CA2007754A1 - Nondetachable press fit connector for thin-walled pipes - Google Patents
Nondetachable press fit connector for thin-walled pipesInfo
- Publication number
- CA2007754A1 CA2007754A1 CA002007754A CA2007754A CA2007754A1 CA 2007754 A1 CA2007754 A1 CA 2007754A1 CA 002007754 A CA002007754 A CA 002007754A CA 2007754 A CA2007754 A CA 2007754A CA 2007754 A1 CA2007754 A1 CA 2007754A1
- Authority
- CA
- Canada
- Prior art keywords
- press fit
- pipe
- fit connector
- bead
- connector
- 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.)
- Abandoned
Links
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 13
- 239000010936 titanium Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 8
- 230000008878 coupling Effects 0.000 claims abstract description 8
- 238000010168 coupling process Methods 0.000 claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 claims abstract description 8
- 239000011796 hollow space material Substances 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims 1
- 239000011324 bead Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009428 plumbing Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
-
- 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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Clamps And Clips (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Abstract of the Disclosure A press fit connector for nondetachably coupling thin-walled pipes formed of titanium or a titanium alloy and intended for conveying corrosive liquids is fabricated from titanium or a titanium allow. The connector includes, on its continuous wall, a bead shaped end which defines a hollow and within which a sealing ring is disposed. An end section of a pipe is slidably receivable within the connector and the bead-shaped end is then clamped between the opposed jaws of a pressing tool to deform the bead-shaped end, thereby pressing the sealing ring against the outer periphery of the pipe and securing together the connector and pipe in form-locked, force-locked and liquid tight relation.
The connector may also include a stop for limiting sliding movement of the pipe end section into the interior of the press fit connector beyond the stop.
The connector may also include a stop for limiting sliding movement of the pipe end section into the interior of the press fit connector beyond the stop.
Description
ZlolD7~5~
Field of the Invention The present invention relates to the attainment of nondetachable connections of thin-walled pipes or conduits used, by way of example, for conveying corrosive liquids and, in particular, to a press fit connector for nondetachably coupling such conduits.
7~
Backqround of the Invention ln the conveyance of corrosive liquids -- such, for example, as sea water or thermal (i.e. high or elevated temperature) water -- as in plumbing and the like, high demands are made on the corrosion resistance of the liquid-conveying or transporting conduits due, for example, to components such as chlorides in the water. In order to overcome this problem, stainless steels are frequently used in the fabrication of the conduits. Despite their high alloy contents, stainless steels do have practical limitations; thus, if the chloride content of the liquid exceeds certain values, high alloy stainless steels will also corrode and fail.
One solution to this problem in the transport of such corrosive liquids lies in the use of titanium or of a titanium alloy in fabricating the conduit, these materials being highly corrosion-resistant and having a low specific gravity. Yet titanium has heretofore been employed to only a limited extent in conduits intended to convey, for example, sea water or thermal water because the presently utilized technique for joining sections of pipe formed of or containing titanium -- i.e. inert gas welding -- represents a highly specialized and notably expensive process to employ. Titanium has therefore been used, up until now, almost exclusively and preferably in power plant technology and in the chemical industry.
77~4 Summary of the Invention It is accordingly an object of the present invention to provide an arrangement for nondetachably connecting together thin-walled pipes or conduits of titanium, or of a titanium alloy, in a simple, dependable and inexpensively-executable manner.
This and other objects of the invention are achieved by providing, for juxtaposition joinably between adjacently disposed sections of conduit, a connector useful for attaining a nondetachable press fit connection between the conduit sections, thereby obviating the need to perform inert gas welding or any other labor intensive or expensive securement techniques.
This manner of nondetachable connection, in accordance with the invention, advantageously enables the practical and economical use of titanium or of a titanium alloy in broad fields o~ lnstallation techniques having particular requirements for corrosion resistance. Moreover, these materials can readily be handled by specialized installation companies in accordance with the method and arrangement for connection herein disclosed. A
further advantage of this method and arrangement of nondetachable ~onnection resides in the fact that, since the connection of conduit sections is achieved through cold pressing of the sections -- in contradistinction to welding -- there is virtually no danger of fire, and checking of the resulting connection can be dispensed with since the use of an automatically-operating ;~0~775~
pressing tool for effecting the nondetachable securement of the press fit connPctor to the adjacently disposed conduit sections assures a tight connection and liquid tight seal in all instances.
The present invention also contemplates the accommodation of even higher forces which act in the axial direction of the liquid-conveying conduits. For this purpose, the connector and conduits are presse.d together not only in a primary fit region which contains a sealing ring but, in addition, are tightly interengaged in other areas so as to improve mechanical clamping between the press fit connector and the adjacently disposed conduit or pipe sections.
Other objects and features of the present invention will be become apparent from the following detailed description considered in conjunction with the accompany.ing drawings. It is to be understood, however, that the drawings are designed solely for purposes o~ illustration and not as a definition of the limits of the invention, for which reference should be made to the appended claims.
Brief Description of the Drawinqs In the drawings, wherein similar reference characters denote similar elements throughout the several views:
Fig. 1 is a partial longitudinal section through a nondetachable connection between a press fit connector and a conduit section in accordance with the present invention, with the pres ing tool still applied; and Fig. 2 is a cross-sectional view taken along the lines A-A in Fig. 1.
2Q~77S~
Detailed Description of the Preferred Embodiment A nondetachable connection between a section of pipe or conduit 1 and a press fit coupling member or connector 3, in accordance with the present invention, is illustrated in Fig. 1.
Each of the pipe 1 and the press fit connec:tor 3 is formed of titanium or of a titanium alloy, although t:he fabrication of the pipes and connectors from other suitable materials at the option of the user is also within the scope and contemplation of the invention. As shown in Fig. 1, the end of the pipe 1 is slidably inserted into the press fit connector 3 so that the pipe end is received in coaxially nested relation within the connector 3.
More particularly, the pipe 1 is slidably inserted into the interior of the press fit connector 3 until the pipe end abuts, and its further inward motion is halted by, the stop 2 which is defined by a radially or diametrically-reduced portion of the connector's interior periphery.
In the most preferred form of the invention wherein the conduits are intended for use in a plumbing application or the llke, the pipe 1 is seamless or welded and is formed with a relatively thin wall. The wall thickness of the pipe may, for example, be~in the range of approximately 0.5 to 3.0 mm and, correspondingIy, the pipe's outside diameter may be in the range of 10 to 100 mm. Other applications and wall thicknesses and diameters are also within the intended scope of the invantion.
The press fit connector 3 is formed of a continuous wall or sidewall which peripherally bounds an opening and thereb~
defines an elongated, substantially tubular member. The connector 3 further includes a bead-shaped end 4, within the hollow o~ which a round and deformable sealing ring 5 of, for example, butyl rubber is provided. It is generally intended, for most applications, that the press fit connector 3 will include such a bead-shaped end 4 and sealing ring 5 at each of its longitudinally opposed ends. After the end of a pipe 1 has been slidably inserted into the press fit connector 3 and advanced up to the stop ~, the opposed jaws 6, 7 of a pressing tool ~not shown) are moved into surrounding relation with the bead-shaped end 4 of the connector 3 and are then closed by hydraulically or electromagnetically-applied, for example, pressure. In this manner the press fit connector -- and, in particular, the bead-shapèd end 4 -- is appropriately deformed or otherwise clamped against the outer periphery of the pipe 1 to nondetachably connect the press fit connector 3 and pipe 1 in a form-locked and force-locked manner.
In order to further improve the mechanical clamping of the press fit connector 3 about the pipe 1, the interior diameter 8 of the pipe 1 is preferably reduced in the vicinity of the press-fit engagement. This reduction may be effected through the application of a radially inwardly directed pressure applied to the connector 3 by the jaws 6, 7 not only in the area of its bead-shaped end 4 but, in addition, at one or more locations longitudinally inward from the bead-shaped end. This arrangement r~sults in a notable increase in the effective resistance to longitudinal forces which occur and which tend to urge the pipe 1 out of its coaxially-nested engagement with the press fit connector 3.
It is also contemplated that the as-fabricated inner diameter of the press fit connector 3 may, optionally, decrease between the bead-shaped end 4 and the location of the stop 2.
Such a decrease -- which is preferably gradual or continuous --in the connector's inner diameter will be effective to further increase the force-locked retention or securement of the pipe 1 within and to the press fit connector 3.
As pressure is applied by th~ pressing tool jaws 6, 7, the diameter of the bead-shaped end 4 of the press fit connector 3 is reduced and the hollow space within the bead is also reduced. This results in enhanced sealing action between the press fit connector 3 and the pipe 1 as the enclosed, initially round or arcuate sealing ring 5 is elastically deformed about the exterior periphery of the pipe 1, thereby providing an enhanced liquid-tight seal between the connector and pipe.
In the cross-sectional view of Fig. 2, the opposed jaws 6, 7 of the pressing tool are fully advanced into clamping relation about the press fit connector and the form-locked and force-locked clamping of the connector 3 to the pipe 1 can readily be observed. In the illustrated embodiment of the invention, the shape of the jaws 6, 7 results in a substantially 7~
hexagonal cross-sectional configuration of the nondetachable connection or joinder between the press fit connector 3 and the pipe 1. The inclusion of small hollow spaces 9, 9' which are defined between the opposed jaws 6, 7 in the plane of separation between the ~aws and immediately adjacent the outer periphery of the press fit connector 3 permits an outward flow of excess material as the jaws are clamped together.
Numerous modifications to the embodiment of the invention herein described and illustrated in the drawings are within the intended scope of the invention. For example, in lieu of a separate press fit connector or coupliny member disposed between two adjacently situated pipe or conduit sections, the appropriate structural features of the press fit connector may be incorporated directly on one section of the pipe at or proximate its end, thereby enabling two sections of pipe to be nondetachably coupled one to the other without the juxtaposition of a separate connector 3. A press fit connector carrying the structural pipe-engaging or coupling features at or proximate only one of its ends -- as, for example, at the end of a liquid transport path where it may only be necessary to provide a suitable press fit connection to one section of pipe or conduit -- is also within the contemplation of the invention.
Thus, while there have been shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form ~775~
and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.
Field of the Invention The present invention relates to the attainment of nondetachable connections of thin-walled pipes or conduits used, by way of example, for conveying corrosive liquids and, in particular, to a press fit connector for nondetachably coupling such conduits.
7~
Backqround of the Invention ln the conveyance of corrosive liquids -- such, for example, as sea water or thermal (i.e. high or elevated temperature) water -- as in plumbing and the like, high demands are made on the corrosion resistance of the liquid-conveying or transporting conduits due, for example, to components such as chlorides in the water. In order to overcome this problem, stainless steels are frequently used in the fabrication of the conduits. Despite their high alloy contents, stainless steels do have practical limitations; thus, if the chloride content of the liquid exceeds certain values, high alloy stainless steels will also corrode and fail.
One solution to this problem in the transport of such corrosive liquids lies in the use of titanium or of a titanium alloy in fabricating the conduit, these materials being highly corrosion-resistant and having a low specific gravity. Yet titanium has heretofore been employed to only a limited extent in conduits intended to convey, for example, sea water or thermal water because the presently utilized technique for joining sections of pipe formed of or containing titanium -- i.e. inert gas welding -- represents a highly specialized and notably expensive process to employ. Titanium has therefore been used, up until now, almost exclusively and preferably in power plant technology and in the chemical industry.
77~4 Summary of the Invention It is accordingly an object of the present invention to provide an arrangement for nondetachably connecting together thin-walled pipes or conduits of titanium, or of a titanium alloy, in a simple, dependable and inexpensively-executable manner.
This and other objects of the invention are achieved by providing, for juxtaposition joinably between adjacently disposed sections of conduit, a connector useful for attaining a nondetachable press fit connection between the conduit sections, thereby obviating the need to perform inert gas welding or any other labor intensive or expensive securement techniques.
This manner of nondetachable connection, in accordance with the invention, advantageously enables the practical and economical use of titanium or of a titanium alloy in broad fields o~ lnstallation techniques having particular requirements for corrosion resistance. Moreover, these materials can readily be handled by specialized installation companies in accordance with the method and arrangement for connection herein disclosed. A
further advantage of this method and arrangement of nondetachable ~onnection resides in the fact that, since the connection of conduit sections is achieved through cold pressing of the sections -- in contradistinction to welding -- there is virtually no danger of fire, and checking of the resulting connection can be dispensed with since the use of an automatically-operating ;~0~775~
pressing tool for effecting the nondetachable securement of the press fit connPctor to the adjacently disposed conduit sections assures a tight connection and liquid tight seal in all instances.
The present invention also contemplates the accommodation of even higher forces which act in the axial direction of the liquid-conveying conduits. For this purpose, the connector and conduits are presse.d together not only in a primary fit region which contains a sealing ring but, in addition, are tightly interengaged in other areas so as to improve mechanical clamping between the press fit connector and the adjacently disposed conduit or pipe sections.
Other objects and features of the present invention will be become apparent from the following detailed description considered in conjunction with the accompany.ing drawings. It is to be understood, however, that the drawings are designed solely for purposes o~ illustration and not as a definition of the limits of the invention, for which reference should be made to the appended claims.
Brief Description of the Drawinqs In the drawings, wherein similar reference characters denote similar elements throughout the several views:
Fig. 1 is a partial longitudinal section through a nondetachable connection between a press fit connector and a conduit section in accordance with the present invention, with the pres ing tool still applied; and Fig. 2 is a cross-sectional view taken along the lines A-A in Fig. 1.
2Q~77S~
Detailed Description of the Preferred Embodiment A nondetachable connection between a section of pipe or conduit 1 and a press fit coupling member or connector 3, in accordance with the present invention, is illustrated in Fig. 1.
Each of the pipe 1 and the press fit connec:tor 3 is formed of titanium or of a titanium alloy, although t:he fabrication of the pipes and connectors from other suitable materials at the option of the user is also within the scope and contemplation of the invention. As shown in Fig. 1, the end of the pipe 1 is slidably inserted into the press fit connector 3 so that the pipe end is received in coaxially nested relation within the connector 3.
More particularly, the pipe 1 is slidably inserted into the interior of the press fit connector 3 until the pipe end abuts, and its further inward motion is halted by, the stop 2 which is defined by a radially or diametrically-reduced portion of the connector's interior periphery.
In the most preferred form of the invention wherein the conduits are intended for use in a plumbing application or the llke, the pipe 1 is seamless or welded and is formed with a relatively thin wall. The wall thickness of the pipe may, for example, be~in the range of approximately 0.5 to 3.0 mm and, correspondingIy, the pipe's outside diameter may be in the range of 10 to 100 mm. Other applications and wall thicknesses and diameters are also within the intended scope of the invantion.
The press fit connector 3 is formed of a continuous wall or sidewall which peripherally bounds an opening and thereb~
defines an elongated, substantially tubular member. The connector 3 further includes a bead-shaped end 4, within the hollow o~ which a round and deformable sealing ring 5 of, for example, butyl rubber is provided. It is generally intended, for most applications, that the press fit connector 3 will include such a bead-shaped end 4 and sealing ring 5 at each of its longitudinally opposed ends. After the end of a pipe 1 has been slidably inserted into the press fit connector 3 and advanced up to the stop ~, the opposed jaws 6, 7 of a pressing tool ~not shown) are moved into surrounding relation with the bead-shaped end 4 of the connector 3 and are then closed by hydraulically or electromagnetically-applied, for example, pressure. In this manner the press fit connector -- and, in particular, the bead-shapèd end 4 -- is appropriately deformed or otherwise clamped against the outer periphery of the pipe 1 to nondetachably connect the press fit connector 3 and pipe 1 in a form-locked and force-locked manner.
In order to further improve the mechanical clamping of the press fit connector 3 about the pipe 1, the interior diameter 8 of the pipe 1 is preferably reduced in the vicinity of the press-fit engagement. This reduction may be effected through the application of a radially inwardly directed pressure applied to the connector 3 by the jaws 6, 7 not only in the area of its bead-shaped end 4 but, in addition, at one or more locations longitudinally inward from the bead-shaped end. This arrangement r~sults in a notable increase in the effective resistance to longitudinal forces which occur and which tend to urge the pipe 1 out of its coaxially-nested engagement with the press fit connector 3.
It is also contemplated that the as-fabricated inner diameter of the press fit connector 3 may, optionally, decrease between the bead-shaped end 4 and the location of the stop 2.
Such a decrease -- which is preferably gradual or continuous --in the connector's inner diameter will be effective to further increase the force-locked retention or securement of the pipe 1 within and to the press fit connector 3.
As pressure is applied by th~ pressing tool jaws 6, 7, the diameter of the bead-shaped end 4 of the press fit connector 3 is reduced and the hollow space within the bead is also reduced. This results in enhanced sealing action between the press fit connector 3 and the pipe 1 as the enclosed, initially round or arcuate sealing ring 5 is elastically deformed about the exterior periphery of the pipe 1, thereby providing an enhanced liquid-tight seal between the connector and pipe.
In the cross-sectional view of Fig. 2, the opposed jaws 6, 7 of the pressing tool are fully advanced into clamping relation about the press fit connector and the form-locked and force-locked clamping of the connector 3 to the pipe 1 can readily be observed. In the illustrated embodiment of the invention, the shape of the jaws 6, 7 results in a substantially 7~
hexagonal cross-sectional configuration of the nondetachable connection or joinder between the press fit connector 3 and the pipe 1. The inclusion of small hollow spaces 9, 9' which are defined between the opposed jaws 6, 7 in the plane of separation between the ~aws and immediately adjacent the outer periphery of the press fit connector 3 permits an outward flow of excess material as the jaws are clamped together.
Numerous modifications to the embodiment of the invention herein described and illustrated in the drawings are within the intended scope of the invention. For example, in lieu of a separate press fit connector or coupliny member disposed between two adjacently situated pipe or conduit sections, the appropriate structural features of the press fit connector may be incorporated directly on one section of the pipe at or proximate its end, thereby enabling two sections of pipe to be nondetachably coupled one to the other without the juxtaposition of a separate connector 3. A press fit connector carrying the structural pipe-engaging or coupling features at or proximate only one of its ends -- as, for example, at the end of a liquid transport path where it may only be necessary to provide a suitable press fit connection to one section of pipe or conduit -- is also within the contemplation of the invention.
Thus, while there have been shown and described and pointed out fundamental novel features of the invention as applied to a preferred embodiment thereof, it will be understood that various omissions and substitutions and changes in the form ~775~
and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope of the claims appended hereto.
Claims (9)
1. A arrangement for providing a nondetachable connection to a thin-walled pipe suitable for conveying corrosive liquids, comprising:
a thin-walled pipe formed of at least one of titanium and a titanium alloy, said pipe having an end section, an outside diameter within the range of 10 to 100 mm and a wall thickness in the range of 0.5 to 3.0 mm; and a press fit connector comprising a tubular member having a bead-shaped end defining a hollow space and a sealing ring disposed in said hollow space, said press fit connector being formed of at least one of titanium and a titanium alloy and having a predetermined interior diameter proximate said bead-shaped end for slidably receiving the end section of said pipe in coaxially-nested relation within said press fit connector, said bead-shaped end being formed for deformably engaging and pressing said sealing ring against the outside periphery of said pipe end section in a form-locked and force-locked manner when the bead-shaped end is press fit to the outside periphery of the pipe.
a thin-walled pipe formed of at least one of titanium and a titanium alloy, said pipe having an end section, an outside diameter within the range of 10 to 100 mm and a wall thickness in the range of 0.5 to 3.0 mm; and a press fit connector comprising a tubular member having a bead-shaped end defining a hollow space and a sealing ring disposed in said hollow space, said press fit connector being formed of at least one of titanium and a titanium alloy and having a predetermined interior diameter proximate said bead-shaped end for slidably receiving the end section of said pipe in coaxially-nested relation within said press fit connector, said bead-shaped end being formed for deformably engaging and pressing said sealing ring against the outside periphery of said pipe end section in a form-locked and force-locked manner when the bead-shaped end is press fit to the outside periphery of the pipe.
2. An arrangement in accordance with claim 1, wherein said press fit connector has, longitudinally inwardly from said bead-shaped end, an interior diameter smaller than said predetermined interior diameter so as to provids an enhanced mechanical connection between said press fit connector and said pipe.
3. An arrangement in accordance with claim 2, wherein said smaller interior diameter comprises a stop for preventing said coaxially-nested slidable receipt of said pipe end section beyond said stop.
4. An arrangement in accordance with claim 2, wherein said smaller interior diameter comprises a portion of gradually-decreasing interior diameter.
5. An arrangement in accordance with claim 4, wherein said press fit connector further comprises, longitudinally inwardly from said smaller interior diameter portion of said press fit connector, a stop for preventing said coaxially-nested slidable receipt of said pipe end section within said press fit connector beyond said stop.
6. A coupling member for effecting a nondetachable press fit connection between a pair of conduits for conveying corrosive liquids, comprising:
a continuous wall peripherally bounding an opening and defining a press fit connector for coupled juxtaposition between two liquid conveying conduits so as to provide a longitudinally continuous liquid passageway from one of the conduits to the other of said conduits, said wall having an internal diameter selected for slidably receiving an end section of one of the conduits in coaxially-nested and tightly engaging relation within said press fit member;
a bead-shaped end on said wall proximate an end of said connector and defining a hollow space, said bead-shaped end being formed for deformable engagement with the coaxially-nested conduit end section to as to effect a form-locked and force-locked connection between the coaxially-nested conduit and said press fit connector; and a sealing ring disposed in said hollow space for pressing against the coaxially-nested end section so as to enhance a liquid-tight seal between said press fit connector wall and the coaxially-nested conduit.
a continuous wall peripherally bounding an opening and defining a press fit connector for coupled juxtaposition between two liquid conveying conduits so as to provide a longitudinally continuous liquid passageway from one of the conduits to the other of said conduits, said wall having an internal diameter selected for slidably receiving an end section of one of the conduits in coaxially-nested and tightly engaging relation within said press fit member;
a bead-shaped end on said wall proximate an end of said connector and defining a hollow space, said bead-shaped end being formed for deformable engagement with the coaxially-nested conduit end section to as to effect a form-locked and force-locked connection between the coaxially-nested conduit and said press fit connector; and a sealing ring disposed in said hollow space for pressing against the coaxially-nested end section so as to enhance a liquid-tight seal between said press fit connector wall and the coaxially-nested conduit.
7. A coupling member in accordance with claim 6, wherein the conduits and said press fit connector are formed of one of titanium and a titanium alloy.
8. A coupling member in accordance with claim 6, wherein said wall has, proximate said bead-shaped end, a predetermined interior diameter sized for slidable receipt of an end section of one of the conduits, and a stop disposed longitudinally inward from said bead-shaped end for preventing said coaxially-nested slidable receipt of the conduit end section within said press fit connector beyond said stop.
9. A coupling member in accordance with claim 6, wherein the interior diameter of said wall gradually decreases between said bead-shaped end and said stop so as to enhance the nondetachable press fit connection between said press fit connector and an end section of a conduit disposed coaxially nestedly therewithin.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3901562.9 | 1989-01-17 | ||
| DE3901562A DE3901562C1 (en) | 1989-01-17 | 1989-01-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2007754A1 true CA2007754A1 (en) | 1990-07-17 |
Family
ID=6372436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002007754A Abandoned CA2007754A1 (en) | 1989-01-17 | 1990-01-15 | Nondetachable press fit connector for thin-walled pipes |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0378882B1 (en) |
| AT (1) | ATE79454T1 (en) |
| CA (1) | CA2007754A1 (en) |
| DE (2) | DE3901562C1 (en) |
| ES (1) | ES2034603T3 (en) |
| GR (1) | GR3005426T3 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4025317A1 (en) * | 1990-08-07 | 1992-02-13 | Mannesmann Ag | USE OF A PRESS FITTING TO MAKE AN UNLOADABLE CONNECTION OF THIN-WALLED TUBES |
| DE29510265U1 (en) * | 1995-06-24 | 1996-11-21 | Seppelfricke Armaturen GmbH & Co., 45881 Gelsenkirchen | Pipe connection |
| DE19631574C1 (en) * | 1996-07-26 | 1997-11-13 | Mannesmann Ag | Pressed union between pipes |
| DE19637688C2 (en) * | 1996-09-09 | 1998-08-20 | Mannesmann Ag | Pipe connection |
| EP0893639A1 (en) * | 1997-07-23 | 1999-01-27 | Chibro S.p.A. | Means for the formation of hydraulic circuits and relating process |
| DE102004044636B3 (en) * | 2004-09-10 | 2006-04-06 | Visteon Global Technologies, Inc., Dearborn | Connection assembly and method for making connections to high pressure pipes in vehicle air conditioners |
| CN104033672A (en) * | 2013-03-08 | 2014-09-10 | 浙江艾迪西流体控制股份有限公司 | Polyethylene-aluminum composite pipeline connector |
| CN105805445A (en) * | 2016-04-11 | 2016-07-27 | 成都格瑞思文化传播有限公司 | Water pipe connector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA928360A (en) * | 1969-09-24 | 1973-06-12 | Dresser Industries | Swagable pipe coupling |
| US3730567A (en) * | 1970-07-08 | 1973-05-01 | Axial Corp | Coupling sleeve |
| DE2725280A1 (en) * | 1977-06-01 | 1978-12-14 | Mannesmann Roehren Werke Ag | Pipe connection system for thin metal pipes - uses compressible sleeve with conical section and ring collars |
| DE3303505C2 (en) * | 1983-01-31 | 1986-07-10 | Mannesmann AG, 4000 Düsseldorf | Pipe connection protected against corrosion for line pipes made of high-alloy, stainless steels |
| 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 |
-
1989
- 1989-01-17 DE DE3901562A patent/DE3901562C1/de not_active Expired - Fee Related
- 1989-12-20 ES ES198989250122T patent/ES2034603T3/en not_active Expired - Lifetime
- 1989-12-20 EP EP89250122A patent/EP0378882B1/en not_active Expired - Lifetime
- 1989-12-20 DE DE8989250122T patent/DE58902045D1/en not_active Expired - Fee Related
- 1989-12-20 AT AT89250122T patent/ATE79454T1/en not_active IP Right Cessation
-
1990
- 1990-01-15 CA CA002007754A patent/CA2007754A1/en not_active Abandoned
-
1992
- 1992-08-13 GR GR920401701T patent/GR3005426T3/el unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GR3005426T3 (en) | 1993-05-24 |
| EP0378882A1 (en) | 1990-07-25 |
| DE3901562C1 (en) | 1990-03-08 |
| ATE79454T1 (en) | 1992-08-15 |
| DE58902045D1 (en) | 1992-09-17 |
| EP0378882B1 (en) | 1992-08-12 |
| ES2034603T3 (en) | 1993-04-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |