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EP1999378A1 - Unite de compression et utilisation d'un fluide de refroidissement - Google Patents

Unite de compression et utilisation d'un fluide de refroidissement

Info

Publication number
EP1999378A1
EP1999378A1 EP07704565A EP07704565A EP1999378A1 EP 1999378 A1 EP1999378 A1 EP 1999378A1 EP 07704565 A EP07704565 A EP 07704565A EP 07704565 A EP07704565 A EP 07704565A EP 1999378 A1 EP1999378 A1 EP 1999378A1
Authority
EP
European Patent Office
Prior art keywords
cooling
compressor unit
stator
medium
compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07704565A
Other languages
German (de)
English (en)
Inventor
Maria Bade
Axel MÖHLE
Günter Zwarg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to EP07704565A priority Critical patent/EP1999378A1/fr
Publication of EP1999378A1 publication Critical patent/EP1999378A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/08—Units comprising pumps and their driving means the pump being electrically driven for submerged use
    • F04D13/10—Units comprising pumps and their driving means the pump being electrically driven for submerged use adapted for use in mining bore holes
    • 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
    • F04D25/0686—Units comprising pumps and their driving means the pump being electrically driven specially adapted for submerged use
    • 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
    • F04D29/02—Selection of particular materials
    • F04D29/023—Selection of particular materials 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
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/5806—Cooling the drive system
    • 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
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/584—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps cooling or heating the machine
    • 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
    • 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
    • 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
    • F05D2300/00—Materials; Properties thereof
    • F05D2300/40—Organic materials
    • F05D2300/43—Synthetic polymers, e.g. plastics; Rubber
    • 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 for compressing a Fordermediums, in particular for underwater operation, comprising a compressor and an electric motor, which comprises a stator and a rotor, wherein the stator of the motor is in communication with a separate cooling and is cooled by the separate cooling which cooling has a cooling medium.
  • a compressor unit for compressing a Fordermediums in particular for underwater operation, comprising a compressor and an electric motor, which comprises a stator and a rotor, wherein the stator of the motor is in communication with a separate cooling and is cooled by the separate cooling which cooling has a cooling medium.
  • a special Kuhlmediums for cooling a stator of a motor of a compressor unit for operation under water is the subject of the invention.
  • a compressor unit of the aforementioned type is already known from international patent application WO 02/099286 A1.
  • the compressor unit described therein provides for cooling, that from the Fordermedium, usually natural gas, in the region of an overcurrent of the radial stages of the compressor a Subset is branched off and, by means of which the components to be cooled are lapped, so that the heat loss, which has a magnitude of 100 - 200 kW, is dissipated with the cold medium to be pumped.
  • This concept for cooling the compressor unit is particularly advantageous because the transport medium to be transported anyway is used to dissipate the heat loss and no additional media exchange between the compressor unit and other components of the environment must be done.
  • this approach involves particular difficulties due to the aggressive chemistry of the media to be conveyed.
  • the fluid is heavily contaminated and can affect sensitive components due to the wash in their function. Therefore, for example, the
  • a further risk lies in the regularly porous insulation of the stator, which partially absorbs in the area of the circulation the conveying medium passing as cooling medium with the stator, so that it explodes in the event of a sudden drop in pressure, for example when the operation is interrupted Expansions of the absorbed medium in the pores of the insulation comes, which is destroyed as a result.
  • the invention has therefore taken on the task of providing cooling for the stator of an electric motor of a motor-driven compressor unit, in particular for subsea operation, on the one hand provides excellent reliability and on the other hand requires no material exchange with the environment during operation.
  • a particularly advantageous variant for the operation of the cooling is the use of a Pentaerythrittetracarbonklareesters as a cooling medium of the cooling of the stator of the motor during operation under water.
  • the high flash point of pentaerythritol tetracarboxylic acid ester and the associated reduced risk of fire are a significant advantage in the use according to the invention.
  • the low corrosion properties and the excellent compatibility with the insulating materials used in these areas such as mica tapes and epoxy resin or impregnating resins.
  • pentaerythritol tetracarboxylic esters examples include the ester fluids “Midel” or the “Shell Fluid 4600". These fluids are not just an excellent insulator and with the surrounding materials compatible, but also meet the high fire protection requirements and high environmental requirements, since they are classified in particular as not hazardous to water.
  • Cooling has a closed circuit in which the cooling medium (pentaerythritol tetracarboxylic acid ester) circulates. It makes sense if the cooling has a heat exchanger, which by means of a flow line and a
  • Return line is in communication with the cooled stator, wherein the cooling is designed such that the cooling medium (pentaerythritol tetracarboxylic) between the heat exchanger, the return line, the stator and the flow line circulates.
  • the cooling medium penentaerythritol tetracarboxylic
  • the circulation can be driven by means of natural confectioning, so that there is a natural circulation between the aforementioned components of the cooling medium.
  • the operation of the circulation of the cooling medium in the forced circulation by means of a pump is preferred. This should not be
  • Cooling system for the other elements of the compressor unit.
  • the separation of the cooling of the cooling system will meet the special requirements for the heat dissipation from the stator of a generic compressor unit.
  • the cooling system which among other things cools the compressor and also the rotor of the motor, provides the conveying medium as a cooling medium in a particularly advantageous manner, so that the heat loss is dissipated with the conveying medium to be compressed.
  • This is particularly useful in the subsea of natural gas, since this is regularly relatively cold.
  • the rotor can be usefully rewound from the Fordermedium in the open circuit.
  • Figure 1 is a schematic representation of a
  • Figure 1 shows schematically a section along a compressor unit 1 according to the invention, which has as essential components a motor 2 and a compressor 3 in a gas-tight housing 4.
  • the housing 4 accommodates the engine 2 and the compressor 3.
  • the housing 4 is provided with an inlet 6 and an outlet 7, through the inlet 6 by means of an intake manifold 8 to be compacted Fluid is sucked and flows through the outlet 7, the compressed fluid.
  • the compressor unit 1 is arranged vertically in operation, wherein a motor rotor 15 of the motor 2 via a
  • Compressor rotor 9 of the compressor 3 are united to form a common shaft 19 which rotates about a common vertical axis of rotation 60.
  • the motor rotor 15 is mounted in a first radial bearing 21 at the upper end of the motor rotor 15.
  • the compressor rotor 9 is mounted by means of a second radial bearing 22 in the lower position.
  • a thrust bearing 25 is provided at the upper end of the common shaft 19 - ie at the upper end of the motor rotor 15 - .
  • the radial bearings and the thrust bearing work electromagnetically and are each encapsulated.
  • the radial bearings extend in the circumferential direction around the respective bearing point the shaft 19 and are in this case 360 ° circumferential and undivided.
  • the compressor 3 designed as a centrifugal compressor has three compressor stages 11 which are in each case connected by means of an overcurrent 33. The to the
  • Compressor stages 11 resulting pressure differences ensure a thrust on the compressor rotor 9, which transmits to the motor rotor 15 and against the weight of the resulting entire rotor of the compressor rotor 9 and motor rotor 15, is directed so that in nominal operation as far as possible thrust balance.
  • the thrust bearing 25 can be dimensioned comparatively smaller than in a horizontal arrangement of the rotation axis 60th
  • the electromagnetic bearings 21, 22, 25 are cooled by means of a cooling system 31 to the operating temperature, wherein the cooling system 31 provides a tap 32 in an overcurrent of the compressor 3. From the tap 32, a portion of the Fordermediums, which is preferably natural gas, passed through a filter 35 and then guided by two separate pipes to the respective outer bearings (first radial bearing 21 and fourth radial bearing 24 and thrust bearing 25) by means of piping. This cooling by means of the cold Fordermediums (80) saves additional supply lines.
  • the motor rotor 15 is surrounded by a stator 16 which has a
  • Encapsulation 39 so that the aggressive Fordermedium 80 windings of the stator 16 is not damaged.
  • the encapsulation is preferably designed so that it can bear the full operating pressure. This is also because a separate cooling 40 is provided for the stator, in which a separate
  • Cooling medium (pentaerythritol tetracarboxylic acid ester) 56 circulates.
  • a pump 42 provides for a circuit via a heat exchanger 43.
  • At least the encapsulation 39 is made such that the portion extending between the stator 16 and the motor rotor 15, although having a thin wall thickness, is capable of withstanding the squeezing pressure upon complete filling of the stator cooling 40 by means of the cooling medium 56 , In this way, larger eddy current losses are avoided in this area and the efficiency of the overall arrangement improves.
  • the compressor rotor 9 expediently has a compressor shaft 10, on which the individual
  • Compressor stages 11 are mounted. This can preferably be done by means of a thermal shrinkage fit. Likewise, a positive connection, for example by means of polygons possible. Another embodiment provides for a fusion of different compressor stages 11 to each other, from which a one-piece compressor rotor 9 results.
  • FIG. 2 shows the motor rotor 15, the stator 16 and the cooling 40.
  • the cooling 40 has a cooling circuit 50, which is arranged through cooling channels 51, both sides of the cooling channels 51 collecting chambers 52 in these plenums subsequent lines, namely a flow line 53 and a remindlauttechnisch 54 and between the flow line 53 and the return line 54 arranged heat exchanger 55 extends.
  • the cooling medium 56 namely a pentaerythritol tetracarboxylic acid ester having the trade name
  • Cooling channels 51 of the stator 16 flows through the feed line 53 into the heat exchanger 55, where the cooling medium 56 is cooled by the return line 54 in a located at the return end of the cooling channels 51 plenum 52. The circuit is closed.
  • the temperature difference between flow and return is 1OK.
  • the heat exchanger is geodetically at the highest point (height difference ⁇ H), so that the natural convection is supported.
  • a pump 42 is arranged in the return.
  • the stator is sealed and in a gap between the rotor 15 and the stator 16 is carried out by means of the cooling medium 80, which surrounds the rotor 15.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

L'invention concerne une unité (1) de compression destinée à comprimer un fluide (62) refoulé, notamment pour un fonctionnement sous-marin, comprenant un compresseur (3) et un moteur (2) électrique qui comprend un stator (16) et un rotor (15), le stator (16) du moteur (2) étant en liaison avec un dispositif (40) de refroidissement séparé et étant refroidi au moyen du dispositif (40) de refroidissement séparé, ledit dispositif (40) de refroidissement présentant un fluide (56) de refroidissement. Le refroidissement de machines en fonctionnement sous-marin est particulièrement difficile en raison de la difficulté d'accès et de l'interdiction d'échange de substances avec l'environnement. Pour résoudre ce problème, il est proposé que le fluide (56) de refroidissement soit un ester d'acide tétracarbonique pentaérythrite.
EP07704565A 2006-03-24 2007-02-13 Unite de compression et utilisation d'un fluide de refroidissement Withdrawn EP1999378A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07704565A EP1999378A1 (fr) 2006-03-24 2007-02-13 Unite de compression et utilisation d'un fluide de refroidissement

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06006069 2006-03-24
EP07704565A EP1999378A1 (fr) 2006-03-24 2007-02-13 Unite de compression et utilisation d'un fluide de refroidissement
PCT/EP2007/051393 WO2007110271A1 (fr) 2006-03-24 2007-02-13 Unité de compression et utilisation d'un fluide de refroidissement

Publications (1)

Publication Number Publication Date
EP1999378A1 true EP1999378A1 (fr) 2008-12-10

Family

ID=38057555

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07704565A Withdrawn EP1999378A1 (fr) 2006-03-24 2007-02-13 Unite de compression et utilisation d'un fluide de refroidissement

Country Status (7)

Country Link
US (1) US20100232984A1 (fr)
EP (1) EP1999378A1 (fr)
CN (1) CN101410626A (fr)
BR (1) BRPI0709178A2 (fr)
NO (1) NO20084447L (fr)
RU (1) RU2394172C1 (fr)
WO (1) WO2007110271A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2103810A1 (fr) * 2008-03-19 2009-09-23 Siemens Aktiengesellschaft Unité de compresseur
DE102008031994B4 (de) 2008-04-29 2011-07-07 Siemens Aktiengesellschaft, 80333 Fluidenergiemaschine
US8513826B2 (en) * 2008-06-26 2013-08-20 Ed Mazur Wind turbine
EP2464875A1 (fr) * 2009-08-11 2012-06-20 General Electric Company Moteur à aimant permanent pour entraînement de pompe sous-marine
FR2966528B1 (fr) * 2010-10-25 2016-12-30 Thermodyn Groupe compresseur centrifuge
US9777746B2 (en) * 2013-09-03 2017-10-03 Dresser-Rand Company Motor cooling system manifold
JP6184018B2 (ja) * 2014-02-06 2017-08-23 三菱重工業株式会社 中間吸込型ダイアフラムおよび遠心回転機械
JP2016156282A (ja) * 2015-02-23 2016-09-01 三菱重工業株式会社 圧縮機システム
JP6642189B2 (ja) * 2016-03-29 2020-02-05 三菱重工コンプレッサ株式会社 遠心圧縮機
CA3115111A1 (fr) * 2018-11-19 2020-05-28 Smart E, Llc Compresseur centrifuge sans lubrification
CN110118184B (zh) * 2019-06-19 2020-12-11 徐州精一泵业有限公司 一种具有协同密封系统的全干式潜水电泵
CN111637341A (zh) * 2020-05-26 2020-09-08 南京林业大学 一种智能适老家居功能控制装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2042710C1 (ru) * 1990-09-28 1995-08-27 Дзе Лабризол Корпорейшн Охлаждающая жидкость
DE4437007A1 (de) * 1994-10-15 1996-04-18 Roehm Gmbh Biologisch abbaubare, als Schmierstoff geeignete Oligoester
RU2104448C1 (ru) * 1996-04-17 1998-02-10 Акционерное общество закрытого типа "ВИК" Холодильная установка и центробежный компрессорный агрегат холодильной установки
NL1018212C2 (nl) * 2001-06-05 2002-12-10 Siemens Demag Delaval Turbomac Compressoreenheid omvattende een centrifugaalcompressor en een elektromotor.
DE10158757A1 (de) * 2001-11-29 2003-06-18 Siemens Ag Schiffsantrieb

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007110271A1 *

Also Published As

Publication number Publication date
RU2394172C1 (ru) 2010-07-10
NO20084447L (no) 2008-12-16
RU2008142100A (ru) 2010-04-27
BRPI0709178A2 (pt) 2011-06-28
CN101410626A (zh) 2009-04-15
US20100232984A1 (en) 2010-09-16
WO2007110271A1 (fr) 2007-10-04

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