EP1999376A1 - Procédé permettant de faire fonctionner une unité de compresseur et unité de compresseur - Google Patents

Procédé permettant de faire fonctionner une unité de compresseur et unité de compresseur

Info

Publication number
EP1999376A1
EP1999376A1 EP07727230A EP07727230A EP1999376A1 EP 1999376 A1 EP1999376 A1 EP 1999376A1 EP 07727230 A EP07727230 A EP 07727230A EP 07727230 A EP07727230 A EP 07727230A EP 1999376 A1 EP1999376 A1 EP 1999376A1
Authority
EP
European Patent Office
Prior art keywords
antifreeze
compressor unit
compressor
injected
natural gas
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Withdrawn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
EP07727230A
Other languages
German (de)
English (en)
Inventor
Gaston Mathijssen
Mark Van Aarsen
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
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 EP07727230A priority Critical patent/EP1999376A1/fr
Publication of EP1999376A1 publication Critical patent/EP1999376A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • F04D29/58—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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
    • F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
    • F04D29/705—Adding liquids
    • 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
    • F05D2260/00—Function
    • F05D2260/60—Fluid transfer
    • F05D2260/607—Preventing clogging or obstruction of flow paths by dirt, dust, or foreign particles

Definitions

  • the invention relates to a method for operating a compressor unit, in particular for underwater operation.
  • the invention relates to a compressor unit, in particular for underwater operation, comprising a compressor and an electric motor, which
  • Compressor unit comprising a housing having an inlet and an outlet for the conveying medium with a rotational axis about which a rotor of the compressor unit is rotatable.
  • Compressor which should serve the promotion of natural gas. Due to the special operating conditions, in particular because of the very limited accessibility both for maintenance purposes and by means of supply lines, the professional world faces great challenges. Relevant environmental regulations prohibit any material exchange between the units to be installed and the surrounding seawater. In addition, the seawater is an aggressive medium and extreme pressure and temperature conditions can be found in the different sea depths. Another requirement is that the aggregates on the one hand have an extremely long service life and on the other hand have to be designed virtually maintenance-free. To make matters worse, a significant contamination of the partially chemically aggressive medium to be promoted.
  • a compressor unit of the aforementioned type is already known from international patent application WO 02/099286 A1. With the objective of uncompromising simplification to reduce maintenance and at the same time high life is proposed there, the compressor rotor with the To make motor rotor in one piece and to store each end by means of only two radial bearings.
  • the invention has the object to provide a method for operating a compressor and a compressor unit, which minimizes the risk of gas hydrate formation, for example in the undersea production of natural gas, as far as possible.
  • a particular advantage of the invention lies in the reliable protection against hydrate formation due to the injection of antifreeze.
  • Both vulnerable components of the compressor unit can be protected as well as the entire conveying path starting from the point of injection of the fluid to the later deposition thereof.
  • the method is therefore also particularly expedient because, in the context of the chemical treatment of natural gases in a subsequent to the compressor unit after a pipeline base station, a separation of undesirable additives anyway.
  • the reliability gained manifests itself both in a higher availability of the compressor and in a high degree of safety against clogging hydrate formation in the pipeline which adjoins the compressor unit.
  • the injection of antifreeze can be done in the intake or directly in the compressor.
  • Loading of components of the compressor unit with the antifreeze is particularly useful for the bearings, the electric motor and other moving components. If there is a particular risk of hydrate formation in the overflow region of individual compressor stages, injection of antifreeze may also be expediently carried out here.
  • the primary field of application of the invention is the extraction of natural gas, since the risk of the formation of gas hydrates is relatively high here.
  • Figure 1 is a schematic representation of a
  • the compressor unit 1 is arranged vertically in operation, wherein a motor rotor 15 of the motor 2 are united via a compressor rotor 9 of the compressor 3 to 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 about the respective bearing point of the shaft 19 and are in this case 360 ° circumferentially 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 overflow 33.
  • the resulting at the compressor stages 11 pressure differences provide for 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, directed, so that in nominal operation as far as possible thrust balance he follows.
  • 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 not shown in detail to the operating temperature, wherein the cooling system provides a tap in an overflow 33 of the compressor 3. From the tap a part of the pumped medium, which is preferably natural gas, passed through a filter by means of pipes and then through two separate pipes to the respective outer
  • the motor rotor 15 is surrounded by a stator 16, which has an encapsulation, so that the aggressive conveying medium 80 does not damage windings of the stator 16.
  • the encapsulation is preferably designed so that it can bear the full operating pressure. This is also because a separate cooling is provided for the stator, in which a separate cooling medium circulates.
  • 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.
  • the delivery medium 80 or natural gas NG first passes from the natural reservoir into a
  • Condensate 81 which condensates 82, among other water, separated from the gaseous phase.
  • the condensates 82 pass into a condensate line 84, into which also a subsequent dewatering line 95 opens, which introduces condensates separated in the compressor unit into the condensate line 84.
  • the condensates 82 are conveyed by a condensate pump 85 into a mixing unit 86, in which mixing with the compressed natural gas NG or
  • Delivery medium 80 takes place.
  • the resulting mixture is conveyed into a pipeline 87 towards a base station 89.
  • the compressor unit 1 has a system for distributing antifreeze 73 comprising distribution lines 94 and injection modules 72.
  • the antifreeze 73 is conveyed from a collection tank 92 by means of a metering pump 93 to the various injection modules 72 on the compressor unit 1.
  • the injection modules 72 locally the first radial bearing 21, the thrust bearing 25, the second radial bearing 22, the overflows 33 are acted upon.
  • Intake manifold 8 is another injection module 72, by means of which the antifreeze 73 is injected directly into the sucked in conveying medium 80.
  • the injected antifreeze 73 is partially, namely as far as deposited in the compressor unit 1, by a drainage 96 (at the "single-drain point") of
  • Compressor unit 1 discharged into the drainage line 95. The remainder is conveyed together with the compressed natural gas NG through the outlet 7 into the mixing unit 86.
  • the antifreeze 73, the natural gas NG and the condensate 82 are conveyed to the base station 89 to the earth's surface. Hydrate formation in the pipeline 87 is excluded due to the antifreeze 73 carried along.
  • a further condensate separator 88 provides for a drying of the natural gas NG, the condensate including the antifreeze 73 entering a conditioner 90, in which the antifreeze 73 is separated from the remaining condensate 82.
  • the treated antifreeze 73 passes through a return line 91 along the pipeline 87 back into the collection tank 92.
  • Antifreeze 73 ensures safety against hydrate formation on the one hand and compliance with relevant environmental standards on the other hand.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Compressor (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

La présente invention concerne un procédé permettant de faire fonctionner une unité de compresseur (1), notamment pour un fonctionnement sous l'eau. Lors d'une compression, il est nécessaire de réduire au minimum le risque de formation d'hydrate de gaz. Le procédé selon cette invention permet de supprimer ce risque du fait que des composants de l'unité de compresseur (1) sont soumis à l'action d'un antigel (73) et/ou qu'un antigel (73) est injecté dans la voie d'écoulement du milieu transporté (gaz naturel NG) qui doit être comprimé. Cette invention concerne également une unité de compresseur conçue pour fonctionner selon ledit procédé.
EP07727230A 2006-03-24 2007-03-22 Procédé permettant de faire fonctionner une unité de compresseur et unité de compresseur Withdrawn EP1999376A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07727230A EP1999376A1 (fr) 2006-03-24 2007-03-22 Procédé permettant de faire fonctionner une unité de compresseur et unité de compresseur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06006071 2006-03-24
PCT/EP2007/052755 WO2007110368A1 (fr) 2006-03-24 2007-03-22 Procédé permettant de faire fonctionner une unité de compresseur et unité de compresseur
EP07727230A EP1999376A1 (fr) 2006-03-24 2007-03-22 Procédé permettant de faire fonctionner une unité de compresseur et unité de compresseur

Publications (1)

Publication Number Publication Date
EP1999376A1 true EP1999376A1 (fr) 2008-12-10

Family

ID=38179827

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07727230A Withdrawn EP1999376A1 (fr) 2006-03-24 2007-03-22 Procédé permettant de faire fonctionner une unité de compresseur et unité de compresseur

Country Status (7)

Country Link
US (1) US8262365B2 (fr)
EP (1) EP1999376A1 (fr)
CN (1) CN101410625A (fr)
BR (1) BRPI0709145A2 (fr)
NO (1) NO20084446L (fr)
RU (1) RU2396465C2 (fr)
WO (1) WO2007110368A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101379298B (zh) * 2006-02-03 2011-01-26 西门子公司 压缩机单元
EP2103810A1 (fr) * 2008-03-19 2009-09-23 Siemens Aktiengesellschaft Unité de compresseur
EA026354B1 (ru) 2012-08-24 2017-03-31 ГЛАКСОСМИТКЛАЙН ЭлЭлСи Пиразолопиримидиновые соединения
JP2016023578A (ja) * 2014-07-18 2016-02-08 三菱重工業株式会社 圧縮機システム、これを備える海中生産システム、及び圧縮機の洗浄方法
JP2016023452A (ja) * 2014-07-18 2016-02-08 三菱重工業株式会社 圧縮機システム、これを備える海中生産システム、及び圧縮機の洗浄方法
ITUB20150643A1 (it) * 2015-05-22 2016-11-22 Nuovo Pignone Tecnologie Srl Motocompressore per installazioni sottomarine
EP3514396A1 (fr) 2018-01-22 2019-07-24 Siemens Aktiengesellschaft Dispositif pourvu d'un rotor et de deux paliers
JP7108515B2 (ja) * 2018-10-25 2022-07-28 三菱重工コンプレッサ株式会社 圧縮機

Family Cites Families (9)

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Publication number Priority date Publication date Assignee Title
GB370003A (en) 1930-12-29 1932-03-29 Benny Lockspeiser Improvements in or relating to compressed air or gas systems or apparatus
US4768888A (en) * 1987-04-29 1988-09-06 Mcneil (Ohio) Corporation Unitary bearing member and motor incorporating the same
DE19623553A1 (de) * 1996-06-13 1997-12-18 Klein Schanzlin & Becker Ag Flüssigkeitsgefüllter Unterwassermotor
RU2154231C1 (ru) * 1999-02-22 2000-08-10 Центральное конструкторское бюро морской техники "Рубин" Атомная подводная газоперекачивающая станция
US6676847B2 (en) * 2000-02-25 2004-01-13 Ashland Inc. Monocarboxylic acid based antifreeze composition for diesel engines
GB0204139D0 (en) * 2002-02-21 2002-04-10 Alpha Thames Ltd Electric motor protection system
NO323324B1 (no) 2003-07-02 2007-03-19 Kvaerner Oilfield Prod As Fremgangsmate for regulering at trykket i en undervannskompressormodul
US6955705B1 (en) * 2004-06-02 2005-10-18 Rdc Research Llc Method and system for compressing and dehydrating wet natural gas produced from low-pressure wells
JP4747775B2 (ja) * 2005-01-11 2011-08-17 株式会社豊田自動織機 スクロール型圧縮機

Non-Patent Citations (1)

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Title
See references of WO2007110368A1 *

Also Published As

Publication number Publication date
US8262365B2 (en) 2012-09-11
US20090311108A1 (en) 2009-12-17
RU2008142114A (ru) 2010-04-27
WO2007110368A1 (fr) 2007-10-04
RU2396465C2 (ru) 2010-08-10
CN101410625A (zh) 2009-04-15
BRPI0709145A2 (pt) 2011-06-28
NO20084446L (no) 2008-12-16

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