EP2273130A1 - Gaskompressorgehäuse und System mit dem Gehäuse - Google Patents

Gaskompressorgehäuse und System mit dem Gehäuse Download PDF

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Publication number
EP2273130A1
EP2273130A1 EP09008922A EP09008922A EP2273130A1 EP 2273130 A1 EP2273130 A1 EP 2273130A1 EP 09008922 A EP09008922 A EP 09008922A EP 09008922 A EP09008922 A EP 09008922A EP 2273130 A1 EP2273130 A1 EP 2273130A1
Authority
EP
European Patent Office
Prior art keywords
channel
casing
gas compressor
cooling medium
wall
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Withdrawn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
EP09008922A
Other languages
English (en)
French (fr)
Inventor
Mark P.J. 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
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 filed Critical Siemens AG
Priority to EP09008922A priority Critical patent/EP2273130A1/de
Priority to EP10732922A priority patent/EP2452075A1/de
Priority to PCT/EP2010/059806 priority patent/WO2011003972A1/en
Publication of EP2273130A1 publication Critical patent/EP2273130A1/de
Withdrawn legal-status Critical Current

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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
    • F04D29/58—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
    • 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
    • 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
    • F04D29/40—Casings; Connections of working fluid
    • F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
    • F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps 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
    • F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
    • F04D29/056—Bearings
    • F04D29/058—Bearings magnetic; electromagnetic

Definitions

  • the present invention relates to gas compressors, particularly a gas compressor casing for cooling a gas compressor.
  • Gas compression systems are used in a wide variety of applications, including air compression for powering tools, gas compression for storage and transport of gas, etc.
  • motors or gas turbines are provided for driving the compression mechanism to compress the gas.
  • Gas compressors for example centrifugal gas compressors are usually driven by electric motors that are normally a standalone machine in a casing or within a casing that encases the motor and compressor.
  • the compressors particularly rotary ones, must be provided with means to cool the rotating parts during operation of the unit in order to prevent damages due to over-heating.
  • Generally compressors are designed to have an external cooling mechanism arranged outside the gas compressor. This involves external piping which carries the cooling medium, which is generally the comparatively cooled hydrocarbon gas, intended to be compressed by the gas compressor.
  • One of the risks is leakage of hydrocarbons to the environment. Such leakages could result in equipment failure or severe HSE (Health Safety Environment) danger.
  • the said object is achieved by providing gas compressor casing according to claim 1 and by a system according to claim 4 and a method according to claim 11.
  • the underlying idea is to have a gas compressor casing having at least one channel to carry a cooling medium.
  • This channel is enclosed within an inner surface and an outer surface of a wall of the gas compressor casing.
  • the channel is along the direction of the wall.
  • the gas compressor casing has at least one inlet in the casing, extending to said channel to receive the cooling medium from the gas compressor and at least one outlet in the casing, extending to said channel, to let the cooling medium enter different parts in the gas compressor especially the hot regions of the gas compressor.
  • Providing the channels inside the casing avoids the need of external piping to carry the cooling medium, thereby invariably reducing the number of splits and flanged connections. This helps in reducing the vulnerability of these types of intermediary connections and thereby obviating possible leakages. More over the current design provides an integrated structure for casing along with the gas compressor.
  • the channel is directed parallel to the inner surface and/or the outer surface of the wall of the gas compressor casing. This ensures that the cooling medium has a smooth flow inside the wall of the casing and also the design will ensure to have an equal pressure distribution across the wall of the casing.
  • the casing further comprises at least one additional channel to carry the cooling medium and the at least one additional channel is positioned functionally parallel to the original channel.
  • This enables to carry enough amount of the cooling medium for cooling the hot regions.
  • This further facilitates to have multiple channels with lesser diameters instead of one single channel with a large diameter. Having multiple channels with lesser diameters adds more stability, when comparing to having a single channel with a large diameter.
  • This type of a design ensures an equal pressure distribution across the wall of the casing.
  • Functionally parallel referred here does not strictly restrict the channel and the additional channel to be parallel as such. It shall be interpreted to have some sort of parallel orientation to achieve equal or stable pressure distribution.
  • the cooling medium adapted to flow through the channel in the casing is a gas provided from a pressurized gas supply, which needs to be compressed by the gas compressor.
  • the cooling medium is taken through the inlet from an initial stage of an impeller discharge for circulation in the channel. The solution is to use the hydrocarbon gas itself as the cooling medium. Since the gas is taken for the cooling process at a very early stage of the compression it would be much cooler and would have enough pressure to circulate through the channel.
  • the channel is adapted to provide the cooling medium for cooling the motor, the bearings and the close clearance gaps in the gas compressor. This enables to cool the various hot regions inside the gas compressor.
  • the casing is adapted to be used in a compressor having a compressor module and the motor, which shares a common rotor shaft. This enables the casing to be used in this type of a specific gas compressor design.
  • the at least one channel in the gas compressor casing is provided by drilling. In another alternative embodiment, the at least one channel in the gas compressor casing is provided by casting. These techniques enable to have different options for the manufacturing of the channels. These techniques could be chosen based on the cooling requirements or based on the mechanical integrity of the casing material used or even the complexity of the design of the compressor.
  • FIG 1 illustrates a diagram of a casing 2, of a gas compressor 100 according to an embodiment of the invention.
  • the casing 2 for gas compressor 100 comprises a channel 4 to carry a cooling medium 6.
  • the cooling medium 6, which is adapted to flow through the channel 4 in the casing 2 is a gas provided from a pressurized gas supply 208 as shown in FIG 2 , which needs to be compressed by the gas compressor 100.
  • the channel 4 is enclosed within an inner surface 8 and an outer surface 10 of a wall 12 of the casing 2 of the gas compressor 100; wherein said channel 4 is along the direction of the wall 12.
  • the casing 2 further comprises at least one inlet 14 extending to the channel 4 to receive the cooling medium 6 from the gas compressor 100.
  • the casing 2 also has at least one outlet 16, extending to said channel 4, to let the cooling medium 6 enter hot regions of the gas compressor 100 from the channel 4.
  • the channel 4 is directed parallel to the inner surface 8 or the outer surface 10 of the wall 12 of the casing 2 of the gas compressor 100.
  • the channel 4 in the casing 2 of the gas compressor 100 is provided by drilling.
  • casted-in channels could be used in case of casted casing.
  • FIG 2 illustrates a block diagram of a system 200 for compressing gas along with a casing according to an embodiment of the invention.
  • the system 200 comprises a casing 2, a compressor module 202 having a rotor 204 and a motor 206 to drive the rotor 204 of the compressor module 202.
  • the cooling medium 6 is taken through the inlet 14 from an initial discharge stage of an impeller 210 for circulation in the channel 4.
  • the channel 4 is adapted to provide the cooling medium 6 for cooling the hot regions in the gas compressor 100.
  • the gas compressor 100 has a common rotor shaft 220 for the compressor module 202 and the motor 206.
  • the gas compressor having the compressor module 202 and the motor 206, sharing the common shaft 220 can be mounted vertically or horizontally.
  • the hot region of the gas compressor 100 includes close clearance gaps (216, 218) in the gas compressor 100. All close clearance gaps in the gas compressor 100 need cooling. Due to the high density of the high pressure gas and the high velocity of the high speed running shaft during the compressor operation, the heat generated is significant. This needs to be cooled. There could be close clearance gaps in the magnetic bearings 212 and 214. Practically this means close clearance gaps in the magnetic bearings i.e. between the outer diameter of the rotating shaft sleeve and the inner diameter of the bearing stator, which is gap 216 as shown for bearing 212, and in the main motor i.e. between the outer diameter of the rotor shaft 220 and inner diameter of the stator 222, which is the gap 218.
  • the channel 4 could be further extended, if needed using piping to supply the cooling medium to the hot regions or hot parts inside the gas compressor 100.
  • the cooling medium 6, which is now hot, is driven back to the suction nozzle 224 of the gas compressor 100.
  • a discharge nozzle 226 is used by the system 200 to supply the compressed hydrocarbon gas for further practical use for other associated systems.
  • FIG 3 illustrates a casing split 300 of the compressor casing according to an embodiment of the invention.
  • the casing 2 may further comprise at least one additional channel 302 to carry the cooling medium 6.
  • the additional channel 302 could be arranged parallel to the original channel 4.
  • the channel 4 along with the additional channel 302 returns the cooling medium 6 back to the gas compressor 100. This enables to have a fresh intake of the cooling medium into the channel 4 or/and the additional channel 302 for cooling the hot regions, since the cooling arrangement acts more or less like a closed circuit.
  • Subsea environment equipment design shall target the highest level of reliability since maintenance costs are extremely high, especially for heavy equipment at deeper water.
  • One of the risks here is leakage of hydrocarbons to the seawater environment or vice versa i.e. sea water ingress into the compressor system. Such leakages could result in equipment failure or severe HSE danger.
  • casing splits 308 dedicated axial sealing elements could be used. Individual sealing element 304 could be used in the case of single channel and combined sealing element 306 in case of parallel channels.
  • a method of manufacturing a casing 2 comprises of providing a channel 4 in a wall 12 of the casing 2 and then providing at least one inlet 14 in the wall 12 of the casing 2, which extends to said channel 4, to receive a cooling medium 6 from a gas compressor 100.
  • the method of manufacturing also provides at least one outlet 16 in the wall 12 of the casing 2, which extends to said channel 4, to let the cooling medium 6 enter the gas compressor 100 from the channel 4.
  • the channel 4 in the wall 12, the at least one inlet 14 and the at least one outlet 16 of the casing 2 of the gas compressor 100 is provided by drilling or casting. During drilling, there is possibility that openings are created in the outer surface of the wall 12. Welding is performed to seal an opening created during drilling in the outer surface 10 of the wall 12. Channels with required dimensions could be made in the casing 2 based on the cooling needs and also based on the thickness of the wall 12 of the casing 2.
  • FIG 4 shows a channel 402, made in a portion 400 of the casing 2.
  • a bore could be made from each of the surfaces 404, 406 and 408 to intersect at particular locations so as to create a continuous channel for the flow of the cooling medium 6 as shown in FIG 4 .
  • the surface 404 as the outer surface of the casing the head of the bore at the surface 404 shall be closed by a welding plug 410 as shown, to ensure that no gas is leaked.
  • the present invention introduces a casing 2 of the gas compressor 100 having at least one channel 4 to carry a cooling medium 6.
  • This channel 4 is enclosed within an inner surface 8 and an outer surface 10 of a wall 12 of the casing 2 and is in the direction of the wall 12.
  • the casing 2 has at least one inlet 14 in the casing 2, extending to said channel 4 to receive the cooling medium 6 from the gas compressor 100 and at least one outlet 16 in the casing 2, extending to said channel 4, to let the cooling medium 6 enter hot regions of the gas compressor from the channel.

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  • 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)
EP09008922A 2009-07-08 2009-07-08 Gaskompressorgehäuse und System mit dem Gehäuse Withdrawn EP2273130A1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09008922A EP2273130A1 (de) 2009-07-08 2009-07-08 Gaskompressorgehäuse und System mit dem Gehäuse
EP10732922A EP2452075A1 (de) 2009-07-08 2010-07-08 Gaskompressorgehäuse und system mit dem gehäuse
PCT/EP2010/059806 WO2011003972A1 (en) 2009-07-08 2010-07-08 A gas compressor casing and a system comprising the casing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09008922A EP2273130A1 (de) 2009-07-08 2009-07-08 Gaskompressorgehäuse und System mit dem Gehäuse

Publications (1)

Publication Number Publication Date
EP2273130A1 true EP2273130A1 (de) 2011-01-12

Family

ID=41398931

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09008922A Withdrawn EP2273130A1 (de) 2009-07-08 2009-07-08 Gaskompressorgehäuse und System mit dem Gehäuse
EP10732922A Withdrawn EP2452075A1 (de) 2009-07-08 2010-07-08 Gaskompressorgehäuse und system mit dem gehäuse

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP10732922A Withdrawn EP2452075A1 (de) 2009-07-08 2010-07-08 Gaskompressorgehäuse und system mit dem gehäuse

Country Status (2)

Country Link
EP (2) EP2273130A1 (de)
WO (1) WO2011003972A1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246606A (zh) * 2016-09-19 2016-12-21 珠海格力电器股份有限公司 压缩机及空调器
FR3072428A1 (fr) * 2017-10-16 2019-04-19 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dispositif et procede de compression et machine de refrigeration
WO2019077213A1 (fr) * 2017-10-16 2019-04-25 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dispositif et procédé de compression

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR941756A (fr) * 1941-06-23 1949-01-20 Pompe à deux aubages avec refoulement axial
DE915137C (de) * 1951-10-14 1954-07-15 Hermann Wenger Luftgekuehlter Axialverdichter
EP1321680A2 (de) * 2001-12-22 2003-06-25 Miscel Oy Stömungsmaschinen-Aggregat
US20040179947A1 (en) * 2002-12-19 2004-09-16 R & D Dynamics Corporation Motor driven two-stage centrifugal air-conditioning compressor

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB877078A (en) * 1959-02-26 1961-09-13 Svenska Rotor Maskiner Ab Improvements in or relating to rotary machines of the intermeshing screw type

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR941756A (fr) * 1941-06-23 1949-01-20 Pompe à deux aubages avec refoulement axial
DE915137C (de) * 1951-10-14 1954-07-15 Hermann Wenger Luftgekuehlter Axialverdichter
EP1321680A2 (de) * 2001-12-22 2003-06-25 Miscel Oy Stömungsmaschinen-Aggregat
US20040179947A1 (en) * 2002-12-19 2004-09-16 R & D Dynamics Corporation Motor driven two-stage centrifugal air-conditioning compressor

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246606A (zh) * 2016-09-19 2016-12-21 珠海格力电器股份有限公司 压缩机及空调器
FR3072428A1 (fr) * 2017-10-16 2019-04-19 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dispositif et procede de compression et machine de refrigeration
WO2019077213A1 (fr) * 2017-10-16 2019-04-25 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dispositif et procédé de compression
WO2019077212A1 (fr) * 2017-10-16 2019-04-25 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Dispositif et procédé de compression et machine de réfrigération
CN111212981A (zh) * 2017-10-16 2020-05-29 乔治洛德方法研究和开发液化空气有限公司 压缩装置和方法以及制冷机
CN111226042A (zh) * 2017-10-16 2020-06-02 乔治洛德方法研究和开发液化空气有限公司 压缩装置和方法
US11384768B2 (en) 2017-10-16 2022-07-12 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Compression device and method and refrigeration machine
US11519425B2 (en) 2017-10-16 2022-12-06 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Compression device and method
AU2018350939B2 (en) * 2017-10-16 2024-01-04 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Compression device and method

Also Published As

Publication number Publication date
WO2011003972A1 (en) 2011-01-13
EP2452075A1 (de) 2012-05-16

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