EP2483567A1 - Diffuseur de compresseur radial - Google Patents
Diffuseur de compresseur radialInfo
- Publication number
- EP2483567A1 EP2483567A1 EP10760303A EP10760303A EP2483567A1 EP 2483567 A1 EP2483567 A1 EP 2483567A1 EP 10760303 A EP10760303 A EP 10760303A EP 10760303 A EP10760303 A EP 10760303A EP 2483567 A1 EP2483567 A1 EP 2483567A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- radial
- diffuser
- radius
- radial compressor
- section
- Prior art date
- Legal status (The legal status 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 status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
-
- 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
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
Definitions
- Radial compressor diffuser The invention relates to a radial compressor diffuser for a radial compressor stage, wherein the radial compressor diffuser has a radial diffuser outlet blading.
- Radial compressor stages are used in different types of turbocompressors. In this case, the type of flow guidance in the radial compressor stages depending on
- the flow guide in radial compressors has an impeller, a radial diffuser, and a discharge housing as essential elements. This applies in particular to the flow guidance of
- the radial diffuser can be designed as a shovelless or as a bladed diffuser.
- the outflow housing is usually as
- Mismatched spiral housing often has a particularly negative impact on the operating behavior of the compressor stage.
- Blades which can lead to a vibration excitation of the highly loaded impeller. So is one
- the object of the invention is to a centrifugal compressor
- a radial compressor diffuser for a radial compressor stage comprising a
- Flow channel which extends radially outwardly and radially inwardly lying at a first radius cylindrically encircling inlet cross-section and radially outward lying a cylindrical circumferential outlet cross-section and which is designed such that during operation of the
- Radial compressor diffuser one arranged from a directly upstream of the radial compressor diffuser
- Outlet cross section in the flow channel is a
- Radial compressor impeller is and that their radial extent terminates inwardly at a third radius, wherein the
- Ratio of the third radius to the first radius is at least 1.2. According to the invention is also a
- Guiding blading is used, which causes a nearly constant outflow angle with the value c even with variation of the volume flow along the characteristic, whereby an optimal inflow to the spiral is achieved in the entire range of the curve and losses in efficiency and compressor ⁇ work can be avoided.
- the radial diffuser outlet blading of the radial compressor diffuser has a plurality of guide vanes arranged over the circumference, the leading edges of which are arranged circumferentially at the third radius.
- the plurality of guide vanes arranged over the circumference preferably has trailing edges which are arranged circumferentially in a region between the third radius and the radius of the outlet cross section.
- the radial diffuser exit blading of the present invention has a higher inlet radii r / ri than conventional bladed diffusers, therefore the blading is placed in a zone having a comparatively low speed level (the velocity level in the diffuser is approximately proportional to the reciprocal of the radial Extension).
- the incidence of losses at the inlet of the blading on the one hand low, on the other hand there is in the constriction between stages such a low speed ⁇ or Mach number level that even at high volumetric flows the critical mass flux is not achieved.
- the blading In order to does not occur in the blading according to the invention
- the ratio of the third radius to the first radius is at least 1.35.
- the radial diffuser exit blading according to the invention causes the impressed outflow angle to ensure an improved flow to the spiral collecting space and its radial extent to the inside ends at the third radius, wherein the ratio of the third radius to the first radius is at least so large that known from conventional bladed radial diffusers disadvantages be avoided .
- Figure 1 is a schematic sectional view of a
- Figure 2 is a plan view of the radial diffuser outlet ⁇ blading of the radial compressor stage of Figure 1.
- Figure 1 is a schematic sectional view of a
- Radial compressor stage 1 shown according to an embodiment of the invention.
- the radial compressor stage 1 has a radial compressor impeller 3, a radial compressor diffuser 6, and a discharge spiral housing 8.
- the radial compressor impeller 3 mounted on a shaft 2 for driving the radial compressor impeller ⁇ 3.
- the radial compressor stage 1 Gas in the centrifugal compressor impeller 3 enters a impeller inlet radial compressor 4 of the impeller 3, flows through the radial compressor impeller 3 and enters via the impeller ⁇ outlet 5 and a radial compressor diffuser inlet 9 in the radial compressor diffuser 6 a.
- the radial compressor diffuser inlet 9 is in one
- Radial compressor diffuser 6 also has a channel 7 and an outlet 11, which is arranged at the radius 12 and has a certain width 13.
- a Abströmspiralgetude 8 connects with a Abströmgephaseuseeintritt 14.
- the diffuser 6 also has a
- Radial diffuser exit blading 15 is close to
- Radialdiffusoraustritt 11 arranged and extends between a radius 16, i. the radius at the entrance of the radial diffuser exit blading 15, and the area between the third radius 16 and the radius 12 of the
- Embodiment is a radial diffuser ⁇ blading 15 in the outer region of the radial compressor diffuser 6, shortly before the entry zone of Abströmspiral ⁇ housing 8 is provided.
- FIG. 2 schematically shows part of the radial diffuser outlet blading 15 of the radial compressor stage from FIG.
- the blading 15 has a plurality of
- Vanes 17 which extend radially between the radius 22 and the radius 16.
- the trailing edges 20 of the guide vanes 17 at the radius 22 and the leading edges 19 of the vanes 17 are arranged at the radius 16.
- the vanes 17 are inclined with respect to a radial direction, so that the adjusting Flow velocity vector 21 downstream of the
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009043230A DE102009043230A1 (de) | 2009-09-28 | 2009-09-28 | Radialverdichterdiffusor |
PCT/EP2010/064048 WO2011036206A1 (fr) | 2009-09-28 | 2010-09-23 | Diffuseur de compresseur radial |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2483567A1 true EP2483567A1 (fr) | 2012-08-08 |
Family
ID=43568262
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10760303A Withdrawn EP2483567A1 (fr) | 2009-09-28 | 2010-09-23 | Diffuseur de compresseur radial |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120183395A1 (fr) |
EP (1) | EP2483567A1 (fr) |
CN (1) | CN102686889A (fr) |
DE (1) | DE102009043230A1 (fr) |
WO (1) | WO2011036206A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9863439B2 (en) * | 2014-09-11 | 2018-01-09 | Hamilton Sundstrand Corporation | Backing plate |
CN105257574A (zh) * | 2015-11-27 | 2016-01-20 | 中国航空动力机械研究所 | 斜流离心组合压气机 |
EP3421808B1 (fr) * | 2016-03-28 | 2020-01-22 | Mitsubishi Heavy Industries Compressor Corporation | Machine a compresseur rotative |
DE102016125143A1 (de) * | 2016-12-21 | 2018-06-21 | Man Diesel & Turbo Se | Radialverdichter und Turbolader |
DE102017223791A1 (de) | 2017-12-27 | 2019-06-27 | Siemens Aktiengesellschaft | Wellendichtungsanordnung einer Turbomaschine, Turbomaschine |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE709266C (de) * | 1936-09-15 | 1941-08-12 | Gutehoffnungshuette Oberhausen | Fliehkraftverdichter |
US2681760A (en) * | 1949-02-26 | 1954-06-22 | Curtiss Wright Corp | Centrifugal compressor |
GB751907A (en) * | 1953-07-01 | 1956-07-04 | Augsburg Nurnburg A G Maschf | Improvements in or relating to constructions of the flow channel on the input and output sides of the rotor in radial flow compressors |
US4824325A (en) * | 1988-02-08 | 1989-04-25 | Dresser-Rand Company | Diffuser having split tandem low solidity vanes |
DE102004027594B4 (de) * | 2004-06-05 | 2006-06-29 | Man B & W Diesel Ag | Strömungsmaschine mit radial durchströmtem Verdichterrad |
EP1860325A1 (fr) * | 2006-05-26 | 2007-11-28 | ABB Turbo Systems AG | Diffuseur |
-
2009
- 2009-09-28 DE DE102009043230A patent/DE102009043230A1/de not_active Ceased
-
2010
- 2010-09-23 EP EP10760303A patent/EP2483567A1/fr not_active Withdrawn
- 2010-09-23 US US13/498,661 patent/US20120183395A1/en not_active Abandoned
- 2010-09-23 CN CN2010800433296A patent/CN102686889A/zh active Pending
- 2010-09-23 WO PCT/EP2010/064048 patent/WO2011036206A1/fr active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2011036206A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20120183395A1 (en) | 2012-07-19 |
WO2011036206A1 (fr) | 2011-03-31 |
DE102009043230A1 (de) | 2011-05-26 |
CN102686889A (zh) | 2012-09-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20120305 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR |
|
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
17Q | First examination report despatched |
Effective date: 20171220 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20190418 |