EP1124093B1 - Lance flexible permettant d'effectuer des opérations ou des contrôles sur la plaque tubulaire d'un générateur de vapeur - Google Patents

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

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Publication number
EP1124093B1
EP1124093B1 EP01101967A EP01101967A EP1124093B1 EP 1124093 B1 EP1124093 B1 EP 1124093B1 EP 01101967 A EP01101967 A EP 01101967A EP 01101967 A EP01101967 A EP 01101967A EP 1124093 B1 EP1124093 B1 EP 1124093B1
Authority
EP
European Patent Office
Prior art keywords
strip
flexible lance
band
flexible
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
EP01101967A
Other languages
German (de)
English (en)
Other versions
EP1124093A2 (fr
EP1124093A3 (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 EP1124093A2 publication Critical patent/EP1124093A2/fr
Publication of EP1124093A3 publication Critical patent/EP1124093A3/fr
Application granted granted Critical
Publication of EP1124093B1 publication Critical patent/EP1124093B1/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, having a flexible metallic first band and a longitudinally guided supply line for a processing or inspection head arranged at the free end of the first band.
  • a flexible lance known to guide a supply line for an inspection head and / or to guide a liquid supply line for said spraying.
  • This has a flexible metallic band, which has in its longitudinal direction successively arranged recesses through which a flexible supply line is threaded for a arranged at the free end of the tape processing or inspection head.
  • This tape has the disadvantage that it can buckle laterally, especially at a high feed force. This is of particular importance if the supply line or one of the supply lines is a capillary or an optical fiber.
  • Such glass fibers are used to illuminate the spot to be cleaned and / or to observe. Capillaries and glass fibers have the property of breaking below a certain minimum radius of curvature.
  • the invention is therefore an object of the invention to provide a flexible lance that is easy to manufacture and in which the supply line is still protected from damage by bending the lance.
  • This object is achieved in relation to the above-mentioned flexible lance according to the invention by a longitudinally arranged on the first band first chord, which has a higher bending stiffness than the band and wherein the first band is integrally formed.
  • the first tendon does not serve the supply or control of the processing or inspection head.
  • the tendon in this case is therefore available only for stiffening the metallic band.
  • the supply line is preferably a hose, a capillary, an electrical line or an optical glass fiber.
  • the stiffening of the band is particularly advantageous because these supply lines are particularly sensitive to kinking and can be easily damaged.
  • the band has between its openings perpendicular to the longitudinal direction shaped portions which extend alternately on one and the other side of the band. In this way, a largely rectilinear channel can be formed, into which the tendon can easily be inserted by threading through the openings.
  • the two tendons are preferably arranged symmetrically on both sides of the supply line. With two tendons, the band is particularly safe and reliable against kinking and also protected against twisting or twisting.
  • 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 first band and the second band are connected to each other by the first chord and optionally by the second chord.
  • the tendon is used in this case not only to increase the rigidity, but also as a connecting element of the two bands.
  • the open side of a first formation on the first band for receiving the supply line from the second band forming a guide channel is 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 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 same applies to the optional second tendon.
  • 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 same applies to the optional second tendon.
  • 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 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.
  • This ensures that the first band or optionally the second band would not be impermissibly stiff for some applications due to its particular shape or shape.
  • 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, a further deflection of the flexible lance is much more difficult, ie largely prevented lateral kinking. This enhances the effect already achieved by the tendon or the tendons.
  • the first tendon or at least one of the tendons has a higher bending stiffness than both ligaments together.
  • a flexible lance 1 is shown, which is composed of a one-piece flexible metallic first band 3 and a one-piece 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 of slot-like recesses 33rd or 35 interrupted, by which it is avoided that the flexible lance 1 is excessively stiff due to the existing formations 13, 15.
  • the distance d of the - in the longitudinal direction - 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 band 60 has a first row 62 of apertures 64 through which a first chord 27 is threaded.
  • the band 60 has a second row 66 of openings 68 through which a second chord 29 is threaded in the same way as the first chord 27.
  • the rows 62, 66 extend in the longitudinal direction 31.
  • the two tendons 27, 29 are largely straight in a simple manner in the band 60 can be inserted and connected to this.
  • the strip 60 has a third row 78 with openings 80, through which a supply line 70, in the example shown a capillary, is guided.
  • the band 60 is alternately shaped or bent out in different directions as in the rows 62, 66, so that the supply line 70 is likewise largely linearly insertable into the band 60 and comes to lie in the band plane.
  • the supply line 17 terminates at the free end of the belt 60 in a spray nozzle 82 having a processing or inspection head 171 (see also Figs FIG. 7 ).
  • FIG. 7 the use of the flexible lance 1 for processing or inspecting a tube plate 161 of a steam generator 163 is shown.
  • the steam generator 163 is shown only partially with tubes shown in cross-section 165.
  • the tubes 165 are arranged in bundles on both sides of a pipe lane 164, which is accessible from outside through a hand hole 166 in a wall 167 of the steam generator 163.
  • a manipulator 169 which is indicated only schematically, is introduced into the tube lane 164 and is movable back and forth in the direction 168. Via a drive roller 170 of the manipulator 169, the flexible lance 1 is inserted into the spaces between the tubes 165.
  • a processing or inspection head 171 attached to the end of the flexible lance can be brought close to the points to be cleaned or inspected between the tubes 165.
  • the lance 1 moves in the direction 172 and is unwound from an external drum, not shown.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)

Claims (12)

  1. Lance flexible (1) pour le traitement ou l'inspection d'une plaque tubulaire (161) d'un générateur de vapeur (163), comportant une première bande métallique flexible en un bloc (3 ; 30) et une conduite d'alimentation (17, 19) passant dessus dans le sens longitudinal (31) pour une tête de traitement ou d'inspection (171) disposée à l'extrémité libre de la première bande (3 : 60), un premier cordon (27) disposé au niveau de la première bande (3 ; 60) présentant une résistance à la flexion supérieure à celle de la bande (3 ; 60).
  2. Lance flexible (1) selon la revendication 1, caractérisée en ce que le premier cordon (27) ne sert pas à l'alimentation ou à la commande de la tête de traitement ou d'inspection (171).
  3. Lance flexible (1) selon la revendication 1 ou 2, caractérisée en ce que la conduite d'alimentation (17, 19) est un tuyau, un capillaire, un câble électrique ou une fibre de verre optique.
  4. Lance flexible (1) selon une des revendications 1 à 3, caractérisée en ce que la bande (3, 5 ; 60) présente des orifices (44, 46 ; 64) disposés les uns derrière les autres dans le sens longitudinal et dans lesquels le premier cordon (27) est enfilé.
  5. Lance flexible (1) selon la revendication 4, caractérisée en ce que la bande (60) présente entre ses orifices (64) des zones (70, 71) proéminentes perpendiculairement au sens longitudinal (31) et qui s'étendent alternativement sur l'une et l'autre face de la bande (60).
  6. Lance flexible (1) selon une des revendications 1 à 5, caractérisée par un second cordon (29) qui présente une résistance à la flexion supérieure à celle de la bande (3, 5 ; 60) et qui est installé à distance du premier cordon (27) et de la même manière que celui-ci.
  7. Lance flexible (1) selon la revendication 6, caractérisée en ce que les deux cordons (27, 29) sont disposés symétriquement par rapport à la conduite d'alimentation (17, 19).
  8. Lance flexible (1) selon une des revendications 1 à 7, caractérisée sen ce que le premier cordon (27) ou un des cordons (27, 29) est réalisé sous forme d'un fil métallique, notamment d'un fil en acier ressort, sous forme d'un câble, notamment sous forme d'un câble en acier, et/ou sous forme d'un élément en fibre de verre.
  9. Lance flexible (1) selon une des revendications 1 à 8, caractérisée par une seconde bande métallique flexible en un bloc (5) qui est disposée dans le sens longitudinal (31) et reliée à la première bande (3).
  10. Lance flexible (1) selon la revendication 9, caractérisée en ce que la première bande (3) et la seconde bande (5) sont reliées ensemble par le premier cordon (27).
  11. Lance flexible (1) selon la revendication 9 ou 10, caractérisée en ce que le côté ouvert d'une première proéminence (13) de la première bande (3) destiné à recevoir la conduite d'alimentation (17, 19) est recouvert par la seconde bande (5) en formant un canal de guidage (16).
  12. Lance flexible (1) selon une des revendications 9 à 11,
    caractérisée en ce que la seconde bande (5), pour former le canal de guidage (16), est saillant de l'autre côté comme la première bande (3) du fait d'une seconde proéminence (15) s'étendant dans le sens longitudinal (31).
EP01101967A 2000-02-10 2001-01-29 Lance flexible permettant d'effectuer des opérations ou des contrôles sur la plaque tubulaire d'un générateur de vapeur Expired - Lifetime EP1124093B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10006066A DE10006066A1 (de) 2000-02-10 2000-02-10 Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers
DE10006066 2000-02-10

Publications (3)

Publication Number Publication Date
EP1124093A2 EP1124093A2 (fr) 2001-08-16
EP1124093A3 EP1124093A3 (fr) 2003-02-19
EP1124093B1 true EP1124093B1 (fr) 2011-11-09

Family

ID=7630571

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01101967A Expired - Lifetime EP1124093B1 (fr) 2000-02-10 2001-01-29 Lance flexible permettant d'effectuer des opérations ou des contrôles sur la plaque tubulaire d'un générateur de vapeur

Country Status (4)

Country Link
EP (1) EP1124093B1 (fr)
AT (1) ATE533012T1 (fr)
DE (1) DE10006066A1 (fr)
ES (1) ES2377850T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10006056A1 (de) * 2000-02-10 2001-08-30 Siemens Ag Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers
DE102013101656B4 (de) * 2013-02-20 2015-04-16 Areva Gmbh Lanze zum Entfernen von am Rohrboden eines Dampferzeugers haftenden Ablagerungen
DE102015118615B3 (de) * 2015-10-30 2016-09-01 Areva Gmbh Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers
KR102212469B1 (ko) * 2019-04-23 2021-02-05 두산중공업 주식회사 증기발생기 검사장치

Family Cites Families (6)

* 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
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
ES2141477T3 (es) * 1995-03-15 2000-03-16 Siemens Ag Lanza flexible para realizar trabajos o inspecciones en una plataforma de tubos de un generador de vapor.
WO1998044291A1 (fr) * 1997-03-28 1998-10-08 Electric Power Research Institute, Inc. Support de lance a tension variable
DE10006056A1 (de) * 2000-02-10 2001-08-30 Siemens Ag Flexible Lanze zum Bearbeiten oder Inspizieren eines Rohrbodens eines Dampferzeugers

Also Published As

Publication number Publication date
ATE533012T1 (de) 2011-11-15
ES2377850T3 (es) 2012-04-02
EP1124093A2 (fr) 2001-08-16
DE10006066A1 (de) 2001-08-30
EP1124093A3 (fr) 2003-02-19

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