CA2029144A1 - Concrete pipe with a lining resistant to corrosion and with fitting connecting members and furthermore with sealing means integrated in the terminal parts of the pipe - Google Patents
Concrete pipe with a lining resistant to corrosion and with fitting connecting members and furthermore with sealing means integrated in the terminal parts of the pipeInfo
- Publication number
- CA2029144A1 CA2029144A1 CA002029144A CA2029144A CA2029144A1 CA 2029144 A1 CA2029144 A1 CA 2029144A1 CA 002029144 A CA002029144 A CA 002029144A CA 2029144 A CA2029144 A CA 2029144A CA 2029144 A1 CA2029144 A1 CA 2029144A1
- Authority
- CA
- Canada
- Prior art keywords
- pipe
- concrete
- end part
- projecting
- plastic
- 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
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
- F16L9/00—Rigid pipes
- F16L9/08—Rigid pipes of concrete, cement, or asbestos cement, with or without reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B19/00—Machines or methods for applying the material to surfaces to form a permanent layer thereon
- B28B19/0038—Machines or methods for applying the material to surfaces to form a permanent layer thereon lining the outer wall of hollow objects, e.g. pipes
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- 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
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
-
- 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
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/185—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for joints with sleeve or socket
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Laminated Bodies (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Joints With Sleeves (AREA)
Abstract
Abstract of the Disclosure.
The invention relates to concrete pipes of the type having a corrosion resistant lining and to a partly flexible connecting means with fitting pipe connecting members provided in part at the pipe ends in relation to each other for the direct connection of the individual pipes with each other, and seals for sealing the joints and simultaneously allowing for thermally induced stresses.
In order to lower production and material costs the lining is in the form of a plastic pipe (1) whose one end is designed as the pipe spigot end part (3) and the other end is designed as a pipe socket end part (4) for receiving the pipe spigot part (3) of the next pipe, such pipe spigot end part being in the form of a projecting part (5) of the plastic pipe (1), whose end face (9) bears against a circumferential ledge (8), extending into the interior the pipe for a distance essentially equal to the thickness of the wall of the projecting pipe part, and between the end face of the socket end part and the ledge (8) at the inner side of the pipe there is a circumferential groove (13) in order to receive an elastomeric sealing ring (14) of a natural or a synthetic flexible material, and the projecting part as a straight pipe spigot end part inserted into the pipe socket end part is so long that it covers the circumferential groove with its sealing ring and the plastic pipe is provided with a concrete casing as far as the insertable projecting part of the plastic pipe spigot end part into the pipe socket end part.
The invention relates to concrete pipes of the type having a corrosion resistant lining and to a partly flexible connecting means with fitting pipe connecting members provided in part at the pipe ends in relation to each other for the direct connection of the individual pipes with each other, and seals for sealing the joints and simultaneously allowing for thermally induced stresses.
In order to lower production and material costs the lining is in the form of a plastic pipe (1) whose one end is designed as the pipe spigot end part (3) and the other end is designed as a pipe socket end part (4) for receiving the pipe spigot part (3) of the next pipe, such pipe spigot end part being in the form of a projecting part (5) of the plastic pipe (1), whose end face (9) bears against a circumferential ledge (8), extending into the interior the pipe for a distance essentially equal to the thickness of the wall of the projecting pipe part, and between the end face of the socket end part and the ledge (8) at the inner side of the pipe there is a circumferential groove (13) in order to receive an elastomeric sealing ring (14) of a natural or a synthetic flexible material, and the projecting part as a straight pipe spigot end part inserted into the pipe socket end part is so long that it covers the circumferential groove with its sealing ring and the plastic pipe is provided with a concrete casing as far as the insertable projecting part of the plastic pipe spigot end part into the pipe socket end part.
Description
A Concrete Pipe with a lining re~i~;tant to Corrosion and with fitting connectlng members and furtherrnore with sealing Means integrated in the terminal Parts of the Pipe.
The invention relates to a concrete pipe with a corrosion resistant lining and to a partly flexible connecting means with fitting pipe connecting members provided in part at the pipe ends in relation to each other for the direct connection of the 5 individual pipes with each other, and seals for sealing the joints and simultaneously allowing for thermally induced stresses.
Pipes made of plastic and of concrete are presently on the market. In the first case the pipes are usually made entirely made of drawn plastic while pipes made of concrete are generally 10 produced in a vertical mold with a sliding core. Drain systems are to a large extent built up using such plpes. The requirements they have to meet in order not to present an environmental hazard are becoming more and more exacting so that it is hardly possible to meet such requirements at the present time. This is more 15 particularly due to the fact that the pipes corrode owing to the action of aggressive, acidic waste water and thus develop lealcs and fail. Such corrosion however means that individual pipes constantly have to be replaced and finally all the pipes of a system have to be replaced, this being more often the case at 20 present than was the case a few years ago. In order to avoid such disadvantages there has already been a proposal to provide a concrete pipe com~ined with a plastic pipe. Since such pipes are normally laid like concrete pipes with the spigot end projecting 9 1 ~ ~
into the ~;ocket end of the next followiny pipe so as to provido a rigid joint, such spigot ends are very likely to he damaged.
Furthermore, owing to their rigid jointing means and owing to lack of sufficient means for allowing for the possibility of thermal 5 expansion of the ylastic parts in relation to the concrete part and the concrete parts in relation to the concrete parts on fitting the pipes together cracks due to stress in the concrete material and~or bursting of the inserted pi pe ends is likely so that such pipe parts are damaged for this rea50n and they have to be replaced 10 by new pipes.
One object of the present invention i5 to provide concrete pipes with a corrosion-resistant lining for drain purposes which as compared with conventional piping are able to be made with lower material and production costs and are furthermore a~le to resist 15 very aggressive, acidic sewage or waste water. A further object of the invention is to provide such a pipe with a connecting means ensuring a highly satisfactory action as regards sealing off the bore of the pipe from the surroundings. A still further aim of the invention is to provide a simple connection between a system made 20 up of the novel pipes and a pre-existing pipe system, consisting for instance of plastic or concrete, cast iron, asbestos-cement material and the like so that strong and completely sealed joints are produced.
In order to achieve these objects in the case of a concrete 25 pipe with a corrosion-resistant, liquid-tight lining the latter is in the form of a plastic pipe whose one end i9 designed as the pipe spigot end part and the other end is designed as a pipe socket end part for receiving th~ pipe spigot part of the next pipe, such pipe spigot end part being in the form of a projecting part of the 30 plastic pipe, whose end face bears ayainst a circumferential ledge, extending into the interior the pipe for a distance essentially equal to the thickness of the wall of the projecting pipe part, and betw0en the end face of the socket end part and the ledge ~t the inner side of the pipe there is a circumferential groove in order - 3 ~ 4 to rece;ve an elastomeric sealing ring o-f a natural or a synthotic fle~ible rnaterial, and the projecting part as a straiyht pipe splgot end part inserted into the pipe soclcet end part is so long that it covers the circumferential groove with its sealing ring and the plastic pipe i5 provided with a concrete casiny as far as the inxertable projecting part of the plastic pipe spigot end part into the pipe socket end part.
The method in accordance with the invention for the pr~duction of such plastic pipe with a concrete casing is characterized in that a pla~tic pipe with such a lenyth that it has a projecting part projecting past an outwardly moved axial core of a conventional pipe makiny machine and starting with the pipe socket end is pushed downwards onto the core in the pipe making machine and after this a pipe mold of steel i5 also pushed into the ] S length of the core with a spacing in accordance with desired thickness of the concrete pipe body to be molded also in a downward direction and after pushing on the pipe opening is covered and in a further sequence in the space between the pushed on plastic pipe and the inner wall surface of the steel mold lLquid concrete material is poured in a downward direction and with simultaneous shaking into the same until it reaches the level of the core so that after drying of the molding and moving out of the molding machine a concrete plastic pipe with the same in the form of spigot pipe ends a plastic pipe end part is left projecting without any concrete case around it, The invention will be described with reference to the drawing, in which a working embodiment of it is shown in more detail.
Figure 1 shows a plurality of laid pipes diagrammatically in partial section.
Figure 2 is a view of part of a piece of pipe forming part of a connection ~etween two laid pipes as seen in perspective.
Figure 3 is a view of a pipe joint between two - 4 - 2Q~9~
pipes in a smaller ~cale, ir. the case of which a con~r ete and plastic pipe is to be seen with a length of plastic pipe projecting from it.
Figure 4 is a diagrammatic representation of the method steps invalved în the production ~f a c~ncrete pipe provided with a plastic lining and having such plastic pipe projecting at one end.
Figure 1 shows a plastic pipe 1 provided with a concrete casing 2, the plastic pipe serving as a corrosion resistant, liquid-tight lining of the concrete pipe 1, one end of same being the form of a pipe spigot end part 3 and the other end ~eing in the form of a pîpe socket end part 4, and with the end parts 3 and 4 15 the concrete pipes are joined together. In this respect the pipe spigot end part 3 of the one pipe is inserted into the pipe socket end part of the other pipe. As a guiding means for aiding insertion there is a projecting part 5 of the plastic pipe 1 projecting past the concrete pipe 2 and, respectively, its concrete 20 casing 2 at the pipe spigot end part. In order secure the two pipes to be joined together the inner wall face 6 of the pipe socket end part 4 is provided with a circumferential ledge 8 projecting into the interior 7 of the pipe and the end face 9 of the projecting part 5 of the plastic pipe is able to be brought 25 into engagement with the ledge. It i5 convenient if the end face 9 and the ledge a extend in the direction of flow of the sewage water to be conveyed by the pipe in ~rder to avoid back pressure if dirt should collect adjacent to the gap. In this respect the height 10 of the ledge 3 is generally equal to the wall thickness 11 of the 30 plastic pipe 1 forming the projecting part. Furthermore in the pipe socket end part 4 of the plastic pipe there is, between the plastic pipe socket end and the ledge 8, a groove 13 opening into the interior 7 of the pipe and extending in the circumferential direction, such groove serving to receive an annular and preferably flat seal of a natural or synthetic flexible ma-terial, as for example a latex. The flat annular form i5 to be preerred to a round one since it will be seated in a fixed and stable manner in the groove 13 which is preferably of rectanyular in cross 5 section. The projecting part 5, which ;s able to be inser ted into the pipe socket end part, has to be so long in this connection that on the one hand it covers the circumf~rential groov~ its seal 14 and on the other hand the end face 9 is able to bear against the ledge 8, see figure 2. It is furthermore to be noted that the 10 concrete pipe members have a circumferentially extending, annular seal 15 of flexible material between the concrete pipe spigot end part 3 on the outside 23 and the concrete socket end part 4 on the inner side at 24. The plastic pipes may in a suitable form and size be inserted into the concrl?te pipe with a suitable inner form 15 in relation to the plastic pipe with a suitable size. It is an advantage if the composite pipe is manufactured with all its features - as described above - in a conventional pipe casting or molding machine 16, after the manufacture of the plastic pipe able to be used as the core, For this purpose the concrete pipe with 20 the socket end part directed downwards is moved onto the axially extending and vertically movable core 17 of the pipe molding machine so that the pipe takes up a concentric position on the core. In this respect the plastic pipe has to be so long that it projects past the core of the pipe making machine in its outwardly ?.5 moved terminal setting by the preset projecting part 5. A:Eter introduction of the core into the opening of the pipe 19 the latter is covered over by a lid 20 in order in the ensuing coating process of the concrete pipe with a concrete mix to ensure that none of the concrete material finds its way into the interior of the pipe.
30 Following this a pipe mold 18 of steel is introduced into the length of the core of the pipe making machine with a clearance in the desired thickness of concrete pipe body to be molded or cast and also pushed downwards and after being pushed on the pipe mouth is covered over. Then the space 20 between the pushed on plastic -- 6 - 2 02 9 1 ~ 4 pipe 2 and the inner wall face of the steel rnold 1~ concrete 22 is filled in downwards while shaking until the level of the core end 21 is reached. After drying of the molding and shiftiny it out o the moldiny machine there will ~e a concrete-plastic pipe, in the 5 case of which a plastic pipe end part without any concrete casing projects out of the end in the form of the projecting part 5 of the plastic pipe, see figure 4.
The composite pipes able to be produced in accordance with the invention only need a small amount of seals 14 and sealing 10 means 15 to provide not only a very satisfactory sealing action to prevent the leakage of liquid out of the pipe, but also, owing to the projecting pipe at every pipe end there is also an overlapping and direction connection without intermediate parts of the concrete pipe plastic composite pipes with each other. The flexible sealing 15 and gasketing means 14 and 15 used in this respect means that there i5 considerable freedom to move in the axial and lateral directions for the expansion and contraction of the pipes at their joints and also to allow for relative motion between the concrete pipe and the plastic coating so that any stresses due to the effects of heat or 20 variations in temperature, whlch might lead to cracking or even splitting of the pipes are allowed for. Furthermore the intermediate connecting members needed for joining and sealing of the connected parts where the ends of the pipes are adjacent to each other, as for instance in the case of a known composite 25 concrete plastic pipe, are now no longer required owing to the direct pipe joint with an overlap.
The invention relates to a concrete pipe with a corrosion resistant lining and to a partly flexible connecting means with fitting pipe connecting members provided in part at the pipe ends in relation to each other for the direct connection of the 5 individual pipes with each other, and seals for sealing the joints and simultaneously allowing for thermally induced stresses.
Pipes made of plastic and of concrete are presently on the market. In the first case the pipes are usually made entirely made of drawn plastic while pipes made of concrete are generally 10 produced in a vertical mold with a sliding core. Drain systems are to a large extent built up using such plpes. The requirements they have to meet in order not to present an environmental hazard are becoming more and more exacting so that it is hardly possible to meet such requirements at the present time. This is more 15 particularly due to the fact that the pipes corrode owing to the action of aggressive, acidic waste water and thus develop lealcs and fail. Such corrosion however means that individual pipes constantly have to be replaced and finally all the pipes of a system have to be replaced, this being more often the case at 20 present than was the case a few years ago. In order to avoid such disadvantages there has already been a proposal to provide a concrete pipe com~ined with a plastic pipe. Since such pipes are normally laid like concrete pipes with the spigot end projecting 9 1 ~ ~
into the ~;ocket end of the next followiny pipe so as to provido a rigid joint, such spigot ends are very likely to he damaged.
Furthermore, owing to their rigid jointing means and owing to lack of sufficient means for allowing for the possibility of thermal 5 expansion of the ylastic parts in relation to the concrete part and the concrete parts in relation to the concrete parts on fitting the pipes together cracks due to stress in the concrete material and~or bursting of the inserted pi pe ends is likely so that such pipe parts are damaged for this rea50n and they have to be replaced 10 by new pipes.
One object of the present invention i5 to provide concrete pipes with a corrosion-resistant lining for drain purposes which as compared with conventional piping are able to be made with lower material and production costs and are furthermore a~le to resist 15 very aggressive, acidic sewage or waste water. A further object of the invention is to provide such a pipe with a connecting means ensuring a highly satisfactory action as regards sealing off the bore of the pipe from the surroundings. A still further aim of the invention is to provide a simple connection between a system made 20 up of the novel pipes and a pre-existing pipe system, consisting for instance of plastic or concrete, cast iron, asbestos-cement material and the like so that strong and completely sealed joints are produced.
In order to achieve these objects in the case of a concrete 25 pipe with a corrosion-resistant, liquid-tight lining the latter is in the form of a plastic pipe whose one end i9 designed as the pipe spigot end part and the other end is designed as a pipe socket end part for receiving th~ pipe spigot part of the next pipe, such pipe spigot end part being in the form of a projecting part of the 30 plastic pipe, whose end face bears ayainst a circumferential ledge, extending into the interior the pipe for a distance essentially equal to the thickness of the wall of the projecting pipe part, and betw0en the end face of the socket end part and the ledge ~t the inner side of the pipe there is a circumferential groove in order - 3 ~ 4 to rece;ve an elastomeric sealing ring o-f a natural or a synthotic fle~ible rnaterial, and the projecting part as a straiyht pipe splgot end part inserted into the pipe soclcet end part is so long that it covers the circumferential groove with its sealing ring and the plastic pipe i5 provided with a concrete casiny as far as the inxertable projecting part of the plastic pipe spigot end part into the pipe socket end part.
The method in accordance with the invention for the pr~duction of such plastic pipe with a concrete casing is characterized in that a pla~tic pipe with such a lenyth that it has a projecting part projecting past an outwardly moved axial core of a conventional pipe makiny machine and starting with the pipe socket end is pushed downwards onto the core in the pipe making machine and after this a pipe mold of steel i5 also pushed into the ] S length of the core with a spacing in accordance with desired thickness of the concrete pipe body to be molded also in a downward direction and after pushing on the pipe opening is covered and in a further sequence in the space between the pushed on plastic pipe and the inner wall surface of the steel mold lLquid concrete material is poured in a downward direction and with simultaneous shaking into the same until it reaches the level of the core so that after drying of the molding and moving out of the molding machine a concrete plastic pipe with the same in the form of spigot pipe ends a plastic pipe end part is left projecting without any concrete case around it, The invention will be described with reference to the drawing, in which a working embodiment of it is shown in more detail.
Figure 1 shows a plurality of laid pipes diagrammatically in partial section.
Figure 2 is a view of part of a piece of pipe forming part of a connection ~etween two laid pipes as seen in perspective.
Figure 3 is a view of a pipe joint between two - 4 - 2Q~9~
pipes in a smaller ~cale, ir. the case of which a con~r ete and plastic pipe is to be seen with a length of plastic pipe projecting from it.
Figure 4 is a diagrammatic representation of the method steps invalved în the production ~f a c~ncrete pipe provided with a plastic lining and having such plastic pipe projecting at one end.
Figure 1 shows a plastic pipe 1 provided with a concrete casing 2, the plastic pipe serving as a corrosion resistant, liquid-tight lining of the concrete pipe 1, one end of same being the form of a pipe spigot end part 3 and the other end ~eing in the form of a pîpe socket end part 4, and with the end parts 3 and 4 15 the concrete pipes are joined together. In this respect the pipe spigot end part 3 of the one pipe is inserted into the pipe socket end part of the other pipe. As a guiding means for aiding insertion there is a projecting part 5 of the plastic pipe 1 projecting past the concrete pipe 2 and, respectively, its concrete 20 casing 2 at the pipe spigot end part. In order secure the two pipes to be joined together the inner wall face 6 of the pipe socket end part 4 is provided with a circumferential ledge 8 projecting into the interior 7 of the pipe and the end face 9 of the projecting part 5 of the plastic pipe is able to be brought 25 into engagement with the ledge. It i5 convenient if the end face 9 and the ledge a extend in the direction of flow of the sewage water to be conveyed by the pipe in ~rder to avoid back pressure if dirt should collect adjacent to the gap. In this respect the height 10 of the ledge 3 is generally equal to the wall thickness 11 of the 30 plastic pipe 1 forming the projecting part. Furthermore in the pipe socket end part 4 of the plastic pipe there is, between the plastic pipe socket end and the ledge 8, a groove 13 opening into the interior 7 of the pipe and extending in the circumferential direction, such groove serving to receive an annular and preferably flat seal of a natural or synthetic flexible ma-terial, as for example a latex. The flat annular form i5 to be preerred to a round one since it will be seated in a fixed and stable manner in the groove 13 which is preferably of rectanyular in cross 5 section. The projecting part 5, which ;s able to be inser ted into the pipe socket end part, has to be so long in this connection that on the one hand it covers the circumf~rential groov~ its seal 14 and on the other hand the end face 9 is able to bear against the ledge 8, see figure 2. It is furthermore to be noted that the 10 concrete pipe members have a circumferentially extending, annular seal 15 of flexible material between the concrete pipe spigot end part 3 on the outside 23 and the concrete socket end part 4 on the inner side at 24. The plastic pipes may in a suitable form and size be inserted into the concrl?te pipe with a suitable inner form 15 in relation to the plastic pipe with a suitable size. It is an advantage if the composite pipe is manufactured with all its features - as described above - in a conventional pipe casting or molding machine 16, after the manufacture of the plastic pipe able to be used as the core, For this purpose the concrete pipe with 20 the socket end part directed downwards is moved onto the axially extending and vertically movable core 17 of the pipe molding machine so that the pipe takes up a concentric position on the core. In this respect the plastic pipe has to be so long that it projects past the core of the pipe making machine in its outwardly ?.5 moved terminal setting by the preset projecting part 5. A:Eter introduction of the core into the opening of the pipe 19 the latter is covered over by a lid 20 in order in the ensuing coating process of the concrete pipe with a concrete mix to ensure that none of the concrete material finds its way into the interior of the pipe.
30 Following this a pipe mold 18 of steel is introduced into the length of the core of the pipe making machine with a clearance in the desired thickness of concrete pipe body to be molded or cast and also pushed downwards and after being pushed on the pipe mouth is covered over. Then the space 20 between the pushed on plastic -- 6 - 2 02 9 1 ~ 4 pipe 2 and the inner wall face of the steel rnold 1~ concrete 22 is filled in downwards while shaking until the level of the core end 21 is reached. After drying of the molding and shiftiny it out o the moldiny machine there will ~e a concrete-plastic pipe, in the 5 case of which a plastic pipe end part without any concrete casing projects out of the end in the form of the projecting part 5 of the plastic pipe, see figure 4.
The composite pipes able to be produced in accordance with the invention only need a small amount of seals 14 and sealing 10 means 15 to provide not only a very satisfactory sealing action to prevent the leakage of liquid out of the pipe, but also, owing to the projecting pipe at every pipe end there is also an overlapping and direction connection without intermediate parts of the concrete pipe plastic composite pipes with each other. The flexible sealing 15 and gasketing means 14 and 15 used in this respect means that there i5 considerable freedom to move in the axial and lateral directions for the expansion and contraction of the pipes at their joints and also to allow for relative motion between the concrete pipe and the plastic coating so that any stresses due to the effects of heat or 20 variations in temperature, whlch might lead to cracking or even splitting of the pipes are allowed for. Furthermore the intermediate connecting members needed for joining and sealing of the connected parts where the ends of the pipes are adjacent to each other, as for instance in the case of a known composite 25 concrete plastic pipe, are now no longer required owing to the direct pipe joint with an overlap.
Claims (3)
1 A concrete pipe with a corrosion resistant lining and to a partly flexible connecting means with fitting pipe connecting members provided in part at the pipe ends in relation to each other for the direct connection of the individual pipes with each other, and seals for sealing the joints and simultaneously allowing for thermally induced stresses, characterized in that the lining is in the form of a plastic pipe whose one end is designed as the pipe spigot end part and the other end is designed as a pipe socket end part for receiving the pipe spigot part of the next pipe, such pipe spigot end part being in the form of a projecting part of the plastic pipe, whose end face bears against a circumferential ledge, extending into the interior the pipe for a distance essentially equal to the thickness of the wall of the projecting pipe part, and between the end face of the socket end part and the ledge at the inner side of the pipe there is a circumferential groove in order to receive an elastomeric sealing ring of a natural or a synthetic flexible material, and the projecting part as a straight pipe spigot end part inserted into the pipe socket end part is so long that it covers the circumferential groove with its sealing ring and the plastic pipe is provided with a concrete casing as far as the insertable projecting part of the plastic pipe spigot end part into the pipe socket end part.
2 A concrete pipe with a corrosion resistant lining, characterized in that between the concrete pipe spigot end on the outer side and the concrete pipe socket end part on the inner side the concrete bodies have a circumferentially extending sealing ring of a flexible material.
3 A method of producing a plastic pipe with a corrosion resistant lining as claimed in claim 1 and claim 2, characterized in that a plastic pipe with such a length that it has a projecting part projecting past an outwardly moved axial core of a conventional pipe making machine and starting with the pipe socket end is pushed downwards onto the core in the pipe making machine and after this a pipe mold of steel is also pushed into the length of the core with a spacing in accordance with desired thickness of the concrete pipe body to be molded also in a downward direction and after pushing on the pipe opening is covered and in a further sequence in the space between the pushed on plastic pipe and the inner wall surface of the steel mold liquid concrete material is poured in a downward direction and with simultaneous shaking into the same until it reaches the level of the core so that after drying of the molding and moving out of the molding machine a concrete plastic pipe with the same in the form of spigot pipe ends a plastic pipe end part is left projecting without any concrete case around it.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8913022U DE8913022U1 (en) | 1989-11-03 | 1989-11-03 | CONCRETE PIPE WITH A CORROSION-RESISTANT INTERNAL LINING WITH FIT-FITTED PIPE JOINTS AND SEALING ARRANGEMENTS INTEGRATED WITH THE PIPE AREAS |
| DE3936671 | 1989-11-03 | ||
| DEP3936671.5 | 1989-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2029144A1 true CA2029144A1 (en) | 1991-05-04 |
Family
ID=25886730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002029144A Abandoned CA2029144A1 (en) | 1989-11-03 | 1990-11-01 | Concrete pipe with a lining resistant to corrosion and with fitting connecting members and furthermore with sealing means integrated in the terminal parts of the pipe |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0426147B1 (en) |
| AT (1) | ATE133485T1 (en) |
| AU (1) | AU652541B2 (en) |
| CA (1) | CA2029144A1 (en) |
| DE (3) | DE8913022U1 (en) |
| DK (1) | DK0426147T3 (en) |
| ES (1) | ES2081896T3 (en) |
| GR (1) | GR3018822T3 (en) |
| HR (1) | HRP940594A2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9551449B2 (en) | 2010-05-26 | 2017-01-24 | Lmk Technologies, Llc | Method for creating a seal between pipe liners |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8913022U1 (en) * | 1989-11-03 | 1990-02-22 | Fasel, Geb. Willwacher, Ulrike, 5439 Nisterau, De | CONCRETE PIPE WITH A CORROSION-RESISTANT INTERNAL LINING WITH FIT-FITTED PIPE JOINTS AND SEALING ARRANGEMENTS INTEGRATED WITH THE PIPE AREAS |
| DE4025603A1 (en) * | 1990-08-13 | 1992-02-20 | Pt Poly Tec Gmbh | CONCRETE PIPE |
| DE4127992A1 (en) * | 1991-08-23 | 1993-02-25 | Huels Troisdorf | CONCRETE PLASTIC COMPOSITE PIPE, METHOD FOR THE PRODUCTION THEREOF AND ITS USE AS A DRIVE TUBE |
| AT398819B (en) * | 1991-12-10 | 1995-02-27 | Harreither Raimund | ARRANGEMENT FOR HEATING AND SANITARY INSTALLATION WITH AT LEAST ONE PIPE ELEMENT AND AT LEAST ONE FITTING |
| DE9405242U1 (en) * | 1994-03-28 | 1994-05-26 | Schmalz & Weisgerber Gmbh | Bell socket pipe made of concrete for sewer construction |
| DE29700398U1 (en) * | 1997-01-11 | 1997-03-13 | Rehau Ag & Co | Concrete pipe with plastic inner lining |
| DE19801019B4 (en) * | 1998-01-14 | 2006-11-30 | Funke Kunststoffe Gmbh | Sealing plug connection |
| DE10109415A1 (en) * | 2001-02-27 | 2002-09-12 | Funke Kunststoffe Gmbh | Pipe joint comprises a socket lining element provided with inner and outer collars, and a groove for a ring sealing element which is compressed when the pipes are assembled |
| DE202004003139U1 (en) | 2004-03-01 | 2005-07-28 | Gebr. Fasel Betonwerk Gmbh | Concrete pipe with corrosion-resistant inner lining |
| DE202008006134U1 (en) | 2008-05-05 | 2009-09-17 | Gebr. Fasel Betonwerk Gmbh | Duct system with testing device |
| CN101586722B (en) * | 2008-05-25 | 2010-08-18 | 刘文多 | Cement pipe connecting member |
| DE202010015759U1 (en) | 2010-11-23 | 2012-03-01 | Gebr. Fasel Betonwerk Gmbh | Concrete pipe with corrosion-resistant inner lining |
| CN104455827B (en) * | 2014-10-29 | 2016-08-17 | 中国水利水电第十工程局有限公司 | Pressure backfill formula pipe connections |
| CN113389943B (en) * | 2021-04-23 | 2022-07-15 | 浙江五联建设有限公司 | Municipal drainage pipeline construction technology |
| CN115126940B (en) * | 2022-06-27 | 2024-04-05 | 安徽华奇管业有限公司 | Assembled PP inner wall reinforced concrete composite pipe and production process thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU465991B2 (en) * | 1970-12-30 | 1973-05-24 | Improvements in concrete pipes andthe uke | |
| DE8132729U1 (en) * | 1981-11-09 | 1982-07-15 | Pebüso-Betonwerke Heribert Büscher GmbH & Co, 4400 Münster | "CONCRETE SOCKET PIPE OR THE LIKE." |
| DE8505653U1 (en) * | 1985-02-27 | 1985-07-04 | Fa. Leonhard Gollwitzer, 8481 Mantel | Concrete pipe for use in or for the transport of aggressive fluids |
| DE8714664U1 (en) * | 1987-10-30 | 1988-01-14 | Eternit Ag, 1000 Berlin, De | |
| DE8806158U1 (en) * | 1988-05-09 | 1989-02-02 | Fasel, Georg, Dipl.-Ing., 5439 Nisterau, De | |
| DE8913022U1 (en) * | 1989-11-03 | 1990-02-22 | Fasel, Geb. Willwacher, Ulrike, 5439 Nisterau, De | CONCRETE PIPE WITH A CORROSION-RESISTANT INTERNAL LINING WITH FIT-FITTED PIPE JOINTS AND SEALING ARRANGEMENTS INTEGRATED WITH THE PIPE AREAS |
-
1989
- 1989-11-03 DE DE8913022U patent/DE8913022U1/en not_active Expired - Lifetime
-
1990
- 1990-10-24 AU AU64963/90A patent/AU652541B2/en not_active Ceased
- 1990-10-31 DE DE59010086T patent/DE59010086D1/en not_active Expired - Lifetime
- 1990-10-31 DK DK90120891.8T patent/DK0426147T3/en active
- 1990-10-31 EP EP90120891A patent/EP0426147B1/en not_active Expired - Lifetime
- 1990-10-31 AT AT90120891T patent/ATE133485T1/en not_active IP Right Cessation
- 1990-10-31 ES ES90120891T patent/ES2081896T3/en not_active Expired - Lifetime
- 1990-11-01 CA CA002029144A patent/CA2029144A1/en not_active Abandoned
- 1990-11-02 DE DE4034953A patent/DE4034953C2/en not_active Expired - Lifetime
-
1994
- 1994-09-26 HR HR940594A patent/HRP940594A2/en not_active Application Discontinuation
-
1996
- 1996-01-31 GR GR950403450T patent/GR3018822T3/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9551449B2 (en) | 2010-05-26 | 2017-01-24 | Lmk Technologies, Llc | Method for creating a seal between pipe liners |
Also Published As
| Publication number | Publication date |
|---|---|
| AU6496390A (en) | 1991-05-09 |
| HRP940594A2 (en) | 1996-04-30 |
| AU652541B2 (en) | 1994-09-01 |
| DE8913022U1 (en) | 1990-02-22 |
| ATE133485T1 (en) | 1996-02-15 |
| GR3018822T3 (en) | 1996-04-30 |
| EP0426147B1 (en) | 1996-01-24 |
| DE59010086D1 (en) | 1996-03-07 |
| DE4034953C2 (en) | 1996-01-25 |
| DE4034953A1 (en) | 1991-05-08 |
| ES2081896T3 (en) | 1996-03-16 |
| EP0426147A3 (en) | 1992-11-19 |
| EP0426147A2 (en) | 1991-05-08 |
| DK0426147T3 (en) | 1996-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |