EP0307943A1 - Dispositif pour introduire un outil dans un échangeur de chaleur - Google Patents

Dispositif pour introduire un outil dans un échangeur de chaleur Download PDF

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Publication number
EP0307943A1
EP0307943A1 EP88115221A EP88115221A EP0307943A1 EP 0307943 A1 EP0307943 A1 EP 0307943A1 EP 88115221 A EP88115221 A EP 88115221A EP 88115221 A EP88115221 A EP 88115221A EP 0307943 A1 EP0307943 A1 EP 0307943A1
Authority
EP
European Patent Office
Prior art keywords
yoke
fingers
clamping
heat exchanger
tensioning
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.)
Withdrawn
Application number
EP88115221A
Other languages
German (de)
English (en)
Inventor
Bernd Dipl.-Ing. Richter
Ulrich Rittler
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0307943A1 publication Critical patent/EP0307943A1/fr
Withdrawn legal-status Critical Current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
    • F22B37/002—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

Definitions

  • the invention relates to a device and a method for introducing and / or positioning a device, in particular a manipulator, into a chamber of a heat exchanger.
  • a test device for the tubes of a heat exchanger is known, which is assigned a device for introduction into the chamber of the heat exchanger accessible through a manhole.
  • This device comprises a rail with a slide movable thereon so that testing and repair devices in the form of probes, which are supplied with a hose, can be brought to the tube plate of the heat exchanger.
  • a flange is used to fasten the rail, which is screwed to the manhole.
  • the end of the rail projecting into the chamber of the heat exchanger is fixed to the tube sheet by at least one centering mandrel. Due to the rail leading into the chamber and its holder, the clear width of the manhole is narrowed, so that larger devices are very difficult to insert.
  • the invention has for its object to provide a device for inserting and / or positioning a device in / in the chamber of a heat exchanger, with which a simple and quick insertion, in particular a manipulator, is possible without the free opening of the manhole noticeable is narrowed. Furthermore, a method for introducing and / or positioning a device in / in a heat exchanger with restricted access paths is to be specified.
  • the first-mentioned object is achieved according to the invention by a device in which at least three remotely operable clamping fingers are arranged on a mounting yoke that can be manually inserted into the chamber with a mounting rod and locked in heat exchanger tubes, of which a clamping finger is arranged at least approximately in the middle of the yoke with the interposition of a lifting cylinder and of which at least one additional tension finger is detachably held on the two yoke ends by means of a remotely operable clamping device, the end of a toothed belt being connected to the further tension fingers arranged on the yoke ends and the toothed belts being in engagement with a toothed belt transmission of two synchronously controllable elevators, on which support elements and releasable connecting means for the device are arranged.
  • an operator only needs to insert a relatively light yoke with the mounting rod - without entering the chamber - from the outside through the manhole into the chamber, bringing it to the tube plate and the central clamping finger - without looking into the chamber - to be inserted into any heat exchanger tube and to be braced by remote control.
  • the lifting cylinder of the central clamping finger can be rotatably mounted on the mounting yoke. This makes it possible to bring the assembly yoke into a desired position on the tube sheet before bracing the additional tension fingers arranged at the ends (for example by means of the assembly rod).
  • the clamping fingers arranged at the ends of the mounting yoke can then be inserted into a heat exchanger tube. They are then clamped in it, by means of the associated remote-controlled spreading or tensioning devices.
  • Alignment of the yoke can advantageously also be carried out remotely if the piston rod of the lifting cylinder is connected to an electric drive motor via a mechanical transmission.
  • the yoke can be removed by loosening the clamping devices of the (still tensioned) tensioning fingers located on the yoke ends and the expanding or tensioning device of the centrally arranged tensioning fingers. It can be removed with the assembly rod so that only the two tension fingers with the toothed belt remain clamped in the heat exchanger tubes.
  • the device to be inserted into the chamber is then retracted onto this toothed belt with the aid of the toothed belt transmission and clamped in the heat exchanger tubes by means of additional tensioning fingers arranged on the device and by means of associated spreading or tensioning devices.
  • the tensioning fingers with the toothed belt can be removed from the tube sheet after the associated expansion or tensioning devices have been released.
  • a mounting yoke 1 is used to insert a device (e.g. 21 in FIG. 5), in particular a manipulator, into a chamber of a heat exchanger, as shown in FIG. 1.
  • a device e.g. 21 in FIG. 5
  • a manipulator e.g. 21 in FIG. 5
  • At least three remotely operable clamping fingers 2, 3, 4 are arranged on this.
  • the clamping finger 2 is provided centrally and at least approximately in the middle of the yoke.
  • the central clamping finger 2 is rotatably arranged with the interposition of a lifting cylinder 5 with a piston 6 via a piston rod 7 on the yoke 1 via roller bearings 8.
  • the lifting cylinder 5 can be actuated via pressure medium lines 5a, 5b.
  • At least one additional clamping finger 3 or 4 is detachably held by a remotely operable clamping device 9, to which pressure medium lines 9a are guided.
  • the further clamping fingers 3, 4 are detachably connected to the two yoke ends via clamping devices 9.
  • the clamping fingers 2, 3, 4 each have a known clamping device (not designated) for clamping, which is actuated by a pressure medium.
  • the pressure medium is supplied via a pressure medium line 10; it enables the spreading fingers 2, 3, 4 to be individually locked or braced in the heat exchanger tubes 11.
  • a toothed belt 19 or 20 is attached to each of the two further end tensioning fingers or pairs of tensioning fingers.
  • the toothed belts 19 and 20 are in principle on the end tensioning fingers 3 or 4 arranged in any way. They are carried by the tension fingers 3 and 4 when lifting or lowering.
  • FIG. 2 shows a chamber of a heat exchanger 12, the upper side of which is delimited by the tube sheet 11R, into which the heat exchanger tubes 11 open.
  • the underside of the chamber is closed by a hemispherical base 13 in which a manhole 14 is provided.
  • Devices and devices such as manipulator, tools, test devices and the like can be introduced through the manhole 14.
  • the assembly yoke 1 is first inserted (manually) by an operator through the manhole 14 using an assembly rod 15.
  • the middle clamping finger 2 is inserted into an arbitrarily selected heat exchanger tube 11 when the cylinder 5 is extended.
  • the mounting rod 15 has at the free end a remotely operable, in particular actuatable by a pressure medium gripping device 15a, with which it firmly engages around part of the mounting yoke 1, in particular the head of the cylinder 5.
  • An end contact 2a is provided on the central clamping finger 2. This end contact 2a triggers an automatic tensioning of the central clamping finger 2 when the end contact 2a comes to rest on the tube sheet 11R after the insertion of the clamping finger 2 into a heat exchanger tube 11.
  • the mounting yoke 1 is now brought into a desired position on the tube sheet 11R. For this purpose, it is rotated around the central clamping finger 2 in the direction of the tube rows (connecting line of the tube centers in the X direction), ie parallel to the tube lane, until the the two outer clamping fingers 3, 4 or pairs of clamping fingers arranged on the support yoke are under two or four heating tube openings.
  • This can be done using the mounting rod 15.
  • it can also be done via a remotely controllable electric drive motor 16, which is connected to the piston rod 7 of the lifting cylinder 5 via a gear designed as a pinion 17 and gear 18.
  • the clamping fingers 2, 3, 4 are at a mutual distance which is an integral multiple of the distance between two heat exchanger tubes 11. (This also applies to the clamping fingers 22 to 25 described below).
  • End contacts 2a can again be provided on the yoke 1 or on the clamping fingers 3, 4 for automatically triggering the tensioning.
  • the individual clamping fingers 2, 3, 4 can have spreading devices made of rubber or metal, in a known embodiment.
  • the device 21 to be introduced which is designed as a finger walker according to FIG. 5, has a walking mechanism with a number of clamping fingers 22, 23, 24, 25 and supply and control lines which are accommodated in a flexible tube 21a.
  • the device's own clamping fingers 22 to 25 can be used like the clamping fingers 2, 3, 4 be formed; they also have corresponding spreading devices for bracing.
  • the device 21 is releasably attached to two elevators 26, 27, each of which is equipped with a toothed belt transmission 28 and can be controlled synchronously.
  • the toothed belt drives 28 are assigned guides 29 which are tubular. Carrying elements 30a and connecting means 30b for releasably holding the device 21 are arranged on the guides 29.
  • the toothed belt transmissions 28 are connected in a torque-locking manner to synchronously controllable electric drive motors 31, which are connected to electrical supply and control lines 32.
  • the elevators 26, 27, which are designed as electric lifting mechanisms, carry the device 21 through the manhole 14 to below the tube plate 11R until the device's own clamping fingers 22 and 25 protrude sufficiently deep into the heat exchanger tubes 11 and can be clamped there.
  • End contacts 2a can also be provided on the tensioning fingers 22 to 25 of the device 21, each of which triggers an automatic tensioning of the tensioning fingers 22 to 25 after complete insertion.
  • the elevators 26, 27 together with the flexible toothed belts 19, 20 can be removed from the tube sheet 11R by simply releasing the tension fingers 3, 4 and by releasing the connecting means 30b.
  • the device 21 is thus anchored to the tube sheet 11R alone and is in its starting position.
  • the installation and removal process can be carried out by just one person from outside the manhole 14 in a few minutes.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manipulator (AREA)
EP88115221A 1987-09-18 1988-09-16 Dispositif pour introduire un outil dans un échangeur de chaleur Withdrawn EP0307943A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8712638U 1987-09-18
DE8712638U DE8712638U1 (de) 1987-09-18 1987-09-18 Vorrichtung zum Einbringen eines Gerätes in einen Wärmetauscher

Publications (1)

Publication Number Publication Date
EP0307943A1 true EP0307943A1 (fr) 1989-03-22

Family

ID=6812217

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88115221A Withdrawn EP0307943A1 (fr) 1987-09-18 1988-09-16 Dispositif pour introduire un outil dans un échangeur de chaleur

Country Status (4)

Country Link
US (1) US4924933A (fr)
EP (1) EP0307943A1 (fr)
JP (1) JPH01107002A (fr)
DE (1) DE8712638U1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5286154A (en) * 1987-03-18 1994-02-15 Electric Power Research Institute, Inc. In bundle foreign object search and retrieval apparatus
FR2645328B1 (fr) * 1989-04-04 1991-07-19 Framatome Sa Dispositif de centrage d'un outil d'intervention dans un tube de generateur de vapeur
FR2647251B1 (fr) * 1989-05-16 1991-08-23 Intercontrole Sa Appareil pour le positionnement d'un organe dans une cavite cylindrique comportant des perforations disposees selon un reseau regulier
US7314343B2 (en) * 2002-07-22 2008-01-01 Westinghouse Electric Co. Llc Miniature manipulator for servicing the interior of nuclear steam generator tubes
US7533715B1 (en) * 2003-09-26 2009-05-19 Areva Np Inc. Tube walker for examination and repair of steam generators
JP5314609B2 (ja) * 2010-01-27 2013-10-16 三菱重工業株式会社 水室内作業装置
CN106643279B (zh) * 2016-12-29 2018-09-11 广西恩康机械设备有限公司 列管换热器的自动清洗方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394374A2 (fr) * 1977-06-15 1979-01-12 Framatome Sa Dispositif de positionnement selectif d'un organe sur une plaque tubulaire
EP0064436A1 (fr) * 1981-04-17 1982-11-10 Framatome Dispositif d'introduction ou d'extraction d'organe dans un générateur de vapeur
EP0066791A1 (fr) * 1981-06-06 1982-12-15 BROWN BOVERI REAKTOR GmbH Dispositif de mise en oeuvre de travaux d'inspection sur un échangeur de chaleur pour réacteur nucléaire et procédé de mise en place du dispositif dans la chambre de l'échangeur de vapeur
FR2527308A1 (fr) * 1982-05-19 1983-11-25 Intercontrole Sa Dispositif pour l'introduction d'un mobile de positionnement d'un organe sur une plaque tubulaire
FR2566309A1 (fr) * 1984-06-22 1985-12-27 Barras Provence Dispositif pour positionner selectivement un outil porte par un vehicule se deplacant sur la plaque perforee d'un faisceau de tubes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457741A1 (fr) * 1979-05-31 1980-12-26 Framatome Sa Porte-outil mobile pour travail sur une plaque tubulaire
US4804038A (en) * 1983-10-11 1989-02-14 The Babcock & Wilcox Company Remotely installed, operated and removed manipulator for steam generator
US4638667A (en) * 1984-01-20 1987-01-27 Westinghouse Electric Corp. Remote probe positioning apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394374A2 (fr) * 1977-06-15 1979-01-12 Framatome Sa Dispositif de positionnement selectif d'un organe sur une plaque tubulaire
EP0064436A1 (fr) * 1981-04-17 1982-11-10 Framatome Dispositif d'introduction ou d'extraction d'organe dans un générateur de vapeur
EP0066791A1 (fr) * 1981-06-06 1982-12-15 BROWN BOVERI REAKTOR GmbH Dispositif de mise en oeuvre de travaux d'inspection sur un échangeur de chaleur pour réacteur nucléaire et procédé de mise en place du dispositif dans la chambre de l'échangeur de vapeur
FR2527308A1 (fr) * 1982-05-19 1983-11-25 Intercontrole Sa Dispositif pour l'introduction d'un mobile de positionnement d'un organe sur une plaque tubulaire
FR2566309A1 (fr) * 1984-06-22 1985-12-27 Barras Provence Dispositif pour positionner selectivement un outil porte par un vehicule se deplacant sur la plaque perforee d'un faisceau de tubes

Also Published As

Publication number Publication date
DE8712638U1 (de) 1987-12-10
JPH01107002A (ja) 1989-04-24
US4924933A (en) 1990-05-15

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