EP0385219A2 - Bouchon de réparation et méthode pour son introduction dans le tube d'un échangeur de chaleur - Google Patents

Bouchon de réparation et méthode pour son introduction dans le tube d'un échangeur de chaleur Download PDF

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Publication number
EP0385219A2
EP0385219A2 EP90103157A EP90103157A EP0385219A2 EP 0385219 A2 EP0385219 A2 EP 0385219A2 EP 90103157 A EP90103157 A EP 90103157A EP 90103157 A EP90103157 A EP 90103157A EP 0385219 A2 EP0385219 A2 EP 0385219A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger tube
repair insert
sleeve
nut
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Withdrawn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
EP90103157A
Other languages
German (de)
English (en)
Other versions
EP0385219A3 (fr
Inventor
Walter Dipl.-Ing. Vanselow
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 EP0385219A2 publication Critical patent/EP0385219A2/fr
Publication of EP0385219A3 publication Critical patent/EP0385219A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F11/00—Arrangements for sealing leaky tubes and conduits
    • F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49352—Repairing, converting, servicing or salvaging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49361—Tube inside tube
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49732—Repairing by attaching repair preform, e.g., remaking, restoring, or patching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49718—Repairing
    • Y10T29/49732—Repairing by attaching repair preform, e.g., remaking, restoring, or patching
    • Y10T29/49739—Mechanically attaching preform by separate fastener
    • Y10T29/49741—Screw threaded fastener
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining
    • Y10T29/49908—Joining by deforming
    • Y10T29/49938—Radially expanding part in cavity, aperture, or hollow body
    • Y10T29/4994—Radially expanding internal tube

Definitions

  • the invention relates to a repair insert for a heat exchanger tube with a sleeve through which a tubular base body protrudes on both sides, the base body being supported at the end with its head part on the sleeve and provided at the other end with a thread and a nut for bracing in the heat exchanger tube is.
  • the invention also relates to a method for inserting such a repair insert into a heat exchanger tube.
  • the invention has for its object to eliminate the disadvantages mentioned above and to provide a repair insert that is simple to manufacture and safe in operation. A suitable procedure should also be specified for inserting the repair insert.
  • the first-mentioned object is achieved in that at least one slip ring is arranged at one end between the sleeve and the head part and at the other end between the sleeve and the nut, which - starting from its relaxed, conical shape - can be converted into a flattened shape and enlarged in diameter by relative movement between the base body and the sleeve.
  • a method is provided according to the invention in which the repair insert is inserted into the heat exchanger tube, after which the nut is tightened by means of a tool, so that the slip ring is enlarged axially, as a result of which a force-fitting, largely liquid-tight connection is made.
  • slip rings 15 have a frustoconical (conical) shape on average. By compressing in the axial direction, the slip rings 15 can be enlarged in their diameter. This compression takes place in the present repair insert 1 by tightening the nut 13.
  • the nut 13 can, for example, as shown, be designed as a hexagon nut. Tightening is then done with a ring spanner tool. Other configurations are also possible, for example as a slotted nut or provided with holes or recesses. With a suitable tool, the tightening can also be carried out from outside the end of the tube 3 in this case.
  • the head part 9 is designed as a flange with an annular support surface 10.
  • great tensioning forces can be achieved with the repair insert 1.
  • spacer rings 17 e.g. B. at each end three slip rings 15, 15a, 15b provided.
  • the repair insert 1 per slip ring 15, 15a, 15b exerts less force on the heat exchanger tube 3 with the same tension than in the case with only one slip ring 15.
  • a support ring 19 can also be provided at each end.
  • two elastically deformable slip rings 15a, 15b are provided at the ends, which are offset from one another by 180 ° in their relaxed conical shape (cf. also FIG. 3).
  • the repair insert 1 is dimensioned such that, on the one hand, the sleeve 5 and the spacer rings 17 are not deformed during tensioning and, on the other hand, the base body 7 is as large as possible in its inner diameter so that the flow of the medium 18 is hampered as little as possible.
  • two slip rings 15c are advantageously arranged directly next to one another on the head part 9.
  • the repair insert 1 has a particularly good sealability.
  • the slip rings 15c can be made particularly thin and with a large inner diameter, which allows the inner diameter of the repair insert 1 to be enlarged.
  • two slip rings 15a, 15b in their relaxed, conical shape are offset from one another by 180 °. They are arranged lying apart between the sleeve 5 and the spacer ring 17. When such an arrangement is clamped, axial forces between the repair insert 1 and the heat exchanger tube 3 are eliminated and a particularly uniform distribution of forces is achieved. Spacer rings can also be saved.
  • inverted rings 15a, 15b which can also be referred to as V-shaped in section, can also be achieved with simple means by using only a single inverted ring 15e which is designed in the manner of two conical inverted rings arranged opposite one another is. This is advantageous if particularly high holding forces are to be achieved in the heat exchanger tube 3.
  • the V-shape of the slip ring 15e or the slip rings 15a, 15b can optionally point outwards or inwards. Arrangements of the slip rings 15, 15a, 15b, 15c, 15e can also be provided, which go beyond the representations shown here.
  • the means can be implemented, for example, as an Allen key 21 (see FIG. 3).
  • the nut 13 as already mentioned above, is provided with a slot 24 which allows the engagement of a suitable tool for tightening or loosening the nut 13.
  • the means are also possible, for example as an internal thread 23, as shown in FIGS. 1 and 2.
  • the nut 13 can also be provided with bores 25 which allow the engagement of a mandrel-like tool.
  • the means can optionally be provided at the top and / or at the end - also in different designs.
  • the present repair insert 1 is easy to manufacture. It is still inexpensive to manufacture. It enables the assembly times to be shortened, which in turn results in a reduced radiation exposure of the personnel when exposed to radiation Heat exchanger tubes 3 of a nuclear power reactor are to be repaired. Since no heat is introduced into the material of the repair insert 1 or the heat exchanger tube 3 by welding or soldering in the present repair insert 1, this results in a low susceptibility to corrosion. In addition, the repair insert 1 can be removed and used several times. A special cleaning of the heat exchanger tube 3 before inserting the repair insert 1 is not necessary.
  • repair insert 1 When using the repair insert 1 in the area of a heat exchanger near the bottom, a combination of bracing and welding or soldering technology is also conceivable.
  • the repair insert 1 can be clamped in the upper, inaccessible area of the heat exchanger tube 3 and fastened at the lower end by means of a welding or soldering process.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP19900103157 1989-03-03 1990-02-19 Bouchon de réparation et méthode pour son introduction dans le tube d'un échangeur de chaleur Withdrawn EP0385219A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8902572U 1989-03-03
DE8902572U DE8902572U1 (de) 1989-03-03 1989-03-03 Reparatureinlage für ein Wärmetauscherrohr

Publications (2)

Publication Number Publication Date
EP0385219A2 true EP0385219A2 (fr) 1990-09-05
EP0385219A3 EP0385219A3 (fr) 1990-10-31

Family

ID=6836655

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900103157 Withdrawn EP0385219A3 (fr) 1989-03-03 1990-02-19 Bouchon de réparation et méthode pour son introduction dans le tube d'un échangeur de chaleur

Country Status (3)

Country Link
US (1) US5079837A (fr)
EP (1) EP0385219A3 (fr)
DE (1) DE8902572U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022167751A1 (fr) * 2021-02-02 2022-08-11 Etablissements Saint Germain Et Straub Equipement et procédé de tubage

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US6712154B2 (en) * 1998-11-16 2004-03-30 Enventure Global Technology Isolation of subterranean zones
US6634431B2 (en) * 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
GB2384502B (en) * 1998-11-16 2004-10-13 Shell Oil Co Coupling an expandable tubular member to a preexisting structure
US6557640B1 (en) * 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US7231985B2 (en) * 1998-11-16 2007-06-19 Shell Oil Company Radial expansion of tubular members
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US7185710B2 (en) * 1998-12-07 2007-03-06 Enventure Global Technology Mono-diameter wellbore casing
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AU2002318438A1 (en) * 2001-07-06 2003-01-21 Enventure Global Technology Liner hanger
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US7513313B2 (en) * 2002-09-20 2009-04-07 Enventure Global Technology, Llc Bottom plug for forming a mono diameter wellbore casing
WO2003042486A2 (fr) * 2001-11-12 2003-05-22 Enventure Global Technology Cone de dilatation retractable
US7775290B2 (en) 2003-04-17 2010-08-17 Enventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
US20050217866A1 (en) * 2002-05-06 2005-10-06 Watson Brock W Mono diameter wellbore casing
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US7290605B2 (en) * 2001-12-27 2007-11-06 Enventure Global Technology Seal receptacle using expandable liner hanger
WO2004018824A2 (fr) * 2002-08-23 2004-03-04 Enventure Global Technology Impulsion magnetique appliquee sur un manchon et procede de formation d'un tubage de puits de forage
WO2004027786A2 (fr) * 2002-09-20 2004-04-01 Enventure Global Technology Manchon protecteur conçu pour des tuyaux extensibles
BRPI0307686B1 (pt) * 2002-02-15 2015-09-08 Enventure Global Technology aparelho para formar um revestimento do furo de poço em um furo de sondagem, método e sistema para formar um revestimento de furo de poço em uma formação subterrânea, e, revestimento de furo de poço posicionado em um furo de sondagem dentro de uma formação subterrânea
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EP0181250A1 (fr) * 1984-11-06 1986-05-14 Framatome Procédé de réparation par chemisage d'un tube d'un générateur de vapeur et chemise de réparation de ce tube
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022167751A1 (fr) * 2021-02-02 2022-08-11 Etablissements Saint Germain Et Straub Equipement et procédé de tubage

Also Published As

Publication number Publication date
US5079837A (en) 1992-01-14
DE8902572U1 (de) 1990-07-05
EP0385219A3 (fr) 1990-10-31

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