CN1318686A - Method for manufacturing stator baffle in steam turbine and produced stator baffle - Google Patents
Method for manufacturing stator baffle in steam turbine and produced stator baffle Download PDFInfo
- Publication number
- CN1318686A CN1318686A CN01119661A CN01119661A CN1318686A CN 1318686 A CN1318686 A CN 1318686A CN 01119661 A CN01119661 A CN 01119661A CN 01119661 A CN01119661 A CN 01119661A CN 1318686 A CN1318686 A CN 1318686A
- Authority
- CN
- China
- Prior art keywords
- cavity
- steam turbine
- dividing plate
- blade
- stator
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 239000000463 material Substances 0.000 claims abstract description 14
- 238000005219 brazing Methods 0.000 claims abstract description 11
- 235000011837 pasties Nutrition 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000003754 machining Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000003698 laser cutting Methods 0.000 claims description 2
- 238000005476 soldering Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 241000208202 Linaceae Species 0.000 description 1
- 235000004431 Linum usitatissimum Nutrition 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- 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
- F01D9/00—Stators
- F01D9/02—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles
- F01D9/04—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector
- F01D9/042—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators
- F01D9/044—Nozzles; Nozzle boxes; Stator blades; Guide conduits, e.g. individual nozzles forming ring or sector fixing blades to stators permanently, e.g. by welding, brazing, casting or the like
-
- 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
- F05D2230/00—Manufacture
- F05D2230/10—Manufacture by removing material
- F05D2230/13—Manufacture by removing material using lasers
-
- 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
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/22—Manufacture essentially without removing material by sintering
-
- 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
- F05D2230/00—Manufacture
- F05D2230/20—Manufacture essentially without removing material
- F05D2230/23—Manufacture essentially without removing material by permanently joining parts together
-
- 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
- F05D2240/00—Components
- F05D2240/10—Stators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Diaphragms And Bellows (AREA)
- Welding Or Cutting Using Electron Beams (AREA)
Abstract
A process for producing a stator diaphragm (10) in a steam turbine or gas expander, which provides a preparation phase of two rings (12, 13), machined separately to obtain radial slots (15, 15') having the profile of the blades (11) of a stator stage of the steam turbine or of the gas expander and suitable for the subsequent housing of the blades (11), in which an appropriate quantity of brazing material (14, 14'), in the form of paste, is inserted into the cavities (15, 15') and the diaphragm (10) is subjected to a furnace brazing operation in vacuo. The invention further relates to a stator diaphragm (10) for steam turbine or gas expander.
Description
The present invention relates to a kind of method of making the stator dividing plate in steam turbine or the gas expander.
The invention still further relates to the stator dividing plate in a kind of steam turbine or the gas expander.
As everyone knows, steam turbine is by means of steam, generally is water vapor work, and carries out transformation of energy in the inflation process of gas of steam or compression in advance, obtains mechanical energy.
Particularly, in such machine, overheated or saturated in advance steam, or pressurized gas is by expanding through several stator and stages to arranged alternate in turbine.
Stage and engine shaft one, they pass to engine shaft with whole torques, and stator stage is used for providing steam or gas stream with suitable condition for it at the inlet of rotor blade.
Stator is made of one group of stator vane, each between, a respective nozzles is set.
All stator vanes in the one-level all are to be fixed on the housing of turbine engine, on the suitable fixed component of center fixation to, are referred to as end cap usually.
The stationary part of the steam turbine of construction and installation known structure or gas expander is based on following steps in the prior art.
At first, be cut to certain size from a stretch (drawn bar) and obtain blade, then process the end to form a link that is connected with housing and a fixing pin of end cap.
More properly, housing has a C shape chamber, and blade is along circumference portion within it.
Spacing between the blade guarantees by a spacing leading edge (heel), it and the identical end processing of blade experience on being used for fixing housing.
Therefore blade and leading edge alternately are installed in the groove on the housing of turbine engine.
Then one ring with holes is installed, on ring, is guaranteed that fixedly it fixes by the pin of blade at the other end of blade.
Yet, it should be noted that the installation of above-mentioned stator stage needs considerable artificial technology's work, so the installation time is long, and installation quality depends on operator's profile.
And though this manufacture method confirms it is feasible through the several years, it can not adapt to the requirement that time and production process repeatability are built in shortening under the market competition condition now.
Be pointed out that also that at last when needs were changed parts, the dismounting of such stator stage also needed the considerable time, because it has related to a large amount of component.
Therefore the purpose of this invention is to provide a kind of method of making the stator dividing plate in steam turbine or the gas expander, it can shorten manufacturing and installation time, and reduces corresponding processing work, therefore has sizable economic advantages.
Another object of the present invention provides the method for the stator dividing plate in a kind of construction and hard soldering steam turbine or the gas expander, and it can reduce foozle significantly.
A further object of the invention provides the method for the stator dividing plate in a kind of construction and hard soldering steam turbine or the gas expander, and it can make maintenance subsequently and change operation and simplify significantly.
These and other objects of the present invention all reach by a kind of method of making the stator dividing plate in steam turbine or the gas expander, it is characterized by the preparatory stage that the invention provides two rings, process individually to obtain radial cavities, this radial cavities has the profile of blade of the stator stage of above-mentioned steam turbine or gas expander, and be applicable to the installation subsequently of above-mentioned blade, wherein the braze material of an appropriate amount is injected in the above-mentioned cavity with the pasty state form, and described dividing plate will be through a vacuum melting furnace brazing operation.
According to a most preferred embodiment of the present invention, the preparatory stage of ring finishes by utilizing water injection cutting to process ring individually, and to obtain having the radial cavities of blade profile, all these are all realized by means of the numerical control machine machining tool.
According to another embodiment of the present invention, the preparatory stage of the cavity of ring is by being reached by the laser cutting cavity.
Another kind of form is that the preparatory stage of the cavity of ring is by being reached by electron discharge processing cutting cavity.
According to an embodiment more of the present invention, the brazing material of pasty state is injected in the cavity with blade profile.In subsequently in a vacuum the smelting furnace brazing operation promotion brazing material infiltration blade profile and the gap between the described cavity.
According to another embodiment of the present invention, after the welding operation of dividing plate, process dividing plate, and be cut into two semi-rings, so that attach it at last in the housing of described steam turbine or gas expander by electron discharge processing according to its final size.
The invention still further relates to the stator dividing plate of a kind of steam turbine or gas expander, it is characterized by it and comprise two rings, processing is to obtain having the radial cavities of blade profile separately, this cavity is applicable to installs described blade subsequently, and wherein the brazing material of an appropriate amount is injected in the described cavity with the pasty state form.
Further feature of the present invention is limited in the claim of present patent application.
Description by the following non-limiting examples that provides at accompanying drawing can more be clear that other purpose of the present invention and advantage, and accompanying drawing comprises:
Fig. 1 is a schematic front elevation, and broken section wherein shows the I-I face among Fig. 2, with the stator vane in one group of stator vane that a stator dividing plate is associated, fixes according to the inventive method;
Fig. 2 schematically shows stator vane shown in Figure 1, and broken section wherein is the II-II face among Fig. 1; With
Fig. 3 schematically shows the chamber of a stator vane of filling with braze material along the A direction among Fig. 1.
In above accompanying drawing, comprise that the device integral body of stator dividing plate and blade fixed thereon is represented with numeral 10.
In fact, in processing method of the present invention, the two ends of each blade 11 are fixing by two rings 12 and 14, to form a dividing plate 10.
Particularly, first end of each blade 11 is fixed in one and encircles on 12, and the other end is fixed on the outer shroud 13.
The dividing plate 10 of Xing Chenging then is installed in the housing of steam turbine or gas expander thus, has made a cavity with rectangular cross section within it in advance.
Resulting dividing plate 10 has two rings 12 and 13, and these two rings are preferably cast, and water sprays cutting working method and processes separately.
With the method, process radial groove with blade 11 profiles, be used for subsequently within it described blade installation.
Utilize a numerical control machine machining tool to carry out cutting.
In version of the present invention, working angles can or utilize electron discharge to process and realize by laser.
The processing that blade 11 is normally finished to the preliminary dimension conduct through cutting in advance by a stretch does not have the upper chambers that is used to be fixed on the housing but be not processed into, and therefore the pin at the other end also no longer occurs.
The braze material 14 of pasty state, 14 ' is injected cavity 15,15 ', and enters in the gap between the cavity 15,15 ' of blade 11 profiles and outer shroud 13 and interior ring 12.
Carry out hard soldering with control under the temperature in a smelting furnace under vacuum state, other operating parameter is listed according to following.
The fixing of blade 11 realized by make a little bead (only on the inboard of ring) with welding consumables, to guarantee its position stability in operation subsequently.
A kind of flax strap of auxiliary bonding is covered on the outer and inner diameter of ring, is used for the injection of pasty state braze material.
Then pasty state braze material 14, the 14 ' both sides from interior ring 12 and outer shroud 13 diameters are sprayed in the cavity 15,15 ' on the ring, must be noted that the control jet pressure so that pasty state braze material 14,14 ' can arrive each corner in the face of the edge of the groove of steam flow channel.
The hard soldering of carrying out in the smelting furnace of vacuum, its operation pressure is less than 5 * 10
-3TORR.
After the soldering, dividing plate 10 is processed according to final size, then adopts electron discharge processing to be cut into two semi-rings with wire or laser.
Therefore it only is that two semi-rings are installed that last assembling in housing reduces to.
From given description, can clearly be seen that the feature and the advantage of the method for the stator dividing plate in the manufacturing steam turbine of the present invention.
Following description is intended to more clearly set forth these advantages.
Above-described the present invention can be implemented in two rings are installed in the single dividing plate, and stator vane is welded into a whole with it in these two rings.
This solution has reduced employed component, when needs are changed dividing plate 10, makes and changes operation simplification significantly.
In fact, what a considerable aspect of stator dividing plate 10 of the present invention was that the present invention needs operational processes only is two parts, promptly goes up semi-ring and following semi-ring, has replaced all blades 11 of this system in the prior art.
This means last assembling and may need anyly once change the needed time of component and can shorten widely, so just can shorten dead time, and then the saving cost of overhaul.
And, having benefited from the automation of manufacture process and got rid of manual operation, the structural strength of dividing plate has increased, and manufacturing tolerances also has been lowered.
Water sprays the cutting that cutting technology, particularly CNC processing technology have been applied to groove, can realize that the mean gap on the profile of blade 11 is 0.05-0.2mm, has guaranteed Economics of Processing and accuracy.
Obviously, under the prerequisite of creative principle, the manufacture method of steam turbine stator dividing plate of the present invention can have multiple version not departing from novelty of the present invention.
What can expect at last is in practical application of the present invention, and the material of described component, form and size can be arbitrary kind as required, and they can be from technical standpoint replacing with other suitable therewith kind.
Claims (9)
1. be used for making the method for the stator dividing plate (10) of steam turbine or gas expander, it is characterized in that it provides two rings (12,13) preparatory stage, process individually to obtain radial cavities (15,15 '), this radial cavities (15,15 ') has the profile of the blade (11) of the stator stage of described steam turbine or gas expander, and be applicable to the installation subsequently of described blade (11), the braze material (14 of an appropriate amount wherein, 14 ') inject in the described cavity (15,15 ') with the pasty state form, and described dividing plate (10) will be through the smelting furnace brazing operation under the vacuum state.
2. the method for claim 1, it is characterized in that described ring (12,13) preparatory stage is by means of the numerical control machine machining tool, process described two rings (12 individually by utilizing water to spray cutting, 13) finish, described radial cavities (15,15 ') with (11) profile that obtains having blade.
3. the method for claim 1 is characterized in that the preparatory stage of the cavity (15,15 ') of described ring (12,13) passes through to be reached by the described cavity of laser cutting (15,15 ').
4. the method for claim 1 is characterized in that the preparatory stage of the cavity (15,15 ') of described ring (12,13) reaches by cutting described cavity (15,15 ') by electron discharge processing.
5. the method for claim 1 is characterized in that the brazing material (14,14 ') of described pasty state is injected into described cavity (15,15 ') in, and enter in the gap between the cavity (15,15 ') of the profile of described blade (11) and described ring (12,13).
6. as the above-mentioned described method of each claim, it is characterized in that after welding operation, process described dividing plate (10) according to final size, and be cut into two semi-rings by electron discharge processing or laser, so that attach it at last in the inner shell of described steam turbine or gas expander.
7. as the above-mentioned described method of each claim, it is characterized in that described brazing operation carries out in a smelting furnace under vacuum.
8. the stator dividing plate (10) that is used for steam turbine, it is characterized in that it comprises two rings (12,13), separately processing is with the radial cavities (15 of (11) profile that obtains having blade, 15 '), this cavity is applicable to installs described blade (11) subsequently, wherein the brazing material (14 of an appropriate amount, 14 ') be injected in the described cavity (15,15 ') with the pasty state form.
As described in the accompanying drawing and being used to of illustrating build and weld the method and the dividing plate of production thus of the stator dividing plate of steam turbine or gas expander.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITMI2000A000870 | 2000-04-18 | ||
| IT2000MI000870A IT1317277B1 (en) | 2000-04-18 | 2000-04-18 | PROCEDURE FOR THE REALIZATION OF A STATIC DIAPHRAGM IN A STEAM UNATURBINE AND STATIC DIAPHRAGM SO REALIZED. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1318686A true CN1318686A (en) | 2001-10-24 |
| CN1316142C CN1316142C (en) | 2007-05-16 |
Family
ID=11444884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011196610A Expired - Lifetime CN1316142C (en) | 2000-04-18 | 2001-04-18 | Method for manufacturing stator baffle in steam turbine and produced stator baffle |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1148208B1 (en) |
| JP (1) | JP2002038904A (en) |
| KR (1) | KR100602283B1 (en) |
| CN (1) | CN1316142C (en) |
| CZ (1) | CZ299431B6 (en) |
| DE (1) | DE60120549T2 (en) |
| IT (1) | IT1317277B1 (en) |
| RU (1) | RU2268371C2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454028A (en) * | 2014-11-14 | 2015-03-25 | 东方电气集团东方汽轮机有限公司 | Method for improving running efficiency of steam turbine generator unit in heat supply season |
| CN109989791A (en) * | 2019-04-03 | 2019-07-09 | 大唐东营发电有限公司 | A kind of turbine rotor cooling system |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9815809D0 (en) | 1998-07-22 | 1998-09-16 | Appleton Robert P | Casing running tool |
| US6800829B1 (en) * | 2003-05-29 | 2004-10-05 | General Electric Company | Method and apparatus for repairing air-cooled airfoils |
| FR2860740B1 (en) * | 2003-10-10 | 2007-03-02 | Snecma Moteurs | METHOD FOR BRAZING A TURBOMACHINE COMPRESSOR RECTIFIER |
| US7303112B2 (en) | 2004-10-29 | 2007-12-04 | United Technologies Corporation | Repair of braze joint and article repaired |
| GB2436597A (en) | 2006-03-27 | 2007-10-03 | Alstom Technology Ltd | Turbine blade and diaphragm |
| DE102008052602A1 (en) * | 2008-10-21 | 2010-04-22 | Siemens Aktiengesellschaft | Swirler useful in burner of gas turbine, comprises blade having inlet openings, inner supply tube that supplies fuel to the openings and distributor feed that supplies fuel to blade, where the openings are produced by spark-erosion machine |
| ITCO20120014A1 (en) * | 2012-04-06 | 2013-10-07 | Nuovo Pignone Srl | DIAPHRAGM RING OF STATHY STAKE, STEAM TURBINE AND METHOD |
| DE102016209210A1 (en) * | 2016-05-27 | 2017-12-14 | Schaeffler Technologies AG & Co. KG | Hydrodynamic torque converter |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1304001A (en) * | 1969-02-10 | 1973-01-24 | ||
| US3909157A (en) * | 1972-01-27 | 1975-09-30 | Chromalloy American Corp | Turbine nozzle-vane construction |
| JPS5322141A (en) * | 1976-08-13 | 1978-03-01 | Kawasaki Steel Co | Backing strap for oneeside welding |
| US4509238A (en) * | 1983-03-21 | 1985-04-09 | General Electric Company | Method for fabricating a steam turbine diaphragm |
| DE4023912A1 (en) * | 1990-07-27 | 1992-01-30 | Zbigniew Pagacz | Rim star prodn. method - is for light alloy vehicle wheel and involves use of NC water jet |
| DE9207017U1 (en) * | 1992-05-23 | 1992-09-03 | Abb Patent Gmbh, 6800 Mannheim, De | |
| JP3218800B2 (en) * | 1993-05-31 | 2001-10-15 | 石川島播磨重工業株式会社 | How to assemble turbine vanes |
| US5332360A (en) * | 1993-09-08 | 1994-07-26 | General Electric Company | Stator vane having reinforced braze joint |
| JPH08141737A (en) * | 1994-11-11 | 1996-06-04 | Ogasawara Yoshihiro | Method for welding steel plate or frame |
| JPH08170502A (en) * | 1994-12-12 | 1996-07-02 | Mitsubishi Heavy Ind Ltd | Gas turbine stationary blade |
| US5732468A (en) * | 1996-12-05 | 1998-03-31 | General Electric Company | Method for bonding a turbine engine vane segment |
| JP3559152B2 (en) * | 1997-10-13 | 2004-08-25 | 新潟原動機株式会社 | Turbomachine stationary vane and method of assembling the same |
| DE19813958C1 (en) * | 1998-03-28 | 1999-11-25 | Mtu Muenchen Gmbh | Method for producing a built guide ring of a gas turbine, in particular an aircraft engine, and a guide ring produced according to the method |
-
2000
- 2000-04-18 IT IT2000MI000870A patent/IT1317277B1/en active
-
2001
- 2001-04-12 DE DE60120549T patent/DE60120549T2/en not_active Expired - Lifetime
- 2001-04-12 EP EP01303458A patent/EP1148208B1/en not_active Expired - Lifetime
- 2001-04-13 KR KR1020010019823A patent/KR100602283B1/en active IP Right Grant
- 2001-04-17 CZ CZ20011372A patent/CZ299431B6/en not_active IP Right Cessation
- 2001-04-17 JP JP2001117568A patent/JP2002038904A/en active Pending
- 2001-04-18 RU RU2001110911/06A patent/RU2268371C2/en active
- 2001-04-18 CN CNB011196610A patent/CN1316142C/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454028A (en) * | 2014-11-14 | 2015-03-25 | 东方电气集团东方汽轮机有限公司 | Method for improving running efficiency of steam turbine generator unit in heat supply season |
| CN109989791A (en) * | 2019-04-03 | 2019-07-09 | 大唐东营发电有限公司 | A kind of turbine rotor cooling system |
| CN109989791B (en) * | 2019-04-03 | 2021-11-26 | 大唐东营发电有限公司 | Steam turbine rotor cooling system |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1148208B1 (en) | 2006-06-14 |
| ITMI20000870A0 (en) | 2000-04-18 |
| ITMI20000870A1 (en) | 2001-10-18 |
| EP1148208A2 (en) | 2001-10-24 |
| RU2268371C2 (en) | 2006-01-20 |
| CZ299431B6 (en) | 2008-07-23 |
| EP1148208A3 (en) | 2004-06-02 |
| JP2002038904A (en) | 2002-02-06 |
| CN1316142C (en) | 2007-05-16 |
| CZ20011372A3 (en) | 2001-12-12 |
| KR20010098577A (en) | 2001-11-08 |
| KR100602283B1 (en) | 2006-07-14 |
| IT1317277B1 (en) | 2003-05-27 |
| DE60120549T2 (en) | 2007-06-06 |
| DE60120549D1 (en) | 2006-07-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070516 |
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