WO2006114110A1 - Turbine hydraulique, en particulier turbine francis , - Google Patents

Turbine hydraulique, en particulier turbine francis , Download PDF

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Publication number
WO2006114110A1
WO2006114110A1 PCT/EP2005/004350 EP2005004350W WO2006114110A1 WO 2006114110 A1 WO2006114110 A1 WO 2006114110A1 EP 2005004350 W EP2005004350 W EP 2005004350W WO 2006114110 A1 WO2006114110 A1 WO 2006114110A1
Authority
WO
WIPO (PCT)
Prior art keywords
casting core
longitudinal
casting
water
ribs
Prior art date
Application number
PCT/EP2005/004350
Other languages
German (de)
English (en)
Inventor
Roland Egli
Federico Loeffler
Original Assignee
Voith Siemens Hydro Power Generation Gmbh & Co. Kg
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 Voith Siemens Hydro Power Generation Gmbh & Co. Kg filed Critical Voith Siemens Hydro Power Generation Gmbh & Co. Kg
Priority to MX2007012983A priority Critical patent/MX2007012983A/es
Priority to BRPI0520234-5A priority patent/BRPI0520234A2/pt
Priority to PCT/EP2005/004350 priority patent/WO2006114110A1/fr
Publication of WO2006114110A1 publication Critical patent/WO2006114110A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
    • F03B11/02—Casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B7/00—Moulds; Cores; Mandrels
    • B28B7/28—Cores; Mandrels
    • B28B7/30—Cores; Mandrels adjustable, collapsible, or expanding
    • B28B7/32—Cores; Mandrels adjustable, collapsible, or expanding inflatable
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/063—Re-usable forms
    • E04G15/066—Re-usable forms with fluid means to modify the section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/21—Manufacture essentially without removing material by casting
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/20—Hydro energy
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to the field of hydraulic machines, in particular the Francis-type water turbines.
  • Such turbines include as essential components an impeller having a plurality of blades.
  • the blades are generally preceded by fixed or adjustable vanes.
  • the impeller generally has a vertical shaft which is drivingly connected to a generator.
  • the impeller is surrounded by a volute, which delivers water to the impeller - possibly via the vanes.
  • a suction pipe is connected to the impeller. This has a vertical section followed by a manifold followed by a horizontal section.
  • the aforementioned spiral housing as well as the suction tube are made of steel. They can be assembled from individual sheets, but can also be produced by casting.
  • US 5 108 671 describes a method for manufacturing a suction pipe of a water turbine. Numerous panels are produced, each of which includes a steel frame, poured with concrete. US 992 782, US 3 729 165, US 4 997 602 and US 5 032 197 relate to the manufacture of metal molds for forming cavities within concrete structures.
  • the invention has for its object to provide a method and an apparatus, which means water-bearing channels by means of a molding or
  • Casting process can be produced.
  • the manufacturing costs should be low, and the dimensional accuracy of the channels to be high.
  • the water-bearing surfaces should be smooth and stepless.
  • a casting core is first created.
  • the lateral surface of the casting core corresponds to the water-bearing surface of the flow channel to be generated, thus, for example, the spiral housing of a Francis turbine.
  • the casting core is then placed in the position in which the water-bearing channel is to be located.
  • the G cordkem is divided into two or more longitudinal sections.
  • the longitudinal sections are joined together before casting. They can be locked together, for example, by the fact that the front sides of two adjacent sections have jaws and counter-claws, which engage in the manner of a bayonet lock in one another.
  • the locking is done by turning the two adjacent sections relative to each other, and unlocking in turn by turning, but in the opposite direction.
  • the casting core is then poured into concrete or other hardenable casting compound. After curing of the casting material, the longitudinal sections of the casting core are removed in succession from the then resulting channel.
  • the longitudinal sections of the casting core may have cavities which are in a conductive connection with each other after the joining of the longitudinal sections.
  • the longitudinal sections can be formed at least in the region of their lateral surface of a material which is expandable under pressure or shrinkable under reduced pressure.
  • a material is for example rubber or a similar elastic material into consideration, but also any other material such as steel, concrete, plastic.
  • an overpressure can be applied to the cavities of the longitudinal sections.
  • the water-bearing surfaces of the channel are compressed and reduces the roughness.
  • a negative pressure can be applied to the cavities, so that they shrink.
  • the individual casting core sections can be easily removed in this way from the water-conveying channel then produced.
  • the cores are reusable, so that a plurality of the same or similar water-bearing channels, such as spiral casings or suction pipes, can be made with one and the same casting core. It is also conceivable, with a corresponding modular structure, to produce casting cores from longitudinal sections which can be used for various water-bearing channels.
  • the casting core according to the invention is, as stated above, assembled from a number of longitudinal sections.
  • the individual longitudinal sections can in turn be constructed of two or more parts.
  • the casting core will have a circular or approximately circular cross-section. But it can also have other cross-sectional shapes, for example, be oval. Seen in cross-section, the single longitudinal section can be assembled from circular segments or ring segments.
  • the casting core is constructed from a skeleton whose interspaces are filled by a filling compound.
  • the skeleton comprises, for example, longitudinal ribs which extend in the longitudinal direction of the casting core, and also circumferential ribs which lie in planes which are inclined in relation to the longitudinal axis of the casting core.
  • the skeleton can be a lightweight and possibly flexible construction, for example made of plastic or glass fiber reinforced synthetic resin.
  • the fields formed by adjacent ribs may be filled with a filler such as a polymer, a cement, or a mixture of said or other substances.
  • Figure 1 shows an inventive hydroelectric plant in an axial section.
  • Figure 2 shows a Francis turbine according to the prior art in an axial section.
  • FIG. 3 shows two casting core sections according to the invention, joined together and locked together.
  • FIG. 4 shows a locking device
  • FIG. 5 shows a casting core according to a first embodiment of the invention in a cross section.
  • Figure 6 shows a perspective view of an inventive
  • Casting core in a second embodiment (skeleton construction) in the stage of its emergence.
  • FIG. 7 shows a part of the casting core according to FIG. 6, again in a perspective view.
  • FIG. 8 shows the subject matter of FIG. 6 in section, specifically in an axially perpendicular section.
  • FIG. 9 shows the casting core according to FIG. 6 in the finished state.
  • the hydropower plant shown in FIG. 1 comprises a generator part 1 and a turbine part 2. Both parts have a common, vertical shaft 5.
  • Turbine part 2 comprises a Francis turbine with an impeller 4, a volute 6 and a suction pipe 7 the turbine part 2 completely encloses.
  • the water-bearing surfaces of the spiral housing 6 as well as the suction tube 7 are formed of concrete.
  • spiral housing 6 and suction pipe 7 are made of steel.
  • FIG. 3 shows two casting core longitudinal sections 8.1 and 8.2. These serve to produce the upper part of the suction pipe 7 shown in FIG.
  • Longitudinal section 8.1 is frusto-conical, and longitudinal section 8.2 is cylindrical.
  • the two casting core longitudinal sections 8.1 and 8.2 can be locked together by a locking device 9. From Figure 4 can be seen two locking claws 9.1 and 9.2. In each case one of these claws is assigned to one of the casting core longitudinal sections 8.1 or 8.2 and fixed thereto. The locking or unlocking is done by relative rotation of the two G mankern longitudinal sections 8.1, 8.2.
  • the water-carrying channel to be generated-for example volute casing or suction pipe-can have any desired cross section over its length.
  • the frustum-shaped casting core longitudinal section 8.1 may have a circular cross section, but the cylindrical casting core longitudinal section 8.2 may have a slightly elliptical one.
  • special measures must be taken to apply the locking principle described above with the two locking claws 9.1 and 9.2 can.
  • at least one of the two longitudinal sections, for example section 8.2 is constructed from two mutually concentric bodies, namely an inner body 8.2.1 and an annular outer body 8.2.2.
  • the interface 8.2.3 between these two bodies is a circular cylinder.
  • Locking claws 9.2 of the casting core longitudinal section 8.2 is fixed in this case on the inner body 8.2.1 of the casting core longitudinal section 8.2.
  • the inner body 8.2.1 can be rotated freely about its longitudinal axis, which means that the lateral surface of the outer body 8.2.2 can have a different cross section than a circular cross section.
  • the two bodies are 8.2.1 and 8.2.2 fixed in the axial direction to each other, so that when moving in the axial direction, both bodies perform the sliding movement together.
  • the illustration according to FIG. 5 shows a casting core 8, which is constructed from an inner support beam 8.3 and an outer shell 8.4.
  • the support beam 8.3 may be a solid cylinder or solid cylinder. It can be made of any material, such as steel, wood, concrete, plastic. He should have a certain rigidity.
  • the G tellkern stringer consists of a tube. This can be made of steel or plastic or another material. Conveniently, it consists of a material of low specific weight. For example, the specific gravity could be 1/5 or 1/10 or even less of the specific gravity of steel.
  • the G guesskernmantel 8.4 can sit tightly and tightly on the G tellkern stringer 8.3. But it can also be pushed loose so that an annular space remains between the inner surface of the shell and the outer surface of the supporting beam. The annulus can be minimal so that the facing surfaces of the support beam and mantle practically touch.
  • the annulus is connected in the present case to a medium, see the medium line 8.4 and the port 8.5.
  • the medium can be air or a liquid. It can be connected to an overpressure source or to a vacuum source - not shown here.
  • the casting core shell 8.4 may have very different wall thicknesses from case to case. For example, it can occupy half the diameter of the entire casting core 8. But it can also be comparatively very thin, for example, only 1/10 or 1/20 or even less of the entire G mankern- diameter. If the casting core support beam 8.3 designed as a tube, as shown here, the mechanical joining of two adjacent G tellkernabitese is very simple.
  • the tubes 8.3 of two adjacent casting core sections 8.1 and 8.2 can be telescoped into one another, for example.
  • a mutual locking, if necessary, can here again z. B. make with a bayonet lock. It is essential that the casting core 8 is composed of individual longitudinal sections which are joined together and locked together.
  • the diameter of the casting core jacket 8.4 may be slightly smaller in the initial state than the inside diameter of the channel to be generated.
  • the production of the channel then proceeds as follows: The casting core is completely assembled by joining together its individual longitudinal sections and locking them together. The casting core is placed exactly in the position that the channel to be created will occupy. Then, the casting core is embedded in the casting material, for example in concrete. After a certain period of time, that is to say the incipient hardening of the casting compound, the individual casting core longitudinal sections 8.1, 8.2 and so on are subjected to a certain internal pressure. As a result, the channel is slightly widened in statu nascendi. This has the consequence that the water-bearing surfaces of the channel are compressed and at the same time smoothed, which later reduces the flow resistance in a favorable manner.
  • the G tellkern stringer 8.3 can also be omitted. Again, could be used with a pressurized medium for the purpose of widening the casting core jacket 8.4.
  • the exemplary embodiments described so far could be referred to as the "first solution principle.” This is characterized by great simplicity.
  • the casting core is made up of a skeleton comprising longitudinal ribs which extend in the longitudinal direction of the casting core longitudinal section in question and circumferential ribs which extend in the circumferential direction of the casting core longitudinal section.
  • FIG. 9 shows a complete casting core 8. It is composed of a number of longitudinal casting core sections 8.1, 8.2, 8.3.
  • the complete casting core 8 is poured into concrete as previously described so that it is completely enclosed by concrete 99 - see FIG. 8. After hardening, the casting core longitudinal sections 8.1 and so forth are disassembled and individually removed from the created channel.
  • Each casting core longitudinal section 8.1, 8.2, 8.3 comprises a skeleton 12 - see Figure 6 - and a plate or panel 13 - see Figures 7 and 8.
  • the skeleton or its ribs consists of relatively lightweight, durable, flexible material, such as glass fiber reinforced resin , Epoxy, plastic or the like.
  • the individual plates 13 in the present case are constructed of a polymer, of concrete, or of a mixture thereof or of other filling material.
  • the skeleton 12 has an inner sleeve-shaped wall 21 - see for example Figure 6, further two or more annular flanges 22, which could be referred to as peripheral ribs of the skeleton, and a number of longitudinal flanges 23, which could be termed longitudinal ribs.
  • the combination of said components has a tray-like configuration with a convex bottom and standing sidewalls.
  • the annular flanges 22 and the longitudinal flanges 23 include inner flange portions 24 and outer flange portions 25 - see Figure 8.
  • the outer flange portions 25 extend outwardly from the inner sleeve-shaped wall 21 and form side surfaces of the skeleton 12.
  • the inner flange portions 24 extend inwardly from the inner sleeve-shaped wall 21 into a working bore 17 of the casting core 10 formed from the numerous casting core longitudinal sections.
  • the inner flange portions 24 include means for connecting the longitudinal casting core sections 8.1, 8.2 and so on. This is a mechanical fastening device 31 in the form of screws and nuts. The screws are passed through holes 27 in the inner flange portions 24. In a preferred embodiment, at least one bore 27 is formed as a slot to allow a mutual adjustment of the G discernkem longitudinal sections.
  • the skeleton 12 comprises a plate 13 of a polymer-concrete aggregate and is connected to this plate fe, st.
  • the outer surface of the plate 13 is flush with the peripheral edges 26 of the annular flanges 22 and the longitudinal flanges 23.
  • the concrete material of the plate 13 is a material of low density and low compressive strength and increased flexibility and high elasticity provided compared with the usual concrete.
  • the polymer concrete or cement aggregate used is composed of lightweight polymer or polymer foam beads or similar low weight and low density particles.
  • a given amount of the mass may include the following ingredients: 300 kg of cement, 150 kg of sand, 150 kg of water and 7 kg of a binder. This results in a product having a density equivalent of about 50% water or about 500 g / l and a compressive strength of about 20% of conventional concrete.
  • the hardened concrete is much lighter than ordinary concrete.
  • the material has a specific weight such as wood, has some flexibility and elasticity due to the presence of polystyrene in the form of particles.
  • a wire mesh 15 may be embedded in the panel 13, of course other reinforcing means such as a woven fabric or a scrim of wires.
  • the overall dimensions of the individual core longitudinal section 8.1, 8.2 and so forth depend on the size and shape of the channel to be created. However, the maximum dimensions of a core longitudinal section should be limited so that its weight is not more than 40 kg, so that it can easily handle two men, especially when assembling and assembling into a single casting core 8.
  • Spacers 32 between adjacent flanges 22 and 23 define the desired curvature of the outer surface 14 of the casting core 8. The more the outer surface 14 is curved, the tighter the flanges 22 and 23 will be adjacent.
  • the spacers 32 - see Figure 8 - are best made of similar material as the skeleton 12.
  • the spacers 32 are interposed between adjacent pairs of annular flanges 22 and adjacent pairs of longitudinal flanges 23.
  • the peripheral edges 33 of the spacers 32 extend beyond the peripheral edges 26 of the flanges 22 and 23.
  • the peripheral edges 23 of the spacers 32 serve as guides for forming the outer surface or shell surface 14 of the single polymer concrete slab 13.
  • the longitudinal section shown in FIG. 6 is formed.
  • the formation of this longitudinal section can be done in situ or at another location.
  • a smooth layer 16 is best applied to a correspondingly smooth, water-bearing surface of the to be generated
  • Such a gloss layer is best made of a mixture of acrylic resin, cement and fine sand. Other materials such as polyurethane, epoxy may also be used as the gloss layer 16.
  • the individual, interconnected longitudinal sections 8.1, 8.2 and so on then form the complete casting core 8.
  • Casting core 8 is constructed so that it can be pressurized after its assembly and inflated in some way. This is the still wet concrete a certain pressure opposed to produce dense and smooth molding surfaces. As shown in Figure 9, the working bore 17 is shut off by a pneumatic seal 41.
  • a pressure medium source 42 directs pressure medium into the interior of the casting core 8.
  • a curved, substantially cone-shaped sheet metal matrix is produced whose struts allow a curvature to be varied.
  • the inner sleeve-shaped wall 21 and the flanges 22 and 23 are formed on the matrix of glass fiber reinforced plastic or similar material, to a thickness of about 1 to 2 cm.
  • the said holes 27 are introduced.
  • the skeletal parts 12 are reassembled, aligned and measured in place to ensure accurate positioning of the spacer peripheral edges 33. Reinforcing elements 15 are fixed to the skeleton parts 12. Then, a polymer-concrete mixture is produced to pour out the skeleton 12, for example by spraying. The polymer-concrete mass is relatively viscous to facilitate molding of the plates 13. The wet polymer concrete mass is applied manually using preformed rulers to form the desired configuration of the forming surface 14.
  • the peripheral edges 33 of each skeleton 12 serve as a guide. As each Skeleton 12 has its own set of peripheral edges 3 and is separated from the adjacent Gellokern longitudinal section by the flanges 22 and 23, the plates 13 can be completed individually. This ensures that the outer surface of each plate 13 is accurate.
  • a gloss layer 16 is applied, for example by brushing. After curing of the gloss layer 16 - generally several days - if necessary, further work on the mold surface 14 are made. Before the casting of concrete to produce the concrete structure 99, a mold release agent can be applied to the gloss layer 16 in order to allow easy removal of the casting core after completion of the casting.
  • the complete, assembled casting core is then pressurized and the mold surface 14 measured to ensure that it has the correct dimensions.
  • Concrete construction 99 positioned. Then, the liquid concrete is poured to embed the casting core 8. Optionally, a slight pressure is applied to achieve expansion of the casting core 8. In this case, a few millimeters expansion in the radial direction may suffice, for example 2, 3, 4, 5, 6, 7, 8 mm. In a conventional plant, the concrete structure 99 can be four meters thick. She is shed in layers.
  • the longitudinal sections of the casting core are unlocked and removed from each other. Due to this pressure relief and due to the slight flexibility of the individual longitudinal sections, these can be pulled out individually through the working bore 17. The longitudinal sections can then be cleaned, inspected and repaired if necessary. They can be reused for similar casting operations.
  • the individual parts of the casting core for example, adjacent G confusekern- longitudinal sections can also by other than mechanical means be temporarily connected for the purposes of performing the casting process.
  • magnets come into consideration, which are embedded in the front ends of adjacent G confusekern longitudinal sections.
  • the invention can be applied to pressure and suction water supply in water turbines, pumps and pump turbines - the cross-sectional shape and / or cross-sectional size of the flow channel can be changed via the flow path, for example, from circular to elliptical, from elliptical to circular Cross-sectional shape can be changed in the course of the flow path from a horizontal to a vertical ellipse shape - the cross-sectional shape and / or size can be in terms of a
  • optimization of the efficiency change for example, in the intake manifold to avoid secondary flows regardless of the design of flow channels made of concrete or other formable and curable mass can also be components made of steel or other materials use and integrate into the mass, such as steel spurs

Abstract

L'invention concerne un procédé pour produire une canalisation d'eau comprenant des surfaces conduisant l'eau, destinée à être utilisée dans une turbine hydraulique ou tout autre moteur hydraulique au moyen d'un procédé de moulage, ce dernier comprenant les étapes suivantes : au moins deux sections (8.1, 8.2, 8.3) longitudinales sont associées de manière à former une âme, la forme et la position de la surface extérieure de l'âme correspondant aux surfaces conductrices d'eau de la canalisation ou sa forme présentant une dimension inférieure, plutôt faible, à celle des surface conductrices d'eau de la canalisation ; l'âme est moulée dans du béton ou tout autre matériau de moulage durci par vieillissement ; et les sections longitudinales de l'âme sont éliminées successivement de la canalisation ainsi obtenue, une fois que le matériau de moulage est durci.
PCT/EP2005/004350 2005-04-22 2005-04-22 Turbine hydraulique, en particulier turbine francis , WO2006114110A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
MX2007012983A MX2007012983A (es) 2005-04-22 2005-04-22 Turbina de agua, especialmente turbina de agua de tipo francis.
BRPI0520234-5A BRPI0520234A2 (pt) 2005-04-22 2005-04-22 dispositivo e processo para produção de um canal condutor de água
PCT/EP2005/004350 WO2006114110A1 (fr) 2005-04-22 2005-04-22 Turbine hydraulique, en particulier turbine francis ,

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2005/004350 WO2006114110A1 (fr) 2005-04-22 2005-04-22 Turbine hydraulique, en particulier turbine francis ,

Publications (1)

Publication Number Publication Date
WO2006114110A1 true WO2006114110A1 (fr) 2006-11-02

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ID=35063312

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/004350 WO2006114110A1 (fr) 2005-04-22 2005-04-22 Turbine hydraulique, en particulier turbine francis ,

Country Status (3)

Country Link
BR (1) BRPI0520234A2 (fr)
MX (1) MX2007012983A (fr)
WO (1) WO2006114110A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010026449A1 (de) * 2010-07-08 2012-01-12 Ksb Aktiengesellschaft Strömungsmaschine
EP3299118A1 (fr) * 2016-09-23 2018-03-28 Datron AG Élément structural d'une machine

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Publication number Priority date Publication date Assignee Title
NL10755C (fr) * 1900-01-01
US992782A (en) 1910-07-14 1911-05-23 Charles S Lambie Forming concrete manholes.
FR1340178A (fr) * 1962-04-05 1963-10-18 Elton Bv Ind & Handel Procédé de construction d'un conduit de cheminée et conduit de cheminée construit selon ce procédé
US3729165A (en) 1971-06-16 1973-04-24 Cypert J Form for manholes and the like
US4060218A (en) * 1975-06-26 1977-11-29 Kandiah Tharma Nayagam Pneumatically controlled rigid core-former
US4997602A (en) 1988-09-02 1991-03-05 Action Products Marketing Corporation Cast-in-place manhole liner method
US5032197A (en) 1988-09-02 1991-07-16 Action Products Marketing Corporation Cast-in-place manhole liner method
US5108671A (en) 1991-08-07 1992-04-28 Kiewit Construction Group Inc. Concrete formwork and method for forming a draft tube
JP2001038713A (ja) * 1999-07-28 2001-02-13 Igarashi Kogyo Kk コンクリ−トセグメント型枠構造
JP2002168171A (ja) * 2000-11-30 2002-06-14 Toshiba Corp 水力機械の吸出し管ライナおよびその据付方法
CA2344906A1 (fr) * 2001-04-20 2002-10-20 Nrjo Inc. Turbine hydraulique modulaire

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL10755C (fr) * 1900-01-01
US992782A (en) 1910-07-14 1911-05-23 Charles S Lambie Forming concrete manholes.
FR1340178A (fr) * 1962-04-05 1963-10-18 Elton Bv Ind & Handel Procédé de construction d'un conduit de cheminée et conduit de cheminée construit selon ce procédé
US3729165A (en) 1971-06-16 1973-04-24 Cypert J Form for manholes and the like
US4060218A (en) * 1975-06-26 1977-11-29 Kandiah Tharma Nayagam Pneumatically controlled rigid core-former
US4997602A (en) 1988-09-02 1991-03-05 Action Products Marketing Corporation Cast-in-place manhole liner method
US5032197A (en) 1988-09-02 1991-07-16 Action Products Marketing Corporation Cast-in-place manhole liner method
US5108671A (en) 1991-08-07 1992-04-28 Kiewit Construction Group Inc. Concrete formwork and method for forming a draft tube
JP2001038713A (ja) * 1999-07-28 2001-02-13 Igarashi Kogyo Kk コンクリ−トセグメント型枠構造
JP2002168171A (ja) * 2000-11-30 2002-06-14 Toshiba Corp 水力機械の吸出し管ライナおよびその据付方法
CA2344906A1 (fr) * 2001-04-20 2002-10-20 Nrjo Inc. Turbine hydraulique modulaire

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* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2002, no. 10 10 October 2002 (2002-10-10) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010026449A1 (de) * 2010-07-08 2012-01-12 Ksb Aktiengesellschaft Strömungsmaschine
EP3299118A1 (fr) * 2016-09-23 2018-03-28 Datron AG Élément structural d'une machine

Also Published As

Publication number Publication date
MX2007012983A (es) 2008-03-27
BRPI0520234A2 (pt) 2009-08-18

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