EP1124092B1 - Lance flexible pemettant d'effectuer des opérations ou des contrôles sur la plaque tubulaire d'un générateur de vapeur - Google Patents

Lance flexible pemettant d'effectuer des opérations ou des contrôles sur la plaque tubulaire d'un générateur de vapeur Download PDF

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Publication number
EP1124092B1
EP1124092B1 EP01101966A EP01101966A EP1124092B1 EP 1124092 B1 EP1124092 B1 EP 1124092B1 EP 01101966 A EP01101966 A EP 01101966A EP 01101966 A EP01101966 A EP 01101966A EP 1124092 B1 EP1124092 B1 EP 1124092B1
Authority
EP
European Patent Office
Prior art keywords
strip
flexible lance
flexible
longitudinal direction
tendon
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
EP01101966A
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German (de)
English (en)
Other versions
EP1124092A2 (fr
EP1124092A3 (fr
Inventor
Bruno Dipl.-Ing. Dippel
Konrad Meier-Hynek
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.)
Areva GmbH
Original Assignee
Areva NP GmbH
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 Areva NP GmbH filed Critical Areva NP GmbH
Publication of EP1124092A2 publication Critical patent/EP1124092A2/fr
Publication of EP1124092A3 publication Critical patent/EP1124092A3/fr
Application granted granted Critical
Publication of EP1124092B1 publication Critical patent/EP1124092B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/483—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers specially adapted for nuclear steam generators

Definitions

  • the invention relates to a flexible lance for processing or inspecting a tube plate of a steam generator, comprising a flexible metallic first band having a longitudinally extending first formation for receiving a supply line for a processing or inspection head arranged at the free end of the first band having.
  • the invention is therefore an object of the invention to provide a flexible lance, which is easy to manufacture and in which the supply line is still protected against damage, for example on sharp edges of the deposits formed in the steam generator.
  • the flexible lance has a flexible metallic second band, which is arranged in the longitudinal direction and connected to the first band such that the open side of the first formation of the second Band is a guide channel forming covered.
  • a largely closed guide channel can be formed, in which one or more supply lines can be securely guided against damage along the flexible lance.
  • the first band and the second band are connected to each other by a first tendon.
  • a tendon is understood to mean any flexible, in particular reversible or elastic, flexible connecting element which is extended along the longitudinal direction. With the string the bands are easily connectable without the flexibility of the lance would suffer.
  • the first band and the second band alternately abut the first string for connecting the two bands.
  • the first tendon is threaded through the first band and / or the second band.
  • the first band preferably has a first row of openings arranged one behind the other in the longitudinal direction
  • the second band has a second row of openings arranged longitudinally one behind the other.
  • the first tendon is then preferably guided through the openings of the two bands.
  • the first band is formed between its openings perpendicular to the longitudinal direction, and the second band is formed between its openings in the opposite direction. This makes it possible to guide the first chord for connecting the two bands in manufacturing technology particularly simple manner through the openings.
  • the flexible lance has a second chord spaced from the first Tendon and in the same way as this is appropriate.
  • the two tendons are preferably arranged symmetrically on both sides of the guide channel. With two tendons, the two bands are particularly secure and reliable connected to each other and the guide channel formed is particularly secure to the outside lockable.
  • the first tendon or one of the tendons has a higher bending stiffness than one of the bands or both bands together.
  • the tendon serves in this case not only as a connecting element for the two bands, but also to increase their rigidity. This avoids that the bands, especially at high feed forces, laterally buckle. This is particularly important if the supply line or one of the supply lines is an optical fiber. Such glass fibers are used to illuminate the spot to be cleaned and / or to observe. Glass fibers have the property of breaking below a certain minimum radius of curvature. Due to the increased bending stiffness of the tendon or tendons this is certainly avoided. A lateral buckling of the bands could also lead to the fact that those permanent deformations obtained. This danger is also prevented by the tendons.
  • tendon or tendons By choosing the type of tendon or tendons can be set a balance between flexibility and required stiffness of the flexible lance, largely independent of the thickness of the two bands. An increase in the strip thickness would namely at the same time increase the entire width of the flexible lance, which would adversely affect their usability in the pipe interspaces.
  • the first chord or one of the chords is designed as a wire, in particular as a spring steel wire, as a rope, in particular as a steel cable, and / or as a fiberglass element.
  • a Bowden cable can be used, which can be used in the interior guided tension and pressure cable to drive an optional on processing or inspection head recovery or gripping pliers.
  • the second band of the flexible lance in the region of the guide channel is formed.
  • the second band is formed on the other side like the first band to form the guide channel with a longitudinally extending second configuration.
  • a particularly spacious guide channel is formed.
  • the second formation is disposed over the open side of the first formation such that the formed guide channel extends, viewed in a cross-sectional plane through the bands, substantially symmetrically on both sides of the bands.
  • the first molding and optionally the second molding in the longitudinal direction of successively arranged recesses, in particular slots on.
  • slot width and slot spacing a minimum radius of curvature can be set. At the minimum radius of curvature, in which the frontal edges or surfaces of the slot openings come into contact with each other, is another Bent out of the flexible lance much more difficult, ie largely prevented lateral kinking. This enhances the effect already achieved by the tendon or the tendons.
  • a flexible lance 1 is shown, which is composed of a flexible metallic first band 3 and a flexible metallic second band 5.
  • the two bands 3, 5 are made of stainless steel with a wall thickness between about 0.1 and 0.2 mm.
  • the width b of the bands is about 30 mm.
  • the first band 3 has a first form or formation 13.
  • the second band 5 has a second formation 15 in the opposite direction.
  • the two bands 3, 5 are flush with their flat sides along their longitudinal direction connected to each other.
  • a guide channel 16 is formed by the two formations 13, 15, in the supply lines 17, 19, for example, an optical glass fiber, a capillary or a hose or an electric cable, are guided.
  • the guide channel 16 is closed on both sides by one of the bands 3, 5, so that the supply lines 17, 19 are protected against mechanical damage.
  • the two supply lines 17, 19 are arranged symmetrically on both sides of a central axis 21.
  • the two bands 3, 5 are connected by two tendons 27, 29 with each other.
  • the two tendons 27, 29 are symmetrically mounted on both sides of the central axis 21. Their mutual distance a is about 15 mm.
  • the two bands 3, 5 each alternately wrap around each of the two tendons 27, 29, so that the first band 3 and the second band 5 alternate alternately on each of the two tendons 27, 29.
  • the two bands 3, 5 are connected to each other in a much easier and more flexible manner.
  • FIG. 2 the two bands 3, 5 are shown in a longitudinal view, in a state prior to assembly to the flexible lance first
  • FIG. 2 it can be seen that the formations 13 (see also FIG. 3 ) or 15 (see also FIG. 4 ) are extended in a longitudinal direction 31 of the flexible lance 1.
  • Each of the formations 13, 15 is interrupted by slot-like recesses 33 and 35, by which is avoided that the flexible Lance 1 due to the existing formations 13, 15 is excessively stiff.
  • the distance d of the - in the longitudinal direction 31 - only a few tenths of a millimeter wide and laser-cut slot-like recesses 33, 35 is about 5 mm, the slot width about 7 mm. This results in a minimum radius of curvature of about 40 mm.
  • the bands 3, 5 are connected to each other by means of the tendons 27, 29 not shown in this figure.
  • the first band 3 has a first row 43 in the longitudinal direction equidistant rectangular openings 44 arranged one behind the other.
  • the second band 5 has a second row 45 in the longitudinal direction 31 equidistant rectangular openings 46 arranged one behind the other.
  • the areas 48 (see also FIG. 3 ) or 49 (see also FIG. 4 ) between the openings 44 and 46 of the first band 3 and the second band 5 are formed in the opposite direction.
  • the cross section of the rectangular openings 44, 46 is about 3.5 x 4.5 mm.
  • the two bands 3, 5 are in the region of their central formations 13 and 15 and with respect to their rows 43 and 45 successively arranged openings 44 and 46 substantially identical.
  • the bands 3, 5 are laid out in a quasi 180 ° phase-shifted manner one above the other. This is indicated by means of the auxiliary line 30.
  • the formed regions 48 come to lie between the openings 44 of the first band 3 in the openings 46 of the second band 5 and protrude into these openings 46.
  • the formed portions 49 project in opposite directions into the openings 44 of the first band 3.
  • a rectilinear channel for receiving the first chord 27 is formed by the formed portions 48 and 49.
  • the two tendons 27, 29 are designed as Tantens steel rope, which is stiffer than the bands 3, 5.
  • the first band 3 has rows 52, 53 of further openings which serve to engage a feed device which is not explicitly shown.
  • the second band 5 has outboard rows 54, 55 of apertures having a greater extent as compared to the apertures of the rows 52, 53 of the first band 3 in the longitudinal direction 31. This ensures that, for example, a toothed wheel of said feed device comes into contact only at the openings of the rows 52, 53 of the first band 3, which is important if, especially with a small radius of curvature, the two bands 3, 5 in the longitudinal direction 31 slightly relative to each other. Jamming the lance 1 on the gear is thus excluded.
  • FIG. 5 A second embodiment of a flexible lance 1 according to the invention is shown in FIG FIG. 5 shown.
  • the second band 5 is largely flat.
  • the second band 5 is brought into coincidence parallel and flush with the first band 3 such that the open side of the formation 13 is closed by the second band 5, so that a guide channel 16 closed on all sides for receiving supply lines not explicitly shown in this figure is formed.
  • the two bands 3, 5 are in this embodiment, connected to joints 60, for example, by spot welding, rivets, screws or similar mechanical fasteners.
  • FIG. 6 the use of the flexible lance 1 for processing or inspecting a tube plate 61 of a steam generator 63 is shown.
  • the steam generator 63 is shown only partially with tubes shown in cross section 65.
  • the tubes 65 are arranged in bundles on both sides of a pipe lane 64, which is accessible from the outside through a hand hole 66 in a wall 67 of the steam generator 63.
  • a manipulator 69 which is indicated only schematically, is introduced into the pipe lane 64 and is movable in the direction 68 back and forth. Via a drive roller 70 of the manipulator 69, the flexible lance 1 is inserted into the spaces between the tubes 65.
  • a processing or inspection head 71 attached to the end of the flexible lance can thus be brought close to the points to be cleaned or inspected between the tubes 65.
  • the lance 1 moves in the direction 72 and is unwound from an external drum, not shown.

Claims (12)

  1. Lance flexible (1) pour le traitement ou l'inspection d'une plaque tubulaire (61) d'un générateur de vapeur (63), avec une première bande métallique flexible (3) comportant un premier renfoncement (13) s'étendant dans son sens longitudinal (31), destiné à l'admission d'une conduite d'alimentation (17, 19) pour une tête de traitement ou d'inspection (71) montée à l'extrémité libre de la première bande (3),
    caractérisée par une deuxième bande métallique flexible (5) disposée dans le sens longitudinal (31) et reliée à la première bande (3) de sorte que le côté ouvert du premier renfoncement (13) est recouvert par la deuxième bande (5) en formant un canal de guidage (16).
  2. Lance flexible (1) selon la revendication 1,
    caractérisée en ce que la première bande (3) et la deuxième bande (5) sont reliées entre elles par une première corde (27).
  3. Lance flexible (1) selon la revendication 2,
    caractérisée en ce que pour relier les deux bandes (3, 5), la première bande (3) et la deuxième bande (5) s'appliquent en alternance contre la première corde (27).
  4. Lance flexible (1) selon les revendications 2 ou 3,
    caractérisée en ce que
    - la première bande (3) comporte une première rangée (43) d'ouvertures (44) disposées les unes derrière les autres dans le sens longitudinal (31),
    - la deuxième bande (5) comporte une deuxième rangée (45) d'ouvertures (46) disposées les unes derrière les autres dans le sens longitudinal (31), et
    - pour relier les bandes (3, 5), la première corde (27) est guidée à travers les ouvertures (44, 46) des deux bandes (3, 5).
  5. Lance flexible (1) selon la revendication 4,
    caractérisée en ce que la première bande (3) est renfoncée entre ses ouvertures (44) perpendiculairement au sens longitudinal (31), et
    en ce que la deuxième bande (5) est renfoncée entre ses ouvertures (46) dans le sens opposé.
  6. Lance flexible (1) selon la revendication 5,
    caractérisée en ce qu'au moins l'une des bandes (3, 5) s'introduit dans les ouvertures (46, 44) de l'autre bande (5, 3) avec ses régions renfoncées (48 ou 49).
  7. Lance flexible selon l'une des revendications 2 à 6,
    caractérisée en ce qu'une deuxième corde (29) est espacée de la première corde (27) et fixée de la même manière que celle-ci.
  8. Lance flexible (1) selon l'une des revendications 2 à 7,
    caractérisée en ce que la première corde (27) ou l'une des cordes (27, 29) est conçue comme un fil métallique, en particulier comme un fil d'acier à ressort, comme un câble, en particulier comme un câble d'acier et/ou comme un élément en fibre de verre.
  9. Lance flexible (1) selon l'une des revendications 2 à 8,
    caractérisée en ce que la première corde (27) ou l'une des cordes (27, 29) présente une plus grande rigidité à la flexion que l'une des bandes (3, 5) ou que les deux bandes (3, 5) réunies.
  10. Lance flexible (1) selon l'une des revendications 1 à 9,
    caractérisée en ce que la deuxième bande (5) est pourvue d'un deuxième renfoncement (15) s'étendant dans le sens longitudinal (31), vers le côté opposé à celui de la première bande (3), en vue de la formation du canal de guidage (16).
  11. Lance flexible (1) selon la revendication 10,
    caractérisée en ce que le deuxième renfoncement (15) est placée au-dessus du côté ouvert du premier renfoncement (13) de sorte que le canal de guidage (16) ainsi formé - vu d'un plan de section à travers les bandes (3, 5) - s'étend essentiellement de façon symétrique des deux côtés des bandes (3, 5).
  12. Lance flexible (1) selon l'une des revendications 1 à 11,
    caractérisée en ce que le premier renfoncement (13) et éventuellement le deuxième renfoncement (15) comportent des évidements (33 ou 35), en particulier des fentes, disposées les uns derrière les autres dans le sens longitudinal (31).
EP01101966A 2000-02-10 2001-01-29 Lance flexible pemettant d'effectuer des opérations ou des contrôles sur la plaque tubulaire d'un générateur de vapeur Expired - Lifetime EP1124092B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10006056 2000-02-10
DE10006056A DE10006056A1 (de) 2000-02-10 2000-02-10 Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers

Publications (3)

Publication Number Publication Date
EP1124092A2 EP1124092A2 (fr) 2001-08-16
EP1124092A3 EP1124092A3 (fr) 2002-09-11
EP1124092B1 true EP1124092B1 (fr) 2009-04-29

Family

ID=7630563

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01101966A Expired - Lifetime EP1124092B1 (fr) 2000-02-10 2001-01-29 Lance flexible pemettant d'effectuer des opérations ou des contrôles sur la plaque tubulaire d'un générateur de vapeur

Country Status (4)

Country Link
EP (1) EP1124092B1 (fr)
AT (1) ATE430287T1 (fr)
DE (2) DE10006056A1 (fr)
ES (1) ES2324392T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015118615B3 (de) * 2015-10-30 2016-09-01 Areva Gmbh Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10006066A1 (de) * 2000-02-10 2001-08-30 Siemens Ag Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2514108B1 (fr) * 1981-10-06 1986-06-13 Framatome Sa Procede et dispositif d'elimination des boues sur la plaque tubulaire des generateurs de vapeur
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 (fr) * 1987-03-18 1991-12-04 Electric Power Research Institute, Inc Lance flexible pour l'élimination des dépôts d'impuretés dans le côté secondaire d'un générateur de vapeur
US5286154A (en) * 1987-03-18 1994-02-15 Electric Power Research Institute, Inc. In bundle foreign object search and retrieval apparatus
JP3599745B2 (ja) * 1995-03-15 2004-12-08 フラマトム アンプ ゲゼルシャフト ミット ベシュレンクテル ハフツング 蒸気発生器の管床の加工あるいは点検用フレキシブルランス
WO1998044291A1 (fr) * 1997-03-28 1998-10-08 Electric Power Research Institute, Inc. Support de lance a tension variable
US6412449B1 (en) * 1998-07-29 2002-07-02 The Babcock & Wilcox Company Segmented lance assembly
DE10006066A1 (de) * 2000-02-10 2001-08-30 Siemens Ag Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015118615B3 (de) * 2015-10-30 2016-09-01 Areva Gmbh Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers
WO2017072209A1 (fr) 2015-10-30 2017-05-04 Areva Gmbh Lance flexible pour le traitement ou l'inspection d'un fond tubulaire d'un générateur de vapeur

Also Published As

Publication number Publication date
EP1124092A2 (fr) 2001-08-16
EP1124092A3 (fr) 2002-09-11
DE10006056A1 (de) 2001-08-30
ATE430287T1 (de) 2009-05-15
ES2324392T3 (es) 2009-08-06
DE50114860D1 (de) 2009-06-10

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