US20080317589A1 - Compressor Housing for Use at Low Temperatures - Google Patents

Compressor Housing for Use at Low Temperatures Download PDF

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Publication number
US20080317589A1
US20080317589A1 US12/086,789 US8678906A US2008317589A1 US 20080317589 A1 US20080317589 A1 US 20080317589A1 US 8678906 A US8678906 A US 8678906A US 2008317589 A1 US2008317589 A1 US 2008317589A1
Authority
US
United States
Prior art keywords
housing
low
temperature
turbocompressor
low temperatures
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
Application number
US12/086,789
Other languages
English (en)
Inventor
Ralf Bode
Beate Langenhan
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
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BODE, RALF, LANGENHAN, BEATE
Publication of US20080317589A1 publication Critical patent/US20080317589A1/en
Abandoned 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0448—Steel
    • 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
    • F05D2300/10—Metals, alloys or intermetallic compounds
    • F05D2300/17—Alloys
    • F05D2300/171—Steel alloys
    • 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
    • F05D2300/60—Properties or characteristics given to material by treatment or manufacturing
    • F05D2300/608—Microstructure

Definitions

  • the invention relates to a turbomachine, especially compressors or turbocompressors for use at low temperatures, the turbomachine comprising a housing.
  • Such turbomachines with housings are known. Especially housings of compressors or turbocompressors must be designed to withstand high internal pressure. It is known in this respect to use materials, especially low-temperature steels, with an austenitic crystal structure to produce the housing for very low operating temperatures ( ⁇ 120° C. ), the low-temperature steels with an austenitic crystal structure disadvantageously having very low strength. For this reason, current housings of compressors or turbocompressors for use at low temperatures are made with relatively great wall thicknesses, to be able to withstand the relatively high internal pressure with a very low strength of the material.
  • the austenitic steels also disadvantageously have low thermal conductivity and a high coefficient of thermal expansion, there is also the risk of great temperature gradients within the housing and the risk of thermal stresses even to the extent of permanent plastic deformations.
  • the International Patent Application WO 99/32837A already discloses a housing of a pump for low-temperature liquids comprising a low-temperature cast steel of martensitic structure with a low nickel content.
  • An Internet article http://www.acipco.com) already discloses various alloys that also represent the composition of the specific steel ASTM A 352, LC9.
  • the invention is based on the object of improving a housing, especially a housing for compressors, with preference for turbocompressors for use at low temperatures, by simple means to the extent that the housing can be produced with lower wall thicknesses even in the case of very low operating temperatures.
  • the object is achieved by the housing consisting of a low-temperature material with a martensitic structure.
  • the housing consists of a low-temperature cast steel, it expediently being provided that the housing consists of a low-temperature cast steel with a nickel content of 8.5 to 10%.
  • the material with the designation ASTM A 352 LC 9 has proven to be particularly suitable for this.
  • ASTM A 352 LC 9 has proven to be particularly suitable for this.
  • other low-temperature cast steels with a high nickel content are also suitable.
  • the object is also achieved by using a low-temperature material with a martensitic structure for producing a turbocompressor housing for use at low temperatures, the material ASTM A 352 LC 9 being suitable here with preference.
  • Low-temperature cast steels with a high nickel content are suitable in particular for low temperatures down to ⁇ 196° C.
  • the structure of nickel-alloyed steels is martensitic, having higher 0.2% tensile yield strengths, lower thermal expansions and higher thermal conductivity in comparison with steels with an austenitic crystal structure.
  • the higher tensile yield strength advantageously permits lower wall thicknesses of the housing, whereby less housing material is required, so that the costs for producing the housing are lowered considerably.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US12/086,789 2005-12-20 2006-12-15 Compressor Housing for Use at Low Temperatures Abandoned US20080317589A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP05027971.0 2005-12-20
EP05027971A EP1801254A1 (fr) 2005-12-20 2005-12-20 Carter de compresseur d'acier coulé pour des applications à basse température
PCT/EP2006/069753 WO2007071618A2 (fr) 2005-12-20 2006-12-15 Carter de compresseur pour applications a basse temperature

Publications (1)

Publication Number Publication Date
US20080317589A1 true US20080317589A1 (en) 2008-12-25

Family

ID=35840129

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/086,789 Abandoned US20080317589A1 (en) 2005-12-20 2006-12-15 Compressor Housing for Use at Low Temperatures

Country Status (5)

Country Link
US (1) US20080317589A1 (fr)
EP (2) EP1801254A1 (fr)
CN (1) CN101341272A (fr)
NO (1) NO20082884L (fr)
WO (1) WO2007071618A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10557358B2 (en) * 2015-02-06 2020-02-11 United Technologies Corporation Gas turbine engine containment structures

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462600A (en) * 1943-01-16 1949-02-22 Jarvis C Marble Turbine
US4719757A (en) * 1984-03-15 1988-01-19 Mitsubishi Jidosha Kogya Kabushiki Kaisha Variable-volume turbocharger
US6212891B1 (en) * 1997-12-19 2001-04-10 Exxonmobil Upstream Research Company Process components, containers, and pipes suitable for containing and transporting cryogenic temperature fluids

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2462600A (en) * 1943-01-16 1949-02-22 Jarvis C Marble Turbine
US4719757A (en) * 1984-03-15 1988-01-19 Mitsubishi Jidosha Kogya Kabushiki Kaisha Variable-volume turbocharger
US6212891B1 (en) * 1997-12-19 2001-04-10 Exxonmobil Upstream Research Company Process components, containers, and pipes suitable for containing and transporting cryogenic temperature fluids

Also Published As

Publication number Publication date
EP1966406A2 (fr) 2008-09-10
CN101341272A (zh) 2009-01-07
WO2007071618A3 (fr) 2007-08-09
EP1801254A1 (fr) 2007-06-27
WO2007071618A2 (fr) 2007-06-28
NO20082884L (no) 2008-06-24

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SIEMENS AKTIENGESELLSCHAFT, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:BODE, RALF;LANGENHAN, BEATE;REEL/FRAME:021176/0957

Effective date: 20080429

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION