US20080317589A1 - Compressor Housing for Use at Low Temperatures - Google Patents
Compressor Housing for Use at Low Temperatures Download PDFInfo
- 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
Links
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 10
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 5
- 239000003320 cold-resistant material Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
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)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a turbo machine comprising a housing. Said turbo machine is designed especially as a turbo compressor for use at low temperatures, the housing preferably being made of a cold-resistant material that has a martensitic structure.
Description
- This application is the US National Stage of International Application No. PCT/EP2006/069753, filed Dec. 15, 2006 and claims the benefit thereof. The International Application claims the benefits of European application No. 05027971.0 filed Dec. 20, 2005, both of the applications are incorporated by reference herein in their entirety.
- 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.
- Since 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.
- According to the invention, the object is achieved by the housing consisting of a low-temperature material with a martensitic structure.
- It is favorable for the purposes of the invention if 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. Of course, other low-temperature cast steels with a high nickel content are also suitable.
- According to the invention, however, 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. On account of the advantageous alloy composition, 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. Altogether, the combination of properties of low-temperature cast steels with a high nickel content, especially the material ASTM A 352 LC 9, has the effect that better temperature gradients are achieved and thermal stresses are reduced, whereby the risk of plastic deformations is eliminated.
Claims (7)
1-6. (canceled)
7. A turbocompressor housing for use at low temperatures, comprising:
a housing comprised of a low-temperature material having a martensitic structure.
8. The turbocompressor housing as claimed in claim 7 , wherein the housing consists of a low-temperature cast steel.
9. The turbocompressor housing as claimed in claim 8 , wherein the housing consists of a low-temperature cast steel with a nickel content of 8.5 to 10%.
10. The turbocompressor housing as claimed in claim 9 , wherein the housing consists of the material ASTM A 352 LC 9.
11. The turbocompressor housing as claimed in claim 10 , wherein the housing is a compressor housing for use at low temperature.
12. The turbocompressor housing as claimed in claim 11 , wherein the housing is a compressor housing of a turbocompressor for use at low temperature.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05027971.0 | 2005-12-20 | ||
| EP05027971A EP1801254A1 (en) | 2005-12-20 | 2005-12-20 | Compressor casing made of cast steel for low temperature applications |
| PCT/EP2006/069753 WO2007071618A2 (en) | 2005-12-20 | 2006-12-15 | Cast steel compressor housing for use at low temperatures |
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 (en) |
| EP (2) | EP1801254A1 (en) |
| CN (1) | CN101341272A (en) |
| NO (1) | NO20082884L (en) |
| WO (1) | WO2007071618A2 (en) |
Families Citing this family (1)
| 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)
| 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 |
-
2005
- 2005-12-20 EP EP05027971A patent/EP1801254A1/en not_active Withdrawn
-
2006
- 2006-12-15 US US12/086,789 patent/US20080317589A1/en not_active Abandoned
- 2006-12-15 WO PCT/EP2006/069753 patent/WO2007071618A2/en not_active Ceased
- 2006-12-15 CN CNA2006800482027A patent/CN101341272A/en active Pending
- 2006-12-15 EP EP06830647A patent/EP1966406A2/en not_active Withdrawn
-
2008
- 2008-06-24 NO NO20082884A patent/NO20082884L/en not_active Application Discontinuation
Patent Citations (3)
| 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 |
|---|---|
| CN101341272A (en) | 2009-01-07 |
| EP1966406A2 (en) | 2008-09-10 |
| NO20082884L (en) | 2008-06-24 |
| WO2007071618A3 (en) | 2007-08-09 |
| EP1801254A1 (en) | 2007-06-27 |
| WO2007071618A2 (en) | 2007-06-28 |
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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 |