US20130028724A1 - Axial-radial turbomachine - Google Patents
Axial-radial turbomachine Download PDFInfo
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- US20130028724A1 US20130028724A1 US13/497,331 US201013497331A US2013028724A1 US 20130028724 A1 US20130028724 A1 US 20130028724A1 US 201013497331 A US201013497331 A US 201013497331A US 2013028724 A1 US2013028724 A1 US 2013028724A1
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- Prior art keywords
- axial
- radial
- dividing wall
- housing
- flow machine
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- 239000012530 fluid Substances 0.000 claims abstract description 40
- 125000006850 spacer group Chemical group 0.000 claims description 12
- 238000011835 investigation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/02—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal
- F04D17/025—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps having non-centrifugal stages, e.g. centripetal comprising axial flow and radial flow stages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
Definitions
- FIG. 2 shows an enlarged partial view of an area A in FIG. 1 .
- a heavy-duty industrial flow machine could have an outer dimensioning in radial direction RR of about 4000 mm, and the wall thickness S (in axial direction AR of the dividing wall 40 ) could amount to about 500 mm.
- a plurality of fixing units distributed in circumferential direction of the housing are arranged in the radial gap and each fixing unit axially fixes the dividing wall relative to the fluid guiding element.
- the dividing wall is reliably protected against excessive deformations in axial direction of the housing so that the dividing wall can be constructed with a reduced wall thickness compared to the prior art.
- a wall thickness (in axial direction) of the dividing wall can be reduced according to the invention from 500 mm to about 250 mm.
- Such a reduction in the wall thickness of the dividing wall can reduce the weight of the axial-radial flow machine by several tons, about 25 tons in the present example.
- an axial spacing of rotary bearings for the shaft carrying the impellers (which combine to form the rotor of the axial-radial flow machine) can be shortened so that the entire axial-radial flow machine can be constructed to be more compact and, in particular, axially shorter.
- the fluid guiding element can be formed by a return guide or a diffuser insert of the radial portion.
- the fixing units each have a projection at the dividing wall and/or at the fluid guiding element that bridges the radial gap in axial direction of the housing.
- the dividing wall is axially fixed to the fluid guiding element in a simple manner in the form of an axial supporting and/or axial holding of the dividing wall so that forces acting on the dividing wall axially proceeding from the axial portion in direction of the radial portion and/or proceeding from the radial portion in direction of the axial portion can be reliably absorbed.
- the threaded bolt would preferably be supported axially at the respective part (dividing wall or fluid guiding element) with which it does not threadedly engage so that, in this instance also, the dividing wall would be axially fixed to the fluid guiding element in the form of an axial supporting of the dividing wall so that forces acting axially on the dividing wall proceeding from the axial portion in direction of the radial portion can be reliably absorbed.
- each fixing unit also has a spacer sleeve arranged in the radial gap on the threaded bolt and that bridges the radial gap in axial direction of the housing.
- the threaded bolt is formed by a threaded screw having a shank portion which is provided with an external thread and a head portion which is formed so as to be larger than the shank portion, and the threaded bolt is inserted through a through-passage in the dividing wall proceeding from the first partial space so that the head portion is supported at the dividing wall on the first partial space side and the external thread of the shank portion engages with an internal thread in the fluid guiding element.
- FIG. 1 is a schematic sectional side view of an axial-radial flow machine
- FIG. 2 is a schematic partial view of an area A of the axial-radial flow machine of FIG. 1 according to the prior art
- FIG. 3 is a schematic partial view of an area A′ of the axial-radial flow machine of FIG. 1 viewed in a first section plane;
- FIG. 4 is a schematic partial view of an area A′ of the axial-radial flow machine of FIG. 1 viewed in a second section plane;
- the axial-radial flow machine 1 is formed by an axial-radial compressor (a compressor having an axial compressor and a radial compressor assembled to form a constructional unit).
- the axial-radial flow machine 1 has an axial portion 10 including a plurality of axial stages 11 , a radial portion 20 including a plurality of radial stages 21 , a housing 30 having an interior space which, by a dividing wall 40 ′ extending in a radial direction RR of the housing 30 , is divided in an axial direction AR of the housing 30 into a first partial space 31 in which the axial portion 10 is received and a second partial space 32 in which the radial portion 20 is received, and a shaft 50 which extends in axial direction AR through the interior space of the housing 30 and the dividing wall 40 ′ thereof and on which impellers 12 , 22 of the axial portion 10 and of the radial portion 20 are received.
- the radial portion 20 of the axial-radial flow machine 1 has a fluid guiding element 23 axially fixed to the housing 30 and constructed in the present instance as a return guide insert or diffuser insert for the individual stages 21 of the radial portion 20 .
- a radial gap RS opening into a diffuser channel 24 of the radial portion 20 is formed between the dividing wall 40 ′ and a section of the fluid guiding element 23 of the radial portion 20 adjacent to the dividing wall 40 ′.
- the fixing units 60 each form a projection which bridges the radial gap RS in axial direction AR of the housing 30 and which is mounted at the dividing wall 40 ′ and at the fluid guiding element 23 according to one embodiment and as will be described more fully in the following.
- the threaded bolt 61 is inserted through a through-passage (not separately shown) in the dividing wall 40 ′ in such a way that the head portion 61 b is supported on the side of the first partial space 31 in a recess or depression (not separately shown) at the dividing wall 40 ′ and the external thread of the shank portion 61 a engages with an internal thread (not separately shown) in the fluid guiding element 23 .
- the axial-radial flow machine 1 constructed as axial-radial compressor is a heavy-duty industrial flow machine having, for example, an external dimensioning in radial direction RR of about 4000 mm and a wall thickness S′ of the dividing wall 40 ′ of about 250 mm. Accordingly, the axial-radial flow machine 1 according to the invention realizes a reduction in weight of about 25 tons compared to the prior art axial-radial flow machine which was described by way of example in the introductory part with reference to FIG. 2 .
- a pressure in the radial portion 20 higher than that in the axial portion 10 by approximately 14 bar in an axial-radial flow machine having an outer dimensioning of approximately 4000 mm a maximum deformation path of the dividing wall 40 ′ toward the axial portion 10 of about 1.3 mm and a maximum tensile stress in the threaded bolt 61 of about 700 N/mm 2 were measured in the dividing wall 40 ′, having a wall thickness of 250 mm of the axial-radial flow machine 1 at an end of the dividing wall 40 ′ adjacent to the shaft 50 .
- the maximum deformation path of the dividing wall 40 ′ of the axial-radial flow machine 1 according to the invention is only about 80 percent of the maximum deformation path of the dividing wall 40 of the prior art axial-radial flow machine described above with reference to FIG. 2 .
- the inventors recognized in the course of investigations that the resulting deformation e.g., the deformation path, greatly depends upon the construction of the fluid guiding element 23 of the radial portion 20 ; that is, the fluid guiding element 23 should be constructed to be as stiff as possible and should be able to transmit the impinging forces into the outer area of the housing 30 as well as possible as is indicated by the deformation situation shown in FIG. 6 .
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Abstract
Axial-radial flow machine having an axial portion with at least one axial stage, a radial portion with at least one radial stage, a housing having an interior space with a dividing wall extending in a radial direction dividing the housing in an axial direction into a first partial space in which the axial portion is received and a second partial space in which the radial portion is received, and a shaft that extends in axial direction through the interior space and through the dividing wall and on which impellers of the axial portion and of the radial portion are received. A radial gap is formed between the dividing wall and a fluid guiding element of the radial portion. The fluid guiding element is axially fixed to the housing so as to be adjacent to the dividing wall. A plurality of fixing units which are distributed in circumferential direction are arranged in the radial gap, each of which fixing units axially fixes the dividing wall to the fluid guiding element.
Description
- This is a U.S. national stage of application No. PCT/DE2010/050030, filed on 25 May 2010. Priority is claimed on German, Application No. 10 2009 029 647.6, filed 21 Sep. 2009, the content of which is incorporated here by reference.
- 1. Field of the Invention
- The invention is directed to an axial-radial flow machine having an axial portion including at least one axial stage and a radial portion including at least one radial stage.
- 2. Detailed Description of Prior Art
- An axial-radial flow machine I as that shown in
FIG. 1 has anaxial portion 10 including a plurality ofaxial stages 11, aradial portion 20 including a plurality ofradial stages 21, ahousing 30 having an interior space which, by a dividingwall 40 extending in a radial direction RR of thehousing 30, is divided in an axial direction AR of thehousing 30 into a firstpartial space 31 in which theaxial portion 10 is received and a secondpartial space 32 in which theradial portion 20 is received, and ashaft 50 that extends in axial direction AR through the interior space of thehousing 30 and the dividingwall 40 thereof and on whichimpellers axial portion 10 and of theradial portion 20 are received. - Since the
shaft 50 extends through thedividing wall 40, a rigid structure of the dividingwall 40 is undermined, which makes the dividingwall 40 more susceptible to deformations, e.g., in axial direction AR of thehousing 30. For this reason, the dividingwall 40 is constructed in the prior art with a wall thickness S (seeFIG. 2 ) that is large enough to reduce deformations of the dividingwall 40 to a permissible level. - An example of a massive or large wall thickness S such as this is shown in
FIG. 2 which shows an enlarged partial view of an area A inFIG. 1 . For example, a heavy-duty industrial flow machine could have an outer dimensioning in radial direction RR of about 4000 mm, and the wall thickness S (in axial direction AR of the dividing wall 40) could amount to about 500 mm. - It can easily be seen that a wall thickness increased in this way considerably increases material costs and the weight of the axial-
radial flow machine 1. - It is an object of one embodiment of the invention to provide an axial-radial flow machine in which the dividing wall is reliably protected against excessive deformations in axial direction of the housing and can accordingly have a smaller wall thickness compared to the prior art.
- According to one embodiment of the invention, an axial-radial flow machine has an axial portion having at least one axial stage, a radial portion having at least one radial stage, a housing having an interior space with a dividing wall extending in a radial direction of the housing axially dividing the housing into a first partial space in which the axial portion is received and a second partial space in which the radial portion is received, and a shaft that extends in axial direction through the interior space of the housing and the dividing wall thereof and on which impellers of the axial portion and of the radial portion are received, wherein a radial gap is formed between the dividing wall and a fluid guiding element of the radial portion, which fluid guiding element is axially fixed to the housing so as to be adjacent to the dividing wall, and wherein a plurality of fixing units which are distributed in circumferential direction of the housing are arranged in the radial gap, each of which fixing units axially fixes the dividing wall to the fluid guiding element.
- According to one embodiment of the invention, a plurality of fixing units distributed in circumferential direction of the housing are arranged in the radial gap and each fixing unit axially fixes the dividing wall relative to the fluid guiding element. The dividing wall is reliably protected against excessive deformations in axial direction of the housing so that the dividing wall can be constructed with a reduced wall thickness compared to the prior art.
- For example, in a heavy-duty industrial flow machine which could have, for example, dimensions of about 4000 mm in radial direction, a wall thickness (in axial direction) of the dividing wall can be reduced according to the invention from 500 mm to about 250 mm. Such a reduction in the wall thickness of the dividing wall can reduce the weight of the axial-radial flow machine by several tons, about 25 tons in the present example.
- Further, by the reduction in the wall thickness of the dividing wall, an axial spacing of rotary bearings for the shaft carrying the impellers (which combine to form the rotor of the axial-radial flow machine) can be shortened so that the entire axial-radial flow machine can be constructed to be more compact and, in particular, axially shorter.
- The fluid guiding element can be formed by a return guide or a diffuser insert of the radial portion.
- According to one embodiment of the invention, the fixing units each have a projection at the dividing wall and/or at the fluid guiding element that bridges the radial gap in axial direction of the housing.
- In one embodiment of the invention, the dividing wall is axially fixed to the fluid guiding element in a simple manner in the form of an axial supporting and/or axial holding of the dividing wall so that forces acting on the dividing wall axially proceeding from the axial portion in direction of the radial portion and/or proceeding from the radial portion in direction of the axial portion can be reliably absorbed.
- According to one embodiment of the invention, the projections are formed in one piece with or integral with the dividing wall and/or fluid guiding element (e.g., as integral castings or lugs) or can also be mounted thereon as separate parts.
- According to one embodiment of the invention, the fixing units each have a threaded bolt that extends in axial direction of the housing through the dividing wall and fluid guiding element, wherein the threaded bolt threadedly engages with at least one of either the dividing wall or the fluid guiding element.
- In this case, the threaded bolt would preferably be supported axially at the respective part (dividing wall or fluid guiding element) with which it does not threadedly engage so that, in this instance also, the dividing wall would be axially fixed to the fluid guiding element in the form of an axial supporting of the dividing wall so that forces acting axially on the dividing wall proceeding from the axial portion in direction of the radial portion can be reliably absorbed.
- According to one embodiment of the invention, the threaded bolt can also threadedly engage with the dividing wall as well as with the fluid guiding element so that the dividing wall is axially fixed on both sides.
- According to one embodiment of the invention, each fixing unit also has a spacer sleeve arranged in the radial gap on the threaded bolt and that bridges the radial gap in axial direction of the housing.
- In this case, if desirable, the threaded bolt can serve merely to fix the spacer sleeve radially, since the spacer sleeve contacts both dividing wall and fluid guiding element axially and, accordingly, axially fixes the dividing wall to the fluid guiding element in the form of an axial support of the dividing wall so that forces acting axially on the dividing wall proceeding from the axial portion in direction of the radial portion can be reliably absorbed.
- According to one embodiment form of the invention, the threaded bolt is formed by a threaded screw having a shank portion which is provided with an external thread and a head portion which is formed so as to be larger than the shank portion, and the threaded bolt is inserted through a through-passage in the dividing wall proceeding from the first partial space so that the head portion is supported at the dividing wall on the first partial space side and the external thread of the shank portion engages with an internal thread in the fluid guiding element.
- In this embodiment of the invention, the dividing wall is axially fixed on both sides so that forces acting on the dividing wall axially in direction of the axial portion proceeding from the radial portion and in direction of the radial portion proceeding from the axial portion can be reliably absorbed.
- More precisely stated: the spacer sleeve acts as a spacer for an axial gap dimension of the radial gap on the one hand and as a support of the dividing wall against forces acting axially on the dividing wall proceeding from the axial portion in direction of the radial portion on the other hand. For axial holding of the dividing wall at the fluid guiding element, the threaded bolt acts against forces acting axially on the dividing wall proceeding from the radial portion in direction of the axial portion.
- According to one embodiment of the invention, the axial-radial flow machine is formed by an axial-radial compressor.
- According to this embodiment of the invention, there could be a considerable difference in pressure between the axial portion and radial portion, e.g., because a final stage of the radial portion is situated adjacent to the dividing wall. In this case, it may be that even if a final stage of the axial portion is arranged adjacent to the dividing wall, a force based on the difference in pressure acts on the dividing wall axially in direction from the radial portion to the axial portion because higher pressures can be generated by the radial portion than by the axial portion.
- Because the dividing wall is axially fixed according to the invention, particularly by a threaded bolt with head portion and shank portion constructed as a threaded screw, this load situation with respect to the dividing wall is also reliably contained.
- The invention will be described in more detail in the following with reference to a preferred embodiment form and the accompanying drawings.
-
FIG. 1 is a schematic sectional side view of an axial-radial flow machine; -
FIG. 2 is a schematic partial view of an area A of the axial-radial flow machine ofFIG. 1 according to the prior art; -
FIG. 3 is a schematic partial view of an area A′ of the axial-radial flow machine ofFIG. 1 viewed in a first section plane; -
FIG. 4 is a schematic partial view of an area A′ of the axial-radial flow machine ofFIG. 1 viewed in a second section plane; -
FIG. 5 are schematic perspective views with the axial-radial flow machine according toFIG. 3 andFIG. 4 in radial section in the area of the dividing wall; -
FIG. 6 is a schematic partial view of an area A′ of the axial-radial flow machine ofFIG. 1 showing a deformation situation of the dividing wall. - An axial-
radial flow machine 1 according to an embodiment form of the invention will be described in the following with reference toFIG. 1 andFIGS. 3 to 6 . According to one embodiment of the invention, the axial-radial flow machine 1 is formed by an axial-radial compressor (a compressor having an axial compressor and a radial compressor assembled to form a constructional unit). - The axial-
radial flow machine 1 according to the invention has anaxial portion 10 including a plurality ofaxial stages 11, aradial portion 20 including a plurality ofradial stages 21, ahousing 30 having an interior space which, by a dividingwall 40′ extending in a radial direction RR of thehousing 30, is divided in an axial direction AR of thehousing 30 into a firstpartial space 31 in which theaxial portion 10 is received and a secondpartial space 32 in which theradial portion 20 is received, and ashaft 50 which extends in axial direction AR through the interior space of thehousing 30 and the dividingwall 40′ thereof and on whichimpellers axial portion 10 and of theradial portion 20 are received. - The
radial portion 20 of the axial-radial flow machine 1 according to the invention has afluid guiding element 23 axially fixed to thehousing 30 and constructed in the present instance as a return guide insert or diffuser insert for theindividual stages 21 of theradial portion 20. A radial gap RS opening into adiffuser channel 24 of theradial portion 20 is formed between the dividingwall 40′ and a section of thefluid guiding element 23 of theradial portion 20 adjacent to the dividingwall 40′. - A plurality of
fixing units 60 distributed in a circumferential direction UR (seeFIG. 5 ) of thehousing 30 are arranged in the radial gap RS. Eachfixing unit 60 axially fixes the dividingwall 40′ to thefluid guiding element 23. - As can be seen from
FIG. 3 , for example, thefixing units 60 each form a projection which bridges the radial gap RS in axial direction AR of thehousing 30 and which is mounted at the dividingwall 40′ and at thefluid guiding element 23 according to one embodiment and as will be described more fully in the following. - The
fixing units 60 are preferably each a threadedbolt 61 formed as a threaded screw and which extends through the dividingwall 40′ andfluid guiding element 23 in axial direction AR of thehousing 30, and aspacer sleeve 62 which is arranged in the radial gap RS on the threadedbolt 61 and which bridges the radial gap RS in axial direction AR of thehousing 30 so that the spacer sleeve 62 contacts both the dividingwall 40′ and the fluid guiding element 23 (FIG. 4 ). - The threaded
bolt 61 has at an end thereof ashank portion 61 a provided with an external thread and ahead portion 61 b which is constructed so as to be larger than theshank portion 61 a. - As shown in
FIG. 4 , proceeding from the first partial space 31 (or from the axial portion 10), the threadedbolt 61 is inserted through a through-passage (not separately shown) in thedividing wall 40′ in such a way that thehead portion 61 b is supported on the side of the firstpartial space 31 in a recess or depression (not separately shown) at the dividingwall 40′ and the external thread of theshank portion 61 a engages with an internal thread (not separately shown) in thefluid guiding element 23. - In this way, with respect to forces acting axially on the dividing
wall 40′ proceeding from theradial portion 20 in direction of theaxial portion 20, the threadedbolt 61 forms a tie rod that reliably absorbs these forces and accordingly prevents excessive deformation of the dividingwall 40′ axially in direction of theaxial portion 10. - On the other side, the
spacer sleeve 62 acts as a spacer for an axial gap dimension of the radial gap RS on the one hand and, on the other hand, ensures an axial support of the dividingwall 40′ against forces acting axially on the dividingwall 40′ proceeding from theaxial portion 10 in direction of theradial portion 20 such as the forces exerted on the dividingwall 40′ by thehead portion 61 b of the threadedbolt 61 when this threadedbolt 61 is tightened. - According to one embodiment of the invention twelve (12)
fixing units 60 are provided as can be seen inFIG. 5 ; the threaded bolt is constructed, for example, as an M48 threaded screw. - According to one embodiment of the invention the axial-
radial flow machine 1 constructed as axial-radial compressor is a heavy-duty industrial flow machine having, for example, an external dimensioning in radial direction RR of about 4000 mm and a wall thickness S′ of the dividingwall 40′ of about 250 mm. Accordingly, the axial-radial flow machine 1 according to the invention realizes a reduction in weight of about 25 tons compared to the prior art axial-radial flow machine which was described by way of example in the introductory part with reference toFIG. 2 . - According to one embodiment of the invention, the axial-
radial flow machine 1 constructed as axial-radial compressor has a difference in pressure of about 14 bar between theaxial portion 10 and theradial portion 20 during operation of the axial-radial flow machine 1, the higher pressure being in theradial portion 20, for example. - This difference in pressure leads to a deformation of the dividing
wall 40′ in direction of theaxial portion 10. However, investigations conducted by the inventors showed that this deformation of the dividingwall 40′ could be kept within acceptable limits by the fixingunits 60 and, under the same operating conditions, could even be reduced compared to a deformation of the dividingwall 40 of the prior art axial-radial flow machine described in the introductory part with reference toFIG. 2 . - More precisely stated: with a pressure in the
radial portion 20 higher than that in theaxial portion 10 by approximately 14 bar in an axial-radial flow machine having an outer dimensioning of approximately 4000 mm, a maximum deformation path of the dividingwall 40′ toward theaxial portion 10 of about 1.3 mm and a maximum tensile stress in the threadedbolt 61 of about 700 N/mm2 were measured in the dividingwall 40′, having a wall thickness of 250 mm of the axial-radial flow machine 1 at an end of the dividingwall 40′ adjacent to theshaft 50. - On the other hand, with a pressure in the
radial portion 20 higher than that in theaxial portion 10 by approximately 14 bar in an axial-radial flow machine having an outer dimensioning of approximately 4000 mm a maximum deformation path of the dividingwall 40 toward theaxial portion 10 of about 1.7 mm was measured in the dividingwall 40 having a wall thickness of 500 mm of the prior art axial-radial flow machine described above with reference toFIG. 2 at an end of the dividingwall 40 adjacent to theshaft 50. - Therefore, the maximum deformation path of the dividing
wall 40′ of the axial-radial flow machine 1 according to the invention is only about 80 percent of the maximum deformation path of the dividingwall 40 of the prior art axial-radial flow machine described above with reference toFIG. 2 . - Further, the inventors recognized in the course of investigations that the resulting deformation e.g., the deformation path, greatly depends upon the construction of the
fluid guiding element 23 of theradial portion 20; that is, thefluid guiding element 23 should be constructed to be as stiff as possible and should be able to transmit the impinging forces into the outer area of thehousing 30 as well as possible as is indicated by the deformation situation shown inFIG. 6 . - Finally, the inventors also recognized in the course of investigations that the fixing
units 60, particularly thespacer sleeves 62 thereof, block the flow channel formed by the radial gap RS for a working fluid to be compressed in theradial portion 20 only by about 10 percent and the efficiency of theradial portion 20 is reduced by the fixingunits 60 only by a few tenths of a percent. - Thus, while there have shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form and details of the devices illustrated, and in their operation, may be made by those skilled in the art without departing from the spirit of the invention. For example, it is expressly intended that all combinations of those elements and/or method steps which perform substantially the same function in substantially the same way to achieve the same results are within the scope of the invention. Moreover, it should be recognized that structures and/or elements and/or method steps shown and/or described in connection with any disclosed form or embodiment of the invention may be incorporated in any other disclosed or described or suggested form or embodiment as a general matter of design choice. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.
Claims (12)
1-6. (canceled)
7. Axial-radial flow machine comprising:
an axial portion having at least one axial stage;
a radial portion having at least one radial stage;
a housing having an interior space;
a dividing wall arranged in the housing that extends in a radial direction of the housing that divides the housing in an axial direction into a first partial space in which the axial portion is received and a second partial space in which the radial portion is received;
a shaft that extends in axial direction through the interior space of the housing and the dividing wall on which respective impellers of the axial portion and of the radial portion are received; and
a fluid guiding element of the radial portion, which is axially fixed to the housing so as to be adjacent to the dividing wall, wherein a radial gap is formed between the dividing wall and the fluid guiding element of the radial portion; and
a plurality of fixing units distributed in circumferential direction of the housing and arranged in the radial gap, each of the plural fixing units axially fixing the dividing wall to the fluid guiding element.
8. The axial-radial flow machine according to claim 7 , wherein the plural fixing units each have a projection arranged at one of the dividing wall and at the fluid guiding element that bridges the radial gap in the axial direction of the housing.
9. The axial-radial flow machine according to claim 7 , wherein the plural fixing units are each configured as a threaded bolt extending in the axial direction of the housing through the dividing wall and the fluid guiding element, each threaded bolt threadedly engages with at least one of the dividing wall and the fluid guiding element.
10. The axial-radial flow machine according to claim 9 , wherein the plural fixing units each have a spacer sleeve arranged in the radial gap on the threaded bolt that bridges the radial gap in the axial direction of the housing.
11. The axial-radial flow machine according to claim 9 , wherein each threaded bolt is formed by a threaded screw having a shank portion provided with an external thread and a head portion formed so as to be larger than the shank portion, wherein each threaded bolt is inserted through a through-passage in the dividing wall proceeding from the first partial space so that the head portion is supported at the dividing wall on the side of the first partial space and the external thread of the shank portion engages with an internal thread in the fluid guiding element.
12. The axial-radial flow machine according to claim 7 , wherein the axial-radial flow machine is formed by an axial-radial compressor.
13. The axial-radial flow machine according to claim 8 , wherein the plural fixing units are each configured as a threaded bolt extending in the axial direction of the housing through the dividing wall and the fluid guiding element, each threaded bolt threadedly engages with at least one of the dividing wall and the fluid guiding element.
14. The axial-radial flow machine according to claim 13 , wherein the plural fixing units each have a spacer sleeve arranged in the radial gap on the threaded bolt that bridges the radial gap in the axial direction of the housing.
15. The axial-radial flow machine according to claim 14 , wherein each threaded bolt is formed by a threaded screw having a shank portion provided with an external thread and a head portion formed so as to be larger than the shank portion, wherein each threaded bolt is inserted through a through-passage in the dividing wall proceeding from the first partial space so that the head portion is supported at the dividing wall on the side of the first partial space and the external thread of the shank portion engages with an internal thread in the fluid guiding element.
16. The axial-radial flow machine according to claim 7 , wherein a external diameter of the axial-radial flow machine is about 4000 mm and a wall thickness of the dividing wall is less than about 500 mm.
17. The axial-radial flow machine according to claim 7 , wherein the dividing wall is about 250 mm.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE102009029647A DE102009029647A1 (en) | 2009-09-21 | 2009-09-21 | Axial-radial flow machine |
DE102009029647.6 | 2009-09-21 | ||
PCT/DE2010/050030 WO2011032549A1 (en) | 2009-09-21 | 2010-05-25 | Axial-radial turbomachine |
Publications (1)
Publication Number | Publication Date |
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US20130028724A1 true US20130028724A1 (en) | 2013-01-31 |
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ID=42556505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/497,331 Abandoned US20130028724A1 (en) | 2009-09-21 | 2010-05-25 | Axial-radial turbomachine |
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Country | Link |
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US (1) | US20130028724A1 (en) |
EP (1) | EP2480791A1 (en) |
JP (1) | JP2013505386A (en) |
CN (1) | CN102782330A (en) |
BR (1) | BR112012006262A2 (en) |
DE (1) | DE102009029647A1 (en) |
WO (1) | WO2011032549A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3011046A1 (en) * | 2013-09-26 | 2015-03-27 | Man Diesel & Turbo Se | COMPRESSOR DEVICE |
US10267328B2 (en) | 2015-07-21 | 2019-04-23 | Rolls-Royce Corporation | Rotor structure for rotating machinery and method of assembly thereof |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
HUE050519T2 (en) * | 2014-05-05 | 2020-12-28 | Exergy Int S R L | Radial turbomachine |
CN110999166B (en) * | 2017-09-07 | 2022-07-01 | 南通朗恒通信技术有限公司 | Method and device used in user equipment and base station for wireless communication |
JP6935312B2 (en) * | 2017-11-29 | 2021-09-15 | 三菱重工コンプレッサ株式会社 | Multi-stage centrifugal compressor |
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US3976395A (en) * | 1975-09-12 | 1976-08-24 | Igor Martynovich Kalnin | Multiple-stage centrifugal compressor |
US4057371A (en) * | 1974-05-03 | 1977-11-08 | Norwalk-Turbo Inc. | Gas turbine driven high speed centrifugal compressor unit |
US5042970A (en) * | 1989-11-28 | 1991-08-27 | Sundstrand Corporation | Fast recharge compressor |
US6935838B1 (en) * | 2003-03-19 | 2005-08-30 | Hi-Bar Blowers, Inc. | High pressure multi-stage centrifugal blower |
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DE338108C (en) * | 1919-05-20 | 1921-06-14 | Hans Kasparek | Centrifugal compressor for high pressure |
US2017826A (en) * | 1933-02-06 | 1935-10-15 | United Iron Works | Pump |
US3584973A (en) * | 1969-09-30 | 1971-06-15 | Ingersoll Rand Co | Modular turbo compressor unit |
US3809493A (en) * | 1970-06-08 | 1974-05-07 | Carrier Corp | Interchangeable compressor drive |
US3733145A (en) * | 1971-03-04 | 1973-05-15 | Nevsky Mash | Vand-type centrifugal machine, mainly, high-pressure compressor |
US3764236A (en) * | 1971-07-15 | 1973-10-09 | Carter Co J C | Modular pump |
US4251183A (en) * | 1978-01-30 | 1981-02-17 | The Garrett Corp. | Crossover duct assembly |
JPS58120000A (en) * | 1982-01-06 | 1983-07-16 | Hitachi Ltd | Diaphragm of rotary machine |
CA1252075A (en) * | 1983-09-22 | 1989-04-04 | Dresser Industries, Inc. | Diffuser construction for a centrifugal compressor |
US4579509A (en) * | 1983-09-22 | 1986-04-01 | Dresser Industries, Inc. | Diffuser construction for a centrifugal compressor |
JPH0613879B2 (en) * | 1986-04-24 | 1994-02-23 | ヤンマーディーゼル株式会社 | Vane fixing device for centrifugal compressor |
US5209652A (en) * | 1991-12-06 | 1993-05-11 | Allied-Signal, Inc. | Compact cryogenic turbopump |
WO2007064605A2 (en) * | 2005-11-30 | 2007-06-07 | Dresser-Rand Company | End closure device for a turbomachine casing |
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2009
- 2009-09-21 DE DE102009029647A patent/DE102009029647A1/en not_active Withdrawn
-
2010
- 2010-05-25 CN CN2010800422179A patent/CN102782330A/en active Pending
- 2010-05-25 WO PCT/DE2010/050030 patent/WO2011032549A1/en active Application Filing
- 2010-05-25 JP JP2012529121A patent/JP2013505386A/en active Pending
- 2010-05-25 US US13/497,331 patent/US20130028724A1/en not_active Abandoned
- 2010-05-25 EP EP10732634A patent/EP2480791A1/en not_active Withdrawn
- 2010-05-25 BR BR112012006262A patent/BR112012006262A2/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US4057371A (en) * | 1974-05-03 | 1977-11-08 | Norwalk-Turbo Inc. | Gas turbine driven high speed centrifugal compressor unit |
US3976395A (en) * | 1975-09-12 | 1976-08-24 | Igor Martynovich Kalnin | Multiple-stage centrifugal compressor |
US5042970A (en) * | 1989-11-28 | 1991-08-27 | Sundstrand Corporation | Fast recharge compressor |
US6935838B1 (en) * | 2003-03-19 | 2005-08-30 | Hi-Bar Blowers, Inc. | High pressure multi-stage centrifugal blower |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3011046A1 (en) * | 2013-09-26 | 2015-03-27 | Man Diesel & Turbo Se | COMPRESSOR DEVICE |
US10267328B2 (en) | 2015-07-21 | 2019-04-23 | Rolls-Royce Corporation | Rotor structure for rotating machinery and method of assembly thereof |
Also Published As
Publication number | Publication date |
---|---|
CN102782330A (en) | 2012-11-14 |
DE102009029647A1 (en) | 2011-03-24 |
EP2480791A1 (en) | 2012-08-01 |
BR112012006262A2 (en) | 2016-05-31 |
JP2013505386A (en) | 2013-02-14 |
WO2011032549A1 (en) | 2011-03-24 |
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Legal Events
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AS | Assignment |
Owner name: MAN DIESEL & TURBO SE, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LANGE, CHRISTOPH;RICHTER, ARNO;REEL/FRAME:028437/0212 Effective date: 20120404 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |
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Owner name: MAN ENERGY SOLUTIONS SE, GERMANY Free format text: CHANGE OF NAME;ASSIGNOR:MAN DIESEL & TURBO SE;REEL/FRAME:046818/0806 Effective date: 20180626 |