EP0120355B1 - Outil pour le nettoyage à distance des extrémités des tubes d'un faisceau tubulaire - Google Patents

Outil pour le nettoyage à distance des extrémités des tubes d'un faisceau tubulaire Download PDF

Info

Publication number
EP0120355B1
EP0120355B1 EP84102394A EP84102394A EP0120355B1 EP 0120355 B1 EP0120355 B1 EP 0120355B1 EP 84102394 A EP84102394 A EP 84102394A EP 84102394 A EP84102394 A EP 84102394A EP 0120355 B1 EP0120355 B1 EP 0120355B1
Authority
EP
European Patent Office
Prior art keywords
hollow shaft
tool
rod
lever
tube
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
Application number
EP84102394A
Other languages
German (de)
English (en)
Other versions
EP0120355A3 (en
EP0120355A2 (fr
Inventor
Manfred Häberlein
Heribert Weigl
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.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kraftwerk Union AG filed Critical Kraftwerk Union AG
Publication of EP0120355A2 publication Critical patent/EP0120355A2/fr
Publication of EP0120355A3 publication Critical patent/EP0120355A3/de
Application granted granted Critical
Publication of EP0120355B1 publication Critical patent/EP0120355B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • 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
    • F28G3/00—Rotary appliances
    • F28G3/04—Rotary appliances having brushes
    • 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
    • F28G3/00—Rotary appliances

Definitions

  • the invention relates to a tool for the remote-controlled cleaning of the outside of free pipe ends of a tube bundle in a heat exchanger with a tube plate assigned to the tube bundle, on which the tool is centered.
  • the known tool is used to repair steam generators in a nuclear power plant when the pipes are particularly attacked by corrosion and are to be replaced at least partially.
  • the invention also deals with such repairs. However, it is based on the task, not dealt with by the known person, of being able to clean the outside of the pipe ends.
  • the tool according to the invention is designed such that it has a hollow shaft which can be inserted into a tube of the tube bundle in the working position and which is closed at its free end with a conical guide tip such that the hollow shaft comprises a slot adjacent to the guide tip, that a two-armed lever is pivotally mounted in the slot, which is provided at the end facing the guide tip with a friction attachment which is pulled by a spring against a stop into the interior of the hollow shaft, that on the side of the lever facing away from the guide tip one in the longitudinal direction the hollow shaft slidable rod is arranged and that the rod with a longitudinally sectioned through the axis of the rod tip, which is laterally offset from the pivot axis of the lever, engages in a recess on the end facing away from the guide tip of the lever, the friction attachment in the working position on the longitudinal axis of the hollow shaft e shows.
  • the hollow shaft is passed through the bores of the tube sheet so that it can engage with its guide tip in the tube end above the tube sheet.
  • the two-armed lever can be pivoted with the aid of the rod, so that the end provided with the friction attachment projects beyond the circumference of the tube end.
  • the friction attachment can then rest on the outside of the pipe end. A rotation of the hollow shaft then results in the desired cleaning of the outside of the pipe end, which is advantageous for a subsequent repair, in particular for a connection to a piece of pipe to be welded on.
  • the recess provided for pivoting the two-armed lever. which cooperates with the rod is advantageously designed so that it forms an angle in longitudinal section through the hollow shaft which is greater than the angle at the tip of the rod.
  • the size of the lateral deflection of the lever can thus be controlled, as will be explained in more detail later using an exemplary embodiment. Another control possibility results from the fact that the longitudinal movement of the rod is limited by a stop on the hollow shaft.
  • the friction attachment is advantageously a steel brush. But you can also use file-like tools for cleaning or brushes with which, for example, a chemical treatment for removing corrosion layers is carried out.
  • FIG. 1 shows a section through a lower part of a steam generator for pressurized water reactors
  • FIGS. 2 and 3 show two different positions of the new tool
  • FIG. 4 is a view rotated by 90 ° of the tool shown in FIG. 3.
  • the steam generator to be processed is designated as a whole by 1. It is a U-tube steam generator, the bundle of parallel tubes 2 forms two legs 3 and 4, which end in the tube sheet 5 so that one leg 3 of one half 6 of a primary chamber delimited by the bottom 7 and the other leg 4 is assigned to the other part 8 of the primary chamber.
  • the two halves 6, 7 are delimited from one another by a partition 9 and are accessible via pipe sockets 10 and 11 serving as manholes.
  • the tubes 2 have an outer diameter of 22 mm and a wall thickness of 1.2 mm.
  • the cleaning tool according to the invention is designated as a whole by 14. It comprises a mounting base plate 15 to which a sleeve 16 is rotatably attached.
  • the cuff has at its lower end a first drive unit 17 which is supplied with drive energy, for example voltage for actuating an electric motor, via a line 18.
  • a hollow shaft 20 with an outer diameter of 21.5 mm is arranged in the sleeve 16 with a clamping connection (not shown). At its lower end, this carries a further drive motor 21, which is supplied with drive energy via a line 22. All remote functions of the tool 14 are controlled by a mobile control panel 24, which is connected to the tool 14 via a multi-core cable 25.
  • the control operates electrically in the exemplary embodiment. However, it could also be operated pneumatically by compressed air or hydraulically together with the drives 17, 21.
  • the tube sheet 5 with the bore 26 for the tube 2 ' is shown in simplified form and on a larger scale, the tube end 13 of which is to be cleaned.
  • the tool 14 in FIGS. 2 to 4 shows the hollow shaft 20 as it is guided in the bore 26 with a centering ring 27.
  • the hollow shaft 20 is closed with a conical guide tip 28.
  • the diameter of the guide tip 28 is slightly smaller than the inside diameter of the tube 2 ', so that the hollow shaft 20 is centered with the guide tip 28 in the tube end 13.
  • a two-armed lever 30 is pivotally mounted on a cross pin 31 in a slot 29 in the hollow shaft 20.
  • the arm 33 of the lever 30 facing the guide tip 28 is pulled in the position shown in FIG. 2 by a spring 35 against a stop 36, which is also designed as a transverse pin.
  • the arm 33 is longer than the radius of the hollow shaft. It can therefore be pivoted out of the slot 29 by a clockwise movement, as can be seen in FIG. 3.
  • a longitudinally displaceable rod 40 is arranged in the hollow shaft 20.
  • the rod 40 is limited in its longitudinal movement by a pin 41 which protrudes into elongated holes 42 and 43 on opposite sides of the hollow shaft.
  • the longitudinal movement is 10 mm, for example.
  • the free end 45 of the rod 40 is formed as an acute cross-section with the two legs 46 and 47.
  • the angle is 80 °.
  • Its apex 49 forming the apex engages in an also angular recess 50 of the arm 39.
  • the angle of the recess 50 is 130 ° larger than the angle of the tip 49.
  • the angle of the recess 50 with respect to the pivot axis 31 of the lever 30 arranged so that the tip 49 causes by its lateral offset with respect to the pivot axis 31, the clockwise pivoting of the lever 30, which leads from the position visible in Fig. 2 to the position shown in Fig.3.
  • This pivoting movement is limited by the stop of the bolt 41 at the upper end of the elongated holes 42 and 43. It can also be determined in that the leg 46 of the tip 45 meets the shorter leg of the angle of the recess 50.
  • the arm 33 of the lever 30 carries a steel brush attachment 52 at its free end.
  • the bristles 53 of the brush when the rod 40 is moved downward, lie on the outside of the tube end 13 with a force given by the spring 35 a rotation of the hollow shaft 20 determined by the drive 21, which is indicated in FIG. 3 by the arrow 55. cleaning the pipe end 13 made. After this cleaning, the hollow shaft 20 can be moved down. Then the lever 33 returns under the action of the spring 35 into the recess 37 as soon as the bristles 53 have passed the edge of the tube end. The hollow shaft 20 can thus be extended freely through the bore of the tube sheet 5.
  • the Figure 4 shows that the slot 29 has a rectangular cross section, i. H. flat walls. It also shows that the tip 45 of the rod 40 has flat boundary surfaces. Likewise, the surfaces forming the recess 50 are also designed as a plane.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning In General (AREA)

Claims (4)

1. Outil pour le nettoyage télécommandé des parties extérieures des extrémités libres des tubes d'un faisceau tubulaire d'un échangeur de chaleur, ayant une plaque tubulaire qui est associée au faisceau tubulaire et sur laquelle l'outil est centré, caractérisé en ce que l'outil comporte un arbre creux (20) qui, en position de travail, peut être introduit dans un tube (2) du faisceau tubulaire et dont l'extrémité libre est fermée par une pointe conique de guidage (21), en ce que l'arbre creux (20) comprend une fente (29) à proximité de la pointe de guidage (28), en ce que dans la fente (29) est monté basculant un levier à deux bras (30), qui, à l'extrémité tournée vers la pointe de guidage (28), est muni d'une garniture de friction (52) et qui est tiré par un ressort (35), contre une butée (36), à l'intérieur de l'arbre creux (20), en ce que sur le côté du levier (30), éloigné de la pointe de guidage (28), est disposée une tige (40) pouvant coulisser suivant la direction longitudinale de l'arbre creux (20) et en ce que la tige (40) pénètre, par une pointe angulaire (45) en coupe longitudinale par l'axe de la tige (40) et qui est décalée latéralement par rapport à l'axe de basculement (31) du levier (30), dans un évidement (50) ménagé à l'extrémité (39) du levier (30), qui est éloignée de la pointe de guidage (28), la garniture de friction (52) étant, en position de travail, dirigée vers l'axe longitudinal de l'arbre creux (20).
2. Outil suivant la revendication 1, caractérisé en ce que le creux (50) forme suivant la coupe longitudinale de l'arbre creux (20) un angle qui est plus grand que l'angle de la pointe (45) de la tige (40).
3. Outil suivant la revendication 1 ou 2, caractérisé en ce que le déplacement longitudinal de la tige (40) est limité par une butée (41, 42, 43) prévue sur l'arbre creux (20).
4. Outil suivant la revendication 1, 2 ou 3, caractérisé en ce que la garniture de friction est une brosse métallique (52).
EP84102394A 1983-03-22 1984-03-06 Outil pour le nettoyage à distance des extrémités des tubes d'un faisceau tubulaire Expired EP0120355B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833310325 DE3310325A1 (de) 1983-03-22 1983-03-22 Werkzeug zum fernbedienbaren reinigen der rohrenden eines rohrbuendels
DE3310325 1983-03-22

Publications (3)

Publication Number Publication Date
EP0120355A2 EP0120355A2 (fr) 1984-10-03
EP0120355A3 EP0120355A3 (en) 1985-04-17
EP0120355B1 true EP0120355B1 (fr) 1986-11-12

Family

ID=6194272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102394A Expired EP0120355B1 (fr) 1983-03-22 1984-03-06 Outil pour le nettoyage à distance des extrémités des tubes d'un faisceau tubulaire

Country Status (2)

Country Link
EP (1) EP0120355B1 (fr)
DE (2) DE3310325A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2202749C1 (ru) * 2001-08-20 2003-04-20 Воронежская государственная архитектурно-строительная академия Теплообменник
DE102010039413B4 (de) * 2010-08-17 2012-03-29 Areva Np Gmbh Verfahren und Vorrichtung zur Entnahme einer Probe aus einem Dampferzeuger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231696A (en) * 1978-06-14 1980-11-04 Westinghouse Electric Corp. Multi-function end effector
US4262402A (en) * 1978-10-18 1981-04-21 Westinghouse Electric Corp. Method for servicing a steam generator
DE3029811A1 (de) * 1980-08-06 1982-02-18 Kraftwerk Union AG, 4330 Mülheim Manipulator zur fernbedienbaren inspektion und gegebenenfalls reparatur von waermtauscherrohren
US4369662A (en) * 1981-02-25 1983-01-25 Westinghouse Electric Corp. Plug installation apparatus
FR2504306A1 (fr) * 1981-04-17 1982-10-22 Framatome Sa Dispositif de mise en place et d'extraction d'un moyen de controle ou d'un outil dans un equipement recepteur

Also Published As

Publication number Publication date
EP0120355A3 (en) 1985-04-17
DE3461337D1 (en) 1987-01-02
EP0120355A2 (fr) 1984-10-03
DE3310325A1 (de) 1984-09-27

Similar Documents

Publication Publication Date Title
DE2032406C3 (de) Vorrichtung zum Bohren von Löchern durch Bauelemente
DE2930853C2 (de) Zahnärztliches Handstück mit einem Ventil zur Steuerung des Durchflusses eines strömenden Mediums
DE3328605C2 (de) Handstück zur Zahnsteinentfernung
DE3029811A1 (de) Manipulator zur fernbedienbaren inspektion und gegebenenfalls reparatur von waermtauscherrohren
DE1965665A1 (de) Autozentrierende Zangenvorrichtung zur Zusammensetzung von Rohren
DE2458876A1 (de) Rohrverbindung
DE3300460C2 (de) Vorrichtung zur Prüfung und/oder zur Reparatur von Dampferzeugerrohren
EP0120355B1 (fr) Outil pour le nettoyage à distance des extrémités des tubes d'un faisceau tubulaire
DE7811884U1 (de) Rohrabschneider mit einer ueber einen handgriff und einen spindeltrieb nachstellbaren schneideinrichtung
DE2644865C3 (de) Tragbarer, kraftbetriebener Rohrschlüssel
EP0717666B1 (fr) Porte-brosse reglable en continu
DE3208844C2 (fr)
EP0123076B1 (fr) Dispositif pour tronçonner un tube dans un faisceau de tubes se terminant dans une plaque de fond
DE9216760U1 (de) Markiergerät zum Anbringen von Markierungen an Rohrmänteln
DE20113238U1 (de) Handwerkzeug mit einem elektrohydraulischen Antriebsteil und einem Arbeitskopf
DE684568C (de) Vorrichtung zum Verdichten von vorgeformten Rohren, Rohrfuttern oder aehnlichen Hohlkoerpern aus Zement oder sonstigen bildsamen Massen
DE2951715C2 (de) Vorrichtung zum Kaltangeln von Rohren
DE3346420C2 (de) Scherenartige Punktschweißzange für Roboter
DE955834C (de) Vorrichtung zum Entfernen des inneren Schweissbartes bei stumpfgeschweissten Stahlrohren
DE519436C (de) Vorrichtung zum Befestigen von Rohren in Flanschen
DE670959C (de) Fangvorrichtung fuer den Tiefbohrbetrieb
DE102022108066A1 (de) Vorrichtung zur Führung und Auslenkung eines Bohrfräsers zur Herstellung eines hinterschnittenen Bohrlochs
WO2025093099A1 (fr) Procédé de fraisage de façade de la surface d'extrémité d'une extrémité d'un tube
DE836479C (de) Zange oder aehnliches Werkzeug
DE102014110784A1 (de) Vorrichtung zum Entfernen von Verbindungselementen aus Werkstücken

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR SE

17P Request for examination filed

Effective date: 19850306

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR SE

REF Corresponds to:

Ref document number: 3461337

Country of ref document: DE

Date of ref document: 19870102

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19900321

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19900323

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19900528

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19910307

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19911129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 84102394.8

Effective date: 19911009