US20070110601A1 - Compressor Unit Comprising a Centrifugal Compressor and an Electric Motor - Google Patents
Compressor Unit Comprising a Centrifugal Compressor and an Electric Motor Download PDFInfo
- Publication number
- US20070110601A1 US20070110601A1 US11/615,344 US61534406A US2007110601A1 US 20070110601 A1 US20070110601 A1 US 20070110601A1 US 61534406 A US61534406 A US 61534406A US 2007110601 A1 US2007110601 A1 US 2007110601A1
- Authority
- US
- United States
- Prior art keywords
- compressor
- electric motor
- stator
- rotor
- compressor unit
- 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.)
- Abandoned
Links
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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/058—Bearings magnetic; electromagnetic
-
- 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
-
- 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
- F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C37/00—Cooling of bearings
- F16C37/005—Cooling of bearings of magnetic bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/44—Centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C32/00—Bearings not otherwise provided for
- F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
- F16C32/0406—Magnetic bearings
- F16C32/044—Active magnetic bearings
- F16C32/0474—Active magnetic bearings for rotary movement
- F16C32/0489—Active magnetic bearings for rotary movement with active support of five degrees of freedom, e.g. two radial magnetic bearings combined with an axial bearing
Definitions
- the invention relates to a compressor unit, comprising a centrifugal compressor for compressing a gas, having a rotor with one or more compressor impellers, and an electric motor having a stator and a rotor for driving the rotor of the compressor, the compressor and the electric motor being accommodated in a common gas-tight housing which is provided with a gas inlet and a gas outlet, and the rotor of the compressor and the rotor of the electric motor being arranged on a common rotor shaft which is mounted in magnetic bearings.
- a compressor unit of this type is known, for example, from WO-A-94/29597 and EP-A 1 074 746.
- a compressor impeller is arranged on both sides of the electric motor.
- the rotor shaft is mounted in two radial magnetic bearings, which are each arranged between the electric motor and a compressor impeller, and an axial magnetic bearing, which is likewise arranged between the electric motor and one of the compressor impellers.
- the compressor impellers are arranged on one side of the electric motor.
- the rotor shaft comprises two parts which are connected to one another by means of a coupling.
- the rotor shaft is mounted in three radial magnetic bearings which are arranged at both ends of the rotor shaft and between the electric motor and the centrifugal compressor, and one axial magnetic bearing, which is arranged between the electric motor and the centrifugal compressor.
- the rotor shaft comprises a single unit and is mounted in two magnetic radial bearings, each in the vicinity of one end of the common rotor shaft, and one axial magnetic bearing which is arranged in the vicinity of the one of the radial bearings.
- FIG. 1 diagrammatically depicts a first embodiment of the compressor unit according to the invention
- FIG. 2 diagrammatically depicts a second embodiment of the compressor unit according to the invention.
- the compressor unit shown in FIG. 1 comprises a centrifugal compressor 1 for compressing a gas, for example process gas, having a rotor 2 with one or more, in this case three, compressor impellers 3 , and an electric motor 4 with a stator 5 and a rotor 6 for driving the rotor 2 of the compressor.
- the compressor 1 and the electric motor 4 are accommodated in a common gas-tight housing 7 which is provided with a gas inlet 8 and a gas outlet 9 .
- the housing 7 is divided in the customary way and comprises a plurality of parts which are fixedly connected to one another.
- the rotor 2 of the compressor 1 and the rotor 6 of the electric motor 4 are arranged on a common rotor shaft 10 which comprises a single unit.
- the rotor shaft 10 is mounted in two radial magnetic bearings 11 and 12 which are each arranged in the vicinity of one end 13 and 14 , respectively, of the rotor shaft 10 , and one axial magnetic bearing 15 , which is arranged in the vicinity of the radial bearing 11 .
- the rotor shaft 10 is not supported between the electric motor 4 and the centrifugal compressor 1 .
- the magnetic bearings 11 , 12 and 15 will generally be electromagnetic bearings.
- the design of the compressor unit with the rotor shaft which comprises a single unit and the bearings arranged only in the vicinity of the ends of the rotor shaft means that the compressor unit can be of compact structure and that the bearings are readily accessible for maintenance without the housing of the compressor unit having to be removed.
- the compressor unit is preferably arranged vertically. This has the advantage that in particular the radial bearings 11 and 12 can be of relatively lightweight design, since these bearings merely have to centre the rotor shaft.
- the axial bearing can also be of relatively lightweight design if it is ensured that the axial force on the rotor shaft which is produced by the compressor impellers acts counter to the force of gravity.
- the vertical arrangement of the rotor shaft has the further advantage that the compressor unit takes up relatively little space in the horizontal direction.
- the rotor shaft it is also possible for the rotor shaft to be arranged horizontally.
- the design of the compressor unit, and in particular the design of the bearings, has to be adapted to this arrangement.
- the compressor impellers 3 are advantageously an integral part of the rotor shaft 10 . This contrasts with traditional designs, in which separate compressor impellers are mounted on the shaft, for example by thermal shrinking. If the compressor impellers and the rotor shaft are produced from a single unit, separate pieces of impeller material, in which a rotor-shaft part has already been integrated (impeller-shaft segments), are welded to one another. The impeller-shaft segments which have been welded to one another together form the basic compressor rotor, which has to be processed further in order to form the final compressor rotor.
- the rotor 6 of the electric motor 4 is likewise an integral part of the rotor shaft.
- the compressor unit is provided with a cooling system for cooling the magnetic bearings 11 , 12 , 15 and the electric motor 4 .
- This cooling system comprises a line 16 which runs from the compressor and branches into a line 17 which runs to the electric motor 4 and lines 18 and 19 which run to the magnetic bearings 11 , 12 , 15 .
- a filter 20 is incorporated in the line 16 which runs from the compressor.
- compressed gas is tapped off at an intermediate stage of the compressor 1 , is passed through the line 16 and the filter 20 and is fed in metered fashion, via the lines 17 , 18 and 19 , to the stator 5 of the electric motor 4 and, via the lines 18 and 19 , to the magnetic bearings 11 and 15 and 12 .
- the cooling gas is collected again inside the compressor unit and is guided to the inlet section of the compressor.
- FIG. 2 shows a slightly altered embodiment of the compressor unit according to the invention. This embodiment differs from the embodiment illustrated in FIG. 1 in that the stator 5 of the electric motor 4 has a dedicated cooling system. This is to prevent the stator 5 of the electric motor being affected by any aggressive constituents which may be present in the gas which is to be compressed.
- the cooling system for the magnetic bearings 11 , 12 , 15 is otherwise identical to the cooling system for the magnetic bearings 11 , 12 , 15 of the embodiment shown in FIG. 1 .
- the stator 5 of the electric motor 4 is incorporated in a stator chamber 21 , which is separate from the remainder of the interior of the compressor unit and is delimited by that section of the wall of the housing 7 of the compressor unit which surrounds the stator 5 and a partition 22 , which adjoins this wall section and extends in the radial direction on both sides of the stator 5 and also between the stator 5 and the rotor 6 of the electric motor 4 .
- This partition 22 is also known as a can.
- the stator chamber 21 is provided with a feed 23 and a discharge 24 for a separate cooling medium which is circulated in a cooling circuit 26 by a pump 25 .
- a heat exchanger 27 is incorporated in the cooling circuit 26 .
- the partition (can) 22 may be designed in two ways.
- the partition 22 may be designed in such a manner that the wall of the stator chamber 21 is able to withstand the design pressure of the compressor.
- the partition 22 In another embodiment of the partition 22 , at least that section of the partition 22 which extends between the stator 5 and the rotor 6 of the electric motor 4 is of thin-walled design.
- the stator chamber is incorporated in the closed cooling circuit, which is completely filled with a cooling liquid, in such a manner that the cooling system of the stator 5 of the electric motor 4 as a whole is able to withstand the design pressure of the compressor unit.
- This design principle is based on a combination of a form fit of the thin-walled partition 22 and the poor compressibility of the cooling medium.
Abstract
A compressor unit comprises a centrifugal compressor (1) for compressing a gas, having a rotor (2) with one or more compressor impellers (3), and an electric motor (4) having a stator (5) and a rotor (6), for driving the rotor (2) of the compressor. The compressor and the electric motor are accommodated in a common gas-tight housing (7) which is provided with a gas inlet (8) and a gas outlet (9). The rotor of the compressor and the rotor of the electric motor are arranged on a common rotor shaft (10) which is mounted in magnetic bearings (11, 12, 15). The rotor shaft (10) comprises a single unit and is mounted in two radial magnetic bearings (11, 12), each in the vicinity of one end of the common rotor shaft, and one axial magnetic bearing (15), which is arranged in the vicinity of one (11) of the radial bearings.
Description
- This application is a continuation of copending U.S. application, Ser. No. 10/480,011, filed Apr. 16, 2004, which is a national phase application based on PCT/NL2002/00336 filed on May 24, 2002, which claims priority to and the benefit of Application NL 1018212, filed on Jun. 5, 2001, which applications are entirely incorporated herein by reference.
- The invention relates to a compressor unit, comprising a centrifugal compressor for compressing a gas, having a rotor with one or more compressor impellers, and an electric motor having a stator and a rotor for driving the rotor of the compressor, the compressor and the electric motor being accommodated in a common gas-tight housing which is provided with a gas inlet and a gas outlet, and the rotor of the compressor and the rotor of the electric motor being arranged on a common rotor shaft which is mounted in magnetic bearings.
- A compressor unit of this type is known, for example, from WO-A-94/29597 and EP-
A 1 074 746. - In the compressor unit which is known from WO-A 94/29597, a compressor impeller is arranged on both sides of the electric motor. The rotor shaft is mounted in two radial magnetic bearings, which are each arranged between the electric motor and a compressor impeller, and an axial magnetic bearing, which is likewise arranged between the electric motor and one of the compressor impellers.
- In the compressor unit which is known from EP-
A 1 074 746, in particularFIG. 2 , the compressor impellers are arranged on one side of the electric motor. The rotor shaft comprises two parts which are connected to one another by means of a coupling. The rotor shaft is mounted in three radial magnetic bearings which are arranged at both ends of the rotor shaft and between the electric motor and the centrifugal compressor, and one axial magnetic bearing, which is arranged between the electric motor and the centrifugal compressor. - It is an object of the invention to provide an improved compressor unit of the type described in the preamble which can be of compact design and in which the bearings are readily accessible without it being necessary to remove the housing of the compressor unit.
- This object is achieved by the fact that the rotor shaft comprises a single unit and is mounted in two magnetic radial bearings, each in the vicinity of one end of the common rotor shaft, and one axial magnetic bearing which is arranged in the vicinity of the one of the radial bearings.
- Preferred embodiments of the compressor unit according to the invention are defined in the dependent claims.
- The invention will be explained in more detail in the following description of a number of embodiments of the compressor unit according to the invention with reference to the drawing, in which:
-
FIG. 1 diagrammatically depicts a first embodiment of the compressor unit according to the invention, and -
FIG. 2 diagrammatically depicts a second embodiment of the compressor unit according to the invention. - The compressor unit shown in
FIG. 1 comprises acentrifugal compressor 1 for compressing a gas, for example process gas, having arotor 2 with one or more, in this case three,compressor impellers 3, and anelectric motor 4 with astator 5 and arotor 6 for driving therotor 2 of the compressor. Thecompressor 1 and theelectric motor 4 are accommodated in a common gas-tight housing 7 which is provided with a gas inlet 8 and agas outlet 9. Thehousing 7 is divided in the customary way and comprises a plurality of parts which are fixedly connected to one another. - The
rotor 2 of thecompressor 1 and therotor 6 of theelectric motor 4 are arranged on acommon rotor shaft 10 which comprises a single unit. Therotor shaft 10 is mounted in two radialmagnetic bearings end rotor shaft 10, and one axial magnetic bearing 15, which is arranged in the vicinity of theradial bearing 11. Therotor shaft 10 is not supported between theelectric motor 4 and thecentrifugal compressor 1. Themagnetic bearings - The design of the compressor unit with the rotor shaft which comprises a single unit and the bearings arranged only in the vicinity of the ends of the rotor shaft means that the compressor unit can be of compact structure and that the bearings are readily accessible for maintenance without the housing of the compressor unit having to be removed.
- The compressor unit is preferably arranged vertically. This has the advantage that in particular the
radial bearings - The axial bearing can also be of relatively lightweight design if it is ensured that the axial force on the rotor shaft which is produced by the compressor impellers acts counter to the force of gravity.
- The vertical arrangement of the rotor shaft has the further advantage that the compressor unit takes up relatively little space in the horizontal direction.
- Obviously, it is also possible for the rotor shaft to be arranged horizontally. However, the design of the compressor unit, and in particular the design of the bearings, has to be adapted to this arrangement.
- The
compressor impellers 3 are advantageously an integral part of therotor shaft 10. This contrasts with traditional designs, in which separate compressor impellers are mounted on the shaft, for example by thermal shrinking. If the compressor impellers and the rotor shaft are produced from a single unit, separate pieces of impeller material, in which a rotor-shaft part has already been integrated (impeller-shaft segments), are welded to one another. The impeller-shaft segments which have been welded to one another together form the basic compressor rotor, which has to be processed further in order to form the final compressor rotor. - Preferably, the
rotor 6 of theelectric motor 4 is likewise an integral part of the rotor shaft. - The compressor unit is provided with a cooling system for cooling the
magnetic bearings electric motor 4. This cooling system comprises aline 16 which runs from the compressor and branches into aline 17 which runs to theelectric motor 4 andlines magnetic bearings filter 20 is incorporated in theline 16 which runs from the compressor. To cool theelectric motor 4 and themagnetic bearings compressor 1, is passed through theline 16 and thefilter 20 and is fed in metered fashion, via thelines stator 5 of theelectric motor 4 and, via thelines magnetic bearings -
FIG. 2 shows a slightly altered embodiment of the compressor unit according to the invention. This embodiment differs from the embodiment illustrated inFIG. 1 in that thestator 5 of theelectric motor 4 has a dedicated cooling system. This is to prevent thestator 5 of the electric motor being affected by any aggressive constituents which may be present in the gas which is to be compressed. - The cooling system for the
magnetic bearings magnetic bearings FIG. 1 . - The
stator 5 of theelectric motor 4 is incorporated in astator chamber 21, which is separate from the remainder of the interior of the compressor unit and is delimited by that section of the wall of thehousing 7 of the compressor unit which surrounds thestator 5 and apartition 22, which adjoins this wall section and extends in the radial direction on both sides of thestator 5 and also between thestator 5 and therotor 6 of theelectric motor 4. Thispartition 22 is also known as a can. Thestator chamber 21 is provided with afeed 23 and adischarge 24 for a separate cooling medium which is circulated in acooling circuit 26 by apump 25. Aheat exchanger 27 is incorporated in thecooling circuit 26. - The partition (can) 22 may be designed in two ways.
- The
partition 22 may be designed in such a manner that the wall of thestator chamber 21 is able to withstand the design pressure of the compressor. - In another embodiment of the
partition 22, at least that section of thepartition 22 which extends between thestator 5 and therotor 6 of theelectric motor 4 is of thin-walled design. The stator chamber is incorporated in the closed cooling circuit, which is completely filled with a cooling liquid, in such a manner that the cooling system of thestator 5 of theelectric motor 4 as a whole is able to withstand the design pressure of the compressor unit. This design principle is based on a combination of a form fit of the thin-walled partition 22 and the poor compressibility of the cooling medium. - The advantage of the latter embodiment, in which the
partition 22 is of thin-walled design in the area between thestator 5 and therotor 6, is that a greater output per unit area of the motor can be achieved, with reduced eddy current losses.
Claims (13)
1. A compressor unit, comprising a centrifugal compressor for compressing a gas, having a rotor with one or more compressor impellers, and an electric motor having a stator and a rotor for driving the rotor of the compressor, the compressor and the electric motor being accommodated in a common gas-tight housing which is provided with a gas inlet and a gas outlet, and the rotor of the compressor and the rotor of the electric motor being arranged on a common rotor shaft which is mounted in magnetic bearings, the rotor shaft comprising a single unit and the rotor shaft being mounted in two magnetic radial bearings, each in the vicinity of one end of the common rotor shaft, and one axial magnetic bearing which is arranged in the vicinity of the one of the radial bearings.
2. The compressor unit of claim 1 , in which the rotor shaft is arranged vertically.
3. The compressor unit of claim 1 , in which the compressor impeller or impellers are an integral part of the rotor shaft.
4. The compressor unit of claim 1 , provided with a cooling system for cooling the magnetic bearings and the electric motor.
5. The compressor unit of claim 4 , provided with lines which run from the compressor to the magnetic bearings for the purpose of conveying gas from the compressor to the magnetic bearings for the purpose of cooling these bearings.
6. The compressor unit of claim 4 , provided with a line which runs from the compressor to the electric motor for the purpose of conveying gas from the compressor to the electric motor for the purpose of cooling the electric motor.
7. The compressor unit of claim 5 , in which a filter is incorporated in the lines running from the compressor to the magnetic bearings.
8. The compressor unit of claim 5 , in which a filter is incorporated in the line running from the compressor to the electric motor.
9. The compressor unit of claim 4 , in which the stator of the electric motor is provided with a dedicated cooling system for cooling the stator by means of a separate cooling medium.
10. The compressor unit of claim 9 , in which the stator of the electric motor is accommodated in a stator chamber which is separate from the remainder of the interior of the compressor unit and is delimited by that section of the wall of the housing of the compressor unit which surrounds the stator and a partition which adjoins this wall section and extends in the radial direction on both sides of the stator and also between the stator and the rotor of the electric motor.
11. The compressor unit of claim 10 , in which the stator chamber is provided with connections for supplying and discharging the separate cooling medium.
12. The compressor unit of claim 10 , in which the wall of the stator chamber is designed in such a manner that it is able to withstand the design pressure of the compressor unit.
13. The compressor unit of claim 10 , in which at least that section of the partition of the stator chamber which extends between the stator and the rotor of the electric motor is of thin-walled design, the stator chamber is incorporated in a closed cooling circuit which is completely filled with a cooling liquid, and the cooling system of the stator of the electric motor as a whole is able to withstand the design pressure of the compressor unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/615,344 US20070110601A1 (en) | 2001-06-05 | 2006-12-22 | Compressor Unit Comprising a Centrifugal Compressor and an Electric Motor |
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1018212A NL1018212C2 (en) | 2001-06-05 | 2001-06-05 | Compressor unit comprising a centrifugal compressor and an electric motor. |
NL1018212 | 2001-06-05 | ||
PCT/NL2002/000336 WO2002099286A1 (en) | 2001-06-05 | 2002-05-24 | Compressor unit comprising a centrifugal compressor and an electric motor |
US10/480,011 US7156627B2 (en) | 2001-06-05 | 2002-05-24 | Compressor unit comprising a centrifugal compressor and an electric motor |
US11/615,344 US20070110601A1 (en) | 2001-06-05 | 2006-12-22 | Compressor Unit Comprising a Centrifugal Compressor and an Electric Motor |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/480,011 Continuation US7156627B2 (en) | 2001-06-05 | 2002-05-24 | Compressor unit comprising a centrifugal compressor and an electric motor |
PCT/NL2002/000336 Continuation WO2002099286A1 (en) | 2001-06-05 | 2002-05-24 | Compressor unit comprising a centrifugal compressor and an electric motor |
Publications (1)
Publication Number | Publication Date |
---|---|
US20070110601A1 true US20070110601A1 (en) | 2007-05-17 |
Family
ID=19773490
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/480,011 Expired - Lifetime US7156627B2 (en) | 2001-06-05 | 2002-05-24 | Compressor unit comprising a centrifugal compressor and an electric motor |
US11/615,344 Abandoned US20070110601A1 (en) | 2001-06-05 | 2006-12-22 | Compressor Unit Comprising a Centrifugal Compressor and an Electric Motor |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/480,011 Expired - Lifetime US7156627B2 (en) | 2001-06-05 | 2002-05-24 | Compressor unit comprising a centrifugal compressor and an electric motor |
Country Status (10)
Country | Link |
---|---|
US (2) | US7156627B2 (en) |
EP (2) | EP1392981B2 (en) |
JP (1) | JP2004527693A (en) |
AT (1) | ATE400742T1 (en) |
BR (1) | BR0210169B1 (en) |
DE (1) | DE60227509D1 (en) |
ES (1) | ES2309173T5 (en) |
NL (1) | NL1018212C2 (en) |
NO (1) | NO337720B1 (en) |
WO (1) | WO2002099286A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090322095A1 (en) * | 2008-06-26 | 2009-12-31 | Ed Mazur | Wind turbine |
US20110044832A1 (en) * | 2008-04-29 | 2011-02-24 | Theo Nijhuis | Fluid Energy Machine |
US20110280710A1 (en) * | 2009-01-23 | 2011-11-17 | Gabriele Mariotti | Reversible system for injecting and extracting gas for fluid rotary machines |
US20120100017A1 (en) * | 2010-10-25 | 2012-04-26 | Thermodyn | Centrifugal compressor unit |
US20210254635A1 (en) * | 2018-11-13 | 2021-08-19 | Thermodyn Sas | System for hydrocarbon recovery |
Families Citing this family (82)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1021656C2 (en) * | 2002-10-15 | 2004-04-16 | Siemens Demag Delaval Turbomac | Compressor unit with common housing for electric motor and compressor, method for manufacturing a partition for a compressor unit and use of a compressor unit. |
RU2304233C2 (en) * | 2003-04-11 | 2007-08-10 | Термодин | Centrifugal compressing device |
FR2853700B1 (en) * | 2003-04-11 | 2006-06-16 | Thermodyn | CENTRIFUGAL MOTORCYCLE COMPRESSOR GROUP WITH ASSISTED REFRIGERATION. |
NO323324B1 (en) * | 2003-07-02 | 2007-03-19 | Kvaerner Oilfield Prod As | Procedure for regulating that pressure in an underwater compressor module |
DE502004002264D1 (en) | 2003-07-05 | 2007-01-25 | Man Turbo Ag Schweiz | Compressor device and method of operating the same |
EP1482179B1 (en) * | 2003-07-05 | 2006-12-13 | MAN TURBO AG Schweiz | Compressor apparatus and method of its operation |
US8021127B2 (en) * | 2004-06-29 | 2011-09-20 | Johnson Controls Technology Company | System and method for cooling a compressor motor |
US8075668B2 (en) | 2005-03-29 | 2011-12-13 | Dresser-Rand Company | Drainage system for compressor separators |
WO2007090775A1 (en) | 2006-02-03 | 2007-08-16 | Siemens Aktiengesellschaft | Compressor unit |
ITMI20060294A1 (en) * | 2006-02-17 | 2007-08-18 | Nuovo Pignone Spa | MOTOCOMPRESSORE |
EP1999375B1 (en) * | 2006-03-24 | 2011-04-20 | Siemens Aktiengesellschaft | Compressor unit |
WO2007110272A1 (en) * | 2006-03-24 | 2007-10-04 | Siemens Aktiengesellschaft | Compressor unit |
DE502007007058D1 (en) * | 2006-03-24 | 2011-06-09 | Siemens Ag | COMPRESSOR UNIT AND ASSEMBLY PROCEDURE |
CN101410626A (en) * | 2006-03-24 | 2009-04-15 | 西门子公司 | Compressor unit and use of a cooling medium |
US8434998B2 (en) | 2006-09-19 | 2013-05-07 | Dresser-Rand Company | Rotary separator drum seal |
MX2009003119A (en) | 2006-09-21 | 2009-04-06 | Dresser Rand Co | Separator drum and compressor impeller assembly. |
WO2008039446A2 (en) | 2006-09-25 | 2008-04-03 | Dresser-Rand Company | Fluid deflector for fluid separator devices |
MX2009003175A (en) | 2006-09-25 | 2009-04-03 | Dresser Rand Co | Access cover for pressurized connector spool. |
CA2663883C (en) | 2006-09-25 | 2015-02-03 | Kevin M. Majot | Coupling guard system |
MX2009003177A (en) | 2006-09-25 | 2009-04-03 | Dresser Rand Co | Axially moveable spool connector. |
WO2008039733A2 (en) | 2006-09-25 | 2008-04-03 | Dresser-Rand Company | Compressor mounting system |
BRPI0717253B1 (en) | 2006-09-26 | 2018-05-08 | Dresser Rand Co | fluid separator |
US8156757B2 (en) * | 2006-10-06 | 2012-04-17 | Aff-Mcquay Inc. | High capacity chiller compressor |
DE102006049516B3 (en) * | 2006-10-20 | 2008-01-03 | Atlas Copco Energas Gmbh | Turbo-engine, e.g. for operating as turbo-compressor, has a rotor with radial and axial bearings in a casing with a shaft and a rotor disk fastened on the shaft |
US7710081B2 (en) | 2006-10-27 | 2010-05-04 | Direct Drive Systems, Inc. | Electromechanical energy conversion systems |
NO330192B1 (en) * | 2007-04-12 | 2011-03-07 | Framo Eng As | Fluid Pump System. |
DE102007032933B4 (en) * | 2007-07-14 | 2015-02-19 | Atlas Copco Energas Gmbh | turbomachinery |
EP2093866A1 (en) * | 2008-02-25 | 2009-08-26 | Siemens Aktiengesellschaft | Dynamoelectric machine |
US8408879B2 (en) | 2008-03-05 | 2013-04-02 | Dresser-Rand Company | Compressor assembly including separator and ejector pump |
CA2717871C (en) * | 2008-03-13 | 2013-08-13 | Aaf-Mcquay Inc. | High capacity chiller compressor |
EP2103810A1 (en) | 2008-03-19 | 2009-09-23 | Siemens Aktiengesellschaft | Compressor unit |
RU2010142965A (en) * | 2008-04-17 | 2012-05-27 | Синкрони, Инк. (US) | HIGH SPEED MOTOR WITH PERMANENT MAGNET AND GENERATOR WITH METAL ROTOR WITH LOW LEVEL |
MX2010011348A (en) | 2008-04-18 | 2011-05-23 | Synchrony Inc | Magnetic thrust bearing with integrated electronics. |
NO328277B1 (en) | 2008-04-21 | 2010-01-18 | Statoil Asa | Gas Compression System |
EP2113671A1 (en) | 2008-04-28 | 2009-11-04 | Siemens Aktiengesellschaft | Arrangement with an electric motor and a pump |
US8079805B2 (en) | 2008-06-25 | 2011-12-20 | Dresser-Rand Company | Rotary separator and shaft coupler for compressors |
US8062400B2 (en) | 2008-06-25 | 2011-11-22 | Dresser-Rand Company | Dual body drum for rotary separators |
US7922218B2 (en) | 2008-06-25 | 2011-04-12 | Dresser-Rand Company | Shear ring casing coupler device |
US20100019598A1 (en) * | 2008-07-28 | 2010-01-28 | Direct Drive Systems, Inc. | Rotor for an electric machine |
DE102008038787A1 (en) | 2008-08-13 | 2010-02-18 | Siemens Aktiengesellschaft | Fluid energy machine |
EP2206927A1 (en) * | 2009-01-13 | 2010-07-14 | Siemens Aktiengesellschaft | Machine for fluid transportation |
US8087901B2 (en) | 2009-03-20 | 2012-01-03 | Dresser-Rand Company | Fluid channeling device for back-to-back compressors |
US8210804B2 (en) | 2009-03-20 | 2012-07-03 | Dresser-Rand Company | Slidable cover for casing access port |
US8061972B2 (en) | 2009-03-24 | 2011-11-22 | Dresser-Rand Company | High pressure casing access cover |
EP2253852A1 (en) | 2009-05-19 | 2010-11-24 | Siemens Aktiengesellschaft | Compressor assembly with an active magnetic bearing |
CN101581307B (en) * | 2009-05-20 | 2011-04-27 | 清华大学 | Hydrodynamic float vane type microminiature pump |
US9583991B2 (en) * | 2009-06-24 | 2017-02-28 | Synchrony, Inc. | Systems, devices, and/or methods for managing magnetic bearings |
IT1399171B1 (en) | 2009-07-10 | 2013-04-11 | Nuovo Pignone Spa | HIGH PRESSURE COMPRESSION UNIT FOR INDUSTRIAL PLANT PROCESS FLUIDS AND RELATED OPERATING METHOD |
EP2290241A1 (en) | 2009-07-13 | 2011-03-02 | Siemens Aktiengesellschaft | Turbocompressor assembly with a cooling system |
BE1019030A5 (en) | 2009-08-03 | 2012-01-10 | Atlas Copco Airpower Nv | TURBO COMPRESSOR SYSTEM. |
WO2011034764A2 (en) | 2009-09-15 | 2011-03-24 | Dresser-Rand Company | Improved density-based compact separator |
EP2322805A1 (en) | 2009-11-11 | 2011-05-18 | Siemens Aktiengesellschaft | Gas compressor assembly |
DE102010064061A1 (en) | 2009-12-28 | 2011-08-11 | Volkswagen AG, 38440 | Turbo compressor for fuel cell drive of internal combustion engine of hybrid drive for motor vehicle, has drive unit and two compressor wheels driven by drive unit |
EP2533905B1 (en) | 2010-02-10 | 2018-07-04 | Dresser-Rand Company | Separator fluid collector and method |
US8987959B2 (en) | 2010-06-23 | 2015-03-24 | Dresser-Rand Company | Split magnetic thrust bearing |
US8663483B2 (en) | 2010-07-15 | 2014-03-04 | Dresser-Rand Company | Radial vane pack for rotary separators |
US8673159B2 (en) | 2010-07-15 | 2014-03-18 | Dresser-Rand Company | Enhanced in-line rotary separator |
WO2012012018A2 (en) | 2010-07-20 | 2012-01-26 | Dresser-Rand Company | Combination of expansion and cooling to enhance separation |
WO2012012143A2 (en) | 2010-07-21 | 2012-01-26 | Dresser-Rand Company | Multiple modular in-line rotary separator bundle |
US8596292B2 (en) | 2010-09-09 | 2013-12-03 | Dresser-Rand Company | Flush-enabled controlled flow drain |
US20130294939A1 (en) * | 2010-10-27 | 2013-11-07 | Dresser-Rand Company | Multiple motor drivers for a hermetically-sealed motor-compressor system |
FR2969722B1 (en) | 2010-12-22 | 2013-01-04 | Thermodyn | TORSIBLE COUPLING MOTORCOMPRESSOR UNIT LOCATED IN A HOLLOW COMPRESSOR SHAFT |
US8994237B2 (en) | 2010-12-30 | 2015-03-31 | Dresser-Rand Company | Method for on-line detection of liquid and potential for the occurrence of resistance to ground faults in active magnetic bearing systems |
WO2013109235A2 (en) | 2010-12-30 | 2013-07-25 | Dresser-Rand Company | Method for on-line detection of resistance-to-ground faults in active magnetic bearing systems |
US9551349B2 (en) | 2011-04-08 | 2017-01-24 | Dresser-Rand Company | Circulating dielectric oil cooling system for canned bearings and canned electronics |
EP2715167B1 (en) | 2011-05-27 | 2017-08-30 | Dresser-Rand Company | Segmented coast-down bearing for magnetic bearing systems |
US9206819B2 (en) * | 2011-06-01 | 2015-12-08 | Dresser-Rand Company | Subsea motor-compressor cooling system |
US8851756B2 (en) | 2011-06-29 | 2014-10-07 | Dresser-Rand Company | Whirl inhibiting coast-down bearing for magnetic bearing systems |
FR2980538B1 (en) | 2011-09-27 | 2013-10-25 | Thermodyn | COMPRESSOR MOTOR WITH REMOVABLE CARTRIDGE |
CN103206399B (en) * | 2012-01-17 | 2015-09-16 | 珠海格力电器股份有限公司 | Centrifugal compressor and comprise the chiller plant of this centrifugal compressor |
DE102012012540A1 (en) * | 2012-06-26 | 2014-01-02 | Robert Bosch Gmbh | Turbo compressor |
NO337176B1 (en) * | 2013-01-10 | 2016-02-01 | Aker Subsea As | Sealed pump |
WO2014182305A1 (en) * | 2013-05-09 | 2014-11-13 | Danfoss A/S | Compressor including impeller with radial flow inlet |
US11274705B2 (en) * | 2016-02-19 | 2022-03-15 | Johnson Controls Technology Company | Vapor compression system and method of extending service life of same |
US10570924B2 (en) | 2016-06-02 | 2020-02-25 | The University Of Akron | Integrated motor compressor for vapor compression refrigeration system |
EP3299629A1 (en) | 2016-09-26 | 2018-03-28 | Siemens Aktiengesellschaft | Turbo compressor housing, method for producing same |
EP3569869B1 (en) | 2017-02-23 | 2021-03-17 | Mitsubishi Heavy Industries Compressor Corporation | Gas compressor |
US10145224B1 (en) | 2017-09-20 | 2018-12-04 | Upwing Energy, LLC | High speed motor drive |
WO2019079473A1 (en) * | 2017-10-19 | 2019-04-25 | Shell Oil Company | Mineral insulated power cables for electric motor driven integral compressors |
RU2675296C1 (en) * | 2018-02-13 | 2018-12-18 | Акционерное общество "Научно-исследовательский и конструкторский институт центробежных и роторных компрессоров им. В.Б. Шнеппа" | Modular centrifugal compressor with axial input and integral electric drive |
US20220049709A1 (en) * | 2018-11-19 | 2022-02-17 | Smart E, Llc | Lubrication-free centrifugal compressor |
EP3726081B1 (en) | 2019-04-16 | 2023-10-25 | GE Energy Power Conversion Technology Ltd | Mechanical system and associated motorcompressor |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4196946A (en) * | 1978-05-25 | 1980-04-08 | Westinghouse Electric Corp. | Temperature compensated magnetic bearing system for a watthour meter |
US4523896A (en) * | 1982-06-04 | 1985-06-18 | Creusot-Loire | Centrifugal compressor |
US5127792A (en) * | 1988-08-22 | 1992-07-07 | Ebara Corporation | Centrifugal pump having magnet bearing |
US5501583A (en) * | 1992-08-19 | 1996-03-26 | Hitachi, Ltd. | Turbo vacuum pump |
US6060805A (en) * | 1996-08-12 | 2000-05-09 | Ebara Corporation | Canned motor |
US6350109B1 (en) * | 1997-09-12 | 2002-02-26 | Societe De Mecanique Magnetique | Rotary pump with immersed rotor |
US6376958B1 (en) * | 1999-08-12 | 2002-04-23 | Hitachi, Ltd. | Permanent magnet type synchronous motor and air compressor |
US6390789B1 (en) * | 1999-07-16 | 2002-05-21 | Sulzer Turbo Ag | Cooling means for the motor of a turbocompressor |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734459A (en) * | 1956-02-14 | zimsky | ||
GB743779A (en) * | 1952-03-22 | 1956-01-25 | Mcgraw Electric Co | Improvements in electric motor pump unit |
DE2052120A1 (en) † | 1970-10-23 | 1972-04-27 | Pfeiffer Vakuumtechnik | Bearing arrangement for molecular pumps and turbo molecular pumps |
DE2337226A1 (en) † | 1973-07-21 | 1975-02-06 | Maschf Augsburg Nuernberg Ag | VACUUM PUMP WITH A RUNNER MOUNTED INSIDE THEIR HOUSING |
FR2592688B1 (en) † | 1986-01-08 | 1988-03-18 | Alsthom | TURBOMACHINE. |
IL109967A (en) | 1993-06-15 | 1997-07-13 | Multistack Int Ltd | Compressor |
RU2082023C1 (en) † | 1996-05-22 | 1997-06-20 | Закрытое акционерное общество "Сейболт-Евразия" | Microcompressor |
EP1074746B1 (en) | 1999-07-16 | 2005-05-18 | Man Turbo Ag | Turbo compressor |
EP0990798A1 (en) * | 1999-07-16 | 2000-04-05 | Sulzer Turbo AG | Turbo compressor |
-
2001
- 2001-06-05 NL NL1018212A patent/NL1018212C2/en not_active IP Right Cessation
-
2002
- 2002-05-24 BR BRPI0210169-6A patent/BR0210169B1/en not_active IP Right Cessation
- 2002-05-24 WO PCT/NL2002/000336 patent/WO2002099286A1/en active Application Filing
- 2002-05-24 US US10/480,011 patent/US7156627B2/en not_active Expired - Lifetime
- 2002-05-24 ES ES02736278.9T patent/ES2309173T5/en not_active Expired - Lifetime
- 2002-05-24 EP EP02736278.9A patent/EP1392981B2/en not_active Expired - Lifetime
- 2002-05-24 EP EP08075057.3A patent/EP1942280A3/en not_active Withdrawn
- 2002-05-24 AT AT02736278T patent/ATE400742T1/en not_active IP Right Cessation
- 2002-05-24 DE DE60227509T patent/DE60227509D1/en not_active Expired - Lifetime
- 2002-05-24 JP JP2003502376A patent/JP2004527693A/en active Pending
-
2003
- 2003-12-04 NO NO20035398A patent/NO337720B1/en not_active IP Right Cessation
-
2006
- 2006-12-22 US US11/615,344 patent/US20070110601A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4196946A (en) * | 1978-05-25 | 1980-04-08 | Westinghouse Electric Corp. | Temperature compensated magnetic bearing system for a watthour meter |
US4523896A (en) * | 1982-06-04 | 1985-06-18 | Creusot-Loire | Centrifugal compressor |
US5127792A (en) * | 1988-08-22 | 1992-07-07 | Ebara Corporation | Centrifugal pump having magnet bearing |
US5501583A (en) * | 1992-08-19 | 1996-03-26 | Hitachi, Ltd. | Turbo vacuum pump |
US6060805A (en) * | 1996-08-12 | 2000-05-09 | Ebara Corporation | Canned motor |
US6350109B1 (en) * | 1997-09-12 | 2002-02-26 | Societe De Mecanique Magnetique | Rotary pump with immersed rotor |
US6390789B1 (en) * | 1999-07-16 | 2002-05-21 | Sulzer Turbo Ag | Cooling means for the motor of a turbocompressor |
US6376958B1 (en) * | 1999-08-12 | 2002-04-23 | Hitachi, Ltd. | Permanent magnet type synchronous motor and air compressor |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110044832A1 (en) * | 2008-04-29 | 2011-02-24 | Theo Nijhuis | Fluid Energy Machine |
CN102016322A (en) * | 2008-04-29 | 2011-04-13 | 西门子公司 | Fluid energy machine |
US8579608B2 (en) * | 2008-04-29 | 2013-11-12 | Siemens Aktiengesellschaft | Fluid energy machine |
US20090322095A1 (en) * | 2008-06-26 | 2009-12-31 | Ed Mazur | Wind turbine |
US8513826B2 (en) * | 2008-06-26 | 2013-08-20 | Ed Mazur | Wind turbine |
US20110280710A1 (en) * | 2009-01-23 | 2011-11-17 | Gabriele Mariotti | Reversible system for injecting and extracting gas for fluid rotary machines |
US9151293B2 (en) * | 2009-01-23 | 2015-10-06 | Nuovo Pignone S.P.A. | Reversible system for injecting and extracting gas for fluid rotary machines |
US20120100017A1 (en) * | 2010-10-25 | 2012-04-26 | Thermodyn | Centrifugal compressor unit |
US8899945B2 (en) * | 2010-10-25 | 2014-12-02 | Thermodyn | Centrifugal compressor unit |
US20210254635A1 (en) * | 2018-11-13 | 2021-08-19 | Thermodyn Sas | System for hydrocarbon recovery |
Also Published As
Publication number | Publication date |
---|---|
US20040170505A1 (en) | 2004-09-02 |
ES2309173T3 (en) | 2008-12-16 |
DE60227509D1 (en) | 2008-08-21 |
EP1942280A2 (en) | 2008-07-09 |
JP2004527693A (en) | 2004-09-09 |
NO337720B1 (en) | 2016-06-13 |
EP1392981B1 (en) | 2008-07-09 |
WO2002099286A1 (en) | 2002-12-12 |
ES2309173T5 (en) | 2016-01-28 |
EP1392981A1 (en) | 2004-03-03 |
BR0210169A (en) | 2004-04-27 |
BR0210169B1 (en) | 2011-02-08 |
US7156627B2 (en) | 2007-01-02 |
EP1392981B2 (en) | 2015-09-30 |
NL1018212C2 (en) | 2002-12-10 |
EP1942280A3 (en) | 2017-04-19 |
NO20035398L (en) | 2003-12-04 |
ATE400742T1 (en) | 2008-07-15 |
NO20035398D0 (en) | 2003-12-04 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7156627B2 (en) | Compressor unit comprising a centrifugal compressor and an electric motor | |
CN109072928B (en) | Turbo compressor comprising an intercooler | |
US10030672B2 (en) | Method and system for cooling a motor-compressor with a closed-loop cooling circuit | |
US4969803A (en) | Compressor unit | |
US7573165B2 (en) | Compressor and driving motor assembly | |
US6364645B1 (en) | Screw compressor having a compressor screw housing and a spaced outer housing | |
CN105041685A (en) | Electric motor-driven compressor having bi-directional liquid coolant passage | |
US3891355A (en) | Cooling arrangement for a motor driven compressor | |
KR20180054027A (en) | turbo compressor with separated paths for cooling air | |
US6392320B1 (en) | Gas-cooled electrical machine having an axial fan | |
US4743176A (en) | Gas flow system for a compressor | |
KR102508011B1 (en) | Turbo compressor with bearing cooling channel | |
US6461123B1 (en) | Turbomolecular pump | |
US20090324433A1 (en) | Rotating-slide vacuum pump or compressor of block design having a disc-rotor synchronous motor which is mounted on flying bearings | |
JP3425351B2 (en) | Two-stage centrifugal compressor | |
US7828530B2 (en) | Electric motor pump for swimming pool maintenance | |
EP0883749B1 (en) | Compressor | |
US20230387751A1 (en) | Centrifugal Pump With a Drive | |
US6595761B2 (en) | Screw compressor | |
US2915656A (en) | Heat exchanger for dynamoelectric machine | |
KR100273370B1 (en) | Turbo compressor | |
CN115419570A (en) | Variable-frequency speed regulation all-in-one machine and system for oil-cooled compressor | |
CN114502844A (en) | Air compressor for vehicle | |
KR20010011628A (en) | Structure for cooling motor in turbo compressor | |
TH45823A (en) | Two-stage centrifugal compressor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LENDERINK, GERRIT;NIJHUIS, THEO;REEL/FRAME:020276/0253 Effective date: 20071203 Owner name: SIEMENS AKTIENGESELLSCHAFT,GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LENDERINK, GERRIT;NIJHUIS, THEO;REEL/FRAME:020276/0253 Effective date: 20071203 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |