EP0839261B1 - Gussgehäuse für einen abgasstutzen einer strömungsmaschine, insbesondere einer dampfturbine - Google Patents

Gussgehäuse für einen abgasstutzen einer strömungsmaschine, insbesondere einer dampfturbine Download PDF

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Publication number
EP0839261B1
EP0839261B1 EP96922755A EP96922755A EP0839261B1 EP 0839261 B1 EP0839261 B1 EP 0839261B1 EP 96922755 A EP96922755 A EP 96922755A EP 96922755 A EP96922755 A EP 96922755A EP 0839261 B1 EP0839261 B1 EP 0839261B1
Authority
EP
European Patent Office
Prior art keywords
construction member
bearing
supporting
cast
pipe
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.)
Expired - Lifetime
Application number
EP96922755A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0839261A1 (de
Inventor
Heinrich Oeynhausen
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
Publication of EP0839261A1 publication Critical patent/EP0839261A1/de
Application granted granted Critical
Publication of EP0839261B1 publication Critical patent/EP0839261B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/30—Exhaust heads, chambers, or the like
    • 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
    • F01D9/06—Fluid supply conduits to nozzles or the like
    • 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
    • F01D25/16—Arrangement of bearings; Supporting or mounting bearings in casings
    • F01D25/162—Bearing supports
    • 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
    • F01D9/06—Fluid supply conduits to nozzles or the like
    • F01D9/065—Fluid supply or removal conduits traversing the working fluid flow, e.g. for lubrication-, cooling-, or sealing fluids
    • 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
    • F05D2300/11—Iron
    • F05D2300/111—Cast iron

Definitions

  • the invention relates to a component for an exhaust pipe Turbomachine and one arranged in the exhaust pipe Turbomachine bearing.
  • the invention relates in particular to an exhaust pipe to connect a steam turbine, the steam, which as Fluid is used until relaxed until condensation a capacitor.
  • a steam turbine which as Fluid is used until relaxed until condensation a capacitor.
  • one Exhaust nozzle which the steam flowing out of the steam turbine in leads essentially straight to the capacitor.
  • An arrangement with a steam turbine, an exhaust pipe and one Capacitor that is designed in this way, in particular designed for a steam turbine with a mechanical output up to about 300 MW, as in a combined cycle power plant Commitment comes.
  • a combined cycle power plant becomes a power plant understood in which mechanical power from both a gas turbine is also generated by a steam turbine, wherein Exhaust gases from the gas turbine to provide steam for the Steam turbine can be used.
  • the exhaust gas from the gas turbine is the sole heat source for Provision of the steam.
  • An exhaust nozzle of the type mentioned is more common Practice preferably carried out as a welded construction, i.e. welded together from appropriately shaped steel sheets.
  • a rack for an inside of the exhaust pipe any necessary storage of the steam turbine is over welded supports connected to the actual exhaust pipe.
  • Necessary supply and discharge lines for operation of the bearing, especially supply lines for lubricating oil, pressure oil, Barrier steam and air as well as discharges for oil, oil vapor and Vapor steam along with any necessary cables for electrical and electronic components for monitoring and eventual Control of the warehouse must be in separate pipe channels from outside the exhaust pipe through the exhaust pipe be led to the camp.
  • GB 2 226 086 A relates to a frame structure for a gas turbine, in particular an aircraft engine turbine, with a Frame for supporting and positioning the turbine rotor in relation to the stator.
  • an inner fixed Housing connected to an outer fixed housing.
  • the outer housing has a one-piece cast annular component.
  • GB 2 281 592 A relates to an exhaust gas diffuser for a gas turbine.
  • This exhaust gas diffuser consists of a support structure and a guide structure for the hot gas.
  • the supporting structure is made up of an inner and an outer cylinder, that are connected.
  • the outer cylinder is formed from a variety of segments that are easily detachable are interconnected.
  • the inner cylinder is with that outer cylinder over a plurality of radial or tangential Support beams connected, with each segment of the outer Cylinder has such a support beam.
  • the invention is based on the foregoing considerations therefore based on the task of a component for an exhaust pipe a turbomachine and one in the exhaust pipe arranged bearing of the fluid machine to specify which can be manufactured with as little effort as possible, which, if possible, only requires cheap materials and which with regard to the necessary to supply the camp Inlets and outlets the available space as good as exploits the flow of the fluid as little as possible impair as possible.
  • a component is specified for one Exhaust pipe of a turbomachine and one in the exhaust pipe arranged bearing of the fluid machine, which is cast in one piece and a nozzle part and / or a Bearing part for receiving the bearing and a support arrangement with at least one support arm that the bearing part or Supporting the nozzle part and surrounding a pipe, which through the nozzle part or the bearing part and a support arm leads through.
  • the component according to the invention is therefore one Manufactured in one piece, it includes part of the exhaust pipe and / or part of a frame for the warehouse, namely that Bearing part, and at least one support arm, the bearing part (and later the entire warehouse) against the nozzle part or the can support entire exhaust pipe. Molded into the support arm is a pipe that runs through the support arm and is therefore suitable as a feed or discharge for a Fluid which is supplied to the bearing during operation or must be removed from the camp. Depending on requirements can be multiple pipes through a single Support arm to be passed.
  • the support arm arrangement preferably has at least in the component two support arms, which the stability of the component and the improved with this component exhaust pipe.
  • the pipeline can be a simple pipe from a single pipe, which is poured into the support arm.
  • Such a simple pipe is preferred for transporting a fluid that has a temperature has, which with the temperature of the arm flowing around Fluid approximately coincides so that not with significant tensions due to very different Temperatures must be expected.
  • a simple pipe is not enough, it can an insulating pipeline from a cast in the support arm Outer tube and one laid in the outer tube and be provided against this insulated inner tube.
  • a such insulating pipeline is particularly suitable for Transport a fluid whose temperature depends on the temperature of the component and of the fluid flowing around it deviates.
  • An important application in this sense is the use of a insulating pipeline for the supply of sealing steam the shaft seal in front of the bearing in an exhaust pipe Steam turbine.
  • the sealing steam becomes an assigned pipeline fed that the connection to the shaft seal in the exhaust pipe manufactures.
  • the so-called Vapor vapor extraction through an insulating pipe passed through a support arm and with a pipe connection connected to the shaft seal.
  • the temperature of the barrier steam or vapors steam high to a to avoid unwanted condensation. This is why it makes sense to supply the sealing steam or vapor to insulate the pipeline used.
  • This is preferably carried out by means of an insulating pipeline.
  • the barrier steam or vapor is through the inner tube guided, and a space between the inner tube and the outer tube can be evacuated or otherwise thermally insulated become.
  • the exhaust pipe connects a steam turbine to one Capacitor, so it prevails in normal operation a very low pressure; for the desired insulation it may therefore be sufficient to close the gap between the Inner tube and the outer tube only with the interior of the Exhaust pipe to connect.
  • Spacers can be separate components, for example Stars that are pushed onto the inner tube before it is pushed into the outer tube; it is also conceivable, the inner tube with outside ribs and / or to provide the outer tube with inner ribs that the Keep the outer tube and the inner tube apart.
  • the use of ceramic spacers is also possible; if necessary, the gap can also be insulated Material to be filled out.
  • the component is a nozzle part and an attached housing part for a housing of Fluid machine has. This allows the construction and the structure of the turbomachine and its exhaust pipe be significantly simplified.
  • the component can also, possibly in addition to one Nozzle part as described, a bearing part for the bearing of the Have fluid machine. Such would also be the design of the bearing in the concept representing the invention involved, which results in additional advantages.
  • Ductile iron is a cast iron material, which is characterized by about spherical graphite precipitates in a metallic Matrix. It differs from ordinary cast iron, which has flake-like precipitates of graphite. Ductile iron is a well-known material that is characterized both by good castability and by good machinability. A spheroidal cast iron component can be used with little Machining effort to be at contact surfaces the other components have to be connected, one to achieve specified dimensional accuracy, as in the frame a conventional casting process can not be guaranteed can.
  • the pipeline is preferably made of steel, which in particular in connection with the selection of Ductile iron is important as a material for the rest of the component is.
  • the term "steel” is appropriate here to interpret its most general meaning; therefore steel is an iron material that is opposed to a cast iron material due to a significantly lower carbon content, associated with a significantly higher ductility, and one distinguishes much higher melting point. In general a steel only melts at a temperature that is around 200 ° C higher as a cast iron material. This means that a Steel pipe does not melt when poured into a component, i.e. built into the mold intended for casting the component and cast with the liquid cast iron material.
  • a possibly impaired form stability due to after all quite high temperature to which the pipe is exposed can be countered by covering the pipe with sand or another suitable filler, especially one later meltable filler is filled.
  • sand or another suitable filler especially one later meltable filler is filled.
  • the nozzle part preferably has a flat side of it with a nozzle part of another component for manufacturing of the exhaust pipe is to be put together, the flat side lies in a plane which has an axis of rotation which contains the turbomachine.
  • the component So a half-shell for the exhaust pipe, which accordingly with two on corresponding plan sides towards each other components to be formed.
  • the invention also relates to a set of at least two components that meet the above requirements and each of which has a nozzle part, the The nozzle parts form an exhaust nozzle.
  • the set comprises a lower member with two references a vertically aligned vertical axis symmetrically mutually arranged and vertically inclined support arms, and one arranged vertically above the lower component upper component with a vertically aligned support arm.
  • the lower component can have a third vertically extending one Have support arm.
  • Such an arrangement with three or four support arms ensure particularly good support of the bearing laterally and vertically to the axis of rotation of the Fluid machine.
  • the third support arm supports the bearing and is particularly suitable for a cast pipeline that can be a simple pipeline and through the lubricating oil can be removed or supplied from the warehouse.
  • a turbomachine In connection with a turbomachine is usually a Plain bearings used to operate a supply of Oil is required in considerable quantities. This oil occurs along the stored shaft out of the bearing and must be swift and without Congestion can be removed; otherwise there is a risk that there is a build-up of pressure in the bearing housing and the function is impaired. Such swift removal The oil is supported when going through a vertical pipe and takes place using gravity.
  • the lower component particularly preferably has a lower one Nozzle part and a lower bearing part as well as the upper component an upper nozzle part and it is a middle component provided with an upper bearing part, the lower one Bearing part is connected to the upper bearing part and wherein the middle component at a separation point in a support arm is connected to the upper component.
  • the set according to the invention forms with at least two components particularly preferably an exhaust pipe for a steam turbine, as already indicated several times above.
  • an exhaust pipe is characterized by particularly good utilization of the available space and it requires no separate internals to the bearing in the exhaust pipe to supply with the necessary operating materials.
  • FIG. 1 shows a turbomachine 1, namely a steam turbine, with an associated exhaust pipe 2 through which Steam, which has been expanded in the steam turbine 1, one Capacitor is supplied.
  • a bearing 3 for a rotor 4 of the steam turbine 1 Arranged in the exhaust pipe 2 is a bearing 3 for a rotor 4 of the steam turbine 1, which is rotatable about an axis of rotation 5 and during the current operation rotates about this axis of rotation 5.
  • the Exhaust pipe 2 has a lower component 6 and an upper one Component 7.
  • Each component 6 or 7 has a nozzle part 8 or 9, which with the nozzle part 8, 9 of the other Component 6, 7 forms the actual exhaust pipe 2.
  • each component 6 or 7 has an associated bearing part 10 and 11, wherein both bearing parts 10, 11 a frame for the actual camp 3 form.
  • Each component 6, 7 has a vertical support arm 12, which the respective nozzle part 8 or 9 with the respective Bearing part 10 or 11 connects.
  • the components 6, 7 are in one piece executed, namely cast from ductile iron.
  • the vertical support arm 12 of the upper component 7 has one simple pipe 13, consisting of one in the support arm 12 cast single tube 13.
  • the upper bearing part 11 is cast with the support arm 12 in one piece. That in it located simple tube 13 is used to supply air in a gap 14 between the shaft seal 15 and the Bearing parts 10 and 11.
  • the vertical support arm 12 of the lower Component 6 has two simple pipes 16 and 17.
  • Each simple pipe 16, 17 in turn consists of one individual, cast into the support arm 12 tube 16, 17.
  • An each nozzle part 8, 9 is molded onto a housing part 18, which encloses part of the steam turbine 1 and one Connection for the rest of the housing 19 of the steam turbine 1 forms.
  • Figure 2 shows the components 6 and 7 without the front part of the Steam turbine and its other components.
  • the nozzle parts 8 and 9 the vertical support arms 12 and the bearing parts 10 and 11.
  • the present embodiment form a nozzle part 8 or 9 and a housing part 18 one unit each at which there is no sharp transition from the neck part 8, 9 to the housing part 15; this transition is essentially by the housing 19 on or steam turbine 1 to be installed.
  • the longitudinal section shown in Figure 2 is a section in is a vertical plane, a vertical axis 20 is the direction of the vertical defined in Figure 2, drawn.
  • FIG. 3 shows a section through the vertical support arm 12 of the lower component 6, as indicated by the line III-III in FIG. 2.
  • the ones in the support arm 12 are clearly recognizable cast pipes 16 and 17, which are different Have cross-sectional area and in particular the oil drain or supply serve.
  • FIG. 4 shows one in particular along the vertical axis 20 guided cross section through the exhaust pipe according to FIG. 2.
  • inclined support arms 21 each led a simple pipe 22, which into the lower bearing part 10 extends, and an insulating Pipeline 23, 24 leading into a shaft seal 15 Pipeline 25 opens.
  • the insulating pipes 23, 24 are used to guide sealing and / or vapor.
  • the lower component 6 has two with respect to vertical axis 20 symmetrically arranged inclined support arms 21 are the nozzle parts 8, 9 of the components 6 and 7 plan pages 26 which (this is in particular from FIG.
  • the nozzle parts 8 and 9 are thus half-shells of the exhaust nozzle 2.
  • the components 6 and 7 are preferably joined together using screws to inspect the steam turbine 1 or the like can be solved from each other.
  • An insulating pipe 23, 24 is designed with a poured into the inclined support arm 21 outer tube 23 and an inner tube 24 laid in an insulating manner in the outer tube 23. Means for spacing the inner tube 24 from the outer tube 23 are not shown for the sake of clarity; Details can be seen from FIG. 5.
  • All tubes 13, 16, 17, 22, 23, 24 are made of steel. They are poured in by before the casting of component 6 or 7 in the associated Mold installed and during the casting of the molten cast iron material be enveloped. Since the melting point of a Steel usually well above the melting point of a Cast iron material, the pipes 13, 16, 17, 22 melt, 23, 24 not in this procedure. To prevent them bend or otherwise deform, they will be in front of the Cast filled with a suitable filler, especially sand. All known components are available for casting the components 6, 7 Molding and casting processes available. Cheapest, and therefore preferably, is cast using the sand casting process, i.e. the mold is shaped with sand and the cast iron material poured into the mold thus formed.
  • Figure 5 shows a cross section through one of the inclined Support arms 21, as can be seen in Figure 4.
  • the cutting plane is indicated in Figure 4 by the lines V-V.
  • everyone inclined support arm 21 has a cast-in simple pipe 22 and a cast-in insulating pipeline 23, 24 on. Spacers 27 for spacing the inner tube 24 of the outer tube 23 can be seen in Figure 5.
  • All insulating pipes 23, 24 are excellent suitable for supplying hot fluids to the shaft seal 15 or to remove hot fluids from the shaft seal 15.
  • hot fluids are e.g. Vapor coming into the camp for sealing purposes is supplied, and vapor, i.e. steam, which leaks out of the bearing, if necessary with air and / or Oil vapor is contaminated and must be removed.
  • Operational reach the exhaust pipe 2 and its components 6 and 7 Temperatures around 50 ° C, especially between 40 ° C and 60 ° C.
  • Figure 6 shows a cross section similar to Figure 2 an exhaust pipe, which is compared to that shown in Figure 5 Exhaust pipe characterized in that it is not out two, but consists of three components 6, 7 and 29.
  • Exhaust pipe characterized in that it is not out two, but consists of three components 6, 7 and 29.
  • At a separation point 28 in the mentioned support arm 12 abut the upper component 7 and the central component 29.
  • the upper one Component 7 include a support arm 12; in any case it has an approach of this bracket 12.
  • Figures 7 and 8 show mutually orthogonal longitudinal sections through the middle component 29. These are recognizable upper bearing part 11, the partially existing vertical support arm 12 with cast-in simple pipe 13 and (in Figure 7) Holding devices 30 and 31 for manipulation of the central component 29 or useful for attachments could be.
  • the invention relates to a component for an exhaust pipe a turbomachine, in particular a steam turbine, which possibly necessary pipelines as integral Contains components and is cast in one piece.
  • the Manufacturing effort for such a component is compared to conventional welding technology significantly reduced; also can by arranging the pipelines accordingly Significantly save space. This can be from Be important for the operation of the turbomachine, because Free space for the fluid flowing out of the turbomachine Fluid is available, resulting in a Pressure loss when flowing through the exhaust pipe reduced with the fluid. From this results immediately a thermodynamic advantage.
  • the invention also relates to a set of several such components, wherein the exhaust pipe is formed entirely from these components is. For such an exhaust pipe, the open up mentioned advantages in a special way.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Supercharger (AREA)
  • Exhaust Silencers (AREA)
EP96922755A 1995-07-19 1996-07-08 Gussgehäuse für einen abgasstutzen einer strömungsmaschine, insbesondere einer dampfturbine Expired - Lifetime EP0839261B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19526392 1995-07-19
DE19526392 1995-07-19
DE19615011 1996-04-16
DE19615011A DE19615011A1 (de) 1995-07-19 1996-04-16 Bauteil für einen Abgasstutzen einer Strömungsmaschine, insbesondere einer Dampfturbine
PCT/DE1996/001231 WO1997004218A1 (de) 1995-07-19 1996-07-08 Gussgehäuse für einen abgasstutzen einer strömungsmaschine, insbesondere einer dampfturbine

Publications (2)

Publication Number Publication Date
EP0839261A1 EP0839261A1 (de) 1998-05-06
EP0839261B1 true EP0839261B1 (de) 2000-10-04

Family

ID=26016961

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96922755A Expired - Lifetime EP0839261B1 (de) 1995-07-19 1996-07-08 Gussgehäuse für einen abgasstutzen einer strömungsmaschine, insbesondere einer dampfturbine

Country Status (11)

Country Link
EP (1) EP0839261B1 (zh)
JP (1) JP3869009B2 (zh)
KR (1) KR19990029031A (zh)
CN (1) CN1092749C (zh)
CZ (1) CZ290254B6 (zh)
DE (2) DE19615011A1 (zh)
ES (1) ES2152536T3 (zh)
PL (1) PL181549B1 (zh)
RU (1) RU2162948C2 (zh)
UA (1) UA39224C2 (zh)
WO (1) WO1997004218A1 (zh)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1143946C (zh) 1997-09-26 2004-03-31 西门子公司 叶片机械用壳体
US6547518B1 (en) 2001-04-06 2003-04-15 General Electric Company Low hoop stress turbine frame support
EP1650408B1 (de) * 2004-10-22 2013-03-27 Siemens Aktiengesellschaft Dampfturbine mit einer Strebe zum Abstützen eines Bauelements
JP4541950B2 (ja) * 2005-03-31 2010-09-08 株式会社日立製作所 タービン排気装置及びその改造方法
EP1793091A1 (de) * 2005-12-01 2007-06-06 Siemens Aktiengesellschaft Dampfturbine mit Lagerstreben
US8388314B2 (en) * 2011-04-21 2013-03-05 General Electric Company Turbine inlet casing with integral bearing housing
PL417032A1 (pl) * 2016-04-28 2017-11-06 General Electric Company Radialny dyfuzor wydechowy
DE102018212131A1 (de) * 2018-07-20 2020-01-23 Siemens Aktiengesellschaft Kondensationsabdampfgehäuse für eine Dampfturbine
US11352979B2 (en) * 2020-04-24 2022-06-07 Raytheon Technologies Corporation Housing less front bearing compartment for gas turbine engine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB742241A (en) * 1951-02-15 1955-12-21 Power Jets Res & Dev Ltd Improvements in the cooling of turbines
GB940195A (en) * 1962-03-14 1963-10-23 Rolls Royce Gas turbine engine
DE2219661A1 (de) * 1972-04-21 1973-10-31 Siemens Ag Verfahren zur herstellung von gehaeusen fuer dampfturbinen
CH570549A5 (zh) * 1974-04-09 1975-12-15 Bbc Sulzer Turbomaschinen
US4183207A (en) * 1978-03-07 1980-01-15 Avco Corporation Oil-conducting strut for turbine engines
DE3621125A1 (de) * 1986-06-24 1988-01-07 Kloeckner Humboldt Deutz Ag Gehaeusezentrierung
US4987736A (en) * 1988-12-14 1991-01-29 General Electric Company Lightweight gas turbine engine frame with free-floating heat shield
CH685448A5 (de) * 1991-03-28 1995-07-14 Asea Brown Boveri Ag Ansaldo C Dampfturbogruppe.
DE4329623A1 (de) * 1993-09-02 1995-03-09 Abb Management Ag Abgasdiffusor

Also Published As

Publication number Publication date
PL324519A1 (en) 1998-06-08
ES2152536T3 (es) 2001-02-01
CZ290254B6 (cs) 2002-06-12
DE59605966D1 (de) 2000-11-09
JP3869009B2 (ja) 2007-01-17
DE19615011A1 (de) 1997-01-23
CZ9998A3 (cs) 1998-05-13
KR19990029031A (ko) 1999-04-15
CN1092749C (zh) 2002-10-16
UA39224C2 (uk) 2001-06-15
CN1191006A (zh) 1998-08-19
EP0839261A1 (de) 1998-05-06
PL181549B1 (pl) 2001-08-31
WO1997004218A1 (de) 1997-02-06
JPH11509291A (ja) 1999-08-17
RU2162948C2 (ru) 2001-02-10

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