Exhaust gas passes through the inlet passageway 10 to the turbine wheel 12.
  • the movable wall member or the facing fixed wall is provided with guide vanes.
  • the movable wall is referred to as the "nozzle ring.”
  • the fixed wall 24 may include an annular cavity 40 covered by a shroud 30.
  • the shroud 30 forms part of the fixed wall 24.
  • guide vanes one vane 22 is shown
  • the guide vanes 22 extend from the nozzle ring 20 into the inlet passageway 10, through slots 13 lprovided in the shroud 30 and into the annular cavity 40 formed in the turbine housing 50.
  • FIG 2 is a simplified section view of the shroud seating portion 45 of the turbine housing 50 of Figure 1 that supports the shroud 30.
  • the vane 22 shown in Figure 1 is removed for clarity.
  • the shroud 30 is an annular member having on its radially inner margin a foot 32 to contact a first shoulder 52 formed on a radially inner portion of the wall defining the cavity 40.
  • the annular cavity 40 is shaped to provide support for the shroud 30 and includes a first shoulder 52 on a radially inner side and a second shoulder 56 on a radially outer side.
  • a lip or ledge 54 is formed at the radially outer side to provide an annular groove 55 between the lip 54 and the second shoulder 56.
  • the shroud 30 has on its outer margin spaced flanges 36, 38 that define a radially extending groove 34.
  • An inner flange 36 forms part of a surface of the fixed wall 24.
  • An outer flange 38 is spaced from the inner flange toward the cavity 40.
  • the shroud groove 34 accepts a retaining snap ring 60.
  • the retaining ring 60 contacts the lip 54 formed in the housing 50 and acts between the lip and the outer flange 38 to secure the shroud position in the housing 50.
  • the outer flange 38 is spaced from the second shoulder 56 and the force of the retaining ring 60 acting on the shroud 30 is transmitted to the foot 32, which is supported on the first shoulder 52.
  • a problem with this arrangement is that the shroud 30 is not secured against rotation relative to the turbine housing. Because the slots in the shroud must align with the guide vanes to permit free axial movement of the guide vanes as the movable wall member 20 is positioned to adjust the width of the inlet 10, rotation of the shroud results in contact between the shroud and guide vanes. Contact causes wear of both the shroud and guide vanes, and can cause a locking of the guide vanes on the shroud.
  • the present invention relates to a turbine housing for a variable geometry turbine that secures the shroud against rotation relative to the turbine housing.
  • a turbine housing comprises a housing body adapted to support a shroud.
  • the housing body is provided with an outer end.
  • the housing body defines a shroud seating portion and at least one threaded bore.
  • the at least one threaded bore extends axially from the outer end to the shroud seating portion and is adapted to receive a threaded member that contacts and prevents the shroud from rotating.
  • a method for providing a turbine housing capable of preventing a shroud from rotating relative to a housing body of the turbine housing comprises the step of providing at least one threaded bore that extends from an outer end of the housing body to a shroud seating portion defined by the housing body; and is adapted to receive a threaded member for contacting the shroud to prevent the shroud from rotating relative to the housing body.
  • a turbine housing comprises a housing body adapted to support a shroud.
  • the housing body is provided with an outer end.
  • the housing body defines a shroud seating portion and at least one threaded bore.
  • the at least one threaded bore extends axially from the outer end to the shroud seating portion and is adapted to receive a threaded member that contacts and prevents the shroud from rotating.
  • the turbine housing preferably includes the shroud installed in the shroud seating portion and the threaded member received by the at least one threaded bore and in contact with the shroud to prevent the shroud from rotating relative to the housing body.
  • the turbine housing further comprises a plurality of threaded bores that extend axially from the outer end to the shroud seating portion and that are adapted to receive threaded members that contact and prevent the shroud from rotating.
  • the turbine housing further comprises the shroud, a plurality of threaded bores that extend axially from the outer end to the shroud seating portion, and threaded members that are received by the plurality of threaded bores and that contact and prevent the shroud from rotating.
  • the turbine housing further comprises a retaining ring that receives the shroud and secures the shroud to the housing body and at least one threaded member that contacts the shroud so that the shroud is clamped between the at least one threaded member and the retaining ring to prevent the shroud from rotating relative to the housing body.
  • the turbine housing further comprises a retaining ring that receives the shroud and secures the shroud to the housing body and a plurality of threaded members that contact the shroud so that the shroud is clamped between the plurality of threaded members and the retaining ring to prevent the shroud from rotating relative to the housing body.
  • the turbine housing further comprises a retaining ring that receives the shroud and secures the shroud to the housing body
  • the retaining ring includes inner and outer flanges that define a shroud groove that accepts a retaining ring, and at least one threaded member contacts the outer flange of the shroud so that the shroud is clamped between the at least one threaded member and the retaining ring to prevent the shroud from rotating relative to the housing body.
  • the turbine housing further comprises a retaining ring that receives the shroud and secures the shroud to the housing body
  • the retaining ring includes inner and outer flanges that define a shroud groove that accepts a retaining ring, a plurality of threaded members contact the outer flange of the shroud so that the shroud is clamped between the plurality of threaded members and the retaining ring to prevent the shroud from rotating relative to the housing body.
  • the threaded member is a set screw.
  • a method for providing a turbine housing capable of preventing a shroud from rotating relative to a housing body of the turbine housing comprises the step of providing at least one threaded bore that extends from an outer end of the housing body to a shroud seating portion defined by the housing body and is adapted to receive a threaded member for contacting the shroud to prevent the shroud from rotating relative to the housing body.
  • the step of providing at least one threaded bore includes the step of providing a plurality of threaded bores that extend from an outer end of the housing body to a shroud seating portion defined by the housing body and are adapted to receive threaded members for contacting the shroud to prevent the shroud from rotating relative to the housing body.
  • Figure 1 is a simplified section view of a turbine housing showing an inlet passage, nozzle ring, and shroud arrangement according to the prior art.
  • Figure 2 is a simplified section view of the portion of the turbine housing of Figure 1 that supports the shroud.
  • Figure 3 depicts a sectional view of a turbocharger showing a turbine housing, shroud, and shroud anti-rotation lock according to one embodiment.
  • Figure 4 depicts and axial end view of the turbine housing according to one embodiment.
  • Figure 5 depicts area A of Figure 3 and shows a close up view of a turbine housing, shroud, and shroud anti-rotation lock prior to installation according to one embodiment.
  • Figure 6 depicts a close up view similar to Figure 4 of a turbine housing, shroud, and shroud anti-rotation lock installed in place according to one embodiment.
  • FIGS. 3 depict a turbo charger 110 with a turbine housing 150 according to one embodiment of the present invention.
  • the turbine housing 150 is provided with a housing body 150a that supports a shroud 130.
  • the shroud 130 is similar to the shroud 30 and is received by a retaining ring 160 that secures the shroud 130 to the housing body 150a.
  • the shroud may include inner and outer flanges 136, 138 defining a shroud groove 134 that accepts a retaining ring 160 to secure the shroud 130 in the housing body 150a.
  • the outer end 151 of the housing body 150a is configured to prevent rotation of the shroud 130.
  • the outer end 151 of the housing body 150a includes a plurality of threaded bores 152 that extend axially from the outer end 151 to the shroud seating portion 145.
  • four threaded bores 152 may be distributed in annular fashion; however it is within the scope of the present embodiment to provide more or less than four, including, at least one threaded bore 152.
  • the threaded bores 152 are adapted to receive a threaded member 153, such as, for example, but not limited to, a set screw, as shown.
  • the threaded members 153 are adapted to be screwed into the threaded bores 152 and tightened until the threaded members 153 contact the shroud 130 to prevent relative rotation of the shroud 130 with respect to the housing body 150a.
  • the threaded members 153 preferably contact and clamp the shroud 130. As shown, the threaded members may contact the outer flange 138 of the shroud 130 so that the shroud 130 is clamped between the threaded members 153 and the retaining ring 160. Those or ordinary skill in the art will appreciate that the clamping force exerted by the threaded members 153 provides a sufficient frictional coefficient between the shroud 130 and an end of the threaded members 153 to prevent the shroud 130 from rotating relative to the housing body 150a.
  • the shroud 130 is installed and guide vanes, such as guide vanes 22, are centered in slots 131 provided in the shroud 130 before installation of the threaded members 153.
  • guide vanes such as guide vanes 22
  • the shroud 130 can be locked in place to prevent rotation of the shroud relative to the housing body 150a and wearable contact between the shroud and guide vanes can be avoided.
  • the present description depicts specific examples to teach those skilled in the art how to make and use the best mode of the invention.
  • the detailed descriptions of the above embodiments are not exhaustive descriptions of all embodiments contemplated by the inventors to be within the scope of the invention.
  • the shroud 130 may be provided with one or more holes through which the one or more threaded members 153 extend.
  • the embodiment of FIGS. 3-6 has the advantage in that the threaded members 153 do not have to align with such holes on the shroud 130, however.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)

Abstract

The present invention relates to a turbine housing that includes a housing body adapted to support a shroud. The housing body is provided with an outer end and defines a shroud seating portion and at least one threaded bore that extends axially from the outer end to the shroud seating portion. The threaded bore is adapted to receive a threaded member that contacts and prevents the shroud from rotating.

Description

TURBINE HOUSING
FIELD OF THE INVENTION
The present invention relates to a turbine housing for a variable geometry turbine that secures the shroud against rotation relative to the turbine housing.
BACKGROUND OF THE INVENTION
Turbines may be of a fixed or variable geometry type. Variable geometry turbines differ from fixed geometry turbines in that the size of the inlet passageway can be adjusted to modify inlet gas flow velocities over a range of mass flow rates so that the power output of the turbine can be varied to suit engine demands.
In one common type of variable geometry turbine, illustrated in Figure 1, one wall of the inlet passageway 10 includes a movable wall member 20 and the opposing side of the inlet passage is defined by a fixed wall 24. A reference frame in the figures indicates the radial direction R and the axial direction A. The position of the movable wall member 20 relative to the facing fixed wall 24 of the inlet passageway 10 is adjustable to control the width of the inlet passageway, that is, the gap between the movable wall member 20 and the fixed wall 24. As is known in the art, an actuator (not illustrated) is operationally connected to the movable wall to control the position of the movable wall. Exhaust gas passes through the inlet passageway 10 to the turbine wheel 12.
Typically, either the movable wall member or the facing fixed wall is provided with guide vanes. In such arrangements, the movable wall is referred to as the "nozzle ring." The fixed wall 24 may include an annular cavity 40 covered by a shroud 30. The shroud 30 forms part of the fixed wall 24. In the illustrated example of Figure 1, guide vanes (one vane 22 is shown) are mounted on the nozzle ring 20. The guide vanes 22 extend from the nozzle ring 20 into the inlet passageway 10, through slots 13 lprovided in the shroud 30 and into the annular cavity 40 formed in the turbine housing 50.
Figure 2 is a simplified section view of the shroud seating portion 45 of the turbine housing 50 of Figure 1 that supports the shroud 30. The vane 22 shown in Figure 1 is removed for clarity. The shroud 30 is an annular member having on its radially inner margin a foot 32 to contact a first shoulder 52 formed on a radially inner portion of the wall defining the cavity 40. The annular cavity 40 is shaped to provide support for the shroud 30 and includes a first shoulder 52 on a radially inner side and a second shoulder 56 on a radially outer side. A lip or ledge 54 is formed at the radially outer side to provide an annular groove 55 between the lip 54 and the second shoulder 56. The shroud 30 has on its outer margin spaced flanges 36, 38 that define a radially extending groove 34. An inner flange 36 forms part of a surface of the fixed wall 24. An outer flange 38 is spaced from the inner flange toward the cavity 40. The shroud groove 34 accepts a retaining snap ring 60. The retaining ring 60 contacts the lip 54 formed in the housing 50 and acts between the lip and the outer flange 38 to secure the shroud position in the housing 50. The outer flange 38 is spaced from the second shoulder 56 and the force of the retaining ring 60 acting on the shroud 30 is transmitted to the foot 32, which is supported on the first shoulder 52.
A problem with this arrangement is that the shroud 30 is not secured against rotation relative to the turbine housing. Because the slots in the shroud must align with the guide vanes to permit free axial movement of the guide vanes as the movable wall member 20 is positioned to adjust the width of the inlet 10, rotation of the shroud results in contact between the shroud and guide vanes. Contact causes wear of both the shroud and guide vanes, and can cause a locking of the guide vanes on the shroud.
The present invention relates to a turbine housing for a variable geometry turbine that secures the shroud against rotation relative to the turbine housing.
SUMMARY OF THE INVENTION
According to one embodiment of the present invention, a turbine housing comprises a housing body adapted to support a shroud. The housing body is provided with an outer end. The housing body defines a shroud seating portion and at least one threaded bore. The at least one threaded bore extends axially from the outer end to the shroud seating portion and is adapted to receive a threaded member that contacts and prevents the shroud from rotating.
According to another embodiment of the present invention, a method for providing a turbine housing capable of preventing a shroud from rotating relative to a housing body of the turbine housing comprises the step of providing at least one threaded bore that extends from an outer end of the housing body to a shroud seating portion defined by the housing body; and is adapted to receive a threaded member for contacting the shroud to prevent the shroud from rotating relative to the housing body.
ASPECTS OF THE INVENTION
According to one aspect of the present invention, a turbine housing comprises a housing body adapted to support a shroud. The housing body is provided with an outer end. The housing body defines a shroud seating portion and at least one threaded bore. The at least one threaded bore extends axially from the outer end to the shroud seating portion and is adapted to receive a threaded member that contacts and prevents the shroud from rotating. Preferably, the turbine housing preferably includes the shroud installed in the shroud seating portion and the threaded member received by the at least one threaded bore and in contact with the shroud to prevent the shroud from rotating relative to the housing body.
Preferably, the turbine housing further comprises a plurality of threaded bores that extend axially from the outer end to the shroud seating portion and that are adapted to receive threaded members that contact and prevent the shroud from rotating.
Preferably, the turbine housing further comprises the shroud, a plurality of threaded bores that extend axially from the outer end to the shroud seating portion, and threaded members that are received by the plurality of threaded bores and that contact and prevent the shroud from rotating.
Preferably, the turbine housing further comprises a retaining ring that receives the shroud and secures the shroud to the housing body and at least one threaded member that contacts the shroud so that the shroud is clamped between the at least one threaded member and the retaining ring to prevent the shroud from rotating relative to the housing body.
Preferably, the turbine housing further comprises a retaining ring that receives the shroud and secures the shroud to the housing body and a plurality of threaded members that contact the shroud so that the shroud is clamped between the plurality of threaded members and the retaining ring to prevent the shroud from rotating relative to the housing body.
Preferably, the turbine housing further comprises a retaining ring that receives the shroud and secures the shroud to the housing body, the retaining ring includes inner and outer flanges that define a shroud groove that accepts a retaining ring, and at least one threaded member contacts the outer flange of the shroud so that the shroud is clamped between the at least one threaded member and the retaining ring to prevent the shroud from rotating relative to the housing body.
Preferably, the turbine housing further comprises a retaining ring that receives the shroud and secures the shroud to the housing body, the retaining ring includes inner and outer flanges that define a shroud groove that accepts a retaining ring, a plurality of threaded members contact the outer flange of the shroud so that the shroud is clamped between the plurality of threaded members and the retaining ring to prevent the shroud from rotating relative to the housing body.
Preferably, the threaded member is a set screw.
According to another aspect of the present invention, a method for providing a turbine housing capable of preventing a shroud from rotating relative to a housing body of the turbine housing comprises the step of providing at least one threaded bore that extends from an outer end of the housing body to a shroud seating portion defined by the housing body and is adapted to receive a threaded member for contacting the shroud to prevent the shroud from rotating relative to the housing body.
Preferably, the step of providing at least one threaded bore includes the step of providing a plurality of threaded bores that extend from an outer end of the housing body to a shroud seating portion defined by the housing body and are adapted to receive threaded members for contacting the shroud to prevent the shroud from rotating relative to the housing body.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is a simplified section view of a turbine housing showing an inlet passage, nozzle ring, and shroud arrangement according to the prior art.
Figure 2 is a simplified section view of the portion of the turbine housing of Figure 1 that supports the shroud.
Figure 3 depicts a sectional view of a turbocharger showing a turbine housing, shroud, and shroud anti-rotation lock according to one embodiment.
Figure 4 depicts and axial end view of the turbine housing according to one embodiment.
Figure 5 depicts area A of Figure 3 and shows a close up view of a turbine housing, shroud, and shroud anti-rotation lock prior to installation according to one embodiment.
Figure 6 depicts a close up view similar to Figure 4 of a turbine housing, shroud, and shroud anti-rotation lock installed in place according to one embodiment.
DETAILED DESCRIPTON OF THE INVENTION
FIGS. 3 depict a turbo charger 110 with a turbine housing 150 according to one embodiment of the present invention. As shown in FIGS. 3-6, the turbine housing 150 is provided with a housing body 150a that supports a shroud 130. The shroud 130 is similar to the shroud 30 and is received by a retaining ring 160 that secures the shroud 130 to the housing body 150a. As illustrated, the shroud may include inner and outer flanges 136, 138 defining a shroud groove 134 that accepts a retaining ring 160 to secure the shroud 130 in the housing body 150a.
As shown in FIGS. 3-6, the outer end 151 of the housing body 150a is configured to prevent rotation of the shroud 130. As shown, the outer end 151 of the housing body 150a includes a plurality of threaded bores 152 that extend axially from the outer end 151 to the shroud seating portion 145. As shown in FIG. 4, four threaded bores 152 may be distributed in annular fashion; however it is within the scope of the present embodiment to provide more or less than four, including, at least one threaded bore 152.
As shown in FIGS. 3, 5, and 6, the threaded bores 152 are adapted to receive a threaded member 153, such as, for example, but not limited to, a set screw, as shown.
Advantageously the threaded members 153 are adapted to be screwed into the threaded bores 152 and tightened until the threaded members 153 contact the shroud 130 to prevent relative rotation of the shroud 130 with respect to the housing body 150a.
The threaded members 153 preferably contact and clamp the shroud 130. As shown, the threaded members may contact the outer flange 138 of the shroud 130 so that the shroud 130 is clamped between the threaded members 153 and the retaining ring 160. Those or ordinary skill in the art will appreciate that the clamping force exerted by the threaded members 153 provides a sufficient frictional coefficient between the shroud 130 and an end of the threaded members 153 to prevent the shroud 130 from rotating relative to the housing body 150a.
Preferably, the shroud 130 is installed and guide vanes, such as guide vanes 22, are centered in slots 131 provided in the shroud 130 before installation of the threaded members 153. Advantageously in this manner the shroud 130 can be locked in place to prevent rotation of the shroud relative to the housing body 150a and wearable contact between the shroud and guide vanes can be avoided.
The present description depicts specific examples to teach those skilled in the art how to make and use the best mode of the invention. The detailed descriptions of the above embodiments are not exhaustive descriptions of all embodiments contemplated by the inventors to be within the scope of the invention. By way of example, although the present invention utilizes a clamping force and friction to prevent relative rotation between the shroud 130 and the turbine housing, in an alternative embodiment, within the scope of the present invention, the shroud 130 may be provided with one or more holes through which the one or more threaded members 153 extend. Relative to such an alternative embodiment, the embodiment of FIGS. 3-6 has the advantage in that the threaded members 153 do not have to align with such holes on the shroud 130, however.
Persons skilled in the art will recognize that certain elements of the above-described embodiments may variously be combined or eliminated to create further embodiments, and such further embodiments fall within the scope and teachings of the invention. It will also be apparent to those of ordinary skill in the art that the above-described embodiments may be combined in whole or in part to create additional embodiments within the scope and teachings of the invention. Thus, although specific embodiments of, and examples for, the invention are described herein for illustrative purposes, various equivalent modifications are possible within the scope of the invention, as those skilled in the relevant art will recognize. Accordingly, the scope of the invention is determined from the appended claims and equivalents thereof.

Claims

I CLAIM:
1. A turbine housing, comprising:
a housing body adapted to support a shroud, wherein the housing body is provided with an outer end and defines a shroud seating portion and at least one threaded bore that extends axially from the outer end to the shroud seating portion and is adapted to receive a threaded member that contacts and prevents the shroud from rotating.
2. The turbine housing according to claim 1, further comprising:
the shroud installed in the shroud seating portion; and
the threaded member received by the at least one threaded bore and in contact with the shroud to prevent the shroud from rotating relative to the housing body.
3. The turbine housing according to claim 1 , further comprising a plurality of threaded bores that extend axially from the outer end to the shroud seating portion and that are adapted to receive threaded members that contact and prevent the shroud from rotating.
4. The turbine housing according to claim 3, further comprising:
the shroud installed in the shroud seating portion; and
a plurality of threaded members that are received by the plurality of threaded bores and that contact the shroud to prevent the shroud from rotating relative to the housing body.
5. The turbine housing according to claim 2, further comprising a retaining ring that receives the shroud and secures the shroud to the housing body, wherein the at least one threaded member contacts the shroud so that the shroud is clamped between the at least one threaded member and the retaining ring to prevent the shroud from rotating relative to the housing body.
6. The turbine housing according to claim 4, further comprising a retaining ring that receives the shroud and secures the shroud to the housing body, wherein the plurality of threaded members contact the shroud so that the shroud is clamped between the plurality of threaded members and the retaining ring to prevent the shroud from rotating relative to the housing body.
7. The turbine housing according to claim 2, further comprising a retaining ring that receives the shroud and secures the shroud to the housing body, wherein:
the retaining ring includes inner and outer flanges that define a shroud groove that accepts a retaining ring;
the at least one threaded member contacts the outer flange of the shroud so that the shroud is clamped between the at least one threaded member and the retaining ring to prevent the shroud from rotating relative to the housing body.
8. The turbine housing according to claim 4, further comprising a retaining ring that receives the shroud and secures the shroud to the housing body, wherein:
the retaining ring includes inner and outer flanges that define a shroud groove that accepts a retaining ring;
the plurality of threaded members contact the outer flange of the shroud so that the shroud is clamped between the plurality of threaded members and the retaining ring to prevent the shroud from rotating relative to the housing body.
9. The turbine housing according to claim 2, wherein the threaded member is a set screw.
10. A method for providing a turbine housing capable of preventing a shroud from rotating relative to a housing body of the turbine housing, comprising the step of:
providing at least one threaded bore that:
extends from an outer end of the housing body to a shroud seating portion defined by the housing body; and
is adapted to receive a threaded member for contacting the shroud to prevent the shroud from rotating relative to the housing body.
11. The method for providing a housing body of a turbine housing capable of preventing a shroud from rotating relative to a housing body according to claim 10, wherein the step of providing at least one threaded bore includes the step of providing a plurality of threaded bores that:
extend from an outer end of the housing body to a shroud seating portion defined by the housing body; and
are adapted to receive threaded members for contacting the shroud to prevent the shroud from rotating relative to the housing body.
PCT/US2013/076900 2013-12-20 2013-12-20 Turbine housing WO2015094339A1 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107882600A (en) * 2016-09-30 2018-04-06 霍尼韦尔国际公司 The turbocharger of turbine shroud with port
WO2019220112A1 (en) * 2018-05-15 2019-11-21 Cummins Ltd Vanes and shrouds for a turbo-machine
USD946533S1 (en) 2019-11-15 2022-03-22 Cummins Ltd. Pin element
US11697997B2 (en) 2018-05-15 2023-07-11 Cummins Ltd. Vanes and shrouds for a turbo-machine

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Publication number Priority date Publication date Assignee Title
US3941500A (en) * 1974-06-10 1976-03-02 Westinghouse Electric Corporation Turbomachine interstage seal assembly
US20050120701A1 (en) * 2003-12-08 2005-06-09 Child Malcolm S. Nozzle bolting arrangement for a turbine
EP2431575A2 (en) * 2010-09-20 2012-03-21 Cummins Ltd Variable geometry turbine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3941500A (en) * 1974-06-10 1976-03-02 Westinghouse Electric Corporation Turbomachine interstage seal assembly
US20050120701A1 (en) * 2003-12-08 2005-06-09 Child Malcolm S. Nozzle bolting arrangement for a turbine
EP2431575A2 (en) * 2010-09-20 2012-03-21 Cummins Ltd Variable geometry turbine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107882600A (en) * 2016-09-30 2018-04-06 霍尼韦尔国际公司 The turbocharger of turbine shroud with port
CN107882600B (en) * 2016-09-30 2022-09-30 盖瑞特动力科技(上海)有限公司 Turbocharger with ported turbine shroud
WO2019220112A1 (en) * 2018-05-15 2019-11-21 Cummins Ltd Vanes and shrouds for a turbo-machine
CN112437833A (en) * 2018-05-15 2021-03-02 康明斯有限公司 Blade and shroud for a turbomachine
US11371369B2 (en) 2018-05-15 2022-06-28 Cummins Ltd. Vanes and shrouds for a turbo-machine
US11697997B2 (en) 2018-05-15 2023-07-11 Cummins Ltd. Vanes and shrouds for a turbo-machine
CN112437833B (en) * 2018-05-15 2024-03-12 康明斯有限公司 Blade and shroud for a turbomachine
USD946533S1 (en) 2019-11-15 2022-03-22 Cummins Ltd. Pin element

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