EP1473462A1 - Groupe compresseur à montage en cartouche - Google Patents
Groupe compresseur à montage en cartouche Download PDFInfo
- Publication number
- EP1473462A1 EP1473462A1 EP04290916A EP04290916A EP1473462A1 EP 1473462 A1 EP1473462 A1 EP 1473462A1 EP 04290916 A EP04290916 A EP 04290916A EP 04290916 A EP04290916 A EP 04290916A EP 1473462 A1 EP1473462 A1 EP 1473462A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- compressor
- cell
- outlet
- compressor unit
- envelope
- 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 23
- 238000007906 compression Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 18
- 238000004891 communication Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000012423 maintenance Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000009466 transformation Effects 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
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
-
- 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
- F04D17/125—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 the casing being vertically split
-
- 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
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
-
- 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
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
Definitions
- the invention relates to a centrifugal compressor unit or motor-compressor group. More particularly, the invention relates a centrifugal compressor unit with vertical joint plane, that is to say a compressor group whose compressor is closed by two end covers and composed of one or more sections of compression placed in line.
- a particularly interesting application of such a group compressor concerns the creation of an integrated compressor group, that is to say a compressor unit which includes an electric motor driving a rotor and a compressor comprising a set of at least less a compression impeller arranged on a driven shaft driven by the rotor, the assembly being mounted in a common housing gas tight handled by the compressor unit.
- the invention applies generally to any compressor which can consist of a cartridge comprising a rotor supported by bearings and an aerodynamic stator provided with shaft end sealing means mounted in an envelope, these different components which may or may not be immersed in the gas handled by the compressor.
- Such compressors can be driven by all types of motor means, for example electric speed motor means fixed or variable, at high speed or not, or by a steam turbine, a gas turbine, ... a speed multiplier or a variator mechanical speed can be placed if necessary between the coach and the compressor.
- motor means for example electric speed motor means fixed or variable, at high speed or not, or by a steam turbine, a gas turbine, ... a speed multiplier or a variator mechanical speed can be placed if necessary between the coach and the compressor.
- a compressor of a motor-compressor unit conventional vertical joint plane conventionally a generally cylindrical envelope 10, provided a bottom 12 inside which are mounted the different parts of the compressor, namely the rotor 14, the stator 16 of the part aerodynamics of the compressor, the end sealing means shaft 18 and 20, radial bearings, such as 21, and a pivot 22 ensuring the axial guidance of the rotor 14 and constituting a stop limiting the axial movement of the rotor during operation of the compressor.
- the whole is closed by a cover 24 fixed on the envelope 10 for example by screwing or by means of a shear ring 26.
- stator elements 16 these have an inlet cell 28 delimiting an intake duct 30 intended for supplying the compressor with gas, and one or more diaphragms 29 intended to collect the gas at the outlet of each wheel at vanes, such as 30, to slow it down in a radial diffuser 31 and then to guide to the next wheel through a return channel 32.
- a outlet cell 34 which includes a discharge volute, ensures the gas collection at the outlet of the last compressor impeller and guide it to a discharge line.
- devices shaft end seal 18 and 20 are mounted respectively in the bottom 12 of the envelope 10 and in the cover 24.
- the object of the invention is to overcome this drawback and to supply a compressor unit, in particular of the joint plane type to avoid the appearance of forces on the mounting elements of the various constituent parts of the compressor and facilitating in in addition to the assembly and maintenance of such a compressor.
- a compressor unit comprising an electric motor driving a rotor, at least one compressor comprising a stator comprising, mounted in cartridge in an envelope, at least one input cell delimiting a gas compressor group supply inlet duct, one outlet cell delimiting a discharge volute and at least one compression cell arranged between the intake duct and the output volute and each equipped with a compression paddle wheel mounted on a driven shaft driven by the rotor, a pivoting radial centering forming stop for the rotor and sealing means end of tree.
- This compressor unit also includes means shaft end seal interposed between the rotor and the exit.
- the positioning of the end sealing means shaft between the output cell and the rotor establishes a fluid communication between the end face of the outlet and the discharge pipe, thus generating forces on this face opposing the forces generated under the effect of pressure gas in each compression cell.
- the output cell and a corresponding end of the envelope have two surfaces radial facing by which the cartridge bears against the envelope with play, said bores being formed so as to be in fluid communication with the output of the output cell.
- said radial surfaces facing the cell outlet and enclosure are each delimited by two bores on the one hand, and in the other said corresponding end of the envelope, on the other hand.
- the compressor group comprises sealing elements suitable for seal between the cartridge and the envelope in an area including the outlet of the outlet cell and said radial surfaces.
- the sealing elements can be arranged so as to establish a seal between the intake duct and the outlet of the compressor and to establish a fluid communication between a cavity delimited by the facing surfaces and the compressor outlet.
- the shaft end sealing means are fixed to the cartridge.
- the assembly consisting of the motor and the or each compressor is mounted in a common envelope to constitute an integrated motor-compressor.
- the envelope includes a first section in which the motor is arranged and a second section in which the compressor is mounted, the first and second sections being separated by a section bore narrowed delimiting said radial surface of the envelope.
- the exit cell has, for example, an extension cylindrical axial which is inserted into said bore, with interposition a sealing element.
- FIG 2 there is shown a sectional view of a compressor of a compressor unit according to the invention, designated by the general reference numeral 36.
- this compressor 36 is constituted by centrifugal compressor multi-stage with vertical joint plane, i.e. closed by a cover end, and is composed of several compression sections arranged in line between an inlet E for supplying the compressor with gas to be compressed and an outlet S of compressed gas. It is intended to be associated with an electric motor (not shown) driving in rotation a driving shaft itself driving a rotor 38.
- This electric motor can be a fixed or variable speed motor, high speed or not.
- the rotor 38 can also be rotated by a turbine steam or gas turbine.
- a multiplier or a mechanical speed variator can be interposed, if necessary if necessary between the compressor 36 and the motor means.
- the compressor 36 essentially comprises an envelope 40 of generally shaped cylindrical inside which are placed a set of compression cells 42, 44, 46 and 48 which each constitute a compression stage. These compression cells 42, 44, 46 and 48 are arranged in line between an input cell 50 in which is formed an intake duct 52 for supplying the floors of compression and an output cell 54 defining a volute of refoulement 56.
- the intake duct 52 is arranged coaxially to a orifice 58 formed in the envelope 40 to constitute the inlet E of gas.
- the outlet volute 56 opens, in turn, into an orifice 60 formed in the envelope 40 to constitute the gas outlet S compressed.
- Each compression cell 42, 44, 46, and 48 has a paddle wheel, such as 62, rotated by the rotor 38 and ensuring, as is conventional, on the one hand, an increase in the static pressure of the gas handled by the compressor and, on the other hand, an increase in kinetic energy.
- a radial diffuser 64 equipping each compression cell, performs a transformation into pressure of the kinetic energy increase downstream of the wheels at vane 62.
- a fuel return channel 66 ensures the guiding of the gas to a next floor or to the outlet volute 56.
- the envelope 40 is provided with a first open end 68 closed by a cover end 70 fixed by means of shear rings 72 or bolted and an opposite end 74 which has a bore of section shrunk with respect to the rest of the envelope, into which fits an axial cylindrical extension 76 of the outlet cell 54.
- a pivoting 80 comprising an axial stop 82 and radial bearings 84, maintains the radial and axial positioning of the rotor 38.
- shaft end sealing devices 86 and 88 are arranged, one between the rotor 38 and the input cell 50 and the other between the rotor 38 and the outlet cell 54, in particular between the rotor 38 and the axial cylindrical extension 76.
- the various elements entering into the constitution of the stator namely the different compression stages as well as the input cells 50 and outlet 54, are arranged in the envelope with insertion clearance, so as to allow axial sliding of these elements relative to to envelope 40.
- the peripheral surface external of the output cell 54 delimits with the peripheral surface external of the axial cylindrical extension 76, an annular surface S1, which comes to bear, during assembly, against a surface corresponding annular S2, delimited by a first bore 90 or main bore of the casing 40 and a second bore 92 delimiting the passage in which the extension is inserted cylindrical axial 76 of the outlet cell 54.
- the space delimited by the two facing surfaces S1 and S2 is in fluid communication with the output volute 56 and is therefore at the pressure of the gas leaving the turbocharger.
- first and second annular seals sealing 92 and 94 are arranged on either side of the duct 52.
- a third annular seal 96 is interposed between the axial cylindrical extension 76 and the casing 40. Consequently, the gas leaving the turbocharger is confined between the second and third joint.
- the axial forces passing through the cartridge at level of the stop 82 are much greater than the axial thrust of the rotor under the effect of the compression wheels 62, which contributes to ensuring the axial support of the stator of the stop.
- the output cell 54 is directly supported and held against the last stage of compression by pressure prevailing in the cavity between surfaces S1 and S2. This allows precisely control the cross section of the radial diffuser 66 from the last floor which is located between these two elements. So unlike the state of the art in which the pressure prevailing in this diffuser results in a separation of the last compression stage and of the output cell 54, and therefore the appearance of instability aerodynamics in the gas flow at the outlet of the diffuser generating rotating forces on the rotor and vibrations important in the latter, no variation in section appears at within the top floor diffuser.
- end sealing devices 86 and 88 as well as the radial bearings 78 and 84 are only subject to no axial force and can therefore be attached to the stator coming to be mounted in the envelope 40 to constitute a cartridge formed of a one-piece and rigid assembly, without the need for oversized fasteners.
- a cartridge can thus form a unitary assembly which can be easily inserted into the envelope without requiring separate mounting of each element.
- This embodiment is suitable for the production of a motor-compressor integrated, i.e. a compressor unit in which the motor and compressor are arranged in a single envelope common.
- the envelope 40 in which are arranged the inlet 50 and outlet 54 cells, as well as the cells 42, 44, 46 and 48 between a gas inlet E and an outlet S.
- the envelope 40 has a first section 98 in which is arranged the compressor 36, and a second section 100, in which the electric motor of the compressor unit is arranged (not shown), these two sections 98 and 100 being separated by a part intermediate 102 of narrowed section delimiting a cylindrical passage axial and comprising, on the side facing the first section 98, a annular surface S2 intended to cooperate with the annular surface S1 of the output cell 54.
- this section 98 is also closed by an end cover 70 supporting the pivot 80.
- the radial bearings 78 are supported by the axial cylindrical extension 76 of the cubicle output 54.
- the invention which has just been described keeps all parts of the compressor in contact on each other due to the forces generated by the pressure of the gas filling the cavity between the surfaces S1 and S2 of the cavity of output, on the one hand, and the envelope, on the other hand.
- the mounting of the scroll on the last diffuser allows you to control the section of this diffuser, thus avoiding any risk of aerodynamic instability at small debit.
- the invention greatly facilitates the mounting of the compressor and decrease the intervention time of the personnel of maintenance.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- la figure 1, dont il a déjà été fait mention, illustre la structure générale d'un ensemble turbocompresseur selon l'état de la technique ;
- la figure 2 est une vue en coupe d'un compresseur de groupe compresseur conforme à l'invention ;et
- la figure 3 illustre un autre exemple de réalisation d'un compresseur de groupe compresseur conforme à l'invention.
Claims (9)
- Groupe compresseur, comprenant un moteur électrique entraínant un rotor (38), au moins un compresseur (36) comprenant un stator comportant, montés en cartouche dans une enveloppe, au moins une cellule d'entrée (50) délimitant un conduit d'admission (52) pour l'alimentation du groupe compresseur en gaz, une cellule de sortie (54) délimitant une volute de refoulement et au moins une cellule de compression (42, 44, 46, 48) disposée entre le conduit d'admission et la volute de sortie et équipée chacune d'une roue à aubes (62) de compression montée sur un arbre mené entraíné par le rotor, une pivoterie (80) de centrage radial formant butée pour le rotor et des moyens (86, 88) d'étanchéité de bout d'arbre, caractérisé en ce qu'il comporte des moyens (88) d'étanchéité de bout d'arbre interposés entre le rotor (38) et la cellule de sortie (54).
- Groupe compresseur selon la revendication 1, caractérisé en ce que la cellule de sortie et une extrémité correspondante de l'enveloppe comportent deux surfaces radiales (S1, S2) en regard par lesquelles la cartouche prend appui contre l'enveloppe avec jeu, lesdits alésages étant pratiqués de manière à être en communication fluidique avec la sortie (S) de la cellule de sortie.
- Groupe compresseur selon la revendication 2, caractérisé en ce que lesdites surfaces radiales (S1, S2) en regard de la cellule de sortie et de l'enveloppe sont délimitées chacune par deux alésages d'extrémité pratiqués dans la cellule de sortie, d'une part, et dans ladite extrémité correspondante de l'enveloppe, d'autre part.
- Groupe compresseur selon l'une des revendications 2 et 3, caractérisé en ce qu'il comporte des éléments d'étanchéité (94, 96) adaptés pour réaliser une étanchéité entre la cartouche et l'enveloppe dans une zone englobant la sortie de la cellule de sortie et lesdites surfaces radiales.
- Groupe compresseur selon la revendication 4, caractérisé en ce que les éléments d'étanchéité sont disposés de manière à établir une étanchéité entre le conduit d'admission et la sortie du compresseur et à établir une communication fluidique entre une cavité délimitée par les surfaces en regard (S1, S2) et la sortie du compresseur.
- Groupe compresseur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que les moyens d'étanchéité de bout d'arbre sont fixés sur la cartouche.
- Groupe compresseur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'ensemble constitué par le moteur et le ou chaque compresseur est monté dans une enveloppe (40) commune.
- Groupe compresseur selon la revendication 7, dépendante de la revendication 2, caractérisé en ce que l'enveloppe comprend une première section (98) dans laquelle est disposé le moteur et une deuxième section (100) dans laquelle est monté le compresseur, les première et deuxième sections étant séparées par un alésage (102) de section rétrécie délimitant ladite surface radiale de l'enveloppe.
- Groupe compresseur selon la revendication 8, caractérisé en ce que la cellule de sortie comporte un prolongement cylindrique axial (76) qui s'insère dans ledit alésage avec interposition d'un élément d'étanchéité.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0305186A FR2854207B1 (fr) | 2003-04-28 | 2003-04-28 | Groupe compresseur a montage en cartouche. |
FR0305186 | 2003-04-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1473462A1 true EP1473462A1 (fr) | 2004-11-03 |
EP1473462B1 EP1473462B1 (fr) | 2006-01-25 |
Family
ID=32982319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04290916A Expired - Lifetime EP1473462B1 (fr) | 2003-04-28 | 2004-04-06 | Groupe compresseur à montage en cartouche |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1473462B1 (fr) |
DE (1) | DE602004000354T2 (fr) |
FR (1) | FR2854207B1 (fr) |
NO (1) | NO20041686L (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2980538A1 (fr) * | 2011-09-27 | 2013-03-29 | Thermodyn | Groupe moto-compresseur a cartouche amovible |
JP2022511290A (ja) * | 2018-09-04 | 2022-01-31 | シーメンス エナジー グローバル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | 少なくとも1つのカバーを有するターボ機械ハウジング、ターボ機械、カバーの製造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB282113A (en) * | 1926-12-13 | 1928-03-15 | Rateau Soc | A method of mounting centrifugal compressors or other rotary apparatus |
DE1046248B (de) * | 1952-03-21 | 1958-12-11 | Alfred Buechi Dr Ing | Mehrstufige Zentrifugalfoerdermaschine |
DE19654840A1 (de) * | 1996-12-23 | 1998-06-25 | Mannesmann Ag | Mehrstufiger Turbokompressor |
EP0990798A1 (fr) * | 1999-07-16 | 2000-04-05 | Sulzer Turbo AG | Turbo-compresseur |
-
2003
- 2003-04-28 FR FR0305186A patent/FR2854207B1/fr not_active Expired - Lifetime
-
2004
- 2004-04-06 EP EP04290916A patent/EP1473462B1/fr not_active Expired - Lifetime
- 2004-04-06 DE DE602004000354T patent/DE602004000354T2/de not_active Expired - Lifetime
- 2004-04-26 NO NO20041686A patent/NO20041686L/no not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB282113A (en) * | 1926-12-13 | 1928-03-15 | Rateau Soc | A method of mounting centrifugal compressors or other rotary apparatus |
DE1046248B (de) * | 1952-03-21 | 1958-12-11 | Alfred Buechi Dr Ing | Mehrstufige Zentrifugalfoerdermaschine |
DE19654840A1 (de) * | 1996-12-23 | 1998-06-25 | Mannesmann Ag | Mehrstufiger Turbokompressor |
EP0990798A1 (fr) * | 1999-07-16 | 2000-04-05 | Sulzer Turbo AG | Turbo-compresseur |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2980538A1 (fr) * | 2011-09-27 | 2013-03-29 | Thermodyn | Groupe moto-compresseur a cartouche amovible |
WO2013045459A1 (fr) * | 2011-09-27 | 2013-04-04 | Thermodyn Sas | Unité de motocompresseur comprenant une cartouche amovible |
US10527063B2 (en) | 2011-09-27 | 2020-01-07 | Thermodyne SAS | Motor compressor unit with removable cartridge |
JP2022511290A (ja) * | 2018-09-04 | 2022-01-31 | シーメンス エナジー グローバル ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | 少なくとも1つのカバーを有するターボ機械ハウジング、ターボ機械、カバーの製造方法 |
US11466592B2 (en) | 2018-09-04 | 2022-10-11 | Siemens Energy Global GmbH & Co. KG | Turbomachine housing having at least one cover, turbomachine, method for producing a cover |
Also Published As
Publication number | Publication date |
---|---|
DE602004000354T2 (de) | 2006-11-02 |
FR2854207A1 (fr) | 2004-10-29 |
DE602004000354D1 (de) | 2006-04-13 |
EP1473462B1 (fr) | 2006-01-25 |
NO20041686L (no) | 2004-10-29 |
FR2854207B1 (fr) | 2006-06-23 |
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