EP0042044A1 - Compresseur axial dont la limite de pompage est déplacée - Google Patents
Compresseur axial dont la limite de pompage est déplacée Download PDFInfo
- Publication number
- EP0042044A1 EP0042044A1 EP81102534A EP81102534A EP0042044A1 EP 0042044 A1 EP0042044 A1 EP 0042044A1 EP 81102534 A EP81102534 A EP 81102534A EP 81102534 A EP81102534 A EP 81102534A EP 0042044 A1 EP0042044 A1 EP 0042044A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axial compressor
- compressor according
- flow
- housing
- sleepers
- 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.)
- Granted
Links
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 238000005086 pumping Methods 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Images
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
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/028—Layout of fluid flow through the stages
-
- 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
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
- F04D29/547—Ducts having a special shape in order to influence fluid flow
Definitions
- the invention relates to a single-stage or multi-stage axial compressor with axially one behind the other, combined into stages guide vane and rotor blade rings, and with one or more protruding from the inner surface of the housing surrounding the vane rings, circumferential around the axis, the type of a threshold Stairs are graduated.
- Such a device is described in DE-PS 809 842.
- the changes in the inside diameter required in the direction of flow are carried out in this device by gradual narrowing.
- the thresholds mentioned are present both on the inside of the housing and on the outside of the rotor.
- the threshold surfaces are preferably each cylindrical or conical.
- the flow guidance is to be improved by the thresholds in such a way that the risk of the flow separating at the impeller outside and at the stator inside is reduced when the axial speed is shifted.
- Such a shift in the axial speed is then - according to the cited patent - under certain circumstances forced to avoid difficulties with regard to the Mach number at high peripheral speeds. This indicates that the known device should make it possible to improve the flow, particularly when shifting to high speeds.
- the primary aim is not to improve the design of the compressor, but to enlarge the working area. As experience shows, it is necessary to increase the flow in the axial direction at the blade tip if, for. B. the peripheral speed is reduced.
- DE-AS 2 351 308 To avoid the stall, it is also known (DE-AS 2 351 308) to arrange a profiled ring which is arranged in front of a rotor blade ring and is concentric with the machine axis, the outer ring surface of which forms an annular channel converging in the flow direction with the housing wall.
- the proposed solution according to DE-AS 2 351 308 is indeed feasible, but in practice means relatively high additional construction costs, since the ring can be difficult to install in the housing if the other structural requirements are taken into account. The efficiency losses due to the additional, friction-generating surface and the so-called flow wake are also not to be underestimated.
- the construction according to the invention therefore has the advantages that it can be installed economically and at a reasonable cost, and that, in theory, it causes only a slight loss in efficiency which could not be measured in practice.
- the device according to DE-OS 2 446 512 is unsuitable in the case of the axially compressed type mentioned at the beginning of the invention, in order to stabilize the surge limit in the lower delivery range, in particular because the detachment that first occurs on the rotor blade grille cannot be corrected, but also on the other hand Because of the completely different blade configuration of a compressor with axial blading, the principle is not transferable.
- An essential criterion for the design of the object according to the invention is that, under normal load, the sleepers to be installed do not narrow the cross section so much that normal operation is significantly impeded.
- the sleepers should preferably constrict the free overall cross-section of the housing only to an amount between 80-99%, preferably between 95-99%, of the cross-sectional area existing before the threshold.
- the inner contour of the compressor housing can be assigned a certain average taper, which is related to the compression to be achieved. It is proposed, when using the sleepers according to the invention, to approximate the base points of the sleepers to a conical jacket describing the mean taper of the inner wall of the housing It is also possible to deviate from this position, whereby wind tunnel and standing tests can provide the expert with hints for improvement.
- the threshold height can then preferably also be varied in the further course of the flow, in particular increasing successively.
- the exemplary embodiments of multi-stage axial compressors shown in FIGS. 1 and 2 have guide vane and rotor blade rings arranged one after the other and combined to form stages 1, 2, 3.
- the guide blades 4, 6 are connected downstream of the moving blades 5, 7.
- a guide ring 8 with pivotable blades for regulating the throughput quantity is arranged in front of the first rotor blade ring.
- the blades 4 to 7 are also partially pivotable and connected to corresponding adjustment devices.
- sleepers 12, 13, 14 are provided on the opposite inner wall 11 of the housing, which protrude inward and circumferentially around the axis from the inner surface of the housing surrounding the blade rings.
- the sleepers are stepped in the direction of flow in the manner of a staircase, constricting the free overall cross-section of the housing from step to step by 1-5% of the cross-sectional area in front of the threshold.
- Each threshold 12 - 14 is arranged directly in front of a moving blade, in the present case designated with the numbers 15, 16, 17, the streamlines being compressed in operation in the area of the moving blade tips.
- the outer contour of the sleepers i. H. the rising surface 18 rounded convex curved.
- the curve of curvature is composed of circular and / or parabolic arcs. The curvature is intended to prevent flow breaks, turbulence and similar disturbances in the flow from occurring.
- the narrowing of the overall cross section through the thresholds 12, 13, 14 is not so great that an excessive flow constriction occurs in normal operation, which is also undesirable.
- FIG. 4 shows various characteristic curves which were measured on an axial compressor with an output of approximately 400,000 m 3 / h.
- the flow channel with a tapered but smooth inner surface was used once; on the other hand, a flow channel was used which had the thresholds according to the invention.
- the design point for both compressors was a pressure ratio of approximately 4.4 and a nominal delivery rate of approximately 375,000 m 3 / h.
- the surge limit in the original form, designated G1 was significantly less favorable than when using sleepers according to the invention. This resulted in a curve G2.
- the characteristic curves a ... f were measured at different guide vane positions, the percentages relating to the adjustment range of the guide vanes, ie defined by the path of the vane adjustment mechanism.
- the nominal speed was around 3,000 rpm.
- the base points of the thresholds 12-14 each lie on one medium conicity of the conical casing describing the inner wall of the housing. This shape is relatively easy to manufacture and brings a defined compression performance.
- the blades In order to allow the blades to be precisely fitted within the housing, the blades are turned over at their tips in a cylindrical or conical manner. This gives them exactly the same distance from the inner wall of the housing, the gradation through the threshold allowing a defined flow gain that is the same for all individual blades.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3022206A DE3022206C2 (de) | 1980-06-13 | 1980-06-13 | Axialverdichter mit verschobener Pumpgrenze |
DE3022206 | 1980-06-13 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0042044A1 true EP0042044A1 (fr) | 1981-12-23 |
EP0042044B1 EP0042044B1 (fr) | 1984-07-11 |
Family
ID=6104545
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81102534A Expired EP0042044B1 (fr) | 1980-06-13 | 1981-04-03 | Compresseur axial dont la limite de pompage est déplacée |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0042044B1 (fr) |
JP (2) | JPS5728900A (fr) |
DE (2) | DE3022206C2 (fr) |
SU (1) | SU1109065A3 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8591179B2 (en) | 2009-07-17 | 2013-11-26 | Rolls-Royce Deutschland Ltd & Co Kg | Axial-flow compressor with a flow pulse generator |
US8677757B2 (en) | 2009-07-08 | 2014-03-25 | Rolls-Royce Deutschland Ltd & Co Kg | Combustion chamber head of a gas turbine |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2908152B1 (fr) * | 2006-11-08 | 2009-02-06 | Snecma Sa | Aube en fleche de turbomachine |
JP6423084B2 (ja) | 2014-08-29 | 2018-11-14 | シーメンス アクチエンゲゼルシヤフトSiemens Aktiengesellschaft | ガスタービンエンジン用の制御された収束圧縮機流路 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH216489A (de) * | 1940-04-04 | 1941-08-31 | Sulzer Ag | Mehrstufiger Axialverdichter. |
DE809842C (de) * | 1948-10-19 | 1951-08-02 | Hermann Oestrich Dr Ing | Axialverdichter |
US2846137A (en) * | 1955-06-03 | 1958-08-05 | Gen Electric | Construction for axial-flow turbomachinery |
GB866793A (en) * | 1956-09-01 | 1961-05-03 | Gio Batta Sommariva | Improvements in or relating to axial flow compressors |
DE1428077A1 (de) * | 1963-03-20 | 1969-03-20 | Donezkij G Pk I Exi Komplexnoi | Axialluefter |
US3775023A (en) * | 1971-02-17 | 1973-11-27 | Teledyne Ind | Multistage axial flow compressor |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2990106A (en) * | 1956-10-12 | 1961-06-27 | English Electric Co Ltd | Axial flow multi-stage compressors |
DE2351308C3 (de) * | 1973-10-12 | 1981-10-08 | M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen | Einrichtung zur Erweiterung des Arbeitsbereichs von Axialströmungsmaschinen |
JPS5314205A (en) * | 1976-07-23 | 1978-02-08 | Hitachi Ltd | Step structure for axial-flow fluid machine |
-
1980
- 1980-06-13 DE DE3022206A patent/DE3022206C2/de not_active Expired
-
1981
- 1981-04-03 EP EP81102534A patent/EP0042044B1/fr not_active Expired
- 1981-04-03 DE DE8181102534T patent/DE3164670D1/de not_active Expired
- 1981-05-26 SU SU813285553A patent/SU1109065A3/ru active
- 1981-06-12 JP JP8972981A patent/JPS5728900A/ja active Pending
-
1986
- 1986-09-19 JP JP1986142771U patent/JPS6259800U/ja active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH216489A (de) * | 1940-04-04 | 1941-08-31 | Sulzer Ag | Mehrstufiger Axialverdichter. |
DE809842C (de) * | 1948-10-19 | 1951-08-02 | Hermann Oestrich Dr Ing | Axialverdichter |
US2846137A (en) * | 1955-06-03 | 1958-08-05 | Gen Electric | Construction for axial-flow turbomachinery |
GB866793A (en) * | 1956-09-01 | 1961-05-03 | Gio Batta Sommariva | Improvements in or relating to axial flow compressors |
DE1428077A1 (de) * | 1963-03-20 | 1969-03-20 | Donezkij G Pk I Exi Komplexnoi | Axialluefter |
US3775023A (en) * | 1971-02-17 | 1973-11-27 | Teledyne Ind | Multistage axial flow compressor |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8677757B2 (en) | 2009-07-08 | 2014-03-25 | Rolls-Royce Deutschland Ltd & Co Kg | Combustion chamber head of a gas turbine |
US8591179B2 (en) | 2009-07-17 | 2013-11-26 | Rolls-Royce Deutschland Ltd & Co Kg | Axial-flow compressor with a flow pulse generator |
Also Published As
Publication number | Publication date |
---|---|
EP0042044B1 (fr) | 1984-07-11 |
DE3022206A1 (de) | 1982-01-07 |
JPS5728900A (en) | 1982-02-16 |
JPS6259800U (fr) | 1987-04-14 |
DE3022206C2 (de) | 1983-08-11 |
DE3164670D1 (en) | 1984-08-16 |
SU1109065A3 (ru) | 1984-08-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE69211441T2 (de) | Kreiselverdichter | |
DE2953333C1 (de) | Turbinenabdampfstutzen | |
EP0614014B1 (fr) | Compresseur radial avec un carter stabilisant l'écoulement de fluides | |
DE69402843T2 (de) | Schaufelspitzeneinrichtung zum schutz gegen strömungsablösung | |
DE2551614A1 (de) | Axial kurzer axialventilator | |
DE1935534U (de) | Axialturbine oder -verdichter mit einstellbaren endleitschaufeln. | |
WO2019063384A1 (fr) | Diffuseur pour compresseur | |
DE3103595A1 (de) | Diffusor einer fliehkraft-fluidmaschine | |
EP1651869B1 (fr) | Roue a aubes destinee a des pompes | |
DE102009054771A1 (de) | Turboverdichter | |
DE2558840C2 (de) | Einrichtung zur Verminderung des Kavitationsverschleisses | |
DE3706772C2 (fr) | ||
DE4220153B4 (de) | Wirbelstromgebläse | |
DE3521798C2 (de) | Axialverdichter mit Pumpverhütungsmaßnahmen | |
DE1728005A1 (de) | Rotationspumpe | |
EP3376041A1 (fr) | Étage de recirculation et turbomachine à énergie fluidique radiale | |
EP0752066A1 (fr) | Dispositif pour reduire le bruit de pompes centrifuges | |
DE3022206C2 (de) | Axialverdichter mit verschobener Pumpgrenze | |
EP0567874B1 (fr) | Machine à courant pour la compression d'un gaz | |
DE3912279C2 (fr) | ||
DE3430769C2 (fr) | ||
DE3148995A1 (de) | Axialturbine | |
DE3926152C2 (fr) | ||
DE3031686C2 (fr) | ||
DE102019108811B4 (de) | Laufschaufel einer Strömungsmaschine |
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 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR GB IT NL |
|
ITCL | It: translation for ep claims filed |
Representative=s name: BARZANO' E ZANARDO MILANO S.P.A. |
|
17P | Request for examination filed |
Effective date: 19811110 |
|
TCNL | Nl: translation of patent claims filed | ||
ITF | It: translation for a ep patent filed | ||
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): CH DE FR GB IT LI NL |
|
REF | Corresponds to: |
Ref document number: 3164670 Country of ref document: DE Date of ref document: 19840816 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
ITTA | It: last paid annual fee | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: 732E |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PUE Owner name: MAN GUTEHOFFNUNGSHUETTE AKTIENGESELLSCHAFT -DANN A Ref country code: CH Ref legal event code: PFA Free format text: M.A.N. MASCHINENFABRIK AUGSBURG- NUERNBERG AKTIENGESELLSCHAFT TRANSFER- MAN GUTEHOFFNUNGSHUETTE GMBH * MAN GUTEHOFFNUNGSHUETTE GMBH TRANSFER- MAN GUTEHOFFNUNGSHUETTE AKTIENGESELLSCHAFT |
|
NLS | Nl: assignments of ep-patents |
Owner name: GHH BORSIG TURBOMASCHINEN GMBH;MAN GUTEHOFFNUNGSHU |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP Ref country code: FR Ref legal event code: CJ |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20000313 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: NL Payment date: 20000320 Year of fee payment: 20 Ref country code: DE Payment date: 20000320 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: CH Payment date: 20000323 Year of fee payment: 20 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20000428 Year of fee payment: 20 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20010402 Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20010402 Ref country code: CH Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20010402 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20010403 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Effective date: 20010402 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
NLV7 | Nl: ceased due to reaching the maximum lifetime of a patent |
Effective date: 20010403 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CJ Ref country code: FR Ref legal event code: CD Ref country code: FR Ref legal event code: CA |