FR2540222A1 - COMPRESSION CONNECTION FOR METAL SLEEVE PIPE PIPES - Google Patents
COMPRESSION CONNECTION FOR METAL SLEEVE PIPE PIPES Download PDFInfo
- Publication number
- FR2540222A1 FR2540222A1 FR8320824A FR8320824A FR2540222A1 FR 2540222 A1 FR2540222 A1 FR 2540222A1 FR 8320824 A FR8320824 A FR 8320824A FR 8320824 A FR8320824 A FR 8320824A FR 2540222 A1 FR2540222 A1 FR 2540222A1
- Authority
- FR
- France
- Prior art keywords
- compression fitting
- tubes
- metal sleeve
- tube
- water
- 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.)
- Granted
Links
- 230000006835 compression Effects 0.000 title claims abstract description 16
- 238000007906 compression Methods 0.000 title claims abstract description 16
- IHPYMWDTONKSCO-UHFFFAOYSA-N 2,2'-piperazine-1,4-diylbisethanesulfonic acid Chemical compound OS(=O)(=O)CCN1CCN(CCS(O)(=O)=O)CC1 IHPYMWDTONKSCO-UHFFFAOYSA-N 0.000 title 1
- 239000007990 PIPES buffer Substances 0.000 title 1
- 230000007797 corrosion Effects 0.000 claims abstract description 12
- 238000005260 corrosion Methods 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000000465 moulding Methods 0.000 claims abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052802 copper Inorganic materials 0.000 claims abstract description 6
- 239000010949 copper Substances 0.000 claims abstract description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 6
- 150000001805 chlorine compounds Chemical class 0.000 claims abstract description 4
- 239000000463 material Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 3
- 239000000956 alloy Substances 0.000 claims abstract description 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 238000009434 installation Methods 0.000 claims abstract description 3
- 238000004210 cathodic protection Methods 0.000 claims abstract 3
- 238000007789 sealing Methods 0.000 abstract 1
- 239000010935 stainless steel Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
- F16L13/14—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/16—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
- F16L13/161—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars the pipe or collar being deformed by crimping or rolling
-
- 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
- B21D39/04—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes with tubes; of tubes with rods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints
- F16L13/14—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
- F16L13/141—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside
- F16L13/142—Non-disconnectable pipe joints, e.g. soldered, adhesive, or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling by crimping or rolling from the outside with a sealing element inserted into the female part before crimping or rolling
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Gasket Seals (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Abstract
L'invention concerne un raccordement de tubes pour tubes de canalisation à paroi mince en aciers hautement alliés inoxydables véhiculant de l'eau qui contient des chlorures, en particulier pour les installations d'eau et de chauffage, dans lequel les extrémités de tubes sont reliées par un raccord à compression en matériau de même nature dont les extrémités conçues sous forme de moulures annulaires entourent les extrémités de tubes avec ajustage serré par un anneau de joint qui y est disposé. Pour éviter des dommages par corrosion, on propose qu'entre la surface extérieure d'une extrémité de tube 1 et la surface intérieure du raccord à compression 2 qui l'entoure, soit disposée une douille métallique 5, en particulier en cuivre, servant à la protection cathodique contre la corrosion ainsi qu'à une étanchéité poussée. Application à la protection cathodique des raccordements de tubes. (CF DESSIN DANS BOPI)The invention relates to a pipe connection for thin-walled pipeline pipes of high-alloy stainless steels conveying water which contains chlorides, in particular for water and heating installations, in which the pipe ends are connected. by a compression fitting made of a material of the same type, the ends of which are designed in the form of annular moldings surround the ends of the tubes with a tight fit by a gasket ring arranged therein. In order to avoid corrosion damage, it is proposed that between the outer surface of one end of the tube 1 and the inner surface of the compression fitting 2 which surrounds it, there is arranged a metal sleeve 5, in particular of copper, serving to cathodic protection against corrosion as well as high sealing. Application to the cathodic protection of tube connections. (CF DRAWING IN BOPI)
Description
Raccordement à compression pour tubes de canalisation àCompression connection for pipeline pipes to
douille métallique.metal sleeve.
L'invention concerne un raccordement de tubes pour tubes de canalisation à paroi mince en aciers hautement alliés inoxydables véhiculant de l'eau qui contient des chlorures, en particulier pour les installations d'eau et de chauffage, dans lequel les extrémités de tubes sont reliées par un raccord à compression en matériau de nême nature dont les extrémités conçues sous forme de moulures annulaires entourent les extrémités de tubes avec ajustage serré par The invention relates to a pipe connection for thin-walled pipe tubes made of high-alloy stainless steels carrying water containing chlorides, in particular for water and heating installations, in which the ends of tubes are connected. by a compression fitting made of a material of the same kind whose ends designed as annular moldings surround the ends of tubes with tight fit by
un anneau de joint qui y est disposé. a ring of seal which is arranged there.
Des raccordements de tubes de ce genre sont connus, par exemple, selon le DE-OS 27 25 280 et appelés raccordements à compression L'assemblage des extrémités de tubes entre elles est assuré par une pince de serrage conçue en conséquence, avec laquelle on pousse sur les extrémités de tubes les raccords à compression, y Connections of such tubes are known, for example, according to German Offenlegungsschrift No. 27 25 280 and known as compression connections. The assembly of the ends of the tubes together is ensured by means of a clamping device designed accordingly, with which one pushes on the ends of the tubes the compression fittings,
compris les anneaux de joint.including the seal rings.
Lors du raccordement de tubes en acier inoxydable au moyen de raccords à compression en matériau de même nature et d'anneaux de joint non métalliques, par exemple en caoutchouc butyle, il peut se produire, dans des eaux contenant des chlorures, dans la région des joints, à l'intérieur des moulures annulaires, des dommages par corrosion dans les recoins et corrosion par piqûres et aussi, à des températures supérieures à environ 450 C, par corrosion fissurante sous tension Ces dommages par corrosion doivent être attribués au fait que par pénétration d'eau dans la région située entre les extrémités de tubes et les raccords à compression et par diffusion de vapeur d'eau à travers l'anneau de joint, il s'accumule dans la moulure annulaire des constituants de l'eau, parmi l'esquels, les chlorures ont une importance particulière Les ions chlorures sont des corps spécialement générateurs de dommages pour les sortes de When connecting stainless steel tubes using compression fittings of similar material and non-metallic seal rings, eg butyl rubber, it may occur in chloride-containing waters in the joints within ring moldings, corrosion damage in recesses and pitting corrosion and also, at temperatures above approximately 450 C, stress corrosion cracking This corrosion damage must be attributed to the fact that by penetration of water in the region between the ends of the tubes and the compression fittings and by diffusion of water vapor through the seal ring, it accumulates in the annular molding of the constituents of the water, among the Chlorides are of particular importance Chloride ions are especially damaging
corrosion mentionnées.mentioned corrosion.
L'invention a pour but d'empêcher les dommages par corrosion mentionnés Le problème est résolu par le fait qu'entre la surface extérieure d'une extrémité de tube et la surface intérieure du raccord à compression, qui l'entoure, est disposée une douille métallique, en particulier en cuivre, servant à la protection The object of the invention is to prevent the mentioned corrosion damage. The problem is solved by the fact that between the outer surface of a tube end and the inner surface of the compression fitting, which surrounds it, is disposed a metal bushing, in particular of copper, for protection
cathodique contre la corrosion ainsi qu'à une étanchéité poussée. cathodic against corrosion as well as a tight seal.
Un exemple d'exécution est représenté par les dessins sur lesqueis: La figure 1 est une coupe longitudinale de la partie droite du raccordement de tubes, et An exemplary embodiment is represented by the drawings on which: FIG. 1 is a longitudinal section of the straight part of the tube connection, and
La figure 2 est une coupe suivant la ligne A-A. Figure 2 is a section along the line A-A.
Sur l'extrémité du tube 1 est emmanché le raccord à compression 2 qui présente la moulure annulaire 3 et l'anneau de joint 4 inséré dans celleci Entre le raccord à compression et l'extrémité du tube se trouve la douille en cuivre 5 dont l'épaisseur de paroi est au nmaximum de 0,5 mm L'emmanchement du raccord à compression sur l'extrémité du tube s'effectue avec les mâchoires 6 d'une pince de On the end of the tube 1 is fitted the compression fitting 2 which has the annular molding 3 and the seal ring 4 inserted into it. Between the compression fitting and the end of the tube is the copper sleeve 5 wall thickness is at most 0.5 mm The fitting of the compression fitting on the end of the tube takes place with the jaws 6 of a clamp of
serrage non représentée.clamping not shown.
La douille en cuivre emmanchée sur le tube avec le raccord à compression assure: a) une protection électrochimique (cathodique) active de l'acier inoxydable contre la corrosion, car le cuivre présente, dans les eaux envisagées, un potentiel de corrosion plus négatif (moins noble) que l'acier inoxydable, b) une étanchéité poussée du raccordement Par suite, la diffusion de vapeur d'eau à travers l'anneau de joint non métallique et par conséquent aussi l'accumulation de constituants de l'eau dans The copper bushing fitted on the tube with the compression fitting ensures: a) an active electrochemical (cathodic) protection of the stainless steel against corrosion, since the copper has, in the waters envisaged, a more negative corrosion potential ( less noble) than stainless steel, b) a tight seal of the connection As a result, the diffusion of water vapor through the nonmetallic seal ring and consequently also the accumulation of constituents of water in
la région de la moulure annulaire sont diminuées. the region of the annular molding are diminished.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3303505A DE3303505C2 (en) | 1983-01-31 | 1983-01-31 | Pipe connection protected against corrosion for line pipes made of high-alloy, stainless steels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2540222A1 true FR2540222A1 (en) | 1984-08-03 |
| FR2540222B1 FR2540222B1 (en) | 1986-11-28 |
Family
ID=6189844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8320824A Expired FR2540222B1 (en) | 1983-01-31 | 1983-12-27 | COMPRESSION CONNECTION FOR METAL BUSHING PIPES |
Country Status (6)
| Country | Link |
|---|---|
| AT (1) | AT387836B (en) |
| DE (1) | DE3303505C2 (en) |
| FR (1) | FR2540222B1 (en) |
| GB (1) | GB2134614B (en) |
| IT (1) | IT1168748B (en) |
| SE (1) | SE461226B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3512331C1 (en) * | 1985-04-03 | 1986-08-21 | Mannesmann AG, 4000 Düsseldorf | Pipe connection with cathodic corrosion protection and connecting sleeve for this pipe connection |
| NL8502040A (en) * | 1985-07-16 | 1987-02-16 | Volvo Car Bv | METHOD AND TOOL FOR ESTABLISHING A GAS-TIGHT TUBE CONNECTION AND CONNECTION MADE THEREFORE |
| DE3901562C1 (en) * | 1989-01-17 | 1990-03-08 | Mannesmann Ag, 4000 Duesseldorf, De | |
| DE19609257C2 (en) * | 1996-02-28 | 1998-08-20 | Mannesmann Ag | Pipe connection |
| DE10336727B3 (en) * | 2003-08-07 | 2004-11-18 | Mapress Gmbh & Co. Kg | Pipe connection using metal pressure fitting for central heating or drinking water installation with sealing of annular gap between inside face of pipe fitting and mantle surface of pipe end |
| RU2268435C1 (en) * | 2004-08-20 | 2006-01-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Mode of making a current insulating insertion for a pipeline |
| RU2406911C1 (en) * | 2009-09-15 | 2010-12-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Procedure for fabrication of electro-insulating insertion for pipeline |
| RU2406910C1 (en) * | 2009-09-15 | 2010-12-20 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Procedure for fabrication of current insulating insertion for pipeline |
| RU2406007C1 (en) * | 2009-09-15 | 2010-12-10 | Открытое акционерное общество "Татнефть" им. В.Д. Шашина | Method for manufacturing of current-insulating insert for pipeline |
| DE102013114742A1 (en) * | 2013-12-20 | 2015-06-25 | Endress + Hauser Flowtec Ag | Method for fixing a metal tube to a metal body |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2386747A (en) * | 1944-01-27 | 1945-10-16 | Griscom Russell Co | Bimetal tube |
| DE2046962A1 (en) * | 1969-09-24 | 1971-04-22 | Dresser Ind | Die-forged pipe coupling |
| GB1244938A (en) * | 1969-03-12 | 1971-09-02 | Steel Co Of Wales Ltd | Improvements in and relating to lined pipes and vessels |
| FR2232727A1 (en) * | 1973-06-06 | 1975-01-03 | Yorkshire Imperial Metals Ltd | |
| US4026583A (en) * | 1975-04-28 | 1977-05-31 | Hydril Company | Stainless steel liner in oil well pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB291999A (en) * | 1927-09-12 | 1928-06-14 | Harry Warren Bundy | Improvements in or relating to metal tubing |
-
1983
- 1983-01-31 DE DE3303505A patent/DE3303505C2/en not_active Expired
- 1983-12-15 AT AT0435983A patent/AT387836B/en not_active IP Right Cessation
- 1983-12-27 FR FR8320824A patent/FR2540222B1/en not_active Expired
- 1983-12-30 IT IT24470/83A patent/IT1168748B/en active
-
1984
- 1984-01-30 GB GB08402374A patent/GB2134614B/en not_active Expired
- 1984-01-30 SE SE8400447A patent/SE461226B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2386747A (en) * | 1944-01-27 | 1945-10-16 | Griscom Russell Co | Bimetal tube |
| GB1244938A (en) * | 1969-03-12 | 1971-09-02 | Steel Co Of Wales Ltd | Improvements in and relating to lined pipes and vessels |
| DE2046962A1 (en) * | 1969-09-24 | 1971-04-22 | Dresser Ind | Die-forged pipe coupling |
| FR2232727A1 (en) * | 1973-06-06 | 1975-01-03 | Yorkshire Imperial Metals Ltd | |
| US4026583A (en) * | 1975-04-28 | 1977-05-31 | Hydril Company | Stainless steel liner in oil well pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| SE461226B (en) | 1990-01-22 |
| IT8324470A0 (en) | 1983-12-30 |
| AT387836B (en) | 1989-03-28 |
| SE8400447D0 (en) | 1984-01-30 |
| SE8400447L (en) | 1984-08-01 |
| FR2540222B1 (en) | 1986-11-28 |
| DE3303505A1 (en) | 1984-08-02 |
| GB2134614B (en) | 1986-04-23 |
| IT1168748B (en) | 1987-05-20 |
| GB2134614A (en) | 1984-08-15 |
| DE3303505C2 (en) | 1986-07-10 |
| ATA435983A (en) | 1988-08-15 |
| GB8402374D0 (en) | 1984-02-29 |
| IT8324470A1 (en) | 1985-06-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |