EP3368823A1 - Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugers - Google Patents
Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugersInfo
- Publication number
- EP3368823A1 EP3368823A1 EP16788666.2A EP16788666A EP3368823A1 EP 3368823 A1 EP3368823 A1 EP 3368823A1 EP 16788666 A EP16788666 A EP 16788666A EP 3368823 A1 EP3368823 A1 EP 3368823A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- band
- flexible lance
- recesses
- flexible
- longitudinal direction
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/002—Component parts or details of steam boilers specially adapted for nuclear steam generators, e.g. maintenance, repairing or inspecting equipment not otherwise provided for
- F22B37/003—Maintenance, repairing or inspecting equipment positioned in or via the headers
- F22B37/005—Positioning apparatus specially adapted therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/483—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers specially adapted for nuclear steam generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/04—Hand tools, e.g. rakes, prickers, tongs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/52—Washing-out devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices or arrangements for removing water, minerals or sludge from boilers ; Arrangement of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/54—De-sludging or blow-down devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G1/00—Non-rotary, e.g. reciprocated, appliances
- F28G1/16—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris
- F28G1/166—Non-rotary, e.g. reciprocated, appliances using jets of fluid for removing debris from external surfaces of heat exchange conduits
Definitions
- the invention relates to a flexible lance for processing or inspecting a tube plate of a steam generator, having a first and a second band, each consisting of a flexible, metallic material, and a longitudinally extending formation for receiving a supply line for one at the free end forming the flexible lance arranged processing or inspection head.
- the flexible lance for machining or inspecting a tube plate of a vapor generator comprises a first band of a flexible, metallic material and a second band of a flexible metallic material.
- the second band is arranged longitudinally on the first band. Further, at least the second band has a longitudinally extending formation for receiving at least one supply line for a processing or inspection head disposed at the free end of the flexible lance.
- the first band is connected to the second band such that an open side of the formation formed by the second band is covered by the first band forming a guide channel.
- At least one longitudinally extending edge region of the flexible lance is merely formed by the first band or the second band. In other words, only one of the two bands is present in the edge region or in both longitudinally and outwardly extending edge regions of the flexible lance, i. E. H. the first and second bands have different widths.
- the advantages of the invention are in particular that due to the smaller size of the first or second band which does not have the Border area forms, material is saved. Furthermore, the flexural strength, stability and flexibility of the flexible lance can be influenced in a structurally simple manner already solely by the variation of the width of the bands and thus the size of the edge region.
- a further advantage of the invention is that supply lines necessary for the operation of the processing or inspection head, such as e.g. a water or power supply or optical glass fibers to illuminate the body to be cleaned or processed, are protected within the guide channel from damage and also an uncontrolled kinking of the supply lines is largely avoided.
- both bands can have a shape for receiving supply lines.
- the first band is preferably formed largely flat and thus has two flat, opposite flat sides.
- the molding is thus formed only by the second band, whereby the production is further simplified, since only one band must be formed.
- the edge region is then preferably formed only by the first, largely planar band.
- the second band is preferably arranged in the longitudinal direction and symmetrically about a central longitudinal axis of the first band on the first band, whereby the stability of the flexible lance is increased. If the second band itself also has a symmetrical configuration, the shaping is thus formed centrally or centrally in the longitudinal direction, so that the guide channel is also arranged centrally about a central longitudinal axis of the first band or the flexible lance. As a result, a mechanical load on the supply lines is minimized, for example in the event of a lateral kinking of the lance.
- openings are provided for engagement with a feed device or a gear of such a feed device.
- the openings are equidistant from each other or equidistant in a row, ie arranged one behind the other in Leksrichtu ng.
- the openings are arranged in the edge region and thus only present in the first or the second band. This has the advantage that when manufacturing the flexible lance it is not necessary to make sure that the first and the second strip are so connected that the openings are congruent in order to prevent jamming of the feed device during the movement of the machining - or inspection head to avoid.
- larger production tolerances are envisaged, since several openings do not have to be coordinated with one another in terms of their expansion.
- time and effort are saved because only in a band openings must be introduced, which is done for example by means of laser beam cutting.
- the openings for the gear drive can be manufactured in a simple and exact manner.
- the first and second bands are connected to each other at connection points. This can be done by N ieten, screws or similar mechanical Verbindu ngs shame.
- the connection to the connectors is by virtue of welding by means of welding, which requires fewer manufacturing steps and only marginally affects the material in the vicinity of the connector.
- the second band has in longitudinal direction successively arranged recesses which extend perpendicular to the longitudinal direction or in the transverse direction of the flexible lance.
- the Ausappelu lengths extend in particular at least partially beyond the molding addition.
- the recesses are formed as slots.
- the second band is in one piece and the formations are produced, for example, by means of laser beam cutting. the generated.
- the first band can also have recesses, for example in the region covering the guide channel. The recesses ensure that the second and optionally also the first band and thus the flexible lance will not become impermissibly stiff for some applications.
- a minimum radius of curvature of the flexible lance can be adjusted.
- the minimum radius of curvature is to be understood as the radius at which a further turning of the lance is made considerably more difficult, that is to say a further lateral bending is largely prevented.
- permanent deformation and breakage of the supply lines arranged in the guide channel are reliably prevented.
- a part of the recesses are formed as first recesses, which extend on both sides and completely beyond the formation and end at a distance in front of the edge of the second band.
- a part of the recesses is formed as second recesses, which each extend from an edge of the second band to the molding out.
- two second recesses lie opposite each other in pairs, ie are arranged along or parallel to a line relative to the transverse direction of the flexible lance.
- the band has only one of the two forms of recesses or these follow one another in any order.
- the first and the second recesses each follow one another alternately in the longitudinal direction.
- an edge portion of the second band, each arranged between two second recesses has a rounded shape.
- the connection points at which the first and the second strip are welded together lie, for example, in this rounded edge section.
- the second band is formed by means of laser beam cutting, round edge sections can be produced more easily.
- round edge sections or edges have an advantageous force distribution and better sliding properties.
- the first and second bands preferably have different bending strengths. As a material for the flexible lance or for the first and the second band spring steel, for example, is used. In a structurally simple manner, the bending strength of the first and of the second band is varied in that the first and the second band have a different thickness.
- FIG. 3 shows a longitudinal view of the second band of the flexible lance from FIG. 1 before connecting it in a longitudinal view
- FIG. 4 shows a schematic presen- tation of the use of the flexible
- Lance when working or inspecting a tube plate of a steam generator. 1 shows a flexible lance 2 for processing or inspecting a tube plate of a steam generator.
- the flexible lance 2 is composed of a flexible, metal-ischemic first band 4 and a flexible, metallic second band 6.
- the two bands 4, 6 are made of spring steel, such as stainless steel, and have a thickness or wall thickness of about 0, 1 to 0.3 mm.
- the width Bi of the first band 4 is about 40 mm, the width B 2 of the second band 6 about 24 mm.
- the second band 6 thus has a smaller width than the first band 4.
- the second band 6 is arranged in the longitudinal direction L on the first band 4 and has a longitudinally extending L forming 8 or recording to r receiving three Versorgu Lgs on 10, which arranged on a at the free end 12 of the flexible lance 2, in FIG. 1 for reasons of clarity not dargestel ended editing or inspection head are connected.
- the Ausformu ng 8 has a cross-sectionally U-shaped profile and is extended in the longitudinal direction L of the lance.
- the first band 4 and the second band 6 have different bending strengths. H ierphil r the first and the second band 4, 6 have a difference Liche thickness.
- the first band 4 and the second band 6 are connected to one another at connection points 14, which lie in an edge portion 34 of the second band 6 (see FIG.
- the first band 4 has two opposing flat sides 16.
- the existing in the second band 6 Ausformu ng 8 and one, the second band 6 facing flat side 16 of the first band 4 form a Flicku ngskanal 18 between them, in which the supply ungsleitu 10 are gene led.
- an open side of the Ausformu ng 8 of the first band. 4 Covered ü so that the Floppyu ngskanal 18 is closed on all sides and the supply lines 10 are thus protected from damage.
- the guide channel 18 extends as well as the Ausformu ng 8 in L jossrichtu ng L of the flexible lance. 2
- the second band 6 Since the second band 6 has a smaller width than the first band 4, in the case of central or symmetrical Anord ng of the second band 6 about a central longitudinal axis M of the first band 4 in the longitudinal direction extending edge regions 20, 22 of the flexible lance 2 single Lich formed by the first band 4. In the edge regions 20, 22 are openings 28 to m engagement of a not explicitly dargestel Leten Vorschu leg direction available.
- FIG. 2 shows a section of a longitudinal view of the first band 4 of the flexible lance 2 from FIG. 1 before joining in a longitudinal view.
- the connection points 14 are indicated by dashed lines.
- the flexible lance 2 or the first band 4 has a row 24, 26 of successively longitudinally spaced openings 28 at equidistant distances A from each other.
- the width of the openings 28 is about 2 mm, ie the length about 2.5 mm.
- the openings 28 have each other in L Lucassrichtu ng each have a distance A of about 5 mm. Due to the fact that only the first band 4 must have the openings 28 required for the advance, the manufacture is simplified and jamming of the lance 2 with the gear wheels of the advancing device is reliably prevented, in particular with small radii of curvature.
- FIG. 3 is a detail of a longitudinal view of the second band 6 of the flexible lance 2 of FIG. 1 before its connection to the first band 4 shown in a longitudinal view.
- the second band 6 has an in the finished lance 2 U-shaped Ausformu ng 8, wherein the areas 8 'form the legs of the molding.
- the second band 6 has in the longitudinal direction L successively arranged Ausappelu lengths 30, 32, which extend perpendicular to the longitudinal direction L, ie in a transverse direction Q and paral lel to each other.
- the recesses 30, 32 extend partially beyond the molding 8, ie they are present in a region of the molding 8 or of the guide groove 18 partially formed by the molding 8.
- the second band 6 or the formation 8 of recesses which are slot-shaped in the present case, u broken.
- the recesses are typically a few tenths of a millimeter wide and are laser-cut, and the distance B between the recesses 30, 32 in the longitudinal direction L to one another is approximately 1 mm.
- the second band 6 has two differently shaped recesses 30, 32.
- a first form of Ausappelu lengths hereinafter first Ausappelu lengths 30, each slit-shaped and extends on both sides and completely ig beyond the molding 8 addition.
- the first Ausappelu lengths 30 each end with a distance C in front of the edge of the second band 6.
- the first Ausformu lengths 30 have a length Li of about 20 mm.
- a second form of the recesses each extends from an edge of the second band 6 to the formation 8 and partially beyond it.
- the second formations 32 are also Schl itzförmig and have a length L 2 of about 10 mm.
- a respective edge section 34 of the second strip 6 arranged between two second recesses 32 adjacent in the longitudinal direction L has a rounded shape.
- the first recesses 30 and the second recesses 32 follow one another alternately in the longitudinal direction L, that is to say they are arranged in an alternating sequence.
- Fig. 4 the use of the flexible lance 2 for processing or inspection of a tube plate 50 of a steam generator 52 is shown, wherein only a section of the steam generator 52 is shown with tubes 54 shown in cross section.
- the tubes 54 are arranged on both sides of a tube lane 56, which is accessible from outside through a hand hole 58 in a wall 60 of the steam generator 52.
- a manipulator 62 which is only indicated schematically in FIG. 4, is introduced into the pipe outlet 56 and is movable in the direction 68 back and forth.
- the manipulator 62 includes a drive roller 64 with which the flexible lance 2 is inserted between the tubes 54.
- a processing or inspection head 66 is arranged at the free end 12 of the flexible lance 2.
- the processing or inspection head 66 is guided by movement of the flexible lance 2 in the direction 70 to the position to be examined or processed between the tubes 54.
- the flexible lance 2 can be deflected on both sides, but it is advantageous if the first band 4, which has two flat sides 16 and thus is largely planar, lies in the deflection at the inside.
- edge portion B distance edge portion 34th
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Thermal Sciences (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Endoscopes (AREA)
- Laser Beam Processing (AREA)
- Details Or Accessories Of Spraying Plant Or Apparatus (AREA)
- Nozzles (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI201630627T SI3368823T1 (sl) | 2015-10-30 | 2016-10-27 | Prožno kopje za obdelovanje ali pregledovanje cevnega dna generatorja pare |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102015118615.2A DE102015118615B3 (de) | 2015-10-30 | 2015-10-30 | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
| PCT/EP2016/075883 WO2017072209A1 (de) | 2015-10-30 | 2016-10-27 | Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3368823A1 true EP3368823A1 (de) | 2018-09-05 |
| EP3368823B1 EP3368823B1 (de) | 2019-11-13 |
Family
ID=56682754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP16788666.2A Active EP3368823B1 (de) | 2015-10-30 | 2016-10-27 | Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugers |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US11060718B2 (de) |
| EP (1) | EP3368823B1 (de) |
| CN (1) | CN108351097B (de) |
| CA (1) | CA3003609C (de) |
| DE (1) | DE102015118615B3 (de) |
| ES (1) | ES2772694T3 (de) |
| RU (1) | RU2721154C2 (de) |
| SI (1) | SI3368823T1 (de) |
| WO (1) | WO2017072209A1 (de) |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU773423A1 (ru) * | 1978-08-22 | 1980-10-23 | Государственный Союзный Завод По Механической И Химической Очистке Котельных Агрегатов "Котлоочистка" | Ручна пика дл очистки труб воздухоподогревателей котлоагрегатов от внутренних отложений |
| US4407236A (en) * | 1981-09-21 | 1983-10-04 | Combustion Engineering, Inc. | Sludge lance for nuclear steam generator |
| WO1983002657A1 (fr) * | 1982-01-25 | 1983-08-04 | Kraftwerk Union Ag | Manipulateur de passages de tuyaux, tete de pulverisation et procede de pulverisation correspondant pour la purge a haute pression d'echangeurs de chaleur |
| EP0459597A1 (de) * | 1987-03-18 | 1991-12-04 | Electric Power Research Institute, Inc | Flexible Lanze zum Entfernen von Schlamm in der Sekundärseite eines Dampferzeugers |
| US5022463A (en) * | 1990-03-08 | 1991-06-11 | Ohmstede Mechanical Services, Inc. | Multi-hose flexible lance tube cleaning system |
| US5002120A (en) * | 1990-03-08 | 1991-03-26 | Boisture Thomas B | Multi-lance tube cleaning system |
| DE59603677D1 (de) * | 1995-03-15 | 1999-12-23 | Siemens Ag | Flexible lanze zum bearbeiten oder inspizieren eines rohrbodens eines dampferzeugers |
| US6412449B1 (en) * | 1998-07-29 | 2002-07-02 | The Babcock & Wilcox Company | Segmented lance assembly |
| DE60042400D1 (de) * | 2000-02-03 | 2009-07-30 | Mitsubishi Heavy Ind Ltd | Entkalkungsvorrichtung für dampferzeuger |
| DE10006066A1 (de) * | 2000-02-10 | 2001-08-30 | Siemens Ag | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
| DE10006056A1 (de) * | 2000-02-10 | 2001-08-30 | Siemens Ag | Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers |
| EP1474679B1 (de) * | 2002-01-14 | 2011-07-27 | R. Brooks Associates, Inc. | Einrichtung zur fernuntersuchung von dampfgeneratorröhren oder zur entfernung von material von ausserhalb oder zwischen solchen röhren |
| US20090211612A1 (en) * | 2008-01-08 | 2009-08-27 | Christos Athanassiu | Super-thin water jetting lance |
| DE102013101656B4 (de) * | 2013-02-20 | 2015-04-16 | Areva Gmbh | Lanze zum Entfernen von am Rohrboden eines Dampferzeugers haftenden Ablagerungen |
| CN205868650U (zh) * | 2016-07-19 | 2017-01-11 | 四川海隆石油技术有限公司 | 弯管内壁喷涂机 |
-
2015
- 2015-10-30 DE DE102015118615.2A patent/DE102015118615B3/de active Active
-
2016
- 2016-10-27 RU RU2018119982A patent/RU2721154C2/ru active
- 2016-10-27 ES ES16788666T patent/ES2772694T3/es active Active
- 2016-10-27 SI SI201630627T patent/SI3368823T1/sl unknown
- 2016-10-27 US US15/771,860 patent/US11060718B2/en active Active
- 2016-10-27 WO PCT/EP2016/075883 patent/WO2017072209A1/de not_active Ceased
- 2016-10-27 EP EP16788666.2A patent/EP3368823B1/de active Active
- 2016-10-27 CA CA3003609A patent/CA3003609C/en active Active
- 2016-10-27 CN CN201680063654.6A patent/CN108351097B/zh active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108351097B (zh) | 2019-09-24 |
| RU2721154C2 (ru) | 2020-05-18 |
| US11060718B2 (en) | 2021-07-13 |
| CA3003609C (en) | 2023-10-31 |
| US20180347807A1 (en) | 2018-12-06 |
| ES2772694T3 (es) | 2020-07-08 |
| CN108351097A (zh) | 2018-07-31 |
| RU2018119982A (ru) | 2019-12-05 |
| DE102015118615B3 (de) | 2016-09-01 |
| RU2018119982A3 (de) | 2020-03-05 |
| EP3368823B1 (de) | 2019-11-13 |
| WO2017072209A1 (de) | 2017-05-04 |
| SI3368823T1 (sl) | 2020-03-31 |
| CA3003609A1 (en) | 2017-05-04 |
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