EP0564327B1 - Device to crimp a tube in a plate - Google Patents
Device to crimp a tube in a plate Download PDFInfo
- 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
Links
- 238000002788 crimping Methods 0.000 claims description 29
- 239000012530 fluid Substances 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 2
- 230000009977 dual effect Effects 0.000 claims 1
- 239000000523 sample Substances 0.000 description 10
- 238000004904 shortening Methods 0.000 description 3
- 235000021183 entrée Nutrition 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
- B21D39/08—Tube expanders
- B21D39/20—Tube expanders with mandrels, e.g. expandable
- B21D39/203—Tube 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.
- 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,
La sonde 4 est introduite dans le tube 9 soit manuellement soit automatiquement.The
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
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
Le sertissage complet du tube 9 est réalisé en deux temps.The complete crimping of the
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
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
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
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
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
Claims (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.
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)
| 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)
| 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 |
-
1992
- 1992-03-26 FR FR9203628A patent/FR2689044B1/en not_active Expired - Lifetime
-
1993
- 1993-03-24 EP EP19930400769 patent/EP0564327B1/en not_active Expired - Lifetime
- 1993-03-24 DE DE1993600347 patent/DE69300347T2/en not_active Expired - Lifetime
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 |
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