EP2337958A1 - Verdichter - Google Patents
VerdichterInfo
- Publication number
- EP2337958A1 EP2337958A1 EP09760465A EP09760465A EP2337958A1 EP 2337958 A1 EP2337958 A1 EP 2337958A1 EP 09760465 A EP09760465 A EP 09760465A EP 09760465 A EP09760465 A EP 09760465A EP 2337958 A1 EP2337958 A1 EP 2337958A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nozzle
- nozzles
- compressor
- compressor according
- liner segment
- 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
- 230000006835 compression Effects 0.000 claims abstract description 6
- 238000007906 compression Methods 0.000 claims abstract description 6
- 238000005266 casting Methods 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 10
- 239000007924 injection Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0207—Surge control by bleeding, bypassing or recycling fluids
- F04D27/0215—Arrangements therefor, e.g. bleed or by-pass valves
-
- 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
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
- F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
- F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/60—Fluid transfer
- F05B2260/601—Fluid transfer using an ejector or a jet pump
-
- 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
- F05D2260/60—Fluid transfer
- F05D2260/601—Fluid transfer using an ejector or a jet pump
-
- 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
- F05D2270/00—Control
- F05D2270/01—Purpose of the control system
- F05D2270/10—Purpose of the control system to cope with, or avoid, compressor flow instabilities
- F05D2270/101—Compressor surge or stall
- F05D2270/102—Compressor surge or stall caused by working fluid flow velocity profile distortion
Definitions
- the present invention relates to a compressor according to the Oberbe-handle of claim 1. Moreover, the present invention relates to an engine with a compressor.
- Fig. 1 shows a schematic diagram of a compressor with insufflation, as e.g. also known in the art.
- Such a compressor compresses a compression medium, whereby the pressure of the medium increases.
- the compressor has several stages consisting of alternately arranged rotors and stators.
- the compressor has an outer housing 18, within which a housing segment 20 is arranged, which in turn - seen in the flow direction - is arranged upstream of a rotor 30 having blades. Between the outer housing 18 and the housing segment 20 is a pressure compensation chamber 12, the so-called. Plenum.
- Such a compressor further rotors and stators, which are not shown in Fig. 1.
- a compressor for the flow in the compressor in such a construction there is a risk of flow separation, since the flow of the compression medium must run against an increasing pressure. If a flow break occurs in one or more stages of the compressor, a massive drop in performance occurs in the compressor. The compressor then tends to pump because the flow on the wall no longer has sufficient kinetic energy to cope with the pressure increase.
- compressor pumping can be counteracted by various measures. It is known that the compressor pumps can be delayed when throttling a compressor by blowing in the housing area.
- One measure here is the design of deflecting nozzles, the so-called injection nozzles, on the housing edge region (in the liner segments), which blow an air flow to the rotor wall whose blowing direction is deflected towards the rotor wall (wall-parallel) with swirl generation.
- This deflection of the air flow in the nozzles takes place in the axial direction and in the circumferential direction of the compressor.
- these injection nozzles consist of simple slots which pass through the liner segment in such a way that the discharge end faces the rotor.
- round and flattened injection nozzles are also used.
- this object is achieved by a compressor with the features of claim 1.
- the object is achieved by an engine having the features of claim 10.
- the installation space of the nozzles can be reduced and / or a stronger deflection than in the conventional slot solution can be realized.
- the compressor according to the invention according to claim 2 allows for a small installation space in the liner segment to form a suitable deflection. Since small individual nozzles (individual channels) are formed, even an even stronger deflection can be selected in comparison to the conventional slot solution, without having to worry about crossflows.
- the compressor according to the invention according to claim 3 allows for a small installation space an advantageous inflow from the pressure chamber into the individual nozzles, and supports a strong deflection in the nozzle.
- the compressor according to the invention according to claim 5 leads to a slit-like outflow taking advantage of the individual nozzles. As a result, a flat flow can be effected.
- the compressor according to the invention according to claim 6 allows a high volume flow by taking advantage of the individual nozzles.
- the compressor according to the invention according to claim 7 enables an improvement of the flow behavior of the main flow at the rotor on the rotor wall.
- the compressor according to the invention according to claim 8 allows a flexible desired air discharge in the compressor.
- the compressor according to the invention according to claim 9 allows better protection against stall along the circumference of the compressor.
- the compressor according to the invention according to claim 10 allows a cost-effective production of the compressor.
- Fig. 1 shows a schematic diagram of a compressor with insufflation, as e.g. also known in the art.
- Fig. 2 shows a longitudinal section through a compressor according to the invention.
- Fig. 3 is an illustration of a circumferential development of a liner segment according to an embodiment of the present invention as compared with a conventional structure.
- Fig. 4 shows velocity profiles.
- Fig. 5 shows a perspective view in partial section of an end portion of a liner segment according to the embodiment of the present invention, wherein the nozzle inlet is shown.
- Fig. 6 shows a perspective view in partial section of an end portion of a liner segment according to the embodiment of the present invention, wherein the nozzle exit is shown.
- Fig. 7 shows a perspective sectional view of an end portion of a liner segment according to the embodiment of the present invention, wherein the nozzles are shown cut away.
- FIG. 8 is a perspective sectional view of an end portion of a liner segment according to the embodiment of the present invention, wherein the nozzles are shown cut away as viewed from a direction other than in FIG. 7.
- FIG. 9 shows a perspective sectional illustration for illustrating the nozzle deflection in the liner segment according to the exemplary embodiment of the present invention, wherein the nozzles are shown cut away.
- Fig. 2 shows a longitudinal section through a compressor according to the invention.
- the compressor has an outer casing 111 within which is disposed a segment 120 (a so-called liner segment) disposed upstream of a rotor (not shown) having blades.
- the so-called plenum 112 is located between the outer housing 111 and the liner segment 120.
- the liner segment 120 engages on the outer housing 111 via a so-called housing hook 116.
- the housing hook 116 the end portion of the liner segment 120 is defined.
- a pocket 115 is formed on the outer housing 111 facing the plenum 112 in the region of the end portion of the liner segment 120.
- blow-in channels 122 are formed with nozzles 123 (see FIG. 8), the inlet region of which faces the pocket 115 of the outer housing 111 and its exit region faces the rotor (in FIG. 2, the blade of the rotor below the liner segment 120 indicated).
- the nozzles 123 are provided as a nozzle group in the end portion of the liner segment 120, in the present embodiment, a respective group of nozzles 123 is formed in the end portion of the liner segment 120 by five nozzles 123 which are aligned adjacent to each other in the circumferential direction of the liner segment 120.
- Several nozzle groups according to the invention may be provided on the liner segment.
- FIG. 3 is an illustration of a circumferential development of a liner segment 120 as viewed from the annulus on the liner segment according to an embodiment of the present invention as compared with a conventional structure.
- the nozzle group of five nozzles 123 of the present embodiment is designed as a so-called fan nozzle. As clearly seen in Fig. 3, the nozzle group of five nozzles 123 of the present embodiment corresponds to a conventional slot nozzle. The operation of the compressor according to the invention is described below.
- an air flow is introduced into the pressure chamber 112 (the so-called plenum) via an air supply pipe 110 arranged on the outer housing 111 by means of a flange 113. Air passes through the pocket 115 into the inlet region of the nozzles 123, which is blown in via the nozzle outlet toward the rotor 30.
- Fig. 4 shows velocity profiles.
- the speed profile previously is shown in dashed lines, wherein the speed decrease of the compressor flow is recognizable on the housing wall.
- the speed profile afterwards is shown solid.
- the increased speed on the housing wall caused by the fan nozzle according to the invention can be seen.
- Fig. 5 shows a perspective view in partial section of an end portion of a liner segment according to the embodiment of the present invention, wherein the nozzle inlet is shown.
- the inlet region of the group formed as a fan nozzle nozzles 123 is formed so that it faces the pocket 115 in the housing 111.
- the five nozzles per nozzle group used in this embodiment have a quadrangular cross section in the inlet area.
- Fig. 6 shows a perspective view in partial section of an end portion of a liner segment according to the exemplary embodiment of the present invention, wherein the nozzle outlet is shown.
- Figs. 7 and 8 respectively show perspective sectional views of the end portion of a liner segment according to the embodiment of the present invention. The nozzles are each shown cut.
- FIG. 8 shows an illustration viewed from a different direction than in FIG. 7.
- the many individual nozzles are arranged close to each other. According to the embodiment, the wall web between two adjacent individual nozzles is even smaller than the width of a single nozzle. The many individual nozzles thus form a compact configuration.
- FIGS. 7 and 8 not only the group formed as a fan nozzle is shown cut open at nozzles (individual nozzles) 123, but also the core of the fan nozzle is shown perspectivically by reference numeral 123A. The deflection in the respective nozzle is clearly visible. The nozzle inlet is at an angle to the nozzle exit. In Fig. 8, the nozzle deflection is designed in the axial direction.
- FIG. 9 shows a perspective sectional illustration for illustrating the nozzle deflection in the liner segment according to the exemplary embodiment of the present invention, wherein the nozzles are shown cut away.
- the entrance area of the respective nozzle 122 has an entrance twist, which results from the angle of the entry area to the vertical of the tangent at the nozzle entrance.
- the exit area of the respective nozzle 122 has an exit spin resulting from the angle of the exit area to the perpendicular of the tangent to the nozzle exit. As shown in Fig. 9, in this embodiment, the entrance spin is smaller than the exit spin.
- the inlet region and the outlet region meet in the deflection region, in which the injection direction is deflected.
- the fan nozzle according to the invention makes it possible to produce the liner segment, e.g. as a casting or by so-called rapid prototyping.
- a group of several small individual nozzles is used, which realize the same or a stronger deflection. Due to the compact configuration of the many individual nozzles, the overall effect is comparable to the effect of a large single nozzle (eg the conventional slot nozzle) near the nozzle.
- the entrance swirl reduces the required deflection and the installation space of the nozzle.
- the design with individual channels allows almost any spatial guidance of the individual nozzles, so that there is a high degree of design diversity according to the different technical requirements.
- a larger deflection angle i. a greater difference between entry angle and exit angle can be realized without fear of flow separation or compressor pumps.
- the fan nozzle according to the invention thus enables a strong radial deflection and / or circumferential deflection in the smallest space. This makes it ideal for use in liner segments.
- Düsenauseriesöfmungen 125 radial offset, axial offset and / or circumferential offset
- a desired speed or swirl profile of the air flow can be adjusted in the vicinity of the nozzle on the housing wall (eg a free jet with a twist).
- a special desired wall-normal velocity profile can be set for flush-mounted injection.
- the fan nozzle according to the invention even allows deflections, which lead to an outlet blowing flow, which is directed approximately flush to the outlet nozzle wall.
- the flow cross section of the fan nozzles is formed in the above-described exemplary embodiment in a quadrangular shape. He can take a square or a rectangular shape. The rectangular shape facilitates slit-like bubbles. In another exemplary embodiment, the flow cross section of the fan nozzles may be formed in an oval or circular shape.
- five individual nozzles 123 form a group of nozzles.
- a nozzle group may also be defined by e.g. three, four or six nozzles 123 are formed. The number is not limited as long as several individual nozzles are used.
- the nozzle deflection is designed in the axial direction.
- the nozzle deflection can also be designed in the circumferential direction and / or in the axial direction.
- the fan nozzle according to the invention is provided with an entrance swirl.
- the invention is not limited thereto.
- the fan nozzle according to the invention can also be provided without an inlet twist.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008052372A DE102008052372A1 (de) | 2008-10-20 | 2008-10-20 | Verdichter |
| PCT/DE2009/001437 WO2010045923A1 (de) | 2008-10-20 | 2009-10-16 | Verdichter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2337958A1 true EP2337958A1 (de) | 2011-06-29 |
| EP2337958B1 EP2337958B1 (de) | 2016-04-20 |
Family
ID=41647194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09760465.6A Not-in-force EP2337958B1 (de) | 2008-10-20 | 2009-10-16 | Verdichter |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9175690B2 (de) |
| EP (1) | EP2337958B1 (de) |
| CA (1) | CA2740992A1 (de) |
| DE (1) | DE102008052372A1 (de) |
| WO (1) | WO2010045923A1 (de) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9567942B1 (en) * | 2010-12-02 | 2017-02-14 | Concepts Nrec, Llc | Centrifugal turbomachines having extended performance ranges |
| DE102011107523B4 (de) | 2011-07-15 | 2016-08-11 | MTU Aero Engines AG | System zum Einblasen eines Fluids, Verdichter sowie Turbomaschine |
| WO2013102098A1 (en) * | 2011-12-29 | 2013-07-04 | Rolls-Royce North American Technologies, Inc. | Vavle for gas turbine engine |
| DE102012100339A1 (de) * | 2012-01-16 | 2013-07-18 | Universität der Bundeswehr München | Verfahren und Vorrichtung zur Stabilisierung eines Verdichterstroms |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2702157A (en) * | 1949-09-28 | 1955-02-15 | Edward A Stalker | Compressor employing radial diffusion |
| US2685429A (en) * | 1950-01-31 | 1954-08-03 | Gen Electric | Dynamic sealing arrangement for turbomachines |
| US2958456A (en) * | 1954-10-06 | 1960-11-01 | Power Jets Res & Dev Ltd | Multi-stage aerofoil-bladed compressors |
| DE1503581B1 (de) * | 1965-05-04 | 1970-12-17 | Maschf Augsburg Nuernberg Ag | Mit Abgasturbo-Aufladung betriebene Zweitakt-Brennkraftmaschine |
| US4303371A (en) * | 1978-06-05 | 1981-12-01 | General Electric Company | Shroud support with impingement baffle |
| JPS6345402A (ja) * | 1986-08-11 | 1988-02-26 | Nagasu Hideo | 流体機械 |
| US5059093A (en) * | 1990-06-07 | 1991-10-22 | United Technologies Corporation | Compressor bleed port |
| US5340271A (en) * | 1990-08-18 | 1994-08-23 | Rolls-Royce Plc | Flow control method and means |
| DE59205948D1 (de) * | 1991-10-17 | 1996-05-15 | Asea Brown Boveri | Vorrichtung und Verfahren zum Reduzieren einer oder mehrerer resonanter Schwingungen von Laufschaufeln in Turbomaschinen |
| US5607284A (en) * | 1994-12-29 | 1997-03-04 | United Technologies Corporation | Baffled passage casing treatment for compressor blades |
| US5586859A (en) * | 1995-05-31 | 1996-12-24 | United Technologies Corporation | Flow aligned plenum endwall treatment for compressor blades |
| JP3816150B2 (ja) * | 1995-07-18 | 2006-08-30 | 株式会社荏原製作所 | 遠心流体機械 |
| US6585479B2 (en) * | 2001-08-14 | 2003-07-01 | United Technologies Corporation | Casing treatment for compressors |
| DE10158874A1 (de) * | 2001-11-30 | 2003-06-12 | Daimler Chrysler Ag | Abgasturbolader für eine Brennkraftmaschine und Verfahren zum Betrieb einer aufgeladenen Brennkraftmaschine |
| DE102004030597A1 (de) * | 2004-06-24 | 2006-01-26 | Rolls-Royce Deutschland Ltd & Co Kg | Strömungsarbeitsmaschine mit Aussenradstrahlerzeugung am Stator |
| EP1862641A1 (de) * | 2006-06-02 | 2007-12-05 | Siemens Aktiengesellschaft | Ringförmiger Strömungskanal für eine in Axialrichtung von einem Hauptstrom durchströmbare Strömungsmaschine |
| US7704039B1 (en) * | 2007-03-21 | 2010-04-27 | Florida Turbine Technologies, Inc. | BOAS with multiple trenched film cooling slots |
-
2008
- 2008-10-20 DE DE102008052372A patent/DE102008052372A1/de not_active Withdrawn
-
2009
- 2009-10-16 EP EP09760465.6A patent/EP2337958B1/de not_active Not-in-force
- 2009-10-16 WO PCT/DE2009/001437 patent/WO2010045923A1/de not_active Ceased
- 2009-10-16 US US13/123,951 patent/US9175690B2/en not_active Expired - Fee Related
- 2009-10-16 CA CA2740992A patent/CA2740992A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010045923A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008052372A1 (de) | 2010-04-22 |
| US9175690B2 (en) | 2015-11-03 |
| US20110200470A1 (en) | 2011-08-18 |
| CA2740992A1 (en) | 2010-04-29 |
| WO2010045923A1 (de) | 2010-04-29 |
| EP2337958B1 (de) | 2016-04-20 |
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