EP0564327B1 - Device to crimp a tube in a plate - Google Patents

Device to crimp a tube in a plate Download PDF

Info

Publication number
EP0564327B1
EP0564327B1 EP19930400769 EP93400769A EP0564327B1 EP 0564327 B1 EP0564327 B1 EP 0564327B1 EP 19930400769 EP19930400769 EP 19930400769 EP 93400769 A EP93400769 A EP 93400769A EP 0564327 B1 EP0564327 B1 EP 0564327B1
Authority
EP
European Patent Office
Prior art keywords
tube
crimping
plate
volume
probe
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
EP19930400769
Other languages
German (de)
French (fr)
Other versions
EP0564327A1 (en
Inventor
Guy Perruchas
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.)
Direction General pour lArmement DGA
Etat Francais
Original Assignee
Direction General pour lArmement DGA
Etat Francais
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 Direction General pour lArmement DGA, Etat Francais filed Critical Direction General pour lArmement DGA
Publication of EP0564327A1 publication Critical patent/EP0564327A1/en
Application granted granted Critical
Publication of EP0564327B1 publication Critical patent/EP0564327B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/08Tube expanders
    • B21D39/20Tube expanders with mandrels, e.g. expandable
    • B21D39/203Tube expanders with mandrels, e.g. expandable expandable by fluid or elastic material

Definitions

  • the present invention relates to a hydraulic crimping device for a tube in a tube plate, for example of a heat exchanger or a steam generator intended more particularly for civil and military nuclear boilers.
  • the crimping of a tube into a very thick plate makes it possible to fix the tube in the plate in order to ensure good mechanical strength of the tube in this plate. It has the consequence of eliminating the gap between the tube and the plate and therefore ensuring the seal between the tube and the plate.
  • the object of the invention is to provide a device or probe for crimping a tube by hydraulic means which makes it possible to control the axial shortening of the tube in the crimped area, without recourse to external means.
  • the invention relates to a hydraulic crimping device for a tube in a tube plate having bores, for example for a heat exchanger or steam generator, characterized in that it has a double supply of pressure fluid and two volumes crimping defined by seals, pressurizing a first volume carrying out a first crimping bearing, pressurizing the two volumes carrying out crimping the tube on the remaining part of the thickness of the plate.
  • FIG. 1 shows the assembly of the crimping tool: external pressure fluid supply system 1, adapter 2, stop 3, probe 4, anti-extrusion systems for the seals 5, seals 6, 7, 8 as well as the tube 9 to be crimped in the thickness of the plate 10, the 2 sides of which are referenced F1 and F2.
  • the joints 6 and 7 delimit with the tube 9 and the probe 4 an annular volume V2 while the joints 7 and 8 form with the tube 9 and the probe 4 an annular volume V1.
  • the probe 4 is introduced into the tube 9 either manually or automatically.
  • FIG. 2 shows the pressurization of the volume V1 and therefore the production of the crimping bearing on the side F2 of the plate.
  • the fluid is introduced through the inlet A of the adapter, travels through the channel 11, spreads into the volume V1 and produces a first crimping bearing corresponding to the annular volume V1 delimited by the seals 7 and 8 which ensure the seal.
  • This first crimping bearing ensures the axial freezing of the tube 9 in the plate bore.
  • FIG. 3 shows the pressurization of the volumes V1 and V2 and therefore the complete crimping of the tube 9 in the thickness of the plate 10.
  • the complete crimping of the tube 9 is carried out in two stages.
  • the first time of crimping corresponds to the pressurization of the volume V1 according to the description of FIG. 2.
  • the crimping of the tube 9 in the remaining part of the thickness of the plate is obtained by the pressurization of the volumes V1 and V2 , the fluid being introduced either by input B alone or inputs A and B simultaneously.
  • the fluid introduced by the feed inlet B travels through the channel 12 to fill the volume V2.
  • the seal 7 being under pressure, it lets the fluid pass into the volume V1.
  • the complete crimping of the tube 9 is obtained; it results in a controlled axial shortening of the tube, shown diagrammatically by reference 13 in FIG. 3.
  • the hydraulic crimping device can have more than two supply inlets and more than two volumes between the tube 9 and the probe 4, which can be supplied independently or simultaneously.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Forging (AREA)
  • Pipe Accessories (AREA)

Description

La présente invention concerne un dispositif de sertissage hydraulique d'un tube dans une plaque à tubes par exemple d'échangeur ou de générateur de vapeur destinés plus particulièrement aux chaufferies nucléaires civiles et militaires.The present invention relates to a hydraulic crimping device for a tube in a tube plate, for example of a heat exchanger or a steam generator intended more particularly for civil and military nuclear boilers.

Le sertissage d'un tube dans une plaque de forte épaisseur permet de fixer le tube dans la plaque afin d'assurer une bonne tenue mécanique du tube dans cette plaque. Il a pour conséquence d'éliminer l'interstice entre tube et plaque et donc d'assurer l'étanchéité entre le tube et la plaque.The crimping of a tube into a very thick plate makes it possible to fix the tube in the plate in order to ensure good mechanical strength of the tube in this plate. It has the consequence of eliminating the gap between the tube and the plate and therefore ensuring the seal between the tube and the plate.

On connaît des moyens mécaniques de sertissage de tubes dans une plaque permettant d'assurer par retrait radial de la plaque sur le tube, une tenue du tube dans la plaque. L'expansion du tube dans l'alésage de plaque est assurée par le mouvement de galets qui repoussent le tube contre la paroi de l'alésage de la plaque à tubes. Le déplacement axial d'une broche portant une cage annulaire renfermant les galets est obtenu mécaniquement ou hydrauliquement. Ce système possède l'inconvénient d'entraîner des rayures du tube serti.Mechanical means are known for crimping tubes into a plate making it possible, by radial withdrawal of the plate on the tube, to hold the tube in the plate. The expansion of the tube in the plate bore is ensured by the movement of rollers which push the tube against the wall of the bore of the tube plate. The axial displacement of a spindle carrying an annular cage containing the rollers is obtained mechanically or hydraulically. This system has the drawback of causing scratches in the crimped tube.

On connaît aussi d'autres moyens hydrauliques, qui assurent une expansion radiale du tube par mise en pression élevée de l'espace compris entre le tube à sertir et un outillage appelé sonde ou broche de sertissage. L'étanchéité aux deux extrémités de la sonde est assurée par des joints toriques, munis ou non de systèmes anti-extrusion. Ce système possède l'avantage de ne pas abîmer le tube mais par contre ne permet pas de maîtriser le raccourcissement axial du tube dans la zone expansée, ce qui oblige la réalisation d'une soudure par un moyen extérieur au procédé, y compris le sertissage mécanique, à l'extrémité du tube ou en tout autre endroit prédéterminé du tube, avant l'opération de sertissage proprement dite, pour obtenir une bonne tenue mécanique.Other hydraulic means are also known, which ensure a radial expansion of the tube by placing high pressure in the space between the tube to be crimped and a tool called a probe or crimping spindle. Sealing at both ends of the probe is ensured by O-rings, with or without anti-extrusion systems. This system has the advantage of not damaging the tube but on the other hand does not make it possible to control the axial shortening of the tube in the expanded zone, which requires the production of a weld by a means external to the process, including crimping mechanical, at the end of the tube or in any other predetermined place of the tube, before the actual crimping operation, to obtain good mechanical strength.

Le but de l'invention est de proposer un dispositif ou sonde de sertissage d'un tube par un moyen hydraulique qui permette de maîtriser le raccourcissement axial du tube dans la zone sertie, sans recours à un moyen extérieur.The object of the invention is to provide a device or probe for crimping a tube by hydraulic means which makes it possible to control the axial shortening of the tube in the crimped area, without recourse to external means.

L'invention a pour objet un dispositif de sertissage hydraulique d'un tube dans une plaque à tubes présentant des alésages, par exemple pour échangeur ou générateur de vapeur, caractérisé en ce qu'il présente une double alimentation en fluide de pression et deux volumes de sertissage délimités par des joints d'étanchéité, la mise en pression d'un premier volume réalisant un premier palier de sertissage, la mise en pression des deux volumes réalisant le sertissage du tube sur la partie restante de l'épaisseur de la plaque.The invention relates to a hydraulic crimping device for a tube in a tube plate having bores, for example for a heat exchanger or steam generator, characterized in that it has a double supply of pressure fluid and two volumes crimping defined by seals, pressurizing a first volume carrying out a first crimping bearing, pressurizing the two volumes carrying out crimping the tube on the remaining part of the thickness of the plate.

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description qui suit et qui est faite en référence aux dessins annexés parmi lesquels :

  • La figure 1 est une représentation d'ensemble de la sonde de sertissage au repos avant sertissage ;
  • La figure 2 représente une mise en pression d'un premier volume par l'une des entrées de la double alimentation ;
  • La figure 3 représente une mise en pression d'un deuxième volume, englobant le précédent par l'autre entrée de la double alimentation.
Other characteristics and advantages of the invention will appear on reading the description which follows and which is given with reference to the appended drawings in which:
  • Figure 1 is an overall representation of the crimping probe at rest before crimping;
  • FIG. 2 represents a pressurization of a first volume by one of the inputs of the double feed;
  • Figure 3 shows a pressurization of a second volume, including the previous one by the other inlet of the double feed.

La figure 1 montre l'ensemble de l'outil de sertissage : système extérieur d'alimentation en fluide de pression 1, adaptateur 2, butée 3, sonde 4, systèmes anti-extrusion des joints 5, joints d'étanchéité 6, 7, 8 ainsi que le tube 9 à sertir dans l'épaisseur de la plaque 10 dont les 2 côtés sont référencés F1 et F2. Les joints 6 et 7 délimitent avec le tube 9 et la sonde 4 un volume annulaire V2 tandis que les joints 7 et 8 forment avec le tube 9 et la sonde 4 un volume annulaire V1.FIG. 1 shows the assembly of the crimping tool: external pressure fluid supply system 1, adapter 2, stop 3, probe 4, anti-extrusion systems for the seals 5, seals 6, 7, 8 as well as the tube 9 to be crimped in the thickness of the plate 10, the 2 sides of which are referenced F1 and F2. The joints 6 and 7 delimit with the tube 9 and the probe 4 an annular volume V2 while the joints 7 and 8 form with the tube 9 and the probe 4 an annular volume V1.

La sonde 4 est introduite dans le tube 9 soit manuellement soit automatiquement.The probe 4 is introduced into the tube 9 either manually or automatically.

La figure 2 montre la mise en pression du volume V1 et donc la réalisation du palier de sertissage sur le côté F2 de la plaque.FIG. 2 shows the pressurization of the volume V1 and therefore the production of the crimping bearing on the side F2 of the plate.

Le fluide est introduit par l'entrée A de l'adaptateur, parcourt le canal 11, se répand dans le volume V1 et réalise un premier palier de sertissage correspondant au volume annulaire V1 délimité par les joints 7 et 8 qui assurent l'étanchéité. Ce premier palier de sertissage assure le figeage axial du tube 9 dans l'alésage de plaque.The fluid is introduced through the inlet A of the adapter, travels through the channel 11, spreads into the volume V1 and produces a first crimping bearing corresponding to the annular volume V1 delimited by the seals 7 and 8 which ensure the seal. This first crimping bearing ensures the axial freezing of the tube 9 in the plate bore.

La figure 3 montre la mise en pression des volumes V1 et V2 et donc le sertissage complet du tube 9 dans l'épaisseur de la plaque 10.FIG. 3 shows the pressurization of the volumes V1 and V2 and therefore the complete crimping of the tube 9 in the thickness of the plate 10.

Le sertissage complet du tube 9 est réalisé en deux temps.The complete crimping of the tube 9 is carried out in two stages.

Le premier temps du sertissage correspond à la mise en pression du volume V1 suivant la description de la figure 2. Le sertissage du tube 9 dans la partie restante de l'épaisseur de la plaque est obtenu par la mise en pression des volumes V1 et V2, le fluide étant introduit soit par l'entrée B seule ou les entrées A et B simultanément.The first time of crimping corresponds to the pressurization of the volume V1 according to the description of FIG. 2. The crimping of the tube 9 in the remaining part of the thickness of the plate is obtained by the pressurization of the volumes V1 and V2 , the fluid being introduced either by input B alone or inputs A and B simultaneously.

Le fluide introduit par l'entrée B d'alimentation parcourt le canal 12 pour venir remplir le volume V2. Le joint 7 étant en équipression, il laisse passer le fluide dans le volume V1.The fluid introduced by the feed inlet B travels through the channel 12 to fill the volume V2. The seal 7 being under pressure, it lets the fluid pass into the volume V1.

La mise en pression de la totalité du volume délimité par les joints 6 et 8 entre tube 9 et sonde 4 assure le sertissage du tube sur la partie restante de l'épaisseur de la plaque correspondant au volume V2.The pressurization of the entire volume delimited by the seals 6 and 8 between tube 9 and probe 4 ensures the crimping of the tube on the remaining part of the thickness of the plate corresponding to the volume V2.

A l'issue des deux opérations de sertissage, la première sur la partie du tube 9 correspondant au volume V1, la deuxième sur la partie du tube 9 correspondant au volume V2, le sertissage complet du tube 9 est obtenu; il entraîne un raccourcissement axial maîtrisé du tube, schématisé par la référence 13 sur la figure3.At the end of the two crimping operations, the first on the part of the tube 9 corresponding to the volume V1, the second on the part of the tube 9 corresponding to the volume V2, the complete crimping of the tube 9 is obtained; it results in a controlled axial shortening of the tube, shown diagrammatically by reference 13 in FIG. 3.

Le dispositif de sertissage hydraulique peut présenter plus de deux entrées d'alimentation et plus de deux volumes entre le tube 9 et la sonde 4, qui peuvent être alimentés de manière indépendante ou simultanée.The hydraulic crimping device can have more than two supply inlets and more than two volumes between the tube 9 and the probe 4, which can be supplied independently or simultaneously.

Claims (1)

  1. Hydraulic crimping device for a tube in a tube plate with bores, for example in a steam generator or exchanger, characterised by the fact that it has a dual pressure fluid supply (A and B) and two crimping volumes (V1 and V2) defined by sealing joints (respectively 6 and 7 for V2, 7 and 8 for V1), the pressurisation of the first volume V1 carrying out a first stage of crimping, and the pressurisation of the volume V1 + V2 performing the crimping of the tube on the remaining part of the thickness of the plate.
EP19930400769 1992-03-26 1993-03-24 Device to crimp a tube in a plate Expired - Lifetime EP0564327B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9203628 1992-03-26
FR9203628A FR2689044B1 (en) 1992-03-26 1992-03-26 METHOD AND DEVICE FOR CRIMPING A TUBE IN A PLATE.

Publications (2)

Publication Number Publication Date
EP0564327A1 EP0564327A1 (en) 1993-10-06
EP0564327B1 true EP0564327B1 (en) 1995-08-09

Family

ID=9428083

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930400769 Expired - Lifetime EP0564327B1 (en) 1992-03-26 1993-03-24 Device to crimp a tube in a plate

Country Status (3)

Country Link
EP (1) EP0564327B1 (en)
DE (1) DE69300347T2 (en)
FR (1) FR2689044B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10338348B3 (en) * 2003-08-21 2005-04-07 Daimlerchrysler Ag Expanding lance for partially expanding a tubular hollow profile has a first axial channel and a second axial channel with a radial bore opening on the casing of a sealing support between two sealing rings of a sealing arrangement

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3729169A1 (en) * 1987-09-01 1989-03-09 Emitec Emissionstechnologie HYDRAULIC EXPANSION PROBE WITH CENTERING DEVICE
US4827748A (en) * 1988-07-11 1989-05-09 Cameron Iron Works Usa, Inc. Cold forming tool
DE3842589A1 (en) * 1988-12-17 1990-06-21 Emitec Emissionstechnologie DETERMINATION METHOD

Also Published As

Publication number Publication date
FR2689044A1 (en) 1993-10-01
EP0564327A1 (en) 1993-10-06
DE69300347T2 (en) 1996-01-18
FR2689044B1 (en) 1996-05-24
DE69300347D1 (en) 1995-09-14

Similar Documents

Publication Publication Date Title
US4616392A (en) Bladder mandrel for hydraulic expansions of tubes and sleeves
US6662994B2 (en) Jig for welding pipe ends
EP0414589B1 (en) Double-wall system for a water containment
US3579794A (en) Means for securing couplings to pipe
EP0828962B1 (en) Tube fitting and assembly method
KR101968589B1 (en) Grooved coupler
KR20020069220A (en) Ferrule with relief to reduce galling
US3529856A (en) Coupling and method of forming same
CN108194737A (en) With release accessory part accessory is connected with the push-in type of device
FR2465149A2 (en) CONNECTION FOR FLUIDS
JPH102470A (en) Tube coupling device
WO2003027664A3 (en) Device for inspecting pipes using ultrasound
EP0333814A1 (en) Connector with interchangeable annular metal joint
EP0564327B1 (en) Device to crimp a tube in a plate
FR3030682A1 (en) PIPE ASSEMBLY WITH DRAINAGE SYSTEM
US3851899A (en) Means for sealing fittings and nozzle assemblies at extremely high fluid pressures
US20160138738A1 (en) Hose and Tubing Connector Device, Assembly and Method of Assembly
US4724595A (en) Bladder mandrel for hydraulic expansions of tubes and sleeves
FR2729204A1 (en) HIGH TEMPERATURE DOUBLE-MOLDED TUBE CONNECTION ARRANGEMENT
GB2553169A (en) Connector for fluid chromatography
CA1178184A (en) Method of pressure fitting a tube in a tube sheet
US7520538B2 (en) Orbital tube welding purge adaptor
FR2514099A1 (en) Wedging of metal sleeve inside metal tube - by radial expansion of sleeve, esp. to isolate defect in tube in steam generator of nuclear power station
JP2006257768A (en) Steel pipe expansion type lock bolt for connection
USRE28457E (en) Coupling fitting for connecting two pipes

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

17P Request for examination filed

Effective date: 19930426

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT

17Q First examination report despatched

Effective date: 19941005

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT

ITF It: translation for a ep patent filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19950807

REF Corresponds to:

Ref document number: 69300347

Country of ref document: DE

Date of ref document: 19950914

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
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: DE

Payment date: 20120315

Year of fee payment: 20

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

Ref country code: IT

Payment date: 20120326

Year of fee payment: 20

Ref country code: GB

Payment date: 20120320

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69300347

Country of ref document: DE

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20130323

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130323

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20130326