CN101821430A - FIC installation and method for operating Fic installation in the pressure range above atmospheric pressure - Google Patents
FIC installation and method for operating Fic installation in the pressure range above atmospheric pressure Download PDFInfo
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- CN101821430A CN101821430A CN200780101047A CN200780101047A CN101821430A CN 101821430 A CN101821430 A CN 101821430A CN 200780101047 A CN200780101047 A CN 200780101047A CN 200780101047 A CN200780101047 A CN 200780101047A CN 101821430 A CN101821430 A CN 101821430A
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- fic
- described method
- reaction chamber
- pressure
- reactant gases
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/002—Cleaning of turbomachines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/60—Efficient propulsion technologies, e.g. for aircraft
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- Physical Or Chemical Processes And Apparatus (AREA)
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Abstract
The invention relates to a FIC installation that can be operated in a pressure range above atmospheric pressure, such that, compared to prior art, a reactive gas (7) can better penetrate the cracks to be cleaned, thereby intensifying the chemical reaction between the reactive gas (8) and the oxide.
Description
Technical field
The method that the present invention relates to a kind of FIC equipment and in overvoltage region, move this FIC equipment.
Background technology
The gas turbine member of immobilized gas turbine or aircraft turbine will overhaul after use, wherein oxide compound must be removed from the crack of these members, so that can keep in repair these members.
Use so-called FIC method (Fluoridionen-Cleaning (fluorion cleaning)) at this.
At this member is delivered in the reaction chamber, then with reactant gases for example halogen gas import in the reaction chamber, the reaction between oxide compound and the reactant gases then appears, thus oxide compound is removed from member.
Summary of the invention
Therefore, task of the present invention is, a kind of FIC equipment and a kind of method that is used to move FIC equipment are described, this method makes chemical reaction be strengthened and makes cleanup action be improved.
This task is by being resolved by the described FIC equipment of claim 1 and by the described method of claim 7.
List other favourable measure in the dependent claims, these measures can at random be made up mutually to be used to obtain other advantage.
Description of drawings
Wherein:
Fig. 1 is a FIC equipment,
Fig. 2-the 5th, the exemplary time of the pressure of FIC device interior distributes,
Fig. 6, the 7th, the synoptic diagram of the flow process of purging method,
Fig. 8 is a gas turbine,
Fig. 9 is the skeleton view of turbine blade, and
Figure 10 is the skeleton view of combustion chamber.
Embodiment
In Fig. 1, schematically show FIC equipment 1.This FIC equipment 1 comprises reaction chamber 10 at least, can put at least one member 4,120,130,155 (Fig. 8,9,10) in this reaction chamber 10.
Described member 4,120,130,155 has oxidation products and/or the corrosion product that mainly is present in the crack.Described oxidation products and corrosion product also often exist as layer region (Schichtbereich).
By valve 13 in other words pump 13 can with reactant gases or reaction mixture, preferably with halogenide preferably hydrogen fluoride (HF) import in the reaction chamber 10, thereby can between oxidation products that remains to be removed on reactant gases and the member 4,120,130,155 and/or corrosion product, react there.By the present invention, so design FIC equipment, thereby can regulate pressure p than normal atmosphere p by means of device 13
At(approximating 1.01bar at normal temperatures) is big.
Overvoltage region is meant at least greater than normal atmosphere p
AtEspecially greater than 1.1bar (=110kPa) pressure.
Maximum overpressure in the preferred reaction chamber 10 is 1.4bar (140kPa).
Reactant gases 7 has sealing member at this reaction chamber 10, so that can not selected from reaction chamber 10 in overvoltage region as device 13.
Scheme or additional project as an alternative, exist valve 13, pressure in 13 pairs of reaction chambers 10 of this valve is regulated, because the organization of supply of reactant gases 7 has overvoltage, that is to say that the Surface Pressure Vessel that has exemplarily the hydrogen fluoride (HF) that uses has greater than normal atmosphere especially greater than the overvoltage of 1.4bar, thereby must regulate pressure from this pressurized vessel.
Preferred described device 1 comprises pump 13 as device, so designs this pump 13, makes it to produce overvoltage in reaction chamber 10.
The exemplary time that the purging method of the preferred FIC of using equipment 1 enforcement has been shown in following form and in Fig. 2 to 5 distributes.
| Segmentation | Time | Pressure | ??HF | ??H 2 |
| Segmentation 1 | ??t3 | ??PH | ??0 | ??r3 |
| Segmentation 2 | ??t1 | ??PH | ??0 | ??r3 |
| Segmentation 3 | ??t1 | ??PN | ??0 | ?? |
| Segmentation | ||||
| 4 | ??t3 | ??PH | ??r1 | ??r2 |
| Segmentation 5 | ??t2 | ??PH | ??0 | ??r3 |
| Segmentation n-2 | ??t1 | ??PN | ??0 | ??r2 |
| Segmentation n-1 | ??t2 | ??PH | ??0 | ??r3 |
| Segmentation n | ??PH | ??0 | ??0 |
Wherein turnover rate r1, r2, r3 are preferably r3＞r2＞r1 and pressure P
H＞P
N, P especially
H＞1atm, and hold-time t1, t2, t3 are preferably t3＞t2＞t1.
Repeated segmentation 4,5 and 3 after first segmentation 1,2, they are one-period.
The time of having drawn the pressure p in the reaction chamber 10 in Fig. 2 distributes.
Originally pressure distribution is not shown here.
When beginning, the temperature T in the reaction chamber 10 is heated to specific temperature, at this especially above 1000 ℃.
Preferably after the initial stage, at least temporarily pressure p is regulated greater than normal atmosphere P
At, and at hold-time t
hIn pressure p is kept constant.
This is high pressure phase (P
H).
By in the pressure range of super-atmospheric pressure (greater than p
At) interior filling, the more reactant gases of reaction gas mixtures is squeezed in the crack to be cleaned.The improvement that this causes the reinforcement of chemical reaction and causes cleanup action thus.
Preferably constantly aspirate the gas in the reaction chamber 10, be used to discharge the reaction product of consumption, wherein replenish new gas (reactant gases, nonreactive gas).Improved productivity thus.
At high pressure phase P
HIn time length t
sIn, with reactant gases 7 and preferably reaction chamber 10 is carried out purge with nonreactive gas.This is a reaction gas mixtures.
Equally, described nonreactive gas can be a gaseous mixture, but this gaseous mixture does not react with member.
Time length t
sPreferably less than P
HHold-time t
h
The turnover rate r1 of reactant gases or reaction gas mixtures is preferably less than the turnover rate r3 of nonreactive gas, because otherwise reaction chamber 10 can be corroded.
Purge time (t in high pressure phase
h-t
s) lining, the turnover rate of nonreactive gas is preferably brought up to r3 (r3＞r2).
This is crack wash phase S4.
Remaining hold-time (t in high pressure phase
h-t
s) lining, only also use nonreactive gas (reactant gas flow rate=0), preferred hydrogen (H
2).Preferred (t
h-t
s)＞0.This is crack purge stage S5.
Equally in whole high pressure phase, the mixture (t that can use reactant gases or constitute by reactant gases and nonreactive gas
h-t
s)=0.
At hold-time t
hAfterwards, pressure p is reduced to less than p
AtPressure P
N(=periods of low pressure) and after the specific hold-time, be adjusted to again and be preferably greater than p
AtPressure, method is that the raising by the turnover rate of reactant gases or reaction gas mixtures imports to reactant gases or reaction gas mixtures in the reaction chamber 10.
Reaction gas mixtures produced by converging of reactant gases and nonreactive gas.
This is reaction chamber purge stage S3.
This process (54,55,53) can periodically repeat.
Equally can enough P
H=p
AtAnd P
N＜p
AtImplement described method.
The another kind of time that figure 3 illustrates purging method distributes.
Different with Fig. 2 is, here with periods of low pressure P
NIn pressure p be reduced to normal atmosphere p
AtPerhaps preferably remain on normal atmosphere p
AtAbove (not shown).
In Fig. 4,, that is to say pressure p is remained on high pressure phase P as periodically improving and reduce pressure p in that Fig. 2 is the same in 3
HWith periods of low pressure P
N, wherein at the beginning for some cycles with high pressure phase P
NIn pressure p be restricted to normal atmosphere p
At
Equally when described method begins, high pressure phase P
HIn pressure p also can be less than normal atmosphere p
At
After the regular hour, that is to say after a few sub-high pressure conversions, the pressure p in the high pressure phase is adjusted to greater than p
AtPressure, and preferably pressure p is kept one section time length t there again
hWhen keep-uping pressure, use and compare p
AtBig pressure p is looked like down then at Fig. 2 or equally continuation illustrated in fig. 3 and is kept this pressure.
Especially when purging method begins, can clean according to implement FIC by the method for prior art, wherein there with pressure p
AtBe adjusted in 200mbar and less than between the atmospheric pressure, and periodically reduce and improve again described pressure p.Especially when described method begins, react and also carrying out well, because can freely touch enough reaction product that can contact easily.
But, in the ensuing method steps of described purging method, more and more be difficult to arrive remaining reaction product, thereby equipment then moves in the pressure range of super-atmospheric pressure with reactant gases.
The another kind of time that figure 5 illustrates described purging method distributes.
At this, high pressure phase P
HIn pressure side p periodically greater than normal atmosphere p
AtPressure p be equal to or less than/equal normal atmosphere p
AtPressure between change.
In Fig. 5 at first with high pressure phase P
HIn pressure regulate greater than p
At, then following high pressure phase P
HIn and p
AtThe pressure that equates wherein repeats this point.Equally, certainly, can be with the p=p in the high pressure phase
AtPressure begin, perhaps following the p of ratio that has in the high pressure phase as next step
AtThe pressure of big pressure.
With p＜p
AtPerhaps p＞p
AtCarrying out the multiple number of times can at random change.
It is specific with being transferred to one on the temperature when method begins especially greater than 1000 ℃ temperature.Temperature preferably keeps being adjusted in other words constant in entire method, because may minimum temperature fluctuation occur when turnover rate changes by gas flow.
Preferably constantly preferably use hydrogen (H
2) or non-reactive gas reaction chamber is carried out purge.
Schematically show in Fig. 6 by the method that member is cleaned of being used for of the present invention, described member has the crack that oxide is made dirty.
This method is particularly suitable for the be in operation retaining thermoelectric converter 150 of combustion chamber 110 of the assembly that stands strong load such as gas turbine 100 of the spinner blade of gas turbine 100 and turning vane 120,130 and other is cleaned.This method comprises that pre-washing, fluorion clean and this three phases of vacuum annealing.Pre-washing is optionally rather than need forces, and such as being the salt bath cleaning, described pre-washing is used for the oxide compound on surface and other corrosion product are removed or the oxide compound of damaging surface like this and other corrosion product from the surface that member to be cleaned 120,130,155 is arranged, and cleans thereby can improve ensuing fluorion.
After pre-treatment, make member 120,130,155 stand fluorion and clean (FIC).In the process that this in advance known FIC own cleans, member to be cleaned is exposed under the purge gas atmosphere of the temperature that has in the scope that is in 1000 ℃ in the purge chamber.Described purge gas comprises the hydrogen halide of hydrogen fluoride (HF) form, hydrogen fluoride decomposes under the situation that is forming fluorion under the leading temperature, and fluorion is suitable for dissolving the oxide compound that forms in the complicated crack at member under the situation that forms metal fluoride.
The preferred in the method hydrofluoric in other words purge gas of hydrogen halide that comprises 18 volume percentage points to 30 volume percentage point of using, wherein remaining gas are not oxidation and incorrosive gas and especially such as hydrogen oxide compound being played the gas of reductive action.Temperature in the cleaning room is in 980 ℃ to 1100 ℃ especially in 1020 ℃ scope in the FIC cleaning process.
In a plurality of cleaning intervaies to there being member to be cleaned 120,130,155 to load HF/H
2The purge gas of-form of mixtures, the described cleaning interval is by with non-oxide and purge gas that especially play reductive action such as hydrogen (H
2) purge cycle of carrying out interrupts.Can support the purge cycle by the suck purge chamber, then the purge gas in the necessary additional clean chamber before the next cleaning interval.Equally, cleaning is interrupted with gas by suck purge.In shown embodiment, used four cleaning intervaies, this four cleaning intervaies were interrupted by three purge cycles altogether, carried out purge when wherein in the end a cleaning interval finishes equally.But the number in cleaning interval and purge cycle also can be more more significantly.Preferred enforcement three to ten purge cycles.
Load purge gas to member in the cleaning interval, the described cleaning interval continued 10 to 60 minutes respectively and especially continues 45 minutes, and the wherein said cleaning interval can continue the equally long time.Same first and the cleaning politics, economics, organization, and ideology cycle of washing can be more a little longer than middle two cleaning intervaies.But this depends on, in the period 1 temperature at first must in desired scope, be improved and in the end in the one-period temperature must descend again.Preferred enforcement five cleaning intervaies.
Implement solution annealing in last cycle back that FIC cleans and handle, reaction product is such as obtain dissolving mutually as the γ ' that occurs in nickel based super alloy in solution annealing is handled.
Fig. 7 shows exemplary temperature distribution T and pressure distribution p about time t in a chart.To there be member to be cleaned 120,130,155 to send in the purge chamber, and will be transferred to desired scope on the temperature T.At this, be HF/H here with reactant gases 7
2-mixture imports in the purge chamber 10.Carry out four cleaning intervaies in this embodiment, these four cleaning intervaies were interrupted by three purge cycles.Also aspirate described gaseous mixture in cycle at these purges, thus purge in the cycle purge chamber's pressure inside obviously reduce.In addition, gas ratio such as the hydrogen that plays reductive action is imported in the purge chamber.
As beginning has been explained, describedly be particularly suitable for the gas turbine member of being made by the alloy of the chromium content with at least 10 weight percent points is cleaned by method of the present invention.
Fig. 8 exemplarily shows the part longitudinal section of gas turbine 100.
Along rotor 103 successively following inspiration housing 104, compressor 105, such as the combustion chamber 110 of the burner with a plurality of coaxial arrangement 107 of anchor ring shape especially toroidal combustion chamber, turbine 108 and exhaust chest 109.
Described toroidal combustion chamber 110 with communicate such as annular hot gas path 111.Formed turbine 108 such as four stage of turbines of successively arranging 112 there.
Each stage of turbine 112 is such as being made of two blade rings.See in hot gas path 111 along the flow direction of working medium 113, following turning vane group 115 by the spinner blade group 125 that spinner blade 120 constitutes.
Turning vane 130 is fixed on the inner casing 138 of stator 143 at this, and the spinner blade 120 of phase reversion blades group 125 is such as being installed on the rotor 103 by means of turbine wheel dish 133.
On rotor 103, connecting generator or working machine (not shown).
In the operational process of gas turbine 100, compress by inspiration housing 104 suction air 135 and to it by compressor 105.To on the end of the turbine pusher side of compressor 105, provide through the air delivery of overdraft to burner 107, and it is mixed there mutually with incendiary material.Mixture burning in combustion chamber 110 under the situation that forms working medium 113 then.Working medium 113 therefrom along hot gas path 111 from turning vane 130 and the next door of spinner blade 120 flow through.Expand under the situation of transmission pulse at working medium 113 on the spinner blade 120, make that spinner blade 120 drives rotors 103 and this rotor 103 drives the working machine that is coupled to above it again.
Be exposed to member below the working medium 113 of heat in the operational process of gas turbine 100 through affected by hot loading.Except giving the retaining thermoelectric converter of toroidal combustion chamber 110 linings, the turning vane 130 and the spinner blade 120 of first stage of turbine of seeing along the flow direction of working medium 113 112 stand maximum thermal load.
In order to withstand the temperature that exists there, can cool off these turning vanes and spinner blade by means of refrigerant.
Equally, the substrate of described member can have directed structure, that is to say that they are single crystal structure (SX-structure) or the crystal grain (DS-structure) that only has portrait orientation.
As being used for the material that described member is particularly useful for the member of turbine blade 120,130 and combustion chamber 110, such as the superalloy that uses iron-based, Ni-based or cobalt-based.
Such superalloy is open such as obtaining from EP 1 204 776 B1, EP 1 306 454, EP 1 319729 A1, WO 99/67435 or WO 00/44949.
Same described blade 120,130 can have the corrosive of preventing coating (MCrAlX; M is at least a element in the element set that is made of iron (Fe), cobalt (Co), nickel (Ni), and X is active element and represents yttrium (Y) and/or silicon, scandium (Sc) and/or at least a rare earth element hafnium in other words).Such alloy obtains open from EP 0 486 489 B1, EP 0 786 017B1, EP 0 412 397 B1 or EP 1 306 454 A1.
On MCrAlX, can also have thermofin, and this thermofin is such as by ZrO
2, Y
2O
3-ZrO
2Constitute, that is to say that it is either partially or fully stablized by yttrium oxide and/or calcium oxide and/or magnesium oxide.In thermofin, produce shaft-like crystal grain by suitable coating method such as electron beam evaporation (EB-PVD).
Turning vane 130 have towards the turning vane root of the inner casing 138 of turbine 108 (not shown here) and with the opposed turning vane head of described turning vane root.Described turning vane head is towards rotor 103 and be fixed on the set collar 140 of stator 143.
Fig. 9 shows the spinner blade 120 that extends along longitudinal center line 121 of fluid machinery or the skeleton view of turning vane 130.
Described fluid machinery can be gas turbine, steam turbine or the compressor in power station aircraft or that be used to generate electricity.
Blade 120,130 along longitudinal center line 121 successively have everywhere mutually FX 400, with bucket platform 403 and the blade 406 and the blade tip 415 of these FX 400 adjacency.
As turning vane 130, blade 130 can have another platform (not shown) on its blade tip 415.
Formed root of blade 183 in FX 400, this root of blade 183 is used for spinner blade 120,130 is fixed on (not shown) on the axle or the impeller dish.
Described root of blade 183 is such as being configured to tup.Also it is contemplated that other design as Christmas-tree root or dovetail root.
Blade 120,130 has the seamed edge 409 of inflow and flows out seamed edge 412 for a kind of medium that flows through from blade 406 next doors.
For traditional blade 120,130, in the All Ranges 400,403,406 of blade 120,130 such as using especially superalloy of firm metallic substance.
Such superalloy is open such as obtaining from EP 1 204 776 B1, EP 1 306 454, EP 1 319729 A1, WO 99/67435 or WO 00/44949.
Blade 120,130 this can be by castmethod also by means of directional freeze, by forging method, make by the combination of method for milling or these methods.
Have the member of the workpiece of single crystal structure as machine, described member is in operation and stands the load of high machinery, heat and/or chemistry.
The manufacturing of the workpiece of such monocrystalline is carried out such as the directional freeze by liquation.Relate to castmethod at this, metal alloy liquid in castmethod is frozen into single crystal structure, that is to say the workpiece that is frozen into monocrystalline or carries out directional freeze.
At this, dendritic crystal along hot-fluid carry out orientation and or form the bar crystalline substance crystalline-granular texture (cylindricality, that is to say the crystal grain that on the whole length of workpiece, extends, and be called directional freeze according to the current language usage here) or the structure of formation monocrystalline, that is to say that whole work-piece is made of a unique crystal.In these methods, must avoid the transformation of solidifying towards spherical (multicrystal) because will inevitably constitute horizontal and crystal boundary longitudinally by nondirectional growth, described intercrystalline failure the superperformance of member directional freeze or monocrystalline.
If refer to the tissue of directional freeze usually, not only be meant the single crystal that does not have crystal boundary or be up to low-angle boundary so thus, and be meant that perhaps shaft-like crystalline structure, described shaft-like crystalline structure have the crystal boundary that extends along the longitudinal direction, but do not have horizontal crystal boundary.For these second crystalline structure of mentioning, people also refer to the tissue (directionally solidified structures) of directional freeze.
Such method is from US-PS 6,024,792 and EP 0 892 090 A1 in obtain open.
Equally, blade 120,130 can have corrosion of preventing or oxide coating, such as (MCrAlX; M is that X is active element and is representing yttrium (Y) and/or silicon and/or at least a rare earth element hafnium (Hf) in other words by at least a element in the element set of iron (Fe), cobalt (Co), nickel (Ni) formation).Such alloy obtains open from EP 0 486 489 B1, EP 0 786 017 B1, EP 0 412 397 B1 or EP 1 306 454 A1.
Density is preferably 95% of theoretical density.
Go up the alumina layer (TGO=thermal grown oxide layer) that forms protectiveness at MCrAlX layer (as the middle layer or as outmost layer).
Layer moiety preferably has Co-30Ni-28Cr-8Al-0.6Y-0.7Si or Co-28Ni-24Cr-10Al-0.6Y.Except the protective layer of these cobalt-baseds, Ni-based protective layer such as Ni-10Cr-12Al-0.6Y-3Re or Ni-12Co-21Cr-11Al-0.4Y-2Re or the Ni-25Co-17Cr-10Al-0.4Y-1.5Re of also preferred use.
On MCrAlX, can also there be thermofin, the preferably outmost layer of this thermofin, and such as by ZrO
2, Y
2O
3-ZrO
2Constitute, that is to say that it is either partially or fully stablized by yttrium oxide and/or calcium oxide and/or magnesium oxide.
This thermofin covers whole M CrAlX layer.In thermofin, produce shaft-like crystal grain by suitable coating method such as electron beam evaporation (EB-PVD).
Also it is contemplated that other coating method, such as atmospheric plasma spray coating (APS), LPPS, VPS or CVD.The crystal grain that described thermofin can have porous, have micro crack or have a macroscopic fracture is used to obtain better heatproof degree sudden change stability.Therefore described thermofin is preferably than MCrAlX layer porous more.
Reprocessing (Refurbishment) means that member 120,130 may be removed protective layer (such as by sandblast) after it uses.Then remove corrosion layer and/or zone of oxidation corrosion product and/or oxidation products in other words.Yet to repair in case of necessity the crack in the member 120,130.Then member 120,130 is applied and reuses member 120,130 again.
Blade 120,130 can be configured to hollow structure or be configured to solid construction.If blade 120,130 is cooled off, it is hollow and also has film-cooling hole 418 (being shown in broken lines) in case of necessity so.
Figure 10 shows the combustion chamber 110 of gas turbine.This combustion chamber 110 is such as being configured to so-called toroidal combustion chamber, and a large amount of burners of along the circumferential direction arranging round rotation 102 107 import in the common burning chamber 154 in this toroidal combustion chamber, and described burner 107 produces flame 156.For this reason, combustion chamber 110 is configured to the annular structure generally at it, and this structure is located round rotation 102.
For obtaining than higher efficient, combustion chamber 110 is designed for higher about 1000 ℃ to 1600 ℃ temperature of working medium M.In order to realize long work-ing life also that under the situation of these disadvantageous working parameters concerning material combustion chamber wall 153 is provided with the liner that is made of retaining thermoelectric converter 155 in its side towards working medium M.
Each retaining thermoelectric converter 155 of being made by alloy is provided with heat-stable especially protective layer (MCrAlX layer and/or ceramic coating) or is made by resistant to elevated temperatures material (firm ceramic stone) in the working medium side.
These protective layers can be similar to turbine blade; that is to say such as meaning that MCrAlX:M is that X is active element and is representing yttrium (Y) and/or silicon and/or at least a rare earth element hafnium (Hf) in other words by at least a element in the element set of iron (Fe), cobalt (Co), nickel (Ni) formation.Such alloy obtains open from EP 0 486 489 B1, EP 0,786 017 B1, EP 0 412 397 B1 or EP 1 306 454 A1.
On MCrAlX, can also have thermofin, and this thermofin is such as by ZrO such as pottery
2, Y
2O
3-ZrO
2Constitute, that is to say that it is either partially or fully stablized by yttrium oxide and/or calcium oxide and/or magnesium oxide.
In thermofin, produce shaft-like crystal grain by suitable coating method such as electron beam evaporation (EB-PVD).
Also it is contemplated that other coating method, such as atmospheric plasma spray coating (APS), LPPS, VPS or CVD.The crystal grain that described thermofin can have porous, have micro crack or have a macroscopic fracture is used to obtain better heatproof degree sudden change stability.
Reprocessing (Refurbishment) means that retaining thermoelectric converter 155 may be removed protective layer (such as by sandblast) after it uses.Then remove corrosion layer and/or zone of oxidation corrosion product and/or oxidation products in other words.Yet to repair in case of necessity the crack in the retaining thermoelectric converter 155.Then retaining thermoelectric converter 155 is applied and reuses retaining thermoelectric converter 155 again.
In addition, because the high temperature of 110 inside, combustion chamber can be provided with cooling system for its holding element in other words for retaining thermoelectric converter 155.Described retaining thermoelectric converter 155 is then such as being hollow and also having the cooling hole (not shown) that imports in the burning chamber 154 in case of necessity.
Claims (42)
1.FIC equipment (1),
This FIC equipment (1) member (4,120,130,155) can be contained in the reaction chamber (10) and
By means of reactant gases or reaction gas mixtures oxidation products and/or corrosion product are removed from described member (4,120,130,155),
This FIC equipment has device (13),
Described device (13) has been realized regulating the pressure (p) of reactant gases in the reaction chamber (10) of FIC equipment (1) or reaction gas mixtures greater than normal atmosphere (p
At).
2. press the described FIC equipment of claim 1 (1),
This FIC equipment (1) has pump as device (13),
This pump can be with reactant gases or reaction gas mixtures at overvoltage region (＞p
At) in pump in the reaction chamber (10).
3. press claim 1 or 2 described FIC equipment (1),
This FIC equipment (1) has the overvoltage sealing member as device (13) on reaction chamber (10).
4. press claim 1,2 or 3 described FIC equipment (1),
This FIC equipment (1) has been realized the ratio normal atmosphere (p of reactant gases or reaction gas mixtures in inside
At) big especially until the pressure (p) of 140kPa.
5. press claim 1,2,3 or 4 described FIC equipment (1),
This FIC equipment (1) has been realized 1.4bar (=140kPa) the pressure (p) of reactant gases or reaction gas mixtures in inside.
6. press claim 1,2,3,4 or 5 described FIC equipment,
This FIC equipment has valve (13),
This valve (13) can separate the container of reaction gas mixtures or reactant gases with reaction chamber (10).
7. be used for member (4,120,130,155) is carried out the method that FIC cleans,
Wherein, will be especially at least temporarily regulate greater than normal atmosphere (p by the reactant gases in the reaction chamber (10) of or multinomial described FIC equipment (1) in the aforementioned claim 1 to 6 or the pressure (p) of reaction gas mixtures
At).
8. press the described method of claim 7,
Wherein, the pressure (p) in the described reaction chamber (10) at least temporarily is in greater than normal atmosphere (p
At) pressure and 1.4bar (=140kPa) between, especially be 140kPa.
9. press claim 7 or 8 described methods,
Wherein, periodically reduce and improve again pressure (p) in the described reaction chamber (10).
10. press claim 7,8 or 9 described methods,
Wherein, the pressure (p) in the described reaction chamber (10) at least temporarily is constant,
Wherein especially the hold-time is at least 4 minutes to 10 minutes.
11. by claim 7,8,9 or 10 described methods,
Wherein, the pressure (p) in the described reaction chamber (10) especially at least temporarily is lower than normal atmosphere (p in 5 minutes to 10 minutes time
At).
12. by claim 7,8,9 or 10 described methods,
Wherein, the pressure (p) in the described reaction chamber (10) especially at least temporarily is equivalent to normal atmosphere (p at least 25 minutes to 65 minutes time
At), especially greater than normal atmosphere (p
At).
13. by one or multinomial described method in the aforementioned claim 7 to 12,
Wherein, high pressure phase (P
H) at time length (t
h) lining has than at periods of low pressure (P
N) in high pressure (P
H＞P
N), and
Wherein, at high pressure phase (P
H) in (t at most temporarily
s, t
s＜t
h) coming purge reaction chamber (10) with reactant gases or with reaction gas mixtures, this is crack wash phase (S4).
14. by one or multinomial described method in the aforementioned claim 7 to 12,
Wherein, high pressure phase (P
H) at time length (t
h) lining has than at periods of low pressure (P
N) in high pressure (P
H＞P
N), and
Wherein, at high pressure phase (P
H) at time length (t
h) in come purge reaction chamber (10) with reactant gases or with reaction gas mixtures, this is crack wash phase (S4).
15. by claim 7,8,9,10,11,12 or 13 described methods,
Wherein, at high pressure phase (P
H) at time length (t
h-t
s＞0) purge is only come with nonreactive gas in the lining, and this is crack purge stage (S5).
16. by claim 1,13 or 15 described methods,
Wherein, if the turnover rate of reaction gas mixtures or reactant gases is greater than 0, so especially at high pressure phase (P
H) the middle turnover rate that changes the turnover rate of nonreactive gas and especially between two numerical value, change, especially reduce nonreactive gas.
17. by claim 7,9,10,11 or 16 described methods,
Wherein, with pressure at normal atmosphere (p
At) below be reduced to (P
N), and
Wherein, only come purge with nonreactive gas, this is reaction chamber purge stage (S3).
18. by each described method in the aforementioned claim,
Wherein, by especially having the pressure (P of regulation
H) reactant gases or the existence of reaction gas mixtures determine crack wash phase (S4),
Wherein, by reactant gases or reaction gas mixtures lack and than low pressure (P in the reaction chamber purge stage (S3)
N) (P
N＜P
H) determine the reaction chamber purge stage (S3), and wherein, repeatedly use reactant gases or reaction gas mixtures,
Stage (S4, S5) was interrupted by the reaction chamber purge stage (S3),
Wherein, in the crack purge stage (S5), load nonreactive gas to the crack.
19. by the described method of claim 18,
Wherein, the described stage (S4, S5, S3) directly successively accompanies as one-period.
20. by claim 18 or 19 described methods,
Wherein, implement three to ten cycles, especially implement five cycles.
21. by each described method in the claim 18 to 20,
Wherein, crack wash phase (S4) continues 10 minutes to 60 minutes, especially lasting 45 minutes.
22. by each described method in the claim 18 to 21,
Wherein, described crack wash phase (S4) is equally long.
23. by each described method in the claim 18 to 22,
Wherein, the described reaction chamber purge stage (S3) continues 2 minutes to 10 minutes, especially lasting 5 minutes.
24. by each described method in the claim 18 to 23,
Wherein, (S5) following last wash phase the crack purge stage.
25. by each described method in the claim 18 to 23,
Wherein, in the different stage (S3, S4, S5), purge chamber (10) are aspirated.
26. by each described method in the claim 15,17 or 18,
Wherein, the gas that has used reductive action as nonreactive gas hydrogen especially.
27. by each described method in the aforementioned claim,
Wherein, in reaction chamber (10), carry out in a vacuum member (4,120,130,155) being annealed after the clean.
28. by one or multinomial described method in the aforementioned claim,
Wherein, the temperature (T) in the described reaction chamber (10) keeps constant except heating when method begins and the cooling when method finishes.
29. by one or multinomial described method in the aforementioned claim,
Wherein, constantly use especially hydrogen (H of purge gas, nonreactive gas
2) come purge reaction chamber (10).
30. by one or multinomial described method in the aforementioned claim,
Wherein, constantly aspirate reaction chamber (10).
31. by one or multinomial described method in the aforementioned claim,
Wherein, use reaction gas mixtures, this reaction gas mixtures comprises the hydrogen halide of 18 volume percentage points to 30 volume percentage point.
32. by each described method in the aforementioned claim,
Wherein, be 980 ℃ to 1100 ℃ in temperature and especially when temperature is 1020 ℃, load reaction gas mixtures or reactant gases to the crack of member.
33. by one or multinomial described method in the aforementioned claim,
Wherein, use surpasses 1000 ℃ temperature.
34. by the described method of claim 27,
Wherein, anneal in the γ '-solution annealing temperature of the material that is used for member (4,120,130,155).
35. by each described method in the claim 27 or 34,
Wherein, the annealing of carrying out in annealing temperature continues at least two hours.
36. by each described method in the aforementioned claim,
Wherein, in reaction gas chamber (10), member (4,120,130,155) is carried out pre-washing to member (4,120,130,155) before handling in salt bath.
37. by each described method in the aforementioned claim,
Wherein, the member of being made by the alloy of the chromium content that especially has at least 10 weight percent points that contains chromium (4,120,130,155) is cleaned.
38. by the described method of claim 37,
Wherein, the member of being made by the casting alloy of directional freeze especially superalloy (4,120,130,155) is cleaned.
39. by each described method in the aforementioned claim,
Wherein, at high pressure phase (P
H) at time length (t
h-t
s) lining uses the gas of reductibility after using reaction gas mixtures when high pressure phase finishes.
40. by each described method in the aforementioned claim,
Wherein, at whole high pressure phase (P
H) middle reactant gases or the reaction gas mixtures of using.
41. by the described method of claim 31,
Wherein, hydrogen halide exists with the form of hydrogen fluoride (HF).
42. by each described method in the aforementioned claim,
Wherein, described reactant gases has by hydrogen halide and plays the gas of reductive action or the nonreactive gas mixture that constitutes of hydrogen especially, especially is made of this mixture.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2007/008824 WO2009049637A1 (en) | 2007-10-10 | 2007-10-10 | Fic installation and method for operating a fic installation in the pressure range above atmospheric pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101821430A true CN101821430A (en) | 2010-09-01 |
| CN101821430B CN101821430B (en) | 2012-10-10 |
Family
ID=39469587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007801010475A Expired - Fee Related CN101821430B (en) | 2007-10-10 | 2007-10-10 | Method for fluorine-ion clearing for components |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20100218787A1 (en) |
| EP (1) | EP2198073A1 (en) |
| CN (1) | CN101821430B (en) |
| WO (1) | WO2009049637A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785647A (en) * | 2012-10-26 | 2014-05-14 | 上海华虹宏力半导体制造有限公司 | Method for improving service life of parts through ion chamber automatic cleaning through ion injection device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2584069A1 (en) | 2011-10-21 | 2013-04-24 | Siemens Aktiengesellschaft | Pre-treatment for fluoride-ion cleaning and method |
| GB2511563B (en) * | 2013-03-08 | 2015-06-24 | Rolls Royce Plc | A combustion chamber heat shield and seal assembly and a method of manufacturing a combustion chamber heat shield and seal assembly |
| DE102013009843B4 (en) * | 2013-06-12 | 2022-09-15 | Arianegroup Gmbh | Process for cleaning turbine blades |
| EP3006602B1 (en) | 2014-10-09 | 2017-04-12 | Airbus DS GmbH | Method for cleaning turbine blades |
| US9689076B2 (en) | 2014-10-10 | 2017-06-27 | Airbus Ds Gmbh | Method of cleaning turbine blades |
| US9850161B2 (en) | 2016-03-29 | 2017-12-26 | Applied Materials, Inc. | Fluoride glazes from fluorine ion treatment |
| FR3088346A1 (en) * | 2018-11-14 | 2020-05-15 | Safran Aircraft Engines | PROCESS FOR STRIPPING A TURBOMACHINE PART |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4324594A (en) * | 1978-02-02 | 1982-04-13 | University Of Dayton | Method for cleaning metal parts |
| EP0209307B1 (en) * | 1985-07-15 | 1988-09-07 | The Secretary of State for Defence in Her Britannic Majesty's Government of the United Kingdom of Great Britain and | Cleaning of metal articles |
| US4889589A (en) * | 1986-06-26 | 1989-12-26 | United Technologies Corporation | Gaseous removal of ceramic coatings |
| EP0861927A1 (en) * | 1997-02-24 | 1998-09-02 | Sulzer Innotec Ag | Method for manufacturing single crystal structures |
| DE102005051310A1 (en) * | 2005-10-26 | 2007-05-03 | Siemens Ag | Cleaning of oxidized or corroded components |
-
2007
- 2007-10-10 WO PCT/EP2007/008824 patent/WO2009049637A1/en active Application Filing
- 2007-10-10 CN CN2007801010475A patent/CN101821430B/en not_active Expired - Fee Related
- 2007-10-10 US US12/681,665 patent/US20100218787A1/en not_active Abandoned
- 2007-10-10 EP EP07818895A patent/EP2198073A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785647A (en) * | 2012-10-26 | 2014-05-14 | 上海华虹宏力半导体制造有限公司 | Method for improving service life of parts through ion chamber automatic cleaning through ion injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20100218787A1 (en) | 2010-09-02 |
| CN101821430B (en) | 2012-10-10 |
| EP2198073A1 (en) | 2010-06-23 |
| WO2009049637A1 (en) | 2009-04-23 |
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